EP3703911B1 - Cloueur à air comprimé pourvu d'un système de soupape de sécurité - Google Patents

Cloueur à air comprimé pourvu d'un système de soupape de sécurité Download PDF

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Publication number
EP3703911B1
EP3703911B1 EP18773225.0A EP18773225A EP3703911B1 EP 3703911 B1 EP3703911 B1 EP 3703911B1 EP 18773225 A EP18773225 A EP 18773225A EP 3703911 B1 EP3703911 B1 EP 3703911B1
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EP
European Patent Office
Prior art keywords
valve
trigger
compressed air
safety control
sleeve
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP18773225.0A
Other languages
German (de)
English (en)
Other versions
EP3703911A1 (fr
Inventor
Martin THEBERATH
Florian Jung
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
Bea GmbH
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Filing date
Publication date
Application filed by Bea GmbH filed Critical Bea GmbH
Priority to PL18773225T priority Critical patent/PL3703911T3/pl
Publication of EP3703911A1 publication Critical patent/EP3703911A1/fr
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Publication of EP3703911B1 publication Critical patent/EP3703911B1/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
    • 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
    • B25C1/042—Main valve and main cylinder
    • 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
    • B25C1/044—Hand-held nailing tools; Nail feeding devices operated by fluid pressure, e.g. by air pressure with movable main cylinder
    • B25C1/046—Trigger valve and trigger mechanism
    • 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
    • B25C1/047—Mechanical details

