SUSPENSION DEVICE

Description

[0001] The present invention relates to a suction device having the features of the preamble. State of the art

[0002] A suction device according to the preamble of claim 1 is already known from the prior art. Further suction devices are disclosed in the documents KR 2002 0078593 A, EP 2 279 685 A1 and US 2003 / 150198 A1. Problem of the state of the art

[0003] Furthermore, electrostatic charging in vacuum cleaners is known from the prior art. The problem with electrostatic charging is that the electrostatic charge can be discharged via a user during operation and shortly after the vacuum cleaner has stopped operating, as soon as the user touches the vacuum cleaner. The electrostatic charge can be discharged suddenly via the user. Another problem with electrostatic charging is that the discharge can occur via a control unit of the vacuum cleaner. The discharge via the control unit can damage or destroy the vacuum cleaner.

[0004] Electrostatic charging typically has two causes. The first is the airflow that flows through a suction hose and may contain dirt particles. As the airflow flows through the suction hose, it generates the electrostatic charge due to the friction of the airflow against an inner wall of the suction hose. The first cause is solved by an electrically conductive suction hose, which discharges electrostatically as soon as the suction hose comes into contact with a surface. A second cause is the rotation of the airflow within a cyclone chamber of the vacuum cleaner. The rotation of the airflow with the dirt particles it contains within the cyclone chamber also leads to an electrostatic charge due to air friction. The present invention provides a solution to this problem. Disclosure of the invention

[0005] The present invention is based on a suction device with an electrically conductive suction hose, with a housing, wherein the electrically conductive suction hose is designed, in particular detachably connectable, to the housing, with an electric motor for generating an air flow, wherein the electrically conductive suction hose is designed such that the electrically conductive suction hose directs the air flow to the housing, and the housing has an electrically conductive air inlet through which the air flow can enter the housing, and an air outlet through which the air flow can leave the housing, with a cyclone chamber, and with a collecting container, wherein the collecting container is designed to be detachably connectable to the housing and at least partially encloses the cyclone chamber.It is proposed that the suction device comprises a charge conducting device at least partially within the cyclone chamber for absorbing electrical charge within the cyclone chamber.

[0006] The invention provides a suction device with at least one charge conducting device that increases safety for the user by the charge conducting device absorbing the electrical charge within the cyclone chamber.

[0007] The suction device is designed to collect and separate material particles and / or liquids from the air stream. The air stream is guided via the electrically conductive suction hose to the electrically conductive air inlet. As described above, the electrically conductive suction hose can discharge electrostatically as soon as the electrically conductive suction hose touches a surface. The electrically conductive suction hose is designed such that it can touch the surface when the suction device is in use. For this purpose, the electrically conductive suction hose can be relatively long, for example up to 5 m. The electrically conductive suction hose can be detachably connected to the housing. Furthermore, the electrically conductive suction hose can be detachably connected to the electrically conductive air inlet and is well known to those skilled in the art.

[0008] The airflow is generated by the electric motor. The airflow enters the housing via the electrically conductive air inlet, where it is guided into the collection container via a first air duct. The collection container is designed to collect the particles and / or liquids, and the collection container is detachably connected to the housing of the vacuum cleaner. The airflow exits the housing via the collection container and the air outlet via a second air duct.

[0009] The electrically conductive air inlet is designed to conduct electrical charge as soon as it touches the electrically conductive air inlet. For this purpose, the electrically conductive air inlet can be made of an electrically conductive material. Electrically conductive air inlets are primarily found in mains-powered vacuum cleaners, which is why they will not be discussed in detail here.

[0010] The electrically conductive air inlet and the air outlet of the suction device can be arranged on opposite sides. "Opposite sides" should also be understood to mean, in particular, sides of the suction device that are oriented essentially perpendicular to each other or essentially opposite sides.

[0011] An "air flow" is understood in particular to mean a particle, fluid, and / or gas flow that moves along a direction of travel through the vacuum cleaner. A "direction of travel" of the air flow is understood in particular to mean the direction of the air flow when the vacuum cleaner is switched on. The direction of travel is essentially directed from the electrically conductive air inlet of the vacuum cleaner toward the air outlet of the vacuum cleaner. To generate the air flow, an electric motor is advantageously used, which is designed to drive at least one fan unit. The fan unit can be designed, for example, as a radial or axial fan.

[0012] A "cyclone chamber" is understood, in particular, to be a region of the vacuum cleaner in which substance and / or fluid particles are separated from the air stream via a centrifugal separation mechanism. Advantageously, the air stream is directed tangentially into the cyclone chamber, at least in some areas. Preferably, the air stream is guided along a circular path within the cyclone chamber, at least in some areas. The collection container at least partially encloses the cyclone chamber, so that the circular path of the air stream is maintained within the collection container.

[0013] The suction device has the charge conducting device. The housing can at least partially accommodate the charge conducting device. The charge conducting device is designed to be electrically conductive, so that it can absorb the electrical charge within the cyclone chamber. The charge conducting device is designed such that it can conduct the electrical charge out of the cyclone chamber. This allows the cyclone chamber to be electrostatically discharged.

[0014] In one embodiment of the suction device, the suction device has a filter element for filtering the air flow within the cyclone chamber and the charge guiding device is arranged at least partially in the cyclone chamber such that the charge guiding device is arranged in the radial direction to a housing axis between the filter element and the collecting container.

