CN113001478A

CN113001478A - Hand-held power tool device for a hand-held power tool and drill hammer

Info

Publication number: CN113001478A
Application number: CN202011504230.3A
Authority: CN
Inventors: F·班特尔
Original assignee: Robert Bosch GmbH
Current assignee: Robert Bosch GmbH
Priority date: 2019-12-19
Filing date: 2020-12-18
Publication date: 2021-06-22
Also published as: DE102019220153A1

Abstract

Hand-held power tool device (10) for a hand-held power tool, in particular a drill hammer (12), having: at least one impact mechanism unit (14) for generating impact pulses, in particular axial impact pulses, to an application tool (16) arranged in a tool receptacle (66) of the hand-held power tool, at least one planetary gear (18), and at least one torque limiting unit (20) for limiting a torque acting on the application tool (16), wherein the torque limiting unit (20) has at least one setting unit (22) for setting a detent torque for limiting a screwing torque in a screwing function. The invention also relates to a corresponding drill hammer.

Description

Hand-held power tool device for a hand-held power tool and drill hammer

Technical Field

The invention relates to a hand-held power tool device and a corresponding drill hammer/electric hammer.

Background

A hand-held power tool device for a hand-held power tool, in particular a drill hammer, is known, which has: at least one impact mechanism unit for generating, in particular, axial impact pulses for an application tool that can be arranged in a tool receiver of the hand-held power tool; at least one planetary transmission; and at least one torque limiting unit for limiting the torque applied to the application tool.

Disclosure of Invention

The present application is based on a hand-held power tool device for a hand-held power tool, in particular a drill hammer, having: at least one impact mechanism unit for generating, in particular, axial impact pulses for an application tool that can be arranged in a tool receiver of the hand-held power tool; at least one planetary transmission; and at least one torque limiting unit for limiting the torque applied to the application tool.

It is proposed that the torque limiting unit has at least one adjusting unit for adjusting a locking torque for limiting a screwing torque in a screwing function. A high operator friendliness can advantageously be achieved for a hand-held power tool device for a hand-held power tool. Advantageously, a large working range of the hand-held power tool device can be provided. Advantageously, a high level of safety can be ensured for the user. The screwing torque limited to the user's desire can be realized in a structurally simple manner, in particular in the case of high-torque hand-held power tools.

The setting unit is in particular provided for limiting the screwing torque to different values depending on the magnitude of the set latching torque. In particular, the setting unit is arranged, in particular, at least for the most part on an element of the planetary gear, preferably of the planetary gear. The adjustment unit is in particular provided for generating at least one adjustable detent torque, which in particular interacts with at least one element of the planetary gear, in particular a ring gear of the planetary gear. Preferably, the adjustment unit is provided for damping a rotation of an element of the planetary gear, in particular by means of a detent torque. Preferably, the rotational energy of the element of the planetary gear set is blocked if the reaction torque generated by the screw during the screwing operation is smaller than the set detent torque. In particular, at least one action axis of the setting unit, along which at least one element of the setting unit, in particular a transmission element and/or a latching element, for example a latching ball, acts on the element of the planetary gear, is at least substantially perpendicular, preferably exactly perpendicular, to the axis of rotation of the tool holder of the hand-held power tool. "substantially perpendicular" is intended here to define, in particular, an orientation of a direction relative to a reference direction, wherein the direction and the reference direction, in particular as viewed in a projection plane, enclose an angle of 90 ° and the angle has a maximum deviation, in particular of less than 8 °, advantageously of less than 5 ° and particularly advantageously of less than 2 °. It is also conceivable for the axis of action of the setting unit to extend at least substantially parallel, preferably exactly parallel, to the axis of rotation of the tool holder. "substantially parallel" is to be understood here to mean, in particular, an orientation of a direction relative to a reference direction, in particular in a plane, the deviation of the direction relative to the reference direction being, in particular, less than 8 °, advantageously less than 5 ° and particularly advantageously less than 2 °. The axis of rotation of the tool holder is in particular at least substantially parallel, preferably exactly parallel, to the axis of rotation of the element of the planetary gear. It is also conceivable for the axis of rotation of the tool holder to extend at least substantially perpendicularly, preferably exactly perpendicularly, to the axis of rotation of the element of the planetary gear. In particular, the axis of action of the element of the setting unit is at least substantially perpendicular, preferably exactly perpendicular, to the axis of rotation of the element of the planetary gear. It is also conceivable for the axis of action of the setting unit to run at least substantially parallel, preferably exactly parallel, to the axis of rotation of the element of the planetary gear. In particular, the action axis of the element of the setting unit is at least substantially perpendicular, preferably exactly perpendicular, to the action axis of the striking mechanism unit, along which the striking pulse can be transmitted to the application tool which can be arranged in the tool receptacle. It is also conceivable for the axis of action of the element of the setting unit to be at least substantially parallel, in particular exactly parallel, to the axis of action of the striking-mechanism unit. In particular, the axis of action of the striking-mechanism unit is at least substantially parallel, preferably exactly parallel, to the axis of rotation of the tool holder and/or to the axis of rotation of the element of the planetary gear. In particular, the action axis of the element of the setting unit is configured as a movement axis of the element of the setting unit, along which the element of the setting unit can be moved, preferably axially, or about which the element of the setting unit can be moved rotationally. Preferably, the setting unit has at least one axis of rotation about which at least one further element of the setting unit, in particular a setting element of the setting unit, preferably a rotary sleeve of the setting unit or the like, can be rotated. In particular, the axis of rotation of the further element of the setting unit is at least substantially perpendicular, preferably exactly perpendicular, to the axis of movement of the element of the setting unit. It is also conceivable that the axis of rotation of the further element of the setting unit is at least substantially parallel, preferably exactly parallel, to the axis of movement of the element of the setting unit. In particular, the axis of rotation of the further element of the setting unit is at least substantially perpendicular, preferably exactly perpendicular, to the axis of action of the striking mechanism unit, to the axis of rotation of the tool holder and/or to the axis of rotation of the element of the planetary gear.

