EP2759378B1 - Outil polyvalent pour des éléments de fixation - Google Patents

Outil polyvalent pour des éléments de fixation Download PDF

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Publication number
EP2759378B1
EP2759378B1 EP13152860.6A EP13152860A EP2759378B1 EP 2759378 B1 EP2759378 B1 EP 2759378B1 EP 13152860 A EP13152860 A EP 13152860A EP 2759378 B1 EP2759378 B1 EP 2759378B1
Authority
EP
European Patent Office
Prior art keywords
hammer
fasteners
tool
anvil
limiting member
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
EP13152860.6A
Other languages
German (de)
English (en)
Other versions
EP2759378A1 (fr
Inventor
Hongtao Zhou
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.)
Chevron HK Ltd
Original Assignee
Chevron HK Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Chevron HK Ltd filed Critical Chevron HK Ltd
Priority to EP13152860.6A priority Critical patent/EP2759378B1/fr
Publication of EP2759378A1 publication Critical patent/EP2759378A1/fr
Application granted granted Critical
Publication of EP2759378B1 publication Critical patent/EP2759378B1/fr
Active legal-status Critical Current
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B21/00—Portable power-driven screw or nut setting or loosening tools; Attachments for drilling apparatus serving the same purpose
    • B25B21/02—Portable power-driven screw or nut setting or loosening tools; Attachments for drilling apparatus serving the same purpose with means for imparting impact to screwdriver blade or nut socket
    • B25B21/026—Impact clutches
    • 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
    • B25C1/06—Hand-held nailing tools; Nail feeding devices operated by electric power
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D11/00—Portable percussive tools with electromotor or other motor drive
    • B25D11/06—Means for driving the impulse member
    • B25D11/10—Means for driving the impulse member comprising a cam mechanism
    • B25D11/102—Means for driving the impulse member comprising a cam mechanism the rotating axis of the cam member being coaxial with the axis of the tool
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D16/00—Portable percussive machines with superimposed rotation, the rotational movement of the output shaft of a motor being modified to generate axial impacts on the tool bit
    • B25D16/006—Mode changers; Mechanisms connected thereto
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D2216/00—Details of portable percussive machines with superimposed rotation, the rotational movement of the output shaft of a motor being modified to generate axial impacts on the tool bit
    • B25D2216/0007—Details of percussion or rotation modes
    • B25D2216/0015—Tools having a percussion-only mode
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D2216/00—Details of portable percussive machines with superimposed rotation, the rotational movement of the output shaft of a motor being modified to generate axial impacts on the tool bit
    • B25D2216/0007—Details of percussion or rotation modes
    • B25D2216/0023—Tools having a percussion-and-rotation mode
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D2216/00—Details of portable percussive machines with superimposed rotation, the rotational movement of the output shaft of a motor being modified to generate axial impacts on the tool bit
    • B25D2216/0069—Locking means

Definitions

  • the present invention generally relates to hand-held power tools for fasteners, and more particularly relates to a multi tool for fasteners.
  • some fasteners such as screws, bolts, nails and the like are commonly used.
  • various hand tools or hand-hold power tools are utilized to operate the above fasteners.
  • an electric screwdriver is used to screw up the screws
  • an electric spanner is used to screw up the bolts
  • an electric hammer is used to strike the nails.
  • such tools are generally used to act on only one kind of the fasteners.
  • the electric hammer is only used to strike the nails but not to screw up the screws. Therefore, during the actual operation, it is necessary for the operator to frequently replace the tools to adapt to the different fasteners.
  • DE 10 2011 086 919 A1 , DE 10 2007 014 757 A1 , DE 20 2010 012 933 U1 and GB 2480352 A disclose power tools with different transmission mechanisms.
  • DE 10 2011 086 919 A1 discloses a hand-hold power tool with a mechanism for connecting and disconnecting of a hammer mechanism, for instance of an eccentric striking mechanism, including couplings whose coupling parts are placed in engagement or out of engagement.
  • the use of different fasteners is not disclosed.
  • This invention proposes a multi-tool for fasteners, which can be switched between different operating modes, so that different fasteners, such as screws, bolts, nails and the like, can be operated by only one tool.
  • the technical problem to be solved by the present invention is to provide a multi-tool for fasteners, wherein the output device of the multi-tool can be switched between at least two operating modes, so that different fasteners, such as screws, bolts, nails and the like, can be operated by only one tool.
  • a multi-tool for fastener includes a housing, a power device, a transmission device coupled to the power device mechanically; an output device coupled to the transmission device mechanically and can be switched between at least two operating modes. In a first operating mode, the output device moves in a reciprocation manner without rotation along an axial direction, and in a second operating mode, the output device rotates with an intermittently increased torque along a circumferential direction.
  • the multi-tool more includes a switching device.
  • the switching device includes a limiting member and the limiting member being moveable between a first position and a second position. In the first position, the output device is in the first operating mode, and in the second position, the output device is in the second operating mode.
  • the transmission device includes a hammer having a striking portion at one end thereof.
  • the output device has a hammer anvil having an anvil portion to engage with the striking portion of the hammer.
  • An engaging surface between the striking portion and the anvil portion is configured as one of inclined surface and curved surface.
