Portable power tool

Abstract

A portable power tool, in particular a hand-held planing machine, includes at least one workpiece contact unit and at least one handle unit. The workpiece contact unit has at least one workpiece contact surface, and the handle unit has at least one main handle. The main handle has at least one maximum distance point that, in a direction extending at least substantially perpendicularly to a workpiece contact surface, has a maximum distance from the at least one workpiece contact surface. The maximum distance is less than 150 mm.

Claims

1. A power tool system, comprising: at least one portable power tool including: at least one workpiece contact unit having at least one workpiece contact surface, and at least one handle unit having a main handle, wherein at least one drive unit having at least one drive axis which interests an axis of main extent of the main handle, and the main handle has at least one maximum distance point that, as viewed along a direction that is at least substantially perpendicular to the at least one workpiece contact surface, has a maximum distance of less than 150 mm in relation to the at least one workpiece contact surface; at least one energy storage unit configured to be positioned in the main handle and to store power and configured such that, when positioned in the main handle as viewed along the direction that is at least substantially perpendicular to the at least one workpiece contact surface, the at least one energy storage unit is disposed at least substantially entirely above a center of gravity axis of the portable power tool; and an operating element configured to actuate a switch, the operating element located directly above the at least one workpiece contact unit and at least in part directly beneath the at least one handle unit.

2. The power tool system as claimed in claim 1, wherein the power tool system has a maximum total mass of less than 1.5 kg.

3. The power tool system as claimed in claim 1, wherein the power tool system has a maximum longitudinal extent of less than 230 mm.

4. A portable power tool, further comprising: at least one workpiece contact unit having at least one workpiece contact surface; at least one handle unit having at least one main handle, wherein the at least one main handle has at least one maximum distance point that, as viewed along a direction that is at least substantially perpendicular to the at least one workpiece contact surface, has a maximum distance of less than 150 mm in relation to the at least one workpiece contact surface; an operating element configured to actuate a switch, the operating element located directly above the at least one workpiece contact unit and at least in part directly beneath the at least one main handle; and one or more of at least one open-loop and closed-loop control unit, which, as viewed along the direction that is at least substantially perpendicular to the at least the workpiece contact surface, is disposed between a center of gravity axis of the portable power tool and the workpiece contact unit.

5. The portable power tool as claimed in claim 4, wherein the maximum distance point, as viewed along the direction that is at least substantially perpendicular to the at least one workpiece contact surface, is less than 120 mm above the at least one workpiece contact surface.

6. The portable power tool as claimed in claim 4, including a center of gravity axis which is at least substantially parallel to the at least one workpiece contact surface and which, as viewed along the direction that is at least substantially perpendicular to the at least one workpiece contact surface, has a maximum distance of less than 90 mm in relation to the at least one workpiece contact surface.

7. The portable power tool as claimed in claim 4, including a center of gravity axis, the portable power tool further comprising: at least one drive unit, wherein the at least one drive unit, which, as viewed along the direction that is at least substantially perpendicular to the at least one workpiece contact surface, is disposed, at least mostly, above the center of gravity axis.

8. The portable power tool as claimed in claim 4, further comprising at least one drive unit having at least one drive axis, which, as viewed along the direction that is at least substantially perpendicular to the at least one workpiece contact surface, has a minimum distance of greater than 45 mm in relation to the at least one workpiece contact surface.

9. The portable power tool as claimed in claim 4, further comprising an insert tool unit and at least one drive unit configured to drive the insert tool unit, wherein the at least one drive unit, as viewed along the direction that is at least substantially perpendicular to the at least one workpiece contact surface, is disposed mostly above the insert tool unit.

10. The portable power tool as claimed in claim 4, further comprising at least one drive unit having at least one drive axis, which intersects an axis of main extent of the at least one main handle.

11. The portable power tool as claimed in claim 10, wherein the at least one drive axis is located forwardly of the at least one main handle and above the at least one workpiece contact surface.

12. The portable power tool as claimed in claim 11, wherein the axis of the main extent of the at least one main handle is parallel to the at least one workpiece contact surface.

