Suction device with at least one compartment for a battery

Abstract

The invention relates to a suction device, comprising a device body (12), a fan device (72) for generating a suction flow, a battery device (120) with at least one battery unit (122, 124) for providing electric energy, and at least one receiving area (126, 128) for a battery unit, said receiving area being arranged on the device body (12), comprising at least the following: a control panel (112) which is arranged on a lateral face (48) of the device body (12) and a suction connection (106) which is arranged on a lateral face (48) of the device body (12), wherein at least one of the following is provided: the at least one receiving area (126, 128) is arranged on the device body (12) relative to the lateral face (48) such that the battery unit (122, 124) which is paired with the at least one receiving area (126, 128) can be brought from the lateral face (48) into the at least one receiving area (126, 128); and the at least one receiving area (126, 128) is arranged on the device body (12) relative to the lateral face (48) such that a charge state display (160) can be read by a user from the lateral face (48), said charge state display (160) being arranged on the battery unit (122, 124) or on the at least one receiving area (126, 128).

Description

[0001] The invention relates to a suction device comprising a device body, a blower device for generating a suction flow, a battery device with at least one battery unit for providing electrical energy, at least one receptacle for a battery unit which is arranged on the device body, and with at least one of the following: a control panel which is located on a transverse side of the device body, a suction port which is located on a transverse side of the device body.

[0002] WO 2018 / 162057 A1 discloses a battery-operated vacuum cleaner comprising a container for the material to be vacuumed, a suction head arranged on the container, a blower device for generating a suction flow and at least one process air channel which is fluidly connected to the blower device, wherein a battery holder for a battery device is positioned on the suction head between the at least one process air channel and / or between at least one cooling air channel of the blower device and a top surface of the suction head.

[0003] DE 10 2016 112 420 A1 discloses a backpack-type dust collector, comprising a housing containing a motor and a dust collection unit that collects dust when the motor is driven, a battery holder that is provided on the housing in such a way that the battery holder can hold a sliding-mount power tool battery, and shoulder straps that are placed over both of the user's shoulders to carry the housing on the user's back.

[0004] DE 20 2007 008 998 U1 discloses a suction nozzle for a vacuum cleaner.

[0005] US patent 6,448,732 B1 discloses a vacuum cleaner that is powered by electrical energy, provided either by a battery or via an AC power connection.

[0006] WO 2012 / 107595 A1 discloses a vacuum cleaner comprising a suction inlet, a dirt collection container, a filter assembly, a suction line, a suction unit, wherein the dirt collection container is in flow communication with the suction unit via the filter assembly and the suction line, and the filter assembly is pressurized by the suction unit, and an external air valve assembly, wherein the filter assembly can be supplied with external air on its clean side via the external air valve assembly, and the external air valve assembly can be moved from a closed valve position to an open valve position and back again from the open valve position to a closed valve position for cleaning the filter assembly. A battery assembly is provided for supplying power to the external air valve assembly.

[0007] WO 2012 / 107103 A1 discloses a method for cleaning a vacuum cleaner filter.

[0008] WO 2015 / 139751 A1 also discloses a method for cleaning a filter of a stick suction device.

[0009] EP 3 162 267 A1 reveals a vacuum cleaner.

[0010] The CN 209996199 U, the JP 2018 186931 A, the CN 107198495 A, the CN 206293491 U, the CN 206285056 U and the CN 106175601 A also reveal suction cups.

[0011] WO 2014 / 119160 A1 discloses a vacuum cleaner with a battery device.

[0012] WO 00 / 36969 A1 reveals a vacuum cleaner with a battery pack.

[0013] US patent 2005 / 0155177 A1 discloses a vacuum cleaner in which a battery pack is arranged adjacent to the underside of a tank.

[0014] The JP 1-209038 reveals a vacuum cleaner.

[0015] The EM 006934220-0001 reveals a cordless vacuum cleaner.

[0016] The invention is based on the objective of providing a suction device of the type mentioned above which can be operated in a simple manner.

[0017] This problem is solved in the suction device mentioned at the outset according to the invention by providing at least one of the following: The at least one receptacle is arranged on the device body with respect to the transverse side in such a way that the battery unit associated with the at least one receptacle can be inserted into the at least one receptacle from the transverse side; the at least one receptacle is arranged on the device body with respect to the transverse side in such a way that a charge status indicator can be read by an operator from the transverse side, wherein the charge status indicator is arranged on the battery unit or on the at least one receptacle.

[0018] The device is easy to operate. From this position, the operator can insert or remove a battery unit from the device body while facing the side (e.g., kneeling or standing). The operator also has access to the control panel and the suction port. If a suction hose is attached to the suction port, the operator has access to, for example, a suction nozzle on the hose.

[0019] An operator can then also pull the suction device towards him via the suction hose and will then be in front of the transverse side.

[0020] Alternatively or additionally, the operator has the charge level indicator in their field of vision on the side panel. They can then see the charge level of the corresponding battery unit.

[0021] For these processes or activities, the operator does not need to reposition themselves in relation to the vacuum cleaner.

[0022] Furthermore, an electrical contact device can be positioned on the device body in a structurally simple and protected manner, particularly when it is arranged in a chamber. In the solution according to the invention, the chamber opening is open towards the transverse side, and the ingress of dirt and liquid is more difficult compared to the case where fluid can directly reach the electrical contact device from above (relative to the direction of gravity).

[0023] It is advantageous if at least one of the following is provided: A battery unit can be detachably positioned in one insertion direction on the associated at least one receptacle and can be removed from the at least one receptacle in a direction opposite to the insertion direction; the at least one receptacle includes a fixing device for the associated battery unit; an electrical contact device is associated with the at least one receptacle; the at least one receptacle includes a guide track for the associated battery unit; a battery unit, which is a counterweight for an electrically active battery unit and corresponds in weight to the electrically active battery unit, can be received by the at least one receptacle; the control panel and the suction port are arranged on the same transverse side.

[0024] This allows for easy insertion and removal of a (rechargeable) battery unit from the device body. The battery unit can be secured and, in effect, locked to the device body. In this secured position, electrical contact with the electrical contact device is also established.

[0025] By providing a guide track, the associated battery unit can be easily positioned at or removed from the corresponding receptacle.

[0026] If a mounting can also accommodate a counterweight, then a high level of stability for the suction device can be achieved, even if only one electrically active battery unit is used.

[0027] Placing the control panel and the suction connection on the same side simplifies operation.

[0028] It is advantageous if at least one opening is accessible from the transverse side and / or from a longitudinal side to which the transverse side is oriented. This allows for easy insertion and removal of a battery unit from the transverse side. It also provides a view of the charge level indicator from the transverse side. An open longitudinal side, for example, allows for effective cooling of the battery unit and prevents heat buildup.

[0029] In a structurally advantageous embodiment, the at least one receiving chamber comprises a chamber which is closed except for an insertion opening. This allows for the provision of a dust-tight, sealable receiving space.

[0030] In one embodiment, a movable cover for the insertion opening is arranged on the chamber. This cover allows the insertion opening to be closed. It is specifically designed that the cover opens automatically when a battery unit is inserted.

[0031] It is advantageous if at least one of the following is provided: A battery unit arranged at the at least one mounting point does not project beyond the transverse side; a battery unit positioned at the at least one mounting point is flush with the transverse side or is positioned recessed relative to the transverse side on the device body; a battery unit positioned at the at least one mounting point does not project beyond a longitudinal side of the device body, the longitudinal side being oriented transversely to the transverse side; a battery unit positioned at the at least one mounting point is flush with a longitudinal side of the device body or is recessed relative to the longitudinal side, the longitudinal side being oriented transversely to the transverse side.

[0032] The battery unit(s), properly positioned on the device body, are flush with or recessed from the outer edges of the device body. This eliminates any protruding parts. It prevents the operator from snagging on a battery unit or the vacuum cleaner from colliding with an object via the battery unit.

[0033] In an advantageous embodiment, the device body has a recess or space associated with the at least one receptacle, wherein the space or recess is open towards the transverse side, and wherein the at least one receptacle adjoins the associated space or recess, wherein, in particular, the at least one receptacle adjoins the space or recess in a direction transverse to the transverse side and, especially, in an insertion direction for the battery unit. The recess or space makes it easy to position the battery unit flush with or recessed against an outer contour of the device body. The recess or space extends downwards from an outer envelope of the device body.This also allows a properly positioned battery unit in its designated slot to be partially recessed or placed in the space without protruding beyond the outer casing of the device body. This facilitates easy insertion and removal of a battery unit from its designated slot.

[0034] It is particularly advantageous if at least one of the following is provided: The free space or recess is located in front of the at least one associated receptacle; the free space or recess is bounded downwards by a base, and in particular by a flat base on the device body; the free space or recess is bounded on a first side by a central block of the device body; the free space or recess is open on a second side, which lies on a longitudinal side of the device body, the longitudinal side being oriented transversely to the transverse side; a battery unit, which is positioned at the at least one receptacle, is positioned with at least a partial area in the free space or recess; a battery unit is provided with a handle, wherein, when the battery unit is positioned at the at least one receptacle, the handle is positioned in the free space or recess and is, in particular, accessible to an operator via the free space or recess;The gripping device is arranged on a longitudinal side or top of the battery unit, which, when the battery unit is positioned at least one receptacle, is oriented transversely to the transverse side of the device body and, in particular, points outwards; a gripping device is arranged on a first longitudinal side and on an opposite second longitudinal side of the battery unit, and, in particular, the battery unit is designed to be mirror-symmetrical with respect to its external shape.

[0035] If the battery unit is at least partially positioned within the space or recess, it can be easily grasped by an operator. This is further facilitated if a gripping device is appropriately positioned on the battery unit. A battery unit can then be easily pulled out of or inserted into its designated receptacle.

[0036] If the battery unit has a grip on each of its opposite long sides, then the corresponding (mirror-)symmetrical design allows it to be inserted into different slots on the device body. Even if slots are located on opposite sides of the device body, one type of battery unit is sufficient.

[0037] In a structurally advantageous embodiment, at least one first receptacle and one second receptacle, and in particular exactly one first receptacle and exactly one second receptacle, are provided. This allows (at least) two electrically active battery units to be arranged on the device body. This results in a correspondingly long operating time.

[0038] It is advantageous if at least one of the following is provided: The first and second mountings are arranged symmetrically, and in particular mirror-symmetrically, about a geometric median plane of the device body, or are arranged on the median plane of the device body, the median plane being oriented transversely to the transverse side; the device body has a vertical axis which is oriented perpendicular to a base plane of the suction device, and the first and second mountings are arranged on the device body at the same height with respect to the vertical axis; the first and second mountings are spaced apart in a transverse direction to a geometric median plane of the device body; the blower assembly is arranged on the device body at least with a partial area between the first and second mountings; a control device is arranged on the device body between the first and second mountings.

[0039] This results in a symmetrical design. In particular, the center of mass of a battery system with multiple battery units can be positioned on the geometric median plane. The center of mass of the vacuum cleaner can thus be "positioned" on the geometric median plane. This results in high stability for the vacuum cleaner. The vacuum cleaner can also be easily lifted, etc.

[0040] A compact design is achieved when the control panel is positioned between the first and second recording points on the device body.

[0041] For the same reason, it is advantageous if the suction port is located between the first and second inlets on the device body. This allows the suction device to be designed compactly with relatively small external dimensions.

[0042] In one embodiment, the first receptacle and the second receptacle are arranged on a suction head of the device body, in particular with at least one of the following: The control panel is located on the suction head; the suction connection is located on the suction head or on a container for the material being suctioned.

[0043] It is possible to design a suction device with compact dimensions and high stability.

[0044] In a structurally advantageous embodiment, a central block is arranged on the device body, on which the control panel is positioned, and a mounting bracket is arranged on both sides of the central block on the device body. This results in a compact design. A high degree of symmetry can be achieved, so that, in particular, the suction unit with the battery assembly attached to it exhibits high stability.