  • the hammer anvil includes a teeth portion in the circumferential direction
  • the limiting member is an inner gear ring, wherein, in the first position, the limiting member engages with the teeth portion of the hammer anvil, and in the second position, the limiting member disengages from the teeth portion of the hammer anvil.
  • the limiting member is a locking pin. In the first position, the limiting member engages with the locating hole of the hammer anvil, and in the second position, the limiting member disengages from the locating hole of the hammer anvil.
  • the limiting member is a locking ring, and at least a protruding portion is disposed on the inner side of the locking ring. In the first position, the protruding portion of the limiting member engages with the anvil portion of the hammer anvil, and in the second position, the protruding portion of the limiting member disengages from the anvil portion of the hammer anvil.
  • the limiting member is a locking rod having a notch.
  • the notch of the limiting member In the first position, the notch of the limiting member is orientated opposite to the locating surface of the hammer anvil, and in the second position, the notch of the limiting member is orientated towards the locating surface of the hammer anvil.
  • the transmission device has a hammer and a hammer anvil
  • the output device has an output shaft.
  • the hammer has a striking portion at one end thereof.
  • the hammer anvil has an anvil portion which engages with the striking portion of the hammer at one end and a first engaging portion at the other end.
  • the output shaft has a second engaging portion at one end. The first engaging portion can engage with the second engaging portion, and an engaging surface between the first engaging portion and the second engaging portion is configured as one of inclined surface and curved surface.
  • the output shaft is provided with at least one locating surface on the periphery surface, and the limiting member is a locking rod having a notch.
  • the notch of the limiting member In the first position, the notch of the limiting member is orientated opposite to the locating surface of the output shaft, and in the second position, the notch of the limiting member is orientated towards the locating surface of the output shaft.
  • the multi-tool for fasteners further comprises a bias element disposed between the hammer and the hammer anvil to provide a bias pressure along a direction for separating the hammer from the hammer anvil.
  • the transmission device is coaxially connected with the output device.
  • the output device comprises a strike-transmitting portion for transmitting striking force in the first operating mode and a rotation-transmitting portion for transmitting torque in the second operating mode.
  • the output device comprises a hammer anvil; the rotation-transmitting portion is a gripping head disposed on one end of the hammer anvil; and the strike-transmitting portion is a striking accessory connected with the gripping head.
  • the striking accessory comprises a handle portion connected with the gripping head and a striking portion having a stressed end configured to contact the end of the hammer anvil.
  • the output device comprises a hammer anvil; the strike-transmitting portion is a rectangular head disposed on one end of the hammer anvil; and the rotation-transmitting portion is a rotating accessory connected with the rectangular head.
  • the strike-transmitting portion comprises a striking surface and a nail-accommodating mechanism.
  • the striking surface is configured as one of plane surface, inwards-concave surface or outwards-convex surface.
  • the nail-accommodating mechanism comprises a sleeve protruding out from the striking surface.
  • the multi-tool for fasteners further comprising a magnetic element disposed at the periphery of the sleeve.
  • the sleeve is made of non-magnetic conduction materials, and the magnetic element is a magnetic ring.
  • the rotation-transmitting portion comprises a receiving portion for connecting with the fasteners and having a hexagon or square inner peripheral surface.
  • the multi-tool for fasteners can be switched between different operating modes so as to adapt to different fasteners, such as screws, bolts, nails and the like; it can not only avoid the inconvenience caused by continually replacing the tools during the operation so as to enhance the work efficiency of the operator, but also greatly save the costs of the tools by using only one tool to obtain the functions of multiple tools, and then it has notable economic benefit.
  • a multi-tool for fasteners includes a housing 1, a power device (not labeled), a transmission device (not labeled), an output device (not labeled), an on-off device (not labeled) and a switching device (not labeled).
  • the housing 1 is configured in the form of a common hand-hold power tool, such as angle type, gun type or palm type.
  • the power device includes a motor 2 disposed in the housing 1 and a battery portion.
  • the on-off device is disposed on a gripping portion of the housing 1 for operationally controlling the motor 2 to turn on or turn off.
  • the on-off device can be configured as a pushing device linked with the output device, so that the motor 2 can be controlled to turn on by pushing movement.
  • the pushing device can also operationally control the rotating speed of the motor 2 via the force exerted by pushing movement. If the force is larger, the rotating speed of the motor may be enhanced or the torque force may be increased, and if the force is smaller, the rotating speed of the motor may be reduced or the torque force may be decreased.
  • the power device is connected with the transmission device and provides a first rotation torque to the transmission device.
  • the transmission device includes a first rotating shaft 3, a second rotating shaft 4 and a hammer 5.
  • the first rotating shaft 3 is provided with a pinion 301 and a small bevel gear 302 at two ends thereof, respectively, and the pinion 301 is engaged with a pivot gear 201 on a pivot shaft of the motor.
  • the second rotating shaft 4 is provided with a large bevel gear 402 at one end thereof, and the large bevel gear 402 is engaged with the small bevel gear 302 on the first rotating shaft 3.
  • the second rotating shaft 4 is also provided with a first groove 403.
  • the hammer 5 is provided with a striking portion 504 at one end thereof and a second groove 503 on the inner side thereof.
