EP3450109B1 - Dispositif à impact, de préférence dispositif à impact portable - Google Patents

Dispositif à impact, de préférence dispositif à impact portable Download PDF

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Publication number
EP3450109B1
EP3450109B1 EP17188210.3A EP17188210A EP3450109B1 EP 3450109 B1 EP3450109 B1 EP 3450109B1 EP 17188210 A EP17188210 A EP 17188210A EP 3450109 B1 EP3450109 B1 EP 3450109B1
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EP
European Patent Office
Prior art keywords
tool
longitudinal axis
striking force
storage element
impact force
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.)
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Application number
EP17188210.3A
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German (de)
English (en)
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EP3450109A1 (fr
Inventor
Holger ZENZ
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Individual
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Individual
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Publication date
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Priority to EP17188210.3A priority Critical patent/EP3450109B1/fr
Priority to PCT/EP2018/072825 priority patent/WO2019042869A1/fr
Publication of EP3450109A1 publication Critical patent/EP3450109A1/fr
Application granted granted Critical
Publication of EP3450109B1 publication Critical patent/EP3450109B1/fr
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D17/00—Details of, or accessories for, portable power-driven percussive tools
    • B25D17/24—Damping the reaction force
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D17/00—Details of, or accessories for, portable power-driven percussive tools
    • B25D17/06—Hammer pistons; Anvils ; Guide-sleeves for pistons
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D17/00—Details of, or accessories for, portable power-driven percussive tools
    • B25D17/08—Means for retaining and guiding the tool bit, e.g. chucks allowing axial oscillation of the tool bit
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D2217/00—Details of, or accessories for, portable power-driven percussive tools
    • B25D2217/0011—Details of anvils, guide-sleeves or pistons
    • B25D2217/0015—Anvils
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D2222/00—Materials of the tool or the workpiece
    • B25D2222/54—Plastics
    • B25D2222/57—Elastomers, e.g. rubber
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D2250/00—General details of portable percussive tools; Components used in portable percussive tools
    • B25D2250/005—Adjustable tool components; Adjustable parameters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D2250/00—General details of portable percussive tools; Components used in portable percussive tools
    • B25D2250/105—Exchangeable tool components
    • B25D2250/111—Bits, i.e. inserts or attachments for hammer, chisel, pick
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D2250/00—General details of portable percussive tools; Components used in portable percussive tools
    • B25D2250/371—Use of springs

Definitions

  • the present invention relates to a hammer device, preferably a hand-held hammer device according to the preamble of patent claim 1 and a hammer system with such a hammer device and with a tool according to patent claim 13.
  • a tool is to be driven into a material.
  • a chisel or a comparable tool can be manually driven into a rock or the like by an operator using a hammer.
  • devices such as compressed air hammers are usually used, e.g. in mining, road construction and other construction work and in particular in demolition work, which can be carried out manually by an operator, but e.g. by means of compressed air, electricity, hydraulically or be powered by petrol.
  • Such devices may also be guided by a machine such as a hydraulic hammer type excavator.
  • a pneumatic hammer usually works in such a way that air is compressed by a compressor outside of the pneumatic hammer and fed to the pneumatic hammer via a sufficiently robust hose. There, when the operator actuates a valve during operation, the compressed air reaches the working cylinder of the compressed air hammer via a valve mechanism and a controller. A piston is accelerated in the direction of the chisel tip by the compressed air flowing in, where it hits a striking piece, which is usually referred to as an anvil, or the tool itself. The rapid deceleration of the piston transfers the impulse to the hammer or, in the case of the version without a hammer, directly to the tool.
  • the impact energy thus reaches the tool, such as the chisel, which can be driven forwards, ie along the longitudinal axis in the axial direction away from the piston or the impact piece, into the workpiece.
  • the piston is returned to the starting position by reversed air from one or more bores on the side of the cylinder facing the tool.
  • the combination of a high impulse energy transfer, a small chisel tip and the application of the compressed air hammer can result in an enormous impact force that can be exerted on the workpiece.
  • the “freeing” of the stuck tool can only be done unfavorably, for example, by levering the hammer with or without a simultaneous impact, in order to reduce the clamping effect of the jammed material and allow the tool to be pulled again overall.
  • the tool that has become stuck must be freed by other tools. During this time of clamping, the air hammer may not be available for use.
  • the DE 10 2016 101 675 A1 describes a hammer device according to the preamble of claim 1 with a striking mechanism which is designed to be able to strike a tool in the axial direction along the longitudinal axis.
  • the hammer device has at least one impact force storage means, which is designed to at least partially store an impact force of the impact mechanism in the axial direction via the tool and at least partially to deliver it back to the tool in the opposite direction as an impact force in the opposite axial direction.
  • This can be used to machine a workpiece from behind and drive it towards the operator.
  • an object that is fixed in the axial direction can be loosened again by the tool in the opposite axial direction.
  • the impact force storage means is held by a detachable holding element of the hammer device in such a way that the impact force storage means can be in continuous or intermittent contact with the striking mechanism or can be spaced apart from the striking mechanism in the axial direction in such a way that a transfer of the impact force from the striking mechanism to the impact force storage medium can be completely avoided .
  • a purely axial impact of the tool can take place, as previously known and described above, or its impact force can be partially or completely converted into a counter-axial kickback of the tool via the impact force storage means.
  • the hammer device is the DE 10 2016 101 675 A1 suitable, with a corresponding setting of the detachable holding element, to partially or completely convert an axial impact of the percussion mechanism into a counter-axial recoil of the tool in order to be able to strike a workpiece from behind.
  • a fixed tool must be solved by other techniques or tools even with such a hammer device, because in the hammer device DE 10 2016 101 675 A1
  • One object of the present invention is to provide a hammer device of the type described at the outset, so that an impact force in the opposite axial direction can also be transmitted to a fixed tool of the hammer device.
  • a hammer device of the type described above is to be provided so that a stuck tool of the hammer device can be acted upon by an impact force of the hammer device in the opposite axial direction in order to release the tool again.
  • an alternative possibility for the hammer device DE 10 2016 101 675 A1 be created to charge an impact force storage element with kinetic energy, so that a movement of a tool can be effected exclusively in the opposite axial direction, which makes it possible by rigidly coupling objects to be released to the tool, e.g. by means of suitable hook or gripping elements, by hitting them purely to loosen or remove from materials or to develop forces.
  • the present invention relates to a hammer device such as an air hammer.
  • This hammer device can preferably be hand-held, i.e. held and guided by a person as the operator in one hand or with both hands.
  • the hammer assembly can also be guided by a device such as a machine such as an excavator.
  • a device such as a machine such as an excavator.
  • use in hammer systems in the field of natural gas production, oil production, geothermal energy and, in principle, in deep drilling applications is conceivable, since combined axial and, in some cases, counter-axial impact functionalities are also of interest here.
