JPH0639375U - Wrench storage mechanism for power hand tools - Google Patents

Abstract

(57) [Summary] [Purpose] To provide a wrench storage mechanism that allows a wrench to be stored in a power hand tool without traveling and is easy to take out. [Structure] A straight-sheath fastener magazine including a magazine body and a slider movable in the front-rear axis direction of the magazine body, and a wrench holding mechanism for holding an L-shaped wrench including a long arm portion and a short arm portion are provided. In power tools,
A chamber forming member that penetrates the rear wall of the slider and that extends inside the slider along the front-rear axis of the slider to form a long arm portion storage chamber, and a circle formed on the rear surface of the rear wall of the slider and having a radius of the short arm portion. It is composed of a short arm rotation insertion / removal portion having one end inside thereof, and a wrench holder arranged on the rear surface of the rear wall of the slider to fix the short arm portion in a rotatable manner.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a wrench storing mechanism which is provided in a part of a power hand tool and stores a wrench for disassembling and assembling the power hand tool.

[0002]

[Prior art and its problems]

 As an example in which a conventional power hand tool (for example, a pneumatic nailing machine) holds an L-shaped hexagonal wrench, a tool holding structure for a fastener driving machine disclosed in Japanese Utility Model Laid-Open No. 3-62774 is known. This tool holding structure is made of a rubber elastic member to hold the outer shape of the hexagonal wrench by applying compressive force, and extends from the rear end of the magazine unit to the rear end of the grip of the fastener driving machine. It is attached to the hanger. Since the tool holding structure is formed so that the L-shaped long arm of the hexagon wrench is pushed into the hole formed in the rubber elastic member, the friction force of the rubber elastic member acts on the hexagon wrench. However, the operator has a drawback that it is difficult to put the hexagon wrench in and out. Also, the hexagon wrench protrudes outside the fastener driving machine and impairs the operability of the fastener driving machine.

[0003]

[Problems to be solved by the device]

 An object of the present invention is to provide a wrench storage mechanism for a power hand tool that allows the wrench to be stored in the power hand tool without traveling and is easy to take out.

[0004]

[Means for Solving the Problems]

 The present invention is a straight-sheath fastener magazine, comprising a straight-sheath fastener magazine including a magazine body and a slider movable in the front-rear axial direction of the magazine body, a first arm portion and a second arm portion. And a wrench holding mechanism for holding an L-shaped wrench, the first arm including a hole formed through a rear wall block of the slider and rotatably supported along the front-rear axis of the slider. The first arm housing portion and the second arm portion including the arc-shaped flat surface formed on the rear surface of the slider rear wall block and having the hole as a center and the length of the second arm portion as a radius. A second arm supporting surface rotatably arranged along the surface and one end of the supporting surface, and engages with the second arm section to fix the movement of the second arm section in the slider longitudinal direction. With the support of the second arm Characterized in that it consists of a wrench holder to lock the rotational movement along the surface.

[0005]

[Operation and effect of the device]

 When the second arm part is swung from the wrench fixed position around the hole in the rear wall block of the slider of the first arm housing part, at the other end of the second arm supporting surface, the second arm of the rent has its end part Comes to a position where the operator can easily grasp. Further, since the first arm portion of the wrench is housed in the slider and does not travel to the outside of the power tool, the operability of the power hand tool is improved as compared with the conventional fastener driving tool with a tool holding structure.

[0006]

