CN118338986A - Tool receiving device for a portable machine tool, in particular an angle grinder - Google Patents
Tool receiving device for a portable machine tool, in particular an angle grinder Download PDFInfo
- Publication number
- CN118338986A CN118338986A CN202280079537.4A CN202280079537A CN118338986A CN 118338986 A CN118338986 A CN 118338986A CN 202280079537 A CN202280079537 A CN 202280079537A CN 118338986 A CN118338986 A CN 118338986A
- Authority
- CN
- China
- Prior art keywords
- unit
- actuating
- receiving device
- securing
- torque transmission
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000005540 biological transmission Effects 0.000 claims abstract description 307
- 238000010276 construction Methods 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 5
- 238000003780 insertion Methods 0.000 description 48
- 230000037431 insertion Effects 0.000 description 48
- 238000013461 design Methods 0.000 description 10
- 230000003993 interaction Effects 0.000 description 7
- 230000006378 damage Effects 0.000 description 6
- 208000027418 Wounds and injury Diseases 0.000 description 5
- 208000014674 injury Diseases 0.000 description 5
- 238000009434 installation Methods 0.000 description 5
- 230000006835 compression Effects 0.000 description 4
- 238000007906 compression Methods 0.000 description 4
- 230000008878 coupling Effects 0.000 description 4
- 238000010168 coupling process Methods 0.000 description 4
- 238000005859 coupling reaction Methods 0.000 description 4
- 239000011295 pitch Substances 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000012546 transfer Methods 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000001746 injection moulding Methods 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 238000013519 translation Methods 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 230000009347 mechanical transmission Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Landscapes
- Constituent Portions Of Griding Lathes, Driving, Sensing And Control (AREA)
Abstract
The invention is based on a tool receiving device for a portable machine tool, in particular an angle grinder, comprising: at least one output unit (14 a;14b;14 c) comprising at least one rotatably driven output spindle (16 a;16b;16 c); at least one quick clamping unit (18 a;18b;18 c) arranged on the output spindle (16 a;16b;16 c), comprising at least one torque transmission element (20 a;20b;20 c), in particular in rotationally fixed connection with the output spindle (16 a;16b;16 c), and at least one securing element (24 a;24b;24 c), in particular axially movably supported along the output shaft (22 a;22b;22 c) of the output spindle (16 a;16b;16 c); at least one stop unit (26 a;26b;26 c) for protecting the output spindle (16 a;16b;16 c) from rotational movement; and at least one actuating unit (28 a;28b;28 c) having at least one actuating element (30 a;30b;30 c), which is mounted in particular in a movable manner, by means of which the locking unit (26 a;26b;26 c) is actuable, in particular as a result of a movement of the actuating element (30 a;30b;30 c). It is proposed that the actuating element (30 a;30b;30 c) is provided to actuate the quick clamping unit (18 a;18b;18 c), in particular the securing element (24 a;24 b) or the torque transmission element (20 c), in particular as a result of a movement of the actuating element (30 a;30b;30 c).
Description
Background
Tool receiving devices for portable power tools, in particular angle grinders, are known, wherein the known tool receiving devices comprise: at least one output unit comprising at least one rotatably driven output spindle; at least one quick clamping unit arranged on the output spindle, comprising at least one torque transmission element connected to the output spindle in a rotationally fixed manner and at least one securing element mounted in a movable manner, in particular axially, along the output axis of the output spindle; at least one stop unit for securing the output spindle against rotational movement; and at least one actuating unit having at least one actuating element, which is mounted in particular in a movable manner, by means of which the locking unit can be actuated, in particular as a result of a movement of the actuating element.
Disclosure of Invention
The invention proceeds from a tool receiving device for a portable power tool, in particular an angle grinder, having at least one output unit, which comprises at least one rotatably driven output spindle; at least one quick clamping unit arranged on the output spindle, comprising at least one torque transmission element, in particular in rotationally fixed connection with the output spindle, and at least one securing element, in particular axially mounted so as to be movable along the output axis of the output spindle; at least one stop unit for securing the output spindle against rotational movement; and at least one actuating unit having at least one actuating element, which is mounted in particular in a movable manner, by means of which the locking unit can be actuated, in particular as a result of a movement of the actuating element.
It is proposed here that the actuating element is provided for actuating the quick clamping unit, in particular the securing element or the torque transmission element, in particular as a result of a movement of the actuating element. The actuating element is preferably configured as a mechanical actuating element, for example an actuating bowA manipulation lever, a manipulation button, a manipulation knob, a manipulation slider, etc. The actuating element is preferably mounted on the housing of the portable power tool in a movable, in particular pivotable, rotatable or translationally movable manner. However, it is also conceivable that the actuating element is configured as an electrical or electronic actuating element, for example a button, a switch, a touch-sensitive actuating sensor, etc., which, as a result of the actuation, generates an electrical or electronic signal which can be processed by the tool receiver or a computing unit of the portable power tool for actuating the locking unit and/or the quick clamping unit. In the embodiment of the actuating element as an electrical or electronic actuating element, it is conceivable to detect an actuation of the actuating element and to generate an electrical signal as a function of the detection of the actuation, which electrical signal is provided for actuating one or more actuators provided for moving the safety element and/or the stop element of the stop unit. "set-up" is to be understood in particular as specifically set-up, specifically programmed, specifically designed and/or specifically equipped. The object being provided as a function for the determination is to be understood in particular as meaning that the object fulfils and/or implements the function of the determination in at least one application and/or operating state. With the configuration according to the invention, a high level of handling comfort can advantageously be achieved, in particular because the two units, in particular the stop unit and the quick clamping unit, can be handled substantially simultaneously as a result of the actuation of the actuating element. The operator can advantageously be protected from injury, since it can advantageously be ensured that the rotation of the output spindle can be reliably prevented during the insertion tool exchange. Simple assembly and/or disassembly of the insertion tool on the tool receiving device can be achieved. Components, in particular further actuating elements, can advantageously be saved, as a result of which structural space can advantageously be saved or already available structural space can be used in a meaningful way.
Preferably, the output unit is provided for rotationally driving the male tool, such as a cutting or grinding disk or the like, fastened to the quick clamping unit about the output axis. However, it is also conceivable for the output unit to be provided for driving the insertion tool fastened to the quick clamping unit in an oscillating manner about the output axis. The output unit is preferably operatively connected to a drive unit of the portable power tool, in particular via at least one drive pinion of the drive unit, in a manner known to the person skilled in the art. The rotational or oscillating movement of the output unit, in particular of the output spindle and of the quick clamping unit arranged thereon, can preferably be brought about by the interaction of the output unit with a drive unit of the portable power tool, which drive unit comprises at least one electric motor or pneumatic motor. The quick clamping unit is preferably connected in a rotationally fixed manner to the output spindle. The rotational or oscillating movement of the output spindle can preferably be transmitted by the quick clamping unit, in particular by means of a torque transmission element, to a tool insert arranged on the quick clamping unit. The torque transmission element preferably comprises a plurality of torque transmission projections, in particular at least two, preferably at least three and particularly preferably at least four. The torque transmission projections are preferably arranged uniformly distributed along the circumferential direction of the quick clamping unit, in particular according to the symmetry of the n numbers. However, it is also conceivable for the torque transmission projections to be arranged unevenly in the circumferential direction. The circumferential direction preferably extends in a plane extending at least substantially perpendicular to the output axis. The expression "substantially perpendicular" shall in particular define an orientation of a direction relative to a reference direction, wherein the direction is at an angle of 90 ° to the reference direction, in particular as seen in the projection plane, and the angle has a maximum deviation of in particular less than 8 °, advantageously less than 5 ° and particularly advantageously less than 2 °. The torque transmission projections are preferably arranged offset relative to one another in the circumferential direction, in particular 180 ° in the case of two torque transmission projections, preferably 120 ° in the case of three torque transmission projections, and completely preferably 90 ° in the case of four torque transmission projections. Preferably, the quick clamping unit is arranged for receiving a small insertion tool, for example an insertion tool having a maximum diameter of 200mm or less.
Preferably, the securing element is arranged on the output spindle in a loss-proof manner. In particular, the securing element arranged in a loss-proof manner on the output spindle and/or each further component arranged in a loss-proof manner on the output spindle is connected in a non-loss-proof manner to the output spindle, in particular in the open state and in the closed state of the quick clamping unit. The "open state" of the quick-clamping unit is to be understood as meaning, in particular, a state of the quick-clamping unit which is provided for releasing an insertion tool arranged on the quick-clamping unit for disassembly and/or for releasing the quick-clamping unit for fitting the insertion tool on the quick-clamping unit. The "closed state" of the quick-action clamping unit is to be understood as meaning, in particular, a state of the quick-action clamping unit in which the insertion tool is to be fastened to the output unit in a ready-to-use manner and/or in which the insertion tool is prevented from being detached from the output unit, in particular without damage. The securing element is provided in particular in the closed state of the quick-action clamping unit for a force-locking and/or form-locking connection with the insertion tool for securing or fastening the insertion tool to the quick-action clamping unit. Preferably, an especially axial form-locking can be achieved by means of the securing element, preferably by means of at least a part of the insertion tool being clamped between at least two components of the quick clamping unit. It is conceivable that the securing element, in particular in addition to the axial form-locking, also produces a form-locking in the radial direction and/or in the circumferential direction, wherein the circumferential direction lies in a plane whose surface normal extends at least substantially parallel to the output axis. The securing element is in particular mounted so as to be movable in translation along a direction extending at least substantially parallel to the output axis and/or rotationally about the output axis, in particular in connection with the output unit. By "substantially parallel" is understood in particular an orientation of a direction relative to a reference direction, in particular in a plane, wherein the direction has a deviation of in particular less than 8 °, advantageously less than 5 °, and particularly advantageously less than 2 °, relative to the reference direction. Preferably, the movement axis of the fixing element extends coaxially with the output axis.