[0045] It is advantageous if at least one of the following is provided: The suction port is located on the central block; the central block has an outer surface that forms part of the transverse side; the central block includes a web that is positioned above the receptacles relative to a vertical axis of the device body; the central block is I-shaped or T-shaped; the central block is located on a suction head of the device body; a control device is arranged on the central block; the central block is mirror-symmetrical to a geometric median plane of the device body; a movable cover for a receiving chamber of the device body, in which a filter cleaning device for a filter assembly and / or the filter assembly are arranged, is supported on the central block; a carrying handle is arranged on the movable cover; the at least one receptacle extends into an area below the cover;The at least one mounting point is positioned at least partially to the side of the blower unit on the device body.

[0046] This results in optimized space utilization on the device body and especially on the suction head. Consequently, the vacuum cleaner can be designed to be compact. This also results in high stability.

[0047] It may be provided that at least one mounting point is arranged between the suction port and the control panel, relative to a vertical axis of the device body. This eliminates the need for significant modifications to the suction head, for example, to position a battery unit.

[0048] It is specifically provided that the control panel is arranged on a suction head of the device body and the suction connection is arranged on the suction container of the device body. The at least one receptacle is then arranged on the suction container, or is arranged on the suction container, or is arranged on an additional part (an intermediate ring) which is located between the suction head and the suction container.

[0049] Accordingly, in one embodiment, the at least one receptacle is arranged on an intermediate ring, which is arranged between the suction container and the suction head, in particular with at least one of the following: The intermediate ring is detachable from the suction container; the intermediate ring is detachable from the suction head; a receiving chamber is arranged on the intermediate ring, on which a plurality of receiving units are located, wherein in particular the receiving chamber is designed to receive a plurality of battery units.

[0050] The intermediate ring is essentially a component for positioning a battery pack on the vacuum cleaner. A large number of battery units can be positioned on the intermediate ring. While it's possible to position one battery unit, it can also accommodate three or more.

[0051] It is advantageous if a filter cleaning device and / or the filter itself are arranged on a geometric mid-plane of the device body, located between a first and a second inlet. This minimizes the tipping moment and results in high stability for the vacuum cleaner. The filter cleaning device allows for effective cleaning of the filter. This also results in easy operation for the user, as the vacuum cleaner incorporates the means for filter cleaning.

[0052] It is advantageous if the suction device has a standing plane, and the device body has a vertical axis which is oriented perpendicular to the standing plane, wherein at least one receptacle is assigned an insertion direction for a corresponding battery unit, with at least one of the following: The at least one receptacle is arranged such that the insertion direction is oriented transversely to the vertical axis; the at least one receptacle is arranged such that the insertion direction is parallel to or at an acute angle to the base plane; the insertion direction is oriented transversely to the transverse side; the insertion direction is oriented transversely and, in particular, perpendicularly to a wheel axis of a wheel assembly, wherein the wheel assembly is arranged on the device body; the insertion direction is oriented parallel to a geometric median plane of the device body; the insertion direction is parallel to or at an acute angle to an insertion direction of a suction hose into the suction port.

[0053] This results in easy operation. In particular, a battery unit can be inserted into or removed from the device body from the side.

[0054] The insertion direction is preferably perpendicular to the vertical axis or parallel to the base plane.

[0055] In an advantageous alternative embodiment, the insertion direction is at an acute angle to the base plane, in the range of 30° to 60°, and particularly in the range of 40° to 50°. In a specific embodiment, this angle is approximately 45°. When inserting a battery unit into the corresponding receptacle, this minimizes the force component parallel to the base plane. A force component parallel to the base plane can cause the suction device to shift on a surface, which is undesirable.

[0056] It is particularly advantageous if the at least one receptacle has an insertion direction for a battery unit that lies at an acute angle to a displacement direction of the suction device on a surface. This minimizes the force component when inserting a battery unit into the at least one receptacle in the insertion direction, which is parallel to the displacement direction. This force component, parallel to the displacement direction, can cause the suction device to shift on a surface and is generally undesirable.

[0057] In particular, the acute angle lies in the range between 30° and 60°, and preferably in the range between 40° and 50°. In a specific embodiment, it is approximately 45°.

[0058] In an advantageous embodiment, the device body is supported on the ground via a wheel assembly with a wheel axle, and the direction of movement is oriented perpendicular to the wheel axle. This also results in high stability, while allowing the suction device to be moved along the ground.

[0059] It is advantageous if the transverse side with the control panel and / or with the suction connection is a first transverse side and the device body has a second transverse side which is spaced apart from the first transverse side, and a wheel device is arranged on the device body with at least one of the following: The wheel assembly is positioned closer to the second transverse side than to the first transverse side of the device body; a wheel of the wheel assembly is arranged in front of a longitudinal side of the device body, the longitudinal side being located between the first transverse side and the second transverse side; a connecting line between a receptacle and a wheel, wherein the receptacle and the wheel are associated with a longitudinal side, lies at an acute angle to a vertical axis of the device body.

[0060] This results in the vacuum unit being maneuverable. The vacuum unit exhibits high stability. It also exhibits high resistance to tipping, both parallel to and perpendicular to the wheel axle.

[0061] A compact design of the suction device and, in particular, of the suction head, results if at least one of the following is provided: A bottom surface of the at least one mounting point lies at the same height as the suction port or below the suction port, relative to a vertical axis of the device body; a top surface of the at least one mounting point lies at the same height as the control panel or above the control panel, relative to a vertical axis of the device body.

[0062] This allows at least one intake to be integrated in a space-saving manner, especially into a suction head.

[0063] It is advantageous if the contour line between the first and second inlet, between the second inlet and the suction port, and between the suction port and the first inlet is a straight line or a triangle, and in particular an equilateral triangle. This results in a compact design of the suction device.

[0064] For the same reason, it is advantageous if the contour of a line between the first recording and the second recording, a line between the second recording and the control panel, and a line between the control panel and the first recording is a straight line or a triangle, and in particular an equilateral triangle.

[0065] The following description of preferred embodiments of the invention, in conjunction with the drawings, serves to explain the invention in more detail. The drawings show: Figure 1 is a perspective view of a first embodiment of a suction device; Figure 2 is a front view of the suction device according to Figure 1 in direction A as a view of a transverse side; Figure 3 a sectional view of the suction device according to Figure 1 in a plane which is in Figure 1 indicated by B; Figure 4 is a sectional view of the suction device according to Figure 1 along line 4-4 according to Figure 3Figure 5 shows a sectional view of the suction device according to Figure 1 along line 5-5 according to Figure 3 Figure 6 shows a perspective view of a second embodiment of a suction device according to the invention with closed lids at a respective mounting; Figure 7 shows a sectional view of the suction device according to the invention. Figure 6 Figure 8 shows the same view as Figure 7 , during the insertion of a battery unit into an associated receptacle; Figure 9 a sectional view similar to Figure 7 when inserting the battery unit according to Figure 8 Figure 10 shows a perspective view of a third embodiment of a suction device according to the invention, comprising a first receptacle and a second receptacle, wherein a battery unit is inserted in the first receptacle and a cover is closed in the second receptacle; Figure 11 shows a partial sectional side view of the suction device according to Figure 10 Figure 12 shows the same view as Figure 11during the insertion of a battery unit; Figure 13 a perspective view of a fourth embodiment of a suction device according to the invention; Figure 14 a sectional view of a fifth embodiment of a suction device according to the invention; Figure 15 a sectional view of the suction device according to Figure 14 along line 15-15; and Figure 16 a perspective view of a sixth embodiment of a suction device.

[0066] A first embodiment of a suction device according to the invention, which is located in the Figures 1 to 5 The one shown and labelled 10 is a stand-alone vacuum cleaner.

[0067] The suction device 10 comprises a device body 12. The device body 12 in turn has a suction container 14 and a suction head 16, which is detachably attached to the suction container 14.

[0068] The suction container 14 has a base 18 to which a circumferential wall 20 is attached. An interior space 22 is formed between the base 18 and the wall 20, which serves to hold the suctioned material. The suctioned material can be collected directly into the interior space 22, or a filter bag can be positioned in the interior space 22 to collect the suctioned material.

[0069] A drive mechanism, designated as a whole by 24, is arranged on the device body 12.

[0070] A frame 26 is provided for this purpose, on which the drive mechanism 24 is mounted. This frame 26 has a receptacle 28 in which the device body 12 with the suction container 14 is detachably positioned. It is also possible, in principle, for the device body 12 with the suction container 14 to be placed directly on a base 29.

[0071] The drive mechanism 24 includes a wheel assembly 30, which is mounted on the frame 26. The wheel assembly 30 is a rear wheel assembly. It comprises a right (rear) wheel 32 and a left (rear) wheel 34. The right wheel 32 and the left wheel 34 are rotatable about a common wheel axle 36. When the suction device 10 is correctly positioned on a flat surface 29, this wheel axle 36 is parallel to this surface 29.

[0072] The device body 12 has a first longitudinal side 38 and a second longitudinal side 40 opposite it. The wheel axle 36 is oriented transversely to both the first longitudinal side 38 and the second longitudinal side 40.

[0073] The right wheel 32 is located in front of the first longitudinal side 38 and the left wheel 34 is located in front of the second longitudinal side 40. In particular, the right wheel 32 and the left wheel 34 are located laterally in front of the wall 20 of the suction container 14 when the latter is inserted into the frame 26.

[0074] The driving device 24 further comprises a roller device 42. In the illustrated embodiment, the roller device 42 has a first steering roller 44 and a second steering roller 46.

[0075] The first swivel caster 44 and the second swivel caster 46 are arranged on the frame 26 such that they are positioned below the suction container 14 when the latter is attached to the frame 26.

[0076] The device body 12 has a first transverse side 48 and, spaced apart from and opposite this, a second transverse side 50. The first transverse side 48 and the second transverse side 50 are each arranged transversely to the first longitudinal side 38 and the second longitudinal side 40, respectively.

[0077] The roller assembly 42 is located in a front area of ​​the device body 12 when the device body 12 is positioned on the frame 26; the roller assembly 42 is closer to the first transverse side 48 than to the second transverse side 50.

[0078] The wheel assembly 30 is positioned at a rear area of ​​the device body 12. It is closer to the second transverse side 50 than to the first transverse side 48.

[0079] In one embodiment, a receptacle 52 is arranged on the frame 26, to which a suction nozzle or the like can be fixed.

[0080] The suction container 14 is barrel-shaped with respect to its wall 20 and base 18. It is, for example, cylindrical or cuboid (especially with rounded edges).

[0081] The suction head 16 of the device body 12 can, for example, be detachably fixed to the suction container 14 via a locking flap device 54.

[0082] When the suction head 16 is removed from the collection container 14, access to the interior 22 is possible from the top of the collection container 14, which faces away from the base 18. Collection material can then be emptied from the interior 22, or a filter bag can be removed from the interior 22.

[0083] The suction head 16 forms a lid for the suction container 14.

[0084] The suction unit 10 has a standing platform 56 via the transport device 24. The standing platform 56 is defined by the wheels 32 and the swivel casters 44, 46. The suction unit 10 is supported on the base 29 by these when set up.

[0085] If the base 29 is a plane, then the standing plane 56 coincides with this plane.

[0086] In an alternative embodiment, the suction container 14 is provided to be stably placed on the base 29 via its base 18. The corresponding standing surface is then formed by an underside of this base 18.

[0087] The device body 12 has a height axis of 58 (compare, for example, Figures 2 and 3 This vertical axis 58 is oriented transversely and, in particular, perpendicularly to the base plane 56. The vertical axis 58 is oriented transversely and, in particular, perpendicularly to the wheel axis 36.

[0088] The suction head 16 comprises a suction head body 60. This suction head body 60 is designed as a housing. It has a first suction head transverse side 62 and a second suction head transverse side 64 opposite it.

[0089] Between the first suction head transverse side 62 and the second suction head transverse side 64, a first suction head longitudinal side 66 and a second suction head longitudinal side 68 extend.

