Hand-held power tool with a first and second housing section

Abstract

In a hand-held power tool (100) comprising a first housing section (110), a second housing section (142), and a drive motor (120), wherein the first housing section (110) is designed as a handle (115) in which at least one battery (190) and an electronic unit (160) are arranged, wherein the second housing section (142) has an output shaft (144) with a tool holder (146) for receiving an insert tool (150), and wherein the drive motor (120) is operatively connected to the output shaft (144) via a gearbox (130) for rotating the output shaft (144), the first housing section (110) can be arranged in at least a first angular position (194) and a second angular position (195) relative to the second housing section (142).

Description

State of the art

[0001] The present invention relates to a hand-held power tool having a first housing section, a second housing section and a drive motor, wherein the first housing section is designed as a handle in which at least one battery and an electronics unit are arranged, wherein the second housing section has an output shaft with a tool holder for receiving an insert tool, and wherein the drive motor is operatively connected to the output shaft via a gear for rotatingly driving the output shaft.

[0002] Such a handheld power tool is known from the prior art, comprising a first housing section, a second housing section, and a drive motor. The first housing section is designed as a handle in which at least one battery and an electronics unit are arranged. The second housing section has an output shaft with a tool holder for receiving an insert tool. To drive the output shaft in rotation, the drive motor is operatively connected to the output shaft via a gear. Disclosure of the invention

[0003] The invention relates to a handheld power tool comprising a first housing section, a second housing section, and a drive motor. The first housing section is designed as a handle in which at least one rechargeable battery and an electronics unit are arranged. The second housing section has an output shaft with a tool holder for receiving an insert tool. The drive motor is operatively connected to the output shaft via a gear for rotating the output shaft. The first housing section can be arranged at least in a first angular position and a second angular position relative to the second housing section.

[0004] The invention thus makes it possible to provide a hand-held power tool in which ergonomic handling can be made easy and uncomplicated by an application-specific arrangement of the first housing section relative to the second housing section.

[0005] According to one embodiment, the first housing section extends along a longitudinal axis between a first axial end and a second axial end, wherein the gear mechanism is arranged along the longitudinal axis at a first predetermined distance from the first axial end and a second predetermined distance from the second axial end. The second predetermined distance forms a ratio to the first predetermined distance in the range of 1 / 6 to 1 / 3.

[0006] Thus, a suitable ratio of the first housing section to the second housing section can be specified in a simple manner to form an ergonomic housing.

[0007] Preferably, the drive motor is arranged in the first housing section along the longitudinal axis between the gear and the first axial end or between the gear and the second axial end.

[0008] This allows the drive motor to be arranged stably and robustly in the first housing section.

[0009] The first housing section is preferably assigned a third housing section to form a further handle.

[0010] Thus, safe and reliable handling of the hand tool can be made possible by the possibility of two-handed use by a user of the hand tool.

[0011] Preferably, the third housing section can be arranged at a predetermined angle to the first housing section, wherein the predetermined angle is between 0° and 180°.

[0012] This makes it easy and uncomplicated to arrange application-specific arrangements of the third housing section relative to the first housing section.

[0013] Preferably, in the first and second angular positions, the second housing section is arranged at a predetermined angle to the first housing section, wherein the predetermined angle is between 90° and 360°.

[0014] Thus, a suitable application-specific arrangement of the second housing section relative to the first housing section can be made possible in a simple manner.

[0015] According to one embodiment, the drive motor is arranged in the second housing section or in the third housing section.

[0016] This makes it easy and straightforward to arrange the drive motor in an alternative way.

[0017] Preferably, an additional battery is arranged in the third housing section.

[0018] This makes it easy and safe to install an additional battery.

[0019] The battery is preferably designed as a cylindrical cell or pouch cell.

[0020] This makes it easy to provide a suitable battery.

[0021] According to one embodiment, the drive motor and / or the electronics unit are / is arranged between two adjacent batteries in a transverse direction which is arranged perpendicular to the longitudinal axis.

[0022] This makes it easy and uncomplicated to arrange the drive motor and / or the electronics unit in a compact manner.

[0023] Preferably, the first housing section has an operating element for activating the drive motor, a direction of rotation switch for setting a direction of rotation of the drive motor and / or a battery charging connection for connecting to a power source.

[0024] This allows for a safe and robust arrangement of the control element, the direction of rotation switch and / or the battery charging connection.

[0025] According to one embodiment, the tool holder is designed to hold insert tools with a hexagonal shank.

