JP2557756Y2 - Wrench storage mechanism for power hand tools - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wrench storing mechanism provided in a part of a power hand tool for housing a wrench for disassembling and assembling the power hand tool.

[0002]

2. Description of the Related Art As an example in which an L-shaped hexagon wrench is held by a conventional power hand tool (for example, a pneumatic nailing machine), a tool for a fastener driving machine disclosed in Japanese Utility Model Laid-Open No. 3-62774 is disclosed. Retaining structures are known. This tool holding structure is made of a rubber elastic member in order to apply a compressive force to the outer shape of the hexagon wrench and holds it, and extends from the rear end of the magazine unit to the rear end of the grip portion of the fastener driving machine. It is attached to the hanger. Since the tool holding structure is formed so that the longer arm of the L-shape of the hexagonal wrench is pushed into the hole formed in the rubber elastic member, the frictional force of the rubber elastic member acts on the hexagon wrench to operate the tool. Has the disadvantage that it is difficult for the person to insert and remove the hex wrench. Further, the hexagon wrench protrudes outside the fastener driving machine and impairs the operability of the fastener driving machine.

[0003]

SUMMARY OF THE INVENTION It is an object of the present invention to provide a wrench storing mechanism for a power hand tool which can easily store and remove a wrench without traveling to the power hand tool.

[0004]

SUMMARY OF THE INVENTION The present invention is directed to a straight-shell fastener magazine, which comprises a magazine body and a slider movable in the longitudinal direction of the magazine body, and a first arm portion. A power tool having a wrench holding mechanism for holding an L-shaped wrench, comprising a hole formed through the rear wall block of the slider, and the first arm extending along the longitudinal axis of the slider. A first arm accommodating portion which is disposed and rotatably supported, and an arc-shaped flat surface formed on the rear surface of the rear wall block of the slider and having a radius of the second arm portion centered on the hole. A second arm support surface on which the two-arm portion is rotatably arranged along this surface; and a second arm support surface formed at one end of the support surface.
A wrench holder that engages with the arm to fix the movement of the second arm in the axial direction of the slider and locks the movement of the second arm in the rotational direction along the support surface. .

[0005]

When the second arm is turned from the wrench fixed position about the hole in the rear wall block of the slider of the first arm receiving portion, the second end of the wrench is placed at the other end of the second arm support surface. The end of the arm comes to a position where the operator can easily grasp it. Further, since the first arm portion of the wrench is housed in the slider and does not travel outside the power tool, the operability of the power hand tool is improved as compared with the conventional fastener driving machine with a tool holding structure.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described below in detail with reference to the drawings. As shown in FIG. 3, a pneumatic nailer having a wrench storage mechanism according to an embodiment of the present invention mainly includes a nail driver housing 1 having a substantially L-shaped overall shape and a nail driver housing. A striking cylinder / piston mechanism 3 coaxial with and fixed to the main housing part 2 formed in the main housing part 2 formed as a front part of the main body 1 and a striking cylinder / piston mechanism 3 fixed to the lower end of the main housing part 2
Nose unit 4 that extends coaxially and ejects a nail, and nose unit 4 that extends as a piston rod of striking piston 5
A driver 6 reciprocating in the inside, a head valve 7 disposed at the upper end of the striking cylinder / piston mechanism 3 for controlling the flow of compressed air into the striking cylinder / piston mechanism 3 and the exhaust from the striking cylinder / piston mechanism 3. A housing cap 8 closing the upper end of the main housing portion 2 and constituting a part of the head valve 7, and a head valve 7 provided below the boundary between the grip portion 9 of the nail driving machine housing 1 and the main housing portion 2. A trigger valve 10 for controlling opening and closing;
A trigger 11 pivotally supported by the outer wall surface of the main housing portion 2 for an operator to manually operate the trigger valve 10; A reciprocating contact arm unit 12 and a number of nails (particularly, the diameter of the head is slightly smaller than the diameter of the shank portion) fixed to the rear side wall surface of the nose unit 4 and And a magazine unit 13 for loading sheet-like connecting nails which are arranged side by side without gaps. Hereinafter, each part will be described in detail.