  • the hammer 5 can be made of one kind of the material or more than one kind of materials with different rigidities. If the hammer 5 is made of two materials with different rigidities, one of the materials is preferably a soft material.
  • the hammer 5 is mounted around the second rotating shaft 4 and connected therewith by a ball 6 which is received between the first groove 403 and the second groove 503.
  • a spring 7 is disposed between the hammer 5 and the large bevel gear 402 so as to provide a bias pressure along the hammer in the direction away from the large bevel gear 402.
  • the spring 7 can alternatively be replaced by a pair of magnetic rings which repels one another.
  • the transmission principle is that: the pivot shaft of the motor drives the first rotating shaft 3 to rotate via the engagement between the gears, the first rotating shaft 3 drives the second rotating shaft 4 to rotate via the engagement between the bevel gears, and the second rotating shaft drives the hammer 5 to rotate via the ball 6.
  • the hammer 5 rotates with resistance, due to the movement of the ball 6 along the groove, the hammer 5 will move a distance towards the large bevel gear 402 against the bias pressure of the spring 7, and then rotatably move to the initial position under the action of the bias pressure of the spring 7.
  • the hammer 5 With the resistance in the rotation direction, the hammer 5 can rotatably and axially move in a reciprocation manner on the second rotating shaft 4, thereby generating an intermittently increased torque.
  • the transmission device can alternatively be configured to not comprise the first rotating shaft 3, that is, the pivot shaft of the motor can directly drive the second rotating shaft 4 to rotate via the engagement between the gears.
  • the transmission device is coaxially connected with the output device and provides a second rotation torque and a bias force to the output device.
  • the output device is connected with a tool head to act on the fasteners.
  • the output device can be a 1/4" gripper or automatic one-handed gripper. Further, the output device can also comprise an additional rotating head.
  • the output device of the tool for fasteners includes a hammer anvil 8 which includes an anvil portion 804 to engage with the striking portion 504 of the hammer, wherein the engaging surface between the striking portion 504 and the anvil portion 804 is configured as inclined surface or curved surface.
  • the engaging surface can be configured to have a positive engaging surface and a negative engaging surface, wherein the two engaging surfaces can be symmetrically disposed with the same inclined angle or asymmetrically disposed with different inclined angles, and also can be configured in such way that one of them is an inclined surface and the other is a vertical surface.
  • the striking portion 504 and the anvil portion 804 comprise at least two pairs, so as to provide at least two contacting positions for striking when the hammer 5 and the hammer anvil 8 are operated for striking, namely, the hammer anvil 8 can have more than two pressured positions. As a result, it can effectively reduce the striking pressure to enhance the tool lifetime.
  • the contacting positions of the striking portion 504 and the anvil portion 804 can be made of the hard materials so as to enhance the energy transmission efficiency between the hammer and the hammer anvil and prolong the service lifetime of the members.
  • the hard materials comprise hard alloy.
  • the transmission principle is that: the rotating movement of the hammer 5 is divided into the rotation torque in the circumferential direction and the bias force in the axial direction by the inclined surface or curved surface.
  • the hammer anvil 8 receives the rotation torque in the circumferential direction so as to rotatably move with an intermittently increased torque, and the hammer anvil 8 receives the bias force in the axial direction, it can move in a reciprocation manner in the axial direction under the action of the pushing movement of the operator.
  • the switching device includes an operating member and a limiting member, and the operator can control the limiting member to move between a first position and a second position by operating the operating member.
  • the operating member is disposed in a range on the housing at which the hand of the operator can touch the operating member upon gripping the tool for fasteners; hence, the operator can switch the operating modes of the tool for fasteners by one-handed control.
  • the limiting member acts on the output device so that the output device is in a first operating mode.
  • the limiting member can limit the rotation of the output device in the circumferential direction, and with the pushing movement of the operator, the output device can move in a reciprocation manner without rotation in the axial direction.
  • the limiting member In the second position, the limiting member disengages from the output device so that the output device is in a second operating mode. At this time, the circumferential limiting function of the limiting member is released and the output device can simultaneously move in a reciprocation manner and rotate with an intermittently increased torque in the axial direction.
  • the hammer anvil 8 of the output device is provided with a teeth portion 805 in the circumferential direction
  • the limiting member is an inner gear ring 9.
  • the inner gear ring 9 engages with the teeth portion 805 of the hammer anvil 8 to limit the rotation of the hammer anvil 8 in the circumferential direction, so that the hammer anvil 8 can move in a reciprocation manner without rotation in the axial direction under the action of the pushing movement of the operator.
  • the inner gear ring 9 disengages from the teeth portion 805 of the hammer anvil 8, and the circumferential limiting function of the hammer anvil 8 is released, so that the hammer anvil 8 can simultaneously move in a reciprocation manner and rotate with an intermittently increased torque in the axial direction.
  • the hammer anvil 8 of the output device is provided with a locating hole 806, and the limiting member is a locking pin 10.
  • the locking pin 10 engages with the locating hole 806 of the hammer anvil 8 to limit the rotation of the hammer anvil 8 in the circumferential direction, so that the hammer anvil 8 can move in a reciprocation manner without rotation in the axial direction under the action of the pushing movement of the operator.
