EP2247413A1 - Schwingungsentkoppelter handgriff - Google Patents
Schwingungsentkoppelter handgriffInfo
- Publication number
- EP2247413A1 EP2247413A1 EP09710153A EP09710153A EP2247413A1 EP 2247413 A1 EP2247413 A1 EP 2247413A1 EP 09710153 A EP09710153 A EP 09710153A EP 09710153 A EP09710153 A EP 09710153A EP 2247413 A1 EP2247413 A1 EP 2247413A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- handle
- handle according
- elastic
- fastening
- grip
- 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
- 238000013016 damping Methods 0.000 claims abstract description 58
- 239000013013 elastic material Substances 0.000 claims description 20
- 239000011148 porous material Substances 0.000 claims description 13
- 230000009471 action Effects 0.000 abstract description 6
- 230000006835 compression Effects 0.000 description 6
- 238000007906 compression Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 6
- 238000011161 development Methods 0.000 description 5
- 230000018109 developmental process Effects 0.000 description 5
- 238000003780 insertion Methods 0.000 description 5
- 230000037431 insertion Effects 0.000 description 5
- 230000033001 locomotion Effects 0.000 description 5
- 230000008901 benefit Effects 0.000 description 4
- 238000012986 modification Methods 0.000 description 4
- 230000004048 modification Effects 0.000 description 4
- 230000007704 transition Effects 0.000 description 4
- 238000004026 adhesive bonding Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000002238 attenuated effect Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 229920001971 elastomer Polymers 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- VCGRFBXVSFAGGA-UHFFFAOYSA-N (1,1-dioxo-1,4-thiazinan-4-yl)-[6-[[3-(4-fluorophenyl)-5-methyl-1,2-oxazol-4-yl]methoxy]pyridin-3-yl]methanone Chemical compound CC=1ON=C(C=2C=CC(F)=CC=2)C=1COC(N=C1)=CC=C1C(=O)N1CCS(=O)(=O)CC1 VCGRFBXVSFAGGA-UHFFFAOYSA-N 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000000806 elastomer Substances 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 238000010409 ironing Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000013507 mapping Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000012549 training Methods 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
- 238000004073 vulcanization Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25F—COMBINATION OR MULTI-PURPOSE TOOLS NOT OTHERWISE PROVIDED FOR; DETAILS OR COMPONENTS OF PORTABLE POWER-DRIVEN TOOLS NOT PARTICULARLY RELATED TO THE OPERATIONS PERFORMED AND NOT OTHERWISE PROVIDED FOR
- B25F5/00—Details or components of portable power-driven tools not particularly related to the operations performed and not otherwise provided for
- B25F5/006—Vibration damping means
-
- 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
- B25D17/04—Handles; Handle mountings
- B25D17/043—Handles resiliently mounted relative to the hammer housing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25F—COMBINATION OR MULTI-PURPOSE TOOLS NOT OTHERWISE PROVIDED FOR; DETAILS OR COMPONENTS OF PORTABLE POWER-DRIVEN TOOLS NOT PARTICULARLY RELATED TO THE OPERATIONS PERFORMED AND NOT OTHERWISE PROVIDED FOR
- B25F5/00—Details or components of portable power-driven tools not particularly related to the operations performed and not otherwise provided for
- B25F5/02—Construction of casings, bodies or handles
- B25F5/025—Construction of casings, bodies or handles with torque reaction bars for rotary tools
- B25F5/026—Construction of casings, bodies or handles with torque reaction bars for rotary tools in the form of an auxiliary handle
-
- 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
- B25D2250/371—Use of springs
-
- 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
- B25D2250/381—Leaf springs
Definitions
- the invention relates to a vibration-decoupled handle, in particular a vibration-decoupled auxiliary handle for a hand tool and a hand tool with a vibration-decoupled handle, preferably a vibration-decoupled auxiliary handle according to the preamble of the independent claims.
- a vibration-decoupled auxiliary handle designed as an ironing handle has a mounting portion which is connected to a grip portion via a vibration-damping, elastic material.
- the elastic material forms at least in the region of the connection, the surface of the auxiliary handle.
- the grip region and the attachment region are connected to one another by the elastic material such that a further connection means is dispensed with.
- the handle according to the invention in particular additional handle with the features of claim 1 has the advantage that the handle element has a connecting element which surrounds the fastening element radially.
- the connecting element is rigidly connected to the handle element, preferably embodied integrally therewith.