[0026] This means that a suitable tool holder can be provided easily and reliably.

[0027] According to one embodiment, the second housing section can be arranged in a further angular position parallel to the first housing section.

[0028] This makes it easy and uncomplicated to further arrange the second housing section relative to the first housing section.

[0029] Preferably the transmission is a crown gear transmission.

[0030] This means that a widely available, robust and reliable gearbox can be used. Short description of the drawings

[0031] The invention is explained in more detail in the following description using exemplary embodiments illustrated in the drawings. They show: Fig. 1 a side view of a hand-held power tool according to the invention with a first and second housing section, wherein the second housing section is shown in a first and second angular position, Fig. 2 a schematic view of the hand tool of Fig. 1 with an alternative arrangement of a drive motor of the hand-held power tool, Fig. 3 a schematic view of the hand tool of Fig. 1 and Fig. 2 in an I-shaped arrangement of the housing sections and with an alternative output shaft, Fig. 4 a schematic view of the hand tool of Fig. 3 in a T-shaped arrangement, Fig. 5 a schematic view of the hand tool of Fig. 1 to Fig. 4, in which the two housing sections and the output shaft can be arranged in any position relative to each other, Fig. 6 a schematic view of the hand tool of Fig. 5 in an I-shaped arrangement, Fig. 7 a schematic view of the hand tool of Fig. 5 and Fig. 6 in a Y-shaped arrangement, Fig. 8 a schematic arrangement of the hand tool of Fig. 5 to Fig. 7 in a Y-shaped arrangement, Fig. 9 a perspective view of the hand tool of Fig. 1 to Fig. 8 with two batteries, Fig. 10 a schematic view of the hand tool of Fig. 1 to Fig. 9 with an alternative design of the first and second housing sections, Fig. 11 a schematic view of the hand tool of Fig. 10, which is 90° compared to Fig. 10, wherein the output shaft is arranged at right angles to the housing sections, Fig. 12 a schematic view of the hand tool of Fig. 10 and Fig. 11 in an I-shaped arrangement, Fig. 13 a schematic view of the hand tool of Fig. 10 to Fig. 12 in a transport arrangement, Fig. 14 a schematic view of the hand tool of Fig. 1 to Fig. 13 with an alternative battery in an I-shaped arrangement, Fig. 15 a schematic view of the hand tool of Fig. 14 in a transport arrangement, and Fig. 16 a schematic view of the hand tool of Fig. 14 and Fig. 15 in a rectangular arrangement. Description of the embodiments

[0032] In the figures, elements with the same or comparable function are provided with identical reference symbols and are described in detail only once.

[0033] Fig. 1 shows an exemplary handheld power tool 100 with a first housing section 110 and a second housing section 142, as well as with a drive motor 120. The drive motor 120 is preferably designed to rotatably drive an output shaft 144. The output shaft 144 has, for example, a tool holder 146 for receiving an insert tool 150. According to one embodiment, the tool holder 146 is designed to receive insert tools 150 with a hexagonal shank 152.

[0034] Preferably, the drive motor 120 is operatively connected to the output shaft 144 via a gear 130 for rotating the output shaft 144. According to one embodiment, the gear 130 is designed as a crown gear with a crown gear 132.

[0035] The first housing section 110 is preferably designed as a handle 115. The first housing section 110 illustratively has a length 106 that is preferably less than 240 mm. According to one embodiment, at least one rechargeable battery 190 and an electronics unit 160 are arranged in the first housing section 110. The at least one rechargeable battery 190 is designed to supply power to the handheld power tool 100. The at least one rechargeable battery 190 is preferably designed as a cylindrical cell or pouch cell. The at least one rechargeable battery 190 is preferably arranged in the first housing section 110. Alternatively, the at least one rechargeable battery 190 can also be detachably arranged on the first housing section 110.

[0036] Preferably, the first housing section 110 can be arranged at least in a first angular position 194 and a second angular position 195 relative to the second housing section 142, i.e., relative to the second housing section 142. In the first angular position 194, the first and second housing sections 110, 142 are arranged, for example, at an angle 181 to one another, and in the second angular position 195, the first and two housing sections 110, 142 are arranged, for example, at an angle 182 to one another. Here, the respective angle 181, 182 is illustratively formed between a longitudinal axis 199 of the first housing section 110 and a longitudinal axis 198 of the output shaft 144. The longitudinal axis 199 preferably forms a longitudinal direction 103 of the first housing section 110. The predetermined angle 181, 182 is preferably in a range from 90° to 360°.