  • the hammer device has an impact mechanism which is designed to be able to impact a tool in the axial direction along the longitudinal axis.
  • the tool can be accommodated in a tool holder of the hammer device, e.g. by means of a holding element, as will be described in more detail below.
  • the tool can be used interchangeably or permanently.
  • the tool can preferably be a chisel, for example to be able to bring about a percussive demolition of, for example, rock, masonry, concrete, asphalt or the like.
  • the hammer device also has at least one impact force storage element, which is designed to at least partially store an impact force of the impact mechanism in the axial direction along the longitudinal axis and to deliver it back to the tool at least partially as an impact force of the impact mechanism in the opposite axial direction along the longitudinal axis.
  • An impact force storage element is understood to be any means which is able to absorb kinetic energy in the axial direction and release it again at least partially, preferably as completely as possible, in the opposite axial direction.
  • the impact force storage element can preferably be an elastic means which can deflect the kinetic energy of the impact mechanism from the axial direction into the counter-axial direction.
  • the axial direction designates one of the two directions along the longitudinal axis of the hammer device; the anti-axial direction means the opposite direction along the longitudinal axis of the hammer assembly.
  • the hammer device also has an impact force diversion element, which is designed and is or can be arranged in the power flow between the impact mechanism and the impact force storage element in such a way that the impact force of the impact mechanism in the axial direction is at least partially, preferably completely, bypassing the tool can be stored in the impact force storage element.
  • the present invention is based on the finding that a tool of a hammer device is driven in the axial direction into a workpiece or into a material to be machined by impacts with an impact force of the percussion mechanism (chiselling impact) and is thereby possibly fixed can.
  • an operator or a machine such as an excavator, which guides the hammer device and can push the workpiece in the axial direction along the longitudinal axis toward the workpiece, the hammer device to release of the tool in the counter-axial direction along the longitudinal axis away from the workpiece.
  • the tensile forces may not be sufficient to free the tool of the hammer device.
  • the tractive forces required for liberation can damage the hammer device.
  • the hammer device itself can hit the tool in a counter-axial direction along the longitudinal axis in order, for example, to free it from a stuck position within a workpiece (pull impact).
  • the impact force of the impact mechanism can be directed in the axial direction along the longitudinal axis past the tool into the impact force storage element by means of the impact force diversion element, so that the impact force can be stored there and released again in the opposite axial direction along the longitudinal axis.
  • the stored energy can be released either partially back to the impact force deflection element and to the tool or completely and exclusively to the tool.
  • the impact force of the impact mechanism can be routed past the tool to the impact energy storage element, bypassing the tool, and partially or completely transmitted to the tool in the counter-axial direction along the longitudinal axis, so that the tool can be driven in the counter-axial direction along the longitudinal axis can.
  • a tool that was fixed by using the hammer device can also be released again by the hammer device itself.
  • This can reduce the cost of this measure and, in particular, protect the means used from misuse or unnecessary wear or even breakage and significantly reduce the time it takes to interrupt processing of the workpiece at this point.
  • this effect can also be used in a tool that can be moved in the direction along the longitudinal axis, in order to achieve a movement in the opposite axial direction along the longitudinal axis in an alternative way, as in the hammer device of FIG DE 10 2016 101 675 A1 known to produce.
  • the tool is stuck, e.g. due to jamming in a workpiece
  • redirecting the impact force by the impact force diversion element past the stuck tool is the only known possibility of charging the impact force storage element with kinetic energy even in this position and thereby liberating impacts in the opposite axial direction to be exerted on the workpiece along the longitudinal axis.
  • this is not possible because there is no possibility of bypassing the tool.
  • the impact force diversion element can be arranged continuously between the impact mechanism and the tool, so that in this case, e.g. by variable spacing of the impact force diversion element from the impact force storage element, e.g. the operator can select whether the impact force diversion element transmits the axial impact force of the impact mechanism to the tool and/or is to take place on the impact force storage element, as will be described in more detail below.
  • the impact force deflection element can also be arranged outside of the flow of force between the impact mechanism and the tool if the tool is to be driven by the impact mechanism by means of a caulking impact directly onto the workpiece.
  • the impact force diversion element can be brought into direct contact with the impact mechanism on one side and with the impact force storage element on the opposite side, e.g. by the operator, e.g Impact force deflection element can be effected past the tool onto the impact force storage element, in order to then, after discharging the impact force storage element, hit the tool from behind, i.e. in the opposite axial direction along the longitudinal axis.
  • Impact force deflection element can be effected past the tool onto the impact force storage element, in order to then, after discharging the impact force storage element, hit the tool from behind, i.e. in the opposite axial direction along the longitudinal axis.
  • the redirection of the axial impact force of the hammer mechanism by means of the impact force redirection element can be used completely past the tool as a rebounding function of a tool that is accommodated in the hammer device, in order to free a stuck tool from the workpiece by rebounding.
  • the recoil function of a tool can be used in order to achieve a force exerted by the tool on a workpiece in the opposite axial direction along the longitudinal axis, e.g DE 10 2016 101 675 A1 described there.
  • Another advantage of this option is that the distance between the impact force diversion element and the impact force storage element can influence the depth of the impact depth that is carried out. As a result, it can be made possible to specify the depth of the pry impact for precise machining of a workpiece. This can increase the quality of the editing.
  • the hammer device according to the invention is preferably designed to offer the functions of the partial and/or the complete pulling blow in addition to the prying blow.
  • the hammer device according to the invention is preferably designed to be able to exert both sole prying blows on a workpiece in the axial direction along the longitudinal axis and sole pulling blows on a workpiece from behind in the opposite axial direction along the longitudinal axis and on a tool stuck in a workpiece.
  • the possibility can preferably also be created of converting an impact of the percussion mechanism into a caulking impact with a subsequent pulling impact.
  • the hammer device according to the invention can be used as previously known to perform pure mortising blows and can be expanded to include additional functions through the optional possibility of performing full or partial pulling hammers and preferably also combined morting/pulling hammers.
  • the at least partially or optionally bypassing the tool with regard to the power flow between the percussion mechanism and the impact force storage element by the impact force redirection element can be done by any body which is arranged and designed, a to transfer kinetic energy of an axial impact of the impact mechanism partially or completely instead of the tool on the impact force storage element, so that a previously described tensile impact can be exerted.
  • This body or a plurality of bodies can be designed as a one-piece or one-piece component of the impact force deflection element and/or as a component of the impact force storage element or as a separate element arranged therebetween at least in sections in the direction along the longitudinal axis be.
  • a one-piece design and a separate design can enable the body to be produced separately, which can simplify production.
  • a one-piece can simplify the production because the body can already be formed as part of the impact force deflection element or the impact force storage element before assembly, which can save at least one assembly step and improve the strength of the connection between the body and the element. The latter can increase the longevity of the connection precisely because of the impulse loads from the impact forces.
