Hand-Held Tool System, Method for Operating

Abstract

A hand-held tool system includes a hand-held power tool, in particular a drill, having a wall device configured to be mounted on a wall to be processed by the hand-held power tool. The wall device includes at least a first sensor device that is configured to determine an orientation of the hand-held power tool relative to the wall device.

Claims

1. A hand-held tool system, comprising: a hand-held power tool comprising a wall device configured to be mounted on a wall on which work is to be performed with the hand-held power tool, the wall device including at least one first sensor device that is configured to determine an alignment of the hand-held power tool in relation to the wall device.

2. The hand-held tool system as claimed in claim 1, wherein the first sensor device has a first acceleration sensor.

3. The hand-held tool system as claimed in claim 2, wherein the hand-held power tool further comprises (i) a second sensor device having a second acceleration sensor, and (ii) a comparing device configured to compare measured values of the first sensor device with measured values of the second sensor device.

4. The hand-held tool system as claimed in claim 3, wherein the first sensor device has a first compass device, and the second sensor device has a second compass device.

5. The hand-held tool system as claimed in claim 1, wherein the hand-held power tool includes at least one communication device configured for wireless data transmission.

6. The hand-held tool system as claimed in claim 3, further comprising: an enabling device, configured to compare the measured values of the first sensor device and the measured values of the second sensor device and to enable use of the hand-held power tool only if the compared measured values correspond. The hand-held tool system as claimed in claim 1, wherein the first sensor device has at least one camera sensor configured to sense predefinable orientation points of the hand-held power tool in order to determine the alignment of the hand-held power tool with respect to the wall device in dependence on the predefinable orientation points.

8. The hand-held tool system as claimed in claim 3, wherein at least one of the first sensor device and the second sensor device has an antenna device having a directional characteristic.

9. The hand-held tool system as claimed in claim 1, wherein the wall device is configured as a mobile computer including a fastening member for fastening the wall device to the wall.

10. A method for operating a hand-held tool system having a hand-held power tool and a wall device, comprising: fastening the wall device to a wall, the wall device having at least one first sensor device; sensing an alignment of the hand-held power tool in relation to the wall device with the first sensor device; and operating the hand-held tool system in dependence on the sensed alignment.

Description

[0014] The invention is to be explained in greater detail in the following on the basis of exemplary embodiments.

[0015] For this purpose:

[0016] FIG. 1 shows a first exemplary embodiment of an advantageous hand-held power tool system,

[0017] FIG. 2 shows a second exemplary embodiment of the advantageous hand-held power tool system, and

[0018] FIG. 3 shows a third exemplary embodiment of the hand-held tool system, in a simplified representation in each case.

[0019] FIG. 1 shows a hand-held tool system 1, in a simplified representation. The hand-held tool system 1 has a hand-held power tool 2, which in the present case is realized as a power drill. The hand-held tool system 1 additionally has a wall device 3. The wall device 3 is disposed on a wall 4, on which work is to be performed by means of the hand-held power tool 2. For this purpose, the wall device 3 has a housing 5, which in the present case is fastened to an outer surface 7 of the wall 4 by an adhesive strip 6.

[0020] The wall device 3 has a first sensor device 8. The latter has an acceleration sensor 9 and an optional compass device 10. The acceleration sensor 9 is realized as a 3-axis acceleration sensor, which determines the position of the wall device 3 in space. Furthermore, the wall device 3 has a control unit 11, for evaluating the measured values sensed by the sensor device 8, and an indicator device 12. The indicator device 12 has, for example, a controllable display or one or more light sources, in particular light-emitting diodes.

[0021] The hand-held tool system 1 additionally has a second sensor device 13, which is assigned to the hand-held power tool 2. The sensor device 13 has a second acceleration sensor 14, which is likewise realized as a 3-axis acceleration sensor, for sensing the position of the hand-held tool 2 in space. Optionally, the second sensor device 13 has a second compass device 15.

[0022] The hand-held tool system 1 additionally has means 16 that enable data to be exchanged between the wall device 3 and the hand-held power tool 2. In particular, the means 16 are realized as a wireless communication interface, for which purpose the hand-held power tool 2 and the wall device 3 each have, in particular, a corresponding communication device 17, 18, for example in the manner of a Bluetooth module. A control unit 19 assigned to the hand-held power tool 2 evaluates, for example, the measured values sensed by the sensor device 13, and sends these to the communication device 17 of the wall device 3 by means of the communication device 18 assigned to the hand-held power tool 2. The control unit 11 compares measured values sensed by the sensor device 13 with those sensed by the sensor device 8, in order to determine the alignment of the hand-held power tool 2 with respect to the wall device 3. An appropriate disposition and/or calibration of the sensor device 8 of the wall device 3 enables the alignment of the hand-held power tool 2 with respect to the wall 4, and in particular with respect to the outer surface 7 of the wall 4 on which work is to be performed, to be determined therefrom. In particular, a correct alignment is identified if the measured values of the sensor device 8 and 13 correspond.