【Example】

 Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings. As shown in FIG. 3, a pneumatic nailer equipped with a wrench storage mechanism according to an embodiment of the present invention mainly includes a nailer housing 1 having a substantially L-shape as a whole and a nailer housing. 1. A percussion cylinder / piston mechanism 3 arranged coaxially with and fixed to the main housing part 2 inside the main housing part 2 formed as a front part of the main housing part 1, and a percussion cylinder / piston mechanism 3 fixed to the lower end of the main housing part 2. A nose unit 4 which extends coaxially with and ejects a nail, a driver 6 which extends as a piston rod of a percussion piston 5 and reciprocates in the nose unit 4, and a percussion cylinder / piston mechanism 3 which is disposed at an upper end portion of a percussion cylinder. A head valve 7 that controls the inflow of compressed air into the piston mechanism 3 and the exhaust from the striking cylinder / piston mechanism 3, and the head by closing the upper end of the main housing portion 2 A housing cap 8 forming a part of the valve 7; a trigger valve 10 provided below the boundary between the grip portion 9 of the nailer housing 1 and the main housing portion 2 to control opening / closing of the head valve 7; A trigger 11 pivotally supported on the outer wall surface of the main housing portion 2 for the operator to manually operate the trigger valve 10, and a contact plate mechanically related to the trigger 11 and inside the nose unit 4 has a contact plate in the axial direction of the nose unit 4. The contact arm unit 12 which reciprocates in the direction of the nose unit 4 and a large number of nails fixed to the rear side wall surface of the nose unit 4 and extending rearward and substantially parallel to the grip portion 9 (especially, the diameter of the head is larger than that of the shank portion) And a slightly larger finishing nail) and a magazine unit 13 for loading sheet-like connecting nails which are joined in parallel without any gap. Hereinafter, each part will be described in detail.

Nailer Housing: The nailer housing 1 comprises a main housing part 2 and a grip part 9. The inside of the grip portion 9 is integrated with a part of the inside of the main housing portion 2 and the inside of the housing cap 8 to form a compressed air storage chamber 14 surrounding the upper portion of the striking cylinder / piston mechanism 3. A vertical partition wall 15 extending in the longitudinal direction of the main housing portion 2 is provided at the boundary between the main housing portion 2 and the grip portion 9 in the lower portion inside the main housing portion 2. An oval shoulder 16 is formed in the axially intermediate portion of the inner wall surface of the main housing portion 2 including the vertical partition wall 15. The cylinder ring 17 is laterally fixed while being placed on the shoulder portion 16, and laterally positions the striking cylinder 18.

On the cylinder ring 17, a rubber-made oval horizontal partition wall / check valve unit 19 is mounted. The horizontal partition / check valve unit 19 is fixed in the longitudinal direction of the main housing portion 2 by a spacer 20 and a cylinder ring 17 which are fitted onto the striking cylinder 18. The horizontal partition / check valve unit 19 includes a relatively thick horizontal partition 19a and a check valve 19b that is thinner than the horizontal partition 19a and is provided on the inner circumference of the horizontal partition 19a. Become. The horizontal partition wall 19a closes and seals between the compressed air storage chamber 14 and the blowback compressed air storage chamber 21 formed inside the vertical partition 15 around the lower portion of the striking cylinder 18.

A grip cap 22 is fixed to the rear end of the grip portion 9 with a bolt (not shown). The grip cap 22 is provided with an air plug 23 for connecting via a hose (not shown) to an air compressor (not shown) existing outside the nailing machine. An annular shoulder portion 24, which is partially open toward the rear of the grip portion 9, is provided on the lower end side near the rear end of the inner wall surface of the grip portion 9. An annular shoulder portion 27 formed on the front end surface of the valve casing 26 of the relief valve 25 inserted from the rear of the grip portion 9 is in contact with the shoulder portion 24. The valve casing 26 is a stepped open-ended cylinder. The rear end surface of the valve casing 26 projects slightly rearward of the rear end surface 9a of the grip portion 9 and abuts on an annular shoulder portion 28 formed near the lower end of the inner wall surface of the grip cap 22. An outer flange 29 is formed near the rear end of the valve casing 26, and an O for sealing the compressed air storage chamber 14 is provided between the shoulder portion 28 on the grip cap 22 side and the rear end surface of the outer flange 29. The ring 30 is fitted. In the grip cap 22, a through hole 31 with a seat 34 is formed on the inner peripheral side of the shoulder portion 28. A stem-shaped relief valve element 32 is arranged in the valve casing 26. One end of the relief valve body 32 abuts on the seat 34 of the grip cap 22 and is constantly urged to close the inner end opening of the valve casing 26 by a compression coil spring 33 that sets a relief pressure.