The quick clamping unit preferably comprises at least one spring element for loading the securing element or the torque transmission element with a spring force, in particular a spring force acting along the output axis, preferably in the direction of the torque transmission element or in the direction of the securing element. Preferably, the spring element is embodied as a compression spring, in particular as a helical compression spring. However, it is also conceivable for the spring element to have other configurations which would seem to be of interest to a person skilled in the art. The spring element is preferably supported at one end on the securing element or on the torque transmission element. The spring element is preferably supported with its other end on a housing projection of a housing of the portable power tool or on a bearing element of the output unit, in particular a rolling bearing, for example a ball bearing or the like. The bearing element is preferably provided for rotatably supporting the output spindle in the housing. The spring element is preferably provided for realizing an automatic resetting function of the quick clamping unit into the closed state. However, it is also conceivable for the quick-action clamping unit to have at least one actuator instead of or in addition to the spring element for realizing the self-resetting function.
The locking unit preferably comprises a locking element which is provided for a form-locking and/or force-locking connection in at least one state, in particular in the open state of the quick-action clamping unit, with the output spindle or with a further locking element of the locking unit, in particular with the output spindle. The stop element is preferably mounted movably, in particular translationally, in a direction extending transversely, in particular at least substantially perpendicularly, to the output axis. However, it is also conceivable for the stop element to be mounted so as to be movable in other directions which would seem to be expedient to a person skilled in the art, for example in a translationally movable manner in a direction which extends at least substantially parallel to the output axis. the stop element or the further stop element can be formed in one piece with the securing element or in one piece with the torque transmission element or as a separate component. The stop element or the further stop element is preferably movable as a result of actuation of the actuating element, in particular directly by the actuating element or indirectly by the actuating element. By "one-piece" is understood in particular at least a material-locking connection, for example by means of a welding process, an adhesive process, an injection molding process and/or other processes which appear to be expedient to a person skilled in the art, and/or advantageously by means of shaping in one piece, for example by means of casting and/or by means of a single-component or multicomponent injection molding process and advantageously by means of a single blank. In a one-piece design of the securing element and the securing element, the securing element is preferably configured as an axial projection of the securing element, which is arranged in particular on a side of the securing element facing away from the torque transmission element and is provided for engagement in the further securing element in the open state of the quick-action clamping unit. In a one-piece design of the locking element and the torque transmission element, the locking element is preferably configured as an axial projection of the torque transmission element, which is arranged in particular on a side of the torque transmission element facing away from the securing element and is provided for engagement in a further locking element in the open state of the quick-action clamping unit. In a preferred embodiment, the housing is arranged in a fixed manner in the housing in a one-piece design of the locking element with the securing element or with the torque transmission element, in particular in the form of a locking groove, into which the locking element embodied as an axial projection engages for preventing a rotational movement of the output spindle. However, it is also conceivable that the latching element is configured as a latching groove arranged on the securing element or the torque transmission element, and that the further latching element is configured as a latching projection which engages into the latching element as a result of a movement of the securing element or the torque transmission element relative to the further latching element. Other configurations and/or arrangements of the stop units that would seem to be of interest to a person skilled in the art are likewise conceivable. In addition, it is conceivable that the tool receiving device according to the invention is configured independently of the locking unit in an alternative configuration. In an alternative configuration of the tool receiving device according to the invention, in particular in an alternative configuration which is constructed independently of the stop unit, the tool receiving device according to the invention preferably comprises at least one output unit which comprises at least one rotatably driven output spindle; At least one quick clamping unit arranged on the output spindle, comprising at least one torque transmission element, in particular in rotationally fixed connection with the output spindle, and at least one securing element, in particular axially mounted so as to be movable along the output axis of the output spindle; and at least one actuating unit having at least one actuating element, in particular movably mounted, by means of which the quick-clamping unit, in particular the securing element or the torque transmission element, can be actuated, in particular as a result of a movement of the actuating element, preferably in the manner described herein.
Furthermore, it is proposed that the tool receiving device comprises at least one transmission unit which is provided for converting a movement of the actuating element for actuating the locking unit into a movement of the securing element or the torque transmission element or vice versa. The transmission unit preferably comprises at least one transmission element which is arranged on the actuating element or at least cooperates with the actuating element, in particular bears against the actuating element. Preferably, the actuating element acts directly on the transmission element or the transmission element is arranged on the actuating element. Preferably, the movement of the actuating element can be transmitted directly to the transmission element. Preferably, the actuating element is connected in a fixed manner to the transmission element. By "fixed movement" is understood in particular a connection between at least two components, in particular between the actuating element and the transmission element or between two units, wherein the movement of one of the components or one of the units can in particular be transmitted directly to the other component or the other unit. In the case of a pivotable support of the actuating element, the transmission element is preferably connected in a rotationally fixed manner to the actuating element. In the case of a translatably mounted actuating element, the transmission element is preferably connected at least kinematically to the actuating element, in particular in a kinematically fixed manner. The transmission unit may have any configuration that appears to be of interest to a person skilled in the art, for example as a cam gear, a rack gear, a coupling gear or the like. The transmission unit may be configured as a purely mechanical transmission unit or as an actuator-assisted transmission unit. The embodiment according to the invention allows a simple conversion of the operator force into the actuating force. A high level of handling comfort can advantageously be achieved, in particular because the two units, in particular the locking unit and the quick clamping unit, can be handled substantially simultaneously as a result of the actuation of the actuating element and/or because small operator forces for actuating the actuating element can advantageously be converted into large forces for moving the locking element and/or the securing element.
It is furthermore proposed that the tool receiving device comprises at least one transmission unit, in particular the above-described transmission unit, having at least one, in particular ramp-shaped transmission element, in particular the above-described transmission element, which is provided for converting a translational or rotational movement of the actuating element into a translational movement of the securing element or the torque transmission element, in particular in a direction extending at least substantially parallel to the output axis of the output spindle. Preferably, the transmission element is provided for displacing the securing element or the torque transmission element against the spring force of the spring element in a direction extending at least substantially parallel to the output axis of the output spindle as a function of the movement of the actuating element. The securing element or the torque transmission element preferably has at least one ramp-like region, in particular a circumferential flange, which is configured in correspondence with the ramp-like transmission element. Preferably, the slope of the slope-like region of the slope-like transmission element and/or of the securing element or of the torque transmission element is less than 50 °, preferably less than 40 ° and particularly preferably less than 30 °. The ramp-like transmission element may be formed by a ramp surface or be configured as a spiral. The ramp-like transmission element can be arranged on the actuating element or on an additional component of the transmission unit, which cooperates with the actuating element. The ramp-like transmission element is rotatably or translationally mounted, in particular in the housing of the portable power tool. Instead of a transmission element, it is conceivable for the actuating unit to comprise an actuator which moves the securing element or the torque transmission element in a direction extending at least substantially parallel to the output axis as a function of the actuation of the actuating element. The actuator may be configured as a spindle drive, a piston drive, such as a hydraulic or pneumatic piston, an electric motor, or the like. By means of the embodiment according to the invention, a deflection in the direction of movement can be achieved in a constructively simple manner. Advantageously, a high level of steering comfort can be achieved in a small space, in particular because the existing installation space can be advantageously used in a meaningful way by deflecting the direction of movement. The conversion of the operator force into the actuating force can be realized in a structurally simple manner. A high level of steering comfort can advantageously be achieved, in particular because small operator forces for steering the steering element can advantageously be converted into large forces for moving the stop element and/or the safety element. Advantageously, a preferred force distribution of the operator force required for moving the securing element and/or the stop element can be achieved.
It is furthermore proposed that the tool receiving device comprises at least one transmission unit, in particular the above-described transmission unit, which has at least one, in particular further or above-described transmission element, which cooperates with a projection, in particular a circumferential flange, arranged on the securing element or the torque transmission element, for moving the securing element or the torque transmission element, as a function of the actuation of the actuating element. It is conceivable that the ramp-like transmission element, which is connected in a rotationally fixed manner to the actuating element, cooperates with a projection, in particular a circumferential flange, arranged on the securing element or the torque transmission element, as a result of the actuation of the actuating element, for moving the securing element or the torque transmission element, wherein the circumferential flange is configured in correspondence with the ramp-like transmission element. Alternatively, it is conceivable for the transmission unit to have a further transmission element which is mounted in a translatory manner in the housing of the portable power tool and is connected to the actuating element by a ramp-like transmission element, wherein the further transmission element cooperates with a projection, in particular a circumferential flange, arranged on the securing element or the torque transmission element, for moving the securing element or the torque transmission element, as a function of the actuation of the actuating element. The further transmission element is preferably configured as a tie rod. Preferably, the further transmission element has a driving projection which is arranged transversely, in particular at least substantially perpendicularly, to the longitudinal axis of the further transmission element and which is provided for interaction with a projection, in particular a circumferential flange, arranged on the securing element. The further transmission element preferably comprises a beveled protrusion arranged for co-acting with the ramp-like transmission element. The ramp projection preferably extends transversely, in particular at least substantially perpendicularly, to the longitudinal axis of the further transmission element, in particular at the end of the further transmission element facing away from the drive projection of the further transmission element. Preferably, the ramp projection comprises at least one ramp-like region, in particular an abutment surface which is inclined to the longitudinal axis of the further transmission element. The ramp-like region of the ramp projection is preferably configured in correspondence with a ramp-like transmission element. In particular, the ramp-like region of the ramp projection has a slope corresponding to the ramp-like transmission element. By means of the configuration according to the invention, a reliable movement of the securing element can advantageously be achieved as a function of the actuation of the actuating element. The kinematic coupling between the quick clamping unit and the stop unit can be realized in a simple manner by means of a structural design. Advantageously, a high level of steering comfort can be achieved in a small space, in particular because the existing installation space can be advantageously used by deflecting the direction of movement. Advantageously, a high steering comfort can be achieved.