  • a tool is receivable by the hammer means along the longitudinal axis and the body is spaced apart, particularly radially spaced, along the longitudinal axis.
  • power transmission and power transmission can take place on the outside past the tool, as a result of which the most uniform possible power transmission can be achieved.
  • This can be brought about in particular when using a plurality of bodies distributed around the longitudinal axis, preferably in the circumferential direction, or in the case of a body which is closed around the longitudinal axis, preferably in the circumferential direction.
  • the percussion mechanism can preferably be operated by means of compressed air, by means of pressurized fluid, by means of a fuel-operated drive such as, for example, by means of a petrol engine and/or electromechanically.
  • a fuel-operated drive such as, for example, by means of a petrol engine and/or electromechanically.
  • drive means can be used.
  • an impact function on the tool can be effected in the axial direction along the longitudinal axis by means of a movable piston or percussion mechanism and in the counter-axial direction along the longitudinal axis by at least one impact energy storage element charged during the previous impact.
  • the impact force redirecting element is configured to receive the impact force of the impact mechanism in the axial direction along the longitudinal axis on one side in the direction along the longitudinal axis, and the impact force redirecting element is further configured to receive the impact force in the direction along the longitudinal axis on the opposite side power of the percussion to deliver in the axial direction along the longitudinal axis to the tool and/or to the impact force storage element.
  • the impact force diversion element can be used to distribute the absorbed axial impact force such that the axial impact force can be transmitted either completely to a tool that is accommodated or completely to the impact force storage element.
  • a pure prying blow or a pure pulling blow can be exerted by the tool.
  • the axial impact force can also be distributed on the tool and on the impact force storage element, which can lead to the tool first applying a prying impact with parallel charging of the impact force storage element and subsequent pulling impact in the opposite axial direction along the longitudinal axis (combined prying/pulling impact). previously described.
  • the impact force diversion element and/or the impact force storage element is/are designed at least in sections in the direction along the longitudinal axis to extend past the tool, preferably in parallel, at least in sections.
  • a spatial bypass of the tool can be achieved by either only the impact force redirection element or only the impact force storage element or partially both by the impact force redirection element and by the impact force storage element, so that through a touching contact between the impact force redirection element and the impact force storage element, a transfer of the kinetic energy of a Impact of the impact mechanism can take place in the axial direction along the longitudinal axis in order to charge the impact force storage element with this kinetic energy, which can then be released again in the opposite axial direction along the longitudinal axis.
  • the distance covered up to the touching contact touching contact which can be achieved by the dimension of the distance between the impact force deflection element and the impact force storage element in the direction along the longitudinal axis or by avoiding such a distance, the degree of transmission of the kinetic energy can possibly be influenced in order to be able to perform a combined stemming hit with a subsequent pull hit in the first case and a pure pull hit in the second case.
  • the impact force diversion element and/or the impact force storage element extend preferably parallel past the tool in order to be able to implement the properties described above in the smallest possible space.
  • the impact force diversion element and/or the impact force storage element has or have at least one web, preferably a plurality of webs, at least in sections, which extends or extends past the tool, preferably parallel, at least in sections .
  • a web can be understood to mean a body which extends in the direction along the longitudinal axis and which is present only in sections when viewed in the circumferential direction of the tool. This can be sufficient to achieve the properties described above.
  • the web can be designed entirely as a component of the impact force diversion element or entirely as a component of the impact force storage element or partially as a respective component or as an independent component or as independent components. Furthermore, for the reasons already explained above, the web can be formed in one piece and preferably in one piece with the impact force deflection element or with the impact force storage element.
  • the impact force diversion element and/or the impact force storage element has, at least in sections, at least one pair, preferably a plurality of pairs, of webs lying opposite one another diametrically to the longitudinal axis, which webs are located at least in sections on the tool, preferably parallel, extends or extend past.
  • a pair of webs allows the previously described advantages of multiple webs to be used.
  • arranging these webs of the pair diametrically opposite one another to the longitudinal axis can contribute to achieving the most uniform possible transmission and distribution of forces with as few webs as possible in favor of the reduced installation space, so that the associated advantages described above can be achieved.
  • the impact force diversion element and/or the impact force storage element has or have at least in sections at least one body which is closed in the circumferential direction about the longitudinal axis, preferably at least one ring-shaped body and/or an angular, preferably hexagonal, body. which at least partially extends past the tool, preferably parallel.
  • Such a body can result in a correspondingly uniform distribution of forces and transmission of forces in the circumferential direction. Furthermore, a very stable body can be created for the impulse-like power transmission, so that, for example, lateral guide elements in the circumferential direction between individual webs can be dispensed with. With a one-piece design, assembly can also be simplified because only a single body has to be assembled on the impact force deflection element and/or on the impact force storage element.
  • the body can be designed entirely as a component of the impact force diversion element or entirely as a component of the impact force storage element or partially as a respective component or as an independent component or as independent components. Furthermore, for the reasons already explained above, the body can be designed in one piece and preferably in one piece with the impact force deflection element or with the impact force storage element.
  • Designing the body ring-shaped can be advantageous in order to create a body that is as cost-effective as possible, which can be produced, for example, as turning time.
  • an angular and in particular a hexagonal, i.e. hexagonal, body can also be used, which with its inner contour can accommodate the tool in a torsion-proof manner.
  • An angular body can be more complex to produce and therefore more expensive, but it can still prevent the tool from twisting about the longitudinal axis.
  • the hammer device preferably has a tool holder which is correspondingly angular.
  • the impact force diversion element has a contact surface facing the impact force storage element in the direction along the longitudinal axis
  • the impact force storage element has a first contact surface in the direction along the longitudinal axis facing the impact force diversion element, the contact surface of the impact force diversion element being formed, the impact force to be able to transmit the impact mechanism in the axial direction along the longitudinal axis by touching the first contact surface of the impact force storage element.
  • a sufficient area transmission possibility can be created, to transmit the impulse of the axial impact force of the impact mechanism from the impact force redirection element to the impact force storage element.
  • the two contact surfaces can preferably be arranged relative to one another, ie their overlap when touching in the direction along the longitudinal axis can be dimensioned such that the impulse-like impact force of the respective application can be transmitted effectively.
  • the contact surfaces can be dimensioned sufficiently large for the contact surfaces or their elements to have a long service life even after prolonged use.
  • the impact force storage element has a second contact surface facing the tool in the direction along the longitudinal axis, the second contact surface of the impact force storage element being designed to absorb the impact force of the impact mechanism in the opposite axial direction along the longitudinal axis by touching a contact surface of the tool , preferably to be able to transfer to a contact surface of a radial projection of the tool.