[0015] The air flow enters the collection container from the electrically conductive air inlet and exits the housing via the air outlet via the filter element. The filter element is arranged in the cyclone chamber and is connected to the housing, in particular detachably. The filter element is advantageously designed to filter substance and / or fluid particles as they exit the cyclone chamber. For this purpose, the air flow within the cyclone chamber is guided, at least in some areas, on a circular path around the filter element. In particular, the cyclone chamber is at least partially delimited by the filter element. The cyclone chamber is preferably designed, at least in sections, as a hollow cylinder, wherein in particular the outer diameter of the hollow cylinder is formed by the collection container and the inner diameter of the hollow cylinder is formed by the filter element. The filter element can, for example, be designed as a pleated filter.In particular, the outer surface of the pleated filter corresponds to at least twice the outer surface of the pleated filter. The filter element is connected, in particular detachably, to the housing. The connection between the filter element and the housing can be a screw connection, a clamp connection, a snap connection, a hook connection, or a bayonet connection. For example, the bayonet connection can provide both an easy-to-use and secure connection between the filter element and the housing of the vacuum cleaner.

[0016] In at least one operating state of the suction device, the charge-guiding device is arranged at least partially within the cyclone chamber. In this operating state, the collecting container can be connected to the housing. The charge-guiding device is arranged in the radial direction relative to the housing axis between the filter element and the collecting container. The housing of the suction device is essentially cylindrical, so that at least one longitudinal axis of the housing represents the housing axis. The charge-guiding device is arranged between the filter element and the collecting container in the radial direction away from the housing axis.

[0017] In one embodiment of the suction device, the charge conducting device is electrically connected to the electrically conductive air inlet for conducting the electrical charge. The charge conducting device is electrically connected to the electrically conductive air inlet in such a way that the charge conducting device can transmit the electrical charge to the electrically conductive air inlet. For this purpose, the charge conducting device can rest against the electrically conductive air inlet, be supported on the electrically conductive air inlet, or be connected to the electrically conductive air inlet, in particular detachably. In this case, the charge conducting device can be detachably connectable to the electrically conductive air inlet. It is conceivable for the charge conducting device to be connected to the electrically conductive air inlet by means of a snap connection, a locking connection, a bayonet connection, a screw connection, a clamp connection, or a hook connection.

[0018] In one embodiment of the suction device, the electrically conductive air inlet is electrically connected to the electrically conductive suction hose. The electrically conductive air inlet is electrically connected to the electrically conductive suction hose in such a way that the electrically conductive air inlet can transfer the electrical charge to the electrically conductive suction hose. As a result, the electrically conductive air inlet can be electrically and mechanically connected to the electrically conductive suction hose. The electrically conductive suction hose can release the electrical charge upon contact with the substrate. This can electrostatically discharge the cyclone chamber. It is conceivable that the electrically conductive air inlet is connected to the electrically conductive suction hose indirectly, for example by means of an electrically conductive connecting element.

[0019] In one embodiment of the vacuum cleaner, the charge-conducting device comprises at least one charge-absorbing element for absorbing the electrical charge. The charge-absorbing element is arranged on the housing and extends into the cyclone chamber. The charge-absorbing element is designed such that it can absorb the electrical charge within the cyclone chamber when the cyclone chamber becomes electrostatically charged. For this purpose, the charge-absorbing element is designed to be electrically conductive. It is conceivable for the charge-absorbing element to be formed from a metallic material.

[0020] The charge-receiving element is arranged on the housing and can form a positive, non-positive, and / or material connection with the housing. The charge-receiving element can be connected to the housing by means of a fastening element, such as a screw. The charge-receiving element protrudes into the cyclone chamber. The air flow within the cyclone chamber can flow around the charge-receiving element. It is conceivable for the charge-receiving element to rest against the collecting container. It is possible for the charge-receiving element and the housing to be formed as a single piece.

[0021] In one embodiment of the suction device, the charge-absorbing element is rod-shaped. The charge-absorbing element can be designed in the form of a bar, a rod, or a pin. It is also conceivable for the charge-absorbing element to be strip-like or spiral-shaped.

[0022] In one embodiment of the suction device, the charge-absorbing element is designed to be detachably connected to the housing. The charge-absorbing element can form a snap, screw, latch, bayonet, or hook connection with the housing. The charge-absorbing element can have a connecting element for the housing, and the housing can have a receiving element for the connecting element of the charge-absorbing element, wherein the connecting element detachably connects the receiving element to the housing. It is conceivable for the charge-absorbing element to be electrically conductively connected to the housing.

[0023] In one embodiment of the suction device, the charge conducting device has a plurality of charge-absorbing elements, wherein the plurality of charge-absorbing elements are connected to one another by means of a connecting element. The plurality of charge-absorbing elements can range from 2 to 20, in particular from 2 to 15. The connecting element is designed such that it can receive and connect the plurality of charge-absorbing elements. The connecting element can connect the plurality of charge-absorbing elements in a force-fitting, form-fitting, and / or material-fitting manner. A clamping connection, a snap-in connection, a locking connection, or a bayonet connection is conceivable for connecting the connecting element to the plurality of charge-absorbing elements. It is also possible for the connecting element to be formed integrally with the plurality of charge-absorbing elements.The connecting element can preferably arrange the plurality of charge-absorbing elements in the circumferential direction relative to the housing axis. The connecting element can be designed in the manner of a ring or a crown.

[0024] The connecting element is additionally designed to connect the plurality of charge-absorbing elements to the housing. In this case, the connecting element can connect the plurality of charge-absorbing elements to the housing detachably or essentially permanently. The connecting element can connect the plurality of charge-absorbing elements to the housing in a force-fitting, form-fitting and / or material-fitting manner. The connecting element can have a receiving element for receiving at least the fastening element. The plurality of charge-absorbing elements can be connected to the housing by means of the fastening element and the receiving element. For example, the receiving element can be designed as a receiving opening and the fastening element can be designed as a screw. In this case, the screw can then connect the connecting element to the housing by means of the receiving opening.It is also conceivable for the connecting element to have at least one retaining element for connecting the plurality of charge-absorbing elements to the housing. For example, the retaining element can be designed as a snap-in hook. It is also possible for the connecting element to be designed as a clamping ring for connecting the plurality of charge-absorbing elements to the housing by means of a clamping connection.

