HAND TOOL MACHINE

Description

[0001] The present invention relates to a hand-held power tool according to the preamble of claim 1. State of the art

[0002] A hand-held power tool comprising a drive unit, a housing, and at least one user interface is already known from the prior art. The drive unit can be operated by means of at least one hand switch. The user interface includes at least one control element.

[0003] A hand-held power tool according to the preamble of claim 1 is known from US 2012 / 106133 A1. US 2012 / 106133 A1 discloses a hand-held power tool equipped with a lighting device for illuminating the work area, wherein the lighting device comprises a light source and a switch for actuating or adjusting a drive motor of the hand-held power tool forms part of the lighting device, such that light rays emitted by the light source are directed to the work area via the switch. Disclosure of the invention

[0004] The present invention relates to a hand-held power tool comprising a drive unit, a housing, and at least one user interface. The drive unit can be operated by means of at least one hand switch. The user interface includes at least one control element. It is proposed that the user interface includes at least one work area lighting unit, wherein the work area lighting unit comprises at least one light source and at least one light guide element.

[0005] The invention provides an integrated user interface in which a control unit and a work area lighting unit are integrated into a single module. The user interface is particularly compact and robust at the same time.

[0006] The power tool is specifically designed as a rotary impact wrench. The rotary impact wrench has at least one impact mechanism, in particular a rotary impact mechanism. During operation, the impact mechanism generates high torque peaks to loosen or tighten seized fasteners. The impact mechanism is connected to the drive motor via the gearbox. Additionally, the impact mechanism is connected to the output shaft.

[0007] The drive unit comprises at least one drive motor and, in one embodiment, may include at least one gearbox. The drive motor may, in particular, be designed as at least one electric motor. The gearbox may be designed as at least one planetary gearbox, which may, for example, be switchable. The invention can also be applied to other types of motors or gearboxes. Additionally, the hand-held power tool includes a power supply, which is provided for battery operation using batteries, in particular hand-held power tool battery packs, and / or for mains operation. In a preferred embodiment, the power supply is designed for battery operation. Within the scope of the present invention, a "hand-held power tool battery pack" is understood to be an assembly of at least one battery cell and a battery pack housing.The power tool battery pack is advantageously designed to supply power to commercially available battery-operated power tools. The at least one battery cell can, for example, be a lithium-ion battery cell with a nominal voltage of 3.6 V. By way of example, the power tool battery pack can comprise up to ten battery cells, although other numbers are also conceivable. Both battery-operated and mains-powered versions of the power tool are well known to those skilled in the art, which is why the details of the power supply will not be discussed here.

[0008] The drive unit is designed to be operated via a hand switch. When the hand switch is activated by a user, the drive unit is switched on and the hand-held power tool is started. If the hand switch is no longer activated by the user, the drive unit is switched off. Preferably, the drive unit is electronically controllable and / or adjustable in such a way that reversing operation and setting a desired rotational speed are possible. It is also conceivable that the hand switch is a latching hand switch that can be locked in at least one position in at least one actuation state.

[0009] The hand-held power tool features a user interface with a control element. Specifically, the user interface is located on the housing. The user interface can serve as an interface between the user and the hand-held power tool. The control element is designed to receive input from the user. Advantageously, the control element serves at least to set at least one operating mode, in particular a speed setting, and / or at least to control and / or regulate the work area lighting unit. It is conceivable that the control element can also be assigned to set an operating mode that can be configured by the user. Furthermore, the control element can also serve to set another operating mode that would appear useful to a person skilled in the art.

[0010] The user interface can convert user input into a signal, particularly an electrical one. The user interface can then forward the signal to a signal processing unit. The user interface can also display information using at least one display element. Advantageously, the user interface includes this display element. The display element is configured to show at least one piece of information about an operating state, the operating mode, and / or other operating information. The display element can be a light source and / or a display, or other display elements that would be considered useful by those skilled in the art. In one embodiment, the display element can have three LEDs for indicating the speed level.

[0011] The operating state can be, for example, "on" or "off". The operating mode can be, for example, at least a rotational speed, at least a speed setting, or at least a blow energy. Examples of operating information are "pairing with an electrical device", "connected to an electrical device", "not connected to an electrical device", or at least a battery charge level.

[0012] Furthermore, other examples of operating states, operating modes and / or operating information are possible that may seem useful to the expert.

[0013] In one embodiment, the signal processing unit is arranged within the housing of the handheld power tool. The signal processing unit is specifically designed to receive signals from the user interface, process them, and output them. The signal processing unit processes the signals into at least one output signal and outputs it. This output signal can then be sent to the user interface and / or control the drive unit. For example, the hand switch can also be connected to the signal processing unit. The signal processing unit can be configured as a microprocessor or a microcontroller.

