HAND TOOL MACHINE DEVICE

Description

State of the art

[0001] The present invention relates to a hand-held power tool device according to the preamble of claim 1. Such a hand-held power tool device is known from US 3 166 168 A. Disclosure of the invention

[0002] According to the present invention, a hand-held power tool device is provided which comprises the features of claim 1, as well as a hand-held power tool which comprises the features of claim 11.

[0003] According to the invention, the impact mechanism cover is formed integrally with the ring gear.

[0004] In this context, a "handheld power tool device" is understood to mean, in particular, at least one part, in particular a subassembly, of a handheld power tool. In particular, the handheld power tool device can also comprise the entire handheld power tool. The handheld power tool can be designed as any machine, preferably an electric one, but advantageously as a rotary impact wrench. A "rotary impact mechanism" is understood in this context to mean, in particular, an impact mechanism intended to convert an at least substantially continuous power output of a drive unit into an impact-like angular momentum. "Provided" is understood to mean, in particular, specially programmed, designed, and / or equipped.The term "an object intended for a specific function" should be understood in particular to mean that the object fulfills and / or performs this specific function in at least one application and / or operating state. The rotary impact mechanism can be designed, in particular, as a cam rotary impact mechanism or as a V-groove rotary impact mechanism.

[0005] A "planetary gear" is understood in particular to mean a gear that has at least one planet connected to a planet carrier, which is coupled radially outward to a ring gear and / or radially inward to a sun gear. The sun gear, the planet, and / or the ring gear can be formed in particular by round gears or by coordinated non-circular gears. Several planetary gears can be connected in series and / or several stages can be interposed between the planet gear and the ring gear. A "ring gear" is understood in particular to mean a gear wheel that has a rim designed in the form of a cylindrical shell or in the form of an interrupted cylindrical shell.In this context, a "percussion mechanism cover" is understood to mean, in particular, a cover element intended to at least largely close off the rotary percussion mechanism in the direction of at least one further handheld power tool unit, in particular in the direction of a drive unit. "At least largely" is understood in this context to mean, in particular, at least 51%, preferably at least 65%, and particularly preferably at least 75%. In particular, the percussion mechanism cover has at least one passage recess intended for at least partially passing through at least one shaft, in particular a drive shaft. An "intermediate shaft" is understood to mean, in particular, a shaft of a drive train, which is arranged, in particular, between a drive unit and an output shaft, in particular of a handheld power tool.In particular, the at least one intermediate shaft is provided to directly and / or indirectly transmit a force and / or movement generated by the drive unit to the output shaft. In particular, the intermediate shaft is at least partially designed as a planetary gear carrier of the planetary gear.

[0006] The fact that the intermediate shaft is at least partially mounted within the percussion mechanism cover is to be understood in particular as meaning that an end of the intermediate shaft facing away from an output shaft of the rotary percussion mechanism is rotatably mounted within the percussion mechanism cover. In this context, "rotatably mounted" is to be understood in particular as meaning that the intermediate shaft is designed to perform a rotational movement relative to the percussion mechanism cover, at least in one operating state.

[0007] "Integral" should be understood in particular as being at least materially connected, for example, by a welding process, an adhesive process, an injection molding process, and / or another process deemed appropriate by a person skilled in the art, and / or advantageously formed in one piece, such as by production from a single casting and / or by production using a single- or multi-component injection molding process, and advantageously from a single blank. In particular, the impact mechanism cover and the hollow gear are formed at least substantially from a metallic material, preferably from a sintered metallic material.

[0008] Such a configuration makes it possible to provide a generic handheld power tool device with advantageous design properties. In particular, by mounting the intermediate shaft within the impact mechanism cover, an advantageously compact design, in particular an advantageously short overall length, of the rotary impact mechanism can be achieved. The length of the handheld power tool device is, for example, a maximum of 200 mm, in particular a maximum of 160 mm, very particularly a maximum of 140 mm, and particularly preferably a maximum of 130 mm. The length of the handheld power tool device comprises, in particular, the drive unit and the rotary impact mechanism as well as a tool holder. Furthermore, an advantageously short tolerance chain can be achieved. Furthermore, the number of individual components can advantageously be kept low.