Nailer housing: Nailer housing 1
Consists of a main housing part 2 and a grip part 9. The inside of the grip part 9 is integrated with a part of the inside of the main housing part 2 and the inside of the housing cap 8 to form a compressed air storage chamber 14 surrounding the upper part of the striking cylinder / piston mechanism 3. A vertical partition 15 extending in the longitudinal axis direction of the main housing part 2 is provided at a boundary between the main housing part 2 and the grip part 9 at a lower portion inside the main housing part 2. An oblong shoulder 16 is formed at an axially middle portion of the inner wall surface of the main housing portion 2 including the vertical partition wall 15. The cylinder ring 17 is fixed laterally with the cylinder ring 17 mounted on the shoulder 16, and the impact cylinder 18 is positioned in the lateral direction.

On the cylinder ring 17, an oblong horizontal partition wall / check valve unit 19 made of rubber is mounted. The horizontal bulkhead / 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 externally inserted into the impact cylinder 18. The horizontal bulkhead / check valve unit 19 is a relatively thick horizontal bulkhead 1.
9a and the horizontal partition 1 are thinner than the horizontal partition 19a.
9a, and a check valve portion 19b provided on the inner periphery of 9a. The horizontal partition wall 19a closes and seals the space between the compressed air storage chamber 14 and the compressed air storage chamber 21 for blowback formed around the lower part of the impact cylinder 18 and inside the vertical partition wall 15.

A grip cap 22 is fixed to the rear end of the grip portion 9 by bolts (not shown).
The grip cap 22 is provided with an air plug 23 for connection via a hose (not shown) to an air compressor (not shown) existing outside the nailing machine. At the lower end near the rear end of the inner wall surface of the grip portion 9, a grip portion 9 is provided.
A rearwardly open annular shoulder 24 is provided. An annular shoulder 27 formed on the front end surface of the valve casing 26 of the relief valve 25 inserted from behind the grip 9 is in contact with the shoulder 24. The valve casing 26 is a stepped open-end cylinder. The rear end surface of the valve casing 26 is larger than the rear end surface 9a of the grip portion 9.
It protrudes slightly rearward, and is in contact with an annular shoulder 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-ring for sealing the compressed air storage chamber 14 is provided between the shoulder 28 on the grip cap 22 side and the rear end surface of the outer flange 29. 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 28. In the valve casing 26, a stem-shaped relief valve body 32 is arranged. One end of the relief valve body 32 abuts against the seat 34 of the grip cap 22 and is constantly urged by a compression coil spring 33 that sets the relief pressure so as to close the inner end opening of the valve casing 26.

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. A plurality of air holes 35 each having a check valve 19b mounted on the outer wall surface are distributed in the circumferential direction of the striking cylinder 18 at a substantially middle portion of the striking cylinder 18 in the longitudinal direction of the striking cylinder 18. . The inside of the impact cylinder 18 communicates with the blowback compressed air storage chamber 21 through the air hole 35. At the lower end of the peripheral wall of the striking cylinder 18, a number of rectangular cutouts 36 are dispersedly arranged in the circumferential direction of the striking cylinder 18. The inside of the impact cylinder 18 communicates with the blow-back compressed air storage chamber 21 by these notches 36. This communication is ensured even when the striking piston 5 is stationary at the lower end. The lower end of the impact cylinder 18 is connected to an oval-shaped bumper 37 disposed on the inner bottom of the main cylinder 2.
Is in contact with the upper surface. The upper end of the impact cylinder 18 abuts on the lower end of an oblong head valve cylinder 40 extending downward from the ceiling wall of the housing cap 8 via spacers 38 and 39, whereby the impact cylinder 18 is connected to the main housing. The portion 2 is fixed in the vertical axis direction. The spacer 39 includes a head valve cylinder 40
It has cutouts (not shown) that are arranged between the lower end of the spacer and the spacer 38 and are 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 communicates with the upper striking piston chamber formed above the striking piston 5 inside the striking cylinder 18. The striking cylinder 18 is a cylindrical body made of an aluminum alloy having an oval cross section, and can be formed by extrusion molding according to a conventional technique except for cutting of the air hole 35 and the notch 36.