[0014] In a particularly advantageous manner, the user interface includes at least one additional control element. Similar to the control element, this additional control element can serve to set at least one operating mode, in particular a speed setting, and / or to control and / or regulate the work area lighting unit. In this context, the control element and / or the additional control element can switch the work area lighting unit on or off, as well as continuously or incrementally increase or decrease the luminous intensity, in particular the brightness.

[0015] The control element is a user-operated element that allows the user to change at least the operating state, operating mode, and / or operating information. The control element can be designed as at least one push button, at least one slider, at least one rotary element, or at least one tilting element. Other embodiments of the control element are also conceivable. The push button is designed to be pressed by a user. The slider is designed to be moved by a user. The rotary element is designed to be rotated by a user. The tilting element is designed to be tilted by a user. Depending on the embodiment, a combination of the aforementioned control elements is also possible.

[0016] In one embodiment, the control element can have at least one printed and / or profiled area. In particular, the printed and / or profiled area is formed on a control surface of the control element. The purpose of the printed and / or profiled area is to indicate at least one function of the control element to the user. The function is indicated on the control surface by the printed and / or profiled area, for example, in the form of a light source, such as a light bulb, or other comparable figures, symbols, or the like, in the form of a hammer with a screw, or in the form of a tachometer. However, other representations of the control element's functions are also conceivable. Due to the printed and / or profiled area, it is immediately apparent to the user how the control element can be operated.The printed area is formed by at least one imprint on the operating surface. The profiled area is formed by ribs, grooves, bumps, or other comparable elements to indicate the function. Furthermore, the profiled area is designed to prevent the user's finger from slipping during operation of the control element. The at least one actuation is as described above. In a preferred embodiment, the at least one actuation is at least one pressing of the control element.

[0017] In one embodiment, the control element and / or the additional control element has at least one return element. The return element is designed to guide the control element and / or the additional control element into at least one neutral position. The neutral position is characterized by the fact that the control element and / or the additional control element can be actuated in the neutral position. In particular, the return element has at least a restoring effect, such that after at least one actuation, the control element and / or the additional control element is guided into the neutral position. Subsequently, the control element and / or the additional control element is arranged in the neutral position, so that at least one further actuation is possible. Preferably, the return element is designed as at least one spring element.In one embodiment, the spring element is shaped as a dome-shaped spring, although a coil spring or the like is also conceivable. The return element, in particular the spring element, and especially the dome-shaped spring, enables direct haptic feedback when the control element and / or the other control element is actuated, thereby increasing user comfort.

[0018] The work area lighting unit comprises the light source and the light guide element. The work area lighting unit is designed to emit light. The light is preferably emitted towards a work area located directly in front of the power tool. This can illuminate both the work area and the interchangeable tool attachment. For example, the light source can be at least one LED. The light source emits the light. The light guide element is designed to guide the light. Furthermore, the light guide element is designed to refract the light and direct it to the work area. Preferably, the light guide element can be designed as a light focusing element, in particular a focusing lens.It is conceivable that the light source and the light guide element are formed in one piece, and that in one embodiment the at least one LED forms the light focusing element, in particular the focusing lens.

[0019] Preferably, the housing has at least one power supply holding device, in particular a hand-held power tool battery pack holding device, on which the user interface is arranged. The power supply holding device is specifically designed to hold, and in particular accommodate, the power supply, especially the hand-held power tool battery pack. Additionally, the power supply holding device is designed to connect the power supply, in particular the hand-held power tool battery pack, to the housing in a tool-free manner and to ensure the power supply to the hand-held power tool. The power supply holding device, together with a connected hand-held power tool battery pack, forms at least one base with at least one standing surface. In particular, the hand-held power tool can be supported, and in particular placed, on a standing surface by means of the base. The housing also includes a handle.The handle is designed to be gripped by the user in order to operate the hand-held power tool. The power supply holding device is specifically located on the handle.

[0020] The user interface is advantageously arranged on the power supply holding device. In particular, the user interface is arranged on the power supply holding device in such a way that the user interface's work area lighting unit can provide the greatest possible illumination of the work area.

[0021] Alternatively, the user interface can also be located on the handle, particularly in the area of ​​the hand switch, or at a tool holder. The drive unit can be connected to an output shaft via the impact mechanism. The tool holder is formed at a free end of the output shaft, particularly in a direction extending away from the drive unit. The tool holder is designed to accommodate interchangeable tools. The tool holder can be configured as a chuck, a polygonal internal holder, or a polygonal external holder. Typical examples of tool holders are well known from the prior art, which is why they will not be discussed in detail here.

