EP3697573B1 - Clouseuse à air comprimé pourvue d'un actionneur de sécurité - Google Patents

Clouseuse à air comprimé pourvue d'un actionneur de sécurité Download PDF

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Publication number
EP3697573B1
EP3697573B1 EP18773222.7A EP18773222A EP3697573B1 EP 3697573 B1 EP3697573 B1 EP 3697573B1 EP 18773222 A EP18773222 A EP 18773222A EP 3697573 B1 EP3697573 B1 EP 3697573B1
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EP
European Patent Office
Prior art keywords
compressed air
safety
control
trigger
pressure
Prior art date
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Application number
EP18773222.7A
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German (de)
English (en)
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EP3697573A1 (fr
EP3697573B8 (fr
Inventor
Joachim Bauer
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Bea GmbH
Original Assignee
Joh Friedrich Behrens AG
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Priority to PL18773222T priority Critical patent/PL3697573T3/pl
Publication of EP3697573A1 publication Critical patent/EP3697573A1/fr
Publication of EP3697573B1 publication Critical patent/EP3697573B1/fr
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Publication of EP3697573B8 publication Critical patent/EP3697573B8/fr
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25C—HAND-HELD NAILING OR STAPLING TOOLS; MANUALLY OPERATED PORTABLE STAPLING TOOLS
    • B25C1/00—Hand-held nailing tools; Nail feeding devices
    • B25C1/008—Safety devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25C—HAND-HELD NAILING OR STAPLING TOOLS; MANUALLY OPERATED PORTABLE STAPLING TOOLS
    • B25C1/00—Hand-held nailing tools; Nail feeding devices
    • B25C1/04—Hand-held nailing tools; Nail feeding devices operated by fluid pressure, e.g. by air pressure
    • B25C1/041—Hand-held nailing tools; Nail feeding devices operated by fluid pressure, e.g. by air pressure with fixed main cylinder
    • B25C1/043—Trigger valve and trigger mechanism

Definitions

  • the invention relates to a pneumatic nailer with a triggering device, a safety actuator that can be displaced between a blocking position and an open position and is designed to prevent a driving process from being triggered in the blocking position, a safety control chamber that is ventilated or vented via a throttle, the Pressure in the safety control chamber exerts an actuating force on the safety actuator, and means for generating a counterforce which acts on the safety actuator and is directed opposite to the actuating force.
  • Known pneumatic nailers of this type can be used in two different operating modes. With the so-called single triggering, the pneumatic nailer is first placed on a workpiece, which actuates an attachment sensor. A trigger is then actuated by hand, thereby triggering a single driving process.
  • the user With the so-called contact triggering, also known as “touching”, the user holds the trigger down while he is applying the pneumatic nailer to the workpiece.
  • the touch probe When the workpiece is placed on the workpiece, the touch probe is activated and a drive-in process is triggered.
  • the pneumatic nailer can be used repeatedly in quick succession, which enables very quick work, in particular if many fastening means have to be driven in for adequate fastening, the positioning accuracy of which is subject to only minor requirements.
  • the contact release method increases the risk of injury. If the user keeps the trigger pressed, for example, not only when he wants to place the pneumatic nailer on one and the same workpiece at a distance of a few centimeters from the last driven fastening means, but also when he is to another, remotely located Workpiece changes, a drive-in process can be triggered if an object or part of the body accidentally touches the touch-down probe. For example, accidents can occur if a user (in disregard of important safety regulations) climbs a ladder with a pneumatic nailer, holds the trigger down and accidentally touches his leg with the touch probe.
  • a pneumatic nailer with a control valve device and a pressure-controlled control valve for automatic operation has become known.
  • the pressure-controlled control valve has an oscillating piston which swings back and forth when the trigger is permanently actuated, which leads to a continual driving in of fasteners. There is no safety mechanism that intervenes in this process in such a way that, despite proper actuation of the trigger, no driving process is triggered.