It is furthermore proposed that the tool receiving device comprises at least one transmission unit, in particular the above-mentioned transmission unit, which has at least one, in particular the above-mentioned further transmission element or the above-mentioned transmission element, for moving the securing element or the torque transmission element as a function of the actuation of the actuating element, wherein in particular the above-mentioned further transmission element or the above-mentioned transmission element is arranged in a contactless manner with the securing element or the torque transmission element in at least one operating state. Preferably, in particular the further transmission element or the transmission element is arranged in a contactless manner with the securing element or the torque transmission element in the closed state of the quick-clamping unit. In particular, the further transmission element or the transmission element is arranged at a distance from the securing element, in particular from the projection of the securing element, or from the torque transmission element, in particular from the projection of the torque transmission element, in the closed state of the quick-action clamping unit, in a direction extending at least substantially parallel to the output axis. Preferably, this is achieved by the arrangement of the securing element or the torque transmission element, which is present at least in the closed state of the quick-action clamping unit, being offset from the further transmission element or the transmission element described above in particular in a direction extending at least substantially parallel to the output axis. The securing element can be moved maximally into its position by means of the spring force of the spring element in the closed state of the quick-action clamping unit, so that a distance exists between the further transmission element or the transmission element, in particular between the projection of the securing element and the ramp-like transmission element or between the projection of the securing element and the projection of the further transmission element, in a direction extending at least substantially parallel to the output axis. By means of the embodiment according to the invention, wear on the securing element and/or the transmission unit during rotation of the quick clamping unit can advantageously be counteracted during operation of the portable power tool provided with the tool receiving means. Advantageously, a long service life of the tool receiving device can be achieved.
It is furthermore proposed that the securing element can be moved according to actuation of the actuating element in a movement direction which extends transversely, in particular at least substantially perpendicularly, to the movement direction of the locking unit, in particular the above-mentioned locking element of the locking unit being movable according to actuation of the actuating element in the movement direction. Preferably, the direction of movement of the securing element extends at least substantially parallel to the output axis. The direction of movement of the stop element preferably extends transversely, in particular at least substantially perpendicularly, to the output axis, in particular in the case of a configuration in which the stop element is separate from the securing element. However, it is also conceivable for the direction of movement of the securing element and/or the direction of movement of the stop element to have other orientations which appear to be of interest to the person skilled in the art. By means of the embodiment according to the invention, the available installation space can advantageously be used in a meaningful way. The kinematic coupling between the quick clamping unit and the stop unit can be realized in a simple manner by means of a structural design.
Furthermore, it is proposed, in particular in at least one embodiment, that the tool receiving device comprises at least one transmission unit, in particular the above-described transmission unit, having at least one, in particular above-described ramp-like transmission element, which is arranged on, in particular on, the above-described stop element of the stop unit, in particular is constructed in one piece with the stop element of the stop unit. The stop element preferably has at least one transverse projection which is provided for engagement in a stop groove of a further stop element which is connected in particular in a rotationally fixed manner to the output shaft. The transverse projection preferably extends, in particular in the assembled state, from the base body of the stop element in a direction extending at least substantially perpendicularly to the output axis in the direction of the output spindle. Preferably, the transverse projections extend at least substantially parallel to the main extension plane of the base body of the stop element. The main extension plane of the base body of the stop element extends at least substantially perpendicularly to the output axis, in particular in the assembled state. The ramp-like transmission element arranged on the stop element is preferably provided for co-action with a ramp projection of the further transmission element, in particular in order to move the securing element in a movement direction of the securing element which extends at least substantially parallel to the output axis. By means of the embodiment according to the invention, the available installation space can advantageously be used in a meaningful way. Advantageously, costs, assembly effort and components can be saved. The kinematic coupling between the quick clamping unit and the stop unit can be realized in a simple manner by means of a structural design.
Furthermore, it is proposed that the tool receiving device comprises at least one locking unit which secures the actuating element, the quick-action clamping unit and/or the locking unit in at least one actuating position. The locking unit preferably comprises at least one locking element which is provided for securing the actuating element in the actuating position by means of a form-locking and/or force-locking connection. The locking element can act directly on the actuating element or indirectly on the actuating element with one or more components, in particular components of the transmission unit, interposed therebetween, in order to secure the actuating element in the actuating position by means of a form-locking and/or force-locking connection. It is also conceivable that the latching element is provided for securing the actuating element in the actuating position by means of magnetic forces. Other configurations for securing the actuating element in the actuating position that would seem to be of interest to a person skilled in the art are likewise conceivable. The locking unit is preferably provided for locking the quick clamping unit in the open state, in particular as a result of locking the actuating element in the actuating position, and for locking the locking unit in the locking state, in which the rotational movement of the output spindle is blocked by the form fit. By means of the configuration according to the invention, a high steering comfort can advantageously be achieved. The operator can advantageously be protected from injury, since it can advantageously be ensured that during the replacement of the insertion tool: the rotation of the output spindle can be reliably inhibited.
Furthermore, it is proposed that the tool receiving device comprises at least one locking unit which secures the actuating element, the quick-action clamping unit and/or the locking unit in at least one actuating position; and the tool receiving device comprises at least one transmission unit, in particular the above-mentioned transmission unit, wherein the catch unit is at least partially formed integrally with the transmission unit. A unit being integrally formed with another unit is to be understood in particular as meaning that the unit and the other unit have at least one common component which is provided for the function of the unit and the other unit. Preferably, the latching element of the latching unit is of one-piece construction with the ramp-like transmission element. In particular, the latching element is designed as a flat surface or recess which engages directly on the ramp-like transmission element, in particular on the ramp surface. Preferably, the securing element or the further transmission element, in particular the ramp projection, rests against the locking element in the secured state of the actuating element. Preferably, the securing element or the further transmission element, in particular the ramp projection, is pressed onto the latching element in the secured state due to the spring force of the spring element, whereby in particular a movement of the securing element or the further transmission element and thus of the actuating element can be prevented. The further transmission element, in particular the beveled protrusion, preferably comprises a flattened region, in particular a flattened surface, which is provided for interaction with the latching element. Preferably, the flattened region is arranged between two ramp-like regions of the further transmission element, in particular of the ramp projection. The locking element is preferably designed such that the safety position can be released by the super-lock (u berrasten), in particular because of the movement of the locking element counter to the direction of the locking movement. By means of the configuration according to the invention, a high steering comfort can advantageously be achieved. The operator can advantageously be protected from injury, since it can advantageously be ensured that: accidental rebound of the actuating element can be reliably prevented. A compact configuration can advantageously be achieved. Advantageously, the already existing installation space can be used in a meaningful way.
It is furthermore proposed that the tool receiving device comprises, in particular in an alternative configuration, at least one guide unit which is provided for guiding the movement of the torque transmission element and for limiting the maximum movement path, in particular at least one maximum rotation path, of the torque transmission element relative to the output spindle. Preferably, the guiding unit is provided for guiding the axial movement of the torque transmitting element relative to the output spindle. Alternatively or additionally, the guiding unit is preferably provided for guiding a rotational movement of the torque transmission element relative to the output spindle, in particular for guiding a rotational movement of the torque transmission element around the output spindle. The torque transmission element is in particular rotatable relative to the output shaft along an angular range of less than 90 °, preferably less than 60 °, and particularly preferably greater than 15 °. Preferably, the torque transmitting element is rotatable relative to the output spindle in a circumferential direction. The torque transmission element is preferably axially movable relative to the output shaft along a maximum axial distance of in particular less than 10mm, preferably less than 5mm and particularly preferably less than 3 mm. The torque transmission element may perform a stepped movement with respect to the output spindle, for example an axial movement following a rotational movement or vice versa, by means of the guide unit, or the torque transmission element may perform a superimposed movement with respect to the output spindle, for example a superimposed axial movement and rotational movement, by means of the guide unit. The torque transmission element can be moved by the guide unit, preferably with respect to the securing element, in particular in order to be able to effect a transition of the quick-action clamping unit from the open state into the closed state or vice versa. By means of the embodiment according to the invention, a simple assembly and/or disassembly of the insertion tool on the tool receiving device can be achieved. In particular, a reliable movement of the torque transmission element can be achieved in a predefined limit value. A reliable and accurate positioning of the torque transmission element relative to the securing element can advantageously be achieved, in particular in order to enable a simple removal of the insertion tool from the quick-clamping unit or in order to enable a simple introduction of the insertion tool onto the quick-clamping unit.
Furthermore, it is proposed that the guide unit is designed as a slotted guide, wherein at least one slotted guide element of the guide unit is arranged in particular in a stationary manner on the output spindle and at least one further slotted guide element of the guide unit is arranged in particular in a stationary manner on the torque transmission element. Preferably, the slotted element is configured as a pin which is connected in a rotationally fixed manner to the output shaft. However, it is also conceivable for the chute element to have other configurations which would seem to be of interest to a person skilled in the art, for example as projections, grooves, webs, thread pitches, etc. The chute element preferably extends transversely, in particular at least substantially perpendicularly, to the output axis, in particular in the configuration of the chute element as a pin. The sliding groove element preferably extends transversely through the output spindle, in particular at least into the securing element or beyond the securing element into the torque transmission element, in particular into a further sliding groove element arranged on the torque transmission element. The chute element can project beyond the output spindle on one side, on both sides or on multiple sides. The securing element is preferably connected in a rotationally fixed manner to the output shaft by means of a slotted guide element. In particular, the securing element is arranged securely on the output spindle axially along the output axis by means of the slotted guide element. The further slide groove element is preferably configured as a guide groove. Preferably, the chute element is embedded in the further chute element. Preferably, the guide unit comprises two further slotted elements which are arranged mirror-symmetrically on the torque transmission element and are each configured as a guide slot. Preferably, the chute element is embedded in two further chute elements. However, it is also conceivable for the slotted-link element to be configured as a guide slot and to be introduced into the output spindle, wherein the further slotted-link element is configured as a pin which is arranged on the torque transmission element in a rotationally fixed manner and extends through the slotted-link element configured as a guide slot. The torque transmission element is preferably connected in a rotationally fixed manner to the output shaft by the interaction of the slotted guide element with the further slotted guide element, at least in the closed state of the quick clamping unit. With the configuration according to the invention, the movement path of the torque transmission element relative to the output spindle can be specified in a simple manner. In particular, a reliable movement of the torque transmission element can be achieved in a predefined limit value, in particular for the purpose of effecting a transition of the quick clamping unit from the open state into the closed state and vice versa. A reliable and accurate positioning of the torque transmission element relative to the securing element can advantageously be achieved, in particular in order to enable a simple removal of the insertion tool from the quick-clamping unit or in order to enable a simple insertion of the insertion tool onto the quick-clamping unit.