[0022] According to the invention, the user interface comprises at least one support element designed to support the user interface and to transfer operating forces into the housing. In one embodiment, the support element can accommodate the user interface. The support element can accommodate the user interface by positive locking, force locking, and / or material locking, and form an operative connection with the housing. When the user actuates the operating element of the user interface, operating forces can be generated. These operating forces are absorbed by the user interface and then transferred to the support element. Preferably, the support element absorbs these operating forces and transfers them to the housing. For this purpose, the support element is operatively connected to the housing. In particular, the user interface is received by a recess in the housing and secured to the housing.The housing is designed to absorb the operating forces. These forces can be generated, for example, by pushing, sliding, pulling, or turning the control element.

[0023] The support element is configured, in particular, as at least one control element and / or as at least one light guide element. The control element supports at least the control element. In particular, the control element can form the control element itself. In one embodiment, the control element and the control element can be configured as a membrane keypad, although an embodiment as a circuit board with mechanical switches or pushbuttons is also conceivable. In a membrane keypad configuration, the control element and the control element form a closed system. The closed system offers the advantage of preventing the ingress of moisture and dirt into the membrane keypad, thus enabling an IP protection class of up to IP54, and in particular IP64, to be achieved.Furthermore, the control element is designed to receive and transmit signals generated by the actuation of the control element. In particular, the control element transmits the signals to the signal processing unit. Additionally, the control element is designed to absorb the operating forces exerted by the control element.

[0024] The light guide element can absorb the operating forces generated by the control element and transmit them to the housing. For this purpose, the light guide element has a base plate. The base plate is in direct contact with the housing. Specifically, the base plate absorbs the operating forces and transmits them to the housing. Furthermore, the light guide element supports at least the light guide element and aligns it with the housing. In particular, the light guide element is designed to position the light guide element on the housing in such a way that the light guide element is appropriately positioned relative to the light source and the work area. This ensures optimal illumination of the work area during operation of the power tool.

[0025] One embodiment provides for a control element and a light guide element. The light guide element supports the control element. The light guide element can be attached to the housing. The light guide element thus absorbs the operating forces acting on the control element when the control element is actuated and transfers them into the housing.

[0026] In particular, the control element and / or the light guide element can include the display element. Preferably, the control element includes the display element for displaying the information as described above.

[0027] In a particularly preferred embodiment, the control element is attached to the light guide element. In one embodiment, the control element and the light guide element can be detachably or permanently attached to one another. The control element and the light guide element can form a positive, force-fit, and / or material-fit connection. For example, the control element and the light guide element can be connected by means of a screw connection, snap connection, adhesive connection, or clamp connection, and other connection types that appear useful to those skilled in the art are conceivable. Preferably, the control element and the light guide element are bonded together.

[0028] Advantageously, the light guide element has at least one receptacle for electrical contact with the user interface. This receptacle can be configured, for example, as a feed-through element, preferably a feed-through opening, or as a recess. In one embodiment, the electrical contact between the user interface and the signal processing unit is provided by at least one signal line. The signal line is designed to electrically connect the user interface to the signal processing unit. In one embodiment, the control element and / or the control element can incorporate the signal line. In another embodiment, the signal line is connected to the control element and / or to the control element. It is also conceivable that the signal line is integrally formed with the control element. The signal line is connected to the signal processing unit.The signal line is received by the receiver. Preferably, the feedthrough opening allows the signal line to pass through. The signal processing unit can have a connector for connecting to the signal line. The connection between the signal line and the connector can be detachable or permanent. For example, the connector is designed as a plug-in coupling. However, it is also conceivable that the signal line is directly connected to the signal processing unit by means of a soldered connection. The signal line is designed to receive signals generated by the operation of the control element and transmit them to the signal processing unit. In addition, the signal line can transmit the output signals from the signal processing unit to the user interface. Furthermore, the display element can be connected to the signal processing unit via the signal line.

[0029] In an alternative embodiment, the user interface is directly connected to the signal processing unit, in particular the connecting element. For this purpose, the user interface can, for example, have plug contacts that can be connected to the connecting element.