  • a pneumatic nailer of the type mentioned is from the publication EP 2 767 365 A1 known.
  • the safety actuator is a locking piston which, in the locking position, prevents a driving-in process from being triggered, in particular by engaging in an adjustment path of a pilot valve piston.
  • the means for generating a counterforce consist of a spring which presses the locking piston into an open position.
  • the safety control chamber is slowly ventilated via a throttle when a control valve coupled to the trigger is actuated. If the pressure in the safety control chamber exceeds a specified pressure threshold, the locking piston is shifted into the locking position against the force of the spring, so that (further) triggering is not possible.
  • this time control is used to limit a period in which a contact can be triggered after a previous trigger. After the period has expired, the pneumatic nailer is locked until the trigger is released, the pressure in the safety control chamber has reached its initial state again and the locking piston has returned to the open position.
  • the safety actuator is a small piston that changes the position of a rocker integrated in a release device.
  • the safety actuator is a sleeve disposed around a valve pin. In both cases, the safety actuator is displaced by a pressure in a safety control chamber against the force of a spring.
  • the object of the invention is to provide a pneumatic nailer with an improved safety mechanism.
  • the pneumatic rod is used to drive fasteners such as nails, pins or staples.
  • the pneumatic nailer can have a magazine for the fastening means, from which a fastening means is fed to a receptacle of a muzzle tool of the pneumatic nailer.
  • Both the drive and the control of the pneumatic nailer can be done completely pneumatically, a supply of electrical energy is therefore not necessary.
  • "Venting” always means that a connection to a pressureless room, in particular to the outside air, is established.
  • Vehicleation always means that a connection is made to a room carrying compressed air.
  • the release device has a manually operated release, for example in the form of a toggle or slide switch. It can also have an attachment sensor.
  • the attachment sensor is in particular a mechanical component that protrudes beyond the front end of a muzzle tool and is held in this position by a spring until the pneumatic nailer is attached to a workpiece. Then the touch-down sensor is against the direction of the spring force and against the driving direction relocated.
  • at least one control valve is actuated with the triggering device. Depending on the design, it may be necessary to actuate the trigger and the touch-up sensor together, possibly also in a specific sequence.
  • the safety actuator can be moved between an open position and a locked position. In the open position, a driving process can be triggered by properly actuating the triggering device. If the triggering device comprises, for example, a manually operated trigger and a touch-down sensor, the joint actuation of which leads to the actuation of a control valve, which pressurizes the working piston, possibly with the involvement of further valves, then this sequence takes place when the triggering device is properly operated.
  • the safety actuator can always be in its open position. In this respect, it does not take an active part in the release and drive-in process.
  • the safety actuator if it is in its locked position, it prevents a drive-in process from being triggered.
  • the safety actuator intervenes in the triggering and driving process in such a way that proper actuation of the triggering device does not trigger a driving process.
  • the safety actuator can interrupt a mechanical chain of action between the triggering device and a control valve activated by the triggering device, for example by canceling a mechanical engagement between a touch-down sensor and an actuating element that acts on the control valve.
  • the safety actuator can perform a valve function.
  • it in the blocking position, it can, for example, shut off a line that is to be ventilated or vented to trigger a driving process.
  • this line In the open position of the Safety actuator, this line can be open or be connected to a control valve arrangement.
  • the safety actuator can perform a locking function, for example by blocking a pressure-actuated valve actuator or limiting its adjustment path.
  • the position in which the safety actuator is located depends largely on the relationship between the actuating force and the counterforce, the magnitude of the actuating force depending on the pressure in the safety control chamber. It changes over time as a result of air flowing into or escaping from the safety control chamber via the throttle.
  • the inventors have recognized that the time course of this pressure change in the safety control chamber depends on the current operating pressure and that this, in conjunction with a counterforce exerted by a spring and not dependent on the operating pressure, leads to fluctuations in the time it takes for the safety actuator to move into the blocking position elapses. This can have the consequence, for example, that at a relatively low operating pressure, successive contact releases are possible in a time cycle of 5 seconds, because the safety actuator only moves into the locked position after 5.1 seconds.
