Driving tool with a flywheel mechanism

Abstract

In a driving tool, in particular a nail gun, having a housing in which a driving unit, which can be actuated via an operating unit (150), is arranged for driving in, in particular shooting in, driving means, wherein the driving unit has a flywheel mechanism, and wherein a battery pack is provided for the mains-independent power supply of the driving unit, a control device is provided which is designed to check necessary prerequisites for a shot of the driving unit in order to determine a respective readiness of the driving unit to fire, wherein the operating unit (150) has at least one display element (230, 221) which is designed to display a state of the driving tool determined by the control device as a function of the respective readiness to fire.

Description

Prior ArtThe present invention relates to a driving device, in particular a nail gun, having a housing in which a driving unit, which can be actuated via an operating unit, is arranged for driving in, in particular shooting in, driving means, wherein the driving unit has a flywheel mechanism, and wherein a battery pack is provided for supplying the driving unit with power independently of the grid.From the prior art, such a driving device designed as a nail gun is known. The nail gun has a housing in which a driving unit, which can be actuated via an operating unit, is arranged for driving in, in particular shooting in, driving means. The driving-in unit has a flywheel mechanism and a battery pack for supplying power to the driving-in unit independently of the grid.Disclosure of the InventionThe invention relates to a driving device, in particular a nail gun, having a housing in which a driving unit, which can be actuated via an operating unit, is arranged for driving in, in particular shooting in, driving means, wherein the driving unit has a flywheel mechanism, and wherein a battery pack is provided for supplying power to the driving unit independently of the grid. A control device is provided which is designed to check required preconditions for a shot of the driving-in unit in order to determine a respective shot readiness of the driving-in unit, wherein the operating unit has at least one display element which is designed to display a state of the driving-in device determined by the control device as a function of the respective shot readiness.The invention thus makes it possible to provide a driving device in which uncomplicated and comfortable handling of the driving device can be made possible by indicating a respective firing readiness of the driving unit.The at least one display element is preferably designed to visualize a release state in which a shot is possible or a blocking state in which no shot is possible.Thus, the existing or missing readiness for firing of the driving device can be visualized simply and efficiently.Preferably, when checking the required preconditions, the control device detects an operating temperature assigned to the driving-in unit and / or a current voltage state of the battery pack, wherein the blocking state is assigned to an over- or under-operating temperature and / or an under-voltage state of the battery pack.Thus, safe and reliable operation of the driving-in device can be made possible.The operating temperature can preferably be determined by measuring a temperature of a motor winding of the drive-in unit, a temperature of an associated lifting magnet winding, and / or a battery temperature.Thus, a suitable operating temperature can be determined in a simple manner.According to one embodiment, when checking the required preconditions, the control device detects a rotational speed assigned to the driving unit, in particular an engine rotational speed or flywheel rotational speed, wherein the locked state is assigned to an engine rotational speed or flywheel rotational speed which is below a predefined minimum rotational speed.Thus, a further required prerequisite of the driving-in unit for safe operation can be checked in a simple and uncomplicated manner.Furthermore, the present invention relates to a method for controlling a driving device, in particular a nail gun, which has a housing in which a driving unit, which can be actuated via an operating unit, for driving in, in particular shooting in, driving means is arranged, wherein the driving unit has a flywheel mechanism, wherein a battery pack is provided for supplying the driving unit with power independently of the grid, wherein a control device is provided which is designed to check required preconditions for a shot of the driving unit in order to determine a respective shot readiness of the driving unit, and wherein the operating unit has at least one display element which is designed to display a state of the driving device determined by the control device as a function of the respective shot readiness. The method comprises the following steps:• activating the operating unit,• calculating an available shot energy by the controller and comparing the calculated shot energy with a required shot energy, and• if the available shot energy is greater than or equal to the required shot energy, release a shot, and• If the available shot energy is less than the required shot energy, prevent a shot.The invention thus enables the provision of a method for controlling a driving device, in which uncomplicated and comfortable handling of the driving device can be made possible by indicating a firing readiness of the driving unit.Preferably, when a shot is released, a release state is indicated in the at least one display element and, when a shot is prevented, a blocking state is indicated in the at least one display element.Thus, the existing or missing readiness for firing of the driving device can be visualized simply and efficiently.The calculation of the available shot energy preferably comprises a determination of an operating temperature assigned to the driving unit and / or a current voltage state of the battery pack.The available shot energy can thus be determined in a simple manner.Preferably, the calculation of the available shot energy comprises a determination of a rotational speed assigned to the driving unit, in particular an engine rotational speed or flywheel rotational speed.Thus, the available shot energy can be easily and easily determined.Brief Description of the DrawingsThe invention is explained in more detail in the following description with reference to exemplary embodiments shown in the drawings. The following are shown: FIG. 1 shows a perspective view of a driving-in device designed as a nail gun with an operating unit, FIG. 2 shows an enlarged view of the operating unit of FIG. 1 with a first and second activated display element, FIG. 3 shows an enlarged view of the operating unit of FIGS. 1 and 2 with the first activated display element, and FIG. 4 shows a flow chart to illustrate a use of the operating unit from FIGS. 1 to 3.DESCRIPTION OF THE EMBODIMENTSIn the figures, elements having the same or comparable function are provided with identical reference numerals and are described in more detail only once.FIG. 1 shows an exemplary driving device 100 having a housing 110 in which a driving unit 120 for driving in, in particular shooting in, driving means is arranged. The driving-in device 100 is preferably designed as a nail gun. The