[0030] In a particularly advantageous manner, the light guide element has at least one volume compensation element, at least for the control element. In particular, the volume compensation element is formed on the light guide element. In one embodiment, the volume compensation element is configured as at least one recess, in particular a groove. The volume compensation element is designed to compensate for at least one volume. In particular, the volume compensation element can also be designed to compensate for at least one temperature and / or at least one pressure. The volume compensation element is operatively connected to the control element, so that when the control element is actuated, the operating pressure can be compensated by means of the volume compensation element. The operating pressure can arise between the control element and the light guide element when the control element is actuated.Furthermore, the volume compensation element can be operatively connected to the display element. The display element can heat up during operation, and in one embodiment, this heat can be compensated for by means of the volume compensation element.

[0031] Preferably, the support element, in particular the light guide support element, has at least one recess through which at least the light guide element can be passed. The recess can be designed as at least one pass-through element, in particular a pass-through opening. In one embodiment, the light guide support element and the light guide element are formed in two parts.

[0032] The light guide element is preferably attached to the support element, in particular the light guide support element. In one embodiment, the light guide element is attached to the support element, in particular the light guide support element, by a form-fit, force-fit, and / or material-fit connection. For example, the attachment can be achieved by means of a snap connection, a screw connection, a clamp connection, an adhesive connection, or another type of connection that appears suitable to a person skilled in the art. The light guide element and the support element can be formed in two parts.

[0033] In a preferred embodiment, the support element, in particular the light guide support element, and the light guide element are formed in one piece. This allows for a cost-effective and reliable user interface. In particular, a reliable connection between the support element, especially the light guide support element, and the light guide element can be ensured.

[0034] Advantageously, the control element at least partially encloses the light guide element. This allows for a compact and cost-effective user interface.

[0035] Preferably, the support element, in particular the light guide element, has at least one bearing unit for mounting the user interface on the housing of the hand-held power tool. The bearing unit is designed to mount the user interface on the housing. In one embodiment, the bearing unit on the support element, in particular the light guide element, can be designed, for example, as an at least partially circumferential frame and / or as an at least partially circumferential web. Preferably, the bearing unit is integral with the support element, in particular the light guide element.

[0036] The bearing unit preferably comprises a first bearing element that is at least partially circumferential, and the housing has at least one retaining element that is at least partially circumferential. The first bearing element and the retaining element form an operative connection for the vertical mounting of the user interface. In one embodiment, the first bearing element is formed as a web that is at least partially circumferential and is integrally formed on the support element, in particular the light carrier element. For example, the first bearing element can be positively, force-, and / or materially bonded to the support element, in particular the light carrier element. The retaining element is designed to hold at least the first bearing element on the housing. In particular, the retaining element is positively and / or force-fitted to the first bearing element.In one embodiment, the retaining element can be formed on the housing as at least one projection, so that the retaining element forms a positive fit with the first bearing element. In another embodiment, the retaining element can, for example, be designed to be at least partially elastically deformable, so that the retaining element forms a frictional fit with the first bearing element. Preferably, the retaining element is integral with at least a part of the housing.

[0037] In one embodiment, the retaining element secures the first bearing element, at least by frictional engagement, particularly for the vertical mounting of the user interface. The retaining element can clamp the support element to the housing by means of the first bearing element, thereby establishing a clamping connection. This enables safe and reliable operation of the user interface. The vertical mounting here is to be understood relative to a reference plane. The reference plane is the base plate of the light guide support element. In an alternative embodiment, the first bearing element is connected to the retaining element by means of a screw connection, a snap connection, or another type of connection that would appear appropriate to a person skilled in the art.

[0038] Preferably, the bearing unit comprises a second, at least partially circumferential, bearing element, and the housing has at least one, at least partially circumferential, fixing element. The second bearing element and the fixing element form a functional connection for the horizontal mounting of the user interface. In one embodiment, the second bearing element is designed as an at least partially circumferential frame. The second bearing element is arranged on the support element, in particular the light carrier element. By way of example, the second bearing element can be connected to the support element, in particular the light carrier element, by a form-fit, force-fit, and / or material-fit connection. The fixing element is designed to fix at least the second bearing element to the housing. In one embodiment, the fixing element is formed by at least a part of the housing.In particular, the fixing element on the housing can be configured as at least one further projection. It is also possible that the fixing element is integral with at least one part of the housing. The fixing element is designed to be connectable to the second support element, at least by positive and / or non-positive locking. In one embodiment, the fixing element secures the second support element, at least by positive locking, for the horizontal mounting of the user interface. This ensures secure and reliable mounting of the user interface. The horizontal mounting here is to be understood as relative to the reference plane, in particular the base plate of the light guide element. However, it is also conceivable that the second support element is connected to the fixing element by means of a clamping connection, a snap connection, an adhesive connection, or another type of connection that would appear appropriate to a person skilled in the art. Brief description of the drawings

