Construction site radio device

A construction site radio device, which has at least one arithmetic unit, a radio device and a charging device which is provided for the purpose of inductively charging a hand tool battery.

CROSS REFERENCE

The present application claims the benefit under 35 U.S.C. §119 of German Patent Application No. DE 102012203485.4 filed on Mar. 6, 2012, which is expressly incorporated herein by reference in its entirety.

BACKGROUND INFORMATION

A construction site radio device which has a charging device is described in European Patent No. EP 987 783 B1.

SUMMARY

An example construction site radio device is provided which has at least one arithmetic unit, a radio device and a charging device, which is provided for the purpose of inductively charging a hand tool battery. The construction site radio device preferably has at least one radio housing which is protected against environmental influences at least according to protection class IP 53. An “arithmetic unit” is understood to be, in particular, a controller having a processor, a memory unit and/or an operating, control and/or computing program stored in the memory unit. The arithmetic unit is preferably designed as a microcontroller. In particular, a “radio device” is understood to be a device which is provided for the purpose of receiving at least one radio station and outputting the received radio station to a listener at least acoustically. “Provided” is understood to mean, in particular, specially programmed, configured and/or equipped. A “charging device” is understood to be, in particular, a device which is provided for the purpose of transmitting charging energy to a hand tool battery during a charging operation. A “hand tool battery” is understood to be, in particular, a battery which is provided for the purpose of supplying a hand tool with power, in particular during an intended use. The hand tool battery is preferably detachably connected to the hand tool in an operational state, in particular without a tool. Alternatively or additionally, a hand tool battery may be integrated into the hand tool. In particular, a “hand tool” is understood to be a portable tool, including for example, a power drill, a combi drill, a percussion drill, a saw, a plane, a screwdriver, a mortiser, a grinder, an angle grinder, a gardening tool, a construction site measuring device and/or a multifunction tool. The phrase, “inductively charge” is understood to mean, in particular, that the charging device transmits the charging energy to the hand tool battery via an electrical insulator with the aid of a magnetic field. The charging device preferably has a charging coil which transmits the charging energy to a charging coil of the hand tool battery during a charging operation. Due to the design of the construction site radio device according to the present invention, it is possible to transmit the charging energy to the hand tool battery in a manner which is particularly insensitive to environmental influences. In particular, the charging device does not have any sensitive, bare contact surfaces for contacting the hand tool battery.

In another embodiment, it is proposed that the radio device has at least one speaker, the arithmetic unit being provided for the purpose of outputting a signal which is dependent on a charge state of the hand tool battery via the speaker, whereby the operator may be advantageously informed of the charge state with a minimum amount of structural complexity. A “speaker” is understood to be, in particular, a means which is provided for the purpose of converting an electrical signal into an acoustic signal, in particular in an audible frequency range. In particular, a “charge state of the hand tool battery” is understood to be a parameter which is dependent on an amount of energy stored in the hand tool battery. “Dependent on a charge state of the hand tool battery” is understood to mean, in particular, that the signal is assigned to a charge state of the hand tool. The phrase “output a signal” is understood to mean, in particular, that the arithmetic unit generates, with the aid of the speaker, a sound which signals a charge state to the operator in at least one operating state. The arithmetic unit preferably signals at least an end of the charging operation to the operator with the aid of the speaker. The arithmetic unit advantageously outputs, via the speaker, a signal which is dependent on a positioning of the hand tool battery relative to the charging coil of the charging device.

It is furthermore provided that the example construction site radio device has at least one display, the arithmetic unit being provided for the purpose of outputting a piece of information which is dependent on a charge state of the hand tool battery via the display, whereby an advantageous representation of the charge state may be achieved. In particular, a “display” is understood to be a means which is provided for the purpose of visually outputting a piece of information to the operator. The display is preferably designed as an illuminant, particularly advantageously as a display. The phrase “output a piece of information via the display” is understood to mean, in particular, that the display outputs a visual signal to the operator in at least one operating state, the visual signal being assigned to the information which is dependent on the charge state.