Definitions

  • the invention relates to a pneumatic nailer which has a trigger, an attachment sensor and a trigger valve with a valve pin and a valve sleeve.
  • a control line is pressurized or vented in order to trigger a driving process.
  • the valve pin is operated by a button that is coupled to the trigger and / or to the touch probe.
  • the attachment sensor is displaced against the force of the spring until a muzzle tool rests or almost rests on the workpiece.
  • a drive-in process can only be triggered when the touch-up sensor is actuated in this way.
  • the pneumatic nailers offer considerably better security against unintentional triggering.
  • Some pneumatic nailers of the type described can be used in two different operating modes: With the so-called single triggering, the pneumatic nailer is first placed on a workpiece and the touch probe is activated. The trigger is then actuated by hand, thereby triggering a single driving process. 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. When the workpiece is placed on the workpiece, the touch-down sensor is actuated, thereby triggering a drive-in process.
  • 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 only subject to low requirements.
  • the contact release method increases the risk of injury. If the user keeps the manually operated 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 changes to another, remotely located workpiece a drive-in process can be triggered if an object or part of the body is accidentally touched by the touch probe. For example, accidents can occur if a user (in disregard of important safety regulations) climbs up a ladder with a pneumatic nailer, holds the trigger down and accidentally touches his leg with the touch probe.
  • Some known pneumatic nailers try to reduce this risk associated with the contact release operation by ensuring that a contact release is only possible for a short period of time after the release has been actuated or after a driving process. Once the period has elapsed, the trigger must first be released.
  • An example of this is from the publication EP 2 767 365 B1 known.
  • the pneumatic nailer described therein has a trigger and an attachment sensor, each of which is assigned a control valve.
  • the known device has a safety control chamber, the pressure of which acts on a locking piston. In a certain position of the locking piston, the triggering of a driving process is prevented.
  • the safety control chamber is ventilated via the control valve assigned to the trigger and a throttle.
  • the pressure prevailing in the control chamber acts on a valve sleeve that surrounds the control valve, and finally shifts this valve sleeve into a blocking position in which full actuation of the valve pin can no longer vent the main control line, so that a contact cannot be triggered.
  • a first trip is only possible in single trip mode.
  • these devices must first be attached to the workpiece, which actuates the touch-down probe.
  • a subsequent actuation of the trigger then triggers the first driving process.
  • further driving processes can be carried out by contact triggering, i.e. by repeatedly lifting and placing the device on the workpiece while the trigger is continuously activated.
  • contact triggering i.e. by repeatedly lifting and placing the device on the workpiece while the trigger is continuously activated.
  • a trigger and an attachment sensor are mechanically coupled via a rocker, which acts on a control valve in order to trigger a drive-in process.
  • the mechanical actuator is a valve sleeve guided in an outer sleeve, in which a valve pin of a release valve is led. In the blocking position, the valve sleeve holds the valve pin and with it the rocker resting on the valve pin in a position in which the rocker is missed by the attachment sensor. Then another release is only possible after the trigger has been released and the device has been removed from the workpiece.
  • the object of the invention is to provide a pneumatic nailer with an effective, robust and reliable safety mechanism.
  • the pneumatic nailer has
  • 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, so a supply of electrical energy is not necessary.
  • "Venting” always means that a connection to a pressureless room, in particular to the outside air, is established.
  • Vententilation always means that a connection is made to a room carrying compressed air.
  • the trigger can be implemented, for example, in the form of a toggle or slide switch.
  • the attachment sensor can be 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 probe is shifted against the direction of the spring force and against the driving direction.
  • a control line In order to trigger a driving process, a control line must be pressurized or vented. This is done via a release valve that is actuated by moving a valve pin relative to a valve sleeve.
  • the valve sleeve for its part, is guided in an outer sleeve (usually arranged in a fixed position relative to a housing of the pneumatic nailer) so that it can be displaced between a release position and a blocking position.
  • the position in which the valve sleeve is located relative to the outer sleeve depends on a pressure in a safety control chamber.
  • the safety control chamber thus offers the possibility of realizing a time-controlled behavior of the pneumatic nailer.
  • the pressure in the safety control chamber can be controlled in such a way that it exceeds or falls below a predetermined pressure threshold after a predetermined period of time that has elapsed since the last driving process and / or since the last actuation of the trigger.
  • valve pin is actuated by means of a button that is coupled to the trigger and / or to the attachment sensor.
