Electrical equipment

Abstract

To provide an improved concept for arranging a plurality of energy storage devices on a housing of an electrical device.SOLUTION: The present invention relates to an electrical device, in particular an electrical device in the form of a suction device 10 or a machine tool, with a housing 20 in which at least one electrical load, in particular a drive motor 11D is arranged. The electrical device has a power supply unit 80 with an energy storage device receptacle 81, for the electrical power supply of the electrical load, in particular the drive motor 11D, and in the interior of the receptacle, there are arranged at least two device interfaces 90A, 90B for the detachable connection of respective energy storage interfaces 190A, 190B of an electrical energy storage devices 170A, 170B, in particular battery packs. The device interfaces are arranged on opposing side walls 83, 84 of the receptacle 81, so that the energy storage devices can be arranged on the device interfaces 90A, 90B with mutually facing bottom walls 175.SELECTED DRAWING: Figure 1

Description

Technical Field

[0004]

[0001] The present invention relates to an electrical device in the form of, for example, a suction device or a machine tool and / or a mobile electrical device having a housing in which at least one electrical load, in particular a drive motor, is arranged. The electrical device has a power supply with an energy storage device housing, and at least two device interfaces are arranged therein for the electrical power supply of the electrical load, in particular the drive motor, for the detachable connection of an energy storage device interface of an electrical energy storage device, in particular a battery pack.

Background Art

[0002] The energy storage device is, for example, a so-called battery pack that can be detachably connected to an electrical device, such as a suction device or a machine tool, especially a hand-held machine tool. In this type of electrical device, in order to increase mobility and / or electrical output, a plurality of, for example, two such energy storage devices need to be simultaneously available for energy transmission. However, the power density of rechargeable energy storage devices is still very low, and thus they are relatively large. Therefore, the energy storage devices have a large accommodation volume, and thus the energy storage devices can still be gripped by an operator, for example, to remove them from the energy storage device housing.

Summary of the Invention

Problems to be Solved by the Invention

[0003] Therefore, an object of the present invention is to provide an improved concept for arranging a plurality of energy storage devices in the housing of a mobile or fixed electrical device of the aforementioned type.

Means for Solving the Problems

[0004] To solve this problem, in the type of electrical device described at the beginning, particularly in a suction device or a machine tool, the device interface is intended to be located on the opposing side walls of the energy storage device housing, so that the energy storage devices can be placed on the device interface with their bottom walls facing each other.

[0005] The advantages of such a device are particularly evident in the fact that the energy storage device is arranged in a so-called bottom-to-bottom or bottom-wall-to-bottom structure, so that a region of the energy storage device housing extending adjacent to the bottom wall can be used as an operating space for operating or controlling the energy storage device. It is true that the work required to lay the wires to the device interface within the housing is greater. However, in contrast, there is a significant increase in ease of use.

[0006] Advantageously, the electrical device is a mobile electrical device. However, the present invention can be easily used in a fixed electrical device.

[0007] An electrical energy storage device includes, for example, multiple batteries. These batteries are arranged in series within the housing of each energy storage device. The batteries are connected to each other in series and / or parallel.

[0008] The electrical energy storage device is preferably a rechargeable electrical energy storage device. To charge each energy storage device, it is removable from the energy storage device housing. The energy storage device can be connected to a charging device for electrical charging, for example, using its energy storage device interface.

[0009] The battery has, for example, a cylindrical housing or a cylindrical shape. The battery is arranged, for example, in one or more layers within the housing of the energy storage device.

[0010] Preferably, the energy storage device interfaces of the mobile electrical device are connected to each other, for example, in series or in parallel, so that the supply voltage provided by the energy storage device is applied to the series connection (series circuit). For example, if the energy storage device interfaces are connected in parallel, the available current will be higher.

[0011] Other energy storage devices can also be readily placed in the energy storage device interface. Similarly, additional energy storage devices can be held within or on the energy storage device interface, which may have opposing bottom walls.

[0012] However, it is also possible to have an energy storage device interface in which fixed or mobile electrical devices are not located, for example, on the opposing side walls of the energy storage device housing.

[0013] Furthermore, the electrical device may also have at least one additional energy storage device housing, where, for example, an energy storage device interface is installed, located on opposite sides of the retaining walls of the energy storage device housing. The at least one energy storage device housing may further have only a single energy storage device interface for connecting to a single energy storage device. The at least one additional energy storage device housing path may further be configured as a housing pocket, housing compartment, etc.

[0014] If an electrical device is a mobile electrical device, it retains its mobility because, so to speak, it does not depend on a network interface.

[0015] For mobile or stationary electrical devices, there are multiple energy storage devices for adequate energy supply, i.e., at least two energy storage devices.

[0016] The electrical load is preferably an electric drive motor. However, the electrical device may include, for example, a charging interface for charging an additional electrical energy storage device. For example, the housing has an internal space in which a charging interface for charging an additional electrical energy storage device is located.

[0017] Machine tools include, for example, sewing machines and milling machines.

[0018] It is advantageous that the energy storage device housing has an insertion opening (insertion opening) into which an energy storage device can be inserted. The width of the insertion opening is preferably suitable for inserting or removing an energy storage device from the energy storage device housing, while other energy storage devices are located within the energy storage device housing. It is advantageous that the insertion opening is located on the outer wall of the housing.

[0019] In principle, the energy storage device housing may have an opening on the opposite side of the insertion opening, so that, for example, a kind of passage exists. Such a passage or passage opening is particularly suitable for cooling the energy storage device located in the energy storage device housing.

[0020] The energy storage device housing is preferably designed as a pocket or compartment in the outer wall of the housing.

[0021] Preferably, the energy storage device housing is intended to have a depth such that, when the energy storage devices are housed in the energy storage device housing, the energy storage devices do not protrude in front of the energy storage device housing and / or in front of the outer contour of the housing, or protrude by a maximum of 10% of the length of the storage devices. Thus, one or more energy storage devices do not interlock (engage) with the energy storage device housing and / or protrude in front of the wall in which the energy storage device housing is located, particularly in front of the outer wall of the housing.

[0022] The device interface is preferably intended to have a longitudinal guide contour for guiding engagement with the longitudinal guide contour of the energy storage device interface along the insertion axis. The longitudinal guide contour has, for example, guide grooves and guide protrusions that each extend along the insertion axis.

[0023] The insertion axes may be parallel to each other. However, it is also possible to arrange the insertion axes at an angle to each other, preferably at a maximum angle of 30°, particularly at a maximum angle of 20°, particularly preferably at a maximum angle of 10° or even more preferably at a maximum angle of 5°.

[0024] Preferably, the device interface further has a plurality of gripping contours that interact with a plurality of reverse gripping contours of the energy storage device interface, so that when the energy storage device is arranged on the device interface, it is intended to be held on the device interface by positive engagement (shape restraint) in the transverse direction with respect to their respective insertion axes. For example, the rear gripping contours are holding protrusions that each extend in the transverse direction with respect to the respective insertion axis and are engageable or releasable with each other by a sliding operation parallel to the insertion axis.

[0025] The device interface includes a plurality of latching devices for latching a plurality of latching devices of the energy storage device interface. The latching device includes, for example, one or more latching receptacles. The energy storage device interface has a latching device complementary to the latching device of the device interface, for example, at least one latching protrusion.

[0026] The device interface of the electrical device preferably includes a plurality of terminal devices for establishing an electrical connection with a plurality of terminal devices of the energy storage device interface of the energy storage device. These terminal devices of the device interface and / or the energy storage device interface include, for example, a plurality of energy supply terminals and / or a plurality of data terminals.

[0027] The terminal device includes, for example, spring contacts, terminal tongues, etc.

[0028] Preferably, the terminal device of the energy storage device interface and the terminal device of the device interface are intended to make electrical contact with each other when the energy storage device is plugged into the device interface.

[0029] It is advantageous if all the terminals of the terminal device of the device interface are arranged on the side wall on which the device interface is arranged and / or on a single side wall.

[0030] The power supply terminal has the function of supplying power to at least one electrical load of the electrical device, particularly the drive motor.

[0031] The data terminal of the device interface is used for data transmission from the energy storage device to the electrical device and / or vice versa. The data terminal is connected, for example, to the control unit of the electrical device, through which the control unit of the electrical device receives information regarding, for example, the state of charge and / or the voltage of each energy storage device from the energy storage device. The energy storage device may similarly have a control unit.

[0032] Each control unit of the energy storage device and / or the electrical device has, for example, one or more processors and memories, in which, for example, a control program for controlling the electrical device is stored, and a control program for controlling the energy storage device, for example a charging program, is stored for the energy storage device. Each control unit of the electrical device or the energy storage device is designed to execute the program code of each control program.

[0033] The energy storage device housing may be open on a side surface extending between side walls, for example. However, the energy storage device housing is preferably completely surrounded by a peripheral wall. The peripheral wall extends from the insertion opening into the internal space of the housing.