  • the locking pin 10 disengages from the locating hole 806 of the hammer anvil 8, and the circumferential limiting function of the hammer anvil 8 is released, so that the hammer anvil 8 can simultaneously move in a reciprocation manner and rotate with an intermittently increased torque in the axial direction.
  • the limiting member is a locking ring 11, and a protruding portion 1104 is disposed on the inner side of the locking ring 11.
  • the locking ring 11 In the first position, the locking ring 11 is mounted around the hammer anvil 8 and the protruding portion 1104 of the locking ring 11 is engaged with the anvil portion 804 of the hammer anvil 8 to limit the rotation of the hammer anvil 8 in the circumferential direction, so that the hammer anvil 8 can move in a reciprocation manner without rotation in the axial direction under the action of the pushing movement of the operator.
  • the locking ring 11 disengages from the hammer anvil 8, and the circumferential limiting function of the hammer anvil 8 is released, so that the hammer anvil 8 can simultaneously move in a reciprocation manner and rotate with an intermittently increased torque in the axial direction.
  • the periphery of the front end of the hammer anvil 8 is provided with at least one locating surface 806, and the limiting member is a locking rod 12 having a notch 1206.
  • the notch 1206 of the locking rod 12 is orientated opposite to the locating surface 806 on the periphery of the front end of the hammer anvil 8, and then the locking rod 12 can limit the rotation of the hammer anvil 8 in the circumferential direction, so that the hammer anvil 8 can move in a reciprocation manner without rotation in the axial direction under the action of the pushing movement of the operator.
  • the notch 1206 of the locking rod 12 is orientated towards the locating surface 806 on the periphery of the front end of the hammer anvil 8, thus the hammer anvil 8 can simultaneously move in a reciprocation manner and rotate with an intermittently increased torque in the axial direction in the notch 1206 of the locking rod 12.
  • a multi-tool for fasteners has a changed transmission device and a changed output device on the basis of the first embodiment.
  • the transmission device includes a hammer anvil 8 and the output device is an output shaft 13.
  • the hammer anvil 8 has a first engaging portion 807 at the other end thereof.
  • the output shaft 13 is connected with a tool head at one end and has a second engaging portion 1307 at the other end for engaging with the first engaging portion 807 of the hammer anvil 8, wherein the engaging surface therebetween is configured as inclined surface or curved surface.
  • the engaging surface between the first engaging portion 807 and second engaging portion 1307 can be configured to have a positive engaging surface and a negative engaging surface, wherein the two engaging surfaces can be symmetrically disposed with the same inclined angle or asymmetrically disposed with the different inclined angles, and also can be configured in such way that one of them is an inclined surface and the other is a vertical surface.
  • the transmission principle is that: the rotating movement of the hammer anvil 8 is divided into the rotation torque in the circumferential direction and the bias force in the axial direction by the inclined surface or curved surface.
  • the output shaft 13 receives the rotation torque in the circumferential direction so as to rotatably move with an intermittently increased torque.
  • the output shaft 13 receives the bias force in the axial direction, thus it can move in a reciprocation manner in the axial direction under the action of the pushing movement of the operator.
  • the periphery of the output shaft 13 is provided with at least one locating surface 1306, and the limiting member is a locking rod 12 having a notch 1206.
  • the notch 1206 of the locking rod 12 is orientated opposite to the locating surface 1306 on the periphery of the output shaft 13, and then the locking rod 12 can limit the rotation of the output shaft 13 in the circumferential direction, so that the output shaft 13 can move in a reciprocation manner without rotation in the axial direction under the action of the pushing movement of the operator.
  • the notch 1206 of the locking rod 12 is orientated towards the locating surface 1306 on the periphery of the output shaft 13, thus the output shaft 13 can simultaneously move in a reciprocation manner and rotate with an intermittently increased torque in the axial direction in the notch 1206 of the locking rod 12.
  • the output device in the tool for fasteners according to the first embodiment or the second embodiment, includes a strike-transmitting portion for transmitting striking force to the fasteners such as nails and a rotation-transmitting portion for transmitting torque to the fasteners such as screws.
  • the portion of the strike-transmitting portion which acts on the fasteners is defined as a striking portion, and the striking portion includes a striking surface which is configured as one of plane surface, concave surface or convex surface.
  • the striking portion can be provided with an additional nail-support mechanism on the periphery thereof.
  • the nail-support mechanism includes a sleeve, an elastic element and a stopper element.
  • the elastic element is disposed between the sleeve and the striking portion and is preferably configured as a spring so as to provide a bias pressure to the sleeve in the axial direction.
  • the stopper element is disposed on the periphery of the striking portion to provide a resistance to the sleeve in a direction opposite to the direction of the bias pressure of the elastic element. Under the action of the bias pressure of the elastic element and the resistance of the stopper element, the sleeve can be retained in a position at which the sleeve protrudes from the striking surface for a distance. Preferably, the distance is slightly greater than the axial dimension of the cap of the fastener such as nails.
  • the operating principle of the nail-support mechanism is that: during the striking operation, the fastener is limited in a range defined by the sleeve and the striking surface, so as to avoid the fastener sliding out from the striking surface to cause the mistaken striking, which can effectively enhance not only the stability but also the safety of the striking operation.