[0090] The first transverse side 62 of the suction head, together with the corresponding area of ​​the wall 20 of the suction head 16, forms the first transverse side 48 of the device body 12. The second transverse side 64 of the suction head, together with the corresponding area of ​​the wall 20, forms the second transverse side 50 of the device body 12. The first longitudinal side 66 of the suction head, together with the corresponding area of ​​the wall 20, forms the first longitudinal side 38 of the device body 12. The second longitudinal side 68 of the suction head, together with the corresponding area of ​​the wall 20, forms the second longitudinal side 40 of the device body 12.

[0091] A blower assembly 72 is arranged on the suction head 16 in a corresponding receiving chamber 70 of the suction head body. The blower assembly 72 comprises (at least) one impeller 74. This impeller 74 is rotatably mounted about a pivot axis 76. This pivot axis 76 is transverse and, in particular, perpendicular to the wheel axis 36. The pivot axis 76 is oriented parallel to or at a small acute angle (in particular, less than 30°) to the vertical axis 58.

[0092] It is also possible in principle that the axis of rotation 76 in a "lying" arranged wheel 74 is oriented transversely and in particular approximately perpendicular to the height axis 58 (not shown in the drawings).

[0093] The blower assembly 72 further comprises a blower motor 78. The blower motor 78 is an electric motor. It includes a shaft 80 on which the impeller 74 is fixedly mounted. An axis of rotation of this shaft 80 coincides with the axis of rotation 76 of the impeller 74.

[0094] The blower unit 72 generates a suction flow.

[0095] The suction device 10 has a filter assembly 82. The filter assembly 82 is held on a filter holder 84. The filter assembly 82 includes, for example, a flat pleated filter or a candle filter.

[0096] In the illustrated embodiment, the filter holder 84 and thus the filter device 82 are located on the suction head 16; when the suction head 16 is removed from the suction container 14, the filter device 82 is also removed.

[0097] It is also possible that the filter assembly 82 is held on the suction container 14. Accordingly, in this embodiment, the filter holder is then located on the suction container 14 (not shown in the drawings).

[0098] A further receiving chamber 86 is formed in the suction head body 60. A filter cleaning device 88 is arranged in the receiving chamber 86. The filter cleaning device 88 is positioned relative to the filter device 82 such that the filter device 82 can be cleaned.

[0099] During operation of the vacuum cleaner 10, dust accumulates on the filter assembly 82. This increases the flow resistance for the airflow through the filter assembly 82. The filter cleaning device 88 cleans the filter assembly 82 by mechanically acting upon it.

[0100] Filter cleaning can be triggered manually or automatically. For example, demand-based filter cleaning is performed by the filter cleaning unit 88. This is initiated automatically when measurements indicate a need for cleaning.

[0101] An example of a process for cleaning a filter that meets requirements is described in WO 2015 / 139751 A1, to which explicit and full reference is made.

[0102] In one embodiment, the filter cleaning device 88 is designed as an external air valve device 90. This external air valve device allows the filter device 82 to be supplied with external air in order to loosen adhering solid particles and thereby, in effect, blow them off.

[0103] An external air valve 92 is arranged in the receiving chamber 86 of the suction head 16. It comprises a valve holder fixed in the suction head 16, which forms a valve seat for a movable valve body in the form of a valve disc. The valve disc is subjected to a closing force towards the valve holder by means of a closing spring. The closing spring is clamped between a plate-like filter holder, which has a plurality of flow passages and is fixed in the suction head 16, and the valve disc. In addition to the closing spring, the filter holder carries a resilient stop element in the form of a stop spring. This stop spring has, in particular (preferably like the closing spring), a linear characteristic curve. It is, for example, designed as a helical spring. Unlike the closing spring, the stop spring is not under preload in the closed position of the valve disc.Only when the valve disc lifts off the valve seat of the valve holder does the stop spring on the underside of the valve disc come into contact with it and is compressed slightly with further movement of the valve disc. This exerts an increasing restoring force on the valve disc and accelerates its movement from a closed valve position through an open valve position and back to the closed valve position. In the open valve position, the valve disc is spaced apart from the valve holder, which forms the valve seat. The valve holder has numerous through-holes, the openings of which are sealed by the valve disc when it assumes its closed valve position. The suction head 16 has a lateral opening at the level of the valve holder. Ambient air can flow into the through-hole in the valve holder through this lateral opening.When the valve plate assumes its open valve position, spaced apart from the valve holder, the lateral opening is in flow communication with a suction line via the through-hole in the valve holder, and external air can enter a clean side 94 of the filter unit 82. The clean side 94 faces away from the suction container 14.

[0104] When the valve plate assumes its closed valve position, the flow connection between the side opening and the suction line is interrupted.

[0105] In a central area, the valve holder carries an electromagnet. Circumferentially, the electromagnet is surrounded by an annular space into which a guide sleeve, integrally formed on the upper side of the valve disc, extends. The guide sleeve accommodates a magnetizable element, for example, an iron plate, which, in the closed position of the valve disc, rests against a free end face of the electromagnet and, in combination with the electromagnet, forms a closed magnetic circuit.

[0106] An (electronic) control device 96 is arranged in the suction head 16.

[0107] The electromagnet is electrically connected to the control unit 96 via a power supply line. During normal operation of the vacuum unit 10, the control unit 96 supplies the electromagnet with a power current. The resulting magnetic field reliably holds the valve disc in its closed position. The holding force of the electromagnet is assisted by the spring force of the closing spring.

[0108] If the power supply to the electromagnet is interrupted by the control device 96, the magnetic holding force acting on the valve disc ceases, and the valve disc is lifted from the valve seat against the action of the closing spring due to the pressure difference acting on it, which results from the external pressure of the ambient air present in the area of ​​the valve holder and the internal pressure within the suction line. Ambient air can then suddenly flow through the through-hole in the valve holder into the suction line, and the filter assembly 82 is suddenly exposed to ambient air on its clean side 94. This leads to a mechanical vibration of the filter assembly 82. In addition, the filter assembly 82 is subjected to an ambient air flow in the counterflow direction, that is, against the flow direction 98 prevailing during normal suction operation.This results in effective cleaning of the filter unit 82 by the filter cleaning unit 88.

[0109] Regarding the exemplary design of a filter cleaning device 88 and, in particular, an external air valve device 90, reference is made to WO 2015 / 139751 A1, WO 2012 / 107103 A1, WO 2012 / 107595 A1, or to the unpublished international application PCT / EP2020 / 066794 of June 17, 2020. These documents are expressly incorporated herein by reference.

[0110] The filter unit 82 has a dirty side 100, which faces into the interior 22 of the suction container 14. It faces away from the clean side 94, which faces the filter cleaning unit 88.

[0111] In one embodiment, the filter cleaning device 88 and also the filter device 82 are positioned on the device body 12 closer to the second transverse side 50 than to the first transverse side 48.

[0112] The blower unit 72 is positioned closer to the first transverse side 48 than to the second transverse side 50 on the suction head 16 (compare Figure 3 ), or lies midway between the first transverse side 48 and the second transverse side 50.

[0113] The device body 12 has a top surface 102. This top surface 102 is located on the suction head 16.

[0114] A movable cover 104 is arranged on the upper surface 102. This movable cover 104 closes the receiving chamber 86 at the top. The cover 104 can be removed (for example, as a whole, or by means of a hinge or the like) to allow access to the filter cleaning device 88. If necessary, the filter device 82 can also be replaced with the cover 104 open.

[0115] The suction device 10 has a suction port 106. A suction hose or suction pipe can be connected to the suction port 106. The suction port 106 is located on the device body 12.

[0116] In the illustrated embodiment 10, the suction port 106 is arranged on the suction head 16. A pipe 108 leads from the suction port 106 (compare Figure 3 The air passes through the suction head 16 to the interior 22 of the suction container 14. A nozzle 110 is connected to the pipe 108 and projects into the interior 22 when the suction head 16 is mounted on the suction container 14. A suction flow can be supplied via the nozzle 110 to draw in the material via the suction pipe or hose connected to the suction port 106.

[0117] The nozzle 110 can also be designed as a holder for a filter bag.

[0118] The suction port 106 is arranged on the first transverse side 48 of the device body 12. In the illustrated embodiment 10, it is arranged on the first transverse side 62 of the suction head.

[0119] In principle, it is also possible that the suction connection is located on the suction container 14.

[0120] A control panel 112 is arranged on the suction head 16. The control panel 112 comprises one or more operating elements for a user of the suction device 10.

[0121] In the illustrated embodiment 10, a rotary knob 114 is provided as the operating element. The suction device 10 can be activated or deactivated for suction operation via this rotary knob 114. If necessary, a suction strength can be set.

[0122] In one embodiment, this rotary knob 114 can also be used to set whether automatic filter cleaning should be carried out by the filter cleaning device 88.

[0123] The control panel 112 may also include additional or alternative elements, such as a separate on / off switch, or a switch to activate automatic filter cleaning, or a switch to (instantaneously) activate filter cleaning.

[0124] The operating panel 112, with its effective components, is in electrical or signal-effective connection with the control unit 96.

[0125] The control panel 112 is located on the device body 12 on the suction head 16 and on the first transverse side 48; the control panel 112 is arranged on the first transverse side 62 of the suction head.

[0126] In the illustrated embodiment, the control panel 112 and the suction port 106 are located in close proximity. The control panel 112 is positioned above the suction port 106 with respect to the vertical axis 58 (in a direction away from the bottom 18 of the suction container 14).

[0127] In particular, the control panel 112 and the suction connection 106 are arranged on a central plane 116 of the device body 12 (compare Figure 1 and 2 ).

[0128] The suction port 106 and the control panel 112 are aligned with each other on the central plane 116.

[0129] The median plane 116 is a geometric median plane of the device body 12. It lies midway between the first longitudinal side 38 and the second longitudinal side 40. It is oriented transversely to the first transverse side 48 and to the second transverse side 50.

[0130] The geometric median plane 116 of the device body 12 is oriented perpendicular to the wheel axis 36.

[0131] The axis of rotation 76 lies on the central plane 116 or is parallel to it.

[0132] In particular, the altitude axis 58 lies in the middle plane 116.

[0133] The device body 12 and in particular the suction device 10 are designed approximately symmetrically to the central plane 116.

[0134] In particular, the driving device 24 is designed to be mirror-symmetrical to the central plane 116.

[0135] In particular, a center of the filter cleaning device 88 with the external air valve 92 is located on the middle level 116.

[0136] The center of the filter cleaning device 88 is a center of mass of the filter cleaning device 88, and / or is a geometric center. In particular, the center of the filter cleaning device 88 is located at the external air valve 92. It is provided that the center of mass of the filter cleaning device 88 lies at least approximately on the central plane 116. At least approximately means that the center of mass of the filter cleaning device 88 lies exactly on the central plane 116 or at a small distance from it, where this small distance is at most 10 cm and in particular at most 5 cm, in order not to generate a relevant tilting moment.

[0137] In one embodiment, the center of the blower assembly 72 is located on the median plane 116. The center of the blower assembly 72 is a center of mass of the blower assembly 72, and / or is a geometric center of the blower assembly 72.

[0138] A center of mass 118 ( Figures 2 , 3 ) of the suction device 10 and in particular of the device body 12 lies on the central plane 116 or at a small distance from it (where this small distance is at most 10 cm and in particular at most 5 cm).

[0139] A battery system 120 is provided to supply the electrical energy necessary for operating the vacuum cleaner 10, and in particular for supplying the electrical energy required for the blower motor 78, the control unit 96, and the filter cleaning unit 88. The battery system 120 comprises at least one rechargeable battery unit. In the illustrated embodiment, a first battery unit 122 and a second battery unit 124 are provided, each of which is a rechargeable battery (an accumulator).

[0140] It is also possible, as explained in more detail below, for a battery unit to be battery-free and to include a counterweight for an electrically active battery unit, where this counterweight corresponds to the weight of an electrically active battery. The battery unit with counterweight has the same external dimensions as an electrically active battery unit in order to fit into a suitable housing.