[0037] Illustratively, the angle 181 associated with the first angular position 194 is 90°. As a result, the two housing sections 110, 142 form a T-shaped arrangement, for example. Furthermore, the angle 182 associated with the second angular position 195 is 180°, for example. In this case, the two housing sections 110, 142 form an I-shaped arrangement, for example.

[0038] To set the first or second angular position 194, 195, the second housing section 142 is pivoted along an arrow 101. A transmission element 145 associated with the output shaft 144 moves along a circumferential direction 102 on the crown gear 132 associated with the exemplary crown gear transmission 130. The crown gear 132 is driven by a transmission element 122 of the drive motor 120, which is arranged in the first housing section 110, to drive the output shaft 144.

[0039] The first housing section 110 preferably extends along the longitudinal axis 199 between a first axial end 104 and a second axial end 105 of the handheld power tool 100. According to one embodiment, the gear 130 is arranged along the longitudinal axis 199 at a first predetermined distance 108 from the first axial end 104 and a second predetermined distance 107 from the second axial end 105. Preferably, the second predetermined distance 107 to the first predetermined distance 108 forms a ratio in the range of 1 / 6 to 1 / 3.

[0040] According to one embodiment, in a first arrangement 191, the drive motor 120 is arranged in the first housing section 110 along the longitudinal axis 199 between the gear 130 and the first axial end 104. In an alternative arrangement 192, the drive motor 120 is arranged along the longitudinal axis 199 between the gear 130 and the second axial end 105.

[0041] Furthermore, the first housing section 110 preferably has an operating element 119 for activating the drive motor 120, a rotation direction switch 117 for setting a rotation direction of the drive motor 119, and / or a battery charging port 170 for connecting to a power source. The battery charging port 170 is preferably arranged at the first axial end 104 of the first housing section 110.

[0042] Fig. 2 shows the hand tool 100 of Fig. 1, in which the drive motor 120 is arranged according to an arrangement 291 along the longitudinal axis 199 of the first housing section 110 between the gear 130 and the first axial end 104. In particular, the drive motor 120 is in Fig. 2 between the gear 130 and the battery 190 and the electronic unit 170. In addition, Fig. 2 a holding of the hand tool 100 by a hand 210 of a user of the hand tool 100.

[0043] Fig. 3 shows the hand tool 100 of Fig. 1 and Fig. 2 with an alternative second housing section 342 and with an alternative output shaft 344. The second housing section 342 and the output shaft 344 are analogous to the housing section 142 and the output shaft 144 of Fig. 1 and Fig. 2, but have a greater length. Analogous to the output shaft 144 of Fig. 1 and Fig. 2, the output shaft 344 has the tool holder 146 of Fig. 1 and Fig. 2. In Fig. 3, the second housing section 344 is arranged in the second angular position 195 or the I-shaped arrangement to the first housing section 110.

[0044] Fig. 4 shows the hand tool 100 of Fig. 3 with the extended second housing section 342 and the output shaft 344. Illustratively, the second housing section 342 is arranged in the first angular position 194 or the T-shaped arrangement to the first housing section 110.

[0045] Fig. 5 shows the hand tool 100 of Fig. 1 to Fig. 4, in which a third housing section 515 is assigned to the first housing section 110 to form an additional handle. The third housing section 515 can preferably be arranged at a predetermined angle 501 to the first housing section 110. The predetermined angle 501 is preferably in a range from 0° to 180°.

[0046] Preferably, one of the housing sections 110, 515 is fixed to the gear 130. Illustratively, the third housing section 515 is fixed, and the first housing section 110 can be rotated along arrows 502, 503. Alternatively, the first housing section 110 can be fixed, and the third housing section 515 can be rotated along arrows 502, 503. Furthermore, both housing sections 110, 515 can be rotatable along arrows 502, 503.

[0047] According to one embodiment, an additional battery 590 is arranged in the third housing section 515. The battery 590 can be configured as a cylindrical cell or pouch cell, similar to the battery 190. Illustratively, the drive motor 120 is arranged in the first housing section 110. Alternatively, the drive motor 120 can also be arranged in the third housing section 515.

[0048] Fig. 6 shows the hand tool 100 of Fig. 5 with the first and third housing sections 110, 515. In Fig. 6, the two housing sections 110, 515 illustratively form a common handle 115. Here, the second housing section 142 is preferably aligned along the longitudinal extension 103 and forms an I-shaped arrangement with the first and third housing sections 110, 515.