[0023] If the sensed measured values correspond, the correct alignment is indicated to the user by means of the indicator device 12, for example by the activation of a colored light source. Alternatively or additionally, it may be provided that, if the measured values correspond, the control unit 19 of the hand-held power tool 2 enables the operation of the hand-held power tool 2, and, if the measured values do not correspond, prevents the operation of the hand-held power tool 2. The control unit 19 thus constitutes an enabling device 20, which allows the hand-held power tool 2 to be operated only if the alignment with respect to the wall 4 corresponds to a desired alignment. A desired alignment in this case is to be understood to mean, in particular, a perpendicular alignment of the drill tip of the hand-held power tool 2 in relation to the wall 4, or to the surface 7.

[0024] The accuracy of the sensed alignment is further increased by taking account of the measured values of the compass devices 10 and 15. In particular, it is ensured by means of the compass devices 10 and 15 that the hand-held power tool 2 is aligned with the tool tip toward the wall 4.

[0025] FIG. 2 shows a second exemplary embodiment of the hand-held tool system 1, wherein elements already known from FIG. 2 are denoted by the same references and, to that extent, reference is made to the description given above. In the following, it is substantially only the differences that are described.

[0026] According to the exemplary embodiment of FIG. 2, it is provided that, unlike the preceding exemplary embodiment, the wall device 3 has, as a sensor of the sensor device 8, a camera sensor 21, which is realized to sense and recognize the hand-held power tool 2, and in particular orientation features 22 of the hand-held power tool 2, in order to determine the alignment of the hand-held power tool 2 in relation to the wall device 3 on the basis of the alignment of orientation features 22 in relation to each other, or the appearance of the orientation feature or features themselves. For this purpose, the hand-held power tool 2 in this case is provided with three colored, prominent orientation points 23, which are disposed at a distance apart from each other. The camera sensor 21 senses the three marking points 23, and compares their alignment and arrangement to a reference arrangement stored in a memory of the sensor device 8, in order to determine whether the hand-held power tool 2 is in a desired, or the specified, alignment.

[0027] Instead of the marking points 23, an inscription 24 may also be used as an orientation feature 22. The inscription 24, represented exemplarily here as capital letters ABCD, appears with differing distortion, depending on the alignment of the hand-held power tool 2 in relation to the wall device 3. By storing a reference image, or reference alignment, of the letters, the control unit 11 can compare the image sensed by the camera sensor 21 with the stored image, and thus deduce a correct alignment of the hand-held power tool 2, in particular taking account of a scaling that represents the distance of the hand-held power tool 2 from the wall device 3.

[0028] Clearly, it is also conceivable for the camera device 21 to be realized to sense all recognition features, or orientation features 22, of the hand-held power tool 2 that are shown here, and to evaluate them accordingly.

[0029] FIG. 3 shows a further exemplary embodiment of the hand-held tool system 1, which differs from the preceding exemplary embodiments in that the first sensor device 8 has an antenna device 25 having a directional characteristic. The antenna device 25 emits signals, and receives either reflections of these signals, or signals of a corresponding antenna device 26 having a directional characteristic that is provided on the hand-held power tool 2. The control unit 11 identifies the alignment of the hand-held power tool 2 in relation to the wall 4 on the basis of the propagation times of emitted and received signals.

[0030] Whereas, in the preceding exemplary embodiments, the housing 5 of the wall device 3 is additionally fastened to the wall 4 by the adhesive strip 6, in the present exemplary embodiment it is provided that the wall device has fastening tabs 27, through which, for example, short nails can be driven to fasten the wall device 3 to the wall 4.

[0031] In order to ensure an advantageous alignment of the wall device 3 on the wall 4, the wall device 3 may also be provided with an optional spirit level 28, such that the correct alignment of the wall device 3 on the wall 4 can be achieved, in order to ensure correct determination of the alignment of the hand-held power tool 2.

[0032] The housing 5, particularly in the case of the exemplary embodiment of FIG. 1, may also be a holding shell 29, in which there can be inserted a mobile computer, in particular a mobile telephone 30, having a corresponding acceleration sensor 9 and a communication device 17, and a control unit 11. The mobile telephone 30 can then be used as a wall device 3, as described previously, or constitute the latter, for determining the alignment of the hand-held power tool 2. It is also conceivable to use the mobile telephone 30 in the exemplary embodiment of FIG. 2, in which case the mobile telephone 30 then also provides the camera sensor 21, on the side having the display, to enable optical determination of the alignment of the hand-held power tool 2.