[0034] Preferably, the energy storage device housing is intended to have a connecting wall extending between opposing side walls, which defines an internal space for housing the energy storage device. The connecting wall is, for example, a cover wall or a bottom wall. The connecting wall and side walls form, for example, the periphery of the energy storage device housing.

[0035] When an energy storage device is housed in an energy storage device housing, it is advantageous to provide an operating space for gripping the energy storage device between at least one connecting wall and the energy storage device facing it. This means, for example, that the energy storage device can be gripped and / or operated from the side.

[0036] Preferably, the operating space is intended to have a width that accommodates an adult's finger and / or at least 1.5 cm, preferably at least 2 cm. Thus, the operator can extend their fingers into the operating space and grasp each energy storage device, for example, by a clamp-like grip.

[0037] For a bottom-to-bottom configuration of the energy storage device housed in the energy storage device housing, the following configurations are also possible, which can be implemented without further complications.

[0038] Preferably, the operating space is intended to extend continuously between the side walls of the energy storage unit housing. The operating space preferably has a constant height between the side walls. However, the operating space may also have a greater width in the area of ​​the bottom wall or near the bottom wall than near the side walls. In this case as well, it is still possible for an operator to easily interfere with the operating space to selectively operate one or the other energy storage unit, or both energy storage units simultaneously.

[0039] An advantageous concept is that an operating space is provided between each connecting wall and the energy storage device facing it, and through this operating space, the energy storage device can be clamped (clip-like) on its longitudinal sides opposite each other when it is housed in the energy storage device housing. This configuration, in particular, makes it easy to grip the energy storage device with a clamp-like grip.

[0040] A preferred embodiment is one in which an operating space is provided between each connecting wall and the energy storage device facing it, and through this operating space, the energy storage device is intended to be clamp-like (clip-like) on its longitudinal sides opposite each other when it is housed in the energy storage device housing. For example, an operator can grasp the energy storage device like a pair of tongs or clamps and pull it out of the energy storage device housing.

[0041] The energy storage device has an operating element on at least one longitudinal side that interferes with (engages with) the energy storage device housing when the energy storage device is housed in the energy storage device housing, and it is also advantageous that the energy storage device is removable from the device interface within the energy storage device housing by operation of the operating element. The operating element is used, for example, to adjust the latching mechanism of the energy storage device from a latched position that holds the energy storage device to the device interface to an unlocked position that allows the energy storage device to be removed from the device interface, for example by a pulling operation along an insertion shaft.

[0042] Such operating elements are advantageous when placed on opposite sides of the energy storage device, particularly on the longitudinal sides.

[0043] A preferred embodiment is intended in which the electrical device forms a suction device. In this case, a housing forms a suction device housing, in which a suction turbine is arranged in the internal space for generating a suction flow, the suction device housing having an inlet for passing the suction flow and a dust collection chamber for collecting dust contained in the suction flow, and a filter element for holding the dust in the dust collection chamber is arranged between the dust collection chamber and the suction turbine inlet opening of the suction turbine.

[0044] The insertion opening is advantageously an outer wall extending between the bottom wall and the top wall, and is located in the outer wall of the housing of an electrical device, particularly in the outer wall of the housing of a suction device.

[0045] For example, the housing of an electrical device formed by a suction device housing is preferably designed as a stacking housing that is designed to form a housing stack extending in the direction of the stacking axis, and at least one stacking container may be stacked below it and / or at least one stacking container may be stacked on top of it. The stacking container is, for example, another suction device. However, the stacking container may be, for example, a transport container for machine tools, particularly grinding machines and / or cutting machines, such as a grinding machine or a sewing machine. Dust and particles generated during the operation of the grinding machine or sewing machine can be sucked up using the suction device.

[0046] In other words, it is possible to loosely stack suction devices on stacking containers or stacking containers on suction device housings. However, the stacking housing and further stacking containers can, in some cases, engage with each other by positive engagement using positive engagement contours arranged on the stacking housings of the vacuum cleaner and stacking containers, so that they intersect with respect to the stacking axis and hold each other by positive engagement. For this purpose, for example, a plurality of legs may be arranged on one stacking container or stacking housing, and a plurality of housings for the legs may be arranged on the other stacking container or stacking housing, which support or house the legs and engage with each other by positive engagement.

[0047] It is advantageous for the suction device to have coupling means for coupling the suction device housing to a stacking container that is stacked on or below it along the stacking axis, and the coupling means of the suction device The steps are The coupling means of the stacking container is configured to interact with the coupling means, thereby securely connecting the suction device housing to the stacking container transversely to and parallel to the stacking axis using the coupling means. The coupling means advantageously have rear gripping contours positioned on the stacking container and the stacking housing, which can engage and disengage with each other transversely to the stacking axis. Furthermore, the coupling means has, for example, one or more locking elements, in particular at least one pivoting bolt and at least one locking projection into which the pivoting bolt can engage.

[0048] Advantageously, the suction device has a container attachment that can be stacked along a stacking axis as a stacking container on or below the suction device housing, the container attachment and the suction device housing have coupling means for securely connecting the suction device housing to the container attachment parallel to and transverse to the stacking axis, and the container attachment has a space for housing at least one component of the suction device, in particular for a suction hose.

[0049] The container attachment preferably has a passage opening that aligns with the suction port of the suction device housing when the container attachment is placed on top of the suction device housing, and the passage opening is intended and designed for pushing through and / or inserting a suction hose.

[0050] The suction device advantageously has a dust collection container located in or forming a dust collection chamber, the dust collection container being removable from the suction device housing and particularly designed in the form of a cassette. When the dust collection container is housed in the housing, it faces the suction port. Thus, the suction flow entering through the suction port can flow into the dust collection chamber of the dust collection container.

[0051] An energy storage device installed for power supply preferably has an energy storage device housing, and a battery device for supplying electrical energy is arranged inside it.

[0052] At least one device interface for detachably connecting to the energy storage device interface of an energy storage device is installed in the housing of the electrical device. The device interface and the energy storage device interface have multiple terminal devices for establishing electrical connections through these interfaces, i.e., the device interface and the energy storage device interface.

[0053] The energy storage device housing has, for example, longitudinal side walls extending between front walls. The longitudinal side walls and front walls are positioned, for example, between the bottom wall and interface wall, and they are opposite each other, together defining the internal space of the energy storage device housing.

[0054] Each energy storage device interface is located on an interface wall, allowing the energy storage devices to connect to each device interface of the electrical equipment.

[0055] Preferably, electrical terminals are not located on the bottom wall and / or longitudinal side walls and / or end walls. Advantageously, the energy storage device has electrical terminals only on the interface wall.

[0056] When housed in the energy storage device, the bottom walls of the energy storage device housing are advantageously aligned with each other.

[0057] It is advantageous that the bottom walls of the energy storage devices housed in the energy storage device housing extend parallel to each other and / or face each other on their flat sides.

[0058] As described above, the energy storage device housing preferably has side walls that face each other. The interface wall of the energy storage device preferably faces one of these side walls of the energy storage device housing when the energy storage device is housed in the energy storage device housing. Furthermore, the connecting wall preferably extends between the side walls that face each other. The longitudinal side walls of the energy storage device housing preferably face these connecting walls when the energy storage device is housed in the energy storage device housing.

[0059] The energy storage device advantageously includes a fan for generating a cooling airflow, which can flow into the energy storage device housing through an energy storage device inlet opening and out of the energy storage device housing through an energy storage device outlet opening.

[0060] Exemplary embodiments of the present invention are described below with reference to the drawings. [Brief explanation of the drawing]