[0039] The invention is explained below with reference to preferred embodiments. The drawings below show: Fig. 1 a schematic view of a hand-held power tool according to the invention with a user interface; Fig. 2 a perspective view of the hand-held machine tool with the user interface; Fig. 3 a sectional view of the user interface on the hand-held machine tool; Fig. 4 a perspective view of the user interface; Fig. 5a a perspective view of a light guide element with a light guide support element; Fig. 5b a perspective view of a control carrier element with one control element and another control element; Fig. 6a a top view of a first alternative embodiment of the user interface; Fig. 6b a top view of a second alternative embodiment of the user interface Fig. 6c a schematic sectional view of a third alternative embodiment of the user interface; Fig. 6d a schematic sectional view of a fourth alternative embodiment of the user interface; Description of the exemplary implementations

[0040] Fig. 1 Figure 1 shows a hand-held power tool 100 according to the invention, which is here configured as an exemplary cordless impact wrench. The hand-held power tool 100 comprises an output shaft 124, a tool holder 150, and an exemplary impact mechanism 122, e.g., a rotary impact mechanism. The hand-held power tool 100 has a housing 110 with a handle 126. The hand-held power tool 100 can be mechanically and electrically connected to a power supply for battery operation to provide an independent power supply, so that the hand-held power tool 100 is configured as a cordless power tool 100. A hand-held power tool battery pack 130 serves as the power supply. However, the present invention is not limited to cordless power tools, but can also be applied to mains-powered, i.e., mains-operated, hand-held power tools or pneumatically operated hand-held power tools.

[0041] The housing 110 includes, for illustrative purposes, a drive unit 111 and the impact mechanism 122. The drive unit 111 further comprises an electric drive motor 114, which is powered by the hand-held power tool battery pack 130, and a gearbox 118. The gearbox 118 can be designed as at least one planetary gearbox. The drive motor 114 is designed such that it can be operated, for example, via a hand switch 128, so that the drive motor 114 can be switched on and off. The drive motor 114 can be any type of motor, such as an electronically commutated motor or a DC motor. Advantageously, the drive motor 114 is electronically controllable and / or adjustable, so that reversing operation and a desired rotational speed can be achieved. The design and operation of a suitable drive motor are well known to those skilled in the art, which is why they will not be discussed in more detail here.

[0042] The gearbox 118 is connected to the drive motor 114 via a motor shaft 116. The gearbox 118 is designed to convert the rotation of the motor shaft 116 into a rotation between the gearbox 118 and the impact mechanism 122 via a drive element 120, for example, a drive shaft. Preferably, this conversion occurs such that the drive element 120 rotates relative to the motor shaft 116 with increased torque but a reduced rotational speed. For illustrative purposes, a motor housing 115 is associated with the drive motor 114, just as a gearbox housing 119 is associated with the gearbox 118. Both the motor housing 115 and the gearbox housing 119 are shown, by way of example, arranged within the housing 110. However, it is also conceivable that the drive motor 114 and the gearbox 118 could be arranged directly within the housing 110 if the hand-held power tool 100 is designed in an "open frame" construction.

[0043] The impact mechanism 122 is connected to the drive element 120 and includes, for example, an impact body 125 that generates sudden, high-intensity rotational impulses. These sudden rotational impulses are transmitted via the impact body 125 to the output shaft 124, for example, a work spindle. The impact mechanism 122 comprises an impact mechanism housing 123, and the impact mechanism 122 can also be arranged in another suitable housing, such as the gearbox housing 119. The exemplary impact mechanism 122 is designed to drive the output shaft 124. A tool holder 150 is provided on the output shaft 124. Preferably, the tool holder 150 is integrally formed and / or formed on the output shaft 124. Preferably, the tool holder 150 is arranged in an axial direction 132 pointing away from the drive unit 111.The tool holder 150 is designed here as an internal hexagon socket, similar to a bit holder, which is intended to hold an insert tool 140. The insert tool is shaped like a screwdriver bit with a multi-sided external coupling 142. The type of screwdriver bit, for example, of the HEX type, is well known to those skilled in the art. However, the present invention is not limited to the use of HEX screwdriver bits, but other tool holders that appear useful to those skilled in the art can also be used, such as HEX drill bits or SDS quick-release tools. In addition, the design and function of a suitable bit holder are well known to those skilled in the art.

[0044] The hand-held power tool 100 comprises the housing 110 and a user interface 200 according to the invention. The user interface 200 includes a control element 202, a further control element 204, and a work area lighting unit 210; see also Fig. 2 bis 6 The control element 202 and the further control element 204 each have a return element in the form of a dome-shaped spring 207, see below. Fig. 6c and 6d The user interface 200 is located on the housing 110.