  • the impact energy storage element is designed to be spaced apart from the impact force deflection element in the direction along the longitudinal axis in a first position, so that the impact force of the impact mechanism cannot be absorbed in the axial direction, and the impact energy storage element is also designed to be arranged so close in a second position relative to the impact force redirection element in the direction along the longitudinal axis that the impact force of the impact mechanism in the axial direction can be at least partially, preferably completely, absorbed by the impact force redirection element. In this way, a first position can be taken in order to be able to perform a pure caulking as previously known.
  • Another position can be taken in order to be able to perform a combined pry stroke followed by a pulling stroke or preferably a pure pulling stroke.
  • a combined pry stroke followed by a pulling stroke can be performed, and in a third position, a pure pulling stroke can be performed.
  • the operator can switch between these functions in order to be able to use these functions as required.
  • the impact energy storage element can be moved back and forth between the first position and the second position in the direction along the longitudinal axis by means of a rotary movement about the longitudinal axis, the rotary movement preferably being less than a full revolution about the longitudinal axis, particularly preferably by about half a turn around the longitudinal axis.
  • the operator can switch very easily and/or intuitively between the functions described above take place. This applies in particular to a hand-held hammer device.
  • a distance between the impact force deflection element and the impact force storage element in the direction along the longitudinal axis can be brought about by the rotary movement, e.g. via a thread with a corresponding pitch.
  • the greater the pitch of the thread the smaller the extent of the rotational movement about the longitudinal axis must be in order to bring about a change in distance in the direction along the longitudinal axis.
  • a purely translational approach of the impact force deflection element in the direction of the impact force storage element along the longitudinal axis can also take place, in which case the position to be assumed can then preferably be fixed by a lock.
  • the impact force storage element is designed to be held by means of a holding element on a housing body of the hammer device, the holding element together with the impact force storage element being adjustable in the direction along the longitudinal axis relative to the housing body, preferably rotatable about the longitudinal axis, and/or or wherein the impact force storage element is designed to be adjustable in the direction along the longitudinal axis relative to the holding element, preferably rotatable about the longitudinal axis.
  • a retaining element such as a retaining cap can be used to terminate the hammer device in the direction along the longitudinal axis towards the workpiece, through which the tool held can be guided.
  • the holding element can preferably be removable and particularly preferably unscrewable in order to be able to accommodate the tool.
  • the tool can preferably have a collar in the form of a radial edge or a radial projection in order to be held within the holding element by the radial projection during the execution of caulking blows, i.e. not to be driven out of the hammer device by the impact force.
  • Such a holding element or another holding element can be used to hold the impact force storage element, in which case either the holding element together with the impact force storage element can be movable relative to the housing body of the hammer device or the impact force storage element can be movable relative to the retaining element of the hammer device at least along the longitudinal axis such that this relative movement increases the distance along the longitudinal axis between the impact force redirection element and the impact force storage element can be adjusted, for example, by the operator. In principle, this can be done by a relative movement of the corresponding movement partners of the hammer device in the direction along the longitudinal axis.
  • this change in distance in the direction along the longitudinal axis can be achieved by a separate rotary movement of either the retaining cap or the impact energy storage element, with a combined rotary movement of both elements and a combined rotary and translatory movement in the direction along the longitudinal axis being possible, which is both solely can be carried out partially or completely together by the retaining cap or the impact force storage element and by both bodies.
  • the impact force storage element may be arranged in a stationary manner in the retaining cap and to change the distance between the impact force deflection element and the impact force storage element in the direction along the longitudinal axis by rotating the retaining cap around the longitudinal axis, preferably approximately half, so that an operator can switch between two of the functions described above, preferably between the three functions described above, by a simple, intuitive and direct hand movement.
  • the impact force storage element is designed to be elastically restoring, preferably incompressibly elastically restoring, with the impact force storage element preferably having an elastomer body, particularly preferably consisting of an elastomer body, and/or preferably a metallic spring, particularly preferably a metallic helical spring, has, preferably consists of this.
  • the impact force storage element preferably having an elastomer body, particularly preferably consisting of an elastomer body, and/or preferably a metallic spring, particularly preferably a metallic helical spring, has, preferably consists of this.
  • an elastically restoring impact force storage element can release its energy back to the tool quickly and with little loss in the opposite direction to the previous impact direction. The efficiency can be increased by using an almost incompressible impact force storage element.
  • an elastomer body which can also be referred to as an elastomer spring, or a metallic spring
  • Elastomer bodies can be easily produced and adjusted to the desired shore hardness by selecting the material in order to provide the desired storage of impact force for the respective application.
  • Metallic springs can also be adjusted to the desired spring constant through their geometry, material selection, etc.
  • helical compression springs can be used for deflection in the direction along the longitudinal axis. It is also possible to have several elastomeric bodies and/or several metallic ones Springs are used together. At least one elastomer body can also be used together with at least one metallic spring as an impact force storage element.
  • the present invention also relates to a hammer system with a hammer device as described above and with a tool, wherein the tool is designed to transmit the impact force of the impact mechanism of the hammer device in the axial direction along the longitudinal axis, preferably via a tool insertion end axially opposite a tool tip, particularly preferably via a tool insertion end of a tool shank that is axially opposite a tool tip, the tool having at least one radial projection which is designed to at least partially absorb the impact force of the impact mechanism of the hammer device in the opposite axial direction along the longitudinal axis from the impact force storage element of the hammer device.
  • a tool can be provided which can enable the properties and advantages of a hammer device according to the invention, as described above, to be implemented.
  • Such a tool can be used to be able to perform some or all of the possible functions of the hammer device described above, such as a sole prying blow, a sole pulling blow and a combined prying blow followed by a pulling blow.
  • the radial projection has a contact surface facing the impact force storage element of the hammer device in the direction along the longitudinal axis, wherein the contact surface of the radial projection is designed to transfer the impact force of the impact mechanism of the hammer device in the opposite axial direction along the longitudinal axis from the impact force storage element pick up hammer device.
  • this contact surface what has already been described above with regard to the contact surfaces of the impact force diversion element and/or the impact force storage element applies accordingly.
  • the tool has a tool end for machining a workpiece, the tool end being designed to be exchangeable.
  • the end of the tool for machining a workpiece can also be referred to as the tool tip.
  • the tool end or the tool tip can be designed to be exchangeable with respect to a shank of the tool.
  • the tool end or the tool tip can preferably be attached to or removed from the shank of the tool by means of a screwing movement. In this way it is possible to provide the corresponding end of the tool or the tool shank with a suitable tool end or with a suitable tool tip, depending on the desired function, so that the tool can be used in a variety of ways.
  • a chisel tip can be used for a caulking blow, which can be exchanged for a hook for a pulling blow.
  • different chisel points chisel point bits
  • hooks can also be used.
  • the tool itself can thereby can be regarded as a universal interchangeable adapter, which serves to connect the interchangeable tool tip and the hammer device and can be converted and used depending on the task.
