EP2512749A1 - Handwerkzeugmaschinenvorrichtung - Google Patents
HandwerkzeugmaschinenvorrichtungInfo
- Publication number
- EP2512749A1 EP2512749A1 EP10770795A EP10770795A EP2512749A1 EP 2512749 A1 EP2512749 A1 EP 2512749A1 EP 10770795 A EP10770795 A EP 10770795A EP 10770795 A EP10770795 A EP 10770795A EP 2512749 A1 EP2512749 A1 EP 2512749A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- spring
- absorber
- mass
- tool device
- guide surface
- 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.)
- Granted
Links
- 239000006096 absorbing agent Substances 0.000 claims abstract description 103
- 230000001133 acceleration Effects 0.000 description 5
- 239000011159 matrix material Substances 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 2
- 239000000356 contaminant Substances 0.000 description 2
- 238000013016 damping Methods 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 241000282376 Panthera tigris Species 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000009527 percussion Methods 0.000 description 1
- 230000010363 phase shift Effects 0.000 description 1
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
- B25D2217/00—Details of, or accessories for, portable power-driven percussive tools
- B25D2217/0073—Arrangements for damping of the reaction force
- B25D2217/0076—Arrangements for damping of the reaction force by use of counterweights
- B25D2217/0092—Arrangements for damping of the reaction force by use of counterweights being spring-mounted
Definitions
- the invention is based on a handheld power tool device according to the preamble of claim 1.
- the invention is based on a handheld power tool device, in particular for a rotary and / or chisel hammer, having at least one damper mass, a damper housing and at least one damper spring, wherein the damper spring is provided to couple the damper mass to two spring directions Support pages.
- the Tilgergeophen has at least one spring guide surface which guides the Tilgerfeder in at least one operating state in the spring direction.
- a "Schwingungstilgervoriques" is to be understood in particular a device which in at least one operating state, a force on a power tool housing and in particular at least generates a handle of a power tool, which counteracts a vibration in particular of the power tool housing.
- the Schwingungstilgervoriques allows an advantageous low-vibration operation of the power tool.
- the vibration damping device operates passively, that is, energy-free up to the vibration energy.
- the Schwingungstilgervortechnisch can be retrofitted to a hand tool.
- the Schwingungstilgervorides could be built into a hand tool and / or standard.
- a "absorber mass” is to be understood as a unit which is provided by an acceleration force and / or a deceleration force
- a “damper housing” is to be understood as meaning, in particular, a housing which in particular directly supports a force of the absorber spring
- the damper housing advantageously protects the absorber spring, the spring guiding surface and advantageously the damper mass in front of one
- the term "absorber spring” is to be understood as meaning a spring which is intended to transmit in particular directly to the absorber mass, which accelerates and / or retards the absorber mass
- the absorber spring is designed as a helical compression spring
- the Tilgerfeder could be designed as another torsion, bending, tension and / or gas spring appearing meaningful to the person skilled in the art. "Turning to two opposing sides in the spring direction” should be understood to mean that the Tilgerfeder in at least one Operating state causes a force in particular directly in the direction of the absorber mass on a first side and in at least one operating state on a second side opposite the first side causes a force, in particular directly in the direction of the absorber mass.
- a "spring direction” is to be understood as meaning at least one direction in which the absorber spring must be loaded in order to be able to store the most energy.advantageously, the absorber spring is elastically deformable in the spring direction by at least 25% of a length in the unloaded state "Provided” is to be understood in particular to be specially equipped and / or designed.
- a "spring guide surface” is to be understood as meaning a surface which is intended to exert a force on the absorber spring which is oriented perpendicular to the spring direction prevents the spring guide surface a resilient movement of the Tilgerfeder in a direction which is substantially different from the spring direction, that is, more than 15 degrees.