  • the invention provides a remedy here in that the means for generating the counterforce are designed in such a way that the magnitude of the counterforce is linearly dependent on an operating pressure of the pneumatic nailer.
  • the actuating force and the counterforce are equally affected by fluctuations in the operating pressure.
  • the pressure threshold of the The pressure in the safety control chamber which must be exceeded in order to overcome the counterforce, is also dependent on the operating pressure.
  • the time until the pressure threshold is exceeded remains largely independent of the operating pressure.
  • the pneumatic nailer always reacts in the usual way, even with considerable fluctuations in the operating pressure.
  • the period of time in which a further release is possible after a release remains largely constant.
  • the means for generating a counterforce are designed so that the size of the counterforce is in the range from 10% to 90% of the actuating force when there is operating pressure in the safety control chamber.
  • the magnitude of the counterforce is preferably in the range from 30% to 70% of the actuating force when there is operating pressure in the safety control chamber.
  • the counterforce which is linearly dependent on the operating pressure, thus reaches a size that corresponds to the actuating force at a medium pressure in the safety control chamber. Any other forces that act on the safety actuator and that depend non-linearly on the operating pressure, for example weight forces or elastic forces, therefore have no significant influence on the position of the safety actuator and on the time until the safety actuator is shifted.
  • the means for generating a counterforce have a control chamber, the pressure in the control chamber acting on the safety actuator. Regardless of how the pressure is generated in the control room in detail, its size fluctuates with the operating pressure. It is therefore a particularly simple solution to generate a counterforce that is linearly dependent on the operating pressure.
  • the pressure in the safety control chamber acts on a first effective area of the safety actuator and the pressure in the control chamber acts on a second effective area of the safety actuator, the second effective area is smaller than the first effective area.
  • the size of the second effective area is in the range from 10% to 90% of the size of the first effective area.
  • the size of the second effective area can be in the range from 30% to 90% of the size of the first effective area. This ensures that even if additional forces not dependent on the operating pressure act on the safety actuator, the position of the safety actuator is largely determined by the pressures in the safety control chamber and in the control room.
  • the compressed air nailer can have a compressed air connection via which it is supplied with a specific operating pressure. If there is a constant connection between the compressed air connection and the control room, there is always operating pressure in the control room. The counterforce is then only dependent on the operating pressure, not on an operating state of the pneumatic nailer.
  • a spring which exerts an additional force on the safety actuator.
  • the additional force can act in the direction of the actuating force or in the direction of the counterforce. Since it is exercised by a spring, it is independent of the operating pressure. It can therefore preferably be selected to be relatively small, for example less than 10% of the actuating force that is exerted by the pressure in the safety control chamber when operating pressure prevails in the safety control chamber.
  • the advantage of the spring is that the safety actuator is moved into a preferred position when the pneumatic nailer is not connected to a compressed air supply. This ensures a defined initial state when the pneumatic nailer is started up. If the preferred position is the locked position, moves the safety actuator at least once each time the pneumatic nailer is used, which counteracts the seizing of the safety actuator.
  • the triggering device has a trigger and an attachment sensor which, when actuated together, can control a first control valve and trigger a driving process, the safety actuator being designed to cancel a mechanical engagement between the triggering device and the control valve in the blocking position.
  • the trigger and the touch-down sensor can be coupled via a mechanical actuating element such as a rocker and the safety actuator can cancel an engagement between the touch-down sensor and the mechanical actuating element in the locked position and establish / allow it in the open position.
  • the pneumatic nailer has a first control line, the ventilation of which triggers a driving process, the safety actuator being designed to shut off a connecting line between the first control line and the triggering device in the blocking position.
  • the connecting line can be continuous.
  • the safety actuator thus performs a valve function.
