TW200902255A - Fastener driving machine - Google Patents

Abstract

In a fastener driving machine 1 including a fastener blank striking preventive mechanism, the middle portion 52c of a lock arm 52 held by a nose portion 3 or by a magazine portion 5 is supported so as to be rotatable with respect to a support shaft 53 which is provided in the nose portion 3 or magazine portion 5, and the middle portion 52c is supported such that it can also rotated in the direction of a nose injection hole 3a while it is spaced from the support shaft 53.

Description

200902255 IX. Description of the Invention: [Technical Field] The present invention relates to a fastener driving machine that knocks fasteners such as nails, rivets and staples into a workpiece, and in particular, the present invention is A fastener drive machine including a fastener air strike prevention mechanism. [Prior Art]

C, in general, in the main driver of a pneumatic or combustion type and used to apply a reciprocating movement to the driver blade for striking fasteners such as needles, rivets or cuts. In the drive mechanism, a piston that can be internalized in the gas red is used; and on the end of the cylinder, a shock mitigation buffer for absorbing excess energy of the driver piece after striking the tight member is provided. Class: ground 'in the main body of the electric drive type (where the suspected driving force of the flywheel to be driven by the electric motor is converted into a linear driving force and transmitted by the driver piece) Γ in the end of the reciprocating passage of the drive, provided - Impact mitigation buffer state 0 These fastener drivers are individually constructed such that the slots in which a large number of connected fasteners are loaded are attached to the front end of the body of the driver (nose p, the fasteners are sequentially supplied To the front end, and the reciprocating motion of the drive is sequentially struck by the person n, the driving mechanism of the driving machine main body is struck and reciprocated, so that the driving test piece == the mechanism can be pressed by the base (four) push rod And the pull of the trigger lever ^: Interconnection # is the operation of the mechanical linkage mechanism, or is initiated by the operation based on this and the open circuit. Therefore, in the state where the fastener is not in the end of the money' When the driver blade is driven for air strike by the pusher or the like, the excessive impact is applied to the shock mitigation buffer disposed in the milk red or the like and the like. , this Reduce the length of the driver's main body or damage the main body or the front end of the driver. + Columns, disclosed by ^8·141933, a kind of anti-air strike mechanism. This type of anti-aircraft mechanism is constructed so that ^;; : The amount of fasteners in the loading slot that is connected is reduced to a given "and provides that the feeder in (4) moves forward to a given position and is known to be moved by the attendant in the feeder. The locking arm of the W^ tooth 5 movement prevents the push rod from stopping the activation of the driving mechanism of the driver blade. [Invention] When the air strike mechanism of the self-known fastener driver is inspected, the present invention has found the following problems. That is, in normal operation, the inside of the groove of the connected fastener of each of the remaining slots is fixed by the remaining amount, and the feeder is thereby moved upward to the position of the lock ... 劈 ° ' The feeder sprayer in the feeder is in phase engagement... and the other end of the lock arm is combined with the push rod to knock it #1. The pressure of the push rod is prevented from being moved. This prevents the drive piece from starting, for example, Nail): multiply: that is, when the fasteners that are loaded into the slot are connected (for example) When the amount is reduced to a given amount (for example, 'four'), because the locking brake = the end part and the spray part of the push rod cooperate to stop the movement of the push rod: :: The push operation of the cup is impossible, In this way, it is prevented to drive the door segment to move its breaking operation. Severe ^s <Unforced as the operating method of the driving machine, but the pusher is pressed by the type of tapping operation (wherein, in the offset workpiece) 123520.doc 200902255 When pressure is applied to the push rod, only @ ii ... when the trigger lever is turned to perform the drive piece knocking), the given amount or <more 乂 乘 余 余 紧固件 紧固件 不再 不再 不再 不再 不再 不再 不再 不再 不再 不再 不再Dan's wrong position is the correct position of the blade. As a result, a given amount of remnant fastener exists in the unstable two position ΐ between the in-tank feeder and the front end injection hole, and when the drive piece is opposed to the front end injection hole by this state Strike 2: The end can be blocked by a fastener such as a nail, or the fastener can be damaged: ^ The remaining fasteners in the groove are reduced to the above given amount (set amount) = can, Γ another - between the end and the push rod Halo reached - loose or gas'. - In this state, when the workpiece is pressed against the next workpiece, the push rod is moved by the two impacts or the like between the lock arm and the push rod. δ pulls the trigger lever in this state and strikes the W-end spray hole to strike the driver. It is similar to the lever type pressing operation. It can be blocked by the front end, or the fastener can be blocked. The front end of the phase injury. Accordingly, the present invention 3- _ a H is shown to provide a fastener that includes a fastener that prevents the front end portion from being blocked by a given amount or less and that prevents the fastener from damaging the front end portion. The fastener drive machine of the second strike mechanism. Another day of the present invention is to provide a fastener driving machine in which the air strike mechanism is enhanced in reliability and durability. - In achieving the above objectives, in accordance with the present patent application, a summary of the representative of the present invention is disclosed as follows: Special::: According to one aspect of the present invention, a tightness is provided. The firmware drives several "I3" drive body, which includes a drive for tapping fasteners 123520.doc 200902255 and a drive mechanism for applying reciprocating movement to the drive plate; a front end portion including - front end injection a hole through which the fastener is supplied, which is engaged with the front end portion, and which extends in a direction intersecting the extension of the front end injection hole, which includes a feeder which has a plurality of passes The connected fastener dust enters the front end of the perforating hole; the push rod can be moved parallel to the extending direction of the front end injection hole between the front position and the rear position: - a trigger lever, which can be used with one of the push rods The operation of the rear position cooperates as 'starting of the driving mechanism for controlling the main body of the driver; characterized in that the fastener driving machine has a blow preventing mechanism, and the anti-airlash mechanism includes a locking arm' One end extends to the other end and includes an intermediate portion between the two ends, the intermediate portion being disposed on the = portion or the shaft on the magazine portion in proportion to support 'they can be separated from the support shaft And: moving in the direction of the front end injection hole 'feeder salin formed on the feeder' to reduce the amount of remaining fasteners in the loading bin portion to a given: or less, the feeder meshing portion Pressing one end of the locking arm; and a push rod fitting portion formed in the push rod such that when one end of the locking arm is pressed, the push rod and the other end of the locking arm are engaged. Another aspect of Kangben ^ month 'in the above fastener driving machine' 'locking middle portion includes a rotating hole portion or a rotating slit portion, which is larger in size than the straight position ' and is rotated by a rotating portion or a rotating slit portion The support shaft in the middle. :Kangben ^Another aspect of the month' In the position before the putter, the amount of remaining tightness is reduced to a given amount and the feeder merging portion is fixed to one end of the locking arm by the rotation of the fulcrum as a fulcrum Arm, the other end of the locking arm. The sprayer is sprayed to stop the pusher from the front position to the rear position. 123520.doc 200902255