[0009] According to the invention, the handheld power tool device has at least one intermediate shaft bearing for supporting the intermediate shaft, which is arranged at least partially within the impact mechanism cover. In this context, an "intermediate shaft bearing" is understood to mean, in particular, a radial bearing intended to rotatably support the intermediate shaft. In particular, the intermediate shaft bearing is arranged directly on a through-hole in the impact mechanism cover. The intermediate shaft bearing is arranged, in particular, on a side of the impact mechanism cover facing an output shaft of the rotary impact mechanism. The intermediate shaft bearing can be designed, in particular, as a plain bearing or roller bearing. Preferably, the intermediate shaft bearing is designed as a roller bearing, for example, as a ball bearing, roller bearing, or needle bearing. This advantageously achieves low-friction support of the intermediate shaft.Furthermore, the arrangement of the intermediate shaft bearing within the impact mechanism cover allows an advantageously short overall length of the rotary impact mechanism to be achieved.

[0010] According to the invention, the impact mechanism cover has at least one bearing receptacle which is provided for receiving the intermediate shaft bearing.

[0011] In this context, a "bearing receptacle" is understood to mean, in particular, an area formed at least partially by the percussion mechanism cover, which is intended for a stationary arrangement of the intermediate shaft bearing within the percussion mechanism cover. The bearing receptacle is, in particular, formed integrally with the percussion mechanism cover. In particular, the bearing receptacle is arranged in the region of a through-hole in the percussion mechanism cover. The bearing receptacle is, in particular, at least partially hollow-cylindrical. In particular, the bearing receptacle has, at an end facing away from the percussion mechanism cover, an at least substantially annular stop element for the intermediate shaft bearing. The stop element is, in particular, formed integrally with the bearing receptacle. In particular, an inner diameter of the bearing receptacle corresponds at least substantially to an outer diameter of the intermediate shaft bearing.Preferably, the intermediate shaft bearing is secured in the bearing housing by a press fit. A "press fit" is understood in particular to mean a force-locking connection, which can be implemented as a transverse and / or longitudinal interference fit. A "force-locking connection" is understood in particular to mean a detachable connection, wherein a holding force between two components is preferably transmitted by a frictional force between the components. This allows for an advantageously simple, secure, and / or permanent arrangement of the intermediate shaft bearing within the impact mechanism cover.

[0012] According to the invention, the intermediate shaft has at least one receiving recess, which is provided for at least partially receiving a drive shaft. In particular, the receiving recess is provided for receiving a drive shaft of a drive unit. In particular, the receiving recess extends along a rotational axis of the intermediate shaft. In particular, the handheld power tool device has a drive unit with a drive shaft, which is aligned at least substantially in alignment with the intermediate shaft. "At least substantially in alignment" is to be understood here in particular as an alignment of the drive shaft and the intermediate shaft relative to one another, wherein the drive shaft and the intermediate shaft are arranged at least substantially overlapping, viewed along an axial direction of the drive shaft and / or the intermediate shaft. The drive unit has, in particular, at least one housingless electric motor.The drive shaft is, in particular, at least partially formed by an armature shaft of the housingless electric motor. Particularly in an assembled state, the drive shaft extends at least partially into the intermediate shaft, in particular into the receiving recess of the intermediate shaft. According to the invention, the handheld power tool device has at least one bearing for supporting the drive shaft, which bearing is arranged within the receiving recess. In particular, the bearing is arranged at least partially in a plane intersecting the intermediate shaft and extending at least substantially perpendicular to the intermediate shaft.The term "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 viewed in a plane, enclose an angle of 90° and the angle has a maximum deviation of, in particular, less than 8°, advantageously less than 5°, and particularly advantageously less than 2°. In particular, in an assembled state, the plane intersects both the intermediate shaft and the drive shaft at least substantially perpendicularly. The bearing is, in particular, at least partially designed as a rolling bearing, for example, as a ball bearing, roller bearing, or needle bearing. This allows an advantageously short overall length of the handheld power tool device to be achieved.

[0013] It is further proposed that the intermediate shaft have at least one sealing element receptacle. In particular, the shaft sealing ring receptacle is arranged directly at an insertion opening of the receiving recess of the intermediate shaft, which is provided for inserting a drive shaft into the intermediate shaft. The sealing element receptacle is provided in particular for at least partially receiving a sealing element, in particular a sealing ring and / or a shaft sealing ring. In particular, the intermediate shaft has at least one sealing element arranged in the sealing element receptacle. The sealing element is designed in particular as a shaft sealing ring, in particular as a radial shaft sealing ring. The shaft sealing ring is provided in particular for at least substantially sealing the rotary impact mechanism, in particular the planetary gear of the rotary impact mechanism, from the environment.This allows for an advantageously reliable sealing of the rotary impact mechanism.