- the enclosure may in particular be designed so that the grip element in a Circumferential direction around the fastening element is movable, in particular pivotable, but without being removable from the fastening element in the radial direction.
- a further advantage is to be considered that the radially enclosing arrangement of a connecting element to the fastener allows a convenient arrangement, in particular receiving a damping device for damping a movement of the handle member relative to the fastener.
- An advantageous embodiment of a damping device of a handle according to the invention comprises at least one elastic element.
- the elastic element has in particular a spring element and / or a rubber-elastic material and / or a porous material.
- the elastic element consists essentially of a rubber-elastic material and / or a porous material.
- a particularly compact embodiment of a damping device is the
- Damper disposed between an inner circumferential surface of the connecting element and an outer circumferential surface of the fastening element.
- the inner circumferential surface and the outer circumferential surface are operatively connected to one another by the damping device.
- the elastic element has a rubber-elastic material, which is vulcanized or adhesively bonded to the inner lateral surface of the connecting element and / or the outer lateral surface of the fastening element.
- a possible uniform effect of the handle according to the invention provides at least one, preferably two radially projecting bearing disks.
- the contact disks are arranged on the fastening element in such a way that they axially surround a radial enclosing region of the fastening element.
- the contact disks extend in a radial extent beyond an outer diameter of the outer lateral surface of the fastening element.
- the contact disks are made in one piece with the fastening element.
- the elastic element is arranged between the system disks.
- the elastic element can be supported on the system disks.
- a particularly comfortable embodiment of a handle according to the invention is achieved by a bow-shaped design of the grip element.
- the execution as a bar handle due to the larger forces occurring advantageous.
- the training as a strap handle also allows a comfortable working posture of the operator, since the tool can be guided laterally, without twisting the hand of the operator is necessary.
- a good vibration damping can be achieved through the closed frame of the auxiliary handle. If the bow-shaped grip element has connecting elements at its two end regions which radially surround the fastening element, a uniform force distribution is achieved.
- connection areas are substantially the same, preferably identical.
- the handle element is designed to be pivotable relative to the fastener.
- an actuating element comprehensive locking device is provided, with which the grip element can be fixed in a selectable pivot position. By actuating the actuating element by an operator, the locking device can be released and fixed again.
- the selected pivot position defines a rest position of the handle member relative to the fastener.
- the damping device of the handle according to the invention allows an elastic deflection of the grip element from this rest position.
- a particularly simple embodiment of a locking device has a toothing.
- the elastic deflection of the pivoting position is limited starting from the rest position by a limiting means to an angular range W.
- the elastic deflection of the pivotal position, starting from the rest position in one direction is greater than in the corresponding opposite direction.
- the hand tool is pressed by the operator by means of the handle according to the invention against a workpiece.
- the direction of the contact pressure defines a printing direction.
- the grip element is loaded in this working state in the pressure direction and deflected relative to the fastening element. In order to effectively damp vibrations, the elastic deflection is preferably desired in this printing direction.
- the hand tool is lifted by the operator from the workpiece. For this purpose, the operator pulls the power tool against the pressure direction of the workpiece away, whereby a pulling direction is defined.
- the handle element is loaded in the pulling direction.
- Removing the power tool from the workpiece as low as possible to spend forces is preferably to ensure that the elastic deflection in the pulling direction is small, preferably negligible, ideally equal to zero.
- a particularly versatile and comfortable embodiment of a handle according to the invention, in particular an additional handle according to the invention provides a
- Fixing device for releasably fixing the handle to a machine housing of the power tool before.
- the fixing device is connected to the fastening element.
- the fixing device can allow a, in a circumferential direction on the machine housing selectable orientation of the handle relative to the machine housing, in particular a machine axis, which further increases the comfort for the operator.
- the fixing device allows usability of the handle according to the invention on various hand tool machines by exchange.
- the fixing device can be closed and opened via the actuating element.
- the fixing device comprises a clamping band, with which the handle can be fixed to the hand tool.
- tensioning band has recesses which interact with the toothing, a joint actuation of locking device and fixing device is implemented in a particularly simple manner.
- the fixing device comprises a clamping screw
- the actuating element is designed substantially as a clamping nut.