  • the cap of the fastener gets close to the operating surface, the operating surface may abut against the sleeve to make it move backwards against the elastic bias pressure under the action of the pushing movement of the operator, so that the affect on the striking operation can be avoided.
  • a magnetic element can be additionally disposed at the periphery of the sleeve to provide attracting force to the fastener, which is helpful for the nail-support mechanism to retain the stability of the fastener during the operation.
  • the magnetic element is a magnetic ring and the sleeve is made of non-magnetic conduction materials.
  • the rotation-transmitting portion of the output device is configured as a gripping element 14 disposed on the end of the hammer anvil, and the strike-transmitting portion is configured as a striking accessory 15 connected with the gripping element 14.
  • the gripping element 14 is located at the output end of the hammer anvil 8 and includes a receiving portion 1401 and a casing 1402.
  • the receiving portion 1401 has a hexagon circumferential surface and is disposed in the output end of the hammer anvil 8, wherein the circumferential surface is provided with two holes 1403 which respectively has a diameter gradually increased from the inside to the outside.
  • the periphery of the receiving portion 1401 is mated with the casing 1402, and a convex portion 1404 and a concave portion 1405 are disposed adjacent one another in the inside of the casing 1402.
  • a spring 1406 is disposed between the receiving portion 1401 and the casing 1402 to provide a bias pressure along the direction of the end of the hammer anvil.
  • the receiving portion 1401 is also provided with a stopper element 1407 at the periphery thereof.
  • the stopper element 1407 provides a resistance in a direction opposite to the direction of the bias pressure of the spring.
  • the casing 1402 Under the action of the bias pressure of the spring 1406 and the resistance of the stopper element 1407, the casing 1402 can be retained in a position at which the convex portion 1404 may face to the hole 1403.
  • a locking element 1408 is disposed between the convex portion 1404 and the hole 1403, and a portion of the locking element 1408 can pass through the hole to enter into the receiving portion 1401.
  • the locking element 1408 is a steel ball.
  • the striking accessory 15 is removably connected with the gripping element 14 and includes a handle portion 1501 and a striking portion 1502.
  • the outer circumferential surface of the handle portion 1501 is configured as hexagon surface to fit with the inner circumferential surface 1401 of the receiving portion of the gripping element 14.
  • the striking portion 1502 has a stressed end 1503 configured to contact the end of the output end of the hammer anvil 8 to receive the axial striking force transmitted from the hammer anvil 8 and a striking surface 1504 located at the other surface opposite to the stressed end to contact the fastener.
  • the nail-support mechanism 16 is disposed at the periphery of the striking accessory 15 and includes a sleeve 1601, a spring 1602 and a stopper flange 1603, and a magnetic ring 1604 is disposed at the periphery of the sleeve 1601.
  • Fig. 8-A and Fig. 8-B which illustrate the states of the nail-support mechanism 16 at the beginning and ending stages of the striking operation.
  • the nail-support mechanism 16 is in a state as shown in Fig. 8-A , wherein the sleeve 1601 protrudes from the striking surface 1504 for a distance.
  • the nail-support mechanism 16 is in a state as shown in Fig. 8-B , wherein the sleeve 1601 gradually moves backwards against the bias pressure of the spring 1602 and finally moves to a position flush with the striking surface 1504.
  • the striking accessory 15 when the striking operation is required for striking the fasteners such as nails, the striking accessory 15 may be connected with the gripping element 14 and the operating member of the switching device is pushed to a hammer mode.
  • the striking accessory 15 when the rotating operation is required for rotating the fasteners such as screws, the striking accessory 15 may be replaced by a tool head matched with the fastener and the operating member of the switching device is pushed to a rotation mode.
  • the strike-transmitting portion of the output device is configured as a rectangular head 17 disposed on the end of the hammer anvil, and the rotation-transmitting portion is configured as a rotating accessory 18 connected with the rectangular head 17.
  • the rectangular head portion is the striking portion, and the end surface 1701 of the rectangular head is the striking surface.
  • the rectangular head is provided with a receiving hole 1702 in which a locking element 1703 is located.
  • a spring 1704 is disposed between the receiving hole 1702 and the locking element 1703.
  • the locking element 1703 is a steel ball.
  • the locking element 1703 is disposed in the receiving hole 1702 against the bias pressure of the spring 1704 and a portion of the locking element 1703 protrudes from the receiving hole 1702.
  • the nail-support mechanism 16 can be additionally disposed on the rectangular head.
  • the sleeve 1601 of the nail-support mechanism is provided with at least one recess 1605 on the inner side thereof, and the recess 1605 can be mated with the locking element 1703 which partially protrudes from the receiving hole 1702.
  • the magnetic ring 1604 is disposed at the periphery of the sleeve 1601.
  • One end of the sleeve 1601 is connected with the hammer anvil 8 via the spring 1602, and the spring 1602 provides a bias pressure to the sleeve 1601 along the direction of the end surface 1701 of the rectangular head.
  • the sleeve 1601 Under the action of the bias pressure provided by the spring 1602 and the resistance provided by the locking element 1703, the sleeve 1601 can be retained in a position at which the sleeve protrudes from the end surface 1701 of the rectangular head for a distance.