[0025] In one embodiment, the majority of charge-absorbing elements are arranged at an angular distance from one another in a range of 10° to 120°, in particular 15° to 100°, and most particularly 20° to 90°. The angular distance in a range of 25° to 40° is also conceivable. The charge-absorbing elements are preferably arranged uniformly in the circumferential direction relative to the housing axis.

[0026] In one embodiment, the majority of charge-absorbing elements are arranged substantially in the shape of a cylinder jacket. The majority of charge-absorbing elements are arranged on the connecting element such that the majority of charge-absorbing elements form a type of cylinder jacket. The cylinder jacket has a pen diameter in the range of 200 mm to 340 mm, in particular 220 mm to 320 mm, very particularly 240 mm to 300 mm. Furthermore, the cylinder jacket has a cylinder height in the range of 100 mm to 210 mm, in particular 120 mm to 190 mm, very particularly 140 mm to 170 mm. The cylinder height can be an axial distance in the axial direction relative to the housing axis.

[0027] It is conceivable that the charge-receiving element is designed additionally for positioning a collecting element within the cyclone chamber, in particular on the collecting container. "Positioning" here means arranging it in a, in particular, predetermined, position. It is also possible for the charge-receiving element to center the collecting element within the cyclone chamber, in particular the collecting container. The collecting element can be made of a flexible material, such as a plastic film or a paper bag. In particular, the collecting element can be designed, for example, as a collecting bag, in particular a dust collection bag, or as a disposal bag. It is also conceivable for the collecting element to be designed as a collecting bucket.

[0028] In one embodiment of the suction device, the charge conducting device comprises at least one charge conducting element for conducting the electrical charge, wherein the charge conducting element is designed to electrically connect the charge receiving element to the electrically conductive air inlet. The charge conducting element is designed to conduct the electrical charge. The charge conducting element can comprise an electrically conductive material or can be made of an electrically conductive material. The charge conducting element can conduct the electrical charge from the charge receiving element to the electrically conductive air inlet.

[0029] The charge conducting element can be arranged substantially within the housing. Furthermore, the charge conducting element can be arranged substantially between the charge absorption element and the electrically conductive air inlet. The charge conducting element can be arranged between the filter element and the collecting container in the radial direction of the housing axis. Furthermore, the charge conducting element can establish a mechanical connection between the charge absorption element and the electrically conductive air inlet, wherein the charge absorption element can be mechanically connected to the electrically conductive air inlet. It is conceivable for the charge conducting element to form the mechanical connection between the charge absorption element and the electrically conductive air inlet in the form of a positive, non-positive, and / or material-fit connection.

[0030] In one embodiment, the charge-absorbing element and the charge-conducting element are formed as a single piece. The charge-absorbing element can transmit the electrical charge directly and immediately to the electrically conductive air inlet.

[0031] In one embodiment, the electrically conductive air inlet and the charge conducting element are formed as a single piece. This allows the charge conducting element to transmit the electrical charge directly and immediately to the electrically conductive air inlet.

[0032] In one embodiment of the suction device, the charge conducting element has at least one connecting element for the electrically conductive air inlet, and the electrically conductive air inlet has at least one receiving element for the charge conducting element, wherein the connecting element and the receiving element interact in such a way that the connecting element forms an electrically conductive connection with the receiving element. For this purpose, the connecting element for the electrically conductive air inlet can comprise at least one electrically conductive element or can be at least partially made of an electrically conductive material. The connecting element for the electrically conductive air inlet can be hook-shaped, curved, spiral-shaped, screw-shaped, pin-shaped, or shaped like a projection. The receiving element for the charge conducting element is shaped in such a way that it can form the electrically conductive connection with the charge conducting element.The receiving element for the charge conducting element can comprise at least one electrically conductive element or be made of an electrically conductive material. The receiving element for the charge conducting element can be designed in the manner of an edge, a collar, a projection, an opening, a thread, a recess, or an undercut. The connecting element for the electrically conductive air inlet and the receiving element for the charge conducting element can additionally form a mechanical connection. In this case, the connecting element for the electrically conductive air inlet and the receiving element for the charge conducting element can form a positive, non-positive, and / or materially bonded connection.It is also conceivable that the connecting element for the electrically conductive air inlet rests on the receiving element for the charge conducting element, rests against the receiving element for the charge conducting element, or is soldered to the receiving element for the charge conducting element. It is also possible for the connecting element for the electrically conductive air inlet and the receiving element for the charge conducting element to be detachably connected to one another.

[0033] In an alternative embodiment, the electrically conductive air inlet has at least one connecting element for the charge conducting element and the charge conducting element has at least one receiving element for the electrically conductive air inlet, wherein the connecting element and the receiving element interact in such a way that the connecting element forms an electrically conductive connection with the receiving element.

[0034] In one embodiment of the suction device, the charge conducting element has at least one connecting element for the housing, and the housing has at least one receiving element for the charge conducting element, wherein the connecting element and the receiving element interact in such a way that the connecting element forms a mechanical connection, in particular a detachable one, with the receiving element. The connecting element for the housing can form a positive, non-positive, and / or materially connected connection with the receiving element for the charge conducting element. The connecting element for the housing and the receiving element for the charge conducting element can form a snap-in, hook-in, latch-in, screw-in, or tongue-and-groove connection. The connecting element for the housing can be designed in the manner of at least one edge, a collar, a projection, a web, a screw, a nut, a thread, or the like.The receiving element for the charge-conducting element can be designed in the form of at least one opening, an eyelet, a recess, an undercut, a thread, a web, a frame, a rail, a groove, or the like. It is conceivable that the connecting element for the housing and the receiving element for the charge-conducting element additionally form an electrically conductive connection. This allows the connecting element for the housing to transmit the electrical charge to the receiving element for the charge-conducting element.