Furthermore, it is proposed that the guide unit has at least one slotted guide element, in particular the slotted guide element described above, which is arranged in a particularly fixed manner on the output spindle and which is connected to the torque transmission element for the rotational movement thereof. The slide element is preferably connected to the torque transmission element in a form-locking and/or force-locking manner for the rotational movement of the torque transmission element. The slot elements are preferably inserted into further slot elements arranged on the torque transmission element and rest for rotation against the edge regions of the slot elements which are embodied as guide slots. The slotted element is preferably provided for rotation-carrying of the torque transmission element, in particular for transmitting torque from the output spindle to the torque transmission element, at least in the closed state of the quick clamping unit. By means of the embodiment according to the invention, a simple structural design can be achieved for the rotary drive of the torque transmission element at least in the closed state of the quick-action clamping unit, wherein a movement of the torque transmission element can also be achieved by means of a guide unit, which is provided for a simple transfer of the quick-action clamping unit into, for example, the open state. The movement path of the torque transmission element relative to the output spindle can be specified in a simple manner.
It is furthermore proposed that the guide unit has at least one, in particular further, chute element, in particular the above-mentioned further chute element, which has at least two rail sections extending transversely to one another, in particular axially, and a surrounding rail section. The two rail sections extending transversely to one another are preferably arranged directly next to one another. The axially extending rail section preferably has a main orientation extending at least substantially parallel to the output axis. The circumferential rail sections are preferably arranged at an angle to the axially extending rail sections, in particular when viewed in a projection plane. Preferably, the circumferential guide rail section extends with a gradient in the circumferential direction, in particular like a section of the pitch of a thread. The circumferential guide rail section extends in the circumferential direction, in particular over an angular range of less than 90 °, preferably less than 70 °, and particularly preferably less than 50 °. The guide unit is preferably configured such that the torque transmission element can rotate relative to the securing element along an angular range of, for example, 45 °. Other angular ranges that would seem to be of interest to a person skilled in the art are also conceivable, which angular ranges are of interest for the quick clamping unit to be transferred from the closed state into the open state. Preferably, the insertion tool is covered by the securing element as a result of a rotation of the torque transmission element relative to the securing element, in particular extending along an angular range of 45 °. Preferably, the insertion tool is rotatable together with the torque transmission element, in particular because a partial region of a tool hub (Werkzeugnabe) of the insertion tool rests against a torque transmission projection of the torque transmission element in the state in which the insertion tool is arranged on the quick-clamping unit. By means of the embodiment according to the invention, it is possible to achieve a simple design that first the torque transmission element and the securing element are axially removed before the rotational movement takes place to release the insertion tool. The movement of the protection tool and/or the component of the torque transmission element with a low tendency to wear out abrasive particles can advantageously be achieved when the quick clamping unit is actuated.
Furthermore, a portable machine tool, in particular an angle grinder, having at least one tool receiving device according to the invention is proposed. A "portable power tool" is to be understood here to mean, in particular, a power tool for machining workpieces, which can be transported by an operator without a transport means. The portable power tool has, in particular, a mass of less than 40kg, preferably less than 10kg and particularly preferably less than 5kg. Preferably, the portable power tool is configured as an angle grinder. However, it is also conceivable for the portable power tool to have other configurations which would seem to be of interest to a person skilled in the art, for example as a circular saw, oscillating power tool, grinding machine, etc. With the configuration according to the invention, a high level of handling comfort can advantageously be achieved, in particular because the two units, in particular the stop unit and the quick clamping unit, can be handled substantially simultaneously as a result of the actuation of the actuating element. The operator can advantageously be protected from injury, since it can advantageously be ensured that during the replacement of the insertion tool: the rotation of the output spindle can be reliably inhibited. Simple assembly and/or disassembly of the insertion tool on the tool receiving device can be achieved. Components, in particular further actuating elements, can advantageously be saved, as a result of which structural space can advantageously be saved or already available structural space can be used in a meaningful way.
The tool receiving device according to the invention and/or the portable power tool according to the invention should not be limited to the above-described applications and embodiments. The tool receiving device according to the invention and/or the portable power tool according to the invention can in particular have a different number of elements, components and units than the number of individual elements, components and units described here in order to satisfy the functional manner described here.
Drawings
Further advantages result from the following description of the drawings. Embodiments of the invention are illustrated in the accompanying drawings. The drawings, description and claims contain features of multiple combinations. The individual features are expediently also individually considered by the person skilled in the art and are summarized as meaningful further combinations.
The drawings show:
Fig. 1: a schematic view of a portable power tool according to the invention with a tool receiving device according to the invention;
Fig. 2: a schematic view of a tool receiving device according to the invention in an at least partially disassembled housing of a portable power tool according to the invention;
fig. 3: a schematic perspective view of a tool receiving device according to the invention;
Fig. 4: schematic representation of a cross section of a tool receiving device according to the present invention;
fig. 5: alternative schematic perspective views of a tool receiving device according to the invention;
fig. 6: alternative schematic illustrations of a cross section of a tool receiving device according to the invention;
fig. 7: alternative exemplary illustrations of a ramp-like transmission element of the tool receiving device according to the invention, which is constructed in one piece with the stop element;
Fig. 8: a schematic view of an alternative further transmission element of the tool receiving device according to the invention;
Fig. 9: a schematic perspective view of a further alternative tool receiving device according to the invention, wherein the quick clamping unit of the further alternative tool receiving device according to the invention is in an open state;
fig. 10: a schematic perspective view of a further alternative tool receiving device according to the invention, wherein the quick clamping unit of the further alternative tool receiving device according to the invention is in the closed state; and
Fig. 11: another alternative tool receiving device according to the invention is schematically shown in cross-section.
Detailed Description
Fig. 1 shows a portable power tool 12a having at least one tool receiving device 10 a. The portable power tool 12a is configured as an angle grinder, in particular a battery-operated angle grinder. Alternatively, the portable power tool 12a has another configuration which appears to be expedient to a person skilled in the art, for example as a grinding machine, a multifunction machine, a circular sawing machine or the like. Preferably, the portable power tool 12a is provided for using an insertion tool 54a (see fig. 2) having a maximum diameter of less than 200mm, in particular less than 120 mm. Fig. 1 does not show a battery that can be arranged in the portable power tool 12a, in particular in the housing 52a of the portable power tool 12a, in particular in the main handle 56a formed by the housing 52 a. The main handle 56a preferably has a main extension axis that extends at least substantially perpendicular to the output axis 22a of the output spindle 16a of the output unit 14a (see fig. 2) of the tool receiving device 10 a. The output unit 14a is at least partially disposed in the housing 52 a. The portable power tool 12a comprises a drive unit 58a which is arranged in the housing 52a, in particular at least partially in a part of the housing 52a, in which the output unit 14a is also arranged. The drive unit 58a preferably has a rotation axis 60a which extends at least substantially parallel, in particular coaxially, to the output axis 22 a. The drive unit 58a is arranged for driving the output unit 14a in a manner known to a person skilled in the art. Preferably, the drive unit 58a is arranged for directly driving the output spindle 16a. The output spindle 16a is rotatably driven about the output axis 22a of the output spindle 16a by means of a drive unit 58 a. However, it is also conceivable that the output spindle 16a can be driven in an oscillating manner about the output shaft 22a by means of the drive unit 58 a. The drive unit 58a preferably comprises an electric motor (not further shown here). The rotor shaft of the electric motor (not shown further here) is preferably connected in a rotationally fixed manner to the output shaft 16a. However, it is also conceivable for the rotor shaft to be connected to the output shaft 16a by a belt drive, by a gear drive or the like in a manner known to the person skilled in the art for transmitting drive forces and/or drive torques.
Fig. 2 shows a schematic illustration of the tool receiving device 10a in an at least partially disassembled housing 52a of the portable power tool 12 a. The tool receiving device 10a for a portable power tool 12a comprises at least one output unit 14a, which comprises an at least rotatably driven output spindle 16a; and at least one quick clamping unit 18a arranged on the output spindle 16a, comprising at least one torque transmission element 20a (see also fig. 3 and 4) which is connected to the output spindle 16a in a rotationally fixed manner, and at least one securing element 24a (see also fig. 3 and 4) which is mounted in a movable manner, in particular axially, along an output axis 22a of the output spindle 16 a.
The quick clamping unit 18a is preferably connected in a rotationally fixed manner to the output spindle 16 a. The rotational or oscillating movement of the output spindle 16a can preferably be transmitted by the quick clamping unit 18a, in particular by means of the torque transmission element 20a, to the insertion tool 54a arranged on the quick clamping unit 18 a. The torque transmission element 20a preferably comprises a plurality of torque transmission projections 66a, 68a (only two torque transmission projections 66a, 68a are shown in fig. 2 and 3), in particular at least two, preferably at least three and particularly preferably at least four. The torque transmission projections 66a, 68a are preferably arranged on the torque transmission element 20a in an evenly distributed manner along the circumferential direction 70a of the quick clamping unit 18a, in particular according to a symmetry of n numbers.