  • the triggering device has a trigger and an attachment sensor which, when actuated together, trigger a first control valve and trigger a driving process if the pressure in the safety control chamber is above a pressure threshold, and a second control valve which, when the trigger is actuated, is independent of actuation of the attachment sensor, the safety control chamber being continuously vented via the throttle regardless of the position of the second control valve and being separated from a pressurized housing interior when the second control valve is activated.
  • the second control valve is activated when the trigger is actuated independently of an actuation of the touch-down sensor, that is, every time the Trigger.
  • a control pin of the second control valve can be arranged in such a way that it is displaced from its rest position each time the trigger is actuated.
  • a small air flow always escapes via the throttle. This can be heard acoustically and indicates to a user that the pneumatic nailer is ready for operation and that a contact can be triggered if necessary.
  • the safety control chamber is no longer ventilated and the operating noise quickly decreases until it stops. This indicates to the user that the trigger must first be released for a further trigger.
  • an opening cross-section of the throttle is dimensioned such that the actuating force falls below the counterforce after a period of time in the range from 1 second to 10 seconds after activation of the second control valve. At this moment, the safety actuator is moved into the locked position.
  • said period of time can be in the range from 2 seconds to 6 seconds, preferably around 4 seconds.
  • a check valve via which the safety control chamber is ventilated when a driving-in process is triggered. This measure leads to a reset of the pressure in the safety control chamber regardless of the actuation of the triggering device. The period in which a further trip is possible begins again.
  • the pneumatic nailer 10 has a handle 12 which is fastened to a lower housing part 140 which is closed at the top by a housing cap 142.
  • the compressed air rod 10 has an attachment sensor 24 which protrudes downward by a few millimeters over the mouth 26 of a mouth tool 28. If the pneumatic nailer 10 is applied to a workpiece, the attachment sensor 24 is displaced upwards against the force of a spring (not shown) until it is flush with the mouth 26 or only protrudes slightly beyond the mouth 26.
  • the touch-down sensor 24 is mechanically coupled to a force transmission element 30 which moves with the movement of the touch-down sensor 24 upwards.
  • the muzzle tool 28 has a receptacle 46, each of which is supplied with a fastening means from a magazine 48. From this position within the receptacle 46, the fastening means - for example a nail, a pin or a clamp - is driven in by a driving ram 50 which is connected to a working piston 52 of the pneumatic nailer 10. For this purpose, the working piston 52 is guided in a working cylinder 54. A main valve 56 is arranged above and sealingly closing the working cylinder 54, to the right of it a pilot valve 58 which controls the main valve 56. Details of these elements as well as the related function of the device are shown on the basis of the enlarged section of the Figure 2 explained in more detail.
  • the pilot valve 58 is best in the Figure 2 recognizable. It has a control piston 94 which is guided in a guide sleeve 96. The lower end of the control piston 94 is sealed with a lower O-ring 100 with respect to the guide sleeve 96.
  • a first control line 82 which is connected to a working volume of the pilot valve 58, is vented and the control piston 94 is in the lower position shown. It is held in this position by the force of a spring 102.
  • control piston 94 has a middle O-ring 104 and an upper O-ring 106.
  • the upper O-ring 106 seals the control piston 94 against the guide sleeve 96 and closes a connection to a ventilation opening, not shown, which is connected to outside air.
  • the middle O-ring 104 is not in a seal, so that a main control line 110 is connected to the housing interior 64 via a radial bore 112 in the guide sleeve 96 and the annular gap 70 between the control piston 94 and guide sleeve 96 past the middle O-ring 104.
  • the main control line 110 is connected to the space 72, which opens into the radial bore 112, via a connection not visible in the sectional plane shown.
  • the housing interior 64 is ventilated in the initial state of the pneumatic nailer 10, i. H. connected to a compressed air connection (not shown) and under operating pressure.
  • the main control line 110 is connected to a space 114 above a main valve actuator 116 of the main valve 56, so that the main valve actuator 116 is subjected to a downward force and thereby the upper edge of the working cylinder 54 by means of an O-ring 118 opposite the housing interior 64 seals.