driving device 100 is preferably designed as a flywheel nailer, wherein the driving unit 120 has a flywheel mechanism 125.The housing 110 illustratively has a handle 115. Furthermore, an on / off switch 130 of the driving device 100 is assigned to the handle 115 by way of example. Preferably, a foot region 118 is arranged on a region of the handle 115 facing away from the driving-in unit 120. As illustrated, a battery pack 190 for the mains-independent power supply of the driving device 100 can be arranged on the foot region 118. Furthermore, an operating element 117 for actuating or activating the driving-in unit 120 is preferably arranged on the handle 115. Furthermore, the driving-in device 100 preferably has a driving-in agent magazine 140. The driving-in means magazine 140 is designed to receive a multiplicity of driving-in means and to release them again when it is shot in.Preferably, a control device 180 is provided, which is designed to check required preconditions for a shot of the driving-in unit 120 in order to determine a respective shot readiness of the driving-in unit 120. For this purpose, an operating unit 150 has at least one display element ( 230, 221 in FIG. 2 ), which is designed to display a state of the driving tool 100 determined by the control device 180 as a function of the respective firing readiness. According to one embodiment, the operating unit 150 is arranged on an upper side 119 of the foot region 118, but could also be arranged at any other location on the housing 110.According to one specific embodiment, control device 180 detects an operating temperature assigned to driving unit 120 and / or a current voltage state of battery pack 190 when checking the required preconditions for a shot. In this case, a blocking state ( 231 in FIG. 2 ) is preferably assigned to an operating temperature above or below and / or to an undervoltage state of battery pack 190. The operating temperature can preferably be determined by measuring a temperature of a motor winding of the drive-in unit 120, a temperature of an associated lifting magnet winding, and / or a battery temperature.Preferably, when checking the required preconditions, the control device 180 alternatively or additionally detects a rotational speed assigned to the driving-in unit 120, in particular an engine rotational speed or flywheel rotational speed. The locked state ( 231 in FIG. 2 ) can be assigned alternatively or additionally to an engine speed or flywheel speed which is below a predefined minimum speed. In this case, the locked state ( 231 in FIG. 2 ) can be activated, for example, if the predefined minimum rotational speed has not been reached multiple times.FIG. 2 shows the operating unit 150 of the driving-in device 100 from FIG. 1 and illustrates the display elements 221, 230 assigned to the operating unit 150. Hereinafter, a method of controlling the driving apparatus 100 of FIG. 1 using the operation unit 150 will be described by way of example.In a preferred method for controlling the driving-in device 100 of FIG. 1, the operating unit 150 is activated first. This is done by activating the driving tool 100 by the on / off switch 130 of FIG. 1, then an available shot energy is calculated by the controller 180 of FIG. 1, and the calculated shot energy is compared with a required shot energy. If the available shot energy is greater than or equal to the required shot energy, a shot is released. If the available shot energy is less than the required shot energy, one shot is prevented.According to one embodiment, when the shot is released, a release state is indicated in the at least one indicator element 230. When preventing a shot, a locked state 231 is displayed in the at least one display element 230, as illustrated in FIG. 2.The at least one display element 221 is activated in FIG. 2 and indicates that a required prerequisite for a shot is not fulfilled or a battery pack-related fault is present. In particular, the display element 221 illustrates, by way of example, that a current battery voltage of the battery pack 190 of FIG. 1 is too low for one shot. Preferably, the display element 221 is illuminated in a warning color, e.g. red, or in any other form of representation which is assigned to the blocking state 231.According to one embodiment, the operating unit 150 comprises the at least one additional display element 230 for displaying a current status of the driving device 100 of FIG. 1. In FIG. 2, the display element 230 is likewise activated and thus illustrates a fault. The display element 230 is preferably illuminated in a warning color, e.g. red, or in any other form of representation which is assigned to the blocking state 231, and illustrates the blocking state 231. The display element 221 and / or the display element 230 are automatically deactivated by the control device 180 of FIG. 1 after correction of the fault state.FIG. 3 shows the operating unit 150 from FIGS. 1 and 2 in an exemplary non-battery pack-related fault state. Here, only the display element 230 is activated illustratively. A non-battery pack-related fault state corresponds, for example, to an under- or over-operating temperature or to blocking of the drive-in unit 120 of FIG. 1 At excessively low or excessively high temperatures, a lifting magnet winding assigned to the drive-in unit 120 cannot retrieve a required power and / or a motor assigned to the drive-in unit 120 cannot retrieve a required rotational speed for one shot. Alternatively, the operating unit 150 can each have a separate display element for a temperature-dependent fault state and / or a rotational-speed-dependent fault state.FIG. 4 shows a flow chart 400 illustrating an example operation of the controller 180 of the driving tool 100 of FIG. 1. In a first step 410, the driving device 100 of FIG. 1 is activated via the on / off switch 130 of FIG. 1 and subsequently placed in a standby state 411. In a following step 412, a query is made as to whether a shot has been initiated, for example via the operating element 117 of FIG. 1 ; if a shot has been initiated by a user of the driving device 100, a determination of the required shot energy is carried out in a step 413, followed by a query in a step 414 as to whether the required shot energy is present. If the required shot energy is present, then the shot is released in step 415 and in step 416, the display element 230 visualizes the release. The standby state 411 is then activated again via a connection 425. If the query in step 412 reveals that no shot was initiated via the operating element 117 of FIG. 1, the standby state 411 is maintained.If the available shot energy, which was queried in step 414, is not sufficient, the blocking state 231 is activated in a step 417 and the display elements 221, 230 of FIGS. 2 and 3 are preferably activated in a step 418. The standby state 411 is then activated via a connection 426.As described above, the blocking state 231 may alternatively or optionally be activated depending on a temperature and / or a rotational speed. In this case, the temperature is preferably an over- or under-operating temperature of the battery pack 190, a temperature of a motor winding of the driving unit 120 and / or a temperature of the associated lifting magnet winding. The rotational speed is preferably an engine rotational speed or flywheel rotational speed.