Striking Cylinder / Piston Mechanism: The striking cylinder / piston mechanism 3 comprises a striking cylinder 18 having an oval cross section, and a striking piston 5 having a cross section substantially the same as the cross section of the striking cylinder 18. On the circumferential wall of the striking cylinder 18, a large number of air holes 35 having check valves 19b mounted on the outer wall surface are arranged in the circumferential direction of the striking cylinder 18 at approximately the middle portion in the longitudinal direction of the striking cylinder 18. There is. The inside of the striking cylinder 18 communicates with the blowback compressed air storage chamber 21 through an air hole 35. A large number of rectangular cutouts 36 are arranged at the lower end of the peripheral wall of the striking cylinder 18 in the circumferential direction of the striking cylinder 18. Due to these notches 36, the interior of the impact cylinder 18 communicates with the blowback compressed air storage chamber 21. This communication is ensured even when the striking piston 5 is stationary at the lower end. The lower end of the striking cylinder 18 is in contact with the upper surface of the oblong bumper 37 arranged on the inner bottom portion of the main cylinder portion 2. The upper end of the striking cylinder 18 abuts the lower end of an elliptical head valve cylinder 40 extending downward from the ceiling wall of the housing cap 8 via the spacers 38 and 39, whereby the striking cylinder 18 is moved to the main housing. It is fixed in the longitudinal direction of the part 2. The spacer 39 is arranged between the lower end of the head valve cylinder 40 and the spacer 38, and has notches (not shown) distributed in the circumferential direction. Due to this notch, when the head valve piston 44 of the head valve 7 rises, the compressed air storage chamber 14 and the striking piston upper chamber formed above the striking piston 5 inside the striking cylinder 18 communicate with each other. The striking cylinder 18 is an aluminum alloy cylindrical body having an oval cross section, and can be formed by extrusion molding according to the conventional technique except for cutting the air holes 35 and the notches 36.

The striking piston 5 has a piston ring fitting groove 43 for fitting the piston ring 41 and the back-up ring 42 on the outer peripheral wall thereof. The piston ring 41 is an oblong annular body with a rectangular cross section, is made of a synthetic resin having lubricity (for example, polyimide), and has a slit (Fig. (Not shown). The backup ring 42 is a conventional O-ring.

Driver: The driver 6 extends as a piston rod of the striking piston 5 and is blade-shaped.

Nose unit: The nose unit 4 has an acute isosceles isosceles triangle shape as a whole, which is narrowed toward the tip (lower end) when viewed from the front, and is located at the lower end of the main housing portion 2 of the nailing machine housing 1. It is fixed. To be precise, a wear plate 59, which is a rear member of the nose unit 4, is fixed to the lower end of the main housing portion 2, and a nose front cover 60 is detachably fixed to the wear plate 59 by bolts 61. The wear plate 59 is integrally assembled with the magazine body 63 of the magazine unit 13 by bolts 62. On the central axis of the wear plate 59, a driver guide path 64 through which the blade-shaped driver 6 reciprocates is formed. In the vicinity of the upper end portion of the wear plate 59, which is continuous with the driver guide path 64, a rectangular opening 65 extending along the driver guide path 64 and penetrating the wear plate 59 back and forth is provided.

On the other hand, between the nose front cover 60 and the wear plate 59, the rectangular plate-shaped contact plate 66 of the contact arm unit 12 forms a part of the driver guide path 64 and acts as a nail guide. A connecting piece 67, which is arranged so as to be slidable with the inner surface of the front cover 60 and projects rearward at the upper end of the contact plate 66, projects rearward from the opening 65 of the wear plate 59.