13. The portable power tool as claimed in claim 4, further comprising: at least one drive unit, wherein the at least one drive unit is configured as an EC motor unit.

14. The portable power tool as claimed in claim 4, further comprising at least one insert tool unit, and at least one workpiece debris discharge unit, which, as viewed along a direction that is at least substantially parallel to the at least one workpiece contact surface, is disposed completely in front of an axis of rotation of the insert tool unit.

15. The portable power tool as claimed in claim 4, further comprising at least one energy storage receiving unit disposed mostly in the at least one main handle.

16. The portable power tool as claimed in claim 15, wherein the energy storage receiving unit has at least one energy storage guide element, the energy storage guide element having a main extent that is at least substantially parallel to the at least one workpiece contact surface.

17. The portable power tool as claimed in claim 4, wherein the portable power tool is configured as a hand-held power planer.

18. A portable power tool, comprising: at least one workpiece contact unit having at least one workpiece contact surface; at least one handle unit having at least one main handle, wherein the at least one main handle has at least one maximum distance point that, as viewed along a direction that is at least substantially perpendicular to the at least one workpiece contact surface, has a maximum distance of less than 150 mm in relation to the at least one workpiece contact surface; an operating element configured to actuate a switch, the operating element located directly above the at least one workpiece contact unit and at least in part directly beneath the at least one main handle; and at least one drive unit having at least one drive axis, which intersects an axis of main extent of the at least one main handle.

19. The portable power tool as claimed in claim 18, wherein the at least one drive axis is located forwardly of the at least one main handle and above the at least one workpiece contact surface.

20. The portable power tool as claimed in claim 19, wherein the axis of the main extent of the at least one main handle is parallel to the at least one workpiece contact surface.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) Further advantages are disclosed by the following description of the drawings. The drawings show an exemplary embodiment of the disclosure. The drawings, the description and the claims contain numerous features in combination. Persons skilled in the art will also expediently consider the features individually and combine them to create appropriate further combinations.

(2) There are shown in:

(3) FIG. 1 a side view of a power tool system according to the disclosure, having a portable power tool according to the disclosure, and having an energy storage unit, in a schematic representation,

(4) FIG. 2 a top view of the power tool system according to the disclosure, in a schematic representation, and

(5) FIG. 3 a sectional view of the portable power tool according to the disclosure, in a schematic representation.

DETAILED DESCRIPTION

(6) FIG. 1 shows a power tool system 52, having at least one portable power tool 10, and having at least one energy storage unit 54. The power tool system 52 has a maximum total mass of less than 1.5 kg. The portable power tool 10 in this case has a maximum total individual mass of less than 1 kg. The energy storage unit 54 has a maximum total individual mass of less than 0.5 kg. The energy storage unit 54 in this case is realized as a storage battery unit. In addition, the energy storage unit 54 can be removably disposed on the portable power tool 10. For this purpose, the portable power tool 10 comprises at least one energy storage receiving unit 48, by means of which the energy storage unit 54 can be disposed and/or fixed on the portable power tool 10, in a manner already known to persons skilled in the art. The energy storage unit 54, when having been disposed on the portable power tool 10, as viewed along a direction 24 that is at least substantially, in particular entirely, perpendicular to a workpiece contact surface 14 of a workpiece contact unit 12, of the portable power tool 10, is disposed at least substantially entirely above a center of gravity axis 28 of the portable power tool 10. The portable power tool 10 is thus realized as a battery-operated portable power tool. It is also conceivable, however, for the portable power tool 10 to be realized, in an alternative design, not represented in greater detail here, as a portable power tool operated via a power cord.