  • Fig. 11-A and Fig. 11-B which illustrate the states of the nail-support mechanism 16 at the beginning and ending stages of the striking operation.
  • the sleeve 1601 protrudes from the end surface 1701 of the rectangular head for a distance
  • the sleeve 1601 gradually moves backwards against the bias pressure of the spring 1602 and finally moves to a position flush with the end surface 1701 of the rectangular head.
  • the rotating accessory 18 when the rotating operation is required, the rotating accessory 18 may be mounted around the rectangular head 17.
  • the rotating accessory 18 can be regarded as the rotation-transmitting portion herein, and the inner circumferential surface 1801 of the receiving portion of the rotating accessory 18 for mounting around the rectangular head 17 is configured as square so as to mate with the rectangular head 17 and has at least one recess 1802 to mate with the locking element 1703 which partially protrudes from the receiving hole 1702.
  • the portion of the rotating accessory which protrudes from the rectangular head has the same configuration as the above gripping element to receive the handle portion of the tool head for the fasteners such as screws.
  • the nail-support mechanism 16 when the striking operation is required for striking the fasteners such as nails, the nail-support mechanism 16 can be connected to the rectangular head 17 and the operating member of the switching device is pushed to the hammer mode.
  • the nail-support mechanism 16 when the rotating operation is required for rotating the fasteners such as screws, the nail-support mechanism 16 may be replaced by the rotating accessory 18 and the operating member of the switching device is pushed to the rotation mode.
  • the limiting member in the tool for fasteners according to the first embodiment or the second embodiment, includes a circumferential limiting portion and an axial limiting portion.
  • the circumferential limiting portion of the limiting member acts on the output device and the axial limiting member disengages from the output device, then the output device is operated in the first operating mode, the limiting member can limit the rotation of the output device in the circumferential direction and the output device can move in a reciprocation manner without rotation in the axial direction under the action of the pushing movement of the operator.
  • the circumferential limiting portion of the limiting member disengages from the output device and the axial limiting portion acts on the output device, then the output device is operated in the second operating mode, the limiting member limit the movement of the output device along the axial direction and the output device can rotate with an intermittently increased torque in the circumferential direction.
  • the tool for fasteners has five operating modes.
  • the limiting member limits the rotation of the output device in the circumferential direction, and the output device can move in a reciprocation manner without rotation in the axial direction, i.e. the output device is operated in the striking mode.
  • the limiting member limits the movement of the output device in the axial direction, and the output device can rotate with an intermittently increased torque in the circumferential direction, i.e. the output device is operated in the rotating-striking mode.
  • the limiting function of the limiting member to the output device is released, and the output device can simultaneously move in a reciprocation manner in the axial direction and rotate with an intermittently increased torque in the circumferential direction, i.e. the output device is operated in the combinational mode.
  • the limiting member limits the movement of the hammer in the axial direction, and the output device can rotate with constant torque in the circumferential direction and move in a reciprocation manner in the axial direction, i.e. the output device is operated in the striking-rotating mode.
  • the limiting member limits the movement of the hammer in the axial direction and the movement of the output device in the axial direction, and the output device can rotate with constant torque in the circumferential direction, i.e. the output device is operated in the rotating mode. Therefore, the tool for fasteners according to the present invention can be switched between different operating modes by controlling the location of the limiting member, so that the operator can flexibly choose an appropriate operating mode according to the different working conditions.
  • the tool for fasteners discussed in the first and second embodiments includes a bias element disposed between the hammer 5 and the hammer anvil 8 to provide a bias pressure along a direction for separating the hammer 5 from the hammer anvil 8.
  • the function of the bias element is that: the bias element can keep the hammer 5 separating from the hammer anvil 8 before the pushing action of the operator so as to cut the energy transmission between the hammer 5 and the hammer anvil 8, which can not only reduce the energy dissipation during the operation pause, but also effectively prevent the potential safety hazard caused by the accidental activation of the tool.
  • the tool is only activated to be operated in an operating mode under the action of the pushing of the operator.
  • the hammer anvil 8 includes a receiving portion 808 in which the end of the second rotating shaft is located.
  • the spring 14 is disposed between the hammer anvil 8 and the second rotating shaft 4 to provide a bias pressure along a direction for separating the second rotating shaft 4 from the hammer anvil 8, so that the hammer 5 and the hammer anvil 8 can be retained in the disengaged state.
  • the receiving portion can alternatively be disposed on the end of the second rotating shaft 4, and the spring can alternatively be replaced by a pair of magnetic rings which repels each other.
  • the tool for fasteners discussed in the first and second embodiments further includes a LED indicator light on the housing 1 which can be turned on when the motor is started by the on-off device.
  • the LED indicator light can also indicate the capacity of the battery portion in the power device, namely, if the capacity of the battery portion has decreased to a certain value, the operator will be alarmed by the reduced brightness, changed color or flashing of the LED indicator light so as to replace or charge up the battery.
  • the LED indicator light can be disposed in a switch trigger of the on-off device.
  • the visible operating area on the housing 1 can also be provided with a LCD screen to display the torque force values or torque force curved line of the tool for fasteners.