  • the main valve actuator 116 is acted upon by a spring 120 with a force in the direction of the position shown, which closes the working cylinder 54.
  • a driving-in process is triggered by venting the first control line 82 in that the control piston 94 is displaced upwards so that the middle O-ring 104 comes into the seal and the upper O-ring 106 moves out of the seal.
  • the connection between the main control line 110 and the housing interior 64 is blocked and a connection between the main control line 110 and a ventilation opening (not shown) is established.
  • the space 114 above the main valve actuator 116 is vented via the vent opening and the main valve actuator 116 is displaced upwards against the force of the spring 120 by the pressure on its lower, outer annular surface 122 in the housing interior 64.
  • compressed air flows out of the housing interior 64 into the working cylinder 54 above the working piston 52 and drives the working piston 52 downwards.
  • the driving ram 50 connected to the working piston 52 drives a fastening means.
  • a release device which is shown in Fig. 1 is covered by an area surrounded by a dashed line. Details of the release mechanism are based on the Figures 3 to 6 explained in more detail.
  • the trigger 14 is mounted pivotably about a pivot axis 16 in a position on the housing of the pneumatic nailer 10 that is easy to grip.
  • the trigger 14 has a button 18 which, when the trigger 14 is actuated, displaces a switching pin 20 of a second control valve 22 upwards. This activation of the second control valve 22 takes place each time the trigger 14 is actuated, regardless of the position of the contact sensor 24.
  • the force transmission element 30 of the attachment sensor 24 is movably guided on the housing of the pneumatic nailer 10 and for this purpose has an elongated hole 32 through which a guide pin 98 is passed.
  • the attachment sensor 24 the force transmission element 30 is displaced from the position shown in FIG Fig. 3 Drawn starting position upwards and thereby takes the free end of a rocker 36 with it, the fixed end of which is hinged about a pivot axis 38 in the interior of the trigger 14 and near its free end.
  • the rocker 36 is then arranged approximately parallel to a longitudinal direction of the trigger 14 and its upper side acts as a button 40 which, when the contact sensor 24 and the trigger 14 are operated together, moves a switching pin 42 of a first control valve 44 upwards and thus controls the first control valve 44 .
  • the first control line 82 which leads to the pilot control valve 58, can be seen at the top left.
  • a safety actuator 34 is shown, which performs a valve function.
  • the safety actuator 34 is displaceable between an open position and a blocking position. In the Fig. 3 it is drawn in its open position.
  • the safety actuator 34 is guided in a sleeve 66 and has a central section 68. In the area of the middle section 68, the sleeve 66 has a radial bore 60. At the lower end of the middle section 68, the safety actuator 34 has a lower piston section 74, which is sealed with an O-ring 76 from a cylindrical space. The part of this cylindrical space located below the piston section 74 forms a safety control chamber 62. The pressure prevailing in the safety control chamber 62 exerts an actuating force on the lower piston section 74 and thus on the safety actuator 34 and tries to move it into its open position or in it to keep. The safety control chamber 62 is connected to outside air via a throttle 86.
  • the safety actuator 34 has an upper piston section 78, which is likewise guided in a cylindrical space and is sealed off from this with an O-ring 80.
  • the upper piston section 78 is manufactured as a separate part and rests on the lower piston section 74.
  • the part of the cylindrical space arranged above the upper piston section 78 forms a control space 84 which is permanently connected to a housing interior 64.
  • the housing interior 64 is ventilated.
  • the operating pressure prevailing in the control chamber 84 thereby exerts a counterforce on the upper piston section 78 and thus on the safety actuator 34. This counterforce is directed opposite to the actuating force and tries to move the safety actuator 34 into its blocking position.
  • the second control valve 22 is not actuated.
  • the two O-rings 90, 92 of the second control valve 22 are not sealed, so that a line 124 leading to the first control valve 44 is connected to the housing interior 64 via the second control valve 22.