[0061] [Figure 1] This diagram shows a schematic perspective view of the suction device from above, with the suction port of the device open. [Figure 2] This diagram shows the front view of the suction device according to Figure 1, roughly corresponding to detail D1 in Figure 1, with the suction port closed by a closing element. [Figure 3] Figures 1 and 2 show a rear perspective view of the suction device. [Figure 4] This figure shows a suction device according to the previous drawing, with the suction device housing open and the dust collection container removed, in a schematic perspective view from the front. [Figure 5] This diagram shows the apparatus according to Figure 4, where the dust collection container is housed in the suction device housing of the suction device. [Figure 6] This figure shows a suction device according to the previous drawing, with a container attachment in a diagonal front view. [Figure 7] This is a partial rear perspective view of the suction device according to Figure 3, with the energy storage device removed, and mainly corresponds to section D2 in Figure 3. [Figure 8] Figure 7 shows a portion of the suction device, but with a different perspective. [Figure 9] This figure shows the portion of the suction device shown in Figures 7 and 8 in a front view with an energy storage device. [Figure 10] The diagram corresponding to Figure 9 shows a device with only one energy storage device. [Figure 11] This figure shows a cross-section passing through a suction device that follows approximately the cutting line AA in Figure 10. [Figure 12] This figure shows a cross-section passing through a suction device that follows approximately the cutting line BB in Figure 10. [Figure 13] This is a perspective view of the energy storage device for a suction device. [Figure 14] This diagram shows a top-down front view of the suction device, roughly corresponding to section D1 in Figure 1, with the suction port open as shown in Figure 1. [Figure 15] The diagram corresponding to Figure 14 shows that the suction port is closed by a closing element. [Figure 16] This shows a cross-sectional view passing through the apparatus as shown in Figure 14, which is roughly along the cutting line CC in Figure 14. [Figure 17] This shows a cross-sectional view passing through the apparatus as shown in Figure 15, roughly along the cutting line DD in Figure 15. [Figure 18] This is a top-down front view of the open lower portion of the suction device, as shown in the previous drawing. [Figure 19] This is a cross-sectional view taken approximately along the cutting line EE that passes through the lower part of the suction device according to Figure 18. [Figure 20] This is a cross-sectional view passing through the suction device, approximately along the cutting line FF in Figure 18. [Figure 21] This is a cross-sectional view passing through the suction device, approximately along the cutting line GG in Figure 18. [Figure 22] This is a cross-sectional view passing through the suction device, approximately along the cutting line HH in Figure 18. [Figure 23] This is a cross-sectional view passing through the portion of the suction device corresponding to Figures 18-22, which is approximately along the cutting line II in Figure 20. [Figure 24] This figure shows a suction device according to the previous drawing, which has a carrying strap. [Figure 25] Figure 24 shows a detailed view of D3, where the carrying strap has been removed and a fastening device for the carrying strap is in place. [Figure 26] This diagram shows a suction device according to the previous drawing, with a container attachment in a perspective view, and the carrying strap, shown schematically, is attached to the container attachment. [Figure 27] This figure shows a detailed view of D4 from Figure 26, with the carrying strap fastening device shown in the released position. [Figure 28] This figure shows the characteristic curve of the volumetric flow rate passing through the suction turbine of a suction device. [Figure 29] This figure shows the motor characteristics of the drive motor for the suction turbine. [Modes for carrying out the invention]

[0062] The suction device 10 has a suction device housing 20 in which the suction turbine 11 of the suction device 10 is housed. A suction flow S can be generated by the suction turbine 11 and can flow into the suction device housing 20 through the suction port 12. A suction hose SL can be connected to the suction port 12.

[0063] The suction flow S flows through the dust collection chamber 21 of the suction device housing 20, where particles contained in the suction flow S, such as dust, can be collected. A filter element 13, such as a plate filter, is placed between the suction turbine 11 and the dust collection chamber 13, so that the particles contained in the suction flow S are retained in the dust collection chamber 21. The suction flow S flows downstream of the filter element 13 through the suction turbine 11 and flows out of the suction device housing 20 through the exhaust port 22.

[0064] The suction device 10 is a mobile (portable) electrical device that can be conveniently taken to its place of use. The suction device housing 20 is, for example, box-shaped and compact. The features and structure described below can, however, be easily used in fixed electrical devices as well.

[0065] The suction device 10 can be set on a surface or ground by its lower surface 14. The suction port 12 is located on the upper surface 15 of the suction device 10, opposite the lower surface 14. Between the lower surface 14 and the upper surface 15, the suction device 10 or its suction device housing 20 has elongated longitudinal sides 16 and 17, for example, the longitudinal side 16 forms the front side and the longitudinal side 17 forms the rear side of the suction device 10.

[0066] The suction device housing 20 has a dust collection chamber 21 and a suction turbine section 24 inside the housing 23, where the suction turbine 11 is housed.

[0067] The suction device housing 20 has a bottom wall 25 from which the circumferential walls, i.e., the front and rear longitudinal side walls 26 and 27 on the longitudinal sides 16 and 17, protrude, as do the longitudinal side walls 28 and 29 on the longitudinal sides 18 and 19, which extend between the longitudinal side walls 26 and 27 and together surround the interior 23 of the housing.

[0068] The intermediate wall 30 is positioned between the suction turbine section 24 and the dust collection chamber 21, dividing the inside of the housing 23 into the suction turbine section 24 and the dust collection chamber 21.

[0069] A through-flow opening 32 for the suction flow S is provided in the intermediate wall 30, through which the suction flow S can flow from the dust collection chamber 21 toward the suction turbine section 24. It has a suction turbine housing space 31 in which the suction turbine 11 is housed. The intermediate wall 30 can also be described as a partition separating the suction turbine section 24 from the dust collection chamber 21, apart from the through-flow opening 32 and other small outflow openings 98,108 described later.

[0070] The suction flow S flows out of the suction turbine housing space 31 through the exhaust port 22. The suction turbine section 24 and in particular the suction turbine housing space 31 are enclosed by a cover wall 34, while the dust collection chamber 21 is open on the opposite side of its bottom wall 25, for example, at the top in the operating position.

[0071] The exhaust port 22 is located, for example, on one of the peripheral walls of the suction device housing 20, for example, on the front longitudinal side wall 26, but the longitudinal side wall 27 or 28 may also have an exhaust port. In any case, it is advantageous that the exhaust port 22 is not located on the bottom wall 25 and / or the covering wall 34, and both are possible in principle.

[0072] The dust collection chamber 21 has a collection compartment 35 for a dust collection container 36. The dust collection container 36 is used to collect dust and dirt. A filter bag may also be placed in the dust collection container 36 or the dust collection chamber 21.

[0073] The dust collection container 36 is designed as a cassette or module that can be removed from the suction device housing 20, for example, in order to empty the dust from the dust collection container 36.

[0074] The dust collection container 36 has a bottom wall 37, side walls 38 and 39 protruding from the bottom wall, and a filter container 40 for the filter element 13, which define the internal space 43 of the dust collection container 36. The filter element 13 faces the side wall 39. The side wall 38 extends between the filter container 40 and the side wall 39. The side walls 38, 39 and the upper wall of the filter container 40 define a receiving opening 41 facing the bottom wall 37. Thus, the dust collection container 36 is open at the top.

[0075] A strap-type carrying handle 42 is hinged to the side wall 38 by a swivel bearing 42A, thereby allowing the dust collection container 36 to be gripped. When the carrying handle 42 is swung, it can be gripped by the operator. When the dust collection container 36 is inserted into the containment compartment 35, the carrying handle 42 can be swung toward the filter container 40, so that the carrying handle 42 does not protrude in front of the containment opening 41 or only protrudes slightly.

[0076] Advantageously, the support handle 42 is intended to be swung toward the filter container 40 in order to lock the dust collection container 36 within the containment compartment 35. At the same time, the filter element 13 is purposefully stretched (biased) toward the intermediate wall 30, so that a flow connection is established between the interior 43 of the dust collection container 36 and the flow opening 32 and thus the suction turbine 11 via the filter element 13.

[0077] The suction turbine section 24 and the dust collection chamber 21 form the lower housing portion 44 of the suction device housing 20. The lower housing portion 44 may be covered by a cover 45. When the suction device housing 20 is open or the cover 45 is in the open position OD, the housing compartment 35 is open for inserting the dust collection container 36 into or removing it from there.

[0078] The cover 45 has a cover body, for example, a cover wall 46, which has a suction turbine portion 47 and a closing portion 48. The suction turbine portion 47 is assigned to the suction turbine portion 24 and faces the cover wall 34 when the cover 45 is closed.

[0079] The closing portion 48 has a seal 49 which can close the interior 43 of the dust collection container 36. When the cover 45 is closed, the seal 49 rests, for example, on the end faces of the side walls 38 and 39, and on the side wall defining the filter container 40, and especially on the outer circumference of these side walls 38 and 39 and the filter container 40, so that the closing portion 48 tightly closes the dust collection container 36.

[0080] The cover 45 can be locked to the lower housing portion 44 in the closed position SD by the locking device 50.

[0081] The locking device 50 has a locking element 51 that is pivotably mounted on the cover 45. In the locked position, the locking element engages with a locking element 52 located on the lower housing portion 44 and can pivot to a released position where it disengages from the locking element 52. The locking element 51 is located on the longitudinal side wall 26 of the lower housing portion 44. The locking element 52 is configured, for example, as a locking projection. Corresponding to the front-facing arrangement of the locking element 52, the locking element 51 is located on the front side of the cover 45, which is assigned to the front longitudinal side 16 of the suction device 10.

[0082] The cover 45 is hinged to the lower housing portion 44 by a swivel bearing 53 and can pivot between an open position OD and a closed position SD. The swivel bearing 53 is located, for example, on the longitudinal side wall 27, particularly on its upper end or narrow side.

[0083] For example, a strap 53A, which may be present between the cover 45 and the lower housing portion 44 and is fixed to the wall surface of the covering wall 34 and the closing portion 48 opposite it, restricts the rotation of the cover 45 in the direction of its open position OD.