  • the striking frequency of the hammer and the hammer anvil can be controlled by adjusting the rotating speed of the motor via the on-off device. Moreover, it can be provided with different striking frequency modes for various types of the fasteners. The operator can adjust the striking frequency to make the hammer anvil and the fasteners form the resonance, thereby enhancing the striking efficiency. Moreover, the striking manner of the hammer and the hammer anvil can also be controlled by adjusting the rotating speed of the motor via the on-off device, wherein the striking manner includes single-striking manner and continuous-striking manner.
  • the tool for fasteners discussed in the first and second embodiments further includes a regulating device for torque force which can regulate the output device so as to output the constant torque force.
  • the regulating device for torque force further includes a feedback system to modify the output of the torque force from the output device according to the working condition.
  • the tool for fasteners discussed in the first and second embodiments further includes a controlling member.
  • the controlling member can identify the type of the replaced tool head, alarm the operator to choose the corresponding operating mode for the fasteners or control the switching device to automatically switch to the corresponding operating mode.
  • a sensor is provided on respective contacting surfaces, thereby the sensor can generate corresponding sensed signals when different tool heads are installed. The controlling member detects the sensed signals and determines the relevant operating mode to alarm the operator or automatically switch the operating mode.
  • a portion of the housing which envelopes the transmission device and the output device is defined as operating portion, and a portion of the housing which envelopes the motor and the battery portion is defined as body portion.
  • a shock mitigation system is disposed in the part of the housing between the operating portion and the body portion.
  • this part of housing is made of soft material, thus it can effectively enhance the comfort level for gripping of the operator.
  • the on-off device can be disposed at several positions to meet the requirements of various working conditions, for example, the on-off device can be disposed at the operating portion, the gripping position and the tail potion on the body portion.
  • the tool for fasteners according to the present invention When the tool for fasteners according to the present invention is operated, if the fasteners are nails, the tool can be switched to the first operating mode by adjusting the switching device, and the output device of the tool may be pressed on the cap of the nail, then the on-off device is turned on, and the output device of the tool strikes in a reciprocation manner. If the fasteners are screws or bolts, the tool can be switched to the second operating mode by adjusting the switching device, and the output device of the tool may be mated with the screws or bolts, then the on-off device is turned on, and the output device of the tool rotates with an intermittently increased torque.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Percussive Tools And Related Accessories (AREA)

Claims (14)

  1. Outil multifonctions pour moyens de fixation, comprenant
    un boîtier (1) ;
    un dispositif d'alimentation en énergie ;
    un dispositif de transmission couplé mécaniquement au dispositif d'alimentation en énergie ;
    un dispositif de sortie couplé mécaniquement au dispositif de transmission et pouvant être commuté entre au moins deux modes de fonctionnement, dans lequel, dans un premier mode de fonctionnement, le dispositif de sortie se déplace en mouvement de va-et-vient sans rotation le long d'une direction axiale, et dans un deuxième mode de fonctionnement, le dispositif de sortie tourne avec un couple de rotation accru par intermittence le long d'une direction circonférentielle ; et
    un dispositif de commutation comprenant un élément de limitation et l'élément de limitation pouvant être déplacé entre une première position et une deuxième position, dans lequel, à la première position, le dispositif de sortie est dans le premier mode de fonctionnement, et à la deuxième position, le dispositif de sortie est dans le deuxième mode de fonctionnement ;
    caractérisé en ce que
    le dispositif de transmission comprend un marteau (5) présentant une partie de frappe (504) à une extrémité de ce dernier, et le dispositif de sortie présente une enclume de marteau (8) présentant une partie enclume (804) destinée à être en prise avec la partie de frappe (504) du marteau (5), une surface de prise entre la partie de frappe (504) et la partie enclume (804) est configurée comme surface inclinée et surface courbée.
  2. Outil multifonctions pour moyens de fixation selon la revendication 1, dans lequel l'enclume de marteau (8) comprend une partie dentée (805) dans le sens circonférentiel, et l'élément de limitation est une couronne dentée intérieure (9), à la première position, l'élément de limitation se met en prise avec la partie dentée (805) de l'enclume de marteau (8), et à la deuxième position, l'élément de limitation se découple de la partie dentée (805) de l'enclume de marteau (8).
  3. Outil multifonctions pour moyens de fixation selon la revendication 1, dans lequel un trou de logement (806) est défini dans l'enclume de marteau (8), et l'élément de limitation est une broche de sécurité (10), dans lequel, à la première position, l'élément de limitation se met en prise avec le trou de logement (806) de l'enclume de marteau (8), et à la deuxième position, l'élément de limitation se découple du trou de logement (806) de l'enclume de marteau (8).
  4. Outil multifonctions pour moyens de fixation selon la revendication 1, dans lequel l'élément de limitation est un anneau de verrouillage (11), et au moins une partie protubérante (1104) est disposée sur la face intérieure de l'anneau de verrouillage (11), dans lequel, à la première position, la partie protubérante (1104) de l'élément de limitation se met en prise avec la partie enclume (804) de l'enclume de marteau (8), et à la deuxième position, la partie protubérante (1104) de l'élément de limitation se découple de la partie enclume (804) de l'enclume de marteau (8).