[0045] The housing 110 comprises the drive unit 111, the hand switch 128, the power supply (here configured as the power tool battery pack 130), and the user interface 200. The housing 110 also includes a power supply holding device 160. Furthermore, the user interface 200 is arranged on the power supply holding device 160. The power supply holding device 160 accommodates the power tool battery pack 130 and forms a base 162 with a contact surface. The power tool battery pack 130 can be detached from the power supply holding device 160 without tools. The housing 110 also includes the handle 126 and the power supply holding device 160. The handle 126 can be gripped by the user. In one embodiment, the power supply holding device 160 is arranged on the handle 126. The hand-held power tool 100 can be set down using the stand 162.In this embodiment, the user interface 200 is arranged on the power supply holding unit 160.

[0046] Fig. 2 Figure 1 shows a perspective view of the hand-held power tool 100 with the user interface 200. The work area lighting unit 210 includes a light source 212 and a light guide element 214; see also [reference to be added]. Fig. 3 The work area lighting unit 210 emits a beam of light to illuminate a work area located directly in front of the hand tool 100, and, if applicable, the interchangeable insert tool 140.

[0047] The user interface 200 comprises the control element 202 and the additional control element 204. The control element 202 is used to set an operating mode, in this embodiment a speed setting. The additional control element 204 controls and / or regulates the work area lighting unit 210. The additional control element 204 switches the work area lighting unit 210 on or off. As described above, it is also conceivable that the control element 202 changes a different operating mode. Both the control element 202 and the additional control element 204 are designed as push buttons that can be pressed by the user.

[0048] Furthermore, the user interface 200 includes a support element 220. The support element 220 carries the user interface 200 and transfers any operating forces into the housing 110. Here, the support element 220 is configured as an operating support element 222 and as a light guide support element 224; see also Fig. 3 , 4 and 6 The control carrier element 222 carries the control element 202 and the further control element 204. The light guide carrier element 224 carries the light guide element 214, see also Fig. 3 Additionally, the user interface 200 includes a display element 230. The display element 230 shows information about an operating mode, in this case the speed level. In this embodiment, the control carrier element 222 includes the display element 230.

[0049] Fig. 3 Figure 1 shows a sectional view of the user interface 200 on the hand-held machine tool 100. In addition, a further enlarged section 190 is shown. Fig. 3 The user interface 200 is accommodated in a recess 112 of the housing 110 and protrudes from the recess 112. The work area lighting unit 210 comprises the light source 212 and the light guide element 214. Here, the light source 212 is designed as an LED. The light guide element 214 is shaped as a focusing lens. The light source 212 emits light. The light guide element 214 focuses the light from the light source 212 and directs it as a light beam towards the work area.

[0050] The light guide element 224 of the user interface 200 carries the light guide element 214 and aligns it with the housing 110. The light guide element 224 includes a bearing unit 240 for mounting the user interface 200 on the housing 110 of the hand-held power tool 100; see also Fig. 4 bis 6 The bearing unit 240 comprises a first circumferential bearing element 242, see also Fig. 4 bis 6 The housing 110 includes a retaining element 246. The first bearing element 242 forms a functional connection with the retaining element 246 for the vertical mounting of the user interface 200. The vertical mounting is relative to a reference plane. In this embodiment, the reference plane is the base plate 225 of the light guide element 224. The first bearing element 242 is shaped as a circumferential rib and is integrally formed with the light guide element 224. The retaining element 246 is shaped to be at least partially elastically deformable. The retaining element 246 is formed from a soft-grip material that at least partially surrounds the housing 110. The retaining element 246 forms a projection on the housing 110 that circumferentially surrounds the recess 112 and projects into the recess 112. Thus, the retaining element 246 fixes the first bearing element 242 at least force-fit for the vertical mounting of the user interface 200.

[0051] Furthermore, the bearing unit 240 has a second circumferential bearing element 244, see also Fig. 4 and 5The housing 110 includes a partially circumferential fixing element 249. The second mounting element 244 forms a functional connection with the fixing element 249 for the horizontal mounting of the user interface 200. The horizontal mounting is relative to the reference plane, here the base plate 225 of the light guide element 224. The second mounting element 244 is formed as a frame on three sides of the light guide element 224. Furthermore, the second mounting element 244 is formed integrally with the light guide element 224. The fixing element 249 secures the second mounting element 244 to the housing 110. The fixing element 249 is formed on the housing 110 by a hard component of the housing 110. In this embodiment, the fixing element 249 is a circumferential frame. The fixing element 249 positively locks the second support element 244 for the horizontal support of the user interface 200.In this embodiment, a section of the first bearing element 242 is supported on the fixing element 249 for the horizontal mounting of the light guide element 224. The hard component of the housing 110 secures the second bearing element 244 in three sections 248 of the recess 112 by means of an undercut for the vertical mounting of the light guide element 224.