  • this coupling does not require a complicated, possibly fault-prone mechanism, but is designed so that the button is always in a fixed, predetermined switching position relative to the outer sleeve when both the trigger and the touch-down sensor are actuated.
  • the sequence in which the trigger and the touch-down sensor are actuated is irrelevant.
  • Whether or not a drive-in process is triggered does not depend on the effectiveness of the coupling between the trigger and the touch-down sensor, but essentially only on the position of the valve sleeve relative to the outer sleeve.
  • the button is always in the switch position when the trigger and the touch probe are operated together. If the valve sleeve is then in the release position, the button moves the valve pin into the actuated position. On the other hand, if the valve sleeve is in the locked position, the button does not move the valve pin into the actuated position.
  • the pneumatic nailer is thus characterized by a particularly simple and robust structure.
  • the pneumatic nailer has a safety control valve which is activated by the trigger and which controls ventilation of the safety control chamber.
  • the pressure curve in the safety control chamber therefore depends directly on the actuation of the trigger.
  • a connection between the safety control chamber and a ventilated housing interior is blocked by the safety control valve when the trigger is actuated.
  • the safety control chamber is permanently and directly ventilated via the safety control valve when the trigger is not actuated. This ventilation ends when the trigger is pressed.
  • the safety control chamber is connected to outside air via a throttle. If the safety control chamber is ventilated, this leads to a continuous, slight flow of air that may be accompanied by an audible noise. This operating noise can indicate to a user that the pneumatic nailer is ready for operation.
  • the pressure in the safety control chamber slowly decreases, so that if the pressure falls below a threshold in the safety control chamber, the valve sleeve moves into the blocking position and prevents further triggering.
  • a user can recognize from the decreasing operating noise that he first has to let go of the trigger again before another drive-in process.
  • the button is formed on a rocker that has a fixed end and a free end, the fixed end being rotatably mounted on the trigger and the free end being carried along by the touch probe when the touch probe is actuated.
  • This configuration is a tried and tested way of coupling the button with the trigger and the touch-up sensor. Regardless of the sequence in which it is pressed, the button is always brought into the same switch position when the trigger and the touch probe are pressed.
  • the button is formed on the touch-down sensor and has a fixed position relative to the touch-down sensor.
  • the button is only linked to the touch probe and not to the trigger. If the valve sleeve is in the release position, the release valve is activated every time the attachment sensor is actuated. If the trigger is also in an actuated position, a driving process is triggered in each case.
  • the safety control valve and the release valve are connected in series. This means that the safety control valve and the release valve must be actuated at the same time for the desired ventilation of the control line.
  • an output of the release valve can be connected directly or indirectly to the control line, while an input of the release valve is connected to an output of the safety control valve.
  • An input of the safety control valve can be connected to a ventilated housing interior. In this case, there can be a fixed assignment to the effect that the contact sensor acts directly on the trigger valve and the trigger acts directly on the safety control valve. A mechanical coupling of the release and the touch-up sensor is not required.
  • the safety control chamber is pressurized or deflated via the release valve and a check valve when the valve pin is moved into the actuated position relative to the valve sleeve.
  • the pressure in the safety control chamber is "reset” at the same time as a driving-in process is triggered.
  • a driving-in process With each drive-in process, a defined initial situation is created with regard to the pressure in the safety control chamber.
  • a predetermined time window can be opened for triggering further driving processes when the trigger is permanently activated.
  • the check valve is integrated into the valve sleeve.
  • the check valve can have an O-ring which is held in a circumferential groove in the valve sleeve and which seals a radial bore in the valve sleeve arranged in the groove.
  • the safety control chamber has an annular space which is delimited by two seals which are inserted between the outer sleeve and the valve sleeve and are spaced apart from one another in the axial direction and in the radial direction. This measure also favors a particularly compact structure. Another advantage is that the volume of the safety control chamber remains unaffected by actuation of the valve pin.
  • a permanently ventilated counterpressure chamber is present, the pressure in the counterpressure chamber exerting a counterforce on the valve sleeve which is directed opposite to the force exerted on the valve sleeve by the pressure in the safety control chamber.
  • a spring can be used to exert a counterforce on the valve sleeve.
  • the counter-pressure chamber has an annular space which is delimited by two seals which adjoin the valve sleeve and are spaced apart from one another in the axial direction and in the radial direction. This also contributes to a particularly compact structure.
  • the valve pin can simply be guided to the outside through a central opening in the counter-pressure chamber.