Head Valve: The head valve 7 is a three-way valve that is controlled to open and close by a differential pressure of air pressure, and has a head valve cylinder 40 and a vertical T-shaped vertical section inside the head valve cylinder 40. The head valve piston 44 is fixed between the hollow head valve piston 44, the inner wall surface of the recess 46 formed in the center of the peripheral ceiling wall 45 of the housing cap 8 and the central ceiling wall 47 of the housing cap 8. It includes a Linda cap 48 and a compression coil spring 49 arranged between the head valve cylinder cap 48 and the head valve piston 44. A control chamber 50 formed by the head valve cylinder 40, the head valve cylinder cap 48, and the head valve piston 44 communicates with an annular air passage 52 of the trigger valve 10 via an air passage 51 shown by a broken line. . At the upper end of the head valve cylinder cap 48, a plurality of exhaust holes 53 are distributed and arranged in the circumferential direction of the head valve cylinder cap 48. An exhaust hole 55 is also formed in the vertical wall 54 between the central ceiling wall 47 and the peripheral ceiling wall 45 of the housing cap 8. An annular exhaust cover 56 is attached to the outer periphery of the vertical wall 54. The exhaust cover 56 has a rectangular exhaust hole 57 at one location and can rotate 360 °. As a result, when the head valve piston 44 is at the lower limit position and the space between the striking piston upper chamber and the compressed air storage chamber 14 is closed, the hollow inside of the head valve piston 44 becomes the exhaust holes 53 and 55. It communicates with the atmosphere through the exhaust hole 57 of the exhaust cover 56. When the head valve piston 44 rises to the upper limit position, the upper end of the head valve piston 44 abuts on the bumper 58 fixed to the central ceiling wall 47 of the housing cap 8 so that the striking piston upper chamber and the compressed air storage chamber 14 are separated from each other. The air passages formed by the exhaust holes 53, 55 and 57 are closed. The ascent and descent of the head valve piston 44 are determined by whether the compressed air in the compressed air storage chamber 14 or the atmospheric pressure is introduced into the control chamber 50.

Trigger Valve: The trigger valve 10 is of a type conventionally used, and has a trigger valve cylinder 68 screwed and fixed to the grip portion 9, and an upward conical portion and a downward conical portion at the upper end. It consists of a poppet 69. The upper end of the poppet 69 is disengaged from the hole 70 at the upper end of the trigger valve cylinder 68, and the lower end of the poppet 69 projects in and out from the lower end surface of the trigger valve cylinder 68. When the poppet 69 is pushed up by the trigger 11, the upward conical portion of the poppet 69 comes into contact with the peripheral edge of the hole 70 to close the hole 70, and the downward conical portion of the poppet 69 separates from the O-ring 71, so that the control chamber 50 is closed to the compressed air storage chamber 14 and is open to the atmosphere at the same time. On the other hand, when the trigger 11 is released, the opposite positional relationship occurs.

Trigger and Trigger Lock Mechanism: The trigger 11 is pivotally supported on the grip portion 9 by the pin 72 in the vicinity of the outer wall surface of the main housing portion 2 as described above. On the side of the finger-holding portion 73 of the trigger 11, the lock body 75 of the trigger lock mechanism 74, which faces the finger-holding portion 73, is provided on the lower surface side of the grip portion 9 in the recess 76 of the boss portion 96 formed on the outer wall surface thereof. It has been inserted.

The trigger 11 has a U-shaped cross section, has a downward spring receiving surface 78 at its pivot end, and is provided near the pivot end to operate the trigger valve 10 on the right and left rising walls 79. A bearing hole for supporting a pin 81 pivotally supporting the top 80 is provided, and a spring receiver 83 protruding in the lateral direction is provided on one rising wall 79 on the side closer to the finger-holding portion 73 than the bearing hole. . A spring receiving boss 84 protruding upward is provided at the front end of the finger hook 73 between the ascending walls 79 of the trigger 11. A step 85 is formed in a substantially middle portion of the rising wall 79 so that the finger hanging portion 73 side is lowered.

A top 80 is pivotally supported by the pin 81. A torsion coil spring 86 is attached to the top 80, one end of which is engaged with the top 80 and the other end is bent into a U shape, and an operating end member 87 of the contact arm unit 4 and a spring receiver 83 are provided. Is engaged with. When the tip of the contact plate 66 is brought into contact with the nail driving material and the tip of the contact plate 66 is retracted to the tip of the wear plate 59 of the nose unit 4, the operating end member 87 of the contact arm unit 4 is replaced with the torsion coil spring 86. The end is pushed up and brought into contact with the spring receiver 78. As a result, the spring force of the torsion coil spring 86 is strengthened, and the top 80 is urged clockwise in FIG. 3 to a position where it can be engaged with the lower end of the poppet 69 of the trigger valve 10. On the contrary, if the operator pulls the trigger 11 before pressing the tip of the contact plate 66 against the nail driving material, the top 80 rotates counterclockwise together with the trigger 11 and engages with the lower end of the poppet 69. It will rotate to a position that does not exist. Therefore, even if the tip of the contact plate 66 is pressed against the nail driving material, the comma 80 does not push up the poppet 69.