[0141] A receptacle is provided for each battery unit 122. In the embodiment shown, a first receptacle 126 is provided for the first battery unit 122 and a second receptacle 128 is provided for the second battery unit 124.

[0142] The first recording 126 and the second recording 128 are arranged on the device body 12 and on the suction head 16.

[0143] Each battery unit 122, 124 can be detached and inserted into a respective recording 126, 128.

[0144] Each of the first recording 126 and the second recording 128 is assigned an electrical contact device 130 (compare Figure 5 ), which is fixedly arranged on the suction head body 60. The electrical contact device 130 is in electrical connection with the control device 96.

[0145] When a battery unit 122 or 124 is correctly ("electrically effective") inserted and fixed to the associated receptacle 126 or 128, an electrical contact is established with the electrical contact device 130, so that the corresponding battery unit 122 or 124 can provide the necessary electrical energy to operate the suction device 10.

[0146] The suction head body 60 comprises a central block 132. This central block 132 is arranged on the first transverse side 48. It is located centrally between the first longitudinal side 38 and the second longitudinal side 40. It lies on the median plane 116.

[0147] The suction port 106 and the control panel 112 are located on the central block 132.

[0148] In one embodiment, the control device 96 is positioned on or in the central block 132.

[0149] The central block 132 has an I-shape (compare Figure 10 ), or in the embodiment according to Figure 1 a T-shape.

[0150] The receptacles 126 and 128 are arranged laterally to the central block 132 on the suction head 16. The central block 132 separates the first receptacle 126 from the second receptacle 128.

[0151] In the T-shaped design of the central block 132 in the suction device 10, it includes a bridge 134 which projects over the first receptacle 126 and the second receptacle 128.

[0152] The control panel 112 with the rotary knob 114 is at least partially located on the jetty 134.

[0153] When the lid 104 is closed (compare Figure 1 ), it is supported in particular by the central block 132 and by the bridge 134.

[0154] In one embodiment, the central block 132 is inclined at an acute angle to the wall 20 on the first transverse side 48. A corresponding angle 136 (compare Figure 3 ) to the wall 20 is, for example, in the range of approximately 25°.

[0155] The first recording 126 and the second recording 128 each comprise a guide track 138 for the corresponding battery unit 122 and 124, respectively.

[0156] The suction head 16 has a recess or cutout 140 for both the first inlet 126 and the second inlet 128. This recess or cutout is bounded by a base 142. The base 142 is opposite the web 134. The cutout or recess 140 lies between the base 142 and the web 134 and extends in one direction towards the second transverse side 50.

[0157] The guide track 138 is positioned on floor 142.

[0158] The guide track 138 is adapted to a corresponding counter-guide of the first battery unit 122 or the second battery unit 124.

[0159] A fixing device is assigned, which is designed, for example, as a snap-fit ​​connection. When a battery unit 122 or 124 has reached its end position on the corresponding receptacle 126 or 128 in the guide track 138 (at which point contact with the electrical contact device 130 occurs and thus electrically effective positioning takes place), this end position is held, for example, by a releasable snap-fit ​​connection.

[0160] In one embodiment, the cutout or recess 140 is at least approximately (hollow) cuboid in shape.

[0161] The cutout or recess 140 is bounded in the direction of the second transverse side 50 by a wall 144. The wall 144 is, in particular, a boundary wall of the receiving chamber 86 in which the filter device 82 is located.

[0162] The cutout or recess 140 is perpendicular to the wall 144 through another wall 146 ( Figures 4 , 5 ) limited. This wall 146 is spaced away from the median plane 116. It lies parallel to the median plane 116 or at a small acute angle (in particular less than 20°) to this median plane 116.

[0163] The wall 146 is in particular a wall which laterally limits the receiving space 70 for the blower device 72.

[0164] In the embodiment of the suction device 10, the cutout or recess 140 is open laterally, i.e. towards the first longitudinal side 38 or towards the second longitudinal side 40.

[0165] The recess or cutout 140 is open towards the first transverse side 48.

[0166] The cutout or recess 140 is covered by the web 134. It may be provided that an element 148, which adjoins the web 134 in the direction of the second transverse side 50, together with the web 134 forms a kind of cover or roof for the recess or cutout 140 and thus for the corresponding receptacle 126 or 128, in order to provide appropriate coverage from above.

[0167] In particular, the lid 104 is supported on the element 148.

[0168] The respective first receiving 126 or second receiving 128 is formed by means of the cutout or recess 140, the guide track 138 and the electrical contact device 130.

[0169] The electrical contact device 130 is located in the area of ​​the wall 144.

[0170] The device body 12 has opposing recesses or spaces 360a, 360b. The spaces 360a, 360b are each part of the recess or cutout 140. The spaces 360a, 360b are located in front of their respective associated recordings; the recess or space 360a is located in front of the first recording 126 and is associated with it; the recess or space 360b is located in front of the second recording 128.

[0171] The respective recess or free space 360a, 360b is bounded downwards (relative to the height axis 58) by the floor 142. In particular, the floor 142 is flat in the area of ​​the recess or free space 360a, 360b.

[0172] The recess or free space 360a, 360b is open to the front towards the first transverse side 48. It is also open to the outside (towards the first longitudinal side 38 for recess or free space 360a, and towards the second longitudinal side 40 for recess or free space 360b). Opposite this, recess or free space 360a, 360b is bounded by the central block 132. To the rear, recess or free space 360a, 360b is bounded by the associated first receptacle 126 or the associated second receptacle 128, respectively.

[0173] The recess or free space 360a, 360b of the suction device 10 is limited at the top by the bridge 134.

[0174] To place the respective battery unit 122 or 124 into the assigned receptacle 126, 128, it is pushed through the corresponding recess or free space 360a or 360b.

[0175] Since the recess or free space 360a, 360b is open towards the first transverse side 48, a passage through the recess or free space 360a, 360b occurs from the first transverse side 48.

[0176] When the respective battery unit 122 or 124 is positioned in the corresponding receptacle 126 or 128, then the corresponding battery unit 122 or 124 protrudes with a partial area 362 into the corresponding recess or free space 360a or 360b (compare, for example, Figure 1 ).

[0177] The respective battery unit 122 or 124 has a housing 364. The housing 364 has a first longitudinal side 366 and an opposite second longitudinal side 368. It also has a front 370. A charge status indicator 160 is arranged on the front 370.

[0178] A gripping device 372 is arranged on the housing 364 of the respective battery unit 122, 124 on the first longitudinal side 366 and on the second longitudinal side 368. The gripping device 372 comprises, in particular, a plurality of parallel ribs.

[0179] When the respective battery unit 122, 124 is positioned on the device body 12, the corresponding struts are oriented in particular transversely and preferably perpendicularly to the base 142.

[0180] In particular, the first battery unit 122 and the second battery unit 124 are designed as mirror images with respect to their housing 364 (that is, with respect to their external shape). The corresponding grip device 372 is located on the first longitudinal side 366 and on the second longitudinal side 368, respectively, so that the respective battery unit 122 or 124 is suitable for both mounts 126, 128.

[0181] When the corresponding battery unit 122 or 124 is seated in the associated receptacle 126 or 128, the handle 372 is positioned in the recess or in the free space 360a, 360b. It points outwards, in particular, towards the corresponding first longitudinal side 38 or the second longitudinal side 40.

[0182] An operator can grasp the corresponding battery unit 122, 124 on the external handle 372 and pull the corresponding battery unit 122, 124 out of the corresponding receptacle 126 or 128.

[0183] The recess or free space 360a, 360b is located upstream of the respective intake 126 or 128 with respect to the insertion direction 150.

[0184] The receptacles 126, 128 and the associated recesses or free spaces 360a, 360b are designed such that when the battery unit 122, 124 is positioned at the corresponding receptacle 126, 128, the respective battery unit 122, 124 does not extend beyond the first transverse side 48 and also does not extend beyond the first longitudinal side 38 or the second longitudinal side 40.

[0185] A battery unit 122 or 124 can be inserted into the corresponding receptacle 126 or 128 in an insertion direction 150, and in particular, pushed in. The opposite direction to the insertion direction 150 is an extraction direction. In this direction, the corresponding battery unit 122 or 124 can be removed from the corresponding receptacle 126 or 128.

[0186] The insertion direction 150 is determined by the guide track 138 and its arrangement on the floor 142.

[0187] The insertion direction 150 lies perpendicular to the first transverse side 48. The corresponding battery unit 122 or 124 can be inserted into the respective receptacle 126 or 128 via the first transverse side 48.

[0188] The insertion direction 150 lies perpendicular to the height axis 58.

[0189] In the suction device 10 according to the first embodiment, the insertion direction 150 is perpendicular to the vertical axis 58. It can also be at an acute angle to the vertical axis (compare the Figures 10 to 12 ).

[0190] The insertion direction 150 lies transversely and, in particular, perpendicularly to the wheel axis 36.

[0191] The insertion direction 150 lies at least approximately parallel to the support plane 56. "Approximately" means that there is at most a small acute angle, for example less than 15°, between the insertion direction 150 and the support plane 56.

[0192] The same applies to the execution direction as the opposite direction to the insertion direction 150. Figure 1 This direction of execution is indicated by reference numeral 152.

[0193] In one embodiment, the suction port 106 is arranged with a central axis 154 at an acute angle to the vertical axis 58. Accordingly, it is at an acute angle 156 ( Figure 3 ) to the standing plane 56. In particular, the suction port 106 is arranged such that the central axis 154 intersects an outer surface of the central block 132 at least approximately perpendicularly. Accordingly, the acute angle 156 is equal in magnitude or approximately equal to the angle 136.

[0194] An insertion direction 158 for a sleeve of a suction hose (compare Figure 3) lies parallel to the central axis 154. Accordingly, the insertion direction 158 lies at an acute angle to the height axis 58 or at an acute angle to the suction port 106.

[0195] In the illustrated embodiment, the insertion direction 158 for a suction hose to the suction port 106 is at an acute angle, which corresponds in magnitude to the acute angle 156, to the insertion direction 150 for the respective battery unit 122, 124 into the respective receptacle 126 or 128.

[0196] The battery unit 120 is assigned the charge status indicator 160. The charge status indicator 160 displays the charge status of the respective battery unit 122 or 124.

[0197] In the illustrated embodiment, the charge status indicator 160 is arranged on the respective battery unit 122 or 124.

[0198] However, it is also possible that a charge level indicator 160 is arranged on the suction head 16, with each of the first intake 126 and the second intake 128 having its own charge level indicator 160. If a battery unit 122, 124 is attached to the corresponding intake 126 or 128, the charge level can be optically detected via the charge level indicator 160 on the respective battery unit 122 or 124, or on the respective intake 126 or 128.

[0199] Due to the arrangement of the receiver 126 or 128 on the suction head 16, the charge status indicator 160 can be read by an operator from the first transverse side 48.

[0200] The charge status indicator 160 is then arranged accordingly on the respective battery unit 122, 124 on a transverse side, which, when the battery unit 122 or 124 is fixed, is located next to the central block 132 on the corresponding receptacle 126 or 128 towards the transverse side 48.

[0201] An operator located in front of the first transverse side 48 can insert or remove the respective battery unit 122, 124 from this position via the first transverse side at the associated receptacle 126, 128.

[0202] From this position, he can fix a suction hose with a suitable sleeve to the suction port 106.

[0203] From this position, the operator has access to the control panel 112 via the first transverse side 48 and can perform the corresponding operating procedures.

[0204] The charge status indicators 160 of the battery unit 120 are within his field of vision 162 when he is in front of the first transverse side 48 (compare Figure 4 ).

[0205] If a suction hose is fixed to the suction port 106, an operator can also drive towards him by pulling on the suction hose.

[0206] The receptacles 126, 128 are open to the first transverse side 48 to allow the respective battery unit 122, 124 to be inserted in the insertion direction 150 from the first transverse side 48.