  • 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 over the mouth 26 of a mouth tool 28 by a few millimeters downwards. If the pneumatic nailer 10 is placed on 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 control 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 with respect to 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, ie connected to a compressed air connection (not shown) and is 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 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 shut off and a connection is established between the main control line 110 and a ventilation opening (not shown).
  • 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 from the housing interior 64 into the working cylinder 54 above the working piston 52 and drives the working piston 52 afterwards below.
  • the driving ram 50 connected to the working piston 52 drives a fastening means.
  • a triggering device As overview in Figure 1 recognizable, is located below the pilot valve 58 is a triggering device with a triggering valve 22, a safety control valve 16 and a trigger 14. Details of the triggering device are based on the Figures 3 to 7 explained in more detail.
  • the trigger 14 is mounted pivotably about a pivot axis 18 in a position on the housing of the pneumatic nailer 10 that is easy to grip.
  • the trigger 14 has a button 20 which, when the trigger 14 is actuated, displaces a valve pin 32 of the safety control valve 16 upwards. This activation of the safety control valve 16 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 34 through which a guide pin 36 is passed.
  • the attachment sensor 24 is actuated, 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 38 with it, the fixed end of which is hinged about a pivot axis 40 in the interior of the trigger 14 and near its free end.
  • the rocker 38 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, displaces a valve pin 42 of the trigger valve 22 upwards and thus controls the trigger valve 22.
  • the release valve 22 has a valve sleeve 44 in which the valve pin 42 is guided.
  • the valve sleeve 44 for its part, is guided in a fixed manner relative to the handle 12 arranged outer sleeve 60.
  • the valve sleeve 44 is in a release position relative to the outer sleeve 60. In this release position, which corresponds to an initial state of the pneumatic nailer 10, the valve sleeve 44 is held by the pressure in a safety control chamber 62 which is ventilated when the safety control valve 16 is not actuated.
  • the force exerted on the valve sleeve 44 by the pressure in the safety control chamber 62 is greater than a counterforce exerted on the valve sleeve 44 by the pressure in a counterpressure chamber 66.
  • the counter-pressure chamber 66 is always connected to the housing interior 64 via a connection (not shown) and is therefore always ventilated when the compressed air nailer 10 is connected to a compressed air supply.
  • the counter-pressure chamber 66 surrounds a lower region of the valve sleeve 44 in an annular manner. It is delimited by an upper seal 74 and a lower seal 76, which create a seal relative to the valve sleeve 44, the upper seal 74 and lower seal 76 being spaced apart from one another in the axial direction and in the radial direction.
  • the upper seal 74 is an O-ring which is inserted into a circumferential groove in the valve sleeve 44 and rests against the inside of the outer sleeve 60.
  • the lower seal 76 is an O-ring inserted into a circumferential groove of a sealing disk 84 inserted into a valve block 68 and resting against the outside of the valve sleeve 44.
  • the counter-pressure chamber 66 comprises a free space between the closure disk 84 and the outer sleeve 60.
  • two further seals 148 and 150 ensure a seal between the counter-pressure chamber 66 and the housing 68, in which the outer sleeve 60 and the closure disk 84 are inserted.
  • the safety control chamber 62 also has an annular space which is delimited by an upper seal 78 and a lower seal 80. These two seals 78, 80 are also spaced apart from one another in the radial and axial directions and are arranged between the valve sleeve 44 and the outer sleeve 60.
  • the safety control chamber 62 is in the outer sleeve via an axial bore 152 60, an annular gap 154 and a bore 156 in the housing 68 are connected to a throttle 86 through which a small air flow constantly escapes when the safety control chamber 62 is ventilated.
  • valve pin 42 is in a non-actuated position relative to the valve sleeve 44, in which an upper O-ring 128 arranged on the valve pin 42 is in a seal and a lower O-ring 130 arranged on the valve pin 42 is not in poetry.
  • the control line 82 is therefore connected to outside air via a radial bore 132 in the outer sleeve 60, a radial bore 134 in the valve sleeve 44 and an annular gap 108 between the valve pin 42 and the valve sleeve 44.
  • the valve sleeve 44 has a further radial bore 144 which is closed by an O-ring 146 arranged in a groove surrounding the valve sleeve 44 on the outside. This arrangement with the O-ring 146 forms a check valve via which the safety control chamber 62 can be ventilated by the release valve 22.
  • FIG Figure 5 The arrangement shown and the following happens:
  • the attachment sensor 24 is actuated and the force transmission element 30 of the attachment sensor 24 takes the free end of the rocker 38 with it on its way up, so that the button 40 formed on the top of the rocker 38 moves into its switching position, which is always arranged in the same position relative to the outer sleeve 60 and is always set when both the trigger 14 and the contact sensor 24 are actuated.
  • the valve pin 42 of the release valve 22 is displaced relative to the valve sleeve 44 into its actuated position.
  • the lower O-ring 130 comes into the seal and the upper O-ring 128 moves out of the seal.
  • the pressure in the safety control chamber 62 is refreshed by the air flowing past the upper O-ring 128 through the check valve formed by the further radial bore 144 and the O-ring 146.