The movement of the set, and where I, s are in the position after the push #, the amount of the remaining fasteners in the station is ~ when the end of the arm of the load bin is repeated, the material is ^;; 疋 " And the feeder spray portion is opposite to the support portion of the other end of the lock arm, and the middle of the lock arm is used for supporting the lock to move in the direction of the front end injection hole. , the middle # and the fulcrum and the prevention of the holding error according to the present invention ... is controlled by the front end portion or the branch of the silo portion in the manner of attacking at the other end or twirling The support shaft can be supported in such a manner as to move away from the direction of the injection hole, so that when the push portion is allowed to serve as a support portion for supporting the other end portion of the lock arm, the end portion of the lock arm can be The intermediate portion of the lock arm is separated from the support shaft and moved in the direction of the front end injection hole. Due to this situation, the feeder of the feeder can press the fastener even when the amount of the remaining (four) pieces in the tank is reduced to a given amount or less. Therefore, a given amount or less of the remaining fasteners are not present at an unstable position in the space between the in-tank feeder and the front end injection hole, and it is always pressed to an appropriate position in the front end injection hole; and here In the state, when the driver blade is struck against the front end injection hole, the problem that the front end portion can be blocked by the fastener such as the nail and the fastener can damage the front end portion can be avoided. Therefore, the air strike prevention mechanism can be improved in reliability and durability. The above mentioned and other objects of the present invention, as well as the above mentioned and other aspects of the present invention, may be more fully understood from the following description of the specification and the accompanying drawings. [Embodiment] 123520.doc • 10-200902255 A description will now be given of an embodiment of the present invention in which a compressed air type staple driving machine is provided with reference to the accompanying drawings. In all the figures for explaining the embodiments, 'the same name is given to the parts having the same function and the repeated description thereof will be omitted, and in the following description related to the nail driving machine according to the present invention, in the fastener such as a nail The direction in which the needle driver is struck is set in a horizontal, directional state. For convenience, the direction of the fastener is expressed as "left or right", but is not limited to a specific embodiment or specific intention. When the direction in which the fastener is struck is set to the vertical direction, the direction can be interpreted as "lower or lower", and the opposite direction can be interpreted as "upper or upper" (. This expression does not limit the subject matter of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a front elevational view (including a partial cross section) of a nail drive machine according to a current embodiment of the present invention. Fig. 2 is an overall rear view (external view) of a nail driver according to an embodiment shown in the drawings. In the figure, the nail tapping direction is displayed from the left side to the right side of the drawing 2 (right side), which is opposite to the direction from the right side to the left side (left side) as shown in the figure. [The overall structure of the nail driving machine] The nail driving machine 1 includes a nail driving machine body 2 and a front end combining portion 4 composed of a front end portion 3 and a magazine portion $. The nail driving machine main body 2 is closed by a casing 9; and the casing 9 is used for closing including the cylinder 6, the piston 7 and The portion of the drive mechanism of the driver of the analog device and the portion of the handle portion 8 for gripping the staple driver and the portion for constituting the pressure storage chamber 14 constitute 0. One end (lower end) On the air plug 10, a dust cover is placed on the air plug 10 to prevent dust from entering. 123520.doc -11 - 200902255 When the nail driver body 2 is operated, the dust cover 12 is removed and An air hose from a compressor (not shown) is connected to the air plug 1 to thereby supply compressed air. Further, the front end portion 3 of the front end combination portion 4 is disposed on one end portion of the main body of the nail driving machine, and one end of the magazine portion of the front end combining portion 4 is attached to the nail driving machine by a fastening member (screw and nut) 13. On the handle portion 8 of the main body 2. The compressed air used as the driving source of the piston 7 is stored in the pressure storage chamber 14 formed in the nail driving machine main body 2 via the air plug 1'. In the nail driving machine main body 2, the female cylinder 6 is placed, and in the cylinder 6, a piston 7 which can reciprocate in the right and left directions is disposed. The piston 7 includes a driver piece integrally attached to the left surface (front end portion 3 side) of the piston 7! The driver blade is used with the leading end for sequentially striking the head of the connected needle (fastener) 15 in the front end portion 3 of the loading portion 5 from the magazine portion 5. As shown in Fig. 1, in the left portion of the cylinder 6, a front end injection hole for guiding the driver piece when the driver piece 11 and the piston 7 are axially moved on the left side (bottom dead center side) is formed. 3a; and, from the front end spray (10), the nail (10) is discharged to a workpiece such as wood (not shown). On the outer circumference of the piston 7, a shackle type ring 7a which is well known to those made of a rubber-like material is used for the sealing piston 7'. On the right side (top dead center side) of the cylinder 6, the head valve (main valve) 16 made of a flexible material is stored in the following manner: it is disposed apart from the outer casing 9. The inner wall surface of a is slidable on the left and right sides (vertical direction). The head valve 16 is not only by the pressure of the head valve spring but also by the head valve control passage that has flowed into communication with the trigger valve 17 (not shown). The pressure of the compressed air is applied to the left dead side (bottom dead side). 123520.doc •12- 200902255 The operating parts of the brakes include the trigger lever 18 and the arm that can be rotatably mounted on the =? The plate 19, and the push rod 20, the push rod 20 is extended from the front end injection hole 3a' so that it can extend to the vicinity of the #反19 in the manner of the mouth of the arm plate 19; and the trigger rod 18 can be pressed with the push rod The operation linkage operation also controls the opening and closing of the I7 trigger valve Η 17 via the operation of the trigger lever 18 which can be operated together with the pressure of the push rod: the operation of the rear position, thereby activating the reciprocating motion of the piston 7. As shown in FIG. 2, the push rod 20 includes a leading end portion which is larger from the leading end (the front end detecting hole 3a) of the front end portion 3, and a rear end portion 2bb which can be sprayed with the arm plate 19, and pushes The rod 2 is disposed on the rear surface side of the front end portion 3 while the self-leading end portion 20a is parallel to the front end The extension direction of 3a extends to the rear end portion 2〇b. On the push rod 20, an adjuster member 21 for adjusting the length of the push rod plus the whole is mounted; and the whole of the push rod 20 is provided to the adjuster member 21 The inner force is applied to the position in front of the front end portion (four) by applying a yellow force (not shown). When the leading end portion 2a of the push rod 20 is pressed against the workpiece in a normal state, the leading end portion 20a is moved back to The leading end of the front end portion 3 (the front end injection hole is called a rear position in the vicinity. As shown in the figure), as the guiding end portion (10) moves, the entire push rod 20 moves toward the trigger lever 18, and the rear end portion of the push rod moves. It is compatible with the arm plate 19, thereby allowing a starting operation that can be performed by the trigger lever 18. In Fig. 1, a control passage (not shown) for pressing the head valve 16 is connected to the trigger valve portion 17 and thus, As the plunger 17a of the trigger valve portion 17 is opened and closed on the left and right sides (opened and closed in the vertical direction), the control passage communicates with the atmosphere of the nail driver main body 2 or the compressed air stored in the pressure storage chamber. More specifically, the plunger 17a is provided to the trigger 12352. 0.doc -13- 200902255 The valve pistons in the valve portion 17 cooperate together and, therefore, as the plunger 17& moves left and right (vertical movement), the plunger 17a connects the head valve control passage to the atmosphere or is filled with compressed air. The pressure storage chamber 14 is in communication. That is, as shown in FIG. 1 'When the plunger 17a is in the left state (lower state), in other words