[0084] The legs 54, 55 are positioned on the lower surface 14 of the suction device housing 20. This allows the suction device housing 20 to be positioned on the surface, but can be further engaged with further suction device housings 20 of similar suction devices 10 by the housings 56, 57. The legs 54 and housings 56 are positioned near the rear longitudinal side wall 27. The housings 56 and legs 54 have rear gripping contours 56A, 54A, which can engage and disengage with each other in the stacking direction or across the stacking axis SR, and when engaged with each other, they connect suction device housings 20 stacked vertically along the stacking axis SR against tension. The rear gripping contours 56A, 54A form components of the coupling means 58. The coupling means 58 for coupling stacked containers or suction device housings 20 also have a locking element 59 positioned in the lower housing portion 44 in the form of a locking element 52, but near the bottom surface 25, not near the free end face of the longitudinal side wall 26. Furthermore, the locking elements 51 also form part of the coupling means 58. When the locking elements 51 of each lower container or suction device housing 20 engage with the locking elements 59 by the pivoted locking elements 51, the containers or suction device housings 20 are also coupled to each other in the front or front longitudinal region 16, thereby creating a connection that resists the tension of these suction device housings 20 on or in the stacking axis SR.

[0085] The suction port 12 can be closed by the closing element 60.

[0086] The closing element 60 has a closing body 61 that can be inserted into the suction port 12. Therefore, the closing body 61 is designed as a plug-in projection or a plug-in body.

[0087] The closing element 60 is movably mounted in the suction device housing 20 by a bearing 62 between a closed position V and an open position FS. The closing element 60 closes the suction port 12 in the closed position V and opens it in the open position FS. In the open position FS, the suction port 12 is open or particularly open for insertion of a suction hose SL.

[0088] The bearing 62 is, for example, a pivot bearing, thereby allowing the closing element 60 to pivot around the pivot axis SC. The pivot axis SC is, for example, perpendicular to the upper surface of the cover 44 or the upper surface of the suction device housing 20.

[0089] The bearing 62 has a bearing projection 63 on a closing element 60 that engages with a bearing housing 64 located on the upper side 15 of the cover 44. The bearing housing 64 is designed, for example, as a passage opening on the cover body or covering wall 46. The bearing projection 63 penetrates the passage opening. From the bearing projection 63, particularly in its free end region, there is a gripping contour 63A, such as a flange-shaped latch projection, that grips the lower surface of the cover 45 away from the upper side 15, thereby allowing the closing element 60 to be captured, but which is pivotably supported by the cover 45 or the suction device housing 20.

[0090] The closing body 61 and bearing projection 63 are located on the arm body 65 of the closing element 60. The arm body 65 extends along the longitudinal axis L60 between the bearing projection 63 and the closing body 61, which are located in the longitudinal end regions of the arm body 65 on opposite sides of the arm body 65.

[0091] The arm body 65 is preferably designed to be plate-shaped and / or in the form of a strap.

[0092] The cover 45 and therefore the suction device housing 20 have a closure element housing 67 for a closure element 60. The closure element housing 67 is designed as a recess in the upper side 45A of the cover 45. The upper side 66 of the closure element 60 on the side away from the upper side 45A of the cover 45 does not protrude in front of or beyond the upper side 45A of the cover 45. That case is optional, although not shown in the exemplary embodiment. Thus, the upper side 45A of the cover 45 is available for stacking another container or suction device housing 20 or the container attachment 200 described below without the closure element 60 representing an obstructive contour.

[0093] The closing element housing 67 is, for example, roughly triangular in a plan view, with the bearing 62 located in one corner region of this triangle, and the suction port 12 and supply housing (equipment housing) 68 located in the other corner region.

[0094] The supply storage section 68 is also designed as a plug-in storage section and has a peripheral wall 69 and a base 70.

[0095] The suction port 12 is designed as a plug-in housing with a peripheral wall 71 into which either the shape-restricting body 61 or the suction hose SL can be inserted.

[0096] The closing body 61 protrudes in front of the arm body 65 in the form of a closing projection (latch projection) and has a peripheral wall 72 and a bottom portion 73. The handle portion 74 protrudes from the bottom portion 70 into the internal space defined by the peripheral wall 72, forming a handle 74A for gripping the closing element 60.

[0097] The closing body 61, preferably the closing element 60 as a whole, is made of a flexible material that can be press-fitted or tightly fitted into the suction port 12 or the supply housing 68, while also being easy to handle. This will be explained below.

[0098] For example, the arm body 65 is flexible, so the closing body 61 can move away from the suction port 12 or the supply housing 68 while bending the arm body 65. Alternatively, or in addition, the closing element 60 may be movably or swivelly mounted in correspondence with the bearing 62 in order to not only swivel the closing element 60 back and forth around the pivot axis SC between the supply housing 68 and the suction port 12, but also to swivel it to engage or disengage it with the supply housing 68 and the suction port 12 in a transverse direction relative to the pivot axis SC. For example, the closing element 60 may be movably mounted within the bearing housing 65 around a pivot axis SQ extending transversely with respect to the pivot axis SC, so that the closing element 60 can move away from the upper side 45A and be disengaged from the suction port 12 or the supply housing 68. For this purpose, for example, the bearing projection 63 may have a diameter significantly smaller than that of the bearing housing 64, and therefore there may be transverse play with respect to the pivot axis SC in the bearing housing 64.

[0099] The handle portion 74 has a base wall 75 from which a side wall 76 protrudes. The base wall 75 and the side wall 76 form a substantially U-shaped or V-shaped cross-section. The side wall 76 extends between the base wall 75 and the bottom 73 of the closing body 61. The base wall 75 and the bottom 70 are, for example, parallel to each other. The side wall 76 faces the circumferential wall 72 of the closing body 61. The side wall 76 is advantageously long enough for the handle portion 74 to extend to the arm body 65. For example, the base wall 75 is substantially flush with the arm body 65 and / or the upper side 45A of the cover 45. This makes it easier to grip the handle portion 74.

[0100] The outer circumference of the peripheral wall 72 of the closing body 61 is provided with a seal 77, for example, in the form of a rib or sealing projection 77A, which abuts against the peripheral wall 71 or peripheral wall 72 in a seal fit or press fit when the closing body 61 engages with the supply housing 68 or the suction port 12. Thus, in either case, the closing body 61 is securely held in the supply housing 68 or the suction port 12. In particular, when the suction hose SL is not inserted, the seal 77 seals the suction port 12, thereby preventing dust and other debris from the dust collection container 36 or the dust collection chamber 21 from reaching the surrounding environment. Nevertheless, the operator can easily move the closing element 60 from the supply housing 68 to the suction port 12 or vice versa.

[0101] Insertion into the supply housing 68 or the suction port 12 is possible, for example, by applying pressure DV to the base wall 75 of the handle portion 74.

[0102] However, despite the press-fitting of the seal 77 into the peripheral wall 71 or 72, it is also easy to induce operation from the suction port 12 or the supply housing 68. That is, the handle portion 74 can be gripped by a clamping motion and pulled from the suction port 12 or the supply housing 68 in the opposite direction to the pressure operation DV.

[0103] For example, the side walls 76 are parallel to each other or inclined at a small angle to each other, as in the exemplary embodiment, so that when the operator grips the handle portion 74, he can grip the two side walls 76 in a clamping manner (clip-like), and move them toward each other, for example by a pressure load DO. As a result, the portion of the circumferential wall 72 and the seal 77 are moved away from the circumferential wall 71 or 72, so that the clamp fit of the closing body 61 to the supply housing 68 or intake port 12 is released or at least not tightened. In addition, it is advantageous that when the operator acts on the side walls 76, the side walls 76 flex under pressure load, forming a recessed grip, thus making operation easier. In this regard, it should be added that rib structures and other similar gripping structures may also be provided on the handle portion or the handle of the closing element to facilitate operation.

[0104] The suction device 10 may have or be compatible with a container attachment 200. The container attachment 200 preferably has the same contour around its outer circumference as the suction device housing 20. The container attachment 200 may be stacked on the suction device 10, i.e., its suction device housing 20, and connected to it using the coupling means 58 already described.

[0105] For example, the container attachment 200 has a suction device housing 220 with a bottom wall 225, from which longitudinal side walls 226, 227, 228 and 229 protrude, together defining the storage space 223 of the container attachment 200. The storage space 223 is suitable for housing the suction hose SL.

[0106] A handle 224 and a storage space 223 protrude from the bottom wall 225. The handle 224 is designed in a strap-like manner, so that the container attachment 200 attached to the suction device housing 20 functions as a carrying handle for carrying the stack 9 consisting of the suction device 10 and the container attachment 200. This forms the stack housing 20A of the suction device housing 20. The container attachment 200 forms the stack container 200A.

[0107] At the same time, the suction hose SL can be wrapped around the handle 224, so that it can function as a bandage aid.

[0108] A passage 222 for the suction hose SL is provided in the bottom wall 225, and when the container attachment 200 is attached to the suction device 10, it aligns with the suction port 12. Furthermore, a lateral opening 221 for the suction hose SL is provided in the longitudinal side wall 28.