  • the air flows from the line 124 through an annular gap 126 which surrounds a sleeve 88 of the second control valve 44, and a bore 128 in the safety control chamber 62. Because the amount of air escaping at the same time via the throttle 86 compared to this The inflow is negligible, there is always essentially operating pressure in the initial state in the safety control chamber 62.
  • the actuating force exerted on the safety actuator 34 by the pressure in the safety control chamber 62 is greater than the counterforce exerted by the operating pressure in the control chamber 84.
  • the safety actuator 34 therefore remains in its open position.
  • the first control line 82 is connected to a line 134 leading to the first control valve 44 via a radial bore 132 in the central section 68 of the safety actuator 34 and an annular gap 130, as well as the radial bore 68 in the sleeve 66. Since an O-ring 136 of the first control valve 44 is not in a seal in the non-actuated position of the first control valve 44, the line 134 via the first control valve 44 is with it Outside air connected. At the same time, the O-ring 138 of the first control valve 44 is in a seal and separates the line 134 from the housing interior 64.
  • Fig. 4 the trigger 14 was actuated and with it the second control valve 22. It can be seen that the switching pin 20 of the second control valve 22 has shifted upwards.
  • the O-ring 90 is now in a seal and separates the housing interior 64 from the line 124. This ends the air supply to the safety control chamber 62, so that the pressure in the safety control chamber 62 slowly decreases due to the air escaping via the throttle 86.
  • the O-ring 92 is also in a seal. In the event of a leak in the O-ring 90, it prevents a leakage flow from flowing to the line 124. Instead, such a leakage flow is discharged to the outside via the transverse bore 146 located between the two O-rings 90, 92 in the valve pin 20.
  • Another O-ring 158 of the second control valve 22 is still in a seal, so that the line 124 is separated from outside air when the second control valve 22 is actuated.
  • Another effect of the ventilation of the line 134 is that through the annular gap 130, the radial bore 132 and an axial bore 148, which extends centrally over a large part of the length through the safety actuator 34, as well as through a further radial bore 150 in the safety actuator 34 and the O-ring 152 acting as a check valve ventilates the safety control chamber 62 will.
  • the pressure in the safety control chamber 62 is, as it were, refreshed, so that the period of time in which a further contact release is possible begins anew.
  • the contact sensor 24 If the contact sensor 24 is not actuated within this period, the pressure in the safety control chamber 62 finally drops so far that the counterforce outweighs the actuating force and the safety actuator 34 moves into its blocking position. This is in Fig. 6 shown. If the contact sensor 24 and with it the first control valve 44 are now actuated again, the line 134 is ventilated again. However, because of the two sealed O-rings 154, 156 on the central section 68 of the safety actuator 34, this has no consequences. In the blocking position, the safety actuator 34 blocks the line 134 from both the first control line 82 and from the safety control chamber 62. A further driving process can therefore only be triggered again when the trigger 14 is released and the pressure in the safety control chamber 62 is restored via the second control valve 22, so that the safety actuator is shifted into its open position.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Portable Nailing Machines And Staplers (AREA)

Claims (12)

  1. Cloueuse à air comprimé (10) avec
    • un piston de travail (52), qui est relié à un poussoir d'enfoncement (50) servant à enfoncer un moyen de fixation et qui est soumis à de l'air comprimé lors du déclenchement d'un processus d'enfoncement,
    • un dispositif de déclenchement servant à déclencher un processus d'enfoncement,
    • un actionneur de sécurité (34), qui est déplaçable entre une position de blocage et une position d'ouverture et qui est conçu de manière à intervenir dans le processus de déclenchement et d'enfoncement en position de blocage, de sorte qu'un actionnement correct du dispositif de déclenchement ne déclenche aucun processus d'enfoncement,
    • une chambre de commande de sécurité (62), qui est aérée ou désaérée par un papillon (86), sachant que la pression dans la chambre de commande de sécurité (62) exerce une force de réglage sur l'actionneur de sécurité (34),
    • les moyens servant à générer une force antagoniste, qui agit sur l'actionneur de sécurité (34) et est dirigée en sens inverse de la force de réglage, sachant que
    • les moyens servant à générer une force antagoniste sont conçus de manière à ce que la grandeur de la force antagoniste dépend linéairement d'une pression de service de la cloueuse à air comprimé (10).