- Fig. 1 is a perspective view of a hammer drill with an additional handle according to the invention
- Fig. 2 is a side view of a first embodiment of an additional handle according to the invention
- 3a and 3c each show a side view of a second or third embodiment of an auxiliary handle according to FIG. 2 with a first or second restriction means for limiting the elastic deflection from the rest position of the grip region
- 3b and 3d each show a detailed view of the first and second restriction means in the direction B-B
- 4a to 4d are sectional views along the line A-A of FIG. 2 of the connecting portion of a fourth embodiment with different damping devices with a spring element
- Fig. 4b are sectional views taken along the line A-A of FIG. 2 of the connecting portion of a fifth embodiment with different damping devices with a spring element
- Fig. 4c are sectional views along the line A-A according to FIG. 2 of the
- FIG. 4d Connecting portion of a sixth embodiment with different damping devices with a spring element Fig. 4d are sectional views taken along the line A-A of FIG. 2 of the
- Fig. 5a is a sectional view taken along the line AA of FIG. 2 of the connecting portion of an eighth embodiment with a damping device with a rubber-elastic material - D -
- Fig. 5b is a sectional view taken along line A-A of Fig. 2 of the connecting portion of a ninth embodiment with a damping device with a porous material
- 5c shows a sectional view along the line A-A according to FIG. 2 of the connection region of a tenth embodiment with a damping device with an internal restriction means for limiting the elastic deflection from the rest position of the grip region
- Fig. 6a is a sectional view taken along the line A-A of FIG. 2 of the connecting portion of an eleventh embodiment with a, comprising an air spring damping device
- Fig. 7a is a sectional view taken along line A-A of Fig. 2 of the connecting portion of a thirteenth embodiment with a damping device with a porous material and lamellar transmission means
- Fig. 7b shows a damping device similar to Fig. 7a of a fourteenth
- Fig. 1 shows a hammer drill 1 as an example of a hand tool with a
- Machine housing 2 a used in a tool holder 3 insert tool 4, which defines a machine axis 5, and one, in a front portion 6 of the machine housing 2 as an additional handle 10 formed according to the invention handle.
- FIG. 2 shows a first exemplary embodiment of a handle designed as an auxiliary handle 10, as used in FIG. 1, in a lateral sectional view with a fastening element 12 and a grip element 14.
- the fastening element 12 has two partial elements 12a, 12b
- the grip element 14 is bow-shaped and has two end portions 16a, 16b.
- Each end region 16a, 16b comprises a connecting element 18a, 18b, which radially encloses a partial region 19a, 19b of a partial element 12a, 12b as a radial enclosing region of the fastening element 12.
- the radial enclosure in the end regions 16a, 16b can best be seen in FIG. 4a.
- the auxiliary handle 10 further comprises a locking device 20 and a fixing device 22, which are arranged on the fastening element 12 of the auxiliary handle 10 and connected thereto.
- the locking device 20 and the fixing device 22 are enclosed by the two partial elements 12a, 12b of the fastening element 12.
- the fastening element 12 comprises a fastening sleeve 24a, 24b in each end region 16a, 16b.
- the fastening sleeves 24a, 24b are surrounded by the respective associated connecting element 18a, 18b so that in each case a radial space 26a, 26b is formed.
- a damping device 28a, 28b is provided in each of these radial spaces 26a, 26b.
- the fastening sleeves 24a, 24b are each provided with an inner bore in the present example.
- the inner bores are coaxially oriented and serve to receive a clamping screw 30.
- the clamping screw 30 extends through the entire fastening element 12 and is received on its threaded side by a clamping nut 32 which is received in a locking knob 34 and rotatably connected thereto.
- the locking knob 34 thus forms an actuating element 36.
- the clamping screw 30 is supported with its head via a contact disk 37 on the fastening sleeve 24a of the end portion 16a.
- the actuating element 36 is supported in the end region 16b directly on the mounting sleeve 24b.
- a corresponding contact washer 37 is also provided in this end region 16b. It is also possible to form the contact disks 37 on the fastening sleeves 24a, 24b, in particular in each case in one piece with them. In an alternative embodiment, the support can also be made directly on the end faces of the sleeves, as shown by way of example in the end region 16b.
- the locking device 20 comprises a toothing 38a, 38b provided on each fastening sleeve 24a, 24b.
- the teeth 38a, 38b are formed in the present example on a perpendicular to the clamping screw 30 oriented, inner end face of the mounting sleeves 24a, 24b.
- the fixing device 22 comprises in the present example, a clamping band 40.
- the auxiliary handle 10 can be attached to a machine housing 2 of a hand tool, not shown here and fixed.