[0109] The longitudinal side wall 226 is provided with locking elements 251 and 259 as coupling means 58, which are structurally identical and / or interchangeable with locking elements 51 and 59. Thus, for example, locking element 51 of the suction device 10 can engage with locking element 259, forming a stack 9 consisting of the suction device 10 and the container attachment 200 stacked on top.

[0110] Legs corresponding to legs 54 and 55 (not shown in the drawing) are provided on the side of the bottom wall 225 away from the storage space 223, and these legs can engage with the storage sections 56 and 57 of the suction device housing 20, so that in combination with the interlocking locking elements 51 and 259 of the coupling means 58, secure retention of the container attachment 200 to the suction device 10 can be performed in the direction of the stacking axis SR or in the stacking direction.

[0111] However, the coupling means 58 further rapidly creates a fixed connection between the container attachment 200 and the suction device housing 20 in the stacking axis SR and transverse direction.

[0112] Further containers, such as multiple containers for transporting tools, may be stacked on or below the stack 9. They may be coupled to the container attachment 200 or the suction device housing 20 using coupling means compatible with coupling means 58. For example, the container attachment 200 may also be positioned below the suction device housing 20 and connected to it by coupling means 58 to form a stack. Furthermore, other container attachments 200 not shown in the drawings or other suction devices 10 not shown may be stacked on top of the upper container attachment 200 in Figure 6, for example, and connected to it using coupling means compatible with coupling means 58 to form a stack.

[0113] In principle, the suction device 10 can be designed as a suction device that can be operated via a power supply network. However, the suction device 10 may be not only extremely compact, but also flexibly usable by having a power supply device 80 to which an energy storage device 170, such as a so-called battery pack, can be connected.

[0114] In the following, two energy storage devices 170 of the same type, also referred to as energy storage devices 170A and 170B, are provided for power supply.

[0115] The power supply device 80 has an energy storage device housing 81 in the region of the suction turbine section 24. The energy storage device housing 81 extends between the longitudinal side wall 28 and the intermediate wall 30, covering almost the entire distance between the longitudinal side wall 28 and the intermediate wall 30, so that two energy storage devices 170 can be arranged in the energy storage device housing 81.

[0116] The energy storage device housing 81 includes an insertion opening 82 through which the energy storage device 170 can be inserted into the energy storage device housing 81. The insertion opening 82 is defined by side walls 83 and 84, which extend adjacent to, and particularly parallel to, the side wall 28 and the intermediate wall 30 of the suction device housing 20. Between the side walls 83 and 84, there is a side wall or connecting wall 85 closer to the cover 45 and a side wall or thick wall 86 closer to or formed by the bottom wall 25. The energy storage device housing 81 is defined by a bottom wall 87 opposite the insertion opening 82.

[0117] From this point onward, device interfaces 90A and 90B, also uniformly referred to as interface 90, are arranged on the side walls 83 and 84, and energy storage devices 170 having energy storage device interfaces 190 that match interface 90 can be connected to them.

[0118] For example, interfaces 90,190 include complementary longitudinal guide contours 91,191 that can be inserted into each other along the insertion axis SA. For example, the longitudinal guide contours 91,191 include longitudinal grooves and longitudinal projections that can engage with each other.

[0119] The rear gripping contours 91A, 191A of interfaces 90, 191 extend transversely from their respective insertion shafts SA, thereby allowing the energy storage device 170 to be positively engaged (tightly engaged) with the device interface 90 transversely from their respective insertion shafts SA.

[0120] Interfaces 90 and 190 can be connected to each other by shape constraints based on the rear gripping contours 91A and 191A and the longitudinal guide contours 91 and 191, in addition to their sliding mobility along their respective insertion axes SA.

[0121] Furthermore, interfaces 90,190 include latching devices 92,192 for latching the energy storage device 170 to the device interface 90. The latching device 92 is designed, for example, as a latch housing 93 into which the latch projection 193 of the latching device 192 engages by locking (latching), thereby holding the energy storage device 170 immovably at interface 90 relative to the insertion shaft SA. The latch projections 193 are, for example, spring-loaded or elastic in the direction of their locked position, in which case the projections engage with the latch housing 93 and can be released from the latch housing 93 against the aforementioned spring load.

[0122] Interfaces 90,191 include terminal devices 94,194 for establishing an electrical connection between the energy storage device 170 and the suction device 10. The terminal devices 94,194 include energy supply terminals 95,195 having different polarities, e.g., positive potential and ground, and data terminals 96,196 for data transmission between the suction device 10 and the respective energy storage devices 170. Such data transmission is intended, for example, digital bus data transmission, particularly having an I2C bus.

[0123] The energy storage devices 170 are advantageously structurally identical. Each energy storage device 171 has an energy storage device housing 171, which has longitudinal side walls 172 on its longitudinal side 172A and end side walls 173, 174 extending between them. Extending between the side walls 172-174 is a bottom wall 175, and on the opposite side is an interface wall 176 on which the energy storage device interface 190 is located. The interface wall 176 may have a stepped shape, thereby separating the data terminals 196 from the bottom wall 175 at a greater distance than the power supply terminals 195.

[0124] Furthermore, the power supply terminal 195 and data terminal 196 are positioned front to back with respect to the insertion axis SA. For example, the data terminal 196 is positioned towards the front along the insertion axis SA in the insertion direction, i.e., closer to the end wall 173, while the power supply terminal 195 is positioned towards the rear along the insertion axis SA in the insertion direction, i.e., closer to the end side wall 174. The energy storage device housing 171 has an internal space 177 in which the battery 178 is located, protected from environmental influences. However, the battery 178 becomes hot, for example, during discharge or charging, i.e., when the suction device 10 is operated using the energy storage device 170. However, the battery 178 within the energy storage device 170 is actively cooled, and for that purpose each energy storage device 170 has a fan 179. The fan 179 generates a cooling airflow KL, which flows into the internal space 177 through the energy storage device inlet opening 180 and out therethrough through the energy storage device outlet opening 181. For example, the energy storage device inlet opening 180 is located in the bottom wall 175, while the energy storage device outlet opening 181 is located in the interface wall 176. In addition, the energy storage device inlet opening 180 and the energy storage device outlet opening 181 are located in the longitudinal end regions on opposite sides of the energy storage device 170, i.e., near the end walls 174 and 173, so that the cooling air flow KL, for example, the cooling air flow KLA in the case of energy storage device 170, and the cooling air flow KLB in the case of energy storage device 170B, flows through each energy storage device 170, so to speak, from back to front with respect to the insertion direction or insertion axis SA.

[0125] The device interface 90 is located on opposite sides of the energy storage device housing 81, i.e., on the side walls 83 and 84. Thus, the energy storage device 170 is housed within the energy storage device housing 81 by opposing bottom walls 175.

[0126] Multiple operating elements 197 are installed on the longitudinal side wall 172 of the energy storage device housing 171 to operate the latching device 192. Thus, an operator can grip the energy storage device housing 171 from the side and / or clamp (like a clip) and act simultaneously on two operating elements 197 located on the longitudinal side wall 172, so to speak, on opposite sides, to disengage the latch projection 193 from the latch housing 93, thereby allowing each energy storage device 170 to be removed from the device interface 90.

[0127] The housing section 81 enables convenient operation because there are operating spaces 88 and 89 between the connecting walls 85, 86 and the energy storage device 170 inserted into the energy storage device housing section 81, where the operator can grasp, for example, an operating element 197 having a pressure surface or a contact surface. The operating spaces 88 and 89 are, so to speak, uniform or continuous control spaces because there are no separating components between the energy storage device 170 housed in the energy storage device housing section 81. For example, if the energy storage devices 170 are housed in an energy storage device housing section 81 having energy storage device interfaces 190 facing each other, then there must be an intermediate wall in the energy storage device housing section 81 where the device interfaces 90 are located.

[0128] In addition, due to the excellent design of the operating spaces 88 and 89, the operator can grasp the energy storage devices 170, for example, by their longitudinal side walls 172, and remove them from the energy storage device housing 81. However, this also makes the operation of inserting the energy storage devices 170 into the energy storage device housing 81 easier, because in this case too the operator can grasp the longitudinal side walls 172 to insert each energy storage device 170 into the device interface 90 assigned to it.

[0129] The side walls 83 and 84 are advantageously spaced apart from each other, so that the energy storage device 170 connected to the device interface 90 has space between its bottom walls 175, so that the cooling air flow KL can flow into the space between the bottom walls 175.

[0130] Outlet openings 97 and 98 located near the device interface 90 and therefore near the energy storage device outlet opening 181 of the energy storage device 170, and positioned on the side walls 83 and 84 of the energy storage device housing 81, are used to discharge the cooling air flow KL of the energy storage device 170 located at the device interface 90. Outlet openings 97 and 98 will hereafter be referred to as housing outlet openings due to their position in the energy storage device housing 81, and are positioned near the bottom wall 87 so that little or no heat accumulates in the energy storage device housing 81.