When the plunger 17a is biased by the coil spring provided in the trigger valve portion 17 to the left position (lower position), the head valve control passage is allowed to communicate with the pressure storage chamber 14 to supply compressed air. On the other hand, when the plunger 17 & is pulled up on the right side (in the upper direction) by the arm plate 19 and the trigger lever 18, the control passage for pressing the head valve 16 is allowed to pass through the trigger valve portion 丨7 It communicates with the outside atmosphere existing in its vicinity. Specifically, the nailing operation is described in the direction of the trigger valve portion 17 in a state where the pusher 2 is pressed against the workpiece and the pusher 2 is moved back in the rear direction to thereby push up the arm plate 19. When the trigger lever 18 is further pulled (in the upper direction), as described above, the plunger 17a is pushed on the left side (in the upper direction), thereby allowing the head valve control passage to communicate with the atmosphere via the trigger valve portion 17. As a result, the head valve "moves in the opposite direction toward its top dead center side, thereby allowing the upper piston chamber 27 defined by the piston 7 and the head valve 16 to "connect" with the pressure storage chamber, and the compressed air is self-pressured. The storage chamber 丨4 is supplied to the upper piston chamber of the piston 7, and the piston 7 is moved on the left side (upwardly downward), whereby a tapping force is applied to the driver piece u which is integrally worn on the piston 7 with the piston 7. The buffer 2 5 is used to strike the nail 15. The shock mitigation on the left end portion (lower end portion) of the cylinder 6 and the impact of the excessive energy of the absorbing piston 7 is reduced. The top dead center side shift damper 25 is constructed such that a portion thereof is larger than the movement toward the cylinder 6 The diameter of the inner diameter of the cylinder 6. 123520.doc -14- 200902255 In the outer circumference of the left end (lower end) of the gas red 6, a return air chamber 22 for returning the piston 7 from its bottom dead center to its top dead center is formed; 'Forming an air passage 23, which includes a stop that is allowed to communicate with the gas upwards and is formed in the cylinder 6 允许 to allow the cylinder 6 and the return air chamber 22 to be connected to each other = a passage one here, the air precipitator 26 is The package is used to produce the equipment such as the dust generated by the wood chips generated by the operation of the operation.

