EP4112230A1 - Marteau de sécurité - Google Patents

Marteau de sécurité Download PDF

Info

Publication number
EP4112230A1
EP4112230A1 EP21182383.6A EP21182383A EP4112230A1 EP 4112230 A1 EP4112230 A1 EP 4112230A1 EP 21182383 A EP21182383 A EP 21182383A EP 4112230 A1 EP4112230 A1 EP 4112230A1
Authority
EP
European Patent Office
Prior art keywords
hammer
guide device
hammer head
head
tool
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.)
Pending
Application number
EP21182383.6A
Other languages
German (de)
English (en)
Inventor
Daniel Münzer
Jürgen Küchemann
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.)
Airbus Operations GmbH
Original Assignee
Airbus Operations GmbH
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 Airbus Operations GmbH filed Critical Airbus Operations GmbH
Priority to EP21182383.6A priority Critical patent/EP4112230A1/fr
Publication of EP4112230A1 publication Critical patent/EP4112230A1/fr
Pending legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D1/00—Hand hammers; Hammer heads of special shape or materials
    • B25D1/16—Hand hammers; Hammer heads of special shape or materials having the impacting head in the form of a sleeve slidable on a shaft, e.g. hammers for driving a valve or draw-off tube into a barrel

Definitions

  • the invention relates to a safety hammer which can basically be used for all purposes for which a conventional hammer can also be used, but which is particularly suitable for use in aircraft assembly.
  • the invention is directed to the object of providing a safety hammer with which a user can hit a desired target more easily than with a conventional hammer.
  • a safety hammer includes a guide device and a hammer head with an impact face.
  • the striking surface of the hammer head serves to transmit a striking force applied by the user of the safety hammer to an object, such as a tool, or a fastener to be driven in, such as a nail.
  • the striking surface preferably extends essentially perpendicular to a longitudinal axis of the hammer head.
  • the hammer head is connected to the guide device in a displaceable manner along a longitudinal axis of the guide device.
  • the longitudinal axis of the guide device preferably extends essentially parallel to the longitudinal axis of the hammer head.
  • the safety hammer includes a hammer handle pivotally attached to the hammer head.
  • the hammer head can be moved both relative to the guide device and relative to the hammer handle.
  • a swinging motion or a striking motion performed by a user who grips the safety hammer by the hammer shaft similar to a conventional hammer, can be converted into a translatory motion of the hammer head along the longitudinal axis of the guide device.
  • this ensures that the hammer head always moves along the longitudinal axis of the guide device.
  • the safety hammer makes it easier to hit a desired target target. Injuries to the user and the associated loss of work can be avoided as a result.
  • objects to be processed by the safety hammer are protected from damage caused by misplaced hammer blows, so that no parts have to be repaired or replaced.
  • the hammer shank may be pivotable relative to the hammer head between a first and second position.
  • the hammer shank In the first position, the hammer shank preferably defines an acute angle with a portion of the hammer head adjacent to the striking surface and facing the hammer shank, i. H. an angle of less than 90°, in particular an angle of approximately 50 to 70°.
  • the hammer shank is preferably arranged in the first position relative to the hammer head when a user grips the safety hammer on the hammer shank, similar to a conventional hammer, and has completed a maximum rebound movement preceding a striking movement.
  • the hammer shank In the second position, the hammer shank preferably defines an obtuse angle with a portion of the hammer head adjacent to the striking face and facing the hammer shank, i. H. an angle greater than 90°, in particular an angle of approximately 120 to 130°.
  • the hammer shank is preferably arranged in the second position relative to the hammer head when a user grips the safety hammer by the hammer shank, similar to a conventional hammer, and has completed a maximum striking movement.
  • pivotal movement of the shank relative to the hammer head need not be limited to movement between the first and second positions.
  • the hammer shank can be pivoted in an angular range of approximately 0 to 180° relative to the hammer head, so that the hammer shank can form any desired angle in this angular range with a section of the hammer head adjacent to the striking surface and facing the hammer shank.
  • the hammer handle can also be pivoted relative to the hammer head in such a way that the hammer handle extends essentially parallel to the longitudinal axis of the guide device. The safety hammer can then be stowed away to save space.
  • the hammer head is preferably displaceable relative to the guide device between a first position and a second position. In the first position, the hammer head is preferably adjacent a first end of the guide means arranged. The hammer head is arranged in the first position relative to the guide device, in particular when a user grips the safety hammer by the hammer shaft, similar to a conventional hammer, and has completed a maximum rebound movement preceding a striking movement.
  • the hammer head In its second position, on the other hand, the hammer head is preferably arranged adjacent to a second end of the guide device that is opposite the first end.
  • the hammer head is arranged in the second position relative to the guide device in particular when a user grips the safety hammer by the hammer shaft, similar to a conventional hammer, and has completed a maximum striking movement.
  • a rebound movement performed by a user who grips the hammer by the hammer handle can be converted into a pivoting movement of the hammer handle relative to the hammer head in the direction of the first position on the one hand and a translatory movement of the hammer head relative to the first position on the other hand Guide device are implemented in the direction of the first position.
  • the hammer handle can be arranged in its first position relative to the hammer head and the hammer head can also be arranged in its first position relative to the guide device.