- the term "lead” is to be understood in particular to mean that the spring guiding surface is intended to prevent a deformation deviating from an intended deformation
- This can be achieved by an advantageously rigid connection between the absorber spring and the absorber housing, in particular by a substantially rectilinear force flow and by a large force-transmitting material cross-section
- high performance by a large stored in the absorber mass kinetic energy, for example m
- structurally simple particularly low friction values can be achieved.
- the spring guide surface encloses the absorber spring on a plane perpendicular to the spring direction by more than 45 degrees, whereby the Tilgerfeder is structurally simple reliable and advantageously a particularly low-friction design, in particular by a structurally simple advantageous tolerancing , is possible.
- the spring guide surface surrounds the Tilgerfeder by more than 90 degrees, more preferably of more than 185 degrees.
- the term "enclose” is to be understood in particular that the spring guide surface surrounds a projection surface center of a projection of the Tilgerfeder along the spring direction in an angular range of more than 45 degrees.
- the absorber mass and the absorber housing together enclose a spring area of more than 270 degrees, whereby the spring area and in particular a mass guiding surface can be structurally protected and advantageously encapsulated against contaminants.
- a "spring area” is to be understood as meaning, in particular, a room in the Tilgerfeder arranged in an operating condition and / or is advantageously movable.
- the space is limited at least by at least one spring guide surface and at least one spring support surface.
- the absorber housing and the absorber mass together enclose each point of the spring area by more than 270 degrees.
- the absorber housing and the absorber mass surround the spring area by more than 350 degrees, particularly advantageously by 360 degrees, that is to say completely.
- the Tilgergecher is at least partially formed integrally with a housing of the power tool.
- the absorber housing and the absorber mass advantageously surround the spring area on planes which are arranged perpendicularly and / or parallel to the spring direction.
- a power transmission from the absorber mass to the Tilgerfeder takes place in at least one operating state within the spring range.
- the absorber housing has a mass guide surface which guides the absorber mass in at least one operating state in the spring direction.
- a “mass guide surface” is to be understood as meaning, in particular, a surface of the absorber housing which is intended to exert a force perpendicular to the spring direction on the absorber mass to store linearly movable in the spring direction.
- the spring guide surface and in particular the mass-guiding surface are friction-reduced coated. Due to the mass-guiding surface of the absorber housing, a small number of components can be structurally achieved.
- the spring guide surface and the mass guide surface are at least partially disposed on an integrally formed region of the Tilgergeophuses, whereby design effort and components can be saved.
- An "integrally formed region” should be understood to mean, in particular, a region which has been machined out of a workpiece and / or is advantageously sprayed on a single piece in that the spring guiding surface and the mass guiding surface each form an outer surface of the region.
- the spring guide surface and the mass guide surface overlap at least partially, whereby a particularly small space requirement is possible.
- overlap is to be understood in particular that an area in a first operating state as
- Spring guide surface and acts in a deviating in particular from the first operating state second operating state as a mass-guiding surface.
- the Til- gergetude has at least one spring support surface of at least one
- shoulder is to be understood as meaning, in particular, a step which advantageously adjoins the spring guiding surface.
- the spring supporting surface has an angle of at least 45 degrees, advantageously at least, to the mass guiding surface 60
- the absorber mass is H-shaped.
- the term "H-shaped design" is to be understood as meaning that the absorber mass, viewed from at least one side, forms a projection surface which has an H-shaped form
- the absorber mass has at least one mirror axis which extend from a ground mass of the absorber mass perpendicular to the mirror axis away from the ground mass
- H-shaped absorber mass is a particularly small space requirement achievable.
- the Schwingungstilgervoriques has at least two Tilgerfedern, whereby a particularly large vibration reduction, in particular by low friction and a high inertia mass, can be achieved.
- the invention proceeds from a hand-held power tool having a hand-held power tool device, wherein all hand-held power tools appearing appropriate to the person skilled in the art, in particular impact drills, demolition hammers, rotary hammers, impact hammers, impact drills and / or advantageously drill and / or chisel hammers for operation with a hand tool device, would be conceivable, whereby a particularly convenient hand tool can be provided.