[0035] In an alternative embodiment, the housing has at least one connecting element for the charge conducting element and the charge conducting element has at least one receiving element for the housing, wherein the connecting element and the receiving element interact in such a way that the connecting element forms a, in particular detachable, mechanical connection with the receiving element.

[0036] In one embodiment of the suction device, the charge-guiding element is designed like a leaf spring. The charge-guiding element can be elastically deformable. The charge-guiding element can be L-shaped, C-shaped, S-shaped, T-shaped, or similar.

[0037] In one embodiment, the charge conducting device has a plurality of charge conducting elements, wherein the plurality of charge conducting elements are connected to one another by means of a connecting element. The plurality of charge conducting elements can be in a range from 2 to 20, in particular 2 to 15. The connecting element for the plurality of charge conducting elements is designed such that it can accommodate and connect the plurality of charge conducting elements. The connecting element can connect the plurality of charge conducting elements in a force-fitting, form-fitting, and / or material-fitting manner. The connecting element can preferably arrange the plurality of charge conducting elements in the circumferential direction relative to the housing axis. The connecting element for the plurality of charge conducting elements can be designed in the manner of a ring.

[0038] In one embodiment of the suction device, the charge-conducting element has at least one receiving element for the charge-conducting element, and the charge-conducting element has at least one connecting element for the charge-conducting element, wherein the connecting element and the receiving element interact in such a way that the connecting element forms an electrically conductive connection with the receiving element. For this purpose, the receiving element for the charge-conducting element can comprise at least one electrically conductive element or can be at least partially made of an electrically conductive material. The receiving element for the charge-conducting element can be hook-shaped, leaf-shaped, arc-shaped, spiral-shaped, helical, pin-shaped, in the manner of a projection, as an opening, or as a recess. The connecting element for the charge-conducting element is shaped in such a way that it can form the electrically conductive connection with the charge-conducting element.The connecting element for the charge-conducting element can comprise at least one electrically conductive element or be made of an electrically conductive material. The connecting element for the charge-conducting element can be designed in the manner of a pin, an edge, a collar, a projection, an opening, an eyelet, a thread, a recess, or an undercut. The connecting element for the charge-conducting element and the receiving element for the charge-receiving element can additionally form a mechanical connection. In this case, the connecting element for the charge-conducting element and the receiving element for the charge-receiving element can form a positive, non-positive, and / or materially bonded connection.It is also conceivable that the connecting element for the charge-conducting element rests on the receiving element for the charge-absorbing element, rests against the receiving element for the charge-absorbing element, or is soldered to the receiving element for the charge-absorbing element. It is also possible for the connecting element for the charge-conducting element and the receiving element for the charge-absorbing element to be detachably connected to one another.

[0039] In an alternative embodiment, the charge receiving element has at least one receiving element for the charge conducting element and the charge conducting element has at least one connecting element for the charge receiving element, wherein the connecting element and the receiving element interact in such a way that the connecting element forms an electrically conductive connection with the receiving element.

[0040] In one embodiment of the suction device, the charge conducting device has a further charge conducting element, wherein the further charge conducting element is electrically connected to the electric motor, in particular an electric motor housing, and the electrically conductive air inlet. The further charge conducting element can comprise at least one electrically conductive element or be made of an electrically conductive material. The further charge conducting element electrically connects the electric motor, in particular the electric motor housing, to the electrically conductive air inlet such that the electrical charge is passed on from the electric motor, in particular the electric motor housing, to the electrically conductive air inlet. The further charge conducting element can additionally mechanically connect the electric motor, in particular the electric motor housing, to the electrically conductive air inlet.The further charge-conducting element can be designed in the form of an electrical line, a wire, a web or the like.

[0041] In one embodiment, the charge conducting element and the additional charge conducting element are formed integrally. This allows the charge conducting element and the additional charge conducting element to transmit the electrical charge from the cyclone chamber and from the electric motor, in particular the electric motor housing, to the electrically conductive air inlet.

[0042] In addition, a charge guiding device as described above is proposed for a suction device as described above.

[0043] The vacuum cleaner is preferably a battery-operated vacuum cleaner that can be operated using at least one battery, in particular a handheld power tool battery pack. This then provides the energy, for example, for the electric motor, through the at least one vacuum cleaner power supply unit using the at least one battery. Within the context of the present invention, a "handheld power tool battery pack" is understood to mean a combination of at least one battery cell and a battery pack housing. The handheld power tool battery pack is advantageously designed to supply energy to commercially available battery-operated handheld power tools. The at least one battery cell can, for example, be a Li-ion battery cell with a nominal voltage of 3.6 V.For example, the handheld power tool battery pack comprises at least five battery cells and a total rated operating voltage of 18 V to enable performance-appropriate operation of the vacuum cleaner.

[0044] Furthermore, the housing can have at least one vacuum cleaner operating unit and at least one vacuum cleaner holding unit. The vacuum cleaner operating unit comprises at least one vacuum cleaner operating element, which is designed to be operated by a user and to generate switching signals. The switching signals then control the electric motor. The at least one vacuum cleaner operating element can be arranged on one side of the housing. Vacuum cleaner operating elements can be, for example, a main switch or a setting switch. The main switch is provided to switch the electric motor on and off or to switch to an autostart function. The setting switch is designed to adjust a suction power of the vacuum cleaner. The at least one vacuum cleaner operating element is an operating element of the vacuum cleaner, in particular an operating element as described above.