The torque transmission element 20a preferably comprises at least one axial securing projection 72a, 74a, 76a, 78a, in particular at least four axial securing projections 72a, 74a, 76a, 78a (see also fig. 3). The axial securing projections 72a, 74a, 76a, 78a are preferably arranged on the torque transmission element 20a in an evenly distributed manner along the circumferential direction 70a of the quick clamping unit 18a, in particular symmetrically according to the number n. The axial relief projections 72a, 74a, 76a, 78a and the torque transmission projections 66a, 68a are preferably of one-piece construction with each other. The axial securing projections 72a, 74a, 76a, 78a, in particular the abutment surfaces of the axial securing projections 72a, 74a, 76a, 78a facing the housing 52a, cooperate with the securing element 24a for axially clamping the insertion tool 54a. Preferably, the insert tool 54a, in particular a hub (not shown further here) of the insert tool 54a, is arranged axially in a direction extending at least substantially parallel to the output axis 22a, in particular clamped between the axial securing projections 72a, 74a, 76a, 78a, in particular between the abutment surfaces of the axial securing projections 72a, 74a, 76a, 78a facing the securing element 24a and the clamping surfaces of the securing element 24a, in particular of the securing element 24a facing the torque transmission element 20a, in a state secured to the output spindle 16a by means of the quick clamping unit 18 a. In the state clamped between the securing element 24a and the axial securing projections 72a, 74a, 76a, 78a, the insert tool 54a, in particular the hub of the insert tool 54a, rests in the circumferential direction 70a on the torque transmission projections 66a, 68 a. The axial securing projections 72a, 74a, 76a, 78a preferably have a droplet-like or triangular shape as viewed in a plane extending at least substantially perpendicularly to the output axis 22 a. The torque transmission projections 66a, 68a extend from the contact surfaces of the axial securing projections 72a, 74a, 76a, 78a in the direction of the securing element 24a, in particular in a direction extending at least substantially parallel to the output axis 22 a. The torque transmission element 20a preferably has the shape of a cross with four sides of especially identical length, viewed in a plane extending at least essentially perpendicularly to the output axis 22a, wherein the sides of the cross, viewed from the outside to the inside, extend conically in the direction of the output axis 22a, in particular in the shape of a triangle or a droplet. The insertion tool 54a, and in particular the hub of the insertion tool 54a, has a configuration corresponding to the shape of the torque transmission element 20 a. However, it is also conceivable for the torque transmission element 20a to have other shapes which appear to be significant to a person skilled in the art, as viewed in a plane which extends at least substantially perpendicularly to the output axis 22 a.
Preferably, the securing element 24a has an abutment edge 80a, in particular four abutment edges 80a (see fig. 3, only one abutment edge 80a being shown), which, for torque transmission, abuts against the insertion tool 54a, in particular against the hub of the insertion tool 54a, in the state of the insertion tool 54a clamped by the quick clamping unit 18 a. Preferably, the contact edges 80a each limit a step of the securing element 24a that extends parallel to the clamping surface of the securing element 24 a. In particular, the axial securing projections 72a, 74a, 76a, 78a only partially cover the clamping surface, in particular, viewed in a direction extending at least substantially parallel to the output axis 22 a. For example, the axial securing projections 72a, 74a, 76a, 78a cover less than 80%, preferably less than 60% and particularly preferably 50% or less of the clamping surface. Preferably, before the insertion tool 54a can be completely removed from the quick-clamping unit 18a, the insertion tool 54a must be lifted from the clamped state of the insertion tool 54a, in particular in the open state of the quick-clamping unit 18a, and moved out immediately after rotation, in particular over an angular range of 22.5 °, in particular under the axial securing projections 72a, 74a, 76a, 78a, when removed from the quick-clamping unit 18 a.
The securing element 24a is mounted on the output spindle 16a in particular in a translationally movable manner in a direction extending at least substantially parallel to the output axis 22 a. The securing element 24a is connected to the output shaft 16a in a rotationally fixed, but axially movable manner by means of a force-locking and/or form-locking connection (see also fig. 4). Preferably, the quick clamping unit 18a comprises at least one spring element 82a for loading the securing element 24 with a spring force, in particular a spring force acting along the output axis 22a, preferably in the direction of the torque transmission element 20 a. Preferably, the spring element 82a is embodied as a compression spring, in particular as a helical compression spring. However, other configurations of spring element 82a that would seem to be significant to one skilled in the art are also contemplated. The spring element 82a is preferably supported at one end on the safety element 24 a. The spring element 82a is preferably supported at the other end on a housing projection of the housing 52a of the portable power tool 12a or on a bearing element 84a of the output unit 14a, in particular a rolling bearing, for example a ball bearing or the like. The bearing element 84a is preferably provided for rotatably supporting the output spindle 16a in the housing 52 a. The spring element 82a is preferably provided for achieving an automatic return function of the quick-action clamping unit 18a into the closed state and/or for causing a pressing force for clamping the insertion tool 54a, in particular after releasing the latching unit 50a of the tool receiving device 10 a. However, it is also conceivable for the quick-action clamping unit 18a to have, instead of or in addition to the spring element 82a, at least one actuator for realizing an automatic return function and/or for clamping the pressing force of the insertion tool 54 a.
Furthermore, the tool receiving device 10a comprises at least one stop unit 26a for securing the output spindle 16a against rotational movement (the stop unit 26a is only shown in dashed lines in fig. 2, in particular because the tool receiving device 10a can also be configured independently of the stop unit 26 a). Furthermore, the tool receiving device 10a comprises at least one actuating unit 28a, which has at least one actuating element 30a, which is mounted in particular in a movable manner, by means of which the locking unit 26a and/or the quick clamping unit 18a can be actuated, in particular as a result of the movement of the actuating element 30 a. The actuating element 30a is preferably configured as a mechanical actuating element, for example an actuating lever, actuating button, actuating knob, actuating slide or the like. In the exemplary embodiment shown in fig. 1 to 4, the actuating element 30a is preferably configured as an actuating lever. The actuating element 30a is preferably mounted movably, in particular pivotably, on the housing 52a, in particular in the housing, in particular about a pivot axis 92a of the actuating element 30a extending at least substantially parallel to the output shaft 22 a. The actuating element 30a is provided for actuating the quick clamping unit 18a, in particular the securing element 24a, in particular due to a movement of the actuating element 30 a.
The locking unit 26a preferably comprises a locking element 48a which is provided for a form-locking and/or force-locking connection with a further locking element 86a of the locking unit 26a in at least one state, in particular in the open state of the quick-action clamping unit 18 a. The stop element 48a is connected in a rotationally fixed manner to the output shaft 16 a. The stop element 48a is preferably mounted movably, in particular translationally, in a direction extending at least substantially parallel to the output axis 22 a. However, it is also conceivable for the stop element 48a to be mounted movably in other directions which would seem to be of interest to a person skilled in the art. The stop element 48a is preferably of one-piece construction with the safety element 24 a. The further stop element 86a is preferably of one-piece construction with the housing 52 a. The stop element 48a is preferably movable as a result of actuation of the actuating element 30a, in particular directly by the actuating element 30a or indirectly by the actuating element 30a. The stop element 48a is preferably configured as an axial projection of the securing element 24a, which is arranged in particular on the side of the securing element 24a facing away from the torque transmission element 20a and is provided for engagement in a further stop element 86a in the open state of the quick clamping unit 18 a. Preferably, a further stop element 86a is fixedly arranged in the housing 52a, in particular in the form of a stop groove, into which the stop element 48a, which is in the form of an axial projection, engages for preventing a rotational movement of the output spindle 16 a.
The tool receiving device 10a preferably comprises at least one transmission unit 32a, which is provided for converting a movement of the actuating element 30a for actuating the locking unit 26a into a movement of the securing element 24 a. However, it is also conceivable that the transmission unit 32a, in particular in a configuration of the tool receiver 10a independent of the locking unit 26a, is provided only for converting the movement of the actuating element 30a into the movement of the securing element 24a, in particular in order to transfer the quick-action clamping unit 18a into the open state. The transmission unit 32a preferably comprises at least one transmission element 34a, which is arranged on the actuating element 30 a. Preferably, the transmission element 34a is arranged directly on the actuating element 30 a. Preferably, the movement of the actuating element 30a can be transmitted directly to the transmission element 34 a. Upon pivotal movement of the operating element 30a about the pivot axis 92a of the operating element 30a, the transmission element 34a is also able to move about the pivot axis 92 a. Preferably, actuating element 30a is connected in a rotationally fixed manner to transmission element 34 a. The transmission element 34a is preferably arranged on a bearing element 88a, in particular a bearing sleeve or bearing pin, of the actuating unit 28a for pivotably supporting the actuating element 30a, which is in particular of one-piece construction with the bearing element 88 a. Bearing element 88a is connected in a rotationally fixed manner to actuating element 30 a. The transmission element 34a is connected in a rotationally fixed manner to the actuating element 30a (see also fig. 3). The transmission element 34a is arranged in particular on the outer surface of the bearing element 88 a.
The transmission element 34a is preferably configured in a ramp-like manner. The ramp-like transmission element 34a is preferably provided for converting a rotational movement of the actuating element 30a into a translational movement of the securing element 24a, in particular in a direction extending at least substantially parallel to the output axis 22a of the output spindle 16 a. Preferably, the transmission element 34a is provided for displacing the safety element 24a against the spring force of the spring element 82a in a direction extending at least substantially parallel to the output axis 22a of the output spindle 16a as a function of the movement of the actuating element 30 a. The transmission element 34a cooperates in particular with a projection 42a arranged on the securing element 24a, in particular with a circumferential flange of the securing element 24a, for moving the securing element 24a as a function of the actuation of the actuating element 30 a. Preferably, the securing element 24a has at least one ramp-like region, which is formed by a projection 42a of the securing element 24 a. The ramp-like region is configured in correspondence with the ramp-like transmission element 34 a. Preferably, the slope of the slope-like region of the slope-like transmission element 34a and/or of the securing element 24a is less than 50 °, preferably less than 40 ° and particularly preferably less than 30 °. The ramp-like transmission element 34a may be formed by a ramp surface or configured as a spiral. The ramp-like region formed by the projection 42a of the safety element 24a is preferably part of the transmission unit 32 a.
The transmission element 34a, which is provided for moving the securing element 24a as a function of the actuation of the actuating element 30a, is arranged in at least one operating state in a contactless manner with the securing element 24 a. Preferably, the method comprises the steps of. The transmission element 34a is arranged in a contactless manner with the securing element 24a in the closed state of the quick-action clamping unit 18 a. In particular, the transmission element 34a is arranged at a distance from the securing element 24a, in particular from the projection 42a of the securing element 24a, in the closed state of the quick-action clamping unit 18a in a direction extending at least substantially parallel to the output axis 22 a. In order to establish contact between the securing element 24a, in particular the projection 42a of the securing element 24a, and the transmission element 34a, the actuating element 30a can be pivoted, in particular from the initial position, by an angle, in particular by an angle of less than 10 °. Only after the abutment of the transmission element 34a against the securing element 24a, in particular against the projection 42a of the securing element 24a, can a translational movement of the securing element 24a be achieved by a rotational movement of the transmission element 34 a.