(7) The portable power tool 10 is realized as a hand-held power planer. The portable power tool 10 thus comprises at least the workpiece contact unit 12, which has at least the workpiece contact surface 14, and at least one handle unit 18, which has at least one main handle 20. The workpiece contact unit 12 comprises in total at least two workpiece contact surfaces 14, 16. The workpiece contact surfaces 14, 16 are at least substantially, in particular entirely, parallel to each other. It is also conceivable, however, for the workpiece contact unit 12 to have a number of workpiece contact surfaces 14, 16 other than two. One of the workpiece contact surfaces 14, 16 in this case is movably mounted on a power tool housing 56 of the portable power tool 10. The other of the workpiece contact surfaces 14, 16 is disposed in a fixed manner on the power tool housing 56. In this case, the workpiece contact surface 14 disposed in a fixed manner on the power tool housing 56 is constituted by a base plate element of the workpiece contact unit 12. The workpiece contact surface 16 that is movably mounted on the power tool housing 56 is constituted by a further base plate element of the workpiece contact unit 12. A position of the workpiece contact surface 16 that is movably mounted on the power tool housing 56 can be set relative to the power tool housing 56 by means of an insertion depth setting unit 58 of the portable power tool 10, in a manner already known to persons skilled in the art. The insertion depth setting unit 58 is thus designed, in a manner already known to persons skilled in the art, to set an insertion depth, in particular a planing depth, of an insert tool unit 42 of the portable power tool 10. For the purpose of setting an insertion depth, the insertion depth setting unit 58 comprises at least one insertion depth operating element 68. The insertion depth operating element 68 is rotatably mounted on the power tool housing 56. The insertion depth operating element 68 additionally constitutes a further support surface for a hand of an operator, for the purpose of guiding the portable power tool 10, in a manner already known to persons skilled in the art.

(8) The portable power tool 10 additionally comprises at least one operating unit 80, which is designed to open and/or close an electric circuit as a result of being actuated by an operator. The operating unit 80 has at least one operating element 82. The operating element 82 is disposed on the main handle 20. The operating element 82 in this case is movably mounted on the main handle 20. The operating element 82 is mounted in a translationally movable manner on the main handle 20. It is also conceivable for the operating element 82 to be pivotally mounted on the main handle 20. The operating element 82 is designed, in a manner already known to persons skilled in the art, to actuate an electric switch element 66 (FIG. 3) of the portable power tool 10.

(9) Further, the portable power tool 10 has a maximum longitudinal extent 32 and a maximum height extent 34, a ratio of the maximum longitudinal extent 32 to the maximum height extent 34 being less than 2.5. The maximum longitudinal extent 32 is at least substantially, in particular entirely, parallel to at least one of the workpiece contact surfaces 14, 16, and at least substantially, in particular entirely, perpendicular to a rotation axis 76 of the insert tool unit 42 of the portable power tool 10. The maximum height extent 34 is at least substantially, in particular entirely, perpendicular to at least one of the workpiece contact surfaces 14, 16. The portable power tool 10 additionally has a maximum width extent 78 (FIG. 2), which is at least substantially, in particular entirely, parallel to at least one of the workpiece contact surfaces 14, 16, and at least substantially, in particular entirely, parallel to the rotation axis 76 of the insert tool unit 42. In this case, a ratio of the maximum longitudinal extent 32 to the maximum width extent 78 is less than 2.5.

(10) The power tool housing 56 additionally comprises at least two housing shell elements 60, 62, which are connected to each other (FIG. 2). The housing shell elements 60, 62 in this case are fixed to each other by means of fastening elements, in particular screws. The power tool housing 56 is thus of a half-shell design. It is also conceivable, however, for the power tool housing 56 to be of a different design, considered appropriate by persons skilled in the art, such as, for example, a cup-type design, or a combination of a cup-type and a shell-type design, or the like. The power tool housing 56 is made of a plastic. In particular, all components of the portable power tool 10 are disposed directly in the housing shell elements 60, 62. Thus, all bearing seats or receivers for the components of the portable power tool 10 are constituted by the housing shell elements 60, 62. In particular, apart from bearing elements such as, for example, rolling bearings or slide bearings, it is advantageously possible to dispense with additional metallic elements for seating and/or receiving the individual components.