[0014] Furthermore, a handheld power tool, in particular a rotary impact wrench, with at least one handheld power tool device according to the invention is proposed. This makes it possible to provide an advantageously compact handheld power tool, in particular an advantageously compact rotary impact wrench. In particular, the handheld power tool can have an advantageously short overall length.

[0015] The handheld power tool device according to the invention is not intended to be limited to the application and embodiment described above. In particular, the handheld power tool device according to the invention may have a number of individual elements, components, and units that differs from the number stated herein to fulfill a function described herein. drawing

[0016] Further advantages will become apparent from the following description of the drawings. The drawings illustrate three exemplary embodiments of the invention. The drawings, the description, and the claims contain numerous features in combination. Those skilled in the art will also expediently consider the features individually and combine them into useful further combinations.

[0017] They show: Fig. 1 a schematic partial sectional view of a hand tool which is designed as a rotary impact wrench, Fig. 2 a sectional view of a hand tool device of the hand tool with a drive unit and a rotary impact mechanism, Fig. 3 an intermediate shaft of the hand tool device of Figure 2 in a perspective view, Fig. 4 a sectional view of the intermediate shaft from Figure 3, Fig. 5 a schematic representation of the introduction of planetary gear receptacles into the intermediate shaft, Fig. 6 the hand tool in a front view, Fig. 7 a sectional view of the hand tool, Fig. 8 a sectional view of an alternative hand tool device and Fig. 9 a sectional view of a further alternative hand tool device. Description of the embodiments

[0018] Figure 1shows a handheld power tool 34a, which is designed as an impact wrench, in a schematic partial sectional view. The handheld power tool 34a is designed as a cordless impact wrench. The handheld power tool 34a comprises a handle 80, which extends perpendicular to a rotation axis 84a of a tool holder 86a of the handheld power tool 34a, which tool holder is provided for receiving an insert tool (not shown here). The handle 80a comprises a battery holder 90a on a side 88a facing away from the handheld power tool 34a. The battery holder 90a is provided to accommodate a battery unit 92a for supplying power to the handheld power tool 34a.

[0019] Furthermore, the hand-held power tool 34a has a hand-held power tool device 10a with a drive unit 12a and a rotary impact mechanism 16a. Figure 2shows the handheld power tool device 10 in a sectional view. The handheld power tool device 10a has a drive housing 72a and a percussion mechanism housing 74a (cf. Figure 1 ). The drive housing 72a at least substantially completely encloses the drive unit 12a. The impact mechanism housing 74a at least substantially completely encloses the rotary impact mechanism 16a (cf. Figure 1). The drive unit 12a is designed as an electric drive unit, which is supplied with electrical energy by means of the battery unit 92a. The drive unit 12a has a housing-free electric motor 26a, which is intended to convert the electrical energy provided by the battery unit 92a into rotational energy. The electric motor 26a is designed as an open-frame motor, in which components of the electric motor 26a are individually mounted in the drive housing 72a. Furthermore, the drive unit 12a has a drive shaft 14a, which is intended to transmit the rotational energy to the rotary impact mechanism 16a. The drive shaft 14a is completely formed by an armature shaft 28a of the housing-free electric motor 26a. The armature shaft 28a is designed as a one-piece. The rotary impact mechanism 16a is designed as a V-groove rotary impact mechanism.The rotary impact mechanism 16a is designed to convert a continuous power output of the drive unit 12a into an impact-shaped rotary pulse. The power of the drive unit 12a is transmitted to the insert tool by a strike of a striker 96a of the rotary impact mechanism 16a on a corresponding anvil 100a of an output spindle 15a by means of a pulse of high power intensity. In the illustrated embodiment, the anvil 100a is formed integrally with the output spindle 15a and the tool holder 86a. The striker 96a is mounted in such a way that axial and radial movement is possible. The axial movement is controlled by V-shaped grooves 98 (see . Figure 3 ) and driving balls 97a (cf. Figure 1 ). A spring 138a ensures the return movement of the striker 96a.