[0207] In the illustrated embodiment 10, the openings 126, 128 are open towards the respective longitudinal side 38, 40.

[0208] The first recording 126 and the second recording 128 are arranged symmetrically and mirror-symmetrically with respect to the central plane 116 on the suction head 16. They are located at the same height with respect to the height axis 58 and the base plane 56, respectively.

[0209] The first mounting 126 and the second mounting 128, and also the respective battery units 122, 124, when these are fixed to the mounting 126 or 128, are spaced transversely to the central plane 116.

[0210] The blower unit 72 is equipped with at least one sub-section (compare Figure 5) on the suction head 16 between the first receptacle 126 and the second receptacle 128. The first receptacle 126 and the second receptacle 128, and thus also the first battery unit 122 and the second battery unit 124, are spaced apart from each other in a transverse direction to the central plane 116. This transverse direction is perpendicular to the vertical axis 58 and, in particular, at least approximately parallel to the base plane 56.

[0211] Furthermore, the control device 96 is positioned on the suction head 16 with at least a partial area between the first intake 126 and the second intake 128 (compare Figure 4 ).

[0212] The control panel 112 and the suction port 106 are located between the first inlet 126 and the second inlet 128 on the first transverse side 48.

[0213] The first recording 126 and the second recording 128 are positioned laterally to the blower device 72 on the suction head 16 with respect to this transverse direction.

[0214] The first image 126 and the second image 128 each have a bottom surface 164 with respect to the height axis 58. This bottom surface 164 is essentially formed by the base 142.

[0215] Images 126 and 128 still show a top surface 166 with respect to the vertical axis 58. The top surface 166 and the bottom surface 164 are spaced apart from each other along the vertical axis 58.

[0216] The upper surface 166 is essentially formed by a bottom surface of the web 134 and by a bottom surface of the element 148.

[0217] The underside of the respective inlet 126, 128 lies at the same height as the suction port 106 with respect to the height axis 58 (compare Figure 2 ).

[0218] The suction port 106 has a vertical extension. The underside 164 lies within this vertical extension.

[0219] The upper surface 166 of the respective recording 126, 128 lies at the same height as the control panel 112 with respect to the height axis 58 ( Figure 2 ). The control panel 112 also has an extension in a vertical direction, and the upper surface 166 lies within this extension with respect to the vertical axis 58.

[0220] This also applies to the corresponding battery units 122, 124 when they are positioned at the respective mounting points 126, 128. The underside of the respective battery unit 122 or 124 is at the same height as the suction port 106. The top side of the respective battery unit 122, 124 is at the same height as the control panel 112.

[0221] The control panel 112 can be assigned a center 168, which is located on the middle level 116.

[0222] A first line from this center 168 to a geometric center of the first recording 126, a second line from this center to a corresponding (geometric) center of the second recording 128, and a third line from this center of the second recording 128 to the center of the first recording 126 together form a straight line, or, as in the case of the suction device 10, a triangle 170. This triangle 170 is an equilateral triangle due to the symmetrical arrangement of the first recording 126 and the second recording 128 with respect to the median plane 116. Figure 2 ).

[0223] If the respective battery units 122, 124 are arranged at the mounts 126, 128, and a center is assigned to the battery units 122, 124, which can be a center of mass or a geometric center, then corresponding lines to the center 168 also form a triangle.

[0224] A first line from a center of the first recording 126 to a center 172 of the suction port 106, a second line from this center 172 to a center of the second recording 128, and a third line from the center of the second recording 128 to the center of the first recording 126 together also form a triangle 176, or a straight line.

[0225] This triangle 176 is also equilateral.

[0226] The center 172 of the suction port 106 lies on the central plane 116. It essentially corresponds to an intersection of the central axis 154 with the first transverse side 62 of the suction head.

[0227] When the battery units 122, 124 are inserted at the respective receptacles 126, 128, then a first line between the center of the first battery unit 122 and the center 172, a second line between the center 172 and the center of the second battery unit 124, and a third line between the centers of the second battery unit 124 and the first battery unit 122 together also form a triangle.

[0228] In Figure 2 The embodiment shown includes triangle 170 and triangle 176.

[0229] It is also possible in principle that by moving the suction port 106 closer to the control panel 112, triangle 170 or triangle 176 degenerates into a straight line.

[0230] When the first battery unit 122 and the second battery unit 124 are inserted, their common center of mass lies on the median plane 116. The center of mass 118 lies on the median plane 116, or at a small distance (in particular less than 10 cm and preferably less than 5 cm) from the median plane 116. Therefore, no tilting moment is generated on the device body 12 by the battery assembly 120.

[0231] In order to prevent a tipping moment when only one electrically effective battery unit is used, it can be provided that the other battery unit 122 forms a counterweight, which is in a sense a "battery dummy", and which ensures that the center of mass of the battery device lies on the intermediate plane 116.

[0232] A carrying handle 178, particularly in the form of a handle, is arranged on the lid 104. In one embodiment, the carrying handle 178 is arranged such that it does not project beyond any surface of the lid 104. The lid surface 104 can be used, in particular, as a storage surface.

[0233] The carrying handle 178 is located on the middle level 116.

[0234] With the lid 104 fixed, the device body 12 can be held and, in particular, lifted using the carrying handle 178.

[0235] Due to the symmetrical arrangement, in particular the center of mass 118 of the device body including the battery assembly 120 lies on the central surface 116, no tipping moment is created.

[0236] The carrying handle 178 has, in particular, a ridge 180 for holding, which extends in a direction that runs between the first transverse side 48 and the second transverse side 50. Furthermore, the ridge 180 lies on the central plane 116.

[0237] This prevents any tipping moment when lifting. For example, the device body 12 can be easily lifted out of or inserted into the receptacle 28.

[0238] In order to "position" the center of mass 118 on the central plane 116, or at a small distance from it, the blower unit 72 is located on the central plane 116. Furthermore, the filter cleaning unit 88 is located on the central plane.

[0239] If corresponding battery units 122, 124 are inserted at the recordings 126, 128, then a line contour 182 ( Figure 4), which lines between the center of the first battery unit 122, a center 184 of the filter cleaning device 88, between the center 184 and the center of the second battery unit 124 and between the centers of the first battery unit 122 and the second battery unit 124 have the shape of a triangle and in particular an equilateral triangle.

[0240] The center 184 is a geometric center or center of mass of the filter cleaning device 88.

[0241] The apex of this triangle line contour 182 lies on the middle plane 116.

[0242] A projection of this triangle onto the base plane 56 is also a triangle. A projection of the center of mass 118 onto the base plane 56 lies within this projected triangle.

[0243] This results in high stability with minimized tipping moments.

[0244] In one embodiment, the blower device 72 lies at least partially, and preferably mostly, within this triangle 182 (compare Figure 5 ).

[0245] The device body 12 can be assigned a first part 186 and a second part 188 adjoining it. The first transverse side 48 is arranged on the first part 186. The second transverse side 50 is arranged on the second part 188. The first part 186 and the second part 188 share the first longitudinal side 38 and the second longitudinal side 40.

[0246] The recordings 126 and 128 are arranged on the first part 186. Similarly, the battery assembly 120 is arranged on the first part 186.

[0247] The filter cleaning device 88 is arranged on the second part 188.

[0248] The battery assembly 120 with the first battery unit 122 and the second battery unit 124 is positioned closer to the first transverse side 48 than to the second transverse side 50 when positioned on the suction head 16.

[0249] The filter cleaning device 88 on the second part 188 is closer to the second transverse side 50 than to the first transverse side 48.

[0250] In one embodiment, the blower device 72 is arranged on the first part 186.

[0251] The blower device is located closer to the first transverse side 48 than to the second transverse side 50, or is located midway between the first transverse side 48 and the second transverse side 50.

[0252] When the device body 12 is positioned in the receptacle 28, then geometrically the wheel assembly 30 is arranged on the second part 188 and the roller assembly 42 is arranged on the first part 186.

[0253] The wheel axis 36 lies perpendicular to the median plane 116.

[0254] This also prevents a tipping moment about a fictitious tipping axis, which is oriented perpendicular to the median plane 116.

[0255] Overall, the suction device 10 is positioned stably on a surface 29, even though the relatively heavy battery assembly 120 is fixed to the suction head 16 and thus to the device body 12.

[0256] It may be provided that the filter cleaning device 88 is arranged at the same height as the mounts 126, 128 with respect to the height axis 58, in particular also in comparison of the corresponding centers 184 and centers (geometric centers) of the first mount 126 and the second mount 128.

[0257] In particular, the centers of battery units 122 and 124 are then located at the same level as center 184.

[0258] It is also possible that the center 184 of the filter cleaning device 88 has a height difference in the height axis 58 with respect to centers of the first battery unit 122, 124 (and thus with respect to a center of the battery device 120).

[0259] In one embodiment, the impeller 74 of the blower assembly 72 is positioned lower with respect to the vertical axis 58 than the first mounting 126 and the second mounting 128; that is, with respect to the vertical axis 58, the impeller 74 lies below the respective base 142 (compare Figure 3 ).

[0260] This results in optimized space utilization.

[0261] In the suction device 10, the suction connection 106 and the control panel 112 are arranged on the first transverse side 48 for simplified operation by one operator.

[0262] The charge status indicators 160 can be read by an operator from this first transverse side 48.

[0263] The battery units 122, 124 can be inserted or removed via this first transverse side 48.

[0264] The battery assembly 120 is arranged symmetrically to the central plane 116. The center of mass 118 of the device body 12 lies at least approximately on the central plane 116.

[0265] Due to the symmetrical arrangement of the battery assembly 120 to the central plane 116, even when battery units 122, 124 are fixed to the mounts 126, 128, this center of mass is not significantly shifted out of the central plane.

[0266] This results in no or at most a very small tipping moment with respect to a fictitious tipping axis which is perpendicular to the height axis 58 and lies in the midplane 116.

[0267] This results in high stability for the vacuum cleaner 10.

[0268] The triangular line contour 182 results in optimized space utilization and minimizes the tipping moment. A tipping moment along a hypothetical tipping axis perpendicular to the central plane 116 is also minimized.

[0269] The system offers simple operation for the user. The vacuum cleaner 10 can also be equipped with the compact filter cleaning unit 88.

[0270] The recesses or spaces 360a, 360b associated with the mounts 126, 128 allow the battery units 122, 124 to be positioned flush or recessed with respect to the first transverse side 58 and the longitudinal sides 38, 40 on the device body 12. The battery units 122, 124 do not project beyond any enclosing edge of the device body 12; in particular, they do not project beyond the first transverse side 48 or the longitudinal sides 38, 40.

[0271] Furthermore, with the battery unit 122, 124 positioned at the respective receptacle 126 or 128, the corresponding battery unit 122, 124 can be easily pulled out of the device body 12 from the respective receptacle 126, 128 by an operator using the handle 372, which is accessible via the recess or free space 360a, 360b.

[0272] It is fundamentally possible that operation via the first transverse side 48 is also possible in an embodiment of a suction device which does not have a filter cleaning device 88.

[0273] It is generally possible that the vacuum cleaner 10 can only be operated via the battery unit 120. Alternatively, it is also possible that the vacuum cleaner 10 can be operated via mains power.

[0274] It is specifically provided that the rechargeable battery units 122, 124 are charged outside the vacuum cleaner 10 and that the battery units 122, 124 are accordingly removable.

[0275] It may also be provided that although the battery units 122, 124 are removable, a charger is integrated into the vacuum cleaner 10.

[0276] A second embodiment of a suction device according to the invention, which is located in the Figures 6 to 9 The device shown and designated 190 is essentially identical in design to the suction device 10. Reference numerals are used for identical elements as for the suction device 10. The suction device 190 differs from the suction device 10 in the design of the receptacles for the battery assembly 120.

[0277] The suction device 190 comprises a suction container 14 and a suction head 192. On the suction head 192 are arranged a first receptacle 194 and a second receptacle 196 for respective battery units 122, 124.