In particular, the setting unit has at least one further axis of movement along which at least one additional element of the setting unit, in particular a transmission element, can be moved, wherein the transmission element is in particular provided for acting on the element, in particular a transmission element, of the setting unit. It is also conceivable for the additional element to be rotatable about the further axis of movement. The further movement axis of the additional element of the setting unit preferably extends at least substantially perpendicularly, particularly preferably exactly perpendicularly, to the movement axis of the element of the setting unit and/or to the axis of rotation of the further element of the setting unit. It is also conceivable for the further axis of movement of the additional element of the setting unit to be oriented at least substantially parallel, preferably exactly parallel, to the axis of movement of the element of the setting unit and/or to the axis of rotation of the further element of the setting unit. In particular, the further axis of movement of the additional element of the setting unit is at least substantially parallel, preferably exactly parallel, to the axis of rotation of the tool holder, to the axis of rotation of the element of the planetary gear set and/or to the axis of action of the striking mechanism unit. It is also conceivable for the further axis of movement of the additional element of the setting unit to be at least substantially perpendicular, preferably exactly perpendicular, to the axis of rotation of the tool holder, to the axis of rotation of the element of the planetary gear set and/or to the axis of action of the striking mechanism unit.

In particular, the impact mechanism unit is designed as a pneumatic impact mechanism unit. In particular, the setting unit is at least partially, preferably completely, mechanically designed. It is also conceivable for the setting unit to be of at least partially pneumatic, electronic and/or hydraulic design. In particular, a hand-held power tool has a housing. In particular, the setting unit is arranged at least partially, preferably at least substantially completely, particularly preferably completely, in the housing. "at least substantially completely" is to be understood in particular to mean at least 50%, preferably at least 75% and particularly preferably at least 90% of the total volume and/or total mass of the object, in particular of the setting unit. It is also conceivable for the setting unit to be arranged at least partially, preferably at least substantially completely, particularly preferably completely, outside the housing. In particular, at least the further element of the setting unit, in particular the rotary sleeve, is rotatably mounted on the housing.

In particular, it is conceivable for the hand-held power tool device to have at least one control and/or regulating unit, which is provided to determine an optimal detent torque. Preferably, the control and/or regulating unit is arranged at least substantially completely within the housing. It is also conceivable that the control and/or regulating unit is arranged at least partially on an external device, such as a smartphone, tablet, remote control, etc. Preferably, the control and/or regulating unit is provided for transmitting the determined optimum detent torque to the regulating unit, in particular automatically. Preferably, the optimum detent torque can be determined from operating data and/or task data, which can be sensed, in particular, by at least one sensor. It is also conceivable for the user to enter at least operating data and/or task data via the interface unit. The interface unit is in particular embodied, for example, as a touch screen, a keyboard or a rotary actuator. The operational data may include, for example, motor power, rotational speed of the tool, temperature, operational time, and the like. The task data include, for example, workpiece material, workpiece dimensions, screw characteristics, and the like. Preferably, the interface unit is arranged at least partially, particularly preferably completely, on the housing of the hand-held power tool. In particular, it is conceivable for the interface unit to be arranged on an external device. It is also conceivable that the control and/or regulating unit is arranged at least partially on a garment, in particular a safety garment or a work garment, such as gloves, helmets, goggles, shoes, trousers, etc. It is also conceivable for the hand-held power tool device to have a communication unit, which is provided in particular for transmitting information, in particular operating data and/or task data, between the setup unit and the external device and/or the clothing item.