[0020] The rotary impact mechanism 16a has an intermediate shaft 18a, which is at least substantially aligned with the drive shaft 14a. Furthermore, the handheld power tool device 10a has at least one bearing 20a for supporting the drive shaft 14a. The bearing 20a is arranged at least partially in a plane 22a intersecting the intermediate shaft 18a, which plane runs at least substantially perpendicular to the intermediate shaft 18a. The drive shaft 14a is at least partially mounted within the intermediate shaft 18a. The intermediate shaft 18a has a receiving recess 24a, which is provided for at least partially receiving the drive shaft 14a. The receiving recess 24a extends at least substantially along a rotational axis 108a of the intermediate shaft 18a. In an assembled state, the drive shaft 14a projects at least partially into the intermediate shaft 18a, in particular into the receiving recess 24a of the intermediate shaft 18a.The bearing 20a for supporting the drive shaft 14a is arranged within the receiving recess 24a. The bearing 20a for supporting the drive shaft 14a is designed as a rolling bearing. The intermediate shaft 18a further has a sealing element receptacle 30a. The sealing element receptacle 30a is arranged directly at an insertion opening 136a of the receiving recess 24a of the intermediate shaft 18a, which is intended to insert the drive shaft 14a into the intermediate shaft 18a. In addition, the intermediate shaft 18a has at least one sealing element 32a arranged in the sealing element receptacle 30a. The sealing element 32a is designed as a shaft sealing ring, in particular as a radial shaft sealing ring, which, in an assembled state, is arranged between the drive shaft 14a and the intermediate shaft 18a. The sealing element receptacle 30a is designed as a shaft sealing ring receptacle.A further bearing 102a for supporting the drive shaft 14a is arranged on a side 104a of the electric motor 26a facing away from the tool holder 86a in the drive housing 72a.

[0021] In addition, the handheld power tool device 10a has a cooling air unit 36a, which comprises at least one fan wheel 38a arranged between the drive unit 12a and the rotary impact mechanism 16a. The fan wheel 38a is provided in particular for generating a cooling air flow for cooling the rotary impact mechanism 16a and / or the drive unit 12a. The fan wheel 38a is arranged in a rotationally fixed manner on the drive shaft 14a of the drive unit 12a. The drive unit 12a is provided for setting the fan wheel 38a into a rotational movement during operation of the handheld power tool 34a. The fan wheel 38a and the rotary impact mechanism 16a overlap at least partially in the axial direction 40a. Preferably, the fan wheel 38a projects at least partially beyond the rotary impact mechanism 16a in the axial direction 40a. The fan wheel 38a has a plurality of fan wheel blades 110a arranged in the circumferential direction, which overlap at least a part of the rotary impact mechanism 16a in the circumferential direction.The fan impeller blades 110a extend at least substantially in the axial direction 40a. The rotary impact mechanism 16a has at least one gear unit 42a designed as a single-stage planetary gear 50a. The bearing 20a for supporting the drive shaft 14a is arranged on a side of the planetary gear 50a facing away from the drive unit 12a. A toothing 144a between the drive shaft 14a and the planetary gear 50a is arranged between the bearing 20a and the bearing 102a. Alternatively, the gear unit 42a can be designed as a multi-stage planetary gear. Preferably, the fan impeller 38a and at least the gear unit 42a overlap at least partially in the axial direction 40a. The planetary gear 50a comprises at least one ring gear 46a. The rotary impact mechanism 16a further comprises an impact mechanism cover 44a. The impact mechanism cover 44a is arranged between the drive unit 12a and the planetary gear 50a.In particular, the impact mechanism cover 44a is intended to at least largely close the rotary impact mechanism 16a in the direction of the drive unit 12a. The impact mechanism cover 44a has a passage recess 106a, which is provided for at least partially passing through at least the drive shaft 14a. The impact mechanism cover 44a is formed integrally with the ring gear 46a. The impact mechanism cover 44a and the ring gear 46a consist at least substantially of a metallic material, in particular of a metallic sintered material. Preferably, the fan wheel 38a and at least the impact mechanism cover 44a overlap at least partially in the axial direction 40a.