  • a striking movement performed by the user can, however, be converted into a pivoting movement of the hammer handle relative to the hammer head in the direction of the second position and also a translatory movement of the hammer head relative to the guide device in the direction of the second position.
  • the hammer shank can be arranged in its second position relative to the hammer head and the hammer head can also be arranged in its second position relative to the guide device.
  • the first position of the hammer handle relative to the hammer head and the first position of the hammer head relative to the guide device thus each define an end position that is reached by a maximum rebound movement by the user.
  • the second position of the hammer shank relative to the hammer head and the second position of the hammer head relative to the guide device each define an end position that is reached by a maximum impact movement of the user.
  • the user of the safety hammer however, its swinging movement can also be metered in such a way that the hammer shank and/or the hammer head has/have not reached its/their first position at the end of the swinging movement, but has only been moved in the direction of the first position during the swinging movement. This can be useful, for example, if the maximum impact force of the hammer is not desired or required.
  • the hammer head can be connected to the guide device in any desired manner, as long as the hammer head can be displaced along the longitudinal axis of the guide device.
  • the guide device preferably passes through a bore formed in the hammer head.
  • the longitudinal axis of the guide device runs coaxially to a longitudinal axis of the hammer head.
  • the guide device can be designed, for example, in the form of a shaft or a rod.
  • the guide device can be made of stainless steel.
  • a cross section of the guide device is preferably adapted to a cross section of the bore formed in the hammer head.
  • the bore and the guide device can each have a round cross section.
  • An inner diameter of the bore and an outer diameter of the guide device are preferably chosen so that on the one hand an unimpeded displacement of the hammer head along the guide device is possible, but on the other hand the movement of the hammer head is properly guided.
  • the hammer head At its end facing away from the striking surface, the hammer head preferably has a contact surface.
  • the contact surface preferably extends essentially perpendicularly to the longitudinal axis of the hammer head and preferably also essentially perpendicularly to the longitudinal axis of the guide device.
  • a closing element is preferably provided on an end of the guide device which is remote from the striking surface of the hammer head.
  • the terminating element can be designed, for example, in the form of a protective sphere, but can also have a different shape, depending on requirements.
  • the end element has the purpose of securing that end of the guide device which is remote from the striking surface of the hammer head, for example in order to protect a user from injuries caused by the free end of the guide device.
  • the closing element serves to prevent the hammer head from detaching from the guide device.
  • the closing element can be set up to come into contact with the contact surface of the hammer head in order to move the hammer head along the longitudinal axis of the guiding device in a direction away from the striking surface.
  • the closing element can be detachably connected to the guide device.
  • the closing element can be screwed or glued onto the guide device or held magnetically on the guide device.
  • the closing element can also be designed to be integrated with the guide device.
  • a pivot point of the hammer handle on the hammer head is preferably arranged closer to the contact surface than to the striking surface.
  • a section of the hammer head adjacent to the striking surface can be shaped so as to taper conically in the direction of the striking surface.
  • a section of the hammer head adjacent to the striking surface can have an outer circumference that decreases, in particular continuously decreases, in the direction of the striking surface.
  • a tool receiving element is preferably connected to the guide device at one end of the guide device facing the striking surface of the hammer head.
  • the tool receiving element is preferably detachably connected to the guide device, so that the tool receiving element can be exchanged if necessary, for example in order to be able to actuate different tools with the safety hammer.
  • the tool receiving element can be screwed onto the guide device, for example.
  • the tool receiving element can also be designed to be integrated with the guide device.
  • the tool receiving element preferably includes an impact receiving surface.
  • the impact receiving surface preferably faces the impact surface of the hammer head and is designed to interact with the impact surface of the hammer head when the hammer head is displaced along the longitudinal axis of the guide device in an impact direction.
  • the impact surface and the impact receiving surface consequently define the second position that the hammer head assumes relative to the guide device when a user of the safety hammer has performed a maximum impact movement and the impact surface of the hammer head is on the Impact receiving surface of the tool receiving element strikes.
  • the impact absorbing surface absorbs the kinetic energy of the hammer head transmitted by the impact surface of the hammer head and passes it on to a tool accommodated in the tool receiving element.
  • the impact receiving surface can be formed, for example, by an end face, facing the impact surface of the hammer head, of a sleeve placed on the guide device, in particular one end of the guide device.
  • the tool receiving element can comprise a tool holder which is set up to attach a tool to the tool receiving element.
  • the tool holder can, for example, comprise a receiving sleeve which is provided on an end of the tool receiving element which is remote from the impact receiving surface of the tool receiving element.
  • the shape and size of the tool holder are preferably adapted to the shape and size of a tool to be fastened to the tool receiving element by means of the tool holder.
  • the receiving sleeve can have a cross section and an inside diameter that are adapted to a cross section and an outside diameter of a tool to be fastened to the tool receiving element by means of the tool holder.