- FIG. 1 shows a hand tool with a hand tool machine device according to the invention, which has a Schwingungstilgervorraum,
- Fig. 2 is a plan view of the hand tool machine device of FIG.
- FIG. 3 shows a side view of the handheld power tool device of FIG. 1, FIG.
- FIG. 4 shows a partial section (A-A) in a front view of the hand-held power tool device from FIG. 1,
- Fig. 5 is a plan view of the hand tool machine device of FIG.
- FIG. 6 shows a side view of the hand-held power tool device from FIG. 1 in a deflected operating state
- FIG. 7 is a partial plan view of an alternative embodiment of a hand tool device according to the invention with a completely encapsulated spring area
- FIG. 8 shows a partial section (B-B) in a front view of the hand-held power tool device from FIG. 7.
- FIG. 1 shows a hand tool 36a, which is designed as a drill and chisel hammer.
- the hand tool machine 36a has a handheld power tool device 10a according to the invention, an insert tool attachment 38a, a handheld power tool housing 40a and a main handle 42a.
- the tool attachment 38a is in the main working direction 44a striking and rotationally driven.
- the main handle is arranged on an end of the portable power tool 36a facing away from the main working direction 44a of the tool attachment 38a and connected to the power tool housing 40a.
- the handheld power tool apparatus 10a is disposed between the insert tool fixture 38a and the main handle 42a. More precisely, the handheld power tool device 10a is arranged in a region of a percussion mechanism, not shown, of the handheld power tool 36a.
- the handheld power tool device 10a has a vibration absorber device 12a with an absorber mass 14a, a damper housing 16a and two absorber springs 18a, 20a.
- the absorber mass 14a is H-shaped (FIG. 2).
- the Tilgerfedern 18a are each arranged between two projections 46a of the absorber mass 14a.
- the projections 46a are integrally formed on sides of a matrix 48a of the absorber mass 14a, which run substantially parallel to the spring direction 22a. Furthermore, the projections 46a are cuboid.
- the Tilgerfedern 18a, 20a support the absorber mass 14a at a deflection of the absorber mass 14a in the main working direction 44a on a seen in the main working direction 44a front side ( Figure 5 and Figure 6). In a deflection of the absorber mass 14a against the main working direction 44a, the Tilgerfedern 18a, 20a support the absorber mass 14a on a seen in the main working direction 44a rear side.
- the main working direction 44a is aligned parallel to the spring direction 22a.
- the Tilgerfedern 18 a, 20 a support the absorber mass 14 a in two different operating states on two opposite sides in the spring direction 22 a.
- the absorber mass 14a presses the Tilgerfedern 18a, 20a together.
- the absorber mass 14a biases the Tilgerfedern 18a, 20a.
- part of a kinetic energy of the portable power tool 36a is transmitted to the absorber housing 16a via the handheld power tool housing 40a.
- the absorber housing 16a transmits the part of the kinetic energy to the Tilgerfedern 18a, 20a. Because the absorber mass 14a is movably mounted in the absorber housing 16a, the absorber mass 14a remains unaccelerated.
- the Tilgerfedern 18a, 20a are compressed and store the part of the kinetic energy as spring energy.
- the Tilgerfedern 18a, 20a return the energy over a direction opposite to the main working direction 44a side to the absorber mass 14a by accelerating the absorber mass 14a against the main working direction 44a.
- the acceleration energy previously stored in the Tilgerfedern 18a, 20a is stored almost completely in a movement of the absorber mass 14a opposite the main operating direction 44a.
- the Tilgerfedern 18a, 20a delay the absorber mass 14a by causing a force on a main working direction in the direction 44a side on the absorber mass 14a in the main working direction 44a.
- the next acceleration against the main working direction 44a occurs at this time.
- an acceleration of the portable power tool 36a against the main working direction 44a is reduced. Vibration of the power tool 36a is thus reduced.
- the idler springs 18a, 20a are substantially relaxed.