The impact piston 5 has a piston ring fitting groove 43 for fitting a piston ring 41 and a backup ring 42 on an outer peripheral wall thereof. The piston ring 41 is an oblong body having a rectangular cross section, is made of a synthetic resin having lubricity (for example, polyimide), and has a slit (not shown) in an annular portion forming one end side in the long axis direction. ). The backup ring 42
It is a conventional O-ring.

Driver: The driver 6 extends as a piston rod of the striking piston 5 and has a blade shape.

Nose unit: The nose unit 4
The shape as viewed from the front is an acute isosceles triangular shape as a whole, which becomes narrower toward the tip (lower end).
Is fixed to the lower end of the main housing part 2 of the main body. To be more precise, a wear plate 59 serving as a rear member of the nose unit 4 is fixed to the lower end of the main housing portion 2, and the 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 main body 63 of the magazine unit 13 by bolts 62. A driver guide path 64 on which the blade-shaped driver 6 reciprocates is formed on the center axis of the wear plate 59. A rectangular opening 65 that extends along the driver guide path 64 and penetrates the wear plate 59 back and forth is provided near the upper end of the wear plate 59 so as to be continuous with the driver guide path 64.

On the other hand, a rectangular contact plate 66 of the contact arm unit 12 forms a part of the driver guide path 64 between the nose front cover 60 and the wear plate 59, and acts as a nail guide to act as a nail guide. Cover 6
The connection piece 67 is disposed so as to be slidable with the inner surface of the contact plate 66 and protrudes rearward at the upper end of the contact plate 66.
Project 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. The head valve cylinder 40 and the head valve cylinder 40 have an inverted T-shaped vertical cross section. The hollow head valve piston 44 and the ceiling wall 4 around the housing cap 8
5, a head valve cylinder cap 48 fixedly disposed between an inner wall surface of a recess 46 formed substantially at the center of the housing 5 and a center ceiling wall 47 of the housing cap 8, a head valve cylinder cap 48 and a head valve piston 44.
And a compression coil spring 49 disposed therebetween. 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 dispersedly 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 center 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,
It can rotate 0 °. Thus, when the head valve piston 44 is at the lower limit position and closes the space between the upper striking piston chamber and the compressed air storage chamber 14, the hollow inside of the head valve piston 44 has the exhaust holes 53 and 55 and the exhaust cover It communicates with the atmosphere through the 56 exhaust holes 57.
When the head valve piston 44 rises to the upper limit position, the upper end of the head valve piston 44 comes into contact with a bumper 58 fixed to the central ceiling wall 47 of the housing cap 8, and the impact piston upper chamber and the compressed air storage chamber 14 And the air passage formed by the exhaust holes 53, 55 and 57 is closed. The rise and fall of the head valve piston 44 is determined by whether the compressed air in the compressed air storage chamber 14 or the atmosphere is introduced into the control chamber 50.

Trigger Valve: The trigger valve 10 is of a conventionally used type, 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. And a poppet 69. The upper end of the poppet 69 is the trigger valve cylinder 6
The lower end of the poppet 69 protrudes and retracts with respect to 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 periphery of the hole 70 and
And the downward conical portion of the poppet 69 is separated from the O-ring 71, and the control chamber 50 is connected to the compressed air storage chamber 14.
And 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 by the grip 9 in the vicinity of the outer wall surface of the main housing 2 by the pin 72 as described above. On the side of the finger hook 73 of the trigger 11, the lock body 75 of the trigger lock mechanism 74 faces the finger hook 73, and fits into the concave portion 76 of the boss 96 formed on the outer wall surface of the lower surface of the grip 9. Has been inserted.