[0131] The containment outlet opening 98 communicates directly with the intermediate space between the intermediate wall 30 and the filter element 13, and a cooling air duct 99 is formed between the intermediate wall 30 and the filter element 13, leading from the containment outlet opening 98 to a ventilation opening 32 in the intermediate wall 30. Thus, the cooling air flow KLA of the energy storage device 170 located on the side wall 84 can flow from the containment outlet opening 98 and be drawn in by the suction turbine 11 via the cooling air duct 99. In this case, the suction turbine 11 can also enhance the cooling air flow KLA, schematically shown by the arrows.

[0132] The energy storage device 170B can be cooled by a cooling air flow KLB that can flow from the energy storage device housing 81 through the outlet opening 97. The housing outlet opening 97 forms a duct inlet opening 97A for the cooling air duct 100.

[0133] For example, it is easy to connect the outlet opening 97 of the containment section to the ventilation opening 32 in the intermediate wall 30 or at least to the suction turbine inlet opening 11A of the suction turbine 11 using a hose connection line or the like, thereby allowing the cooling air flow KLB to flow directly to the suction turbine 11 or be drawn in by it.

[0134] However, in this case a different structure is chosen, where the cooling air duct 100 does not go directly to the ventilation opening 32, but rather to another cooling air duct 101 used to cool other components of the suction device 10, for example, to cool the energizing device 140 and for the permanent cooling of the suction turbine 11.

[0135] The suction turbine 11 is, for example, a so-called aeration turbine or a turbine that is cooled or can be cooled by the suction flow carried by it.

[0136] Such continuous cooling of the suction turbine 11 is particularly important when it would otherwise be unable to draw in enough air on the inlet side. Such situations include, for example, when the suction port 12 is clogged or blocked, when the filter element 13 is no longer clear, or when the dust collection chamber 21 is overfilled.

[0137] The suction turbine 11 is a so-called vent turbine. The suction turbine 11 has a suction turbine inlet opening 11A on the side facing the vent opening 32, and at least one, preferably a plurality of, suction turbine outlet openings 11B on the side away from the vent opening 32.

[0138] It is advantageous that the seal 11E is provided between the intermediate wall 30 on one side and the end face of the suction turbine 11, which has a suction turbine inlet opening 11A facing the intermediate wall 30 on the other side, so that it tightly abuts the intermediate wall 30 and the suction flow S can pass through the ventilation opening 32 but does not flow into the suction turbine housing space 31 in which the suction turbine 11 is located.

[0139] The suction turbine housing space 31 is defined by a side wall 31A in the region of the suction turbine outlet opening 11B. An elastically flexible suction turbine bearing element 11F is advantageously positioned between the side wall 31A and the end face of the suction turbine 11, where or adjacent to the suction turbine outlet opening 11B is located, so that this suction turbine bearing element 11F and seal 11E hold the suction turbine 11 in a vibration-damping manner within the suction device housing 20.

[0140] The suction turbine 11 includes a fan 11C, schematically shown, and an electric drive motor 11D for driving the fan 11C. The electric drive motor 11D is cooled by the suction flow S during normal operation of the suction device 10, i.e., when the suction flow S is flowing.

[0141] The suction device 10 has an energizing device 140 for supplying energy to the suction turbine 11, particularly to the drive motor 11D. The energizing device 140 includes, for example, one or more power electronics semiconductor elements 141, such as thyristors, FOSFETs, etc. The semiconductor elements 141 become hot during operation, i.e., when the suction turbine 11 is supplied with current.

[0142] The power supply device 140 is located on a printed circuit board 104, which is sandwiched between the longitudinal side walls 28 and 83 of the energy storage device housing 81 of the power supply device 80. The printed circuit board 104 also partially extends into the intermediate space between the side walls 28 and side wall 31A. The power supply device 140 is connected to the device interfaces 90A and 90B, in particular to the energy supply terminal 95, via a plurality of wires 143. The plurality of wires 144 connect the power supply device 140 to the suction turbine 11.

[0143] Furthermore, the suction device 10 advantageously includes a controller 150. The controller 150 includes, for example, a processor 151 and a memory 152, which are equipped with at least one control program 153 for controlling the suction turbine 11.

[0144] The operator can control the suction device 10 using a number of operating elements 155 located on the control panel 156. The control panel 156 is located on the side wall 28.

[0145] The controller 150 is electrically connected to the operating element 155. Using the operating element 155, the suction device 10 can be switched on or off, for example. Furthermore, the power of the suction turbine 11 can be adjusted using the operating element 155. Advantageously, a display 157 is provided on the control panel 156 to display, for example, the status of the suction device 11.

[0146] The controller 150 also generates heat, and its dissipation is advantageously achieved by the suction device 11, as will become clear below.

[0147] The cooling air duct 101 is fluidly connected to the containment outlet opening 97. Air can therefore flow into the cooling air duct 101 through the containment outlet opening 97 (e.g., cooling air flow KLB). However, the cooling air flow KLB is already hot for cooling the energy storage device 170B.

[0148] Ambient air, i.e., generally cold air, can flow into the cooling air duct 101 through the duct inlet opening 102 as a cooling air flow KLC. The duct inlet opening 102 is located, for example, near the bottom wall 25 in the region of the longitudinal side wall 28 facing the bottom wall 25. A protective grate 102A is advantageously located at the duct inlet opening 102.

[0149] The cooling airflow KLC flows through the duct inlet opening 102 into duct section 103A of the cooling air duct 101, which extends between the printed circuit board 142 and the side wall 31A. Thus, the cooling airflow KLC either flows behind the printed circuit board 142 or flows past the printed circuit board 142. In this case, duct section 103A is selected so that the cooling airflow KLC essentially flows near the energizing device 140, i.e., near the semiconductor elements 141 which become particularly hot during the operation of the suction device 11. However, this heating, and in the worst case overheating, is effectively neutralized by the cooling airflow KLC.

[0150] At its end away from the duct inlet opening 102, the duct section 103A leads to (converges with) a hose housing 104, which houses a hose 110 and therefore a tubular body 110A for guiding the cooling air.

[0151] The hose housing section 104 has, for example, a insertion housing section 105 into which the hose 110 is inserted, and an air guide surface 106 on the wall 107.

[0152] The cooling air flow KLC flowing out from duct section 103A is guided to the inlet opening 111 of hose 110 via the air guide surface 106. Because there is a distance between the inlet opening 111 and the air guide surface 106 or wall 107, the cooling air flow KLC can flow into the inlet opening 111 without obstruction.

[0153] The design and / or cross-section of the insertion housing 105 ensure that the hose 110 is compressed only to the extent that it is securely held in the insertion housing 105, but not to the extent that its flow cross-section is no longer sufficient for the cooling air flow KLC to pass through. The insertion stopper 105A is advantageously positioned opposite the insertion housing 105 so that when it is inserted into the insertion housing 105, the sheathing of the cooling air hose can come into contact with it. The insertion stopper 105A is at a distance from the air guide surface 106. The inlet opening 111 is not closed by the air guide surface 106 because of the insertion stopper 105A.

[0154] The cooling air flow KLB may flow alongside the circuit board 142 and / or into the gap between the circuit board 142 and the covering wall 34, and further into the inlet opening 111 of the cooling air hose 110, so that the cooling air hose 110 directs both the cooling air flow KLB and the cooling air flow KLC toward the duct outlet opening 108. The cooling air hose 110 thus provides a common duct section 103B for the cooling air flows KLB and KLC.

[0155] The cooling air hose 110 has a hose section 112 that guides the cooling air flow KLC and / or cooling air flow KLB through the suction turbine housing space 31 to the duct outlet opening 108. The duct outlet opening 108 is located in the intermediate wall 30 and leads to the space between the intermediate wall 30 and the filter element 13. Thereafter, the cooling air flow KLC and / or cooling air flow KLB can flow toward the vent opening 32 and be drawn in by the suction turbine 11.

[0156] The hose section 112 has an arched course. The end region 113 of the hose section 112 is held in the region of the duct outlet opening 108 in a housing 109 designed, for example, as a plug-in housing.

[0157] The cooling air flows KLA and KLB primarily cool the energy storage units 170A and 170B, but also cool the suction turbine 11.

[0158] Furthermore, the cooling airflow KLC cools the energizing device 140, but it also cools the suction turbine 11.

[0159] Since a smaller flow of cooling air is required to cool the energy storage devices 170A and 170B, cooling air ducts 99 and 100 advantageously have a smaller flow cross-section than cooling air duct 101. That is, cooling air duct 101 cools power electronics, such as semiconductor elements 141. This means that sufficient cooling air flow flows through cooling air duct 101 and not, so to speak, flow through cooling air ducts 99 and / or 100 alongside it.

[0160] The duct inlet openings 97A, 98A, and 102 are permanently open. The cooling air flows KLA, KLB, and KLC can therefore permanently contribute to the cooling of the suction turbine 11.