- the clamping band In its clamping region 42, the clamping band is provided with two clamping jaws 44a, 44b.
- the clamping band 40 can be received in correspondingly provided, not shown here, receiving openings in the clamping jaws 44a, 44b.
- the clamping jaws 44a, 44b may also be formed on the clamping band 40.
- the clamping jaws 44a, 44b each have a bore for receiving the clamping nut 30.
- the clamping backbones 44a, 44b each have depressions 46a, 46b.
- the depressions 46a, 46b interact with the teeth 38a, 38b of the fastening sleeves 24a, 24b in such a way that the fastening sleeves 24a, 24b are pivoted about the clamping screw 30 as a pivot axis 48 with respect to an orientation of the clamping band and locked in the selected pivoting position by tightening the clamping nut 32 can be.
- a circumferential position of the auxiliary handle 10 are changed relative to the machine housing.
- the auxiliary handle 10 is fixed in the new circumferential position.
- a grip position of the grip element 14 can thus be optimally adapted to a work situation in two axes, so that the operator can comfortably guide the handheld power tool.
- the abutment disc 37 ensures that no clamping forces 50a, 50b act on the damping devices 28a, 28b, so that their effectiveness does not depend on the currently applied tensioning forces 50a, 50b. Regardless of the clamping force 50a, 50b as well as the pivoting and circumferential position of the handle member 14, the damping devices 28a, 28b unfold their effects, so that occurring vibrations of the machine housing of the power tool largely independent of pivot and circumferential position of the auxiliary handle 10 damped on the handle member 14 are transmitted.
- the damping devices 28a, 28b are designed so that the handle element 14, in particular in a working state in which the hand tool is pressed against the same by the operator with an insert tool for machining a workpiece, is largely isolated from the vibrations.
- a surface of the grip member 14 for improving the vibrations is largely isolated from the vibrations.
- Damping properties and comfort of use partially or completely be provided with an elastic material, in particular an elastomer and / or a porous foam and / or an elastic fabric.
- FIGS. 3 a to 3 d show two further developments of the auxiliary handle from FIG. 2.
- 3a and 3b show a second embodiment
- FIGS. 3c and 3d show a third embodiment of an auxiliary handle 10 in which a range of action of the damping devices 28a, 28b is limited to a range of motion, in particular an angle range W in the pivoting direction about the rest position.
- the same reference numerals are used for the same elements.
- FIG 3a shows a side view of an auxiliary handle 10, the handle element 14 of which at its end portions 16a, 16b oriented towards the fastening element 12, parallel to a handle portion 52 of the handle member 14 inwardly oriented, wedge-shaped stop projections 54a, 54b has.
- the fastening sleeves 24a, 24b have radially oriented abutment recesses 56a, 56b in their cylindrical regions which carry the toothings 38a, 38b.
- the stop extensions 54a, 54b project with their fastening element 12 oriented free end in this stop recesses 56a, 56b. This can be seen particularly well in Fig. 3b, which shows a sectional view along the line B - B of Fig. 3a.
- the abutment extensions 54a, 54b have two contact surfaces 58a, 59a, 58b, 59b along a longitudinal extent extending parallel to the pivot axis 48.
- the abutment recesses 56a, 56b are distinguished by two abutment surfaces 60a, 61a, 60b, 61b extending parallel to the pivot axis 48, which interact with the respective abutment surfaces 58a, 59a, 58b, 59b such that a
- Pivoting movement of the grip element 14, in particular a deflection of the grip element 14 from the rest position to the angle range W is limited.
- Each pair of abutment extension 54a, 54b and abutment recess 56a, 56b acts as a limiting means 62a, 62b, by which the elastic deflection of the pivot position is limited starting from the rest position.
- a hand tool in particular a drill and / or chisel hammer occur at least three different operating conditions, which is supported by an advantageous development of the handle according to the invention.
- the handle In the working state, the handle is loaded by the operator in a pressure direction RD on the grip element 14, which is determined by a pressing of the insert tool against the workpiece.
- vibrations occur in the machine housing due to the effects of a drive device arranged in the machine housing for driving the insert tool and / or repercussions of a working process between the insert tool and the workpiece can be transferred to the handle.
- a transition state In a second operating state, which results in the transition from the working state to an idle state, and is referred to as a transition state, the hand tool is removed or released by a, applied by the operator on the handle tensile force from the workpiece.