[0045] The suction device holding unit comprises at least one suction device holding element, for example a suction device handle, with which the user can hold the suction device. In addition, at least one suction device movement unit can be attached to the housing and / or the collecting container, so that the suction device is expediently a mobile suction device. The at least one suction device movement unit is designed as at least one roller, at least one wheel or the like so that it can be moved on a surface. Preferably, the mobile suction device is designed as a portable suction device which has rollers, wheels or the like or does not have rollers, wheels or the like. Within the scope of the present invention, the user can take the suction device with them and use it directly at a desired location. Short description of the drawings

[0046] The invention is explained below using a preferred embodiment. The drawings show: Fig. 1 a perspective view of a suction device according to the invention; Fig. 2 a longitudinal section through the suction device with a charge guide device; Fig. 3a a perspective view of the charge conducting device and an electrically conductive air inlet; Fig. 3b a perspective view of a charge-guiding element; Fig. 4a a cross-section through the suction device with the charge guide element; Fig. 4b a section of the cross-section through the suction device with the charge guide element; Fig. 5 an alternative cross-section through the suction device with an additional charge guide element; Fig. 6 a second perspective view of the charge conducting device and the electrically conductive air inlet; Fig. 7a a plan view of a section of the charge guiding device; Fig. 7b a plan view of a section of a connecting element for a housing of the suction device and a connecting element for a charge receiving element of the charge conducting device; Fig. 7c a perspective view of a section of the charge receiving element; Description of the embodiment

[0047] In Fig. 1 A perspective view of a suction device 100 according to the invention is shown. The suction device 100 is designed as a centrifugal separator. The suction device 100 has a housing 102, which is detachably connected to a collecting container 104 and a filter element 106, see also Fig. 2 , is connected. The suction device 100 is essentially cylindrical in shape and extends along a longitudinal axis, which represents a housing axis 110. The suction device 100 has a cyclone chamber 120, see also Fig. 2 , which in the connected state is at least partially delimited axially by the housing 102 and the collecting container 104 and radially by the collecting container 104 and the filter element 106. The collecting container 104 is advantageously designed to be at least partially transparent. The detachable connection of the housing 102 to the collecting container 104 is effected via at least one locking element 138. The locking element 138 is arranged on the housing 102. The locking element 138 is movably connected to the housing 102. The locking element 138 is designed for the force-fitting and form-fitting connection of the housing 102 to the collecting container 104. Here, the housing 102 has two locking elements 138, which are arranged opposite one another on the housing 102, see Fig. 2 .

[0048] A suction device holding element 112 is arranged on an upper side of the housing 102. The suction device holding element 112 is fastened to the upper side of the housing 102. The suction device holding element 112 is designed as a carrying handle and has a gripping area 114. The gripping area 114 is designed to be enclosed by a hand of a user of the suction device 100. The suction device holding element 112 allows the suction device 100 to be advantageously carried during use or for transport. A suction device movement unit 134 is attached to the housing 102. As a result, the suction device 100 is designed as a mobile suction device. The suction device movement unit 134 has at least one suction device movement element 136. By way of example, the suction device movement unit 134 has five suction device movement elements 136, wherein the suction device movement elements 136 are designed as rollers, for example, wherein only four suction device movement elements 136 are visible.The vacuum cleaner 100 further comprises a vacuum cleaner operating unit 130 with at least one vacuum cleaner operating element 132. The vacuum cleaner operating element 132 is designed to be operated by the user and to generate switching signals. The switching signals then control a vacuum cleaner drive 140. The vacuum cleaner drive 140 has an electric motor 142 and at least one control unit. The control unit is not shown in detail here. The vacuum cleaner operating element 132 can be arranged on one side of the housing 102. Here, the vacuum cleaner operating element 132 is designed, for example, as a main switch for switching the vacuum cleaner 100 on and off.

[0049] With the help of the electric motor 142, at least one air flow 150 is generated in the cyclone chamber 120, see also Fig. 2 The electric motor 142 drives at least one fan unit to generate the air flow 150. The fan unit is not shown in detail here and can be designed, for example, as a radial or axial fan. For this purpose, the electric motor 142 is supplied with electrical energy by a vacuum cleaner power supply unit 144. The vacuum cleaner 100 is preferably a battery-operated vacuum cleaner, so that the vacuum cleaner power supply unit 144 has at least one battery. The battery is advantageously designed as a handheld power tool battery pack. This enables the vacuum cleaner power supply unit 144 to provide the electrical energy for the electric motor 142.

[0050] The suction device 100 also includes an electrically conductive suction hose 101. The electrically conductive suction hose 101 is detachably connectable to the housing. The electrically conductive suction hose 101 is designed such that it can discharge electrostatically as soon as the electrically conductive suction hose 101 touches a surface. To allow the air flow 150 to be guided into the housing 102 via the electrically conductive suction hose 101, the housing 102 has an electrically conductive air inlet 152, see also Fig. 2 The electrically conductive air inlet 152 is also designed to conduct electrical charge. The electrically conductive air inlet 152 conducts electrical charge to the electrically conductive suction hose 101 as soon as the electrical charge is applied to the electrically conductive air inlet 152. In this embodiment, the electrically conductive air inlet 152 is made of an electrically conductive material.