It is furthermore proposed that the arithmetic unit is provided for the purpose of outputting at least one piece of radio information via the display, whereby it is possible to display the charge state and the radio information to the operator, in particular on a single display, with a minimum amount of structural complexity. A “piece of radio information” is understood to be a piece of information about a radio reception which appears meaningful to those skilled in the art, however, advantageously a frequency of a radio station, a name of a radio station, a volume and/or a piece of RDS information. In particular, the arithmetic unit is provided for the purpose of outputting the information which is dependent on the charge state of the hand tool battery and the radio information via at least one identical display means.

It is also proposed that the construction site radio device includes an operating element, the arithmetic unit being provided for the purpose of at least controlling a charge state as a function of a parameter of the operating element, whereby charging as needed is advantageously made possible depending on the situation. For example, hand tool batteries may be charged in a settable sequence. In particular, an “operating element” is understood to be a means which is provided for the purpose of accepting an operator input from an operator. For example, the operating element may be designed as a switch, as a button, as a slider, as a knob, as a touch screen and/or as another operating element. A “parameter of the operating element” is understood to be, in particular, a state of the operating element which is dependent on the operator input, in particular an electrically retrievable state thereof. In particular, “at least control” is understood to mean control and/or regulate.

It is furthermore proposed that the arithmetic unit is provided to output at least one radio station as a function of a parameter of the operating element, whereby the charging operation and the radio station may be configured for the operator, in particular with the aid of a single operating element or just a few operating element, with a minimum amount of structural complexity. In particular, the radio device and the charging device are settable by the operator with the aid of the same operating element.

In one advantageous embodiment of the present invention, it is provided that the charging device has a charging plane and at least one charging coil which is provided for the purpose of charging a hand tool battery placed on the charging plane, thereby making it possible to dispense with a fastener. A “charging plane” is understood to be, in particular, a surface of a housing of at least the charging device which is provided with an at least largely flat design in an area of a charging coil. In particular, a “charging coil” is understood to be a coil which receives and/or transmits energy during a charging operation. The charging coil of the charging device preferably transmits energy which charges a hand tool battery during a charging operation. In particular, a charging coil of the hand tool battery receives the energy. The charging coil preferably includes at least one coil winding and, in particular, a coil core. Alternatively or additionally, the charging coil could be designed as an air coil. The charging coil is preferably designed as a printed conductor on a circuit board or particularly preferably as a wound coil. Most preferably, the charging device is provided for the purpose of charging at least one non-fastened hand tool battery.

In another embodiment, it is proposed that the charging plane has at least one coil marking, which makes it possible to comfortably position the hand tool battery for the charging operation. A “coil marking” is understood to be, in particular, a marking which indicates a position of the charging coil of the charging device to an operator. The coil marking preferably indicates to the user where he is to place the hand tool battery for a charging operation.

It is furthermore proposed that the charging device has a fastener and at least one charging coil which is provided for the purpose of charging a hand tool battery fastened by the fastener, whereby a positioning of the hand tool battery is advantageously maintained during a movement and/or during a transport of the construction site radio device. A “fastener” is understood to be, in particular, a means which is provided for the purpose of fastening the hand tool battery in a force-fit manner and/or advantageously in a form-locked manner during a charging operation.

It is furthermore proposed that the radio device and the charging device are designed to be separated by an operator, whereby a particularly flexible use is made possible. In particular, the phrase “designed to be separated by an operator” is understood to mean that the radio device and the charging device have a coupling element which is designed to be detached by an operator and which fastens the radio device and the charging device at least to each other in at least one operating state. The radio device and the charging device are preferably designed to be separated by an operator without tools. Alternatively, the radio device and the charging device may be inseparable by an operator and/or be separable only with a loss of function of the radio device and/or the charging device.