[Structure of the air strike prevention mechanism J will refer to Figure 1 (which is a front view of the fastener drive machine) and two "the side view of the fastener drive machine ( along the figure) in the direction of the Α-Α, Side view)) Describes the air strike prevention mechanism in accordance with the present invention. The material layer has an end portion 5a that engages with the front end portion 3, and the other end of the 邛 injection hole extends in the direction of the extension direction of the US: a female applicator 51, which is not only used for loading into the groove 5 or more of the connecting nails (connected fasteners) are fed from the other end end into the front end injection hole 3a and are used to tap the spring in the front end injection portion h Not shown) at one end of the silo heart: toward:, by force, whereby the feeder 51 always applies a connecting pin (fastener) 15 in the direction of the front/direction 3a via its feeding portion 仏. Since the connecting pin (fastener) 15 of the seeding is sequentially struck and consumed, the shell moves toward the front end of the spraying hole (4) to move the remaining nail (the fastener and the straight push the remaining nail (fastener)) 15 and load it into the front end injection hole 12352 〇.d〇c • 15 - 200902255 h. The feeder 51 further includes a feeder engagement portion 5 and, in turn, when the amount of remaining staples (fasteners) 15 is provided ( For example, when four nails or less, the feeder 51 presses against the lock ( (which will be discussed later) in the direction of going to the front end injection hole h.