  2. Cloueuse à air comprimé (10) selon la revendication 1, caractérisée en ce que les moyens servant à générer une force antagoniste sont conçus de manière à ce que la grandeur de la force antagoniste se situe dans la plage de 10 % à 90 % de la force de réglage, lorsqu'une pression de service règne dans la chambre de commande de sécurité (62).
  3. Cloueuse à air comprimé (10) selon la revendication 1 ou 2, caractérisée en ce que les moyens servant à générer une force antagoniste présentent un compartiment de commande (84), sachant que la pression dans le compartiment de commande (84) agit sur l'actionneur de sécurité (34).
  4. Cloueuse à air comprimé (10) selon l'une des revendications 1 à 3, caractérisée en ce que la pression dans la chambre de commande de sécurité (62) agit sur une première surface effective de l'actionneur de sécurité (34) et la pression dans le compartiment de commande (84) agit sur une seconde surface effective de l'actionneur de sécurité (34), sachant que la seconde surface effective est plus petite que la première surface effective.
  5. Cloueuse à air comprimé (10) selon la revendication 4, caractérisée en ce que la grandeur de la seconde surface effective se situe dans la plage de 10 % à 90 % de la grandeur de la première surface effective.
  6. Cloueuse à air comprimé (10) selon l'une des revendications 3 à 5, caractérisée en ce qu'une pression de service règne constamment dans le compartiment de commande (84), lorsque la cloueuse à air comprimé (10) est raccordée à une alimentation en air comprimé.
  7. Cloueuse à air comprimé (10) selon l'une des revendications 1 à 6, caractérisée en ce qu'un ressort est disponible, qui exerce une force supplémentaire sur l'actionneur de sécurité (34).
  8. Cloueuse à air comprimé (10) selon l'une des revendications 1 à 7, caractérisée en ce que le dispositif de déclenchement présente un déclencheur (14) et un palpeur de pose (24), qui peuvent activer une première soupape de commande (44) et déclencher un processus d'enfoncement lorsqu'ils sont actionnés conjointement, sachant que l'actionneur de sécurité (34) est conçu de manière à suspendre une intervention mécanique entre le dispositif de déclenchement et la première soupape de commande (44) dans la position de blocage.
  9. Cloueuse à air comprimé (10) selon l'une des revendications 1 à 7, caractérisée en ce que la cloueuse à air comprimé (10) présente une première conduite de commande (82), dont l'aération ou la désaération déclenche un processus d'enfoncement, sachant que l'actionneur de sécurité (34) est conçu de manière à couper une conduite de raccordement entre la première conduite de commande (82) et le dispositif de déclenchement dans la position de blocage.
  10. Cloueuse à air comprimé (10) selon l'une des revendications 1 à 7, caractérisée en ce que le dispositif de déclenchement présente un déclencheur (14) et un palpeur de pose (24), qui activent une première soupape de commande (44) et déclenchent un processus d'enfoncement lorsqu'ils sont actionnés conjointement, au cas où la pression dans la chambre de commande de sécurité (62) se situe au-dessus d'un seuil de pression prédéfini, ainsi qu'une seconde soupape de commande (22), qui est activée indépendamment d'un actionnement du palpeur de pose (24) lors d'un actionnement du déclencheur (14), sachant que la chambre de commande de sécurité (62) est désaérée continuellement par le papillon (86) indépendamment de la position de la seconde soupape de commande (22) et est séparée par un espace intérieur de boîtier (64) se trouvant sous pression lors de l'activation de la seconde soupape de commande (22).