[0278] The suction head 192 is basically designed the same as the suction head 16, except for the mounts 194 and 196.

[0279] Images 194 and 196 differ from images 126 and 128 in that they each have a closed chamber 198.

[0280] In front of chamber 198 of the respective recording 126, 128, a recess or free space corresponding to the recesses or free spaces 360a, 360b of the suction device 10 is formed on the suction head 192.

[0281] Such a chamber 198 comprises a wall 200, which has an interior space 202. The chamber 198 is cuboid in shape.

[0282] Chamber 198 has an opening 204 facing a transverse side corresponding to the first transverse side 48. The opening 204 is an insertion opening for a corresponding battery unit 122 or 124 into the interior 202.

[0283] A movable cover 206 is attached to chamber 198, which serves to close chamber 198.

[0284] The cover 206 has a basic position 208 ( Figure 6 , 7 ), in which he closes chamber 198 at the insertion opening 204.

[0285] For example, a spring device 210 is provided which holds the cover 206 in this basic position 208 or brings it into this basic position (see below).

[0286] The interior 202 is closed in the basic position 208 of the cover 206 and is therefore dust-protected.

[0287] The electrical contact device 130 is located in the interior space 202. It is also dust-protected.

[0288] In particular, it is provided that the cover 206 is only in its basic position 208 if no battery unit 122 or 124 is inserted in the respective receptacle 194, 196.

[0289] Battery units 122 and 124, respectively, can be inserted into the respective slots 194 and 196 (compare the Figures 8 and 9 , in which corresponding intermediate states are shown for battery unit 124).

[0290] The insertion is carried out in the insertion direction according to insertion direction 150 ( Figure 7 The cover 206 is arranged as a flap on a top surface 212 of the chamber 198 (compare Figure 9 When the corresponding battery unit 122 or 124 is inserted into the insertion opening 204, the cover 206 is pivoted and thereby pivoted into the interior 202.

[0291] A corresponding pivot axis 214 of a pivot joint, on which the cover 206 is mounted, is oriented transversely to the corresponding vertical axis 58 and, in particular, perpendicular to it. The pivot axis 214 is oriented, in particular, parallel to a standing plane corresponding to the standing plane 56 of the suction device 10.

[0292] A pivoting motion from the basic position 208 is only possible for the cover 206 in the direction of the interior 202 (compare Figure 9 ).

[0293] The force required to pivot the cover 206 into the interior 202 about the pivot axis 214 is applied by an operator when moving the corresponding battery unit 122 or 124.

[0294] In Figure 8 An intermediate state is shown in which the battery unit 122 is already installed.

[0295] In this state, the corresponding cover 206 is located in the interior 202 above the battery unit 122.

[0296] Furthermore, in Figure 8 The state of straightening and inserting the second battery unit 124 is shown.

[0297] This causes, as shown, Figure 9 As can be seen, the cover 206 is swung upwards into the interior 202, and the second battery unit 124 can then be inserted until a locking position is reached. In the locking position, an electrical contact with the electrical contact device 130 is then established.

[0298] When a battery unit 122, 124 is positioned at the corresponding receptacle 194 or 196, it protrudes in a similar manner as described with reference to the suction device 10 into the corresponding recess or free space in front of the respective receptacle 194, 196.

[0299] A handle 372 on the respective battery unit 122, 124 is then freely accessible to an operator, thus facilitating removal. The operating principle is essentially the same as described above using the suction device 10 as an example.

[0300] When the corresponding battery unit 122, 124 is removed again, the cover 206 swings back into its basic position 208 due to the spring action of the spring device 210 and the chamber 198 is sealed dust-tight.

[0301] The drawings 194, 196 are arranged with respect to the other elements of the suction device 10 (control panel 112, suction connection 106, blower unit 72, filter cleaning unit 88 etc.) as described above with reference to the suction device 10 with the drawings 126, 128.

[0302] Another embodiment of a suction device 216 according to the invention, which is located in the Figures 10 to 12 is shown, whereby in the Figure 11 , 12The partial illustrations show a difference in the design of the mounts for the battery unit 120 compared to the suction device 10. The same reference symbols are used for identical elements as in the suction device 10.

[0303] A suction head 218 is attached to a corresponding suction container 14.

[0304] The suction head 218 has a central block 220. A control panel 112 with a rotary knob 114 and a suction connection 106 are attached to the central block 220.

[0305] The central block 220 has an I-shape and, like the central block 132 of the suction device 10, is inclined at a corresponding first transverse side 48 to the wall 20 of the suction container.

[0306] (The middle block 220 does not have a bridge 134 compared to the middle block 132.)

[0307] Adjacent to the central block 220, a first receptacle 222 and a second receptacle 224 are arranged on the suction head 218. The arrangement is mirror-symmetrical to a geometric median plane of the suction device body 216, corresponding to the median plane 116, as described above with reference to the suction device 10.

[0308] The first recording 222 and the second recording 224 each comprise a chamber 226, which is closed except for an insertion opening 228.

[0309] A pivotally arranged cover 230 is located at the insertion opening 228 of chamber 226. The cover 230 is specifically designed as a flap. It is pivotally mounted on chamber 226 such that it opens into an interior space 234 (see figure). Figure 12 ) of the chamber 226 is pivotable. In particular, it is mounted on a top surface 236 of the chamber 226.

[0310] It has a basic position 232 in which it closes the chamber 226 at the insertion opening 228 (compare Figure 10 ).

[0311] In the basic position 232 of the cover 230, the chamber 226 is completely closed and thus, in particular, dust-protected. An electrical contact device 130, which is arranged on the chamber 226, is also dust-protected as a result.

[0312] The basic position 232 of the cover 230 is such that no battery unit 122 or 124 is located in the respective receptacle 222, 224 (compare Figure 10 for the second recording 224).

[0313] It is specifically provided that the cover 230 is assigned a spring device which ensures that the cover 230 is held in the home position 232 and automatically returns to the home position 232 (when a corresponding battery unit 122 or 124 is removed).

[0314] The chambers 226 of the recordings 222, 224 each have a longitudinal axis 238 ( Figure 11 ).

[0315] The chamber 226 extends along this longitudinal axis 238. A longitudinal wall 240 of the corresponding chamber 226 is essentially aligned parallel to this longitudinal axis 238.

[0316] Chamber 226 is oriented at an acute angle 242 to the vertical axis 56 (compare Figure 11 The acute angle 242 lies, for example, in the range between 30° and 60°, and particularly in the range between 40° and 50°. Preferably, it is approximately 45°.

[0317] Accordingly, the longitudinal axis 238 lies at an acute angle 244 to a plane 246, which is parallel to the base plane 56.

[0318] In particular, the acute angle 242 and the acute angle 244 combine to form a 90° angle.

[0319] The acute angle 242 is accordingly preferably in the range between 30° and 60° and particularly in the range between 40° and 50°.

[0320] In one specific embodiment, it is at approximately 45°.

[0321] The corresponding battery unit 122 or 124 can be inserted into the corresponding chamber 226 of the corresponding receptacle 222 or 224 with an insertion direction 248 at the insertion opening 228. The insertion direction 248 is parallel to the longitudinal axis 238 of the respective chamber 226.

[0322] Accordingly, the insertion direction 248 lies at the acute angle 242 to the altitude axis 58, and lies at the acute angle 244 to the plane 246.

[0323] A counter-direction 250 for removing the corresponding battery unit 122, 124 from the receptacle 222, 224 is antiparallel to the insertion direction 248.

[0324] The suction device 216 has a displacement direction 252 via the drive mechanism 24 (compare Figure 10 ) on a surface 29. The direction of displacement 252 can be at a variable angle to the wheel axis 36 due to the steering rollers 44, 46.

[0325] The first recording 222 and the second recording 224 are also oriented at an acute angle to the height axis 58, which essentially corresponds to the acute angle 244 to the displacement direction 252, due to the oblique arrangement.

[0326] The insertion direction 248 lies at an acute angle (corresponding to the acute angle 244) to the displacement direction 252.

[0327] The insertion direction 248 lies at an acute angle corresponding to the acute angle 244 to the wheel axis 36.

[0328] The inclined arrangement of the chambers 226 of the receptacles 222, 224 prevents or reduces displacement and, in particular, movement of the suction device 216 when a battery unit is inserted. This effectively prevents the suction device from "moving away" when a battery unit is inserted into the corresponding receptacle 222, 224.

[0329] In the basic position 232, the cover 230 is closed (see below). Figure 10 on the second recording 224 or Figure 11 ).

[0330] When a battery unit, such as the second battery unit 124, is inserted, the cover 230 is folded into the interior 234 ( Figure 12 ). The corresponding battery unit can then be brought into the interior 234 until electrical contact is made with the electrical contact device 130 and a corresponding fixing position is reached.

[0331] This largely prevents the suction device 216 as a whole from shifting on the surface 29.

[0332] When the corresponding battery unit is inserted, it protrudes beyond chamber 226, so that in particular a charge level indicator 160 is visible to an operator from the first transverse side 48.

[0333] The suction head 218 has a recess or a free space 255 in front of the respective inlet 222, 224 (compare, for example, Figure 10 ) formed. This recess or free space 255 basically has the same function as the recess or free space 360a, 360b as described above.

[0334] The recess or free space 255 is not limited at the top due to the I-shaped design of the central block 220.

[0335] When the corresponding battery unit 122, 124 is located in the respective chamber 226, then a portion of it protrudes into the recess or free space 255, such that a gripping device 372 is accessible to an operator.

[0336] It is specifically provided that the corresponding battery unit 122 or 124, when inserted in the chamber 226, does not extend beyond an envelope of the suction head 118 and does not extend beyond the first transverse side or beyond a corresponding longitudinal side.

[0337] The insertion or removal of the corresponding battery unit 122, 124 also takes place from the first transverse side 48.

[0338] In Figure 10 A first battery unit 122 is shown.

[0339] When a corresponding battery unit 122 or 124 is removed from the chamber 226, the corresponding cover 230 folds back into the home position 232 due to its spring action and the chamber 226 is also closed at the insertion opening 228.

[0340] In the suction device 216, the insertion openings 228 of the mounts 222, 224 are at the same height as the control panel 112 (compare Figure 10 With respect to the height axis 58, the suction port 106 is lower than the insertion openings 228.

[0341] Due to the slanted arrangement of the chambers 226, it is possible that a rear area 254 (compare Figure 12 ) the chambers 226 are at the same height as the suction port 106 with respect to the vertical axis 58.

[0342] Otherwise, the geometric design of the suction head 216 is the same as described above using the suction head 16 as an example.

[0343] In particular, the mountings 222, 224 are symmetrical to a geometric median plane of the suction head 218. The control panel 112 and the suction port 106 are located on this median plane.

[0344] Furthermore, the geometric arrangement in relation to other components of the suction device 10, such as the blower unit 72 and the filter unit 88, is as described above.

[0345] A fourth embodiment of a suction device according to the invention, which is in Figure 13 The device body 258, shown and designated 256, comprises a device body 258. The device body 258 can be supported on a surface by means of a drive mechanism 260.

[0346] The device body 258 has a suction container 262. A suction connection 264 is arranged on the suction container 262, to which a suction hose or a suction pipe can be fixed via a corresponding sleeve.

[0347] A removable intermediate ring 266 is attached to the suction container 262. The intermediate ring 266 is removablely fixed to the suction container 262, in particular by a locking flap device 268.

[0348] A suction head 270 is detachably attached to the intermediate ring 266. The intermediate ring 266 is detachably connected to the suction head 270, in particular via a locking flap device 272.

[0349] A control panel 274 is attached to the suction head 270. A blower unit and, if necessary, a filter cleaning unit are arranged on the suction head 270.

[0350] The intermediate ring 266 between the suction head 270 and the suction container 262 has a receiving device 276 for a battery unit. In particular, the receiving device 276 has a plurality of receiving devices 278, each receiving device being able to receive a battery unit 280.