[0161] Furthermore, a sensor 154 is located on the suction turbine 11, and its sensor signal is evaluated by the controller 150. The sensor 154 includes, for example, a temperature sensor and / or a pressure sensor and / or a flow sensor. Due to the continuous cooling of the suction turbine 11 using cooling air flows KLA, KLB and KLC, even when the suction flow S is blocked or not flowing, the sensor 154 has sufficient flow pressure, so that it can transmit a valid temperature signal to the controller 150.

[0162] Finally, the controller 150 is designed to monitor the volumetric flow rate of the suction flow S using, for example, at least one control program 153.

[0163] For example, a suction flow S has a volumetric flow rate VS with a pressure-dependent profile that depends on the pressure P. The characteristic curve VK of the volumetric flow rate of the suction flow S is schematically shown in Figure 28. For example, at pressures P1, P2 and P3, which are negative or underpressure, the volumetric flow rate VS has values ​​VS1, VS2 and VS3 [l / s].

[0164] For example, the suction flow S does not fall below a minimum velocity of, say, 20 m / s, thereby maintaining the so-called dust class, and according to the dust class, the suction device 10 always ensures appropriate suction for this dust class.

[0165] Depending on the diameter of the suction hose SL, the minimum required velocity of the suction flow S will produce the minimum value VSmin for the volumetric flow rate of the suction flow S. For example, this is approximately 10 [l / s] for a hose diameter of 27 mm for the suction hose SL.

[0166] Due to the continuous airflow provided by the cooling air flows KLA, KLB and KLC, the controller 150 can, in particular, calculate the characteristic curve VK of the volumetric flow rate of the suction flow S and other motor characteristics of the drive motor 11D of the suction turbine 11, which are not shown in the drawings, based on the motor characteristics MK1 and MK2, since both the characteristic curve VK and the motor characteristics MK1 and MK2 have substantially constant, and in particular substantially linear, profiles in the relevant regions for monitoring the volumetric flow rate or the flow velocity of the suction flow S.

[0167] Motor characteristics MK1 and MK2 depend on the voltages U1 and U2 when the drive motor 11D is operated. Motor characteristics MK1 and MK2 are proportional to the current profile of the motor current Imot. The drive motor 11D is energized by the energizing device 140 by this motor current.

[0168] The controller 150, in particular the controller program 153, controls the power supply device 140 and then receives feedback, for example, the current motor voltage, for example, motor voltages U1 and U2, and the respective motor currents Imot to supply energy to the drive motor 11D.

[0169] If motor characteristic MK1 or motor current Imot falls below the value l1min, or if motor characteristic MK2 or motor current Imot falls below the value l2min (which correspond to the minimum value VSmin for the volumetric flow rate of the suction flow S, respectively), the controller 150 recognizes that the flow velocity of the suction flow S is too low and, for example, provides a warning to the display 157. In this case, the controller 150 may, instead or in addition, output an audible alarm to a speaker or other acoustic output means 158.

[0170] Advantageously, the carrying strap 350 is suitable for conveniently transporting the suction device 10 or the stack 9 consisting of the suction device 10 and the container attachment 200, or just the container attachment 200. The carrying strap 350 can be ergonomically adapted to each carrying situation using the length adjustment device 351.

[0171] The carrying strap 350 can be secured to the suction device 10 or the container attachment 200. For this purpose, the carrying strap 350 has a securing device 340 at each of its longitudinal end regions.

[0172] The fixing device 340 can be engaged with the fixing housing portion 300 of the suction device 10 or, if necessary, with the fixing housing portion 320 of the container attachment 200.

[0173] The fixing device 340 has a base body 341 designed in the shape of a plate. The base body 341 has rear gripping contours 342 on its longitudinal sides. These rear gripping contours 342 cooperate with the rear gripping contours 302 of the fixed housing 300 to function as longitudinal guides, and along these longitudinal guides the fixing device 340 can be inserted into each fixed housing 300 along the insertion shaft S300.

[0174] With respect to the insertion shaft S300, the base body 341 has a separate rear gripping contour 343 in the insertion direction, and its front portion 343A abuts against the stopper 303 of the fixed housing portion 300 at the end of the insertion movement along the insertion shaft S300.

[0175] Next, the bolt 304 of the fixed housing 300, which is operable using the working surface or working contour 305, can reach its locked position, in which case it reaches behind and / or above the rear gripping contour 344 of the fixing device 340.

[0176] The bolt 304 is, for example, spring-loaded in its locked position and can be actuated toward its released position by a release action BE against the spring load from the operating surface 305. The bolt 304 then disengages from the rear gripping contour 344, thereby allowing the fixing device 300 to move outward from the fixing housing 300, which is designed as an insertion housing.

[0177] The rear gripping contours 343 and 344 extend between the rear gripping contours 342. The rear gripping contours 343 and 344 are located in the opposing longitudinal end regions of the base body 341.

[0178] The fixed housing section 320 is also designed as a plug-in housing section. The fixing device 340 can be inserted into each fixed housing section 320 along the plug-in shaft S320, or it can be moved outward from the fixed housing section 320 along the plug-in shaft S320.

[0179] With respect to the fixed housing section 320, the rear gripping contours 343 and 344 of the fixing device 340 act as longitudinal guide contours, and the longitudinal guide contours can engage with the longitudinal guide contour or rear gripping contour 322 of the fixed housing section 320, guiding the fixing device 340 along the insertion shaft S320.

[0180] One of the rear gripping contours 342 of the fixing device 340, which is located on the front side in the insertion direction with respect to the insertion shaft S320, abuts against a stopper 323 located at the bottom or end of the fixing housing 320 with respect to the insertion shaft S320. A gripping contour for accommodating this gripping contour 342 may optionally be provided therein. In this case, the bolt 346 of the fixing device 340 can engage with the locking contour 324 of the locking element 325 of the fixing housing 320, thereby locking the fixing device 340 into the fixing housing 320.

[0181] The bolt 346 is designed as an elastic tongue or elastic element relative to the base body 341 and has an actuation surface 345, which allows it to disengage from the locking contour 324 of the fixed housing 320. It is indicated in the drawing by an arrow or actuation BE2.

[0182] The fastening device 340 has a plurality of strap accommodating sections 347 for the carrying strap 350. The carrying strap 350 can be pressed, for example, through the push-through openings 348 of the strap accommodating section 347 and held in place by frictional engagement with the strap accommodating section 347 by appropriate sling measures.

[0183] The fixed storage section 320 of the container attachment 200 is located on the longitudinal side walls 228 and 229 so that the carrying strap 340 can engage with the fixed storage section 320 that fills the storage space 223 of the container attachment 200. Thus, the stack 9 can be suspended from the carrying strap 350, so to speak, and transported comfortably.

[0184] On the other hand, the fixed housing 300 allows the suction device 10 to be carried like a shoulder bag. For example, the fixed housing 300 is located on one of the longitudinal side walls 26, 27, 28, or 29, specifically on longitudinal side wall 26 in the exemplary embodiment. In any case, it is advantageous that the fixed housing 300 is located on the narrow side of the suction device housing 20.

[0185] It is advantageous if the fixed storage section 300 is located in the longitudinal end region of the longitudinal side wall 26, that is, near the longitudinal side walls 28 and 29, so that the carrying strap 350 can function as a strap or carrying handle suitable for carrying over the shoulder in the central portion of the longitudinal side wall 26. [Explanation of symbols]