It is also proposed that the adjustment unit is provided for the stepless adjustment of the detent torque. Advantageously, the hand-held power tool device can be adapted to different operating requirements. A high level of operational safety of the hand-held power tool device can be advantageously ensured. In particular, the setting unit can set the detent torque between the minimum detent torque and the maximum detent torque. In particular, the screwing torque in the screwing function can be limited if the detent torque has a value at least smaller than the maximum detent torque. The setting unit can preferably set a maximum detent torque, wherein in particular a maximum screwing torque in the screwing function can be transmitted at the maximum detent torque. In particular, the screwing torque can be limited depending on the magnitude of the latching torque. Preferably, the magnitude of the screwing torque limited by the screwing torque increases with the magnitude of the latching torque. It is also conceivable that the magnitude of the screwing torque limited by the screwing torque decreases with increasing detent torque. In particular, torque can be limited only in the screwing function. It is also conceivable to limit the torque in a further function. In particular, it is conceivable that the detent torque can be limited in steps. It is also conceivable to switch between a stepless setting of the detent torque and a stepped setting of the detent torque.

It is also proposed that the adjustment unit has at least one rotatably mounted adjustment element, in particular the aforementioned adjustment element, in particular a rotary sleeve, in particular the aforementioned rotary sleeve, wherein the axis of rotation of the adjustment element, in particular the aforementioned axis of rotation of the adjustment element, extends transversely to the axis of rotation of the ring gear of the planetary gear, in particular the aforementioned axis of rotation of the aforementioned ring gear. Advantageously, a high user convenience of the setting unit can be ensured. An arrangement of the adjustment element which ensures high protection against damage can advantageously be provided. In particular, the setting element is provided for setting the detent torque. In particular, the detent torque can be set steplessly and/or steplessly by means of the setting element. In particular, the setting element is provided for setting a detent torque corresponding to the maximum detent torque or less than the maximum detent torque. In particular, the setting element can be actuated at least in the screwing function. Preferably, the operation of the setting element is locked in a function different from the screwing function. Preferably, the setting element is arranged on the housing. In particular, the setting element is arranged rotatably on the housing. Preferably, the setting element is formed by a rotating sleeve. It is also conceivable for the axis of rotation of the setting element to be oriented at least substantially parallel, preferably exactly parallel, to the axis of rotation of the ring gear of the planetary gear. It is also conceivable for the axis of rotation of the setting element to extend at least substantially parallel, preferably exactly parallel, to the axis of rotation of the tool holder and/or to the axis of action of the striking-mechanism unit. It is also conceivable for the setting element to be formed by a key, a touch screen or the like. In particular, the setting element can be actuated manually. It is also conceivable that the setting element can be actuated automatically, preferably by a control and/or regulating unit.