The trigger 11 has a U-shaped cross section, has a downwardly facing spring receiving surface 78 at a pivot end, and has a right and left rising wall 79 near the pivot end for operating the trigger valve 10. A bearing hole for supporting a pin 81 pivotally supporting the pin 80 is provided, and a spring receiver 83 is provided on one of the rising walls 79 on the side closer to the finger hook 73 than the bearing hole. Between both rising walls 79 of the trigger 11,
A spring receiving boss 84 protruding upward is provided at the front end of the finger hook 73. At a substantially intermediate portion of the rising wall 79, a step 8 formed so that the side of the finger hook 73 is lowered.
5 are formed.

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 in a U-shape, and the working end member 87 of the contact arm unit 4 is provided.
And the spring receiver 83. Contact plate 66
When the tip of the contact plate 66 abuts against the nail driving material and the tip of the contact plate 66 retracts to the tip of the wear plate 59 of the nose unit 4, the operating end member 8 of the contact arm unit 4
7 pushes up the other end of the torsion coil spring 86, and
8 Thereby, 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 engage with the lower end of the poppet 69 of the trigger valve 10. Conversely, when the operator touches the contact plate 66
If the trigger 11 is pulled before the tip of the trigger is pressed against the nail driving member, the top 80 rotates counterclockwise together with the trigger 11 and rotates to a position where it cannot engage with the lower end of the poppet 69. For this reason, even if the tip of the contact plate 66 is pressed against the nailing material,
Never push up.

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

On the other hand, the trigger lock body 7 is
5 is provided with a cylindrical concave portion into which the single-sided cylindrical portion 90 is inserted, and a key hole portion (not shown) into which the key portion of the trigger lock body 75 is inserted. At the center of the bottom of the key hole, a ridge (not shown) having a triangular cross section is provided at the center thereof and extends radially outward from the cylindrical recess. ) Is formed. By the rotation of the trigger lock body 75, the flat portion of the key portion is inserted and positioned in any of these grooves. As a result, one of the unlocking groove of the handle portion and the locking block 94 faces the trigger 11, and it is determined whether the trigger 11 is unlocked or locked. FIG.
As shown in the figure, the compression coil spring 88 is conventionally used as a return spring of the trigger 11, and the trigger lock body 75 is a spring receiver of the compression coil spring 88 on the nail driving machine housing 1 side. . As described above, the components of the trigger lock mechanism 74 are substantially only the trigger lock main body 75, and the other components can be said to be those adapted from those conventionally existing.

Contact Arm Unit: As described in the section of the nose unit, the contact arm unit 12 has a rectangular plate-like contact plate 66 of the contact arm unit 12 between the nose front cover 60 and the wear plate 59. Form a part of the guideway 64,
The contact plate 66 serves as a nail guide and is slidable on the inner surface of the nose front cover 60.
A connecting piece 67 protruding rearward at the upper end of the protruding portion protrudes rearward from the opening 65 of the wear plate 59. The rear end of the connecting piece 67 of the contact plate 66 is simply inserted into a rectangular groove 105 formed in the joint 104 of the contact arm unit 12 and extending in the longitudinal direction of the grip 9. The joint 104 is coupled to the L-shaped operating end member 87 via the adjustment dial 106 so as to reciprocate integrally in the up-down direction. As described above, since the contact plate 66 is disposed inside the nose unit 4 and the connecting piece 67 also projects rearward from the opening 65 of the wear plate 59,
There are no business trips around the nose unit 4, and the cornering performance of the nailing machine is improved. Further, since the connecting piece 67 connects the contact plate 66 and the operating end member 87 only by being inserted into the rectangular groove 105 of the joining portion 104, even if a nail is jammed in the driver guide path 64 of the nose unit 4,
Nose unit 4 and contact arm unit 12
Is easily disassembled and nails are easily removed. Subsequent assembling of the nose unit 4 and the contact arm unit 12 is also easy.