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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 pneumatique (10) comprenant
    • un piston de travail (52), relié à un coulisseau d'enfoncement (50) pour l'enfoncement d'un moyen de fixation et alimenté en air comprimé lors du déclenchement d'une opération d'enfoncement,
    • une soupape de déclenchement (22) qui comprend une douille de soupape (44) et une tige de soupape (42) guidée dans la douille de soupape (44),
    • une conduite de commande (82) qui est ventilée ou purgée par la soupape de déclenchement (22) pour déclencher une opération d'enfoncement lorsque la tige de soupape (42) est déplacée à une position actionnée par rapport à la douille de soupape (44),
    • un déclencheur (14), un capteur de contact (24) ainsi qu'un bouton (40) couplé au déclencheur (14) et/ou au capteur de contact (24) pour l'actionnement de la tige de soupape (42),
    • une douille extérieure (60), dans laquelle la douille de soupape (44) est guidée, la douille de soupape (44) pouvant être déplacée par rapport à la douille extérieure (60) entre une position de déclenchement et une position de verrouillage, en fonction d'une pression dans une chambre de commande de sécurité (62),
    • le bouton (40) étant couplé au déclencheur (14) et/ou au capteur de contact (24), de telle façon qu'il se trouve toujours dans une position de commutation définie de manière fixe par rapport à la douille extérieure (60), lorsque le déclencheur (14) et le capteur de contact (24) sont tous deux déclenchés,
    • le bouton (40) étant disposé dans la position de commutation de telle façon qu'il déplace la tige de soupape (42) à la position actionnée, lorsque la douille de soupape (44) se trouve dans la position de déclenchement, et caractérisé en ce qu'il ne déplace pas la tige de soupape (42) à la position actionnée lorsque la douille de soupape (44) se trouve dans la position de verrouillage.
  2. Cloueuse pneumatique (10) selon la revendication 1, caractérisée en ce que la cloueuse pneumatique (10) présente une soupape de contrôle de sécurité (16) commandée par le déclencheur (14) qui commande une ventilation ou une purge de la chambre de commande de sécurité (62).
  3. Cloueuse pneumatique (10) selon la revendication 1 ou 2, caractérisée en ce qu'une liaison entre la chambre de commande de sécurité (62) et un espace intérieur du boîtier (64) ventilé est coupée par la soupape de contrôle de sécurité (16), lorsque le déclencheur (14) est déclenché.
  4. Cloueuse pneumatique (10) selon l'une des revendications 1 à 3, caractérisée en ce que la chambre de commande de sécurité (62) est reliée à l'air extérieur par l'intermédiaire d'un étranglement (86).
  5. Cloueuse pneumatique (10) selon l'une des revendications 1 à 4, caractérisée en ce que le bouton (40) est conçu sur une bascule (38) qui présente une extrémité fixe et une extrémité libre, l'extrémité fixe étant logée rotative sur le déclencheur (14) et l'extrémité libre étant entraînée par le capteur de contact (24) lors d'un déclenchement du capteur de contact (24).
  6. Cloueuse pneumatique (10) selon l'une des revendications 1 à 4 caractérisée en ce que le bouton (40) est conçu sur le capteur de contact (24) et présente une position fixe par rapport au capteur de contact (24).
  7. Cloueuse pneumatique (10) selon la revendication 6, caractérisée en ce que la soupape de contrôle de sécurité (16) et la soupape de déclenchement (22) sont montées en série.
  8. Cloueuse pneumatique (10) selon l'une des revendications 1 à 7 caractérisée en ce que la chambre de commande de sécurité (62) est ventilée et/ou purgée à l'aide de la soupape de déclenchement (16) et un clapet anti-retour est ventilé et/ou purgé, lorsque la tige de soupape (42) est déplacée à la position actionnée par rapport à la douille de soupape (44).
  9. Cloueuse pneumatique (10) selon la revendication 8, caractérisée en ce que le clapet anti-retour est intégré dans la douille de soupape (44).
  10. Cloueuse pneumatique (10) selon l'une des revendications 1 à 9, caractérisée en ce que la chambre de commande de sécurité (62) présente un espace annulaire qui est délimité par deux joints d'étanchéité (78, 80) placés entre la douille extérieure (60) et la douille de soupape (44) qui sont écartés l'un de l'autre en direction axiale et en direction radiale.
  11. Cloueuse pneumatique (10) selon l'une des revendications 1 à 10, caractérisée en ce que la chambre de contre-pression (66) ventilée en permanence est présente, la pression dans la chambre de contre-pression (66) exerçant une force antagoniste sur la douille de soupape (44) qui est orientée de façon opposée par rapport à la force exercée sur la douille de soupape (44) par la pression dans la chambre de commande de sécurité (62).
  12. Cloueuse pneumatique (10) selon l'une des revendications 1 à 11, caractérisée en ce que la chambre de contre-pression (66) présente un espace annulaire qui est délimité par deux joints d'étanchéité (74, 76) adjacents à la douille de soupape (44) qui sont écartés l'un de l'autre en direction axiale et en direction radiale.
EP18773225.0A 2017-11-01 2018-09-27 Cloueur à air comprimé pourvu d'un système de soupape de sécurité Active EP3703911B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL18773225T PL3703911T3 (pl) 2017-11-01 2018-09-27 Pneumatyczna gwoździarka z zespołem zaworu bezpieczeństwa