  • figure 1 shows a schematic sectional view of a hammer device 1 according to the invention according to a first exemplary embodiment without a tool 2.
  • the hammer device 1 extends essentially along a longitudinal axis X, to which a radial direction R is oriented perpendicularly.
  • One of the two directions along the longitudinal axis X can be referred to as the axial direction A and the opposite direction along the longitudinal axis X can be referred to as the counter-axial direction B.
  • figure 2 shows a schematic sectional view of a tool 2 according to the invention.
  • the hammer device 1 can be divided into a stationary housing part 10, which can also be referred to as a housing body 10, and an adjustable housing part 16, which can also be referred to as a holding element 16 or a holding cap 16.
  • the retaining cap 16 can be moved relative to the housing body 10 along the longitudinal axis X, as will be explained further below.
  • the housing body 10, the retaining cap 16 and all other elements of the hammer device 1 associated therewith are preferably designed to be cylindrical and rotationally symmetrical to the longitudinal axis X.
  • the hammer device 1 is designed as a hand-held hammer device 1 and preferably as a compressed-air hammer 1 . Therefore, the housing body 10 has a handle 11 at its one end along the longitudinal axis X, which can be gripped with one hand by an operator who guides the pneumatic hammer 1 by hand. Extending away from the handle 11 along the longitudinal axis X in the axial direction A as part of the housing body 10 is a hammer mechanism receptacle 12 which can also be referred to as the hammer mechanism housing 12 .
  • the striking mechanism 13 which can also be referred to as the striking piston 13 or the striking piece 13 , is arranged in the striking mechanism receptacle 12 . If the hammer device 1 is implemented as a compressed air hammer 1, the percussion mechanism 13 is operated by compressed air, which can be supplied from outside the compressed air hammer 1, e.g. from a compressor via a hose (not shown).
  • a tool holder 14 which can also be referred to as a tool housing 14 , adjoins the impact mechanism holder 12 as a further component of the housing body 10 along the longitudinal axis X in the axial direction A.
  • a tool 2 such as in the figure 2 shown, are included.
  • the transition area between the hammer mechanism holder 12 and the tool holder 14 is radially narrower and represents a separating element 14a of the two holders 12, 14.
  • the separating element 14a serves as a stop surface along the longitudinal axis X for the radially outer part of the hammer mechanism 13 and in the counter-axial direction B as a stop surface along the longitudinal axis X for the radially outer part of an impact force deflection element 15, which will be described further below.
  • the two radially inner areas of the striking mechanism 13 and of the impact force deflection element 15 can touch each other in a force-transmitting manner through a radially inner through-opening of the separating element 14a, which extends along the longitudinal axis X.
  • the tool 2 is designed as a chisel 2 and has a cylindrical tool shank 20 which extends along the longitudinal axis X, see FIG figure 2 .
  • a hexagonal tool shank 20 could also be used.
  • the tool shank 20 has a tool end 21 which acts as a tool tip 21 in the form of a chisel tip 21 is formed, which can be replaced by unscrewing or screwing on.
  • the tool shank 20 has a tool insertion end 22 as the impact end 22, which has an impact surface 22a.
  • the impact mechanism 13 of the hammer device 1 can exert impacts in the axial direction A along the longitudinal axis X on the impact surface 22a of the impact end 22 of the tool 2 and thereby the chisel tip 21 of the tool 2 in driving a workpiece 3 such as, for example, into a stone wall 3, a concrete wall 3, a rock 3 or the like, see eg Figures 7 to 13 . Further details of the tool 2 are described below.
  • impacts D or impact forces D of the impact mechanism 13 can thus be exerted on the tool 2 in the axial direction A along the longitudinal axis X in order to have the tool 2 strike a workpiece 3 by means of caulking blows, as further below will be explained in more detail, cf. Figures 7 to 9 .
  • kinetic energy can be repeatedly transmitted in pulses from the impact mechanism 13 in the axial direction A along the longitudinal axis X to the tool 2, which can then be passed on to the workpiece 3 in order to smash it, for example.
  • the hammer device 1 has an impact force deflection element 15, which can also be referred to as a sliding tool holder 15.
  • the impact force diversion element 15 is arranged within the tool holder 14 in the direction along the longitudinal axis X, so that the impact force D of the impact mechanism 13 in the axial direction A along the longitudinal axis X is routed past the tool 2 if necessary and the tool 2 after reversing the direction by means of an impact force storage element 18 can be supplied in the opposite axial direction B as an impact force D' along the longitudinal axis X.
  • the impact force deflection element 15 has a radially inner part, which is designed to protrude along the longitudinal axis X into the through opening of the separating element 14a, in order to be touched in the event of an impact of the corresponding cylindrical radially inner part of the impact mechanism 13 in a force-transmitting manner and thereby the impact force D record, see eg figure 1 .
  • the absorbed kinetic energy of an impact D of the impact mechanism 13 can be divided between the tool 2 and the previously mentioned impact energy storage element 18 via the impact force diversion element 15, which is also referred to as a recoil spring element 18 and preferably by an elastomer body 18 as an elastomer spring 18 or by a metallic spring 18, in particular by a metallic helical spring 18, can be realized.
  • the impact force diversion element 15 which is also referred to as a recoil spring element 18 and preferably by an elastomer body 18 as an elastomer spring 18 or by a metallic spring 18, in particular by a metallic helical spring 18, can be realized.
  • Several identical or different impact force storage elements 18 can also be used in combination with one another.
  • a cylindrical elastomer spring 18 is used as the impact force storage element 18, through which the tool 2 can be guided.
  • the impact force storage element 18 is encompassed and held by the retaining cap 16 so that the impact force storage element 18 is arranged within the retaining cap 16 and within the tool holder 14 .
  • the retaining cap 16 has a passage opening 17 through which a tool 2 accommodated in the tool holder 14 can be passed to the outside.
  • the passage opening 17 is designed in such a way that the tool 2 can be held within the tool holder 14 by a radial projection 23 of the tool shank 20 of the tool 2, cf. figure 2 , is formed radially larger than the passage opening 17 of the retaining cap 16 at least in sections.
  • the tool 2 cannot be driven out of the hammer device 1 by the impacts D of the impact mechanism 13 of the hammer device 1, since the radial projection 23 of the tool shank 20 strikes against the retaining cap 16 from the inside in the axial direction A along the longitudinal axis X and thereby in the axial direction A can be blocked along the longitudinal axis X.
  • the impact force storage element 18 is arranged along the longitudinal axis X as an extension of the impact force deflection element 15 past a tool 2 that is accommodated.
  • a distance e can be maintained between the impact force deflection element 15 and the impact force storage element 18 along the longitudinal axis X in that the retaining cap 16, which receives the impact force storage element 18 in a fixed manner, can be rotated or screwed around the longitudinal axis X by a rotary or screwing movement of preferably approx. 180° is moved relative to the housing body 10 along the longitudinal axis X.