[0186] 10 suction devices, 9 stacks, 60 closure elements 11. Suction turbine FS release position 12 Suction port 12 Suction hose SL V Closed position 13 Filter element 61 Enclosure body 14 Lower side 62 Bearing Swivel shaft SC 15 Upper side 63 Bearing projection 16 Front longitudinal side - Front side 63A Rear gripping contour 17 Rear longitudinal side 64 Bearing housing 18 Longitudinal side with operating elements 65 Arm body (65) 19 Long side of the dust collection room 66 Top 20 Suction device housing 67 Closure element housing 20A Stackable Housing 68 Supply Storage Section 21 Dust collection room 69 68 surrounding wall 22 Exhaust port 70 68 base 23 Housing interior 71 12 surrounding walls 24 Suction turbine section 72 61 peripheral wall 25 Bottom wall 73 61 bottom 26 Front long side wall 74 Handle section Grip handle 74A 27 Rear longitudinal side wall 75 Base wall 28 Longitudinal side wall with control element 76 Side wall 29 Longitudinal side wall of dust collection chamber 77 Seal 74A Seal projection 30 Intermediate wall 31 Suction turbine housing space 31A Sidewall 80 Power Supply 81 Energy storage device housing 82 Insertion opening 32 Ventilation opening 83 Side wall for 28 Side wall for 84 30 34 Covering wall 85 Connecting wall Top 35 Containment Section 86 Connecting Wall Below 36 Dust collection container 87 Bottom wall 37 Bottom wall 88 Operating space above 38 (Multiple) side walls 89 Operating space below 39 Side wall 90 Device interface 40 Filter container 91 Longitudinal guide contour SA Insertion Shaft 41 Receiving opening, upper part 91A, rear gripping contour 42 Carrying handle, swivel bearing 42A, 92 Latch device 43 36 Interior 93 Latch housing 44 Lower part of housing 94 Terminal device 45 Cover 45A Upper SD and OD 95 Energy supply terminals 46 Cover wall / body cover 96 Data terminals 47 Suction turbine section 97 Outlet opening of the housing section of 83 (outside) Duct inlet opening for 97A 100 48 Closed section 98 84 Containment section outflow opening inside Duct inlet opening for 98A 99 Cooling air duct for 84 through 49 seal 99 30 Cooling air duct for 50 locking device 100 83 51 Locking element / rotating bolt 101 Cooling air duct labyrinth 52 Locking element / projection 102 Duct inlet opening 53 Swivel bearing for cover 54 Rear leg of housing 20 102A Protective grille 55 Front leg portion of housing 20 103A Duct portion Rear 105 56 Rear leg housing section 103B Common duct section 57 Front leg housing section 104 Hose housing section 58 Connecting means 105 Hose insertion housing SR Stackable Axis 106 Air Guide Surface 59 Locking element Bottom = 52 107 Wall 108 32 duct outlet opening 109 Containment Unit 110 Cooling air hose 110A Tubular Body 111 Entrance opening 112 Hose section, curved (bent) 113 End area 140 Energizing device 141 Semiconductor devices 142 Printed Circuit Boards 143 (Multiple) Wiring Wiring (multiple) to 144 11 S suction flow 150 controllers 151 processors 11A Suction turbine inlet opening 152 Memory (storage device) 11B Suction turbine outlet opening 153 Control program 11C Fan 154 11 Sensor / Pressure Sensor 11D Drive motor 155 Operating elements (control elements) 11E Seal 156 Control Panel 11F Suction Turbine Bearing Element 157 Display 158 Output means: Speaker 200 Container Attachments 200A Stackable Containers 220 Housing 170 Energy Storage Device 221 Side opening (side passage) for SL 171 Energy storage device housing 222 Suction passage SL 172 Long side 223 Storage space 172A Long side 224 Handle 173 End side wall Front insertion direction 225 Bottom wall 174 End side wall Rear insertion direction 226 Front longitudinal side wall 175 Bottom wall 227 Rear longitudinal side wall 176 Interface wall 228 Left long side wall 177 Interior space 229 Right long side wall 178 Battery 251 Locking element / rotating bolt 179 Fan (179) Cooling airflow (KLA, KLB, KLC) KL 259 Locking element Bottom = 52 180 Energy storage device inlet opening 181 Energy storage device outlet opening 300 Fixed storage section 302 Post-grasping contour Vertical 190 Energy storage device interface - (190A, 190B) 303 Rear gripping contour, bottom 191 Longitudinal guide contour 304 Bolt 191A Rear gripping contour 305 Operating surface 192 Latching device 193 Latch projection 320 Fixed housing section 194 Terminal device 322 Rear gripping contour 195 Energy supply terminal 323 Rear grip contour Bottom 196 Data terminal 324 Lock contour 197 192 operation element (control element) 325 rock elements 340 Fixation device 341 Base Body 342 Post-grasping contour, vertical 343 Rear grip contour Front view 344 Rear grip contour Back side 345 Working surface 346 volts 347 Strap storage compartment 348 Push-through opening 350 Carrying Strap 351 Length adjustment device

Claims

1. An electrical device having a housing (20) in which at least one electrical load is arranged, In an electrical device, for supplying power to the aforementioned electrical load, the power supply device (80) has an energy storage device housing (81), and inside the power supply device (80) there are at least two device interfaces (90A, 90B) for detachably connecting the energy storage device interfaces (190A, 190B) of electrical energy storage devices (170A, 170B), respectively, An electrical device characterized in that the device interfaces (90A, 90B) are arranged on opposing side walls (83, 84) of the energy storage device housing (81), so that the energy storage devices (170A, 170B) can be arranged on the device interfaces (90A, 90B) while their bottom walls (175) face each other.

2. The electrical device according to claim 1, characterized in that the energy storage device housing section (81) has an insertion opening (82) through which the energy storage devices (170A, 170B) can be inserted into the energy storage device housing section (81), and the insertion opening (82) faces the bottom of the energy storage device housing section (81).

3. The electrical device according to claim 1, characterized in that the energy storage device housing (81) is configured as a pocket or compartment in the outer wall of the housing (20).

4. The electrical device according to any one of claims 1 to 3, characterized in that when the energy storage devices (170A, 170B) are housed in the energy storage device housing (81), the energy storage devices (170A, 170B) do not protrude in front of the energy storage device housing (81) and / or in front of the outer contour of the housing (20), or protrude by a maximum of 10% of the length of the storage devices.

5. The device interfaces (90A, 90B) have a longitudinal guide contour (91) for guiding engagement with the longitudinal guide contour (191) of the energy storage device interfaces (190A, 190B) along the insertion shaft (SA), and / or The electrical device according to any one of claims 1 to 3, characterized in that the device interface (90A, 90B) has a latch device (92) for tightening the latch device (192) of the energy storage device interface (190A, 190B).

6. The electrical device according to any one of claims 1 to 3, characterized in that the energy storage device housing section (81) has connecting walls (85, 86) extending between the opposing side walls (83, 84) and defining an internal space for housing the energy storage devices (170A, 170B).

7. The electrical device according to claim 6, characterized in that, between at least one connecting wall (85, 86) and the energy storage device (170A, 170B) facing it, an operating space (88, 89) for gripping the energy storage device (170A, 170B) is provided when the energy storage device (170A, 170B) is housed in the energy storage device housing (81), the operating space (88, 89) has a width of at least 1.5 cm, and / or the operating space (88, 89) extends continuously between the side walls (83, 84) of the energy storage device housing (81).

8. The electrical device according to claim 6, characterized in that there is an operating space (88, 89) between each connecting wall (85, 86) and the energy storage devices (170A, 170B) facing it, and when the energy storage devices (170A, 170B) are housed in the energy storage device housing section (81) via the operating space (88, 89), the energy storage devices (170A, 170B) can be gripped in a clamp-like manner by their longitudinal sides (172A) that are opposite each other.

9. The energy storage devices (170A, 170B) have an operating element (197) on at least one longitudinal side (172A) that engages with the energy storage device housing (81) when the energy storage devices (170A, 170B) are housed in the energy storage device housing (81), The electrical device according to claim 6, characterized in that the energy storage devices (170A, 170B) can be detached from the device interfaces (90A, 90B) within the energy storage device housing (81) by operating the operating element (197).

10. The operating element (197) is operable by its engagement with the operating space (88, 89) of the energy storage device housing (81) between the connecting wall (85, 86) and the energy storage device (170A, 170B), and / or The electrical device according to claim 9, characterized in that the energy storage devices (170A, 170B) each have one operating element (197) on their opposite longitudinal sides (172A).

11. The electrical device according to any one of claims 1 to 3, characterized in that the electrical device includes or has at least two of the energy storage devices (170A, 170B) and / or forms part of a system including the electrical device and at least two energy storage devices (170A, 170B).

12. The aforementioned housing (20) forms a suction device housing (20), and a suction turbine (11) for generating a suction flow (S) is arranged in its internal space (23). The suction device housing (20) has an inlet (12) for passing the suction flow (S) and a dust collection chamber (21) for collecting dust contained in the suction flow (S). The electrical apparatus according to any one of claims 1 to 3, characterized in that a filter element (13) for retaining dust in the dust collection chamber (21) is disposed between the dust collection chamber (21) and the suction turbine inlet opening (11A) of the suction turbine (11).

13. The electrical device according to any one of claims 1 to 3, characterized in that the housing (20) is configured as a stacking housing (20A) designed to form a housing stack (9) extending in the direction of the stacking axis (SR), and at least one stacking container (200A) can be stacked below it and / or at least one stacking container (200A) can be stacked on top of it.

14. The electrical device has coupling means (58) for coupling its housing to a stacking container (200A) that is stacked on or below it along the stacking axis (SR), The coupling means (58) of the electrical device is configured to interact with the coupling means (58) of the stacking container (200A), thereby the housing (20) is securely connected to the stacking container (200A) by the coupling means (58) in a transverse direction with respect to the stacking axis (SR) and parallel to the stacking axis (SR), and / or The electrical device has a container attachment (200) which can be stacked along the stacking axis (SR) as a stacking container (200A) on or below the housing (20), The container attachment (200) and the housing (20) have coupling means (58) for securely coupling the housing (20) to the container attachment (200) parallel to the stacking axis (SR) and transversely, and The electrical device according to claim 13, characterized in that the container attachment (200) has a space for housing at least one component of the electrical device.

15. The electrical device according to any one of claims 1 to 3, characterized in that the electrical device is a mobile electrical device.

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