[0022] The handheld power tool device 10 further comprises an intermediate shaft bearing 48a for supporting the intermediate shaft 18a. The intermediate shaft bearing 48a is designed as a rolling bearing. Alternatively, the intermediate shaft bearing 48a can be designed as a plain bearing. The intermediate shaft bearing 48a is designed as a radial bearing, which is intended to rotatably support the intermediate shaft 18a in the impact mechanism cover 44a. The intermediate shaft bearing 48a is arranged at least partially within an impact mechanism cover 44a of the rotary impact mechanism 16a. The intermediate shaft bearing 48a is arranged directly at the through-hole 106a of the impact mechanism cover 44a. The intermediate shaft bearing 48a is arranged on the side of the impact mechanism cover 44a facing the tool holder 86a. The impact mechanism cover 44a has at least one bearing receptacle 52a, which is intended to receive the intermediate shaft bearing 48a. The bearing holder 52a is formed integrally with the striking mechanism cover 44a.The bearing receptacle 52a is arranged in the region of the through-hole 106a of the percussion mechanism cover 44a. The bearing receptacle 52a is at least substantially hollow-cylindrical. The bearing receptacle 52a has, at an end facing away from the percussion mechanism cover 44a, an at least substantially annular stop element 112a for the intermediate shaft bearing 48a. The stop element 112a is formed integrally with the bearing receptacle 52a. An inner diameter of the bearing receptacle 52a corresponds at least substantially to an outer diameter of the intermediate shaft bearing 48a. The intermediate shaft bearing 48a is preferably fixed in the bearing receptacle 52a by a press fit. The fan wheel 38a and at least the intermediate shaft bearing 48a and / or the intermediate shaft 18a preferably overlap at least partially in the axial direction 40a.

[0023] Figure 3 shows the intermediate shaft 18a in a perspective view. Figure 4shows the intermediate shaft 18a in a sectional view along the section plane III-III. The intermediate shaft 18a is designed as a planetary gear carrier 94a of the planetary gear 50a. The intermediate shaft 18a has a plurality of planetary gear receptacles 54a, 56a, 58a and planetary gear bearing points 60a, 62a, 64a arranged in the circumferential direction. In each planetary gear receptacle 54a, 56a, 58a, a planetary gear 130a is arranged, which is rotatably mounted by means of a pin 132a. The intermediate shaft 18a has at least one material recess 66a, 68a, 70a on its outer circumference, at least in the region of at least one planetary gear bearing point 60a, 62a, 64a. A number of material recesses 66a, 68a, 70a corresponds to a number of planetary gear receptacles 54a, 56a, 58a. Each planetary gear receptacle 54a, 56a, 58a is assigned exactly one material recess 66a, 68a, 70a.The intermediate shaft 18a has three planetary gear receptacles 54a, 56a, 58a, each with a planetary gear bearing point 60a, 62a, 64a. The planetary gear bearing points 60a, 62a, 64a are arranged on the intermediate shaft 18a at least substantially offset from one another by 120° in the circumferential direction. The planetary gear receptacles 54a, 56a, 58a are separated from one another by webs 124a extending radially to a longitudinal direction 122a of the intermediate shaft 18a. Viewed along the longitudinal direction 122a of the intermediate shaft 18a, the planetary gear receptacles 54a, 56a, 58a are delimited by two disc-shaped wall elements 126a, 128a, which are arranged at least substantially perpendicular to the longitudinal direction 122a. The wall elements 126a, 128a are at least substantially circular. The wall elements 126a, 128a are formed integrally with the intermediate shaft 18a.The material recesses 66a, 68a, 70a are at least substantially circular segment-shaped. The planetary gear receptacles 54a, 56a, 58a are at least substantially cylindrical segment-shaped. The material recesses 66a, 68a, 70a are formed in one of the wall elements 126a, 128a. The material recesses 66a, 68a, 70a are formed in the wall element 126a, which, in an assembled state of the intermediate shaft 18a, is arranged in the direction of a drive unit 12a. The wall elements 126a, 128a have an at least substantially identical radius. Alternatively, one of the wall elements 126a, 128a can have a smaller radius.