As shown in Fig. 3, the locking arm 52 extends from the one end 52& to the other end 52b' and the locking arm 52 is inserted between its two ends & the intermediate portion is held by the front end portion 3 or by the magazine portion 5 hold. To hold the intermediate portion 52, a support shaft 53 is provided, a retaining portion "" disposed in the front end portion 3 or the magazine portion 5, and a biasing spring 52d in the direction outside the other end portion of the silo portion 5 (below Upwardly, the end portion 52a of the lock arm 52 is biased. The intermediate portion 52c of the lock arm 52 is rotatable relative to the support shaft 53 provided in the front end portion 3 or the magazine portion 5 in such a manner Further, as shown in the middle, the intermediate portion 52C is movable in the direction of the front end injection hole so as to be spaced apart from the intermediate support shaft 53 by a distance dl. In particular, the lock arm 52 is moved from the support shaft 53 in a state in which the lock arm 52 and the support shaft 53 are separated from each other. In the intermediate portion of the lock arm 52, the rotary slit portion 52f as shown in FIG. 4A or the rotary hole portion 52f as shown in FIG. 4A is formed, wherein the preparation is - go to $4, Gan a ^_ mountain + The mother 耆 to ^ has an elliptical inner peripheral shape on the other side of the injection hole direction side, so that one end portion 52a of the lock arm 52 is movable in the direction of the injection hole of the month 'j end, and the other end portion 52b is rotated. Due to this structure, the intermediate portion 52c of the locking arm 52 as shown in Fig. 12 can be from the first position P1 (where It is supported by the fulcrum 53) to move to the second position P2 (where it is separated from the fulcrum 53 by a distance d1). In the push rod 20, in a state, such as the push rod engaging portion 2 which is combined with the lock arm 52. c. As shown in Fig. 7, which will be discussed later, the locking arm 52 is flat 123520.doc •16·200902255 surface. The 卩 is engaged with the side surface portion of the push rod engaging portion 2〇c; and in another condition' As shown in Fig. 12 which will be discussed later, the face portion of the lock f52 is engaged with the plane surface portion of the pusher engaging portion 2〇c. _ [Operation of preventing the air strike mechanism] Next, reference will be made to Figs. 8 to 12 below. (This is a side view of the mechanism taken from line A in Figure i). It describes the operation of the air strike prevention mechanism.