Magazine unit: Magazine unit 1
Reference numeral 3 denotes a magazine body 63 fixed to the wear plate 59 and having a C-shaped cross section, and a front-rear direction with respect to the magazine body 63 along a groove extending in the front-rear direction of the upper wall 63a and the lower wall 63b of the magazine body 63. And a slider 110 that reciprocates in the direction and that opens the side surface of the magazine body 63 when moved rearward. As described above, the magazine unit 13 is of a lateral insertion type in which nails are loaded into the magazine main body 63 from the side. On the inner wall surface of the magazine body 63, a plurality of nail head guide grooves having a rectangular cross section for guiding the movement of the nail heads according to the lengths of the nails (in FIG. 3, seven types) to be used. Reference numeral 111 extends in the front-rear direction. A pusher guide groove 112 having a rectangular cross section extends in the front-rear direction below the inner wall surface of the magazine body 63. The pusher 113 is attached to the inside wall surface of the magazine body 63 so as to be able to reciprocate in the front-rear direction. Magazine body 63
At the rear end, a hanger 1 connected to the rear end of the grip 9
Rear wall 11 protruding toward slider 110 integrally with
5 are provided. At the rear end of the pusher 113, a short cylindrical spring receiver 114 is provided. Magazine body 6
3, a compression coil spring 117 is disposed between the rear wall 115 and the spring receiver 114 of the pusher 113.
Is constantly biased toward the nose unit 4. The main body 11 of the pusher 113 is integrated with the rear wall 115 of the magazine main body 63.
A pusher stopper 118 is provided to abut the rear surface of 3a. Magazine body 6 from pusher stopper 118
On the side close to the inner wall surface of 3, the pusher lock lever 119 is pivotally supported by a member integral with the pusher stopper 118, and is urged by the torsion coil spring 120 in the counterclockwise direction in FIG. At the front end of the pusher lock lever 119, a claw 122 is provided slightly forward of the spring receiver 114 of the pusher 113 to engage with a hook portion 121 having a triangular cross section provided on the upper surface 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 is formed on the slope 12 gradually rising from the rear portion to the front portion of the pusher 113.
1a. At the upper end of the pusher lock lever 119 in the front-rear direction, a rectangular claw 123 projecting upward to release the pusher lock is provided.
9 protrudes in the horizontal axis direction. The claw 123 is formed as an inclined plate that gradually decreases from the rear to the front with respect to the longitudinal axis of the pusher lock lever 119. The lower surface of the claw 123 is fixed to the slider 110 side, and is engaged with and disengaged from the upper surface of an unlocking claw 125 protruding toward the magazine body 63. In the vicinity of the front end of the pusher 113, a rectangular engaging piece 126 protruding toward the inner wall surface of the slider 110 is provided. The engaging piece 126 engages with the rear surface of the front wall 127 of the slider 110 on the front side.

When the operator loads the connecting nail into the magazine unit 13 and the slider 110 is released from the latch and pulled rearward with respect to the magazine body 63, the front wall of the slider 110 engages with the engaging piece 126 of the pusher 113. And the compression coil spring 117 is compressed and moved backward together with the slider 110. Slider 11
When the slider 0 is pulled toward the rear end position with respect to the magazine body 63, the slope 121a of the hook portion 121 of the pusher 113 contacts the lower surface of the claw 122 of the pusher lock lever 119, and the slider 110 moves backward. With
The pawl 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 comes into contact with 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, after the operator loads the connecting nail from the side of the magazine body 63, the slider 110 is moved to the magazine body 6
When the pusher 113 is pushed forward with respect to 3, the pusher 113 remains locked behind the magazine body 63, so that the slider 110 does not receive the force of the compression coil spring 117 and moves forward only with the force of the operator's hand. . When the front wall of the slider 110 approaches the wear plate 59, the lock release claw 12
5 engages with the pawl 123 of the pusher lock lever 119 to rotate the pusher lock lever 119 clockwise in FIG. I do. As a result, the pusher 113 is pushed by the compression coil spring 117 and abuts on the last nail of the connecting nail loaded in the magazine body 63.