The trigger lock mechanism 74 includes a trigger lock body 75, a compression coil spring 88 disposed between the trigger lock body 75 and the spring receiving boss 84 of the trigger 11, and a boss portion 96 of the grip portion 9. And the formed concave portion 76. The trigger lock main body 75 includes a handle portion having a fan-shaped peripheral surface, a single-bottomed cylindrical portion 90 protruding upward from the handle portion, and an outer peripheral surface of the single-bottomed cylindrical portion 90 on the upper surface of the handle portion 89. And a positioning key portion (not shown) projecting laterally from. The handle portion has a finger hook portion (not shown) provided with serrations at one end in the circumferential direction, a short cylindrical spring bearing 93 that is coaxial with the cylindrical portion 90 with one bottom and projects downward, and a spring bearing 93. It has a locking block 94 that projects laterally therefrom and is in the first position in the rotational direction, and two grooves (not shown) that extend in parallel on both sides of the spring receiver 93. One of the grooves is an unlocking groove located at the first position in the rotating direction, and the other groove is a lightening groove. Further, the outer edge shape of the handle portion is substantially the same as the circular rear end portion shape of the boss portion 96 extending from the main housing portion 2 to the rear of the grip portion 9 on the lower surface side of the boundary portion between the main housing portion 2 and the grip portion 9. The outer edge of the handle portion is only slightly protruding from the circular rear end portion of the boss portion 96 when the trigger lock main body 75 is inserted into the recess 76 and has the same curvature. Therefore, when the operator puts his / her index finger on the finger rest, there is no discomfort that the handle portion projects from the boss portion 96 of the grip portion 9. The positioning key part has slopes on the left and right from the upper end to the lower end, and has a triangular flat part in the middle.

On the other hand, the recess 76 has a cylindrical recess into which the bottomed cylindrical portion 90 of the trigger lock body 75 is inserted, and a key hole (not shown) into which the key portion of the trigger lock body 75 is inserted. It is provided. At the center of the bottom of the key hole, there is provided a ridge (not shown) having a triangular cross-section extending radially outward from the cylindrical recess, and grooves (not shown) on both sides of the ridge. ) Has been formed. By the rotation of the trigger lock main body 75, the flat portion of the key portion is inserted and positioned in any of these grooves. As a result, either one of the unlock groove of the handle portion and the lock block 94 faces the trigger 11, and it is determined whether the trigger 11 is unlocked or locked. As shown in FIG. 3, the compression coil spring 88 is conventionally used as the return spring of the trigger 11, and the trigger lock main body 75 is the spring bearing of the compression coil spring 88 on the nailing machine housing 1 side. Has become. Thus, the trigger lock mechanism 74 is substantially the only component of the trigger lock body 75, and the other components can be said to be adapted from the existing ones.

Contact arm unit: As described in the nose unit, the contact arm unit 12 includes the rectangular plate-shaped contact plate 66 of the contact arm unit 12 between the nose front cover 60 and the wear plate 59. A driver guide path 64 is formed so as to act as a nail guide and is slidable with the inner surface of the nose front cover 60. A connecting piece 67 protruding rearward at the upper end of the contact plate 66 is a wear plate. It projects rearward from the opening 65 of 59. The rear end portion of the connecting piece 67 of the contact plate 66 is only fitted into the rectangular groove 105 formed in the joint portion 104 of the contact arm unit 12 and extending in the longitudinal direction of the grip portion 9. The joining portion 104 is joined to the L-shaped operating end member 87 via the adjusting dial 106 so as to reciprocate integrally in the vertical direction. Since the contact plate 66 is arranged inside the nose unit 4 and the connecting piece 67 also projects rearward from the opening 65 of the wear plate 59 in this way, there is no protrusion around the nose unit 4. The cornering performance of the nail driver is improved. Further, since the connecting piece 67 connects the contact plate 66 and the operating end member 87 only by inserting the connecting piece 67 into the rectangular groove 105 of the connecting portion 104, when the nail is clogged in the driver guide path 64 of the nose unit 4, Also, the nose unit 4 and the contact arm unit 12 can be easily disassembled and the nails can be easily removed. Subsequent assembly of the nose unit 4 and the contact arm unit 12 is easy.