As shown in Fig. 8, in a state where the nail is not loaded into the magazine portion 5, the feeder engaging portion 51b biased by a spring (not shown) abuts the lock arm in the N direction near the front end injection hole One end portion 52a of the 52 is pressed to thereby rotate the other end portion 52b of the lock arm 52 (with the fulcrum 53 as its fulcrum) in the 8 direction retracted from the front end injection hole 3a. Due to this, the push rod meshing portion Fully superimposed on the top of the other end portion 52b of the lock arm 52, whereby the push rod engaging portion 2〇c is rotated into a state in which it is fully engaged with the other end portion 5 of the lock arm 52. In this state, even when When the push rod 2 is pushed in the direction of the trigger lever, that is, even when the push rod 2 is pressed against the workpiece (not shown), the pusher 20 is prevented from moving in the rear position direction because the lock arm 52 is another The one end portion 52b is present in the movement path of the push rod 2〇. Therefore, the other end portion 20b of the push rod 2〇 is prevented from meshing with the arm plate 19, whereby the trigger valve portion 17 cannot be activated. That is, the driver piece 11 is made The nail tap operation stops. When this state appears as shown in Figure 8, if it is withdrawn The feeder 51 (see Fig. 1) and the fastener (nail) are supplied into the groove 5, as shown in Fig. 3, the feeder engaging portion 51b is pressed against the locking arm end portion 52a to remove its pressure, thereby locking the arm The other end portion 52b is retracted from the moving path of the push rod 20 and returns to the state shown by 123520.doc • 17· 200902255 in Fig. 3, which makes it possible to restart the operation. 2. The amount of remaining nails is equal to or more than the set amount. The state is as shown in Fig. 9, in a state where the nail is loaded into the magazine portion 5 and the remaining amount of the needles is larger than the set remaining amount (for example, five), although the feeder absorbing portion 51b is opposed to the lock arm - The end portion 52 (four), but the other end portion 52b of the arm (with the fulcrum 53 as its fulcrum) is not rotated upward to the trajectory of the push (four) joint portion I. This eliminates the push rod engagement portion 20c and the other end portion (4) of the lock arm. Possibility. In this state, when the push cup 20 is pushed in the direction of the trigger lever, as shown in Fig. 5 (which is a rear view of the fastener driver), the other end portion 52b of the lock arm 52 is on the push rod 2 Then the direction of the position moves and the other end 20b of the push rod engages with the lock arm 19, which makes It is possible to activate the trigger valve 17. That is, 'the nail tapping operation by the driver piece ji can be performed. ', 3. The remaining nail amount is equal to the set amount state as shown in Figs. 10 and 7 (which is the rear view of the fastener driver) As shown in the figure, in a state where the remaining amount of the nails loaded into the magazine portion 5 is reduced to a set amount (for example, four in the remaining of the nails), the applied feeder engaging portion 5 lb is approaching The end of the end injection hole 3a against the lock arm end portion 52& is pressed to thereby rotate the other end portion 52b of the lock arm (with the fulcrum 53 as its fulcrum) in the S direction retracted from the front end injection hole 3a. As a result, The push rod engaging portion 2〇c overlaps the top of the other end portion 52b of the lock arm 52 and is rotated into a state in which it engages with the other end portion 52b of the lock arm. As shown in FIG. 7 (which is a rear view of the fastener driver), even when the pusher 20 is pushed in the direction of the trigger lever, the other end 52b of the lock arm prevents the pusher 20 from being positioned thereafter. 123520.doc -18- 200902255 Move in the direction. This makes it impossible for the other end of the push rod to engage with the trigger lever 18. Therefore, the trigger valve portion 17 cannot be activated, whereby the nail tapping operation of the driver blade 11 is stopped. In this state, since the remaining amount of the nail is a set amount (for example, 4), the push rod engaging portion 20C is loosely or weakly engaged with the other end portion 52b of the lock arm 52. Therefore, although the pressing member 20 or the like is pressed against the push rod 20 without realizing that the remaining amount of the nail is a set amount, it is attributed to the pressing operation.

The impact or the like, in some cases, the engagement of the other end 52b of the locking arm. In the state where the engagement is removed, when the trigger lever a is pulled to thereby activate the trigger valve portion 17, the nail tapping operation by the driver blade 11 is possible. μ However, in this case, in the conventional nail driving machine, it has been found that when the workpiece is pressed against the workpiece or the like in a state where the other end of the locking arm is removed, the push rod is pressed. The flat surface portion of the engaging portion 2〇c is at the meshing portion (fulcrum) of the other end portion 52b of the lock arm, thereby preventing the lock arm-end portion 52 from rotating in the direction of the arm. In other words, in the conventional nail driving machine, the 'feeder feeding portion 51a cannot push the nail of the remaining amount equal to or less than the set amount (four or less) into the front end injection hole to the direction (in the wealth D) Therefore, the nail 15 equal to or less than the remaining amount of the set amount cannot be fed to the correct position of the front end injection hole 3a by feeding $51, whereby the needles are present in the magazine portion 5 with the feeder feed portion 51a and the front end injection The unstable position between the holes ~ between the empty ^. When the nail is in an unstable setting state, the opposite end ejection hole 3a strikes the driver sheet _, and the front end nozzle hole field is similarly blocked by the needles, or the nails can damage the front end portion 3. According to the present document 123520.doc •19- 200902255, the above mentioned problems can be avoided for the following reasons: 4. Pressure type tapping