- the direction of the tensile force can analogously be referred to as the pulling direction RZ on the handle element.
- the limiting means 62a, 62b of the auxiliary handle 10 are designed so that the elastic deflection of the pivot position starting from the rest position in one direction, preferably the pressure direction RD on the handle element, is greater than in an opposite direction, preferably the pulling direction RZ on handle element.
- the stop extension 54a, 54b is arranged asymmetrically in the angular range W of the stop recess 56a, 56b.
- the abutment surface 59a, 59b lying in the direction of pressing include an angle WD with the abutment surface 61a, 61b in the rest position shown.
- the oriented in the pulling direction abutment surface 58a, 58b include an angle WZ with the abutment surface 60a, 60b.
- the angle WD is made larger than the angle WZ.
- the angle WZ is very small, preferably chosen to be almost equal to zero.
- 3c and 3d show another embodiment of an additional handle 10 with a limiting means 62 for limiting the elastic deflection.
- stop extensions 54a ', 54b' are provided on the connecting elements 18a, 18b.
- these stop projections 54a ', 54b' are arranged on the side facing away from the grip element 14 or the tension band facing side of the connecting elements 18a, 18b.
- the stop projections 54a ', 54b' are as
- Hollow cylinder segments executed which extend parallel, preferably coaxially to the pivot axis 48 in the direction of the clamping jaws 44a, 44b.
- the fastening sleeves 24a, 24b each have a stop recess 56a ', 56b' which receive the stop projections 54a ', 54b', in particular in the circumferential direction. This can be seen particularly well in Fig. 3d.
- Analogous to the embodiment of FIG. 3b are at the abutment extensions 54a ', 54b' contact surfaces 58a ', 59a', 58b ', 59b' and to the Stop recesses 56a ', 56b' abutment surfaces 60a ', 61a', 60b ', 61b'.
- two different angles WD, WZ between the surface pairings of abutment surface 58a ', 58b' and abutment surface 60a ', 60b' or abutment surface 59a ', 59b' and abutment surface 61a ' are also formed here.
- '61b' formed such that in the printing direction RD on the handle member, a greater elastic deflection can be made from the rest position as in the direction of pull RZ on the handle element.
- FIGS. 4 a to 4 d Four exemplary embodiments of a damping device 28 with an elastic element 64 are shown in FIGS. 4 a to 4 d.
- the elastic element 64 is designed as a spring element 66 in the exemplary embodiments of FIGS. 4 a to 4 d.
- the illustrations of FIGS. 4a to 4c show sectional views of the handle according to the invention along the line A-A from FIG. 2.
- Fig. 4a the end portion 16 of a fourth embodiment with the connecting element 18 is shown, which surrounds the fastening element 12 radially.
- a gap 67 which extends between the fastening element 12 and the connecting element 18, the damping device 28 is arranged.
- the Damping device 28 comprises a designed as a spring element 66 elastic element 64, which is designed as a leaf spring 68.
- a radially inwardly oriented first hook element 71 is provided on an inner circumferential surface 70 of the connecting element 18.
- a radially outwardly oriented second hook element 73 is provided on an outer lateral surface 72.
- the leaf spring 68 is hooked with its first, designed as a radially outwardly directed hook end 74 on the first hook member 71.
- the second, designed as a radially inwardly directed hook end 75 of the leaf spring 68 is hooked to the second hook member 73.
- the leaf spring 68 extends radially about the fastening element 12 between its first end 74 and its second end 75. In the present example, in the rest position of the grip element 14 shown here, the leaf spring 68 completely encloses the fastening element 12 approximately once.
- the leaf spring 68 resets the grip element 12. If vibrations occur on the machine housing during operation of the handheld power tool, these are damped by the leaf spring 68 against the grip element 12 transfer.
- Fig. 4b is the end portion 16 of a fifth embodiment with a, a
- Spring element 66 comprising damping device 28 shown.
- the spring element 66 is designed as a helical compression spring 76.
- the connecting element 18 is provided on its inner circumferential surface 70 with a first, radially inwardly directed support element 77 and the fastening element 12 on its outer lateral surface 72 with a second, radially outwardly directed, support element 78.
- the support elements 77, 78 each have a contact surface 79, 80, which are oriented in the circumferential direction.
- the helical compression spring 76 is supported with its ends on a respective contact surface 79, 80.
- the two support elements 77, 78 are arranged adjacent to one another, so that the helical compression spring 76 almost encloses the fastening element 12 in the rest position of the grip element 14.