It is also proposed that the adjustment unit has at least one spring element and at least one rotatably mounted adjustment element, in particular the aforementioned adjustment element, in particular a rotary sleeve, in particular the aforementioned rotary sleeve, wherein the adjustment element is provided for adjusting a spring force of the spring element acting in the radial direction on a ring gear of the planetary gear, in particular the aforementioned ring gear. Advantageously, a compact hand-held power tool device can be provided, which at the same time has a large working range. In particular, the main extension axis of the spring element extends at least substantially perpendicularly, particularly preferably perpendicularly, to the axis of rotation of the ring gear. The term "main axis of extension" of an object is to be understood here to mean, in particular, an axis which is parallel to the longest edge of the smallest geometric cube which surrounds the object just completely. In particular, the spring element is arranged in the radial direction of the ring gear. It is also conceivable for the spring element to be arranged on the ring gear such that the main extension axis of the spring element extends at least substantially parallel to the rotational axis of the ring gear, wherein in particular the spring force of the spring element acts on the ring gear parallel to the rotational axis of the ring gear. In particular, the spring element can be pretensioned by the setting element. Preferably, the detent torque increases with spring force. It is also conceivable that the detent torque decreases with increasing spring force of the spring element. In particular, the spring element is arranged at least substantially completely, particularly preferably completely, in the housing. In particular, the spring element can be pretensioned by rotating the setting element. In particular, the spring element is designed as a helical spring. It is also conceivable for the spring element to be constructed as a known spring tongue, helical continuation, bending spring, torsion spring or disc spring. In particular, the adjustment unit has at least one latching element, which is provided at least with a latching pin for producing a latching state, in particular with a toothed ring. In particular, the latching element is arranged between the spring element and the toothed ring. In particular, the detent element can be acted upon by a spring force of the spring element, wherein the spring force is directed in particular radially onto the ring gear. In particular, the detent elements are spherically formed. It is also conceivable for the detent element to be of polygonal, preferably square, design. In particular, the toothed ring has at least one latching notch, preferably a plurality of latching notches. In particular, the latching element is provided for latching into at least one latching recess of the ring gear in at least one operating state. In particular, if the reaction torque during screwing exceeds the set detent torque, the detent element is moved away from the detent position in the detent recess of the toothed ring, so that in particular the toothed ring can be rotated. Preferably, the detent notches are arranged at intervals along a circumference of the toothed ring, which extends in a plane perpendicular to the axis of rotation of the toothed ring. In particular, the latching notches have a polygonal, preferably square, cross section. It is also conceivable for the detent notches to have a round cross section. In particular the latching notches have an at least substantially uniform cross section. "at least substantially identical" is to be understood in particular to mean identical apart from mirror images, preferably point mirror images, particularly preferably also shaft mirror images. It is also conceivable for the detent notches to have different cross sections. In particular, it is also conceivable for the detent element to limit the screwing torque in the screwing function by frictional engagement with the toothed ring. In particular, the latching element has a diameter which at least substantially corresponds to the cross-sectional diameter of the spring element. "at least substantially" is to be understood in this context to mean, in particular, that the deviation from the specified value is less than 25%, preferably less than 10% and particularly preferably less than 5% of the specified value. It is also conceivable for the cross-sectional diameter of the spring element to be different from the diameter of the latching element. In particular, it is conceivable for the detent element to be formed integrally with the spring element. "integral" is to be understood in particular to mean at least a material-to-material connection, for example by a welding process, an adhesive process, an injection-molding attachment process, and/or other processes which are considered to be expedient by the person skilled in the art, and/or advantageously to mean a molding into one piece, for example by production from a casting and/or by a single-component or multi-component injection method and advantageously from a single blank.

It is also proposed that the adjustment unit has at least one rotatably mounted adjustment element, in particular the aforementioned adjustment element, and at least one transmission element, in particular the aforementioned transmission element, in particular an actuator (Stellglied), wherein the adjustment element is provided for acting on the transmission element via a transmission element, in particular the aforementioned transmission element, in particular an adjustment wedge, of the adjustment unit, which transmission element is provided for acting on the spring element at least along a main extension axis of the spring element, in particular the aforementioned spring element, of the adjustment unit. Advantageously, the hand-held power tool device is user-friendly to adapt to the current work task. In particular, the spring element is arranged between the transmission element and the ring gear. In particular, the spring element can be pretensioned by the transmission element. It is conceivable for the spring element to be constructed integrally with the transmission element. In particular, the transmission element is arranged at a free end of the spring element, which free end faces away from the other free end of the spring element, in particular, at which the latching element is arranged. Preferably, the transmission element has a contact surface which is directly mechanically connected to the spring element. In particular, the transmission element has a base body which preferably has a circular cross section. It is also conceivable for the base body to have a polygonal, preferably square, cross section. In particular, the cross-sectional diameter of the base body corresponds at least substantially to the cross-sectional diameter of the spring element and/or the diameter of the latching element. It is also conceivable for the cross-sectional diameter of the base body to differ from the cross-sectional diameter of the spring element and/or the diameter of the latching element. The transmission element can be moved, in particular via the transmission element, at least along a movement axis of the transmission element, which is preferably at least substantially parallel to a main extension axis of the transmission element. Preferably, the transmission element is configured as an adjusting wedge. In particular, the actuating element can be moved by actuating the setting element, in particular along a main extension axis of the transmission element. In particular, the axis of movement of the transmission element is at least substantially perpendicular to the axis of movement of the transmission element. It is conceivable for the transmission element to be formed integrally with the adjustment element. It is also conceivable for the transmission element to be constructed integrally with the transmission element. In particular, the transfer element has a head with a cross-sectional diameter that is larger than the cross-sectional diameter of the base body. It is also conceivable that the cross-sectional diameter of the head is smaller than or corresponds to the cross-sectional diameter of the base body. The head preferably has a further contact surface which is in particular mechanically connected directly to the transmission element or the setting element. In particular, the transmission element forms a continuation which is preferably arranged on the contact surface. The cross-sectional diameter of the extension is in particular smaller than the cross-sectional diameter of the base body. In particular, the extension is arranged at least substantially completely, particularly preferably completely, within the spring element. Preferably, the extension is at least substantially completely, particularly preferably completely, surrounded by the spring element at least along a circumferential direction, which extends in a plane perpendicular to a main extension axis of the extension. In particular, the continuation is provided at least for guiding the transfer element. Preferably, the extension is at least provided for protecting the spring element against overload. In particular, the extension has a maximum length along the main extension axis of the extension which is smaller than the maximum length of the spring element along the main extension axis of the spring element. In particular, the transmission element can be moved in the direction facing the ring gear until the free end of the extension meets the detent element, which in particular limits the maximum adjustable detent torque.