[0051] Furthermore, the housing 102 comprises an air outlet 154 through which the air flow 150 can leave the housing 102. For example, the electrically conductive air inlet 152 and the air outlet 154 of the suction device 100 can be arranged on opposite sides of the housing 102. The suction device 100 is designed to collect and separate material particles and / or liquids from the air flow 150. The air flow 150 is generated by the electric motor 142. The electrically conductive air inlet 152 allows the air flow 150 to enter the housing 102. The air flow 150 is guided into the collection container 104 by means of a first air duct 156, see also Fig. 2 The collection container 104 collects the particles and / or liquids. As described above, the collection container 104 is detachably connected to the housing 102 of the suction device 100. The air flow 150 is directed over the filter element 106, see also Fig. 2 . Furthermore, the air flow 150 is guided out of the housing 102 via a second air duct via the air outlet 154. The second air duct is not shown in detail here. The cyclone chamber 120 accommodates the filter element 106, so that the filter element 106 is arranged in the cyclone chamber 120 in the connected state. Furthermore, the filter element 106 is detachably connected to the housing 102. For example, the filter element 106 can be detachably connected to the housing 102 of the suction device 100 via a bayonet connection. The filter element 106 at least partially delimits the cyclone chamber 120. For example, the filter element 106 is formed as a pleated filter.

[0052] In the cyclone chamber 120, the substance and / or fluid particles are separated from the air stream 150 via a centrifugal separation mechanism. In this embodiment, the air stream 150 is guided tangentially into the cyclone chamber 120, at least in some areas. Subsequently, the air stream 150 is guided along a circular path within the cyclone chamber 120, at least in some areas. In this circular path, the air stream 150 is guided around the filter element 106 within the cyclone chamber 120. Here, the cyclone chamber 120 is shaped, at least in sections, as a hollow cylinder. An outer diameter of the hollow cylinder is formed by the collecting container 104, and an inner diameter of the hollow cylinder is formed by the filter element 106.

[0053] The suction device 100 also includes a charge conducting device 200. The charge conducting device 200 is arranged at least partially within the cyclone chamber 120 and is designed to absorb electrical charge within the cyclone chamber 120. The housing 102 at least partially accommodates the charge conducting device 200. The charge conducting device 200 is designed to be electrically conductive. The charge conducting device 200 can absorb the electrical charge within the cyclone chamber 120 and conduct it out of the cyclone chamber 120.

[0054] The charge conducting device 200 is electrically connected to the electrically conductive air inlet 152 for conducting the electrical charge, see also Fig. 2 and 4. As soon as the electrical charge is applied to the charge conducting device 200, it transfers the electrical charge to the electrically conductive air inlet 152. In this embodiment, the charge conducting device 200 is applied to the electrically conductive air inlet 152, see Fig. 2 and 4 The electrically conductive air inlet 152 is electrically connected to the electrically conductive suction hose 101. The electrically conductive air inlet 152 transmits the electrical charge to the electrically conductive suction hose 101.

[0055] In Fig. 2 A longitudinal section through the suction device 100 with the charge guide device 200 is shown. As described above, the filter element 106 for filtering the air flow 150 is arranged within the cyclone chamber 120. The charge guide device 200 is arranged at least partially within the cyclone chamber 120. In this embodiment, the charge guide device 200 is arranged between the filter element 106 and the collecting container 104 in the radial direction 210 relative to the housing axis 110.

[0056] The charge conducting device 200 comprises a charge receiving element 210 for receiving the electrical charge. The charge receiving element 210 is arranged on the housing 102 and extends into the cyclone chamber 120. The charge receiving element 210 is electrically conductive. Here, the charge receiving element 210 is shaped like a rod. Furthermore, the charge receiving element 210 is designed to be detachably connectable to the housing 102. The charge receiving element 210 comprises a connecting element 212 for the housing 102. The connecting element 212 is designed as a connecting ring. The housing 102 comprises a receiving element 103 for the connecting element 212 of the charge-absorbing element 210. The connecting element 212 releasably connects the receiving element 103 to the housing 102 by means of a snap connection. Here, the charge-conducting device 200 comprises a plurality of charge-absorbing elements 210.The majority of charge-absorbing elements 210 are connected to one another by means of a connecting element 216. In this embodiment, the connecting element 212 for the housing 102 and the connecting element 216 for the majority of charge-absorbing elements 210 are formed in one piece. The plurality of charge-absorbing elements 210 is provided in a range from 2 to 20. The connecting element 212 receives the plurality of charge-absorbing elements 210 and connects them by means of a clamping connection. The connecting element 212 arranges the plurality of charge-absorbing elements 210 in the circumferential direction 300 relative to the housing axis 110. In addition, the connecting element 212 arranges the plurality of charge-absorbing elements 210 at an angular distance from one another in a range of 10° to 120°.

[0057] Fig. 3a shows a perspective view of the charge conducting device 200 and the electrically conductive air inlet 152. The charge conducting device 200 comprises a charge conducting element 220 for conducting the electrical charge, see also Fig. 3b The charge conducting element 220 is formed for the electrically conductive connection of the charge receiving element 210 to the electrically conductive air inlet 152. Here, the charge conducting element 220 is arranged substantially within the housing 102. The charge conducting element 220 is arranged substantially between the charge receiving element 210 and the electrically conductive air inlet 152.

[0058] The charge conducting element 220 comprises a connecting element 222 for the electrically conductive air inlet 152. The electrically conductive air inlet 152 comprises a receiving element 153 for the charge conducting element 220. The connecting element 222 and the receiving element 153 interact in such a way that the connecting element 222 forms an electrically conductive connection with the receiving element 153. The connecting element 222 for the electrically conductive air inlet 152 is partially made of an electrically conductive material and is hook-shaped, see also Fig. 3b The receiving element 153 for the charge conducting element 220 is designed as an exception. The connecting element 222 for the electrically conductive air inlet 152 rests against the receiving element 153 for the charge conducting element 220.