- the two support elements 77, 78 executed radially overlapping, so that they act as a limiting means 62 at the same time.
- a deflection of the grip element 14 in the pulling direction RZ is limited to a small angle WZ.
- the angle is WZ - o -
- the helical compression spring 76 acts on the grip element 14 to damp vibrations which, starting from the machine housing, are transferred almost undamped to the fastening element 12.
- Fig. 4c shows a further embodiment variant with a helical tension spring 82 as a spring element 66 as a sixth embodiment of a handle according to the invention.
- the helical tension spring 82 has two end regions 83, 83 '.
- the hook or support elements 71, 72, 77, 78 each have a receiving element.
- an end portion 83, 83 'of the coil spring 82 is received and connected to the respective hook or support members 71, 72, 77, 78.
- the receiving elements as
- Receiving holes 84, 85 executed.
- the end regions 83, 83 'of the helical tension spring 82 are hook-shaped, received in the receiving bores 84, 85 and hooked to the hook or support elements 71, 72, 77, 78. In a deflection of the handle member 14 from the rest position of this is offset by the coil spring 82 in the rest position.
- the mode of action is therefore analogous to the embodiments of FIGS. 4a and 4b.
- the helical tension spring 82 may be otherwise provided e.g. be attached by gluing, clamping or similar processes to the hook or support elements 71, 72, 77, 78.
- a damping device 28 is shown as a seventh embodiment.
- the figure shows a, parallel to the clamping screw 30 longitudinal section through a side view of an end portion 16.
- the elastic member 66 of the damping device 28 is designed here as a torsion spring 86 which surrounds the fastening sleeve 24 coaxially.
- the end portions of the torsion spring 86 are designed as insertion ends 87, 87 '.
- the connecting element 18 is provided with a frontal end 88, which extends perpendicular to the clamping screw 30.
- One of the torsion spring 86 facing end surface of the conclusion 88 has a Einsteckbohrung 90 for receiving the insertion end 87 of the torsion spring 86.
- the insertion hole 90 acts as a receiving element.
- the tooth surface facing away from the end face of the mounting sleeve 24 also has a Einsteckbohrung 90 ', which receives the second insertion end 87' of the torsion spring 86. If the grip element 14 is deflected out of its rest position about the pivot axis 48, the torsion spring 86 generates a restoring force. The mode of action is therefore analogous to the embodiments of FIGS. 4a to 4c. - -
- the person skilled in the art is familiar with further suitable receiving elements which can be used in a handle according to the invention for fastening the torsion spring 86.
- the torsion spring 86 may be otherwise provided e.g. be attached by gluing, clamping or similar processes on the fastener 12 and the connecting element 18.
- FIG. 5a An eighth embodiment of the handle according to the invention with a damping device 28 is shown in Fig. 5a.
- a rubber-elastic material 92 is inserted between the fastening sleeve 24 of the fastening element 12 and the connecting element 18.
- the rubber-elastic material 92 is connected to the outer circumferential surface 70 of the fastening sleeve and the inner lateral surface 72 of the connecting element 18.
- the connection can be made by mounting or vulcanization and / or gluing.
- An alternative connection provides surface structures on the inner and outer lateral surface 70, 72, to which a damping element 93 made of the rubber-elastic material 92 is inserted or used.
- the rubber-elastic material 92 undergoes a torsion about the pivot axis 48, so that the deflection is only transmitted in a damped manner to the fastening element 12.
- the fastening element 12 experiences forces due to transmitted vibrations. Also in this case, only a muted transfer to the grip element 14 takes place, so that the grip element 14 is largely decoupled from the vibrations.
- FIG. 5 b shows a ninth embodiment of an end region 16 with a damping device 28.
- the fastening sleeve 24 in this case has a quadrangular outer contour 94.
- the connecting element 18 has a, also quadrangular inner contour 96.
- WK angle
- WK angle
- a gap 98 which extends between the outer contour 94 and the inner contour 96, is filled with a porous material.
- the porous material 100 is compressed in a direction of rotation of the inner contour 96. As a result, the porous material 100 has a damping effect on the deflection.
- FIG. 5c shows a tenth embodiment with a modification of the outer contour 94 and the inner contour 96.
- the fastening sleeve 24 in this case has a wing-shaped outer contour 94 '.
- the inner contour 96 'of the connecting element 18 is provided with two radially inwardly drawn protuberances 102.