- the absorber mass 14a and the Tilgerfedern 18a, 20a together form a vibratory system.
- the absorber mass 14a is excited to vibrate by a movement of the portable power tool housing 40b.
- the system causes in a designated frequency range forces that counteract vibration of the power tool housing 40a.
- the absorber mass 14a oscillates with a phase shift of approximately 180 degrees to the handheld power tool housing 40a.
- the damper housing 16a is partially formed integrally with the power tool housing 40a and partially screwed tightly to the power tool housing 40a. In this case, a subdivision of the absorber, not shown in more detail, runs. Housing 16a at one of the expert appears to be reasonable point, but preferably at least partially perpendicular to a spring direction 22a.
- the absorber housing 16a has two spring guide surfaces 24a.
- the spring guide surfaces 24a are surfaces of the damper housing 16a, which adjoin two tubular spring portions 26a of the vibration absorber device 12a. Further, the spring guide surfaces 24a are aligned parallel to the spring direction 22a.
- the spring guide surfaces 24a have a non-illustrated friction-reducing coating. In each case one of the spring guide surfaces 24a leads in each case one of the Tilgerfedern 18a, 20a during operation in the spring direction
- the Tilgerfedern 18a, 20a are arranged in an operational state in the spring portions 26a.
- the spring guide surfaces 24a respectively enclose one of the idler springs 18a, 20a on a plane oriented perpendicular to the spring direction 22a by about 315 degrees.
- the absorber mass 14a and the absorber housing 16a jointly surround the spring portions 26a in a deflected operating state by more than 270 degrees. In an undeflected operating condition, the absorber mass 14a and the absorber housing 16a completely surround the spring area 26a, that is, the spring area 26a is encapsulated against contaminants.
- the absorber housing 16a has two openings 50a between a space 52a, in which the basic mass 48a of the absorber mass 14a is movable, and the spring portions 26a.
- the openings 50a are formed substantially rectangular.
- Parallel to the spring direction 22a extending surfaces of the apertures 50a have mass guide surfaces 28a.
- the mass guide surfaces 28a guide the absorber mass 14a during operation in the spring direction 22a.
- mass guide surfaces 28a are formed by a portion of the outer surfaces adjacent to the tubular spring portions 26a of the vibration absorber device 12a. These mass guide surfaces 28a are arranged on a side of the spring regions 26a facing away from the basic mass 48a. In these areas, the spring guide surfaces 24a and the mass guide surfaces 28a overlap. Further, the spring guide surfaces 24a and the mass guide surfaces 28a in this area and in other areas on an integrally formed portion of the Tilgergephaseuses 16a arranged.
- the absorber housing 16a has four spring support surfaces 30a, which are formed by four shoulders 32a, 34a.
- the shoulders 32a, 34a are arranged on two spring-side 22a sides of the spring guide surface 24a adjacent to the spring guide surface 24a. They extend perpendicular to the spring direction 22a.
- the paragraphs 32a, 34a connect the spring guide surface 24a with the mass guide surface 28a.
- FIG. 7 shows a partial plan view of a handheld power tool device 10b with at least one vibration absorber device 12b. The partial plan view is cut along a not shown symmetry plane.
- the Schwingungstilgervoriques 12b has a damping mass 14b, a Tilgergephaseuse 16b and two Tilgerfedern 18b, 20b.
- the Tilgerfedern 18b, 20b support the absorber mass 14b on two opposite sides in the spring direction 22b.
- Tilgergepuruse 16b has for each Tilgerfeder 18b, 20b each have a spring guide surface 24b, which guides the Tilgerfedern 18b, 20b during operation in the spring direction 22b.
- the spring guide surfaces 24b enclose the Tilgerfedern 18b, 20b on all
- the absorber housing 16b has two openings 50b between a space 52b, in which a matrix 48b of the absorber mass 14b is movable, and per absorber spring 18b each have a spring portion 26b of the Schwingungstilgervorides 12b.