(11) The housing bearing elements 60, 62, when having been fixed to each other, constitute a main handle 20. Each of the housing shell elements 60, 62 preferably constitutes one half of the main handle 20. In this case, the energy storage receiving unit 48 is disposed mostly in the main handle 20. Preferably, the energy storage receiving unit 48 is disposed entirely in the main handle 20. The energy storage receiving unit 48 has at least one energy storage guide element 50, which has a main extent that is at least substantially, in particular entirely, parallel to the workpiece contact surfaces 14, 16. The energy storage guide element 50 in this case is disposed on a side of one of the housing shell elements 60, 62 that faces away from a gripping surface 64 of the main handle 20, the side that faces away being constituted by an inner wall of one of the housing shell elements 60, 62. The energy storage guide element 50 is of a rib-type design. It is also conceivable, however, for the energy storage guide element 50 to be of a different design, considered appropriate by persons skilled in the art, such as, for example, a groove type design or the like. The energy storage receiving unit 48 has in total at least two energy storage guide elements 50 (in FIG. 1, only one of the energy storage guide elements 50 is represented, by a broken line). It is also conceivable, however, for the energy storage receiving unit 48 to have a number of energy storage guide elements 50 other than two. The energy storage guide elements 50 are of an at least substantially similar design. In this case, each one of the energy storage guide elements 50 is disposed, respectively, on an inner wall of one of the housing shell elements 60, 62. Thus, when the housing shell elements 60, 62 have been fixed to each other, the energy storage guide elements 50 are disposed on two inner sides of the power tool housing 56 that face toward each other. The energy storage guide elements 50 are at least substantially, in particular entirely, parallel to each other. The energy storage receiving unit 48 in this case is disposed on a side of the power tool housing 56 that faces away from the workpiece contact unit 12. The main handle 20 is thus likewise disposed on a side of the power tool housing 56 that faces away from the workpiece contact unit 12.

(12) The main handle 20 has at least one maximum distance point 22 that, as viewed along a direction 24 that is at least substantially, in particular entirely, perpendicular to at least one of the workpiece contact surfaces 14, 16, has a maximum distance 26 of less than 150 mm in relation to at least one of the workpiece contact surfaces 14, 16. The maximum distance point 22 in this case is disposed on a side of the gripping surface 64 of the main handle 20 that faces away from the workpiece contact unit 12. Preferably, the maximum distance point 22 has, in particular, as viewed along the direction 24 that is at least substantially perpendicular to at least one of the workpiece contact surfaces 14, 16, a maximum distance 26 of less than 120 mm in relation to at least one of the workpiece contact surfaces 14, 16. In particular, when the movably mounted workpiece contact surface 16 is in a fully retracted state, in which the movably mounted workpiece contact surface 16 is in contact with a stop of the power tool housing 56, the maximum distance point 22 has a maximum distance 26 of less than 120 mm relative to the movably mounted workpiece contact surface 16.

(13) Furthermore, the portable power tool 10 has at least one center of gravity axis 28, which is at least substantially, in particular entirely, parallel to at least one of the workpiece contact surfaces 14, 16, and which, as viewed along the direction 24 that is at least substantially perpendicular to at least one of the workpiece contact surfaces 14, 16, has a maximum distance 30 of less than 90 mm in relation to the workpiece contact surfaces 14, 16. The center of gravity axis 28 in this case has a maximum distance 30 of less than 60 mm, in particular less than 50 mm, in relation to at least one of the workpiece contact surfaces 14, 16. Moreover, the center of gravity axis 28 is at least substantially, in particular entirely, parallel to at least one of the workpiece contact surfaces 14, 16.