- a damping element 66 is provided as a damping element 66.
- the protuberances 102 each have a radial stop surface 104.
- the wings 106 of the fastening sleeve 24 are positioned adjacent to the stop surfaces 104.
- the damping element 66 acts asymmetrically on deflections on the grip element 14. If the grip element 14 is deflected along the direction of the arrow RD, which preferably corresponds to the pressure direction on the grip element 14, the deflection is transmitted only damped. However, acts a force in the direction of RZ, the damping element 66 is almost ineffective.
- FIGS. 6a and 6b show an eleventh and twelfth embodiment of an end region with a damping device 28 of a handle according to the invention.
- FIG. 1 shows a section through the handle according to the invention along the line A - A of Fig. 2.
- the predominantly hollow cylindrical connecting element 18 is provided at the end portion 16 of the handle member 14.
- the connecting element 18 encloses the fastening sleeve 24 of the fastening element 12, wherein a gap 108 between the inner circumferential surface of the connecting element 18 and the fastening sleeve 24 is formed.
- the fastening sleeve 24 has four radially outwardly directed, evenly distributed over the circumference, lamellar radial extensions 110.
- the inwardly directed radial extensions 112 are tilted by an angle WL in relation to the outward directed radial extensions 110.
- the angle WL in the rest position is approximately 45 °.
- an existing, an elastic material air spring 114 is also provided.
- the air spring 114 is designed here as a molded part, which has four radially inwardly directed grooves 116 and four radially outwardly directed grooves 118.
- the receiving grooves 116, 118 are distributed uniformly over the circumference of the air spring 114 analogously to the radial extensions, so that the inwardly directed receiving grooves 116 receive the inwardly directed radial extensions 112 and the outwardly directed receiving grooves 118, the outwardly directed radial extensions 110.
- the air spring 114 has an open honeycomb structure 120 with air corrugations 122. About size and geometry of the air honeycomb 122, an elasticity of the air spring 114 can be made specifically. - -
- the alternating inwardly and outwardly directed radial extensions 110, 112 form a limiting means 62, which limits the elastic deflection of the pivoting position from the rest position to an angular range W.
- the elastic deflection of the pivoting position starting from the rest position in one direction can be carried out in a simple manner in a larger direction than in an opposite direction.
- the elastic deflection in the pressure direction on the grip element 14 is significantly greater than in the pulling direction.
- Fig. 6b shows a further possibility with which the elastic deflection of the pivoting position starting from the rest position in one direction can be carried out greater than in an opposite direction.
- the honeycomb structure 120 of the air spring 114 has, starting from the inwardly directed radial extensions 112, an asymmetrical shape of the air cores 122.
- 112 air cells 122 are provided only one side of each radial extension.
- the radial extensions 110, 112 shown in Fig. 6a are also suitable in combination with a porous material 100 for the production of a damping device 28, as shown in Fig. 7a. This embodiment can be considered as thirteenth embodiment.
- the mode of action is analogous to the action of the air spring 114 of FIG. 6a.
- the radial extensions compress the porous material 100 lying in front of these extensions in a direction of movement, as a result of which the movement undergoes damping.
- Fig. 7b shows the possibility already described in Fig. 6a as a fourteenth embodiment by design of the angle WL, the elastic deflection of the pivot position starting from the rest position in one direction to be made greater than in an opposite direction.
- Inventive damping devices 28 are not fixed to the specific number of radial extensions 110, 112.
- the choice of a rubber elastic material for the air spring or the porous material may require other numbers of radial extensions 110, 112.