  5. Outil multifonctions pour moyens de fixation selon la revendication 1, dans lequel au moins une surface de logement est définie sur la surface périphérique de l'enclume de marteau (8), et l'élément de limitation est une tige de verrouillage (12) présentant une entaille (1206), dans lequel, à la première position, l'entaille (1206) de l'élément de limitation est orientée à l'opposé de la surface de logement de l'enclume de marteau (8), et à la deuxième position, l'entaille (1206) de l'élément de limitation est orientée vers la surface de logement de l'enclume de marteau (8).
  6. Outil multifonctions pour moyens de fixation selon la revendication 1, dans lequel le dispositif de transmission présente un marteau (5), le dispositif de sortie présente une enclume de marteau (8) et un arbre de sortie, dans lequel le marteau présente une partie de frappe (1502) à une extrémité de ce dernier; l'enclume de marteau (8) présente une partie enclume qui se met en prise avec la partie de frappe (1502) du marteau (5) à une extrémité et une première partie de prise (807) à l'autre extrémité ; l'arbre de sortie présente une deuxième partie de prise (1307) à une extrémité ; dans lequel la première partie de prise (807) peut se mettre en prise avec la deuxième partie de prise (1307), et une surface de prise entre la première partie de prise (807) et la deuxième partie de prise (1307) est configurée comme surface inclinée et surface courbée.
  7. Outil multifonctions pour moyens de fixation selon la revendication 6, dans lequel l'arbre de sortie comporte au moins une surface de logement (806) sur la surface périphérique, et l'élément de limitation est une tige de verrouillage (12) présentant une entaille (1206), dans lequel, à la première position, l'entaille (1206) de l'élément de limitation est orientée à l'opposé de la surface de logement (806) de l'arbre de sortie, et à la deuxième position, l'entaille (1206) de l'élément de limitation est orientée vers la surface de logement (806) de l'arbre de sortie.
  8. Outil multifonctions pour moyens de fixation selon la revendication 1, comprenant en outre un élément de rappel disposé entre le marteau (5) et l'enclume de marteau (8) pour fournir une pression de sollicitation le long d'une direction pour la séparation du marteau (5) de l'enclume de marteau (8).
  9. Outil multifonctions pour moyens de fixation selon la revendication 1, dans lequel le dispositif de transmission est raccordé coaxialement au dispositif de sortie.
  10. Outil multifonctions pour moyens de fixation selon la revendication 1, dans lequel, le dispositif de sortie comprend une partie de transmission de frappe pour la transmission de la force de frappe dans le premier mode de fonctionnement et une partie de transmission de rotation pour la transmission du couple de rotation dans le deuxième mode de fonctionnement.
  11. Outil multifonctions pour moyens de fixation selon la revendication 10, dans lequel le dispositif de sortie comprend une enclume de marteau (8) ; la partie de transmission de rotation est une tête de préhension disposée sur une extrémité de l'enclume de marteau (8) ; et la partie de transmission de frappe est un accessoire de frappe (15) raccordé à la tête de préhension.
  12. Outil multifonctions pour moyens de fixation selon la revendication 11, dans lequel l'accessoire de frappe comprend une partie en poignée de transport (1501) raccordée à la tête de préhension et une partie de frappe (1502) présentant une extrémité sollicitée configurée pour être en contact avec l'extrémité de l'enclume de marteau (8).
  13. Outil multifonctions pour moyens de fixation selon la revendication 10, dans lequel le dispositif de sortie comprend une enclume de marteau (8) ;
    la partie de transmission de frappe est une tête rectangulaire (17) disposée sur une extrémité de l'enclume de marteau (8) ; et
    la partie de transmission de rotation est un accessoire rotatif (18) raccordé à la tête rectangulaire (17).
  14. Outil multifonctions pour moyens de fixation selon la revendication 10, dans lequel la partie de transmission de frappe comprend une surface de frappe (1504) et un mécanisme de logement de clous.
EP13152860.6A 2013-01-28 2013-01-28 Outil polyvalent pour des éléments de fixation Active EP2759378B1 (fr)

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Application Number Priority Date Filing Date Title
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EP2759378B1 true EP2759378B1 (fr) 2015-11-04

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105436610A (zh) * 2015-12-26 2016-03-30 宁波鑫晟工具有限公司 一种防误操作的往复锯

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104308812B (zh) * 2014-10-14 2016-02-03 张家港市创基机械设备制造有限公司 用于电锤的冲击头
US20220055120A1 (en) * 2018-06-06 2022-02-24 Positec Power Tools (Suzhou) Co., Ltd Hand-held power tool

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007014757A1 (de) * 2007-03-28 2008-10-02 Robert Bosch Gmbh Drehschlagwerk
FR2952571B3 (fr) * 2009-11-19 2011-12-09 Chervon Ltd Marteau automatique
CN101856811B (zh) * 2010-05-11 2013-01-30 南京德朔实业有限公司 便携式角冲击工具
DE102011086919A1 (de) * 2010-12-15 2012-06-21 Robert Bosch Gmbh Elektrohandwerkzeugmaschine

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105436610A (zh) * 2015-12-26 2016-03-30 宁波鑫晟工具有限公司 一种防误操作的往复锯
CN105436610B (zh) * 2015-12-26 2017-12-08 宁波鑫晟工具有限公司 一种防误操作的往复锯

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