It is also proposed that the setting unit has at least one rotatably mounted setting element, in particular a rotary sleeve, which is formed integrally with a rotary selector switch for switching between a screwing function, a drilling function and a hammer function. A user-friendly operation and a large working range of the hand-held power tool device can be advantageously achieved. Advantageously, a single piece is also to be understood as meaning a single piece. "one-piece" is to be understood in particular to mean formed in one piece. Preferably, the one part is produced from a single blank, mass and/or cast part, particularly preferably in an injection molding process, in particular a single-component and/or multi-component injection molding process. The rotary selector switch described below corresponds in particular to the setting element, so that the description of the rotary selector switch can be applied in particular analogously to the setting element. In particular, the rotary selector switch has at least one latching position, preferably at least two latching positions, particularly preferably at least three latching positions. Preferably, each detent position corresponds to a drilling function, a hammer function and a screwing function. In particular, the rotary selector switch has an angular region in which a locking torque for limiting a screwing torque in a screwing function can be set, preferably by adjusting the rotary selector switch in the angular region. The detent torque can preferably be set in steps, particularly preferably continuously, by rotating the selector switch. In particular, it is conceivable for the rotary selector switch to have a further detent position, which corresponds to a maximum detent torque. It is also conceivable that the interface unit is arranged to switch at least between functions. In particular, these latching positions are identified in accordance with their function. In particular, the magnitude of the detent torque corresponding to the position of the rotary selector switch in the angular range is at least qualitatively, particularly preferably quantitatively, identified. Preferably, the screwing torque to which the latching torque limits the screwing function is identified at least qualitatively, particularly preferably quantitatively, in dependence on the position of the rotary selector switch.

It is also proposed that the setting unit has at least one rotatably mounted setting element, in particular the aforementioned setting element, in particular a rotary sleeve, in particular the aforementioned rotary sleeve, wherein the axis of rotation of the setting element extends differently from the axis of movement of a transmission element of the setting unit, in particular the aforementioned transmission element. A hand-held power tool device that ensures high operational safety for the user can be advantageously constructed. Preferably, the axis of movement of the transmission element is perpendicular to the main extension axis of the housing. In particular, the axis of rotation of the setting element is perpendicular to the main axis of extension of the housing.

It is also proposed that the setting unit has at least one rotatably mounted setting element, in particular the aforementioned setting element, in particular a rotary sleeve, preferably the aforementioned rotary sleeve, and at least one transmission element, in particular the aforementioned transmission element, in particular an actuator, preferably the aforementioned actuator, wherein the axes of rotation of the setting element (in particular the aforementioned axes of rotation of the setting element), of the transmission element (in particular the aforementioned axes of movement of the transmission element), of the ring gear of the planetary transmission (in particular the aforementioned axes of rotation of the aforementioned ring gear of the planetary transmission) are at least substantially perpendicular to one another. Advantageously, a safe hand-held power tool device with high operating convenience and a large working range can be provided. In particular, the axis of rotation of the setting element, the axis of movement of the transmission element and the axis of rotation of the ring gear are oriented exactly perpendicular to one another. In particular, it is also conceivable for the axis of rotation of the setting element, the axis of movement of the transmission element and the axis of rotation of the ring gear to extend at least substantially parallel, particularly preferably parallel, to one another.

It is also proposed that the adjusting unit is at least partially of electronic design. Advantageously, a high level of safety can thereby be provided in the operation of the hand-held power tool device. Advantageously, a large working range of the hand-held power tool device can be provided. In particular, it is conceivable for the adjusting element to be designed electronically. The actuating unit can preferably actuate a drive unit, in particular an electric motor, which is provided, in particular, for moving the transmission element and/or the transmission element. In particular, it is conceivable for the setting element to be arranged on an external device. In particular, it is conceivable for the setting unit to have at least one communication unit, which is provided at least for transmitting information of the setting element to at least one further element of the setting unit. It is conceivable for the communication unit to transmit at least the operating data and/or the operating data to an external unit. In particular, it is also conceivable for the external unit to be configured as a cloud, network or the like.