[0059] Furthermore, the charge conducting element 220 comprises a receiving element 226 for the charge receiving element 210. The charge receiving element 210 comprises a connecting element 214 for the charge conducting element 220. The connecting element 214 and the receiving element 226 interact in such a way that the connecting element 214 forms an electrically conductive connection with the receiving element 226. The receiving element 226 for the charge receiving element 210 is sheet-shaped here, see also Fig. 3b The connecting element 214 for the charge-conducting element 220 is shaped like a pin. The connecting element 214 for the charge-conducting element 220 rests here against the receiving element 226 for the charge-receiving element 210.

[0060] Fig 3b shows a perspective view of the charge guiding element 220. Here, the charge guiding element 220 is designed in the manner of a leaf spring and is L-shaped.

[0061] Fig. 4a shows a cross section through the suction device 100 with the charge conducting element 220. The charge conducting element 220 comprises a connecting element 224 for the housing 102, see also Fig. 3b and Fig. 4b . The housing 102 comprises a receiving element 105 for the charge conducting element 220, see also Fig. 4b The connecting element 224 and the receiving element 105 interact in such a way that the connecting element 224 forms a mechanical connection with the receiving element 105 in the form of a positive connection. The connecting element 224 for the housing 102 is shaped like an edge. The receiving element 105 for the charge-conducting element 220 is shaped like a groove. Fig. 4b represents a section 400 of the cross section through the suction device 100 with the charge guide element 220.

[0062] Fig. 5 shows an alternative cross-section through the suction device 100 with an additional charge conducting element 228. In the alternative embodiment, the charge conducting device 200 additionally comprises the additional charge conducting element 228. The additional charge conducting element 228 is electrically connected to the electric motor and the electrically conductive air inlet 152. Here, the additional charge conducting element is formed in the form of an electrical line.

[0063] Fig. 6 shows a second perspective view of the charge conducting device 200 and the electrically conductive air inlet 152. Fig. 6 represents a tilted view compared to the Fig. 3a The charge conducting element 220 is arranged between the charge receiving element 210 and the air inlet 152. The charge conducting element 220 establishes the electrically conductive connection in such a way that the receiving element 226 for the charge receiving element 210 rests against the charge receiving element 210. It is conceivable that the receiving element 226 for the charge receiving element 210 and the charge receiving element 210 are connected to one another in a form-fitting and / or force-fitting manner.

[0064] Here, the connecting element 212 for the housing 102 and the connecting element 216 for the charge receiving element 210 have at least one receptacle 230, see also Fig. 7 . The charge receiving element 210 here comprises a plug-in element 240, see also Fig. 7 The plug-in element 240 and the receptacle 230 for the charge-receiving element 210 are designed to complement one another. The receptacle 230 for the charge-receiving element 210 and the plug-in element 240 are designed in the manner of a plug-coupling connection. The receptacle 230 for the charge-receiving element 210 is designed such that it can receive the plug-in element 240 at least in a form-fitting manner. Here, the receptacle 230 for the charge-receiving element 210 receives the plug-in element 240 in a force-fitting manner. A plurality of receptacles 230 for the charge-receiving element 210 and a plurality of plug-in elements 240 are provided. The plurality of receptacles 230 for the charge element 210 corresponds to the plurality of plug-in elements 240.

[0065] In Fig. 7a A top view of a section 500 of the charge conducting device 200 is shown. The plug-in element 240 and the charge-absorbing element 210 are connected to one another in a force-fitting manner. In addition, the plug-in element 240 is designed to be electrically conductive, so that the electrical charge is passed on from the charge-absorbing element 210 via the plug-in element 240. The receptacle 230 for the charge-absorbing element 240 is designed to be electrically conductive. The receptacle 230 for the charge-absorbing element 210 is integrally formed here with the connecting element 212 for the housing 102 and with the connecting element 216 for the charge-absorbing element 210. The receptacle 230 for the charge-absorbing element 210 is thus designed such that it can receive the electrical charge from the plug-in element 240 and pass it on to the connecting element 212 for the housing 102.

[0066] In Fig. 7b A top view of the cutout 500 of the connecting element 212 for the housing 102 is shown. The receptacle 230 for the charge-receiving element 210 is essentially cuboid-shaped. It is conceivable that the receptacle 230 for the charge-receiving element 210 is essentially cube-shaped, shaped like a cone, or shaped like a hollow cylinder. The receptacle 230 for the charge-receiving element 210 has a fixing element 232. The fixing element 232 is designed to receive and fix the charge-receiving element 210, in particular the plug-in element 240, at least in a form-fitting manner. The fixing element 232 essentially enables a play-free arrangement of the charge-receiving element 210, in particular the plug-in element 240, in the receptacle 240 of the charge-receiving element 210. The fixing element 232 is designed here as two fixing webs. The receptacle 230 for the load-receiving element 210 comprises a centering opening 234.The centering opening 234 is designed to center the charge-receiving element 210, in particular the plug-in element 240, relative to the connecting element 212 for the housing 102. The centering opening 234 is conical in shape, for example.