  • the adjustable distance e between the impact force deflection element 15 and the impact force storage element 18 along the longitudinal axis X can correspond to the distance between the housing body 10 and the retaining cap 16 .
  • FIG 3 shows a detailed representation of the figure 1 with tool picked up 2.
  • figure 4 shows an enlarged view of the figure 3 .
  • the Figures 3 and 4 relate to the first exemplary embodiment of a hammer device 1 according to the invention figure 1 .
  • a situation is shown here for carrying out a prying blow shortly after an impact of impact mechanism 13 in axial direction A along longitudinal axis X the percussion mechanism 13 is already on the way back after the impact has been delivered.
  • a radially extending portion of the impact force redirecting member 15 in the counter-axial direction B along the longitudinal axis X is pressed against a radially inwardly extending projection of the housing body 10, which separates the percussion mechanism holder 12 from the tool holder 14 along the longitudinal axis X.
  • the impact force storage element 18, which is integrally accommodated in the retaining cap 16, is spaced along the longitudinal axis X by the adjustable distance e from the impact force deflection element 15 in such a way that touching contact can be avoided.
  • the kinetic energy of an impact D of the impact mechanism 13 in the axial direction A can be transmitted directly via the impact force deflection element 15 to an impact surface 22a of the impact end 22 of the tool 2 and introduced into a workpiece 3 without energy being introduced into the impact energy storage element 18 is coming.
  • the impact force storage element 18 can also be implemented to arrange the impact force storage element 18 within the retaining cap 16 so that it can move along the longitudinal axis X.
  • contact between the impact force deflection element 15 and the impact force storage element 18 can then occur during impact energy transmission, but due to the axial mobility of the impact force storage element 18 with the movement range e and due to the lack of axial support of the impact force storage element 18 on the retaining cap 16 no energy can be stored.
  • the impact force diversion element 15 and the impact force storage element 18 are in continuous contact and the radial projection 23 of the tool shank 20 of the tool 2 rests against the impact force storage element 18, so that the kinetic energy can be transmitted from the impact mechanism 13 via the impact force diversion element 15 to the tool 2 past in the axial direction A along the longitudinal axis X into the impact force storage element 18 and from there in the opposite axial direction B along the longitudinal axis X into the tool 2.
  • the impact force deflection element 15 has a contact surface 15a facing the impact force storage element 18 in the axial direction A along the longitudinal axis X, which at a correspondingly small distance e can be in touching contact with a corresponding first contact surface 18a of the impact force storage element 18. Force can be transmitted in the axial direction A along the longitudinal axis X via the contact between these two contact surfaces 15a, 18a.
  • the adjustable distance e between the impact force deflection element 15 and the impact force storage element 18 is occupied between these two contact surfaces 15a, 18a.
  • the radial projection 23 of the tool shank 20 has a corresponding contact surface 23a, which can be in touching contact with a corresponding second contact surface 18c of the impact force storage element 18 at a correspondingly small distance e. Force transmission in the opposite axial direction B can take place via the contact of these two contact surfaces 18c, 23a.
  • the contact surfaces 15a, 18a, 18c, 23a are designed in such a way that the respective kinetic energy can be transmitted safely and as gently as possible for the impact force deflection element 15, the impact force storage element 18 and the tool 2. As a result, correspondingly robust materials can be used for the contact partners.
  • the contact surfaces 15a, 18a, 18c, 23a can also be dimensioned to be correspondingly large. This can increase the longevity of the contact surfaces 15a, 18a, 18c, 23a.
  • the impact force diversion element 15 and/or the impact force storage element 18 are designed in such a way that they can be in touching contact with each other past the tool 2 at a correspondingly small distance e .
  • the impact force redirection element 15 extends by means of a side element 15b in the axial direction A along the longitudinal axis X with a radially larger area parallel to that part of the tool shank 20 which has the impact end 22 .
  • the side element 15b of the impact force deflection element 15 then extends in the axial direction A along the longitudinal axis X with a radially smaller area parallel to the part of the tool shank 20 which has the radial projection 23 .
  • the side element 15b of the impact force deflection element 15 protrudes in the axial direction A along the longitudinal axis X beyond the radial projection 23 and ends with its contact surface 15a.
  • the impact force storage element 18 is formed with a surface pointing in the opposite axial direction B along the longitudinal axis X, which forms the second contact surface 18c radially on the inside and the first contact surface 18a radially on the outside.
  • the side element 15b of the impact force deflection element 15 extends in the axial direction A along the longitudinal axis X only with the radially larger area of the first exemplary embodiment parallel to that part of the tool shank 20 which has the impact end 22, and then ends directly with its contact surface 15a .
  • a side element 18b of the impact force storage element 18 now extends in the opposite axial direction B along the longitudinal axis X, correspondingly parallel to that part of the tool shank 20 which has the chisel tip 21, cf. figure 2 , so that the same distance e as in the first embodiment between the two contact surfaces 15a, 18a of the two side elements 15b, 18b is reached.
  • the two contact surfaces 18a, 18c of the impact force storage element 18 are formed separately from one another.
  • the impact force deflection element 15 does not extend at all in the axial direction A along the longitudinal axis X parallel to that part of the tool shank 20 which has the radial projection 23 .
  • the side element 18b of the impact force storage element 18 extends far enough in the counter-axial direction B along the longitudinal axis X parallel to the tool 2 .
  • a guide element 19 for the tool insertion end 22a in the form of a chisel bushing 19 is arranged radially between the side element 18b of the impact force storage element 18 and the tool 2, which serves to guide the tool insertion end 22a.
  • the two contact surfaces 18a, 18c of the impact force storage element 18 are formed separately from one another.
  • the side surfaces 15b, 18b can be designed in the form of individual webs 15b, 18b, which are preferably provided in pairs. In the schematic sectional views of figures 1 and 3 to 12 a pair of side surfaces 15b, 18b can therefore be shown in each case, it being possible for the individual webs 15b, 18b to be arranged at a uniform distance from one another in the circumferential direction.
  • the webs 15b, 18b can be positioned in such a way that the contact surfaces 15a, 18a of the impact force deflection element 15 and of the impact force storage element 18 can touch one another along the longitudinal axis X.
  • the side surfaces 15b, 18b can each be in the form of a hexagonal or polyhedral radial body 15b, 18b, which is closed in the circumferential direction around the longitudinal axis X. This can also be done through the schematic sectional views of the figures 1 and 3 to 12 be shown.
  • the side surfaces 15b, 18b can be designed differently.
  • the impact force diversion element 15 can have a completely cylindrical side surface 15b and the side surface 18b of the impact force storage element 18 can be formed by at least one pair of webs 18b.
  • the radially larger area of the side element 15b of the impact force storage element 15 of the figure 3 be designed as a cylindrical body, which is adjoined by radially smaller webs 15b in the axial direction A along the longitudinal axis X.