[0351] In the illustrated embodiment, the receiving device 276 has three receiving points. Accordingly, three battery units 280 can be received.

[0352] The device body 258 has a first transverse side 282. Opposite this, it has a second transverse side 284. Between the first transverse side 282 and the second transverse side 284 lie a first longitudinal side 286 and an opposite second longitudinal side 288.

[0353] The control panel 274 is located on the first transverse side 282. Likewise, the suction connection 264 is located on the first transverse side 282.

[0354] The receiving device 276 has an insertion opening 290, which is arranged on the first transverse side 282.

[0355] The device body 258 has a geometric median plane 292, which is oriented transversely to the first transverse side 282 and transversely to the second transverse side 284, and which lies midway between the first longitudinal side 286 and the second longitudinal side 288.

[0356] The control panel 274 and the suction port 264 are located on the middle level 292.

[0357] The receiving device 276 is also located on the intermediate plane 292 and is symmetrical and, in particular, mirror-symmetrical to the intermediate plane 292.

[0358] A mean image 278 lies on the middle level 292.

[0359] The intermediate ring 266 is essentially a holder for the battery assembly. It is arranged in such a way that it does not obstruct filter cleaning by the filter cleaning device.

[0360] The device body 258 has a height axis 294. The receiving device 276 is located between the suction port 264 and the control panel 274 with respect to the height axis 294. Accordingly, battery units inserted in the receiving device 276 are positioned between the suction port 264 and the control panel 274 with respect to the height axis 294.

[0361] When a filter cleaning device is provided, it is arranged on the suction head 270 and is therefore located above the receiving device 276 or the battery units, if these are positioned on the receiving device 276, with respect to the height axis 294.

[0362] The center of mass of the device body 258 lies on the intermediate plane 292.

[0363] The center of mass of the battery units, when inserted into the receiving device 276, is also located on the intermediate plane 292.

[0364] In particular, a blower unit and also a filter cleaning unit, if present, are located at the middle level 292.

[0365] Battery units 280 can be inserted into the respective receptacles 278 in an insertion direction 296. In the opposite direction, battery units 280 can be removed from the receptacle 276.

[0366] The insertion or removal is carried out from the first transverse side 282.

[0367] The control panel 274 can be operated from the first transverse side 282. The suction connection 264 is accessible from the first transverse side 282.

[0368] A charge level indicator, which is located on the respective battery units 280 or on the recordings 278, can be read from the first transverse side 282.

[0369] The respective outer edges of the receiving device 276 or of inserted battery units 280, which are adjacent to the first longitudinal side 286 and the second transverse side 288, and from which a line leads to a center of the filter cleaning device, form an equilateral triangle, the center of which lies on the median plane 292.

[0370] A projection of this triangle 298 onto the base plane of the suction device 256 is such that a projection of the center of mass onto this base plane lies within this triangle.

[0371] A fifth embodiment of a suction device according to the invention, which is located in the Figure 14 and 15 The component shown in sectional views and designated there as 302 is basically designed the same as the suction device 10. The same reference symbols are used for identical elements.

[0372] The suction device 302 differs from the suction device 10 in the design of the filter cleaning device; a filter cleaning device 304 is provided which has a plurality of external air valves and in particular has two external air valves, namely a first external air valve 306a and a second external air valve 306b.

[0373] A plurality of external air valves 306 are provided to enable cleaning over a large filter area; the plurality of external air valves 306 allows external air supply to be achieved over a larger area.

[0374] The suction device 302 has a middle level corresponding to the middle level 116 of the suction device 10.

[0375] The center of mass of the filter cleaning device 304 lies on this central plane 116. The external air valves 306a, 306b are arranged symmetrically to the central plane 116, so that the center of mass of the filter cleaning device 304 as a whole lies on the central plane 116 (compare the Figure 14 and 15 ).

[0376] Otherwise, the vacuum cleaner 302 is designed like the vacuum cleaner 10 and functions in the same way.

[0377] In a sixth embodiment of a suction device, which is not covered by the claims, which is located in Figure 16As shown in perspective representation and labelled 320, it is provided, as with the suction device 10, that a center of mass of the device body lies at least approximately on the corresponding geometric median plane, that the filter cleaning device is arranged on the device body such that a center of mass of the filter cleaning device lies at least approximately on the median plane, and that the battery device is arranged on the device body such that a center of mass of the battery device lies on the median plane.

[0378] In the suction device 320, battery units 322 and 324 are positioned at their respective receptacles 326 and 328. The receptacles 326 and 328 are designed such that the battery units 322 and 324, respectively, can be inserted into or removed from the respective receptacles 326 and 328 via a top surface 330 of a suction head 332. An insertion direction 334 and an extraction direction 336 as the opposite direction are at least approximately parallel to a vertical axis 338 of the suction device 320.

[0379] The 320 vacuum cleaner, like the 302 vacuum cleaner, features a symmetrical arrangement of weight-relevant components around a central plane. This significantly reduces the risk of tipping.

[0380] The vacuum cleaner 320 differs from the vacuum cleaner 10 in that the battery units 322, 324 cannot be inserted or removed via a corresponding first transverse side 340, but rather via the top 330, which is perpendicular to the first transverse side 340.

[0381] The upper surface 330 lies transversely and, in particular, perpendicularly to the height axis 338. Reference symbol list

[0382] 10 Suction device (First embodiment) 12 Device body 14 Suction container 16 Suction head 18 Base 20 Wall 22 Interior 24 Wheel assembly 26 Frame 28 Mounting 29 Base 30 Wheel assembly 32 Right wheel 34 Left wheel 36 Wheel axle 38 First longitudinal side 40 Second longitudinal side 42 Caster assembly 44 First swivel caster 46 Second swivel caster 48 First transverse side 50 Second transverse side 52 Mounting 54 Locking flap assembly 56 Standing surface 58 Vertical axis 60 Suction head body 62 First suction head transverse side 64 Second suction head transverse side 66 First suction head longitudinal side 68 Second suction head longitudinal side 70 Mounting chamber 72 Blower assembly 74 Impeller 76 Pivot axis 78 Blower motor 80 Shaft 82 Filter unit 84 Filter holder 86 Receiving chamber 88 Filter cleaning unit 90 Air intake valve unit 92 Air intake valve 94 Clean side 96 Control unit 98 Flow direction 100 Dirty side 102 Top 104 Cover 106 Suction port 108 Pipe 110 Nozzle 112 Control panel 114 Rotary knob 116 Center plane 118 Center of gravity 120 Battery unit 122 First battery unit124 Second battery unit 126 First intake 128 Second intake 130 Electrical contact device 132 Center block 134 Web 136 Angle 138 Guide track 140 Recess 142 Base 144 Wall 146 Wall 148 Element 150 Insertion direction 152 Exit direction 154 Center axis 156 Acute angle 158 Insertion direction 160 Charge status indicator 162 Viewing field 164 Underside 166 Top side 168 Center 170 Triangle 172 Center 174 Triangle 176 Triangle 178 Carrying handle 180 Web 182 Line contour 184 Center 186 First part 188 Second part 190 Suction device (Second embodiment) 192 Suction head 194 First intake 196 Second intake 198 Chamber 200 Wall 202 Interior 204 Opening 206 Cover 208 Home position 210 Spring mechanism 212 Top 214 Swivel axis 216 Suction device (Third embodiment) 218 ​​Suction head 220 Center block 222 First intake 224 Second intake 226 Chamber 228 Insertion opening 230 Cover 232 Home position 234 Interior 236 Top 238 Longitudinal axis 240 Longitudinal wall 242 Acute angle 244 Acute angle 246 Plane 248 Insertion direction 250 Opposite direction252 Direction of displacement 254 Rear area 255 Recess or free space 256 Suction unit (Fourth embodiment) 258 Unit body 260 Transport device 262 Suction container 264 Suction port 266 Intermediate ring 268 Locking flap device 270 Suction head 272 Locking flap device 274 Control panel 276 Pickup device 278 Pickup 280 Battery unit 282 First transverse side 284 Second transverse side 286 First longitudinal side 288 Second longitudinal side 290 Feed opening 292 Center plane 294 Vertical axis 296 Feed direction 298 Triangle 302 Suction unit (Fifth embodiment) 304 Filter cleaning device 306 Air intake valve 306a First air intake valve 306b Second air intake valve 320 Suction device (Sixth embodiment) 322 Battery unit 324 Battery unit 326 Mounting 328 Mounting 330 Top 332 Suction head 334 Insertion direction 336 Exit direction 338 Vertical axis 340 First transverse side 360a Clearance 360b Clearance 362 Partial area 364 Housing 366 First longitudinal side 368 Second longitudinal side 370 Front 372 Handle device

Claims

1. Suction apparatus, comprising an apparatus body (12; 258), a fan device (72) for generating a suction flow, a battery device (120) having at least one battery unit (122, 124; 280) for providing electrical energy, at least one receptacle (126, 128; 194, 196; 222, 224; 278) for a battery unit (122, 124; 280) which is arranged at the apparatus body (12; 258), and having at least one of the following: - an operating panel (112; 274) which is arranged on a transverse side (48; 282) of the apparatus body (12; 258), - a suction port (106; 264) which is arranged on a transverse side (48; 282) of the apparatus body (12; 258), characterized by at least one of the following: - the at least one receptacle (126, 128; 194, 196; 222, 224; 278) at the apparatus body (12; 258) is, relative to the transverse side (48; 282), arranged such that the battery unit (122, 124; 280) associated with the at least one receptacle (126, 128; 194, 196; 222, 224; 278) is capable of being brought into the at least one receptacle (126, 128; 194, 196; 222, 224; 278) from the transverse side (48; 282); - the at least one receptacle (126, 128; 194, 196; 222, 224; 278), relative to the transverse side (48; 282), is arranged at the apparatus body (12; 258) such that a state of charge indicator (160) is readable by an operator from the transverse side (48; 282), wherein the state of charge indicator (160) is arranged at the battery unit (122, 124; 280) or is arranged at the at least one receptacle (126, 128; 194, 196; 222, 224; 278).

2. Suction apparatus in accordance with claim 1, <b>characterized by at least one of the following: - a battery unit (122, 124; 280) is releasably positionable in an insertion direction (150; 248; 296) at the associated at least one receptacle (126, 128; 194, 196; 222, 224; 278) and is removable from the at least one receptacle (126, 128; 194, 196; 222, 224; 278) in an opposite direction to the insertion direction (150; 248; 296); - the at least one receptacle (126, 128; 194, 196; 222, 224; 278) comprises a fixing device for the associated battery unit (122, 124; 280); - the at least one receptacle (126, 128; 194, 196; 222, 224; 278) has an electrical contact device (130) associated therewith; - the at least one receptacle (126, 128; 194, 196; 222, 224; 278) comprises a guide track (138) for the associated battery unit (122, 124; 280); - a battery unit (122, 124; 280) is receivable by the at least one receptacle (126, 128; 194, 196; 222, 224; 278), which battery unit (122, 124; 280) is a balance weight for an electrically operative battery unit (122, 124; 280) and which in weight corresponds to the weight of the electrically operative battery unit (122, 124; 280); - the operating panel (112; 274) and the suction port (106; 264) are arranged on the same transverse side (48; 282).

3. Suction apparatus in accordance with claim 1 or 2, characterized by at least one of the following: - the at least one receptacle (126, 128; 194, 196; 222, 224; 278) is open to the transverse side (48; 282) and / or is open to a longitudinal side to which the transverse side (48; 282) is oriented transversely; - the at least one receptacle (194, 196; 222, 224) comprises a chamber (198; 226) which, in particular, is closed except for an insertion opening (204; 228), and, in particular, a movable cover (206; 230) for the insertion opening (204; 228) is arranged at the chamber (198; 226).