The slider 110 is provided with a guide groove 1 for each nail head.
A plurality (six in FIG. 3) of grooves 127 extend in the front-rear direction of the slider 110 in correspondence with the groove 11. Each groove 12
Opposite to 7, each nail head holding bar 128 for holding the nail head is arranged extending in the front-rear direction of the slider 110. A hexagonal rear wall block 129 is attached to the rear end of the slider 110 by a bolt 150.

Wrench storage mechanism: Wrench storage mechanism 140
Are provided at the rear end of the slider 110 and include a long arm section (first arm section) 141 and a short arm section (second arm section).
142 is housed therein.
A long arm receiving chamber 145 is formed by penetrating substantially the center of the rear wall block 129 of the slider 110 in the thickness direction of the rear wall block 129 and extending along the side wall 144 of the slider 110 in the front-rear axis direction of the slider 110. On the other hand, slider 1
In the rear surface of the rear wall block 129, a short arm support surface 146 having a substantially fan shape is formed, one of the strings being on the vertical axis of the slider 110 and the other being along the side edge 129a of the rear wall block 129. ing. Since the side edge 129a is within a circle whose radius is the short arm portion 142 of the wrench 143, the short arm 142 of the wrench 143 is
When the slider 110 is rotated from the vertical axis direction of the cross section to the horizontal axis direction of the cross section of the slider 110, the end 142a protrudes from the side edge 129a. Therefore, the operator can easily grasp the short arm portion 142 of the wrench 143. In addition, short arm support surface 1
46 has a slope that gradually increases from the vertical axis direction of the cross section of the slider 110 to the left and right direction of the cross section of the slider 110 (for example,
When the short arm 142 of the wrench 143 is rotated counterclockwise in FIG. 1, the entire wrench 143 moves rearward on the front-rear axis of the slider 110. The ease of taking out the wrench 143 is increased. A rubber elastic wrench holder 147 is fixed to the center of the rear surface of the rear wall block 129 by a protrusion 147a. The wrench holder 147 holds the short arm support surface 14
6 has a C-shaped cross-section with an open end 148 that opens towards 6. The opening end 148 has a short arm holding groove 149.
It is desirable that the taper be provided with a taper extending from inside to outside. Thereby, the short arm 14 of the wrench 143
2 is easy to put in and out.

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

[Brief description of the 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 broken vertical sectional view of a pneumatic nailing machine provided with the wrench storage mechanism of FIG. 1;

[Explanation of symbols]

 13 Magazine unit 63 Magazine main body 110 Slider 129 Rear wall block 129a Side edge 141 Long arm (first arm) 142 Short arm (second arm) 143 Wrench 144 Side wall (long arm storage) 145 Long arm storage chamber 146 Short arm support surface 147 Wrench holder

Claims (1)

(57) [Scope of request for utility model registration] 1. A straight-shell zipper magazine, comprising a straight-shell zipper magazine comprising 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. A power tool having a wrench holding mechanism for holding an L-shaped wrench, the hole including a hole formed in a rear wall block of a slider, wherein the first arm is disposed along a front-rear axis of the slider and rotatably supported. A first arm receiving portion and an arc-shaped flat surface formed on the rear surface of the rear wall block of the slider and having a radius equal to the length of the second arm portion with the hole as a center. A second arm support surface that is rotatably disposed, and is formed at one end of the support surface and engages with the second arm portion to fix the movement of the second arm portion in the axial direction of the slider,
A wrench storage mechanism for a power hand tool, comprising: a wrench holder for locking a rotational movement of the second arm along a support surface.