[0067] In Fig. 7c A perspective view of a section of the load-receiving element 210 is shown. The plug-in element 240 encloses the load-receiving element 210 at least partially and at least in sections, thus the plug-in element 240 forms a force-locking connection with the load-receiving element 210. The plug-in element 240 here has a positioning element 242. For example, each plug-in element 240 has eight positioning elements 242. The positioning element 242 is designed as a positioning web. The positioning element 242 is designed to position the plug-in element 240 within the receptacle 230 for the load-receiving element 210, see also Fig. 6 and 7a. In addition, the positioning element 242 can be designed to form a positive and / or non-positive connection with the receptacle 230 for the load-receiving element 210. The plug-in element 240 further comprises at least one insertion aid 244. Here, the plug-in element 240 has, for example, ten insertion aids 244. The insertion aid 244 is designed here, for example, as an insertion ramp. The insertion aid 244 is designed to facilitate assembly of the load-receiving element 210 in the receptacle 230 for the load-receiving element 210. Here, each positioning element 242 has an insertion aid 244. The plug-in element further comprises a centering element 246. The centering element 246 is designed here as a frustoconical plug. It is conceivable that the centering element 246 is designed in the manner of a cone. The centering element 246 and the centering opening 234 are complementary to each other.The centering opening 234 receives the centering element 246 at least in a form-fitting manner. The centering element 246 enables the load-receiving element 210 to be centered relative to the receptacle 230 for the load-receiving element 210. The plug-in element 240 comprises a respective securing web 248. The securing web 248 is designed to secure the plug-in element 240 within the receptacle 230 for the load-receiving element 210 by means of the fixing element 232. For this purpose, the securing web 248 is arranged between the fixing webs (see also ). Fig. 6 and 7a The securing web 248 terminates in one of the insertion aids 244. The positioning element 242, the insertion aid 244, the centering element 246, and the securing web 248 are formed integrally here. Furthermore, each load-receiving element 210 has, for example, a plug-in element 240.

Claims

1. Suction apparatus (100) having an electrically conductive suction hose (101), having a housing (102), wherein the electrically conductive suction hose (101) is designed such that it can be connected, in particular releasably, to the housing (102), having an electric motor (142) for generating an air flow (150), wherein the electrically conductive suction hose (101) is designed in such a way that the electrically conductive suction hose (101) directs the air flow (150) to the housing (102), and the housing (102) has an electrically conductive air inlet (152), via which the air flow (150) can enter the housing (102), and an air outlet (154), via which the air flow (150) can exit the housing (102), having a cyclone chamber (120), and having a collection container (104), wherein the collection container (104) is designed such that it can be releasably connected to the housing (102) and at least partially encloses the cyclone chamber (120), characterized in that the suction apparatus (100) has a charge-directing device (200) at least partially within the cyclone chamber (120) for receiving electrical charge within the cyclone chamber (120).

2. Suction apparatus (100) according to Claim 1, characterized in that, to direct the electrical charge, the charge-directing device (200) is electrically connected to the electrically conductive air inlet (152).

3. Suction apparatus (100) according to Claim 1 or 2, characterized in that the electrically conductive air inlet (152) is connected to the electrically conductive suction hose (101) in an electrically conducting manner.

4. Suction apparatus (100) according to one of Claims 1 to 3, characterized in that the suction apparatus (100) has a filter element (106) for filtering the air flow (150) within the cyclone chamber (120), and the charge-directing device (200) is arranged at least partially in the cyclone chamber (120) in such a way that the charge-directing device (200) is arranged between the filter element (106) and the collection container (104) in a radial direction (310) with respect to a housing axis (110).

5. Suction apparatus (100) according to one of Claims 1 to 4, characterized in that the charge-directing device (200) has at least one charge-receiving element (210) for receiving the electrical charge, wherein the charge-receiving element (210) is arranged on the housing (102) and protrudes into the cyclone chamber (120).

6. Suction apparatus (100) according to Claim 5, characterized in that the charge-receiving element (210) is rod-shaped.

7. Suction apparatus (100) according to Claim 5 or 6, characterized in that the charge-receiving element (210) is designed such that it can be releasably connected to the housing (102).

8. Suction apparatus (100) according to one of Claims 5 to 7, characterized in that the charge-directing device (200) has a plurality of charge-receiving elements (210), wherein the plurality of the charge-receiving elements (210) are connected to one another by means of a connecting element (216).

9. Suction apparatus (100) according to one of the preceding claims, characterized in that the charge-directing device (200) has at least one charge-directing element (220) for directing the electrical charge, wherein the charge-directing element (220) is designed to connect the charge-receiving element (210) to the electrically conductive air inlet (152) in an electrically conducting manner.

10. Suction apparatus (100) according to Claim 9, characterized in that the charge-directing element (220) has at least one connecting element (222) for the electrically conductive air inlet (152), and the electrically conductive air inlet (152) has at least one receiving element (153) for the charge-directing element (220), wherein the connecting element (222) and the receiving element (153) interact in such a way that the connecting element (222) forms an electrically conducting connection with the receiving element (153).

11. Suction apparatus (100) according to Claim 9 or 10, characterized in that the charge-directing element (220) has at least one connecting element (224) for the housing (102), and the housing (102) has at least one receiving element (105) for the charge-directing element (220), wherein the connecting element (224) and the receiving element (105) interact in such a way that the connecting element (224) forms an, in particular releasable, mechanical connection with the receiving element (105).

12. Suction apparatus (100) according to one of Claims 9 to 11, characterized in that the charge-directing element (220) is designed in the manner of a leaf spring.

13. Suction apparatus (100) according to at least one of the preceding claims, characterized in that the charge-directing element (220) has at least one receiving element (226) for the charge-receiving element (210), and the charge-receiving element (210) has at least one connecting element (214) for the charge-directing element (220), wherein the connecting element (214) and the receiving element (226) interact in such a way that the connecting element (214) forms an electrically conducting connection with the receiving element (226).

14. Suction apparatus (100) according to one of the preceding claims, characterized in that the charge-directing device (200) has a further charge-directing element (228), wherein the further charge-directing element (228) is connected to the electric motor (142), in particular an electric motor housing, and the electrically conductive air inlet (152) in an electrically conducting manner.