4. Suction apparatus in accordance with any one of the preceding claims, characterized by at least one of the following: - a battery unit (122, 124; 280) positioned at the at least one receptacle (126, 128; 194, 196; 222, 224; 278) does not project beyond the transverse side (48; 282); - a battery unit (122, 124; 280) positioned at the at least one receptacle (126, 128; 194, 196; 222, 224; 278) is positioned in flush relation to the transverse side (48; 282) or in set back relation to the transverse side (48; 282) at the apparatus body (12; 258), - a battery unit (122, 124; 280) positioned at the at least one receptacle (126, 128; 194, 196; 222, 224; 278) does not project beyond a longitudinal side (38; 40; 286; 288) of the apparatus body (12; 258), wherein the longitudinal side (38; 40; 286; 288) is oriented transversely to the transverse side (48; 282); - a battery unit (122, 124; 280) positioned at the at least one receptacle (126, 128; 194, 196; 222, 224; 278) is positioned flush relative to a longitudinal side (38; 40; 286; 288) or is set back relative to the longitudinal side (38; 40; 286; 288), wherein the longitudinal side (38; 40; 286; 288) is oriented transversely to the transverse side (48; 282).

5. Suction apparatus in accordance with any one of the preceding claims, characterized in that the apparatus body (12; 258) comprises a recess or a free space (360a; 360b) which is associated with the at least one receptacle (126; 128), wherein the free space or the recess (360a; 360b) is open to the transverse side (48; 282), and wherein the at least one receptacle (126; 128) adjoins the associated free space or the associated recess (360a; 360b) in a direction transverse to the transverse side (48; 282) and, in particular, in an insertion direction (150) for the battery unit (122; 124) into the associated receptacle (126; 128), and in particular characterized by at least one of the following: - the free space or the recess (360a; 360b) is located in front of the associated at least one receptacle (126; 128); - the free space or the recess (360a; 360b) is bounded in a downward direction by a bottom (142), and in particular by a flat bottom (142), at the apparatus body (12; 258); - the free space or the recess (360a; 360b) is bounded in a direction towards one side thereof by a middle block (132); - the free space or the recess (360a; 360b) is open to a second side which is a longitudinal side (38; 40) of the apparatus body (12; 258), wherein the longitudinal side (38; 40) is oriented transversely to the transverse side (48); - a battery unit (122; 124) which is positioned at the at least one receptacle (126; 128) is located, in a portion (382) thereof, in the free space or in the recess (360a; 360b); - a battery unit (122; 124) is provided with a grip device (372) wherein, when the battery unit (122; 124) is positioned at the at least one receptacle (126; 128), the grip device (372) is positioned in the free space or in the recess (360a; 360b) and, in particular, is accessible to an operator via the free space or the recess (360a; 360b); - the grip device (372) is arranged on a longitudinal side (366; 368) or an upper side of the battery unit (122; 124), which longitudinal side (366; 368) or upper side, when the battery unit (122; 124) is positioned at the at least one receptacle (126; 128), is oriented transversely to the transverse side (48) of the apparatus body (12; 258) and, in particular, points in an outward direction; - a grip device (372) is arranged on each of a first longitudinal side (366) and an opposite second longitudinal side (368) of the battery unit (122; 124), and, in particular, the battery unit (122; 124) is formed mirror-symmetrically with respect to its external shape.

6. Suction apparatus in accordance with any one of the preceding claims, characterized by at least one first receptacle (126; 194; 222; 278) and at least one second receptacle (128; 196; 224; 278), and in particular characterized by at least one of the following: - the first receptacle (126; 194; 222; 278) and the second receptacle (128; 196; 224; 278) are arranged at the apparatus body (12; 258) in symmetrical, and in particular mirror-symmetrical, relation about a geometric center plane (116; 292) of the apparatus body (12; 258) or are arranged at the apparatus body (258) on the center plane (292) thereof, wherein the center plane (116; 292) is oriented transversely to the transverse side (48; 282); - the apparatus body (12; 258) has a height axis (58; 294) which is oriented perpendicularly to a standing plane (56) of the suction apparatus, and the first receptacle (126; 194; 222; 278) and the second receptacle (128; 196; 224; 278) are arranged at the apparatus body (12; 258) at a same height with respect to the height axis (58; 294); - the first receptacle (126; 194; 222; 278) and the second receptacle (128; 196; 224; 278) are spaced apart in a transverse direction with respect to a geometric center plane (116; 292) of the apparatus body (12; 258); - the fan device (72) is arranged, in at least a portion thereof, between the first receptacle (126; 194; 222) and the second receptacle (128; 196; 224;) at the apparatus body (12); - a control device (96) is arranged between the first receptacle and the second receptacle at the apparatus body (12).

7. Suction apparatus in accordance with claim 6, characterized by at least one of the following: - the operating panel (112) is arranged between the first receptacle (126; 194; 222) and the second receptacle (128; 196; 224) at the apparatus body; - the suction port (106) is arranged between the first receptacle (126; 194; 222) and the second receptacle (128; 196; 224) at the apparatus body (12); - the first receptacle (126; 194; 222) and the second receptacle (128; 196; 224) are arranged at a suction head (16) of the apparatus body (12), in particular with at least one of the following: - the operating panel (112) is arranged at the suction head (16); - the suction port (106) is arranged at the suction head (16) or at a suctioned material container (14).

8. Suction apparatus in accordance with any one of the preceding claims, characterized in that arranged at the apparatus body (12) is a middle block (132; 220) at which is positioned the operating panel (112), and in that arranged on both sides of the middle block (132; 220) at the apparatus body (12) is in each case a receptacle (126, 128; 194, 196; 222, 224), and in particular characterized by at least one of the following: - the middle block (132, 220) has the suction port (106) located thereat; - the middle block (132, 220) has an outer side which forms part of the transverse side (48; 282); - the middle block (132) comprises a web (134) which is positioned above the receptacles (126, 128; 194, 196), relative to a height axis (58) of the apparatus body (12); - the middle block is configured in I-shape or T-shape; - the middle block (132, 220) is located at a suction head (16) of the apparatus body (12); - the middle block (132, 220) has a control device (96) arranged thereat; - the middle block (132, 220) is of mirror-symmetrical configuration about a geometric center plane (116) of the apparatus body (12); - a movable cover (104) for a receiving space (86) of the apparatus body (12), in which receiving space (86) a filter cleaning device (88) for a filter device (82) and / or the filter device (82) is arranged, is supported on the middle block (132, 220); - the movable cover (104) has a carry handle (178) arranged thereat; - the at least one receptacle (126, 128; 194, 196; 222, 224) extends into an area located beneath the cover (104); - the at least one receptacle (126, 128; 194, 196; 222, 224) is, in at least a portion thereof, positioned laterally to the fan device (72) at the apparatus body (12).

9. Suction apparatus in accordance with any one of claims 1 to 6, characterized in that at least one receptacle (278) is arranged between the suction port (264) and the operating panel (274), relative to a height axis (294) of the apparatus body (258), and in particular characterized in that the operating panel (274) is arranged at a suction head (270) of the apparatus body (258) and in that the suction port (264) is arranged at a suctioned material container (262) of the apparatus body (258), in particular wherein the at least one receptacle (280) is arranged at an intermediate ring (266) which is arranged between the suctioned material container (262) and the suction head (270), in particular with at least one of the following: - the intermediate ring (266) is releasable from the suctioned material container (262); - the intermediate ring (266) is releasable from the suction head (270); - arranged at the intermediate ring (266) is a receiving space at which are located a plurality of receptacles (278), in particular wherein the receiving space is configured for receiving a plurality of battery units.

10. Suction apparatus in accordance with any one of the preceding claims, characterized in that a filter cleaning device (88) for a filter device (82) and / or the filter device (82) is arranged on a geometric center plane (116; 292) of the apparatus body (12; 258) that lies between a first receptacle (126; 194; 222) and a second receptacle (128; 196; 224).

11. Suction apparatus in accordance with any one of the preceding claims, characterized in that the suction apparatus comprises a standing plane (56) and in that the apparatus body (12; 258) comprises a height axis (58; 294) which is oriented perpendicularly to the standing plane (56), and wherein the at least one receptacle (126, 128; 194, 196; 222, 224) has associated therewith an insertion direction (150; 248; 296) for a corresponding battery unit (122; 124), with at least one of the following: - the at least one receptacle (126, 128; 194, 196; 222, 224) is arranged such that the insertion direction (150; 248; 296) is oriented transversely to the height axis (58; 294); - the at least one receptacle (126, 128; 194, 196; 222, 224) is arranged such that the insertion direction (150; 248; 296) is parallel or is at an acute angle (244) to the standing plane (56); - the insertion direction (150; 248; 296) is oriented transversely to the transverse side (48; 282); - the insertion direction (150; 248; 296) is oriented transversely, and in particular perpendicularly, to a wheel axis (36) of a wheel device (30), wherein the wheel device (30) is arranged at the apparatus body (12); - the insertion direction (150; 248; 296) is oriented parallel to a geometric center plane (116; 292) of the apparatus body (12; 258); - the insertion direction (150; 248; 296) is parallel to or is at an acute angle to a plug-in direction (158) for plugging a suction hose into the suction port (106); - the insertion direction (150; 296) is perpendicular to the height axis (58; 294) or is parallel to the standing plane (56), or an acute angle (242) of the insertion direction (248) to the standing plane (56) is in a range between 30° and 60°, and is in a range between 40° and 50° in particular.

12. Suction apparatus in accordance with any one of the preceding claims, characterized in that the at least one receptacle (222; 224) has an insertion direction (248) for a battery unit (122, 124) which is at an acute angle (244) to a displacement direction (252) of the suction apparatus on a ground surface (29), in particular characterized in that the acute angle (244) is in a range between 30° and 60°, and is in a range between 40° and 50° in particular, and / or characterized in that the apparatus body (12) is supported on a ground surface (29) via a wheel device (30) having a wheel axis (36), and in that the displacement direction (252) is oriented perpendicularly to the wheel axis (36).

13. Suction apparatus in accordance with any one of the preceding claims, <b>characterized in that the transverse side having the operating panel (112; 274) and / or having the suction port (106; 264) is a first transverse side (48; 282) and in that the apparatus body (12; 258) has a second transverse side (50; 284) which is spaced apart from the first transverse side (48; 282), and in that arranged at the apparatus body (12; 258) is a wheel device (30) with at least one of the following: - the wheel device (30) is positioned closer to the second transverse side (50; 284) than to the first transverse side (48; 282) at the apparatus body (12; 258); - a wheel (32; 34) of the wheel device (30) is arranged in front of a longitudinal side (38; 40; 286; 288) of the apparatus body (12; 258), wherein the longitudinal side (38; 40; 286; 288) is between the first transverse side (48; 282) and the second transverse side (50; 284); - a connecting line between a receptacle (126, 128; 194, 196; 222, 224; 278) and a wheel (32; 34), wherein the receptacle (126, 128; 194, 196; 222, 224; 278) and the wheel (32; 34) are associated with a longitudinal side (38; 40; 286; 288), is at an acute angle to a height axis (58; 294) of the apparatus body (12; 258).

14. Suction apparatus in accordance with any one of the preceding claims, characterized by at least one of the following: - an underside of the at least one receptacle (126, 128; 194, 196; 222, 224), relative to a height axis (58) of the apparatus body (12), is at the same height as the suction port (106) or is below the suction port (106); - an upper side of the at least one receptacle (126, 128; 194, 196; 222, 224), relative to a height axis (58) of the apparatus body (12), is at the same height as the operating panel (112) or is above the operating panel (112).

15. Suction apparatus in accordance with any one of the preceding claims, characterized in that a course of a contour of a line between the first receptacle (126) and the second receptacle (128), of a line between the second receptacle (128) and the suction port (106), and of a line between the suction port (106) and the first receptacle (126) is a straight line or is a triangle (174), and is an equilateral triangle (174) in particular, and / or characterized in that a course of a contour of a line between the first receptacle (126) and the second receptacle (128), of a line between the second receptacle (128) and the operating panel (112), and of a line between the operating panel (112) and the first receptacle (126) is a straight line or is a triangle (170), and is an equilateral triangle (170) in particular.

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