Magazine Unit 13: The magazine unit 13 is fixed to the wear plate 59 and has a C-shaped cross-section of the magazine body 63, and a groove extending in the front-rear direction of the upper wall 63a and the lower wall 63b of the magazine body 63. A slider 110 is attached to the magazine main body 63 so as to be reciprocally movable forward and backward, and opens a side surface of the magazine main body 63 when the magazine main body 63 is moved rearward. As described above, the magazine unit 13 is of a lateral loading type in which the nails are loaded into the magazine body 63 from the side. On the inner wall surface of the magazine body 63, a plurality of nail head guide grooves each having a rectangular cross section for guiding the movement of the nail heads according to the lengths of a plurality of kinds (7 kinds in FIG. 3) to be used. 111 is extended in the front-back direction. In the lower part of the inner wall surface of the magazine body 63, a pusher guide inner groove 112 having a rectangular cross section is provided extending in the front-rear direction. The pusher 113 is attached to the inner wall surface of the magazine body 63 so as to be reciprocally movable in the front-rear direction. At the rear end of the magazine body 63, there is provided a rear wall portion 115 which is integrally formed with a hanger 116 connected to the rear end of the grip portion 9 and projects toward the slider 110. A short cylindrical spring receiver 114 is provided at the rear end of the pusher 113. A compression coil spring 117 is arranged between the rear wall portion 115 of the magazine body 63 and the spring receiver 114 of the pusher 113, and always urges the pusher 113 toward the nose unit 4. A pusher stopper 118 is provided integrally with the rear wall portion 115 of the magazine body 63 so as to come into contact with the rear surface of the body 113a of the pusher 113. A pusher lock lever 119 is pivotally supported by a member integrated with the pusher stopper 118 on the side closer to the inner wall surface of the magazine body 63 than the pusher stopper 118, and is biased counterclockwise in FIG. 3 by a torsion coil spring 120. . At the front end of the pusher lock lever 119, a claw 122 that engages with a hook portion 121 having a triangular cross section provided on the upper surface of the pusher 113 is provided slightly forward of the spring receiver 114 of the pusher 113. The claw 122 is a rectangular plate extending in the horizontal axis direction of the pusher lock lever 119. On the other hand, the hook portion 121 has a slope 121a that gradually increases from the rear portion of the pusher 113 toward the front portion. At the upper end of the pusher lock lever 119 in the front-rear direction, a rectangular claw 123 that projects upward and releases the pusher lock projects in the lateral axis direction of the pusher lock lever 119. The claw 123 is formed as an inclined plate that gradually lowers from the rear portion to the front with respect to the vertical axis of the pusher lock lever 119. The lower surface of the claw 123 is fixed to the slider 110 side and is disengaged from the upper surface of the unlocking claw 125 protruding toward the magazine body 63. In the vicinity of the front end of the pusher 113, a rectangular hooking piece 126 protruding toward the inner wall surface of the slider 110 is provided. The locking piece 126 engages with the rear surface side of the front wall portion 127 of the slider 110 on the front surface side thereof.

When the operator loads the connecting nail into the magazine unit 13, when the slider 110 is unlatched and pulled rearward with respect to the magazine body 63, the front wall portion of the slider 110 is locked by the pusher 113. While being compressed by the piece 126 and compressing the compression coil spring 117, it is moved backward together with the slider 110. When the slider 110 is pulled until it comes close to the rear end position with respect to the magazine body 63, the inclined surface 121a of the hook portion 121 of the pusher 113 comes into contact with the lower surface of the claw 122 of the pusher lock lever 119, and the slider 110 of the slider 110 moves. With the backward movement, the claw 122 is pushed up, and the pusher lock lever 119 is rotated clockwise in FIG. When the slider 110 is pulled to the rearmost position with respect to the magazine body 63, the pusher 113 abuts on the pusher stopper 118 and the claw 122 engages with the front surface of the hook portion 121 of the pusher 113. On the other hand, if the slider 110 is pushed forward with respect to the magazine body 63 after the operator has loaded the connecting nails from the side surface of the magazine body 63, the pusher 113 remains locked behind the magazine body 63. The slider 110 does not receive the force of the compression coil spring 117 and moves forward only by the force of the operator's hand. When the front wall of the slider 110 approaches the wear plate 59, the lock release claw 125 engages with the claw 123 of the pusher lock lever 119 to rotate the pusher lock lever 119 clockwise in FIG. The engagement between 121 and the claw 122 is released, and the pusher 113 is unlocked. As a result, the pusher 113 is pushed by the compression coil spring 117 and comes into contact with the tailmost nail of the connecting nails loaded in the magazine body 63.