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EP17199525.1A EP3479963B1 (fr) 2017-11-01 2017-11-01 Cloueur à air comprimé pourvu d'un système de soupape de sécurité
PCT/EP2018/076332 WO2019086180A1 (fr) 2017-11-01 2018-09-27 Cloueuse pneumatique à ensemble soupape de sécurité

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EP3703911A1 EP3703911A1 (fr) 2020-09-09
EP3703911B1 true EP3703911B1 (fr) 2021-11-24

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EP17199525.1A Active EP3479963B1 (fr) 2017-11-01 2017-11-01 Cloueur à air comprimé pourvu d'un système de soupape de sécurité
EP18773225.0A Active EP3703911B1 (fr) 2017-11-01 2018-09-27 Cloueur à air comprimé pourvu d'un système de soupape de sécurité

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EP (2) EP3479963B1 (fr)
JP (1) JP7322009B2 (fr)
CN (1) CN111278606B (fr)
AU (1) AU2018361393B2 (fr)
BR (1) BR112020007628A2 (fr)
ES (1) ES2904457T3 (fr)
PL (1) PL3703911T3 (fr)
TW (1) TWI765103B (fr)
WO (1) WO2019086180A1 (fr)

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US11491623B2 (en) 2019-10-02 2022-11-08 Illinois Tool Works Inc. Fastener driving tool
US11154972B2 (en) * 2020-01-23 2021-10-26 Samson Power Tool Co., Ltd. Switch device for nail gun

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CN111278606A (zh) 2020-06-12
AU2018361393A1 (en) 2020-05-14
BR112020007628A2 (pt) 2020-09-29
JP7322009B2 (ja) 2023-08-07
RU2020116524A (ru) 2021-12-01
US20200306940A1 (en) 2020-10-01
EP3479963A1 (fr) 2019-05-08
JP2021501060A (ja) 2021-01-14
WO2019086180A1 (fr) 2019-05-09
EP3479963B1 (fr) 2020-12-09
RU2020116524A3 (fr) 2021-12-24
CN111278606B (zh) 2023-07-25
EP3703911A1 (fr) 2020-09-09
ES2904457T3 (es) 2022-04-05
PL3703911T3 (pl) 2022-02-14
TWI765103B (zh) 2022-05-21
AU2018361393B2 (en) 2024-03-28
TW201922432A (zh) 2019-06-16
US11541522B2 (en) 2023-01-03

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