  11. Cloueuse à air comprimé (10) selon la revendication 10, caractérisée en ce qu'une section d'ouverture du papillon (86) est dimensionnée de telle sorte que la force de réglage est inférieure à la force antagoniste une fois écoulée une durée dans la plage de 1 seconde à 10 secondes après l'activation de la seconde soupape de commande (22).
  12. Cloueuse à air comprimé (10) selon l'une des revendications 1 à 11, caractérisée par un clapet antiretour, au moyen duquel la chambre de commande de sécurité (62) est aérée lors du déclenchement d'un processus d'enfoncement.
EP18773222.7A 2017-10-18 2018-09-27 Clouseuse à air comprimé pourvue d'un actionneur de sécurité Active EP3697573B8 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL18773222T PL3697573T3 (pl) 2017-10-18 2018-09-27 Gwoździarka pneumatyczna z przestawnym członem zabezpieczającym

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP17197102.1A EP3473385A1 (fr) 2017-10-18 2017-10-18 Clouseuse à air comprimé pourvue d'un actionneur de sécurité
PCT/EP2018/076327 WO2019076605A1 (fr) 2017-10-18 2018-09-27 Cloueuse pneumatique comprenant un organe de réglage de sécurité

Publications (3)

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EP3697573A1 EP3697573A1 (fr) 2020-08-26
EP3697573B1 true EP3697573B1 (fr) 2021-09-01
EP3697573B8 EP3697573B8 (fr) 2021-11-24

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EP17197102.1A Withdrawn EP3473385A1 (fr) 2017-10-18 2017-10-18 Clouseuse à air comprimé pourvue d'un actionneur de sécurité
EP18773222.7A Active EP3697573B8 (fr) 2017-10-18 2018-09-27 Clouseuse à air comprimé pourvue d'un actionneur de sécurité

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US (1) US11628548B2 (fr)
EP (2) EP3473385A1 (fr)
JP (1) JP7314123B2 (fr)
CN (1) CN111225769B (fr)
AU (1) AU2018351907B2 (fr)
BR (1) BR112020006457A2 (fr)
ES (1) ES2899392T3 (fr)
PL (1) PL3697573T3 (fr)
TW (1) TWI755570B (fr)
WO (1) WO2019076605A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11491623B2 (en) 2019-10-02 2022-11-08 Illinois Tool Works Inc. Fastener driving tool
EP4211378A1 (fr) * 2020-09-10 2023-07-19 Globalforce IP Limited Améliorations apportées ou liées à des clapets de déclenchement

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US3477629A (en) 1966-11-23 1969-11-11 Senco Products Pneumatic fastener applying device
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SU418316A1 (fr) 1972-02-28 1974-03-05
SU537809A1 (ru) 1974-02-15 1976-12-05 Всесоюзный Научно-Исследовательский И Экспериментально-Конструкторский Институт Тары И Упаковки Пневматический пистолет дл забивани крепежных элементов в дерев нные конструкции
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US20200238492A1 (en) 2020-07-30
JP7314123B2 (ja) 2023-07-25
RU2020113424A3 (fr) 2021-12-27
CN111225769A (zh) 2020-06-02
TWI755570B (zh) 2022-02-21
AU2018351907B2 (en) 2024-05-02
JP2020537596A (ja) 2020-12-24
PL3697573T3 (pl) 2022-01-31
TW201922433A (zh) 2019-06-16
EP3697573A1 (fr) 2020-08-26
BR112020006457A2 (pt) 2020-10-06
EP3697573B8 (fr) 2021-11-24
US11628548B2 (en) 2023-04-18
WO2019076605A1 (fr) 2019-04-25
AU2018351907A1 (en) 2020-04-23
ES2899392T3 (es) 2022-03-11
EP3473385A1 (fr) 2019-04-24
RU2020113424A (ru) 2021-11-18
CN111225769B (zh) 2023-06-09

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