(14) Furthermore, the portable power tool 10 has at least one drive unit 36 that, as viewed along the direction 24 that is at least substantially perpendicular to at least one of the workpiece contact surfaces 14, 16, is at least mostly disposed above the center of gravity axis 28 (FIG. 3). In this case, at least 60% of a total volume of the drive unit 36 is disposed above the center of gravity axis 28. In a particularly preferred design of the portable power tool 10, the drive unit 36 is disposed entirely above the center of gravity axis 28. The drive unit 36 is realized as an EC motor unit. It is also conceivable, however, for the drive unit 36 to be of a different design, considered appropriate by persons skilled in the art, in particular, in the case of an alternative design of the portable power tool 10, as a portable power tool operated via a power cord. The drive unit 36 has at least one drive axis 38 that, as viewed along the direction 24 that is at least substantially perpendicular to at least one of the workpiece contact surfaces 14, 16, has a minimum distance 40 of greater than 45 mm in relation to at least one of the workpiece contact surfaces 14, 16 (FIG. 3). The drive axis 38 in this case is at least substantially, in particular entirely, parallel to at least one of the workpiece contact surfaces 14, 16. In addition, the drive axis 38 intersects an axis of main extent 44 of the main handle 20. The axis of main extent 44 of the main handle 20 is substantially, in particular entirely, parallel to at least one of the workpiece contact surfaces 14, 16. It is also conceivable, however, for the drive axis 38 to have a parallel offset, of less than 10 mm, or to be skewed in relation to the axis of main extent 44 of the main handle 20.

(15) The drive unit 36 is designed to drive the insert tool unit 42 of the portable power tool 10. The portable power tool 10 in this case has at least one output unit 70, by means of which the drive unit 36 is operatively connected to the insert tool unit 42, in a manner already known to persons skilled in the art. The output unit 70 comprises at least one driving-force transmission element (not represented in greater detail here) for transmitting driving forces and/or driving torques from the drive unit 36 to the insert tool unit 42. The driving-force transmission element is realized as a drive belt, in particular as a toothed belt. It is also conceivable, however, for the driving-force transmission element to be of a different design, considered appropriate by persons skilled in the art, such as, for example, designed as a toothed wheel or the like. The insert tool unit 42 is realized as a planer blade unit. The insert tool unit 42 in this case has at least one cutting element 72 for removing workpiece particles of a workpiece on which work is to be performed (not represented in greater detail here). It is also conceivable, however, for the insert tool unit 42 to have more than one cutting element 72. The cutting element 72 is realized as a planer blade. In addition, the cutting element 72 is disposed on a rotational element 74 of the insert tool unit 42, in a manner known to persons skilled in the art. The rotational element 74 is realized as a planer shaft. The rotational element 74 is thus rotatably mounted in the power tool housing 56, in particular in the two housing shell elements 60, 62. A rotation axis 76 of the insert tool unit 42, in particular of the rotational element 74, is at least substantially, in particular entirely, parallel to at least one of the workpiece contact surfaces 14, 16. In addition, the rotation axis 76 of the insert tool unit 42 is at least substantially, in particular entirely, parallel to the drive axis 38 of the drive unit 36.

(16) Furthermore, the portable power tool 10 has at least one insert tool unit 42, the drive unit 36, as viewed along the direction 24 that is at least substantially perpendicular to at least one of the workpiece contact surfaces 14 16, being mostly disposed above the insert tool unit 42. The drive unit 36 in this case is disposed entirely above the insert tool unit 42. The insert tool unit 42 and the drive unit 36 in this case, as viewed along the direction 24 that is at least substantially perpendicular to at least one of the workpiece contact surfaces 14 16, have a minimum distance of greater than 1 mm, in particular greater than 10 mm, in relation to each other.

(17) Further, the portable power tool 10 comprises at least one workpiece debris discharge unit 46, which is disposed in front of the insert tool unit 42 as viewed along the direction 92 that is at least substantially, in particular entirely, parallel to at least one of the workpiece contact surfaces 14, 16. The workpiece debris discharge unit 46 is disposed in front of the insert tool unit 42 as viewed along a direction that is contrary to a working direction of the portable power tool 10 and along which the portable power tool 10 can be moved for the purpose of performing work on a workpiece. The workpiece debris discharge unit 46 in this case is designed to convey workpiece particles removed by means of the insert tool unit 42, following removal, out of an insert tool rotation region of the power tool housing 56 and out of the power tool housing itself 56. Workpiece particles are conveyed by the workpiece debris discharge unit 46 by means of a rotational energy of the insert tool unit 42.