[0049] Fig. 7 shows the hand tool 100 of Fig. 5 and Fig. 6 with the first and third housing sections 110, 515. In Fig. 7, the first and third housing sections 110, 515 are arranged, for example, at a 90° angle to each other. The first and second housing sections 110, 142 are aligned along the longitudinal extension 103. The housing sections 110, 142, 515 illustratively form a Y-shaped arrangement 701.

[0050] Fig. 8 shows the hand tool 100 of Fig. 5 to Fig. 7 in the Y-shaped arrangement 701. Here, the second housing section 142 can be arranged along an arrow 801 relative to the first housing section 110 or the longitudinal extension 103. In particular, the second housing section 142 can be arranged at an angle between 0° and 270° relative to the first housing section 110.

[0051] Fig. 9 shows the hand tool 100 of Fig. 1 to Fig. 8 with an alternative arrangement of the drive motor 120 in the first housing section 110. The hand tool 100 has according to. Fig. 1 to Fig. 8, the first and second housing sections 110, 142 and the drive motor 120. The drive motor 120, at least one, illustratively two batteries 190, and the electronics unit 160 are arranged in the first housing section 110, which is designed as a handle 115. As described above, the output shaft 144 with the tool holder 146 of Fig. 1. Furthermore, as also mentioned above in Fig. 1, the gear 130 operatively connected to the drive motor 120 is also arranged in the first housing section 110. The first housing section 110 can preferably be arranged at least in a first angular position 194 and a second angular position 195 relative to the second housing section 142. According to one embodiment, the gear 130 is offset by the first predetermined distance 108 from Fig. 1 from the first axial end 104 and by the second predetermined distance 107 from Fig. 1 spaced from the second axial end 105.

[0052] Alternatively, the drive motor 120 and / or the electronics unit 160 are / are arranged between the two adjacent batteries 190 in a transverse direction 901, which is arranged perpendicular to the longitudinal axis 199 of the first housing section 110. It is also possible for only either the drive motor 120 or the electronics unit 160 to be arranged between the two batteries 190. Illustratively, the preferably two cylindrical batteries 190 are aligned in the longitudinal direction 103, with the two batteries 190 being arranged spaced apart from one another in the transverse direction 901. Furthermore, only one battery 190 can be provided, and the drive motor 120 and / or the electronics unit 160 are arranged next to the battery 190 in the transverse direction 901. It is noted that more than two batteries 190 can also be provided.

[0053] Fig. 10 shows the hand tool of Fig. 1 to Fig. 9 with the first, second and third housing sections 110, 142, 515. Analogous to the embodiment of Fig. 5 to Fig. 7, the first housing section 110 includes the drive motor 120 and the battery 190, and the third housing section 515 includes the additional battery 590. According to one embodiment, the first and third housing sections 110, 515 are connected to each other via a connecting section 1010. Preferably, the connecting section 1010 is arranged at the first axial end 104 of the first housing section 110.

[0054] Preferably, the electronics unit 160 and / or the battery charging connection 170 are arranged in the connecting section 1010. In the transverse direction 901, the first and third housing sections 110, 515 are arranged at a distance from one another, wherein a gap 1020 is formed between the two housing sections 110, 515. The second housing section 142 is in Fig. 10 is arranged in a position 1001, or at an exemplary angle, to the longitudinal extension 103. Illustratively, the angle is approximately 120°. Furthermore, an arrow 1002 points illustratively from above to the handle 115 of the first housing section 110, for clarification in Fig. 11.

[0055] Fig. 11 shows the hand tool 100 of Fig. 10, seen in the direction of arrow 1002 of Fig. 10. The second housing section 142 is in the Fig. 11 is arranged illustratively at an angle of 90° to the first housing section 110.

[0056] Fig. 12 shows the hand tool of Fig. 10 and Fig. 11 in the I-shaped arrangement in which the second housing section 142 is arranged along the longitudinal extension 103 of the first and third housing sections 110, 515.

[0057] Fig. 13 shows the hand tool 100 of Fig. 10 to Fig. 12 in a further angular position 1301, preferably in a transport position, in which the second housing section 142 is arranged, for example, parallel to the first housing section 110. Here, the second housing section 142 is arranged in the gap 1020 or in the transverse direction 901 between the first and third housing sections 110, 515.