  • the tool receiving element can have a retaining flange which projects radially outwards.
  • the retaining flange preferably extends essentially perpendicularly to the longitudinal axis of the guide device and can have a round cross section, for example.
  • the retaining flange is preferably arranged between the impact receiving surface and the tool holder. A user of the safety hammer can then, for example, grip the tool accommodated in the tool holder with one hand and place his thumb on a side of the holding flange facing away from the striking surface of the hammer head. This enables a particularly comfortable use of the safety hammer.
  • the tool holder preferably comprises a magnetic element for magnetically attaching a tool to the tool receiving element. Tools to be accommodated in the tool holder can then be changed particularly easily and quickly.
  • the tool holder can also comprise a differently designed fastening device, for example a thread, which enables the tool to be screwed into the tool holder.
  • a tool provided for attachment in the tool holder of the tool receiving element can be designed, for example, in the form of a center punch, a pin punch, a rivet driver or an aluminum mandrel, but also in the form of a nail or other fastener.
  • the tool can also be designed in the form of pliers or a clamping device which is designed to hold an object in place.
  • the interaction of the contact surface of the hammer head with the closing element of the safety hammer can be used to pull an object, for example a fastener such as a rivet or the like, out of its position.
  • a user can grip the hammer shank and execute a rebounding movement in such a way that the hammer head is moved relative to the guide device in the direction of its second position adjacent to the second end of the guide device.
  • a striking movement by the user can then be converted into a translational movement of the hammer head relative to the guide device in the direction of its first position adjacent to the first end of the guide device and thus in the direction of the closing element.
  • the contact surface of the hammer head hits the closing element.
  • the closing element then absorbs the kinetic energy of the hammer head transmitted by the contact surface of the hammer head and forwards it via the guide device to the tool accommodated in the tool receiving element.
  • the tool exerts a pulling force on the object to be pulled out of its position, so that, for example, a rivet that has not been driven in correctly can be released from its position again in a simple and time-saving manner.
  • the safety hammer is preferably provided with a stable closing element, which can be made of stainless steel or another suitable mechanically stable material, for example. Furthermore, the closing element is preferably connected to the first end of the guide device by means of a stable connection, for example a screw connection, or is designed to be integrated with the guide device.
  • a handle is provided on a free end of the hammer handle.
  • the hammer handle can then be conveniently gripped by a user.
  • the safety hammer 10 shown comprises a hammer head 12 and a hammer handle 14 pivotably attached to the hammer head 12.
  • a handle 15 is provided on a free end of the hammer handle 12 facing away from the hammer head 12.
  • the safety hammer 10 includes a guide device 16, which is designed here in the form of an elongated bar made of stainless steel and has a round cross section, see in particular figure 6 .
  • the hammer head 12 is connected to the guide device 16 in a displaceable manner along a longitudinal axis L of the guide device 16 .
  • the guide device 16 passes through an in the hammer head 12 formed bore 17, so that the longitudinal axis L of the guide device 16 is coaxial with a longitudinal axis of the hammer head 12, see in particular figures 6 and 7 .
  • the hammer head 12 has an impact surface 18 and a bearing surface 20 .
  • the striking surface 18 and the bearing surface 20 extend essentially parallel to one another and essentially perpendicular to the longitudinal axis of the hammer head 12 and consequently to the longitudinal axis L of the guide device 16.
  • the striking surface 18 and the bearing surface 20 are arranged at opposite ends of the hammer head 12. In the representation according to the Figures 1 to 4 the striking surface 18 defines a front end of the hammer head 12, whereas the bearing surface 20 defines a rear end of the hammer head 12.
  • An articulation point P of the hammer shank 14 on the hammer head 12 is arranged closer to the contact surface 20 than to the striking surface 12, ie in the illustration according to FIG Figures 1 to 4
  • the hammer shank 14 is pivotally attached to the hammer head 12 with a rear half of the hammer head 12 .
  • the hammer head 12 has an octagonal cross section, see in particular figures 6 and 7 .
  • other cross-sectional shapes of the hammer head 12 are also possible.
  • a portion of the hammer head 12 adjacent to the striking surface 18, which in the illustration according to FIG Figures 1 to 4 forms a front section of the hammer head 12 is tapered in shape, ie an outer circumference of the hammer head 12 decreases continuously in the section adjacent to the striking surface 18 in the direction of the striking surface 18, see in particular figure 5 .
  • a closing element 22 is provided, which in the exemplary embodiment of the safety hammer 10 shown here is designed in the form of a protective ball, but can also have a different shape as required, see in particular figure 7 .
  • an exchangeable tool receiving element 24 is detachably connected to the guide device 16, see in particular figures 6 , 8th and 9 .
  • the tool receiving element 24 can be plugged onto the guide device 16 or screwed to the guide device 16 .
  • the tool receiving element 24 comprises an impact receiving surface 26 facing the striking surface 18 of the hammer head 12.
  • the impact receiving surface 26 in the safety hammer 10 shown here is formed by an end face, facing the striking surface 18 of the hammer head 12, of a sleeve 28 placed on the end of the guide device 16, see in particular figure 5 .
  • the tool receiving element 24 includes a tool holder 30 with a receiving sleeve 31 which is set up to attach a tool 32 to the tool receiving element 24 .