A drill hammer, in particular a battery-operated drill hammer, is also proposed, which has the hand-held power tool device according to the invention, wherein the striking mechanism unit has a pneumatic striking mechanism. Advantageously, a drill hammer with a large working range can be provided. Advantageously, a high degree of operational convenience of the drill hammer can be achieved.

The hand-held power tool device according to the invention and/or the drill hammer according to the invention should not be limited to the above-described applications and embodiments. In particular, the hand-held power tool device according to the invention and/or the drill hammer according to the invention can have a different number of individual elements, components and units than those mentioned here in order to satisfy the operating modes described here. In respect of the value ranges cited in the publication, the values within the mentioned boundaries should also be regarded as public and can be used arbitrarily.

Drawings

The remaining advantages are described in the following figures. Embodiments of the invention are illustrated in the drawings. The figures and the description contain a number of combinations of features. Those skilled in the art can also view and generalize these features individually into meaningful additional combinations.

The figures show:

fig. 1 shows a drill hammer according to the invention with a hand-held power tool device according to the invention in a schematic view,

figure 2a is a schematic illustration of a part of a hand-held power tool device according to the invention,

fig. 2b is an enlarged schematic illustration of a part of the setting unit of the hand-held power tool device according to the invention, an

Fig. 3 is a schematic illustration of a further part of the hand-held power tool device according to the invention.

Detailed Description

Fig. 1 shows a drill hammer 12, in particular a battery-operated drill hammer 12, having a hand-held power tool device 10, which hand-held power tool device 10 has a striking mechanism unit 14 with a pneumatic striking mechanism 40. The hand-held power tool device 10 for a hand-held power tool, in particular a drill hammer 12, has at least: an impact mechanism unit 14 for generating, in particular, axial impact pulses for an application tool 16 that can be arranged in a tool receiver 66 of the hand-held power tool; and at least one planetary gear 18. The hand-held power tool device 10 has at least one torque limiting unit 20 for limiting the torque acting on the application tool 16. The torque limiting unit 20 has at least one adjusting unit 22 for adjusting a locking torque for limiting a screwing torque in a screwing function.

The setting unit 22 has at least one rotatably mounted setting element 24, in particular a rotary sleeve 26, wherein the axis of rotation of the setting element 24 is transverse to the axis of rotation of a ring gear 28 (see fig. 2a) of the planetary gear 18. The adjustment unit 22 is provided to limit the screwing torque to different values depending on the magnitude of the set latching torque. The setting unit 22 is provided for generating at least one adjustable detent torque which interacts with the toothed ring 28. The adjustment unit 22 is provided to suppress a rotation of the ring gear 28 by the detent torque. The rotation of the ring gear 28 can be prevented if the reaction torque generated by the screw during the screwing function is smaller than the set detent torque. The hand-held power tool device 10 is arranged on the drill hammer 12 in such a way that at least the axis of rotation of the ring gear 28 is parallel to the axis of rotation of the tool receiver 66. The adjustment unit 22 is arranged at least for the most part on a ring gear 28 of the planetary gear 18. The setting unit 22 is of completely mechanical construction. The hammer drill 12 has a housing 42, wherein the setting unit 22 is arranged in the housing 42 or on the housing 42. The setting element 24 is mounted at least rotatably relative to the housing 42. The setting element 24 is formed by a rotary sleeve 26. The setting unit 22 is provided for the stepless setting of the detent torque. The setting unit 22 can set the latching torque between the minimum latching torque and the maximum latching torque. If the detent torque has a value at least less than the maximum detent torque, the adjusted detent torque can limit the screwing torque in the screwing function. A maximum locking torque can be set by the setting unit 22, wherein a maximum screwing torque in the screwing function can be transmitted at the maximum locking torque. The screwing torque can be limited depending on the magnitude of the latching torque. The magnitude of the screw torque limited by the screw torque increases with the magnitude of the latching torque. The adjusting element 24 of the adjusting unit 22 is provided for adjusting the detent torque. The detent torque can be set continuously and/or in steps by the setting element 24. The adjustment element 24 is provided for adjusting the detent torque to a value corresponding to the maximum detent torque or less than the maximum detent torque.