[0058] Fig. 14 shows the hand tool 100 of Fig. 1 to Fig. 13 with the first and second housing sections 110, 142. In this case, Fig. 14, the second housing section 142 is arranged, for example, along the longitudinal extension 103 to the first housing section 110, wherein the two housing sections 110, 142 are illustratively arranged in the second angular position 195 or in the I-shaped arrangement.

[0059] According to one embodiment, the electronic unit 160 is in Fig. 14 is arranged along the longitudinal axis 199 between the battery 190 and the axial end 104. The battery 190 can be designed as a pouch cell 1490.

[0060] Fig. 15 shows the hand tool 100 of Fig. 14 in a further angular position 1501. In the further angular position 1501, the second housing section 142 is arranged, for example, parallel to the first housing section 110. The further angular position 1501 is preferably suitable for the safe transport of the handheld power tool 100.

[0061] Fig. 16 shows the hand tool 100 of Fig. 14 and Fig. 15 in position 1101 of Fig. 11. In position 1101, the second housing section 142 is illustratively arranged at an angle of 90° to the first housing section 110.

[0062] Finally, it should be noted that the transmission 130 in the embodiments of Fig. 5 to Fig. 8 and Fig. 10 to Fig. 16 is arranged, for example, at the second axial end 105 of the first housing section 110. Furthermore, it should be noted that the drive motor 120 can also alternatively be arranged in the second housing section 142.

Claims

[1] Hand-held power tool (100) with a first housing section (110), a second housing section (142), and a drive motor (120), wherein the first housing section (110) is designed as a handle (115) in which at least one battery (190) and an electronics unit (160) are arranged, wherein the second housing section (142) has an output shaft (144) with a tool holder (146) for receiving an insert tool (150), and wherein the drive motor (120) is operatively connected to the output shaft (144) via a gear (130) for rotatingly driving the output shaft (144), characterized by that the first housing section (110) can be arranged at least in a first angular position (194) and a second angular position (195) relative to the second housing section (142). [2] Hand tool according to claim 1, characterized byin that the first housing section (110) extends along a longitudinal axis (199) between a first axial end (104) and a second axial end (105), wherein the gear (130) is arranged along the longitudinal axis (199) at a distance from the first axial end (104) by a first predetermined distance (108) and from the second axial end (105) by a second predetermined distance (107), and wherein the second predetermined distance (108) to the first predetermined distance (107) forms a ratio in the range of 1 / 6 to 1 / 3. [3] Hand tool according to claim 1 or 2, characterized by that the drive motor (120) is arranged in the first housing section (110) along the longitudinal axis (199) between the gear (130) and the first axial end (104) or between the gear (130) and the second axial end (105). [4] Hand tool according to claim 1, characterized bythat a third housing section (515) is assigned to the first housing section (110) to form a further handle. [5] Hand tool according to claim 4, characterized by that the third housing section (515) can be arranged at a predetermined angle (501) to the first housing section (110), wherein the predetermined angle (501) is between 0° and 180°. [6] Hand tool according to one of the preceding claims, characterized by in that in the first and second angular positions (194, 195) the second housing section (142) is arranged at a predetermined angle (181, 182) to the first housing section (110), wherein the predetermined angle (181, 182) is between 90° and 360°. [7] Hand tool according to one of the preceding claims, characterized by that the drive motor (120) is arranged in the second housing section (142) or in the third housing section (515). [8] Hand tool according to one of claims 4 to 7, characterized by that an additional battery (590) is arranged in the third housing section (515). [9] Hand tool according to one of the preceding claims, characterized by that the battery (190; 590) is designed as a cylindrical cell or pouch cell (1490). [10] Hand tool according to one of the preceding claims, characterized by that the drive motor (120) and / or the electronics unit (160) are / is arranged between two adjacent batteries (190) in a transverse direction (901) which is arranged perpendicular to the longitudinal axis (199). [11] Hand tool according to one of the preceding claims, characterized bythat the first housing section (110) has an operating element (119) for activating the drive motor (120), a direction of rotation switch (117) for setting a direction of rotation of the drive motor (119) and / or a battery charging connection (170) for connecting to a power source. [12] Hand tool according to one of the preceding claims, characterized by that the tool holder (146) is designed to receive insert tools (150) with a hexagonal shank (152). [13] Hand tool according to one of the preceding claims, characterized by that the second housing section (142) can be arranged in a further angular position (1301; 1501) parallel to the first housing section (110). [14] Hand tool according to one of the preceding claims, characterized by that the gear (130) is a crown gear.

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