In the slider 110, a plurality of (six in FIG. 3) grooves 127 corresponding to each nail head guide groove 111 are extended in the front-rear direction of the slider 110. One nail head pressing bar 128 for pressing the nail head is arranged to extend in the front-rear direction of the slider 110 so as to face each groove 127. A hexagonal rear wall block 129 is attached to the rear end of the slider 110 with a bolt 150.

Wrench Storage Mechanism: The wrench storage mechanism 140 is provided at the rear end of the slider 110 and has an L-shaped 6 shape including a long arm portion (first arm portion) 141 and a short arm portion (second arm portion) 142. The square wrench 143 is stored. A long arm accommodating chamber 145 is formed by penetrating the rear wall block 129 of the slider 110 substantially in the center thereof in the thickness direction of the rear wall block 129 and extending the side wall 144 of the slider 110 in the front-rear axial direction of the slider 110. On the other hand, within the rear surface of the rear wall block 129 of the slider 110, one chord exists on the vertical axis of the slider 110 and the other chord extends along the side edge 129a of the rear wall block 129 and has a substantially fan-shaped short arm supporting surface. 146 is formed. Since the side edge 129a is within a circle having a radius of the short arm portion 142 of the wrench 143, the short arm 142 of the wrench 143 moves from the vertical axis direction of the slider 110 cross section to the left and right axial direction of the slider 110 cross section. When rotated to, the end 142a projects from the side edge 129a. Therefore, the operator can easily grasp the short arm portion 142 of the wrench 143. Further, since the short arm support surface 146 is provided with an inclination (for example, about 8 °) gradually increasing from the vertical axis direction of the slider 110 cross section to the horizontal direction of the slider 110 cross section, the short length of the wrench 143 is reduced. When the arm 142 is rotated counterclockwise in FIG. 1, the entire wrench 143 moves rearward on the front-rear axis of the slider 110, increasing the ease of taking out the wrench 143. A rubber elastic wrench holder 147 is fixed to the rear surface of the rear wall block 129 approximately at the center thereof by a projection 147a. The wrench holder 147 has a C-shaped cross section with an open end 148 that opens towards the short arm support surface 146. The open end 148 is preferably tapered so as to expand from the inside of the short arm portion holding groove 149 to the outside. This makes it easy to put the short arm 142 of the wrench 143 in and out.

The wrench storage mechanism may be provided on the magazine body side.

[Brief description of drawings]

FIG. 1 is a front view of a wrench storage mechanism according to an embodiment of the present invention.

FIG. 2 is a vertical sectional view of the wrench storage mechanism of FIG.

FIG. 3 is a partially cutaway vertical sectional view of a pneumatic nailer equipped with the wrench storage mechanism of FIG.

[Explanation of symbols]

 13 magazine unit 63 magazine body 110 slider 129 rear wall block 129a side edge 141 long arm portion (first arm portion) 142 short arm portion (second arm portion) 143 wrench 144 side wall (long arm accommodation portion) 145 long arm accommodation chamber 146 Short arm support surface 147 Wrench holder

Claims (1)

[Scope of utility model registration request] 1. A straight-sheath fastener magazine, comprising a straight-sheath fastener magazine including a magazine body and a slider movable in the front-rear axial direction of the magazine body, and a first arm portion and a second arm portion. In a power tool having a wrench holding mechanism for holding an L-shaped wrench, the first arm portion includes a hole formed through a rear wall block of the slider and rotatably supports the first arm portion along the front-rear axis of the slider. The first arm accommodating portion and the rear surface of the rear wall block of the slider include an arc-shaped flat surface centered on the hole and having a radius of the length of the second arm portion. A rotatably arranged second arm support surface and one end of the support surface, which is engaged with the second arm portion to fix the movement of the second arm portion in the slider front-back axial direction,
A wrench storage mechanism in a power hand tool, which comprises a wrench holder that locks a movement in a rotational direction along a support surface of a second arm.