In the second day of the Japanese car map, the state of the push is not maintained, so that the push state of the push (four) is maintained 1: that is, the pusher 2 is maintained on the workpiece. When the pressure is in a state of being pulled, pulling the trigger lever seems to be performed in succession, whereby the amount of the remaining nails 15 is reduced to a set amount (four). In other words, Fig. 11 shows a state in which the amount of the remaining needles 15 is reduced to the set amount (four) when a pressure type tapping operation is performed while the opposing member 'holds the pressing state of the push pin 20. In this state, the flat surface portion of the pressed (four) joint portion 2 to serves as the U-point of the joint portion of the other end portion of the arm. In this case, since the inner peripheral portion of the rotary hole portion 52f is formed in an elliptical shape, the movement in the direction of the intermediate portion 52^N of the arm is not restricted by the support shaft 53. Fig. 12 shows a state in which the pressure-type tapping operation is imposed in a situation similar to that shown in Fig. 2, and in particular, the meshing state in which the amount of the remaining nails 15 is reduced to a set amount or less to 〇). As described above, since the planar surface portion of the pressed push rod engaging portion 2〇c serves as the engaging portion (fulcrum point) with respect to the other end portion 52b of the lock arm and also because the lock arm intermediate portion 52c is attributed to the elliptical rotating hole portion 52f is not limited by the fulcrum 53 but can be held such that it can move in the n direction, so the feeder feeding portion 5 la can always press the remaining nail 15 into the front end injection hole 3a direction (in the N direction). In other words, since the fulcrum of the lock arm 52 is displaced from the support shaft 53 to the push rod engagement portion 2〇c, the center of rotation of the lock arm 52 can be displaced from the intermediate portion 52c to the other end portion 52b; and thus, the lock arm 52 One of the end portions 52a is movable farther in the N direction than at the original set position of the feeder engaging portion 51b. 123520.doc -20- 200902255 Therefore, even when the remaining nails 15 are reduced in number to be smaller or smaller than the set amount (four) of 'remaining nails 15', the front end injection holes can be pressed straight up by the feeder feeding portion 51a (in In the N direction), and the remaining nails are always set correctly: before:! ! Inside the hole 3a. Therefore, even when the remaining nails 15 are knocked down against the front end injection holes 3a in the state in which the remaining nails 15 are reduced to: 疋S (four), the front end injection holes 3& can be prevented from being blocked by the nails, or The front end portion 3 is prevented from being damaged by the nail in other ways.

Further, just after the amount of the nails 15 remaining in the magazine portion 5 is reduced to the above-mentioned "furrowing", the other end portion 52b of the lock arm and the push rod engaging portion Μ are formed. between. The teeth reach a loose or weak state. When it comes to the next work in this state: When the pressure is applied to the push rod, it is attributed to the rush generated when the workpiece is pressed against the push rod.

The strike or the like removes the weak engagement between the other end m of the locking arm and the pusher chew portion W. However, even in this case, similar to the above-mentioned pressure-type tapping operation, even if the amount of the remaining nails 15 is reduced to the set amount (four) as described above' because the remaining nails 15 can always be fed by The feeder feeding portion is pressed in the direction of the front end injection hole 3a (in the N direction), so that the front end injection hole 3a or the like can be prevented from being clogged with the nails or the front end portion 3 can be prevented from being damaged by the nail. Therefore, the reliability and durability of the staple drive including the air strike prevention mechanism of the present invention can be enhanced. In the above-mentioned embodiments, the drive machine has been described in the case where the nail is used as a fastener. However, the present invention can also be applied to tapping a nail such as a staple (a staple) and a screw < fastening (four) fastening < cattle drive machine. Further, even when the present invention is applied to a combustion type or electric type drive other than a compressed air type drive machine, an effect similar to the above-mentioned 123520.doc 21 200902255 compressed air type drive machine can be provided. Although the invention made by the inventors of the present invention has been specifically described based on the above-mentioned embodiments, the present invention is not limited to the above embodiments, and other various changes are also possible without departing from the scope of the subject matter of the present invention. possible. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a front elevational view of the entirety of a fastener driving machine in accordance with an embodiment of the present invention.