  • the tool holder 30 has a magnetic element 33, indicated only schematically in the figures, which enables the tool 32 to be magnetically fastened in the receiving sleeve 31 of the tool receiving element 24, see FIG figure 8 .
  • the tool 32 can be, for example, a center punch, a pin punch, a rivet driver or an aluminum mandrel, but also a nail or another fastening means.
  • the tool 32 can also be designed in the form of pliers or a clamping device.
  • the shape and size of the tool holder 30, which here includes a receiving sleeve 31 with an octagonal cross-section, can be adapted to the shape and size of a tool 32 to be fastened to the tool-receiving element 24 by means of the tool holder 30, see in particular figures 8 and 9 .
  • the tool receiving element 24 has a retaining flange 34 that protrudes radially outwards.
  • the retaining flange 34 preferably extends essentially perpendicularly to the longitudinal axis L of the guide device 16 and has a round cross section in the exemplary embodiment of the safety hammer 10 shown here. In the direction of the longitudinal axis L of the guide device 16, the retaining flange 34 is arranged between the impact receiving surface 26 and the tool holder 30, see in particular Figures 5, 6 and 8th .
  • the hammer shank 14 is relative to the hammer head 12 between a in the figure 1 shown first position and one in the figure 2 illustrated second position pivotable.
  • the hammer shank 14 defines an acute angle of approximately 50 to 70°, in particular approximately 60°, with a section of the hammer head 12 that is adjacent to the striking surface 18 and faces the hammer shank 14 .
  • the hammer shank 14 defines an obtuse angle of approximately 120 to 130°, in particular approximately 125°, with the section of the hammer head 12 adjacent to the striking surface 18 and facing the hammer shank 14 .
  • the pivotal movement of the hammer shank 14 relative to the hammer head 12 is not limited to movement between the first and second positions.
  • the hammer shank 14 can be pivoted in an angular range of approximately 0 to 180° relative to the hammer head 12, so that the hammer shank 14 forms any desired angle in this angular range with the section of the hammer head 12 adjacent to the striking surface 18 and facing the hammer shank 14 can.
  • the hammer shank 14, as shown in FIGS figures 8 and 9 shown also pivoted relative to the hammer head 12 in such a way that the hammer shank 14 extends essentially parallel to the longitudinal axis L of the guide device 16 .
  • the hammer head 12 is relative to the guide device 16 between a in the figure 1 shown first position and one in the figure 2 illustrated second position displaceable.
  • the hammer head 12 In the first position, the hammer head 12 is arranged adjacent to a first end of the guide device 16, which in the representation according to FIG Figures 1 and 2 a rear end of the guide device 16 forms.
  • the hammer head 12 In its second position, however, the hammer head 12 is arranged adjacent to a second end of the guide device 16 opposite the first end, which in the representation according to FIG Figures 1 and 2 one end of the guide device 16 forms.
  • a user conveniently grasps the hammer shank 14 with one hand by the handle 15 provided on the hammer shank 14. With the other hand, the user holds the tool 32 accommodated in the tool holder 30 and guides it to a desired position.
  • the user can, as in the Figures 3 and 4 shown, place the thumb on a side facing away from the striking surface 18 of the hammer head 12 of the retaining flange 34 provided on the tool receiving element 24 .
  • the swing-out movement carried out by the user is converted into a pivoting movement of the hammer shank 14 relative to the hammer head 12 in the direction of the first position on the one hand and a translational movement of the hammer head 12 relative to the guide device 16 in the direction on the other hand the first position implemented.
  • the hammer shank 14 is arranged in its first position relative to the hammer head 12 .
  • the hammer head 12 is arranged in its first position relative to the guide device 16, see FIG figures 1 and 3 .
  • a striking movement performed by the user is converted into a pivoting movement of the hammer shank 14 relative to the hammer head 12 in the direction of the second position and also a translatory movement of the hammer head 12 relative to the guide device 16 in the direction of the second position, see figure 4 .
  • the hammer shank 14 is arranged in its second position relative to the hammer head 12, while the hammer head 12 is also arranged in the second position relative to the guide device 16, see FIG figure 2 .
  • the translational movement of the hammer head 12 relative to the guide device 16 is stopped by the interaction of the impact surface 18 of the hammer head 12 with the impact receiving surface 26 of the tool receiving element 24 .
  • the kinetic energy of the hammer head 12 is transferred to the tool receiving element 24 and the tool 32 received in the tool receiving element 24 .
  • the interaction of contact surface 20 of hammer head 12 with closing element 22 can be used to pull an object, for example a rivet, out of position.
  • an object for example a rivet
  • a user can grip the hammer shank 14 and perform a swinging movement in such a way that the hammer head 12 is moved relative to the guide device 16 in the direction of its second position adjacent to the second end of the guide device 16 until it is somewhat in the figure 2 has reached the position shown.
  • a striking movement by the user is then converted into a translational movement of the hammer head 12 relative to the guide device 16 in the direction of its first position adjacent to the first end of the guide device 16 and thus in the direction of the closing element 22 .
  • the contact surface 20 of the hammer head 12 hits the closing element 22, which absorbs the kinetic energy of the hammer head 12 and via the guide device 16 to the tool 32 accommodated in the tool receiving element 24 .
  • a pulling force is exerted via the tool 32 on the object to be pulled out of its position.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Percussive Tools And Related Accessories (AREA)
EP21182383.6A 2021-06-29 2021-06-29 Marteau de sécurité Pending EP4112230A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP21182383.6A EP4112230A1 (fr) 2021-06-29 2021-06-29 Marteau de sécurité