Fig. 2a and 2b show a part of the hand-held power tool device 10. The setting unit 22 has at least one spring element 30. The adjusting element 24 (see fig. 1 and 3) is provided for adjusting the spring force of the spring element 30 acting in the radial direction on the ring gear 28 of the planetary gear set 18. The main extension axis of the spring element 30 extends perpendicularly to the axis of rotation of the ring gear 28. The spring element 30 can be preloaded by rotation of the setting element 24. The detent torque increases with spring force. The spring element 30 is arranged completely within the housing 42. The spring element 30 is designed as a helical spring. The setting unit 22 has at least one latching element 44. The catch element 44 is arranged between the spring element 30 and the ring gear 28. The catch element 44 can be acted upon by a force by the spring force of the spring element 30, wherein the force is directed radially onto the ring gear 28. The detent elements 44 are designed as balls. The ring gear 28 has a plurality of latch notches 46. The latching element 44 is provided for latching into at least one of the latching notches 46 in at least one operating state. If the reaction torque during screwing exceeds the set detent torque, the detent element 44 is moved away from the detent position in the detent recess 46 of the toothed ring 28, so that the toothed ring 28 can be rotated. These detent notches 46 are arranged at intervals along the circumference of the ring gear 28, which extends in a plane perpendicular to the axis of rotation of the ring gear 28. The latch notch 46 has a square cross-section. The latch notch 46 has an at least substantially uniform cross-section. The latching element 44 has a diameter which at least substantially corresponds to the cross-sectional diameter of the spring element 30.

The setting unit 22 has at least one transmission element 32, in particular an actuator 34, wherein the setting element 24 is provided for acting on the transmission element 32 via a transmission element 36 (see fig. 3), in particular a setting wedge, of the setting unit 22, said transmission element 32 being provided for acting on the spring element 30 at least along a main extension axis of the spring element 30 of the setting unit 22. The spring element 30 is arranged between the transmission element 32 and the ring gear 28. The transmission element 32 is designed as an actuator 34. The spring element 30 can be pretensioned by the transmission element 32. The transfer member 32 is movable along a radial axis of the ring gear 28. The transmission element 32 is arranged at a free end 48 of the spring element 30, which free end 48 faces away from a further free end 50 of the spring element 30, at which the latching element 44 is arranged. The transmission element 32 has a contact surface 52, which is directly mechanically connected to the spring element 30. The transmission element 32 has a base 54, the base 54 having a circular cross section. The cross-sectional diameter of the base body 54 corresponds at least substantially to the cross-sectional diameter of the spring element 30 and/or the diameter of the latching element 44. At least the transmission element 32 can be moved by the transmission element 36 along an axis of movement of the transmission element 32, wherein the axis of movement of the transmission element 32 is at least substantially parallel to a main axis of extension of the transmission element 32. It is conceivable for the transmission element 36 to be configured as an adjusting wedge. The transfer element 32 has a head 56 with a cross-sectional diameter greater than the cross-sectional diameter of the base 54. The head 56 has a further contact surface 58, which is directly mechanically connected to the transmission element 36 or the setting element 24. The transmission element 32 forms a continuation 60 arranged on the contact surface 52. The extension 60 has a cross-sectional diameter that is less than the cross-sectional diameter of the base 54. The continuation 60 is arranged completely within the spring element 30. The extension 60 is at least substantially completely surrounded by the spring element 30 at least along a circumferential direction of the extension 60, which extends in a plane perpendicular to a main extension axis of the extension 60. The continuation 60 provides at least a guide for the transfer element 32. The extension 60 is provided at least to protect the spring element 30 from overload. The extension 60 has a maximum length along the main extension axis of the extension 60 that is smaller than the maximum length of the spring element 30 along the main extension axis of the spring element 30. The transmission element 32 can be moved in the direction facing the ring gear 28 until the free end 62 of the extension 60 comes into contact with the detent element 44, which in turn limits the maximum adjustable detent torque.

The axis of rotation of the setting element 24 differs from the axis of movement of the transmission element 32 of the setting unit 22. The axis of movement of the transfer element 32 is perpendicular to the axis of rotation of the setting element 24. The axis of rotation of the tool receiving portion 66 is perpendicular to the axis of movement of the transmission element 32. The axis of movement of the transmission element 32 is perpendicular to the axis of action of the impact mechanism unit 14. The transmission element 36 can be moved along a further axis of movement. The further axis of movement of the transmission element 36 is perpendicular to the axis of movement of the transmission element 32 and to the axis of rotation of the setting element 24. The axis of action of the impact mechanism unit 14, the axis of rotation of the tool receiver 66, the axis of rotation of the ring gear 28 and the further axis of movement of the transmission element 36 are parallel to one another. The axis of rotation of the setting element 24 is perpendicular to the main extension axis of the housing 42. The axis of rotation of the setting element 24, the axis of movement of the transmission element 32 and the axis of rotation of the ring gear 28 of the planetary gear 18 are at least substantially perpendicular to one another. The axis of rotation of the setting element 24 is perpendicular to the axis of action of the impact mechanism unit 14 and to the axis of rotation of the tool receiver 66.