- the openings 50b have a cross-section perpendicular to the spring direction 22b, which is substantially is oval ( Figure 8).
- Mass guide surfaces 28b of the damper housing 16b are formed as arranged in the openings 50b sidewalls. Other mass guide surfaces 28b overlap with the spring guide surfaces 24b.
- the absorber mass 14b has the substantially cuboidal matrix 48b and four L-shaped projections 46b.
- the projections 46b are integrally formed on sides 56b of the matrix 48b, which face the absorber spring 18b. More specifically, they are formed on the sides 56b in the spring direction 22b outside.
- the projections 46b pass through the openings 54b of the damper housing 16b in the spring direction 22b. In this case, the projections 46b completely fill the openings 54b on a plane which is aligned perpendicular to the spring direction 22b. As a result, it is possible to dispense with a housing element which protects against contamination.
- a lubricant is particularly advantageously protected on the guide surfaces 24b, 28b.
- the Tilgerfeder 18b supports the absorber mass 14b.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Percussive Tools And Related Accessories (AREA)
- Portable Nailing Machines And Staplers (AREA)
- Auxiliary Devices For Machine Tools (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102009054708A DE102009054708A1 (de) | 2009-12-16 | 2009-12-16 | Handwerkzeugmaschinenvorrichtung |
PCT/EP2010/065623 WO2011072910A1 (de) | 2009-12-16 | 2010-10-18 | Handwerkzeugmaschinenvorrichtung |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2512749A1 true EP2512749A1 (de) | 2012-10-24 |
EP2512749B1 EP2512749B1 (de) | 2020-02-05 |
Family
ID=43415948
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP10770795.2A Active EP2512749B1 (de) | 2009-12-16 | 2010-10-18 | Handwerkzeugmaschinenvorrichtung |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP2512749B1 (de) |
CN (1) | CN102666028B (de) |
DE (1) | DE102009054708A1 (de) |
RU (1) | RU2012129830A (de) |
WO (1) | WO2011072910A1 (de) |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1845825A (en) * | 1927-07-22 | 1932-02-16 | Chicago Pneumatic Tool Co | Spring handle attachment for rock drills |
US3845827A (en) * | 1971-08-05 | 1974-11-05 | Stihl Maschf Andreas | Portable implement,especially motor chain saw |
EP1415768A1 (de) * | 2002-10-31 | 2004-05-06 | Atlas Copco Electric Tools GmbH | Schwingungstilger |
DE102007000056A1 (de) * | 2007-01-31 | 2008-09-18 | Hilti Aktiengesellschaft | Schwingungstilger für Handwerkzeugmaschine |
DE102007000057B4 (de) * | 2007-01-31 | 2010-07-08 | Hilti Aktiengesellschaft | Schwingungstilger für Handwerkzeugmaschine |
DE102007000837A1 (de) * | 2007-10-09 | 2009-04-16 | Hilti Aktiengesellschaft | Handwerkzeugmaschine mit Schwingungsausgleichsmasse |
-
2009
- 2009-12-16 DE DE102009054708A patent/DE102009054708A1/de not_active Withdrawn
-
2010
- 2010-10-18 CN CN201080057230.1A patent/CN102666028B/zh not_active Expired - Fee Related
- 2010-10-18 WO PCT/EP2010/065623 patent/WO2011072910A1/de active Application Filing
- 2010-10-18 RU RU2012129830/02A patent/RU2012129830A/ru not_active Application Discontinuation
- 2010-10-18 EP EP10770795.2A patent/EP2512749B1/de active Active
Non-Patent Citations (1)
Title |
---|
See references of WO2011072910A1 * |
Also Published As
Publication number | Publication date |
---|---|
CN102666028B (zh) | 2016-04-13 |
EP2512749B1 (de) | 2020-02-05 |
CN102666028A (zh) | 2012-09-12 |
DE102009054708A1 (de) | 2011-06-22 |
RU2012129830A (ru) | 2014-01-27 |
WO2011072910A1 (de) | 2011-06-23 |
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