- the Concrete shape of the radial extensions 110, 112 and their execution may vary without affecting the spirit of the invention.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Vibration Prevention Devices (AREA)
- Percussive Tools And Related Accessories (AREA)
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102008009488 | 2008-02-15 | ||
DE102009000598A DE102009000598A1 (de) | 2008-02-15 | 2009-02-04 | Schwingungsentkoppelter Handgriff |
PCT/EP2009/051471 WO2009101062A1 (de) | 2008-02-15 | 2009-02-10 | Schwingungsentkoppelter handgriff |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2247413A1 true EP2247413A1 (de) | 2010-11-10 |
EP2247413B1 EP2247413B1 (de) | 2012-04-25 |
Family
ID=40874192
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP09710153A Active EP2247413B1 (de) | 2008-02-15 | 2009-02-10 | Schwingungsentkoppelter handgriff |
EP09709612.7A Active EP2244862B1 (de) | 2008-02-15 | 2009-02-10 | Schwingungsentkoppelter handgriff |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP09709612.7A Active EP2244862B1 (de) | 2008-02-15 | 2009-02-10 | Schwingungsentkoppelter handgriff |
Country Status (4)
Country | Link |
---|---|
EP (2) | EP2247413B1 (de) |
AT (1) | ATE554886T1 (de) |
DE (2) | DE102009000595A1 (de) |
WO (2) | WO2009101062A1 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2135713A2 (de) * | 2008-06-17 | 2009-12-23 | Makita Corporation | Zusatzhandgriff |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB0904275D0 (en) | 2009-03-12 | 2009-04-22 | Black & Decker Inc | Hammer with dampened handle |
GB201011978D0 (en) * | 2010-07-15 | 2010-09-01 | Black & Decker Inc | Side handle |
EP2532485B1 (de) * | 2011-06-07 | 2017-11-01 | Black & Decker Inc. | Montagevorrichtung zum Befestigen einer Griffanordnung an einem angetriebenen Werkzeug |
EP2532484B1 (de) | 2011-06-07 | 2017-01-11 | Black & Decker Inc. | Griffanordnung für ein elektrisches Werkzeug |
EP2803450A1 (de) * | 2013-05-16 | 2014-11-19 | HILTI Aktiengesellschaft | Zusatzhandgriff |
JP5997660B2 (ja) | 2013-05-29 | 2016-09-28 | 株式会社マキタ | 補助ハンドルおよび補助ハンドルを備えた往復動式作業工具 |
CN105345753B (zh) * | 2014-08-19 | 2018-12-28 | 博世电动工具(中国)有限公司 | 辅助把手以及手持式电动工具 |
CN106758899B (zh) * | 2016-12-27 | 2022-09-20 | 中国铁道科学研究院节能环保劳卫研究所 | 铁路金属声屏障的下部解耦器 |
DE102018121740A1 (de) * | 2018-09-06 | 2020-03-12 | Vorwerk & Co. Interholding Gmbh | Handgeführtes Elektrogerät mit einem verlagerbaren Handgriff |
US12021437B2 (en) | 2019-06-12 | 2024-06-25 | Milwaukee Electric Tool Corporation | Rotary power tool |
WO2022204118A1 (en) | 2021-03-25 | 2022-09-29 | Milwaukee Electric Tool Corporation | Side handle for power tool |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10130548B4 (de) * | 2001-06-25 | 2008-01-03 | Robert Bosch Gmbh | Zusatzhandgriff |
EP1400317B2 (de) | 2002-09-19 | 2014-03-05 | AEG Electric Tools GmbH | Zusatzhandgriff |
US7252156B2 (en) * | 2005-03-31 | 2007-08-07 | Makita Corporation | Vibration isolation handle |
DE102005000202A1 (de) * | 2005-12-23 | 2007-06-28 | Hilti Ag | Handgriff mit Vibrationsminderungseinrichtung |
-
2009
- 2009-02-04 DE DE102009000595A patent/DE102009000595A1/de not_active Withdrawn
- 2009-02-04 DE DE102009000598A patent/DE102009000598A1/de not_active Ceased
- 2009-02-10 EP EP09710153A patent/EP2247413B1/de active Active
- 2009-02-10 WO PCT/EP2009/051471 patent/WO2009101062A1/de active Application Filing
- 2009-02-10 WO PCT/EP2009/051470 patent/WO2009101061A1/de active Application Filing
- 2009-02-10 EP EP09709612.7A patent/EP2244862B1/de active Active
- 2009-02-10 AT AT09710153T patent/ATE554886T1/de active
Non-Patent Citations (1)
Title |
---|
See references of WO2009101062A1 * |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2135713A2 (de) * | 2008-06-17 | 2009-12-23 | Makita Corporation | Zusatzhandgriff |
Also Published As
Publication number | Publication date |
---|---|
WO2009101062A1 (de) | 2009-08-20 |
EP2244862A1 (de) | 2010-11-03 |
EP2247413B1 (de) | 2012-04-25 |
DE102009000598A1 (de) | 2009-08-20 |
EP2244862B1 (de) | 2016-10-19 |
ATE554886T1 (de) | 2012-05-15 |
DE102009000595A1 (de) | 2009-08-20 |
WO2009101061A1 (de) | 2009-08-20 |
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