[0052] The hand-held power tool 100 has a signal processing unit 250. The signal processing unit 250 is located in the housing 110. The signal processing unit 250 receives signals from the user interface 200 and processes them. After processing the signals, the signal processing unit 250 outputs them in the form of an output signal. The signal processing unit 250 is designed as a microprocessor.

[0053] The light guide element 224 includes a receptacle 226 for electrical contacting the user interface 200, see also Fig. 5a The receptacle 226 is shaped as a feedthrough opening 227. A signal line 252 establishes the electrical contact between the user interface 200 and the signal processing unit 250. In this embodiment, the operating carrier element 222 is connected to the signal line 252; see also Fig. 4 and 5bThe signal line 252 extends through the through-opening 227 and connects the user interface 200 to the signal processing unit 250. The signal processing unit 250 includes a connecting element 254 for connection to the signal line 252. The connecting element 254 is designed as a plug connector 256. This allows the signal line 252 to be detachably connected to the connecting element 254. In this embodiment, the signal line 252 is formed on the control element 222. The signal line 252 receives signals generated by the actuation of the control element and transmits them to the signal processing unit 250. Furthermore, the signal line 252 transmits the output signals from the signal processing unit 250 to the user interface 200. Here, the display element 230 is also connected to the signal processing unit 250 via the signal line 252.In this embodiment, the connecting element 254, the signal processing unit 250 and the light source 212 are arranged on a circuit board 216 and electrically connected to each other.

[0054] Fig. 4 Figure 222 shows a perspective view of the user interface 200. The control element 222 is attached to the light guide element 224. The control element 222 and the light guide element 224 are connected by an adhesive bond. The control element 222 is C-shaped and partially surrounds the light guide element 224.

[0055] Fig. 5a Figure 224 shows a perspective view of the light guide element 224 with the light guide element 214. In this embodiment, the light guide element 224 and the light guide element 214 are integrally formed. The light guide element 224 absorbs the operating forces generated by actuating the control element 202 and / or the further control element 204 and transmits them to the housing 110. The light guide element 224 comprises a volume compensation element 228 for the control element 202, the further control element 204, and the display element 230. The volume compensation element 228 is formed on the light guide element 224. The volume compensation element 228 is designed as a C-shaped groove. The volume compensation element 228 compensates for temperature and / or pressure fluctuations. The volume compensation element 228 is operatively connected to the control element 202 and the further control element 204.It compensates for operating pressure when the control element 202 and / or the further control element 204 is actuated, which can occur between the control carrier element 222 and the light guide carrier element 224.

[0056] Fig. 5b Figure 222 shows a perspective view of the control carrier element 222 with the control element 202 and the additional control element 204. The display element 230 and the signal line 252 are also shown. The control carrier element 222, with the control element 202 and the additional control element 204, is designed here in the manner of a membrane keypad. The control carrier element 222 receives the operating forces from the control element 202 and / or the additional control element 204, which are generated by actuation. Additionally, the control carrier element 222 transmits the operating forces to the light guide carrier element 224.

[0057] Fig. 6a Figure 1 shows a top view of a first alternative embodiment of the user interface 200. The control element 202 and the additional control element 204 each have a printed area 203, 205. The printed area 203, 205 is formed on a control surface of the control element 202 and the additional control element 204, respectively. The printed area 203, 205 indicates a function of the control element 202 and the additional control element 204 to the user. The function for the additional control element 204 is indicated on the control surface in the form of a lightbulb. The function for the control element 202 is indicated on the control surface in the form of a hammer with a screw.

[0058] Furthermore, the first alternative embodiment shows the display element 230 in the form of a speed indicator element 232. The speed indicator element 232 has three LEDs for displaying the selected speed setting. Additionally, the display element 230 is configured as a radio connection indicator element 234. The radio connection indicator element 234 shows the user whether an active radio connection exists between the hand-held power tool 100 and another electrical device. The radio connection indicator element 234 is configured as an LED. Furthermore, the display element 230 is configured here as a symbol 236 to indicate a wireless connection. This is intended to show the user that the hand-held power tool 100 can establish a wireless connection.