Claims

Driving-in device (100), in particular a nail gun, having a housing (110), in which a driving-in unit (120), which can be actuated via an operating unit (150), is arranged for driving in, in particular shooting in, driving-in means, wherein the driving-in unit (120) has a flywheel mechanism (125), and wherein a battery pack (190) is provided for supplying the driving-in unit (120) with power independently of the grid, characterized in that a control device (180) is provided, which is designed to check required preconditions for a shot of the driving-in unit (120) in order to determine a respective shot readiness of the driving-in unit (120), wherein the operating unit (150) has at least one display element (230, 221), which is designed to display a state of the driving device (100) determined by the control device (180) as a function of the respective firing readiness.Driving-in device according to Claim 1, characterized in that the at least one display element (230) is designed to visualize a release state in which a shot is possible or a blocking state (231) in which no shot is possible.Driving-in device according to Claim 2, characterized in that, when checking the required preconditions, the control device (180) detects an operating temperature assigned to the driving-in unit (120) and / or a current voltage state of the battery pack (190), wherein the blocking state is assigned to an over- or under-operating temperature and / or an under-voltage state of the battery pack.Driving-in device according to Claim 3, characterized in that the operating temperature can be determined by measuring a temperature of a motor winding of the driving-in unit (120), a temperature of an associated lifting magnet winding, and / or a battery temperature.Driving-in device according to one of Claims 2 to 4, characterized in that, when checking the required preconditions, the control device (180) detects a rotational speed assigned to the driving-in unit (120), in particular an engine rotational speed or flywheel rotational speed, wherein the locked state (231) is assigned to an engine rotational speed or flywheel rotational speed which is below a predefined minimum rotational speed.Method for controlling a driving device (100), in particular a nail gun, which has a housing (110), in which a driving unit (120), which can be actuated via an operating unit (150), is arranged for driving in, in particular shooting in, driving means, wherein the driving unit (120) has a flywheel mechanism (125), wherein a battery pack (190) is provided for supplying the driving unit (120) with power independently of the grid, wherein a control device (180) is provided which is designed to check required preconditions for a shot of the driving unit (120) in order to determine a respective shot readiness of the driving unit (120), wherein the operating unit (150) has at least one display element (230, 221), which is designed to display a state of the driving device (100) determined by the control device (180) as a function of the respective firing readiness, and wherein the method has the following steps: • activating the operating unit (150), • calculating an available shot energy by the control device (180) and comparing the calculated shot energy with a required shot energy, and • if the available shot energy is greater than or equal to the required shot energy, releasing a shot, and • if the available shot energy is less than the required shot energy, preventing a shot.Method according to Claim 6, characterized in that, when a shot is released, a release state is displayed in the at least one display element (230), and, when a shot is prevented, a blocking state (231) is displayed in the at least one display element (230).Method according to Claim 6 or 7, characterized in that the calculation of the available shot energy comprises a determination of an operating temperature assigned to the driving unit (120) and / or of a current voltage state of the battery pack (190).Method according to one of Claims 6 to 8, characterized in that the calculation of the available shot energy comprises a determination of a rotational speed assigned to the driving unit (120), in particular an engine rotational speed or flywheel rotational speed.

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