  • the impact force diversion element 15 can have webs 15b as side elements 15b and the side element 18b of the impact force storage element 18 can be designed as a cylindrical body 18b.
  • the side surfaces 15b, 18b can be in the form of independent, detachable elements that can be used if necessary in order to enable the impact energy to be transferred from the impact force deflection element 15 to the impact force storage element 18.
  • figure 7 shows a schematic sectional view of the hammer device 1 according to the invention according to the first embodiment with tool 2 in a first step of a caulking blow.
  • figure 8 shows the representation of the figure 7 in a second step of the stem stroke.
  • figure 9 shows the representation of the figure 7 in a third step of the stem stroke.
  • the hammer device 1 is pressed against a workpiece 3 in the form of a rock 3 in the axial direction A along the longitudinal axis X by the force C of an operator.
  • the tool 2 within the hammer device 1 is pressed by the rock 3 against the impact force deflection element 15 and this is pressed against the separating element 14a.
  • the operator has to axially adjust the retaining cap 16, e.g. rotated it by approx.
  • figure 10 shows a schematic sectional view of the hammer device 1 according to the invention according to the first embodiment with tool 2 in a first step of a pulling blow.
  • figure 11 shows the representation of the figure 10 in a second step of the pull stroke.
  • figure 12 shows the representation of the figure 10 in a third step of the pulling stroke.
  • figure 13 shows the representation of the figure 10 in a fourth step of the pulling stroke.
  • the operator pulls the hammer device 1 away from the workpiece 3 as rock 3 with a force C′ in the opposite axial direction B along the longitudinal axis X, in which the tool 2 as a chisel 2 is stuck.
  • the radial projection 23 lies with its contact surface 23a, cf. figures 2 and 4 , on the corresponding second contact surface 18c of the impact force storage element 18, cf figure 4 , at.
  • This elastic storage of the kinetic energy leads to a deflection of the impact force storage element 18 in the axial direction A (not shown), so that a distance f' is set between the surface of the separating element 14a pointing in the axial direction A and the radially outer area of the impact force redirecting element 15 .

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

Claims (15)

  1. Dispositif de marteau (1), de préférence dispositif de marteau (1) à guidage manuel, comportant
    un mécanisme de percussion (13) qui est conçu pour pouvoir agir de manière percutante sur un outil (2), de préférence sur un burin (2), dans la direction axiale (A) le long de l'axe longitudinal (X), et au moins un élément d'accumulation de force de percussion (18) qui est conçu pour recevoir une force de percussion (D) du mécanisme de percussion (13) de manière à la stocker au moins partiellement dans la direction axiale (A) le long de l'axe longitudinal (X) et pour la transmettre à nouveau à l'outil (2) au moins partiellement en tant que force de percussion (D') du mécanisme de percussion (13) dans la direction axiale opposée (B) le long de l'axe longitudinal (X), caractérisé par
    un élément de déviation de force de percussion (15) qui est conçu et disposé ou peut être disposé dans le flux de force entre le mécanisme de percussion (13) et l'élément d'accumulation de force de percussion (18) de telle sorte que la force de percussion (D) du mécanisme de percussion (13) dans la direction axiale (A) le long de l'axe longitudinal (X) peut être transmise de manière à la stocker au moins partiellement à l'élément d'accumulation de force de percussion (18) en contournant l'outil (2) au moins partiellement, de préférence complètement.
  2. Dispositif de marteau (1) selon la revendication 1, caractérisé en ce que
    l'élément de déviation de force de percussion (15) est conçu pour recevoir la force de percussion (D) du mécanisme de percussion (13) dans la direction axiale (A) sur un côté dans la direction le long de l'axe longitudinal (X), et l'élément de déviation de force de percussion (15) est en outre conçu pour transmettre la force de percussion (D) du mécanisme de percussion (13) dans la direction axiale (A) à l'outil (2) et/ou à l'élément d'accumulation de force de percussion (18) sur le côté opposé dans la direction le long de l'axe longitudinal (X).
  3. Dispositif de marteau (1) selon la revendication 1 ou 2,
    caractérisé en ce que
    l'élément de déviation de force de percussion (15) et/ou l'élément d'accumulation de force de percussion (18) sont conçus, au moins dans certaines régions dans la direction le long de l'axe longitudinal (X), pour s'étendre au-delà de l'outil (2), de préférence parallèlement, au moins dans certaines régions.
  4. Dispositif de marteau (1) selon l'une des revendications précédentes,
    caractérisé en ce que
    l'élément de déviation de force de percussion (15) et/ou l'élément d'accumulation de force de percussion (18) présentent, au moins dans certaines régions, au moins une nervure (15b, 18b), de préférence une pluralité de nervures (15b, 18b), lesquelles s'étendent au-delà de l'outil (2), de préférence parallèlement, au moins dans certaines régions.
  5. Dispositif de marteau (1) selon la revendication 4, caractérisé en ce que
    l'élément de déviation de force de percussion (15) et/ou l'élément d'accumulation de force de percussion (18) présentent, au moins dans certaines régions, au moins une paire, de préférence une pluralité de paires, de nervures (15b, 18b) diamétralement opposées les unes aux autres par rapport à l'axe longitudinal (X), lesquelles s'étendent au-delà de l'outil (2), de préférence parallèlement, au moins dans certaines régions.
  6. Dispositif de marteau (1) selon l'une des revendications précédentes, caractérisé en ce que
    l'élément de déviation de force de percussion (15) et/ou l'élément d'accumulation de force de percussion (18) présentent, au moins dans certaines régions, au moins un corps (15b, 18b) fermé dans la direction circonférentielle autour de l'axe longitudinal (X), de préférence au moins un corps (15b, 18b) en forme d'anneau et/ou un corps (15b, 18b) polygonal, de préférence hexagonal, lequel s'étend au-delà de l'outil (2), de préférence parallèlement, au moins dans certaines régions.
  7. Dispositif de marteau (1) selon l'une des revendications précédentes, caractérisé en ce que
    l'élément de déviation de force de percussion (15) présente une surface de contact (15a) tournée vers l'élément d'accumulation de force de percussion (18) dans la direction le long de l'axe longitudinal (X), et
    l'élément d'accumulation de force de percussion (18) présente une première surface de contact (18a) tournée vers l'élément de déviation de force de percussion (15) dans la direction le long de l'axe longitudinal (X),
    dans lequel la surface de contact (15a) de l'élément de déviation de force de percussion (15) est conçue pour pouvoir transmettre la force de percussion (D) du mécanisme de percussion (13) dans la direction axiale (A) en touchant la première surface de contact (18a) de l'élément d'accumulation de force de percussion (18).