(18) For the purpose of outputting workpiece particles from the power tool housing 56, the workpiece debris discharge unit 46 comprises at least one discharge channel 84, which connects a side of the power tool housing 56 that faces away from the workpiece contact unit 12 to the insert tool rotation region. The discharge channel 84 in this case is designed to deflect workpiece particles, which are removed from a workpiece by means of the insert tool unit 42, in such a manner that the workpiece particles can be conveyed out of the power tool housing 56. Starting from the insert tool rotation region, the discharge channel 84 in this case extends at least substantially transversely in relation to at least one of the workpiece contact surfaces 14, 16. The workpiece debris discharge unit 46 may also comprise more than one discharge channel 84 for conveying removed workpiece particles out of the power tool housing 56. The workpiece debris discharge unit 46 may also comprise a flap unit, by means of which an operator can deflect removed workpiece particles into the differing discharge channels 84 of the workpiece debris discharge unit 46. By means of the flap unit, it is thus possible to set, for example, the side of the power tool housing 56 on which removed workpiece particles can be conveyed out of the power tool housing 56 by means of the workpiece debris discharge unit 46. The workpiece debris discharge unit 46 additionally has at least one suction extraction connecting element 86, which can be connected to an external suction extraction unit (not represented in greater detail here). The suction extraction connecting element 86 is directly connected to the discharge channel 84. The suction extraction connecting element 86 in this case may be realized so as to be integral with the power tool housing 56, or realized separately from the power tool housing 56, the suction extraction connecting element 86 being detachably connectable to the discharge channel 84. The suction extraction connecting element 86, in particular when having been connected to the discharge channel 84, extends at least substantially transversely in relation to at least one of the workpiece contact surfaces 14, 16. It is additionally conceivable for the suction extraction connecting element 86 to be movably mounted on the power tool housing 56. Further, it is conceivable that a cooling airflow of a cooling unit of the drive unit 36 can be used to support discharge of removed workpiece particles through the discharge channel 84.

(19) Furthermore, the portable power tool 10 has at least one open-loop and/or closed-loop control unit 88. The open-loop and/or closed-loop control unit 88 in this case has at least one main circuit board 90, which is operatively connected to the switch element 66, which can be actuated by means of the operating element 82, and to the drive unit 36. The open-loop and/or closed-loop control unit 88 thus preferably constitutes a power electronics unit of the portable power tool 10. The main circuit board 90 has an axis of main extent that is at least substantially, in particular entirely, parallel to at least one of the workpiece contact surfaces 14, 16. The main circuit board 90 in this case, as viewed along the direction 24 that is at least substantially perpendicular to at least one of the workpiece contact surfaces 14, 16, is disposed between the center of gravity axis 28 and the workpiece contact unit 12, in the power tool housing 56.

(20) For the purpose of cooling the open-loop and/or closed-loop control unit 88, at least one cooling air channel of the cooling unit of the drive unit 36 goes from the drive unit 36, through the power tool housing 56, to the open-loop and/or closed-loop control unit 88. The open-loop and/or closed-loop control unit 88 in this case is disposed in the power tool housing 56, on a side of the power tool housing 56 that faces away from the insertion depth setting unit 58. In this case, air inlet openings of the cooling unit are disposed on a side of the power tool housing 56 that faces away from the workpiece contact unit 12, in particular in a transition region from the main handle 20 to a sub-region of the power tool housing 56, in which the drive unit 36 is mounted. Further, air outlet openings of the cooling unit are disposed on the side of the power tool housing 56 that faces away from the insertion depth setting unit 58. The cooling air channel preferably goes through the main handle 20, to the air outlet openings of the cooling unit. The cooling air channel extends from the air inlet openings, past the drive unit 36, in particular around the latter, through the main handle 20 and past the open-loop and/or closed-loop control unit 88, in particular around the latter, to the air outlet openings. By means of the cooling unit, which is realized, in particular, as a fan unit, cooling air can thus be sucked in through the air inlet openings and routed, through the cooling air channel, to the air outlet openings, at which the cooling air, heated by the waste heat of the drive unit 36 and of the open-loop and/or closed-loop control unit 88, emerges again from the power tool housing 56. The open-loop and/or closed-loop control unit 88 can thus be actively cooled by means of the cooling unit of the drive unit 36.