[0024] The material recesses 66a, 68a, 70a are provided during the manufacture of the intermediate shaft 18a for temporarily at least partially accommodating a milling head spindle 78a (cf. Figure 5). The planetary gear receptacles 54a, 56a, 58a are introduced into a blank of the intermediate shaft 18a by means of a side milling cutter 134a. During the introduction of the planetary gear receptacles 54a, 56a, 58a, a milling head spindle 78a of the side milling cutter 134a is at least partially inserted into a material recess 66a, 68a, 70a. Preferably, the planetary gear receptacles 54a, 56a, 58a are introduced into the intermediate shaft 18a in a common method step at least substantially simultaneously, in particular by means of a plurality of identical side milling cutters 134a. The side milling cutters 134a are brought towards the intermediate shaft 18a in such a way that the milling head spindles 78a run at least substantially parallel to a longitudinal extension direction 122a of the intermediate shaft 18a at all times.

[0025] Figure 6 shows the hand tool 34a in a front view. Figure 7shows a sectional view of the handheld power tool 34a along section line VI-VI. The ring gear 46a of the planetary gear 50a is clamped between the drive housing 72a and the impact mechanism housing 74a. The drive housing 72a and the impact mechanism housing 74a have a clamping surface 114a, which, in an assembled state, each bears from opposite sides against at least one surface 116a of the ring gear 46a and which each exerts a clamping force on the ring gear 46a. The ring gear 46a is fixed to the drive housing 72a by means of at least one screw element 76a, preferably by means of at least one screw. The ring gear 46a is fixed, for example, with four screw elements 76a. The ring gear 46a has recesses 118a on an outer circumference, which are provided for the screw elements 76a to pass through.The drive housing 72a has a number of threaded recesses 120a corresponding to the number of screw elements 76a, which have a thread corresponding to a thread of the screw elements 76a. The drive housing 72a, the percussion mechanism housing 74a, and the ring gear 46a are connected to one another in an assembled state by means of the screw elements 76a, with the ring gear 46a being arranged between the drive housing 72a and the percussion mechanism housing 74a. Alternatively or additionally, the ring gear 46a can be fixed to the percussion mechanism housing 74a by means of at least one screw element 76a.

[0026] In the Figures 8 and 9A further embodiment of the invention is shown. The following descriptions and the drawings are essentially limited to the differences between the embodiments, whereby with regard to components with the same designation, in particular with regard to components with the same reference numerals, reference is also made to the drawings and / or the description of the other embodiments, in particular to the Figures 1 to 7 To distinguish the embodiments, the letter a is added to the reference numerals of the embodiment in the Figures 1 to 7 In the examples of the Figures 1 to 7 the letter a is replaced by the letters b to c.

[0027] Figure 8shows an alternative embodiment of the handheld power tool device 10b in a sectional view. The handheld power tool device 10b has a drive unit 12b and a rotary impact mechanism 16b with a planetary gear 50b. The drive unit 12b has a housing-free electric motor 26b, which is intended to convert electrical energy into rotational energy. The electric motor 26b is designed as an open-frame motor. Furthermore, the drive unit 12b has a drive shaft 14b, which is intended to transmit the rotational energy to the rotary impact mechanism 16b. The drive shaft 14b is partially formed by an armature shaft 28b of the housing-free electric motor 26b.

[0028] The rotary impact mechanism 16b has an intermediate shaft 18b, which is at least substantially aligned with the drive shaft 14b. Furthermore, the handheld power tool device 10b has at least one bearing 20b for supporting the drive shaft 14b. The drive shaft 14b is at least partially mounted within the intermediate shaft 18b. The intermediate shaft 18b has a receiving recess 24b, which is provided for at least partially receiving the drive shaft 14b. The bearing 20b is arranged directly at an insertion opening 136b of the receiving recess 24b of the intermediate shaft 18b, which is provided for inserting the drive shaft 14b into the intermediate shaft 18b. The bearing 20b for supporting the drive shaft 14b is arranged on a side of the planetary gear 50b facing the drive unit 12b. The bearing 20b is designed as a roller bearing.

[0029] Figure 9shows a further alternative embodiment of the handheld power tool device 10c in a sectional view. The handheld power tool device 10c has a drive unit 12c and a rotary impact mechanism 16c with a planetary gear 50c. The drive unit 12c has a housing-free electric motor 26c, which is intended to convert electrical energy into rotational energy. The electric motor 26c is designed as an open-frame motor. Furthermore, the drive unit 12c has a drive shaft 14b, which is intended to transmit the rotational energy to the rotary impact mechanism 16c. The drive shaft 14c is partially formed by an armature shaft 28c of the housing-free electric motor 26c.