Figure 2 is a rear elevational view of the entirety of the fastener driving machine shown in Figure 1. Figure 3 is a side elevational view of the main portion of the fastener driver (in its initial state) shown in Figure i when viewed from the A_A line shown in the old. 4A and 4B are front views of the imaginary soft member used in Fig. 1. ' Η «The locking arm of the machine = is the rear view of the whole of the fastener drive shown in Figure i, which shows its normal tapping state. Figure 6 is a rear elevational view of the weir shown in Figure 1 prior to pressing the pusher. The entirety of the fastener driver Fig. 7 is a rear view of the figure after pressing the pusher. The overall Figure 8 of the fastener driver is shown in Figure 1 when the amount of the remaining nails is shown in Figure 1 as shown in Figure 1. Side view of the A_A line view. The firmware driver (when the amount of remaining nails is 5) is shown in Figure 1 as shown in Figure 1. It is shown in the figure: At the time of inspection, the side view of the main part of the firmware driver (when the amount of remaining nails is 4) is shown in Fig. 1. Fig. U is A_A as shown in Fig. In the line observation, the reverse view of the main part of the fastener driving machine shown in the kitchen! (in the case of the waste type tapping operation when the remaining needle y is 4). 圊η is shown in Fig. When viewing the Μ line, the side view of the main part of the center 1 firmware driver (in the case where the amount of remaining nails is 4 to ( (4)). [Main component symbol description] 1 pin. Driver 2 needle driver main body 3 front end portion 3a front end injection hole/front end spray 4 front end combination portion 4a holding portion 5 silo portion 5a - end portion 5b other end portion 6 gas rainbow 6a button 7 piston 7a 0 ring 8 handle portion 9 housing 9a separation portion injection portion / front end injection direction 123520.doc • 23- air plug driver sheet dust cover fastening member pressure storage chamber nail head valve head Part valve spring trigger valve part plunger trigger lever arm plate push rod guide end other end / rear end push rod meshing adjuster part return air chamber air passage check valve air passage shock relief buffer air dust collector Piston upper chamber - 24 - 200902255 51 Feeder 51a Feeder feed portion 51b Feeder engagement portion 52 Locking arm 52a One end portion 52b Other end portion 52c Intermediate portion 52d Force spring 52f Rotating slit portion / Rotating hole portion 53 Support shaft Dl distance N direction PI first position P2 second position S direction X direction 123520.doc -25-

Claims (1)

200902255 X. Patent Application Range: 1 · A fastener driver comprising: - a driver body comprising: a driver blade for tapping - a fastener and a (four) driver blade 16 plus - reciprocating drive a front end portion including a front end injection hole through which the fastener is supplied; a silo portion that is sprayed with the front end portion and that intersects with an extending direction of the front end injection hole Extending, comprising: a feeder for pressing "a connected fastener to press the front end injection hole; a second push cup" which is parallel to the extending direction of the front end injection hole at a front position and a rear position Moving between; the trigger cup 'which can be pressed into the rear with one of the push rods for protecting the access control and controlling the driving mechanism of the main body of the driver; The fastener driving machine has an anti-air protection mechanism including: a locking arm arm extending from the end portion to the other end portion and including a plug-in intermediate portion, the middle portion The lower mode is supported by the axis on the 亥^Huike warehouse, and the side axis is separated from the 〆, H is moved on the material perforation ^; only the sprayer is sprayed, the dragon speaks #Load the 4% s renews 11 so that when the loading is small, the amount of the two or more tight 81 pieces is reduced to 'given quantity or more - putter' * * part = the end of the locking arm β; and Formed on the push rod ♦ such that when the end portion of the lock 123520.doc 200902255 is pressed, the portion is engaged. 'The pusher and the other end of the locking arm 2. As in the item 1 of the fastener driver, i. The middle of the locking arm, one of the rotating hole forces _ ^ included in the size The slit is larger than the diameter of the fulcrum and is supported by the rotation hole portion or the fulcrum of the rotation r. 3 _ as in the position of the request item; "the cow drive machine, where 'when the front part of the putter, the remaining fasteners of the fasteners are offset - in the minus", to the given amount and When the feeder presses the end portion of the locking arm, the other end portion of the locking arm and the pushing position of the locking arm are moved from the front side by the lever engaging portion Position to the rear:: remaining = the rear position of the putter, the skirt is loaded into the silo portion 4 4, the amount is reduced to the given amount and the feed number is indented::: lock: the end of the arm: When the pressure is applied, 'by allowing the push::: locking the arm, t branching m" the support portion of the other end of the arm, the upper = the intermediate portion is spaced from the support shaft and in the front end injection hole direction 123520 .doc