[0059] Fig. 6b shows a top view of a second alternative embodiment of the user interface 200. In contrast to Fig. 6a Here, the indicator element 230 is additionally configured as a work area lighting indicator element 231 and as a temperature indicator element 238. The work area lighting indicator element 231 shows the user whether the work area lighting unit 210 is switched on or off. The work area lighting indicator element 231 is configured here as two LEDs. The temperature indicator element 238 displays the temperature of the hand-held power tool 100 to the user. It is configured as a single LED.

[0060] Fig. 6c Figure 1 shows a schematic sectional view of a third alternative embodiment of the user interface 200. In this third alternative embodiment, the control carrier element 222 includes the light guide element 214. The light guide element 214 is connected to the control carrier element 222. In this embodiment as well, the control carrier element 222 is attached to the light guide element 224.

[0061] Fig. 6d Figure 1 shows a schematic sectional view of a fourth alternative embodiment of the user interface 200. As in the third alternative embodiment, the control element 222 includes the light guide element 214 and is connected to it. In contrast to the third alternative embodiment, the light source 212 is arranged on the light guide element 224. In this embodiment as well, the control element 222 is attached to the light guide element 224.

Claims

1. Hand-held power tool (100) having a drive unit (111), wherein the drive unit (111) is activatable by means of at least one manual switch (128), having a housing (110) and having at least one user interface (200), wherein the user interface (200) comprises at least one operating element (202) and the user interface (200) has at least one workplace illumination unit (210), wherein the workplace illumination unit (210) comprises at least one illumination means (212) and at least one light guide element (214), characterized in that the user interface (200) has at least one support element (220) which is designed to support the user interface (200) and to dissipate operating forces that occur into the housing (110).

2. Hand-held power tool (100) according to Claim 1, characterized in that the support element (220) is designed as at least one operator support element (222), wherein the operator support element (222) supports at least the operating element (202), and / or is designed as at least one light guide support element (224), wherein the light guide support element (224) supports at least the light guide element (214).

3. Hand-held power tool (100) according to Claim 2, characterized in that the light guide support element (224) has at least one receptacle (226) for electrically contacting the user interface (200).

4. Hand-held power tool (100) according to Claim 2 or 3, characterized in that the light guide support element (224) has at least one volume compensation element (228) at least for the operating element (202).

5. Hand-held power tool (100) according to one of Claims 1 to 4, characterized in that the support element (220), in particular the light guide support element (224), has at least one clearance through which at least the light guide element (214) is able to be passed through.

6. Hand-held power tool (100) according to one of Claims 1 to 5, characterized in that the light guide element (214) is fastened by the support element (220), in particular the light guide support element (224).

7. Hand-held power tool (100) according to one of Claims 1 to 6, characterized in that the support element (220), in particular the light guide support element (224), and the light guide element (214) are formed in one piece.

8. Hand-held power tool (100) according to one of Claims 1 to 7, characterized in that the support element (220), in particular the light guide support element (224), has at least one mounting unit (240) for mounting the user interface (200) on the housing (110) of the hand-held power tool (100).

9. Hand-held power tool (100) according to Claim 8, characterized in that the mounting unit (240) comprises a first at least partially encircling mounting element (242), and the housing (110) has at least one at least partially encircling holding element (246), wherein the first mounting element (242) and the holding element (246) form an operative connection for the vertical mounting of the user interface (200).

10. Hand-held power tool (100) according to Claim 8 or 9, characterized in that the mounting unit (240) comprises a second at least partially encircling mounting element (244), and the housing (110) has at least one at least partially encircling fixing element (249), wherein the second mounting element (244) and the fixing element (249) form an operative connection for the horizontal mounting of the user interface (200).

11. Hand-held power tool (100) according to one of Claims 1 to 10, characterized in that the operator support element (222) is fastened to the light guide support element (224).

12. Hand-held power tool (100) according to one of the preceding claims, characterized in that the operating element (202) serves at least for setting at least an operating mode, in particular a rotating speed stage, and / or at least for controlling in an open loop and / or closed loop the workplace illumination unit (210).

13. Hand-held power tool (100) according to one of the preceding claims, characterized in that the user interface (200) comprises at least one further operating element (204), wherein the further operating element (204) serves at least for setting at least an operating mode, in particular a rotating speed stage, and / or at least for controlling in an open loop and / or closed loop the workplace illumination unit (210).

14. Hand-held power tool (100) according to one of the preceding claims, characterized in that the housing (110) has at least one energy supply holding device (160), in particular a hand-held power tool rechargeable battery pack holding device, on which the user interface (200) is disposed.