[0030] The rotary impact mechanism 16c has an intermediate shaft 18c, which is at least substantially aligned with the drive shaft 14c. Furthermore, the handheld power tool device 10c has at least one bearing 20c for supporting the drive shaft 14c. The drive shaft 14c is at least partially mounted within the intermediate shaft 18c. The intermediate shaft 18c has a receiving recess 24c, which is provided for at least partially receiving the drive shaft 14c. The bearing 20c is arranged directly at an insertion opening 136c of the receiving recess 24c of the intermediate shaft 18c, which is provided for inserting the drive shaft 14c into the intermediate shaft 18c. The bearing 20c for supporting the drive shaft 14c is arranged on a side of the planetary gear 50c facing the drive unit 12c. The bearing 20c is designed as a ball bearing.Furthermore, the handheld power tool device 10c has a sealing ring 140c, which surrounds the bearing 20c in the circumferential direction and is arranged between the bearing 20c and an inner diameter receiving recess 24c of the intermediate shaft 18c. The intermediate shaft 18c has a groove 142c, which is provided for receiving the sealing ring 140c.

Claims

1. Hand-held power tool device having at least one rotary impact mechanism (16a; 16b; 16c) which has at least one planetary transmission (50a; 50b; 50c) with at least one internal gear (46a; 46b; 46c), has at least one impact mechanism cover (44a; 44b; 44c) and has at least one intermediate shaft (18a; 18b; 18c), wherein the intermediate shaft (18a; 18b; 18c) is mounted at least partially within the impact mechanism cover (44a; 44b; 44c), wherein the impact mechanism cover (44a; 44b; 44c) is formed in one piece with the internal gear (46a; 46b; 46c), wherein at least one intermediate shaft bearing (48a; 48b; 48c) for supporting the intermediate shaft (18a; 18b; 18c), which at least one intermediate shaft bearing is arranged at least partially within the impact mechanism cover (44a; 44b; 44c), wherein the impact mechanism cover (44a; 44b; 44c) has at least one bearing receptacle (52a; 52b; 52c) which is intended for receiving the intermediate shaft bearing (48a; 48b; 48c), the intermediate shaft (18a; 18b; 18c) having a receptacle recess (24a; 24b; 24c) which is intended for at least partially receiving a drive shaft (14a; 14b; 14c), characterized by a bearing (20a) for supporting a drive shaft (14a), which bearing is arranged within the receptacle recess (24a; 24b; 24c).

2. Hand-held power tool device according to Claim 1, characterized in that the bearing (20a) is arranged at least partially in a plane (22a) which intersects the intermediate shaft (18a) and which is at least substantially perpendicular to the intermediate shaft (18a).

3. Hand-held power tool device according to Claim 1 or 2, characterized in that the bearing (20a) is in the form of a rolling bearing.

4. Hand-held power tool device according to one of the preceding claims, characterized in that the intermediate shaft bearing (48a; 48b; 48c) is in the form of a rolling bearing.

5. Hand-held power tool device according to one of the preceding claims, characterized in that the intermediate shaft bearing (48a; 48b; 48c) is fixed in the bearing receptacle (52a; 52b; 52c) by way of a press fit.

6. Hand-held power tool device according to one of the preceding claims, characterized in that the intermediate shaft (18a; 18b; 18c) has at least one sealing element receptacle (30a; 30b; 30c).

7. Hand-held power tool device according to Claim 6, characterized in that the intermediate shaft (18a; 18b; 18c) has at least one sealing element (32a; 32b; 32c) arranged in the sealing element receptacle (30a; 30b; 30c).

8. Hand-held power tool device according to one of the preceding claims, characterized in that a length of the hand-held power tool device is at most 200 mm, particularly at most 160 mm, very particularly at most 140 mm, particularly preferably at most 130 mm.

9. Hand-held power tool device according to one of the preceding claims, characterized in that the stop element (112a; 112b; 112c) is formed in one piece with the bearing receptacle (52a; 52b; 52c).

10. Hand-held power tool device according to one of the preceding claims, characterized in that a fan impeller (38a; 38b; 38c) and the intermediate shaft bearing (48a; 48b; 48c) and / or the intermediate shaft (18a; 18b; 18c) overlap at least partially in an axial direction (40a; 40b; 40c).

11. Hand-held power tool having at least one hand-held power tool device (10a; 10b; 18c) according to one of the preceding claims.