  8. Dispositif de marteau (1) selon la revendication 7, caractérisé en ce que
    l'élément d'accumulation de force de percussion (18) présente une seconde surface de contact (18c) tournée vers l'outil (2) dans la direction le long de l'axe longitudinal (X),
    dans lequel la seconde surface de contact (18c) de l'élément d'accumulation de force de percussion (18) est conçue pour pouvoir transmettre la force de percussion (D') du mécanisme de percussion (13) dans la direction axiale opposée (B) en touchant une surface de contact (23a) de l'outil (2), de préférence une surface de contact (23a) d'une saillie radiale (23) de l'outil (2).
  9. Dispositif de marteau (1) selon l'une des revendications précédentes, caractérisé en ce que
    l'élément d'accumulation de force de percussion (18) est conçu pour être espacé de l'élément de déviation de force de percussion (15) dans une première position dans la direction le long de l'axe longitudinal (X) de telle sorte que la force de percussion (D) du mécanisme de percussion (13) dans la direction axiale (A) ne peut pas être reçue, et
    l'élément d'accumulation de force de percussion (18) est en outre conçu pour être disposé à proximité de l'élément de déviation de force de percussion (15) dans une seconde position dans la direction le long de l'axe longitudinal (X) de telle sorte que la force de percussion (D) du mécanisme de percussion (13) dans la direction axiale (A) peut être reçue au moins partiellement, de préférence complètement, en provenance de l'élément de déviation de force de percussion (15).
  10. Dispositif de marteau (1) selon la revendication 9, caractérisé en ce que
    l'élément d'accumulation de force de percussion (18), de préférence conjointement avec un élément de retenue (16) recevant l'élément d'accumulation de force de percussion (18), peut être déplacé entre la première position et la seconde position dans la direction le long de l'axe longitudinal (X), de préférence au moyen d'un mouvement de rotation autour de l'axe longitudinal (X),
    dans lequel le mouvement de rotation peut être effectué de préférence sur moins d'un tour complet autour de l'axe longitudinal (X), de manière particulièrement préférée sur environ un demi-tour autour de l'axe longitudinal (X).
  11. Dispositif de marteau (1) selon l'une des revendications précédentes, caractérisé en ce que
    l'élément d'accumulation de force de percussion (18) est conçu pour être maintenu sur un corps de boîtier (10) du dispositif de marteau (1) au moyen d'un élément de retenue (16),
    dans lequel l'élément de retenue (16) ainsi que l'élément d'accumulation de force de percussion (18) sont conçus de manière à pouvoir être déplacés en translation par rapport au corps de boîtier (10) dans la direction le long de l'axe longitudinal (X), de préférence de manière à pouvoir tourner autour de l'axe longitudinal (X), et/ou
    dans lequel l'élément d'accumulation de force de percussion (18) est conçu de manière à pouvoir être déplacé en translation par rapport à l'élément de retenue (16) dans la direction le long de l'axe longitudinal (X), de préférence de manière à pouvoir tourner autour de l'axe longitudinal (X).
  12. Dispositif de marteau (1) selon l'une des revendications précédentes, caractérisé en ce que
    l'élément d'accumulation de force de percussion (18) est conçu de manière à se repositionner élastiquement, de préférence de manière à se repositionner élastiquement de manière incompressible,
    dans lequel l'élément d'accumulation de force de percussion (18) présente de préférence un corps élastomère (18), de manière particulièrement préférée est constitué d'un corps élastomère (18), et/ou présente de préférence un ressort métallique (18), de manière particulièrement préférée un ressort hélicoïdal métallique (18), de préférence est constitué de celui-ci.
  13. Système de marteau,
    comportant un dispositif de marteau (1) selon l'une des revendications 1 à 12, et
    comportant un outil (2),
    dans lequel l'outil (2) est conçu pour recevoir la force de percussion du mécanisme de percussion (13) du dispositif de marteau (1) dans la direction axiale (A), de préférence par l'intermédiaire d'une extrémité d'insertion d'outil (22) opposée axialement à une pointe d'outil (21), de manière particulièrement préférée par l'intermédiaire d'une extrémité d'insertion d'outil (22) d'une tige d'outil (20) opposée axialement à une pointe d'outil (21),
    dans lequel l'outil (2) présente au moins une saillie radiale (23), laquelle est conçue pour recevoir la force de percussion (D) du mécanisme de percussion (13) du dispositif de marteau (1) dans la direction axiale opposée (B), au moins partiellement en provenance de l'élément d'accumulation de force de percussion (18) du dispositif de marteau (1).
  14. Système de marteau selon la revendication 13, caractérisé en ce que
    la saillie radiale (23) présente, dans la direction le long de l'axe longitudinal (X), une surface de contact (23a) tournée vers l'élément d'accumulation de force de percussion (18) du dispositif de marteau (1), dans lequel la surface de contact (23a) de la saillie radiale (23) est conçue pour recevoir la force de percussion (D') du mécanisme de percussion (13) du dispositif de marteau (1) dans la direction axiale opposée (B) en provenance de l'élément d'accumulation de force de percussion (18) du dispositif de marteau (1).
  15. Système de marteau selon la revendication 13 ou 14, caractérisé en ce que
    l'outil (2) présente une extrémité d'outil (21) permettant d'usiner une pièce (3),
    dans lequel l'extrémité d'outil (21) est conçue de manière à pouvoir être remplacée.
EP17188210.3A 2017-08-28 2017-08-28 Dispositif à impact, de préférence dispositif à impact portable Active EP3450109B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP17188210.3A EP3450109B1 (fr) 2017-08-28 2017-08-28 Dispositif à impact, de préférence dispositif à impact portable
PCT/EP2018/072825 WO2019042869A1 (fr) 2017-08-28 2018-08-23 Dispositif de marteau, de préférence dispositif de marteau à guidage manuel

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP17188210.3A EP3450109B1 (fr) 2017-08-28 2017-08-28 Dispositif à impact, de préférence dispositif à impact portable

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EP3450109A1 EP3450109A1 (fr) 2019-03-06
EP3450109B1 true EP3450109B1 (fr) 2023-04-26

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EP4341047A1 (fr) * 2021-05-21 2024-03-27 Milwaukee Electric Tool Corporation Marteau burineur

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US1609136A (en) * 1924-06-07 1926-11-30 Chicago Pneumatic Tool Co Retainer for rivet-cutting tools
US1774905A (en) * 1927-11-30 1930-09-02 Cleveland Rock Drill Co Percussive tool
US1795306A (en) * 1929-07-06 1931-03-10 Ingersoll Rand Co Implement retainer
IT1406770B1 (it) * 2010-12-20 2014-03-07 Andrina Utensile di percussione per un martello demolitore o simile
PH22015000117U1 (en) * 2015-03-20 2017-03-15 John Romel G Bihasa Chipping bit
DE102016101675B4 (de) 2016-01-29 2017-08-31 Holger Zenz Hammereinrichtung

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WO2019042869A1 (fr) 2019-03-07

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