The tool receiving device 10a comprises at least one locking unit 50a which secures the actuating element 30a, the quick clamping unit 18a and/or the locking unit 26a in at least one actuating position. The locking unit 50a preferably comprises at least one locking element 90a, which is provided for securing the actuating element 30a in the actuating position by means of a form-locking and/or force-locking connection. The latching element 90a can act directly on the actuating element 30a or indirectly on the actuating element 30a with one or more components, in particular components of the transmission unit 32a, interposed therebetween, in order to secure the actuating element 30a in the actuating position by means of a form-locking and/or force-locking connection. The locking unit 50a is preferably provided for securing the quick clamping unit 18a in the open state and for securing the locking unit 26a in the locking state, which prevents a rotational movement of the output spindle 16a by means of a form fit, in particular, as a result of securing the actuating element 30a in the actuating position.
The latching unit 50a is at least partially integrally formed with the transmission unit 32 a. Preferably, the latching element 90a of the latching unit 50a is formed in one piece with the ramp-like transmission element 34 a. In particular, the latching element 90a is designed as a flat surface or as a recess, which engages directly on the ramp-like transmission element 34a, in particular on a ramp surface. Preferably, the securing element 24a, in particular the projection 42a of the securing element 24a, rests against the locking element 90a in the secured state. Preferably, the securing element 24a, in particular the projection 42a of the securing element 24a, is pressed onto the locking element 90a in the secured state due to the spring force of the spring element 82 a. The movement of the actuating element 30a can advantageously be counteracted by friction and/or form fit. The transmission element 34a preferably comprises a flattened region, in particular a flat surface, which extends at least substantially perpendicularly to the pivot axis 92a, which forms the latching element 90a. The latch element 90a preferably forms a Plateau (Plateau) on the bearing element 88 a. A shoulder (Absatz) (not shown further here) is preferably formed between the latching element 90a and the transmission element 34a, in particular in order to achieve a secure holding in the safety position. Preferably, the locking element 90a is designed such that the safety position can be released by the super-lock (u berrasten), in particular because of the movement of the locking element 90a counter to the locking movement direction. By means of the described configuration of the tool receiving device 10a, a high level of handling comfort can advantageously be achieved, in particular because two units, in particular the stop unit 26a and the quick clamping unit 18a, can be handled substantially simultaneously as a result of the actuation of the actuating element 30 a. The operator can advantageously be protected from injury, since it can advantageously be ensured that during the replacement of the insertion tool: the rotation of the output spindle 16a can be reliably inhibited. Simple assembly and/or disassembly of the insertion tool 54a on the quick clamping unit 18a can be achieved.
Further embodiments of the invention are shown in fig. 5 to 11. The following description and the figures are essentially limited to the differences between the embodiments, wherein reference is made in principle also to the other embodiments, in particular to the figures and/or the description of fig. 1 to 4, with regard to identically designated components, in particular with regard to components having the same reference numerals. To distinguish between the embodiments, the letter a is followed by the reference numerals of the embodiments in fig. 1 to 4. In the embodiment of fig. 5 to 11, the letter a is replaced by the letter b or c.
Fig. 5 shows a schematic perspective view of an alternative tool receiving device 10b in the detached state from a portable power tool (not shown here further). The tool receiving device 10b can preferably be arranged in a portable power tool of a design substantially similar to the portable power tool 12a described in the description of fig. 1 to 4. The tool receiving device 10b comprises at least one output unit 14b comprising at least one rotatably driven output spindle 16b; and at least one quick clamping unit 18b arranged on the output spindle 16b, comprising at least one torque transmission element 20b (see also fig. 6) which is connected in a rotationally fixed manner to the output spindle 16b and at least one securing element 24b (see also fig. 6) which is mounted in particular axially movable along an output axis 22b of the output spindle 16 b. Furthermore, the tool receiving device 10b comprises at least one stop unit 26b (see also fig. 6 to 7) for securing the output spindle 16b against rotational movement. Furthermore, the tool receiving device 10b comprises at least one actuating unit 28b, which has at least one actuating element 30b (shown only in dashed lines in fig. 5) which is mounted in particular in a movable manner and by means of which the locking unit 26b can be actuated, in particular as a result of a movement of the actuating element 30 b. The actuating element 30b is provided for actuating the quick clamping unit 18b, in particular the securing element 24b, in particular as a result of a movement of the actuating element 30 b. The operating element 30b is pivotally supported about a pivot axis 92b of the operating element 30 b. The pivot axis 92b preferably extends at least substantially parallel to the output axis 22 a. The actuating element 30b is preferably configured as an actuating lever, which preferably has an actuating lever arm section 94b that can be gripped by an operator and an actuating lever arm section 96b that can in particular directly actuate the stop unit 26b. The actuating lever arm section 94b and the actuating lever arm section 96b are arranged on the two ends of the actuating element 30b facing away from one another about the pivot axis 92 b. Alternatively, the actuating element 30b is mounted so as to be movable in translation, wherein the actuating element 30b can have at least one ramp-shaped actuating projection in order to actuate the stop unit 26b by a translational movement of the actuating element 30 b.
The locking unit 26b preferably comprises a locking element 48b, which is provided for a form-locking and/or force-locking connection in at least one state, in particular in the open state of the quick-action clamping unit 18b, with a further locking element 86b of the locking unit 26b, in particular connected in a rotationally fixed manner to the output spindle 16 b. The stop element 48b is preferably mounted movably, in particular translationally, in a direction extending transversely, in particular at least substantially perpendicularly, to the output axis 22 b. However, it is also conceivable for the stop element 48b to be mounted movably in other directions which would seem to be of interest to a person skilled in the art. The stop element 48b preferably has at least one transverse projection 98b which is provided for engagement in a stop groove 100b of a further stop element 86b which is connected in particular in a rotationally fixed manner to the output spindle 16b (see also fig. 7). The transverse projection 98b preferably extends, in particular in the assembled state, from the base body of the stop element 48b in a direction extending at least substantially perpendicularly to the output axis 22b in the direction of the output spindle 16 b. Preferably, the transverse projections 98b extend at least substantially parallel to the main extension plane of the base body of the stop element 48 b. The main extension plane of the base body of the stop element 48b extends at least substantially perpendicularly to the output axis 22b, in particular in the assembled state.
The tool receiving device 10b comprises at least one transmission unit 32b having at least one, in particular ramp-shaped transmission element 34b, 36b, preferably two, in particular ramp-shaped transmission elements 34b, 36b, which are arranged on a stop element 48b of the stop unit 26b, in particular configured in one piece with the stop element 48b of the stop unit 26b (see also fig. 7). The ramp-shaped transmission elements 34b, 36b arranged on the stop element 48b are preferably provided for co-action with ramp projections 102a, 104b of the other transmission element 38b, 40b (see also fig. 8) of the transmission unit 32b, in particular in order to move the securing element 24b along a movement direction 44b of the securing element 24b extending at least substantially parallel to the output axis 22 b. The securing element 24b can be moved according to actuation of the actuating element 30b in a movement direction 44b, which extends transversely to a movement direction 46b of the stop unit 26b, in which a stop element 48b of the stop unit 26b can be moved according to actuation of the actuating element 30 b.
The transmission unit 32b preferably comprises at least two further transmission elements 38b, 40b, which have an at least substantially similar configuration. The description of one of the further transmission elements 38b, 40b can be read from the other of the further transmission elements 38b, 40b in a similar manner. The further transmission elements 38b, 40b are mounted in a translationally movable manner in a housing (not shown here further) of the portable power tool and are operatively connected to the actuating element 30b via ramp-like transmission elements 34b, 36 b. The further transmission elements 38b, 40b preferably cooperate with a projection 42b of the securing element 24b, in particular a circumferential flange, which is arranged on the securing element 24b, for moving the securing element 24b as a function of the actuation of the actuating element 30 b. The further transmission elements 38b, 40b are preferably embodied as tie rods. Preferably, the further transmission element 38b, 40b has a driving projection 106b (see also fig. 8) which is arranged transversely, in particular at least substantially perpendicularly, to the longitudinal axis of the further transmission element 38b, 40b and is provided for interaction with a projection 42b of the securing element 24b arranged on the securing element 24b, in particular a circumferential flange. The further transmission elements 38b, 40b preferably comprise a beveled protrusion 104b, which is provided for co-acting with the ramp-like transmission elements 34b, 36 b. The beveled projections 104b preferably extend transversely, in particular at least substantially perpendicularly, to the longitudinal axis of the further transmission element 38b, 40b, in particular at the end of the further transmission element 38b, 40b facing away from the driving projections 106b of the further transmission element 38b, 40 b. Preferably, the beveled protrusion 104b comprises at least one beveled region, in particular an abutment surface inclined to the longitudinal axis of the further transmission element 38b, 40 b. The ramp-like region of the ramp projection 104b is preferably configured in correspondence with the ramp-like transmission elements 34b, 36 b. In particular, the ramp-like region of the ramp projection 104b has a slope corresponding to the ramp-like transmission elements 34b, 36 b.