DETAILED DESCRIPTION OF EXAMPLE EMBODIMENTS

FIG. 1shows a system36awhich has a construction site radio device10aand two hand tool batteries18a,19a. Construction site radio device10aincludes an arithmetic unit12a, a radio device14aand a charging device16a. Charging device16ahas two charging coils28a,34a. Charging coils28a,34aeach inductively charge one of hand tool batteries18a,19aduring a charging operation. The first of charging coils28ais provided for the purpose of charging one of hand tool batteries18a, which rests unfastened on a charging plane26aof charging device16a. Hand tool battery18amay be connected to a hand tool38aduring the charging operation, as illustrated herein. Charging plane26ahas a coil marking, which is illustrated inFIG. 2and which an operator may use to align hand tool battery18afor a charging operation. The coil marking is designed as an annular color marking on charging plane26a. Arithmetic unit12afurthermore outputs an acoustic signal to an operator via radio device14awhen hand tool battery18ais positioned correctly.

Charging device16ahas a fastener32awhich fastens a second of hand tool batteries19aduring a charging operation. Fastener32ais designed as a recess delimited by charging device16a, as illustrated in the second exemplary embodiment. Alternatively or additionally, the fastener could be designed as another means for fastening a hand tool battery during a charging operation. Fastener32afastens hand tool battery19ain a form-locked manner. Second hand tool battery19ahas a lock, which is not illustrated in greater detail and which is provided for the purpose of interlocking with charging device16aduring the charging operation. The second of charging coils34ais thus provided for the purpose of charging a hand tool battery19afastened by fastener32a. Alternatively, a charging device could charge at least two resting or fastened hand tool batteries during a charging operation.

Radio device14ahas two speakers20a, a display22aand operating element24a. Arithmetic unit12ais provided for the purpose of outputting a signal which is dependent on a charge state of hand tool battery18avia speaker20a. Arithmetic unit12aoutputs a sound via speaker20awhenever one of hand tool batteries18a,19ais 80% or 100% charged. Display22ais designed as a display. Arithmetic unit12ais provided for the purpose of outputting a piece of information which is dependent on a charge state of hand tool battery18avia display means22a. Arithmetic unit12aoutputs an instantaneous charge state of hand tool battery18a,19aduring the charging operation, for example in percent. Arithmetic unit12ais furthermore provided for the purpose of outputting a piece of radio information via same display means22a, for example a name of a set radio station. Arithmetic unit12ais provided for the purpose of regulating a charging operation and an output of a radio station as a function of a parameter of operating element24a.

Construction site radio device10ahas a radio housing40awhich connects radio device14aand charging device16ato each other in such a way that they are inseparable by an operator.

FIG. 2shows an additional exemplary embodiment of the present invention. The following descriptions and figures are largely limited to the differences between the exemplary embodiments, it being possible to refer, in principle, to the figures and/or descriptions of the other exemplary embodiment, in particular inFIG. 1, with regard to equivalent components, in particular in reference to components having the same reference numerals. To distinguish between the exemplary embodiments, the letter a is placed after the reference numerals of the exemplary embodiment inFIG. 1. The letter a is replaced by the letter b in the exemplary embodiment inFIG. 2.

FIG. 2shows an example construction site radio device10baccording to the present invention, which has a radio device14band a charging device16b. Charging device16bis provided for the purpose of inductively charging a hand tool battery19b. Radio device14band charging device16bare designed to be separated by an operator. Radio device14band charging device16bare preferably interlocked with each other in at least one operating state. Construction site radio device10bhas an operating element42bwhich is provided for the purpose of releasing a connection established by an operator between radio device14band charging device16b. Radio device14band charging device16beach have an arithmetic unit12b,13bwhich communicate with each other in at least one operating state. In this operating state, arithmetic unit12bof radio device14band arithmetic unit13bof charging device16bcommunicate with each other wirelessly. Charging device16bhas a display means44b, which is provided for the purpose of displaying a charge state independently of radio device14b. Construction site radio device10bhas a radio housing40bwhich connects radio device14band charging device16bto each other in such a way that they are inseparable by an operator. For this purpose, radio housing40bhas a charging housing part44band a radio housing part46bwhich is designed to be separated from charging housing part42b.