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP21182383.6A EP4112230A1 (fr) 2021-06-29 2021-06-29 Marteau de sécurité

Publications (1)

Publication Number Publication Date
EP4112230A1 true EP4112230A1 (fr) 2023-01-04

Family

ID=76708050

Family Applications (1)

Application Number Title Priority Date Filing Date
EP21182383.6A Pending EP4112230A1 (fr) 2021-06-29 2021-06-29 Marteau de sécurité

Country Status (1)

Country Link
EP (1) EP4112230A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2572487A (en) * 1949-01-04 1951-10-23 Rupert F Jackson Manually operated impact tool
US3011258A (en) * 1958-05-23 1961-12-05 Charles J Kotchan Center punch with hammer and magnifier
US20040129437A1 (en) * 2002-07-22 2004-07-08 Walsh Leonard M. Impact tool
US10611008B2 (en) * 2016-11-20 2020-04-07 Custom Molded Products, Llc Installation tools for a water containing structure, components suitable for use therewith, and systems and methods of use therefor
CN214238041U (zh) * 2020-12-31 2021-09-21 中国石油化工股份有限公司 一种滑锤

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2572487A (en) * 1949-01-04 1951-10-23 Rupert F Jackson Manually operated impact tool
US3011258A (en) * 1958-05-23 1961-12-05 Charles J Kotchan Center punch with hammer and magnifier
US20040129437A1 (en) * 2002-07-22 2004-07-08 Walsh Leonard M. Impact tool
US10611008B2 (en) * 2016-11-20 2020-04-07 Custom Molded Products, Llc Installation tools for a water containing structure, components suitable for use therewith, and systems and methods of use therefor
CN214238041U (zh) * 2020-12-31 2021-09-21 中国石油化工股份有限公司 一种滑锤

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