The tool receiving device 10b comprises at least one latching unit 50b which secures the actuating element 30b, the quick-action clamping unit 18b and/or the locking unit 26b in at least one actuating position, wherein the latching unit 50b is at least partially formed integrally with the transmission unit 32 b. Preferably, the locking unit 50b comprises at least one locking element 90b, in particular at least two locking elements 90b, 108b (see also fig. 7). The latch elements 90b, 108b have at least substantially similar configurations such that a description of one of the two latch elements 90b, 108b can be read onto the other of the latch elements 90b, 108 b. The latching elements 90b, 108b are preferably formed in one piece with the ramp-like transmission elements 34b, 36 b. In particular, the latching elements 90b, 108b are embodied as flat faces or recesses, which engage directly on the ramp-like transmission elements 34b, 36b, in particular on a ramp surface. Preferably, the ramp projection 104b bears against the latching elements 90b, 108b in the secured state of the actuating element 30 b. Preferably, the spring force of the spring element 82b of the quick-action clamping unit 18b presses the further transmission element 38b, 40b, in particular the ramp projection 104b, against the latching element 90b, 108b in the secured state, as a result of which, in particular, a movement of the further transmission element 38b, 40b and thus of the actuating element 30b can be prevented. The further transmission elements 38b, 40b, in particular the beveled projections 104b, preferably comprise flattened regions, in particular flat faces (see also fig. 8), which are provided for interaction with the latching elements 90b, 108 b. Preferably, the flattened region is arranged between two ramp-like regions of the further transmission element 38b, 40b, in particular of the ramp projection 104 b. Preferably, the locking elements 90b, 108b are configured such that the safety position can be released by the superlocking, in particular because of the movement of the locking elements 90b, 108b counter to the locking movement direction. As regards the further features of the tool receiving device 10b shown in fig. 5 to 8, reference can in principle be made to the description of the tool receiving device 10a shown in fig. 1 to 4, which description can be read substantially similarly to the tool receiving device 10b shown in fig. 5 to 8.
Fig. 9 shows a schematic perspective view of a further alternative tool receiving device 10c in the detached state from a portable power tool (not shown here further). The tool receiving device 10c can preferably be arranged in a portable power tool of a design substantially similar to the portable power tool 12a described in the description of fig. 1 to 4. The tool receiving device 10c comprises at least one output unit 14c comprising at least one rotatably driven output spindle 16c; and at least one quick clamping unit 18c arranged on the output spindle 16c, which comprises at least one torque transmission element 20c (see also fig. 10 and 11), which is in particular in at least one state in rotationally fixed connection with the output spindle 16c, and at least one securing element 24c (see also fig. 10 and 11), which is in particular secured against axial movement along the output axis 22c of the output spindle 16 c. The securing element 24c is mounted in conjunction with the output spindle 16c in a manner that is movable, in particular rotatable about the output axis 22 c. Furthermore, the tool receiving device 10c comprises at least one stop unit 26c (see fig. 11, shown in dashed lines) for securing the output spindle 16c against rotational movement. However, it is also conceivable for the tool receiving device 10c to be constructed independently of the stop unit 26 c. Furthermore, the tool receiving device 10c comprises at least one actuating unit 28c, which has at least one actuating element 30c (shown only in dashed lines in fig. 9 and 10), which is mounted in a particularly movable manner and by means of which the locking unit 26c and/or the quick clamping unit 18c can be actuated, in particular as a result of a movement of the actuating element 30 c. The actuating element 30c is provided for actuating the quick clamping unit 18c, in particular the torque transmission element 20c, in particular due to a movement of the actuating element 30 c. The tool receiving device 10c shown in fig. 9 to 11 differs from the previous embodiments in particular in that it is assigned to the respective securing element 24a in the previous embodiments; 24b are partially associated with the torque transmission element 20c in the exemplary embodiments shown in fig. 9 to 11, for example, being mounted so as to be movable relative to the output shaft 16c, etc.
The torque transmission element 20c preferably comprises a plurality of torque transmission projections 66c, 68c (only two torque transmission projections 66c, 68c are shown in fig. 9 and 10), in particular at least two, preferably at least three and particularly preferably at least four. The torque transmission projections 66c, 68c are preferably arranged on the torque transmission element 20c uniformly distributed along the circumferential direction 70c of the quick clamping unit 18c, in particular according to a symmetry of n numbers.
The securing element 24c preferably comprises at least one axial securing projection 72c, 74c, 76c, 78c, in particular at least four axial securing projections 72c, 74c, 76c, 78c (see also fig. 9 and 10). The axial securing projections 72c, 74c, 76c, 78c are preferably arranged on the securing element 24c in a uniformly distributed manner along the circumferential direction 70c of the quick clamping unit 18c, in particular symmetrically according to the number n. The axial securing projections 72c, 74c, 76c, 78c cooperate with the receiving recesses 120c, 122c of the torque transmission element 20c for axially clamping the insertion tool. Preferably, the insertion tool, in particular a hub of the insertion tool (not shown further here), is arranged axially in a direction extending at least substantially parallel to the output axis 22c, between the axial securing projections 72c, 74c, 76c, 78c and the torque transmission element 20c, in particular in the receiving recesses 120c, 122c, in the state secured to the output spindle 16c by means of the quick clamping unit 18 c. In the state clamped between the torque transmission element 20c and the axial securing projections 72c, 74c, 76c, 78c, the insert tool, in particular the hub of the insert tool, rests in the circumferential direction 70c against the torque transmission projections 66c, 68 c. The receiving recesses 120c, 122c of the torque transmission element 20c are arranged such that they preferably form a cross shape having four, in particular equally long sides, viewed in a plane extending at least substantially perpendicularly to the output axis 22c, wherein the sides of the cross extend conically from the outside to the inside in the direction of the output axis 22c, in particular are configured in the manner of triangles or drops. The securing element 24c, in particular the axial securing projections 72c, 74c, 76c, 78c, are preferably also arranged such that they preferably form a cross shape having four, in particular equally long sides, when viewed in a plane extending at least substantially perpendicularly to the output axis 22c, wherein the sides of the cross extend conically from the outside to the inside in the direction of the output axis 22c, in particular are configured in the manner of triangles or drops. The insert tool, in particular the hub of the insert tool, has a configuration corresponding to the shape or arrangement of the receiving recesses 120c, 122c and to the shape or arrangement of the axial securing projections 72c, 74c, 76c, 78 c.
Preferably, torque transmission element 20c has an abutment edge 80c, in particular four abutment edges 80c (only two abutment edges 80c are shown in fig. 9 and 10), which, for torque transmission, bear against the insertion tool (not shown further here) in the clamped state by means of quick clamping unit 18c, in particular against the hub of the insertion tool. Preferably, the contact edges 80c each limit a step of the torque transmission element 20c that extends parallel to the clamping surface of the torque transmission element 20 c. The abutment edge 80c preferably limits the torque transmission projections 66c, 68c. In particular, the axial securing projections 72c, 74c, 76c, 78c at least substantially completely cover the receiving recesses 120c, 122c in the closed state of the quick clamping unit 18 c. In the open state of the quick-clamping unit 18c, the axial securing projections 72c, 74c, 76c, 78c release the receiving recesses 120c, 122c at least substantially completely, in particular in order to be able to arrange an insertion tool in the receiving recesses 120c, 122c. Preferably, the insertion tool can be removed from the receiving recess 120c, 122c, in particular in the open state of the quick-clamping unit 18c, by a pure movement in a direction extending at least substantially parallel to the output axis 22c when being removed from the quick-clamping unit 18 c. The torque transmission element 20c is mounted on the output shaft 16c in particular in a translationally movable manner in a direction extending at least substantially parallel to the output axis 22c. Furthermore, the torque transmission element 20c is rotatably mounted with respect to the output shaft 16c and with respect to the securing element 24c, in particular along a limited path of movement, in the circumferential direction 70 c. Preferably, the quick clamping unit 18c comprises at least one spring element 82c for loading the torque transmission element 20c with a spring force, in particular a spring force acting along the output axis 22c, preferably in the direction of the securing element 24 c.
Preferably, the tool receiving device 10c comprises at least one transmission unit 32c (shown only in dashed lines in fig. 9 and 10) which is provided for converting a movement of the actuating element 30c, in particular for actuating the stop unit 26c, into a movement of the torque transmission element 20 c. The transmission unit 32c preferably comprises at least one, in particular ramp-shaped transmission element (not shown further here, but constructed similarly to the other embodiments), which is provided for converting a translational or rotational movement of the actuating element 30c into a translational movement of the torque transmission element 20c, in particular in a direction extending at least substantially parallel to the output axis 22c of the output spindle 16 c. The transmission unit 32c preferably comprises at least one further transmission element (not shown further here, but constructed similarly to the other embodiments), which interacts with a projection 42c, in particular a circumferential flange (see fig. 9 to 11), arranged on the torque transmission element 20c, for moving the torque transmission element 20c as a function of the actuation of the actuating element 30 c. In particular, the further transmission element is arranged in a contactless manner with the torque transmission element 20c in at least one operating state, in particular analogously to the other embodiments.
The tool receiving device 10c preferably comprises at least one guide unit 110c, which is provided for guiding the movement of the torque transmission element 20c and for limiting the maximum movement path, in particular at least one maximum rotation path, of the torque transmission element 20c relative to the output spindle 16 c. The guide unit 110c is preferably configured as a slotted guide, wherein at least one slotted element 112c of the guide unit 110c is arranged in particular in a stationary manner on the output spindle 16c, and at least one further slotted element 114c of the guide unit 110c is arranged in particular in a stationary manner on the torque transmission element 20 c. Preferably, the guiding unit 110c is provided for guiding the axial and rotational movement of the torque transmitting element 20c relative to the output spindle 16 c. The torque transmission element 20c can preferably carry out a stepped movement with respect to the output spindle 16c, for example an axial movement following a rotational movement or vice versa, by means of the guide unit 110c, or the torque transmission element 20c can carry out a superimposed movement with respect to the output spindle 16c, for example a superimposed axial movement with a rotational movement, by means of the guide unit 110 c. The torque transmission element 20c can be moved by the guide unit 110c, preferably with respect to the securing element 24c, in particular in order to be able to effect a transfer of the quick clamping unit 18c from the open state into the closed state or vice versa.