Fig. 3 shows a further part of the hand-held power tool device 10. The setting element 24, in particular the rotary sleeve 26, is formed in one piece with a rotary selector switch 38, the rotary selector switch 38 being used to switch between a screwing function, a drilling function and a hammer function. The rotary selector switch 38, which in the present case corresponds to the setting element 24, is described later, so that the description of the rotary selector switch 38 can be applied analogously to the setting element 24. The rotary selector switch 38 has at least three detent positions, wherein one detent position corresponds to the drilling function, the hammer function and the screwing function. The rotary selector switch 38 has an angular region in which a locking torque for limiting a screwing torque in a screwing function can be set by adjusting the rotary selector switch 38. The rotary selector switch 38 has a further detent position, which corresponds to a maximum detent torque. These latching positions are identified in accordance with their function. The rotary selector switch 38 has a position indicator 64 that indicates which position the rotary selector switch 38 is in. The detent torque limits the screwing function to a screwing torque which is at least qualitatively assigned to the position of the rotary selector switch 38. In particular, it is also conceivable for the setting unit 22 to be at least partially electronically embodied.

Claims

1. Hand-held power tool device (10) for a hand-held power tool, in particular a drill hammer (12), having:

at least one impact mechanism unit (14) for generating impact pulses, in particular axial impact pulses, for a utility tool (16) that can be arranged in a tool receptacle (66) of the hand-held power tool,

-at least one planetary gear (18), and

at least one torque limiting unit (20) for limiting a torque acting on the application tool (16),

it is characterized in that the preparation method is characterized in that,

the torque limiting unit (20) has at least one adjusting unit (22) for adjusting a locking torque for limiting a screwing torque in a screwing function.

2. The hand-held power tool device (10) as claimed in claim 1, characterized in that the adjustment unit (22) is provided for the stepless adjustment of the detent torque.

3. The hand-held power tool device (10) according to claim 1 or 2, characterized in that the adjustment unit (22) has at least one rotatably mounted adjustment element (24), in particular a rotary sleeve (26), wherein the axis of rotation of the adjustment element (24) extends transversely to the axis of rotation of the ring gear (28) of the planetary gear (18).

4. The hand-held power tool device (10) according to one of the preceding claims, characterized in that the adjustment unit (22) has at least one spring element (30) and at least one rotatably mounted adjustment element (24), in particular a rotary sleeve (26), wherein the adjustment element (24) is provided for adjusting a spring force of the spring element (30) acting radially on a ring gear (28) of the planetary gear (18).

5. Hand-held power tool device (10) according to one of the preceding claims, characterized in that the adjustment unit (22) has at least one rotatably mounted adjustment element (24) and at least one transmission element (32), in particular an actuator (34), wherein the adjustment element (24) is provided for acting on the transmission element (32) via a transmission element (36), in particular an adjustment wedge, of the adjustment unit (22), and the transmission element (32) is provided for acting on the spring element (30) at least along a main extension axis of the spring element (30) of the adjustment unit (22).

6. The hand-held power tool device (10) according to one of the preceding claims, characterized in that the setting unit (22) has at least one rotatably mounted setting element (24), in particular a rotary sleeve (26), which is formed integrally with a rotary selector switch (38), the rotary selector switch (38) being used to switch between a screwing function, a drilling function and a hammer function.

7. The hand-held power tool device (10) according to one of the preceding claims, characterized in that the adjustment unit (22) has at least one rotatably mounted adjustment element (24), in particular a rotary sleeve (26), wherein the axis of rotation of the adjustment element (24) extends differently from the axis of movement of the transmission element (32) of the adjustment unit (22).

8. The hand-held power tool device (10) according to one of the preceding claims, characterized in that the adjustment unit (22) has at least one rotatably mounted adjustment element (24), in particular a rotary sleeve (26), and at least one transmission element (32), in particular an actuator (34), wherein the axis of rotation of the adjustment element (24), the axis of movement of the transmission element (32) and the axis of rotation of the ring gear (28) of the planetary gear (18) extend at least substantially perpendicularly to one another.

9. The hand-held power tool device (10) as claimed in one of the preceding claims, characterized in that the setting unit (22) is at least partially of electronic design.

10. A drill hammer (12), in particular a battery-operated drill hammer (12), having a hand-held power tool device (10) according to one of the preceding claims, wherein the striking mechanism unit (14) has a pneumatic striking mechanism (40).