The guide unit 110c preferably has at least one slotted guide element 112c, which is arranged in particular in a stationary manner on the output spindle 16c and is connected to the torque transmission element 20c for the rotational movement of the torque transmission element 20 c. Preferably, the guide unit 110c comprises at least one further chute element 114c, which has at least two rail sections 116c, 118c extending transversely to one another, in particular an axially extending rail section 116c and a surrounding rail section 118c. Preferably, the slotted-guide element 112c is embodied as a pin, which is connected in a rotationally fixed manner to the output shaft 16 c. However, it is also contemplated that the chute member 112c has other configurations that would appear to be of interest to one skilled in the art, such as, for example, configurations that are convex, concave, tab, pitch, etc. The chute element 112c preferably extends transversely, in particular at least substantially perpendicularly, to the output axis 22c, in particular in the configuration of the chute element 112c as a peg. Preferably, the slotted element 112c extends transversely through the output spindle 16c, in particular at least into the securing element 24c or beyond the securing element 24c into the torque transmission element 20c, in particular into a further slotted element 114c arranged on the torque transmission element 20 c. Chute member 112c can extend beyond output spindle 16c on one, both, or multiple sides. The securing element 24c is preferably connected in a rotationally fixed manner to the output shaft 16c by means of a slotted guide element 112 c. In particular, the securing element 24c is arranged axially along the output axis 22a on the output spindle 16c by means of the slotted guide element 112 c. The further chute element 114c is preferably configured as a guide slot. Preferably, the chute member 112c is embedded in the further chute member 114 c. Preferably, the guide unit 110c comprises two further slotted elements 114c, which are each configured as a guide slot, which are arranged mirror-symmetrically on the torque transmission element 20 a. Preferably, the chute element 112c is embedded in two further chute elements 114 c. The torque transmission element 20c is preferably connected in a rotationally fixed manner to the output shaft 16c at least in the closed state of the quick clamping unit 18c by means of the interaction of the slotted guide element 112c and one or more further slotted guide elements 114 c. As regards the further features of the tool receiving device 10c shown in fig. 9 to 11, reference can in principle be made to the description of the tool receiving device 10a shown in fig. 1 to 4, which description can be read substantially similarly to the tool receiving device 10c shown in fig. 9 to 11.
Claims (14)
1. A tool receiving device for a portable machine tool, in particular an angle grinder, has:
at least one output unit (14 a;14b;14 c) comprising at least one output spindle (16 a;16b;16 c) which can be driven in rotation;
At least one quick clamping unit (18 a;18b;18 c) arranged on the output spindle (16 a;16b;16 c), comprising at least one torque transmission element (20 a;20b;20 c) and at least one securing element (24 a;24b;24 c), which are in particular axially movably mounted along an output axis (22 a;22b;22 c) of the output spindle (16 a;16b;16 c), which is in particular rotationally fixed to the output spindle (16 a;16b;16 c);
At least one stop unit (26 a;26b;26 c) for securing the output spindle (16 a;16b;16 c) against rotational movement; and
At least one actuating unit (28 a;28b;28 c) having at least one actuating element (30 a;30b;30 c), which is in particular mounted so as to be movable, by means of which the locking unit (26 a;26b;26 c) can be actuated, in particular as a result of a movement of the actuating element (30 a;30b;30 c),
It is characterized in that the method comprises the steps of,
The actuating element (30 a;30b;30 c) is provided for actuating the quick clamping unit (18 a;18b;18 c), in particular the securing element (24 a;24b;24 c), or the torque transmission element (20 a;20b;20 c), in particular as a result of a movement of the actuating element (30 a;30b;30 c).
2. Tool receiving device according to claim 1, characterized in that at least one transmission unit (32 a;32b;32 c) is provided, which is provided for converting a movement of the actuating element (30 a;30b;30 c) for actuating the stop unit (26 a;26b;26 c) into a movement of the securing element (24 a;24 b) or the torque transmission element (20 c).
3. Tool receiving device according to claim 1 or 2, characterized in that at least one transmission unit (32 a;32 b) is provided, which has at least one transmission element (34 a;34b;34 c), in particular in the form of a ramp, which is provided for converting a translational or rotational movement of the actuating element (30 a;30 b) into a translational movement of the securing element (24 a;24 b), in particular in a direction extending at least substantially parallel to an output axis (22 a;22 b) of the output spindle (16 a;16 b).
4. Tool receiving device according to one of the preceding claims, characterized in that at least one transmission unit (32 a;32 b) is provided, which has at least one, in particular further transmission element (34 a;38b, 40 b) which cooperates with a projection (42 a;42 b), in particular a circumferential flange, arranged on the securing element (24 a;24 b) for moving the securing element (24 a;24 b) as a function of the actuation of the actuating element (30 a;30 b).
5. Tool receiving device according to one of the preceding claims, characterized in that at least one transmission unit (32 a;32 b) is provided, which has at least one, in particular further transmission element (34 a;38b, 40 b) for moving the securing element (24 a;24 b) as a function of the actuation of the actuating element (30 a;30 b), wherein the transmission element (34 a;38b, 40 b) is arranged in at least one operating state in a contactless manner with the securing element (24 a;24 b).
6. Tool receiving device according to any one of the preceding claims, wherein the securing element (24 b) is movable according to actuation of the actuating element (30 b) in a movement direction (44 b) which extends transversely to a movement direction (46 b) of the stop unit (26 b), in which movement direction the stop element (48 b) of the stop unit (26 b) is movable according to actuation of the actuating element (30 b).
7. Tool receiving device according to one of the preceding claims, characterized in that at least one transmission unit (32 b) is provided, which has at least one transmission element (34 a;36 b), in particular in the form of a ramp, which is arranged on a stop element (48 b) of the stop unit (26 b), in particular in one-piece construction with the stop element (48 b) of the stop unit (26 b).
8. Tool receiving device according to one of the preceding claims, characterized in that at least one latching unit (50 a;50 b) is provided, which secures the actuating element (30 a;30 b), the quick clamping unit (18 a;18 b) and/or the stop unit (26 a;26 b) in at least one actuating position.
9. A tool receiving device according to any one of the preceding claims, wherein
At least one locking unit (50 a;50 b) is provided, which secures the actuating element (30 a;30 b), the quick clamping unit (18 a;18 b) and/or the locking unit (26 a;26 b) in at least one actuating position; and
At least one transmission unit (32 a;32 b) is provided, wherein the locking unit (50 a;50 b) is at least partially formed integrally with the transmission unit (32 a;32 b).
10. Tool receiving device according to one of the preceding claims, characterized in that at least one guide unit (110 c) is provided, which is provided for guiding the movement of the torque transmission element (20 c) and for limiting the maximum movement path, in particular at least one maximum rotation path, of the torque transmission element (20 c) relative to the output spindle (16 c).
11. Tool receiving device according to claim 10, characterized in that the guide unit (110 c) is configured as a slotted guide, wherein at least one slotted element (112 c) of the guide unit (110 c) is arranged in particular in a stationary manner on the output spindle (16 c), and at least one further slotted element (114 c) of the guide unit (110 c) is arranged in particular in a stationary manner on the torque transmission element (20 c).
12. Tool receiving device according to claim 10 or 11, characterized in that the guide unit (110 c) has at least one slotted element (112 c), which is arranged in particular in a stationary manner on the output spindle (16 c), and which is connected to the torque transmission element (20 c) for the rotational drive of the torque transmission element (20 c).
13. Tool receiving device according to any one of claims 10 to 12, characterized in that the guide unit (110 c) has at least one, in particular further, chute element (114 c) having at least two rail sections (116 c, 118 c) extending transversely relative to one another, in particular an axially extending rail section (116 c) and a surrounding rail section (118 c).
14. Portable machine tool, in particular angle grinder, having at least one tool receiving device according to one of the preceding claims.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102021213564.1 | 2021-11-30 | ||
| DE102022203059.1 | 2022-03-29 | ||
| DE102022203059.1A DE102022203059A1 (en) | 2021-11-30 | 2022-03-29 | Tool holding devices for portable machine tools, in particular angle grinders |
| PCT/EP2022/079865 WO2023099084A1 (en) | 2021-11-30 | 2022-10-26 | Tool-receiving devices for portable machine tools, in particular angle grinders |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN118338986A true CN118338986A (en) | 2024-07-12 |
Family
ID=91768789
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202280079537.4A Pending CN118338986A (en) | 2021-11-30 | 2022-10-26 | Tool receiving device for a portable machine tool, in particular an angle grinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN118338986A (en) |
-
2022
- 2022-10-26 CN CN202280079537.4A patent/CN118338986A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US9855649B2 (en) | Spindle locking device | |
| EP2752278B1 (en) | Power tool having improved tool accessory securing mechanism | |
| US4467896A (en) | Locking mechanism for a rotary power machine | |
| EP2548698B1 (en) | Electric power tool | |
| CN110505941B (en) | Grinding device arrangement, grinding device, cartridge tool and machine tool system | |
| US20240227033A1 (en) | Power Tool | |
| CZ2003851A3 (en) | System with a tool clamp, a tool clamp per se and a put-on tool | |
| KR102431897B1 (en) | Quick clamping device for portable power tools, in particular angle grinders, with at least one rotary driveable output shaft | |
| US9486934B2 (en) | Accessory clamping mechanism and power tool having the same | |
| US9908256B2 (en) | Cutting-depth limiting device | |
| CA2919722A1 (en) | A machine tool with tool accommodating device | |
| US9623583B2 (en) | Device for limiting the depth of a cut | |
| CN109843486B (en) | Quick-action clamping device for a portable power tool and portable power tool | |
| CN106660201B (en) | Portable machine tool | |
| US7451546B2 (en) | Jigsaw machine | |
| CN118338986A (en) | Tool receiving device for a portable machine tool, in particular an angle grinder | |
| US20210276146A1 (en) | Quick Clamping Device for a Portable Machine Tool, in Particular an Angle Grinder, Comprising at Least One Output Shaft That Can Be Rotatably Driven | |
| US20150087211A1 (en) | Machine Tool Braking Device | |
| US10058972B2 (en) | Machine tool clamping device | |
| CN111867782B (en) | Quick clamping device | |
| GB2486966A (en) | Saw Blade Clamping Device With Pivoting Clamping Elements | |
| CN111185883A (en) | Clamping unit, battery device, hand-held power tool and hand-held power tool system | |
| CN118613349A (en) | Tool interface device, insert tool with a tool interface device, and machine tool system with an insert tool and a machine tool | |
| CN114901426A (en) | Protective hood adapter device and machine tool system having a protective hood adapter device | |
| CN112743428A (en) | Hand-held power tool |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication |