Handheld floor cleaning machine with suction wand retention device

Abstract

The invention describes a handheld floor cleaning machine for cleaning a floor surface, having a base on which a cleaning device is provided, which has at least one brush element which is driven and which is designed to engage with the floor surface to be cleaned on a cleaning plane and to support the base relative to the floor surface, and a handle which is pivotably held on the base, which extends away from the base, on which a spraying device is provided for applying a cleaning liquid to the floor surface to be cleaned, a suction head is held on the base by a holding device, and which is designed to collect a dirt liquid from the floor surface to be cleaned, the holding device having a first pivot arm which extends between a machine end and a free end, which is connected to the base by the machine end in such a way that it can pivot about a first pivot axis which extends parallel to the cleaning plane.

Description

Technical Field

[0001] This invention relates to a handheld floor cleaner for cleaning floor surfaces, comprising: a base, a cleaning device mounted on the base having at least one driven brush element designed to engage with the floor surface to be cleaned on a cleaning plane and designed to support the base relative to the floor surface; and an operating handle pivotally held on the base, the operating handle extending away from the base, wherein a spraying device is provided on the base for applying cleaning liquid to the floor surface to be cleaned, and wherein a suction nozzle is held on the base by a holding device and is designed to collect dirt from the floor surface to be cleaned. Background Technology

[0002] Such a floor cleaning machine is known from the prior art. In this case, a cleaning device with one or more driven brush elements is mounted on a base. These brush elements are designed to engage with the surface to be cleaned and remove dirt from it. An operating handle is pivotally mounted on the base, allowing the floor cleaning machine (generally supported by the brush elements on the surface to be cleaned) to be guided and the orientation of the base to be adjusted. A spraying device is also provided, which delivers cleaning fluid into the area of ​​the brush elements, thereby improving dirt removal. Furthermore, a suction head is directly hinged to the base, connected to a waste container in the base or operating handle. Using the suction head, the waste fluid can be collected from the surface to be cleaned by the negative pressure generated in the waste container by a suction device.

[0003] A problem with this type of floor cleaner is that the base is supported on the surface to be cleaned only by the driven brush elements, which makes the direction of the cleaner's movement prone to change, even due to variations in the contact strength between the brush elements and the surface. Therefore, it would be beneficial to install guide wheels on the base, which also rest on the surface. However, in this case, the vertical position of the guide wheels must be readjusted according to the wear of the brush elements, which is quite laborious, and the guide wheels should not be lifted off the surface due to the suction head's contact with the surface.

[0004] In addition, it must be ensured that the suction head is reliably placed on the surface to be cleaned, so as to reliably suck up the waste liquid. Furthermore, such a machine should be designed with a transport configuration in which the brush elements and suction head are not placed on the ground, but the machine can still move on the ground by means of wheels, so that the machine can be transported without the risk of damage to the brush elements and / or suction head during transport. Summary of the Invention

[0005] Therefore, based on the prior art, the object of the present invention is to provide a handheld floor cleaner of the type described at the beginning, wherein the guide wheel reliably abuts against the floor surface to be cleaned, and wherein it is independent of whether the suction head is reliably placed on the floor surface to be cleaned.

[0006] According to the present invention, this objective is achieved by a handheld floor cleaner for cleaning floor surfaces, the handheld floor cleaner comprising: a base on which a cleaning device is mounted, the cleaning device having at least one driven brush element designed to engage with the floor surface to be cleaned on a cleaning plane and designed to support the base relative to the floor surface; and an operating handle pivotally fixed to the base, the operating handle extending away from the base, wherein a spraying device is provided on the base for applying cleaning liquid to the floor surface to be cleaned, wherein a suction head is fixed to the base by a holding device and the suction head is designed to collect dirt from the floor surface to be cleaned, wherein... The holding device has a first pivot arm extending between a machine end and a free end, and the first pivot arm is connected to the base via the machine end in a manner capable of pivoting about a first pivot axis extending parallel to the cleaning plane. The holding device has a guide wheel mounted on the first pivot arm between the machine end and the free end. The holding device also has a second pivot arm extending between a proximal end and a distal end, and the second pivot arm is connected to the first pivot arm between the machine end and the free end in a manner capable of pivoting about a second pivot axis extending parallel to the first pivot axis. A suction nozzle is mounted at the distal end of the second pivot arm.

[0007] Therefore, in the floor cleaning machine according to the invention, one or more holding devices are provided at the base of the cleaning device equipped with brush elements (brush element support base). These holding devices firstly have a first pivot arm, and guide wheels are installed at a region of the first pivot arm farther from the base, wherein the pivot arm can pivot relative to the base. This achieves that the guide wheels are always placed on the floor surface to be cleaned, regardless of the height of the brush elements.

[0008] In a preferred embodiment, a preloading device may be provided to preload the first pivot arm, pressing the free end of the first pivot arm against the cleaning plane where the free end of the brush element is located. This presses the guide wheel against the surface to be cleaned. The preloading device may particularly include a spring arranged between the base and the first pivot arm.

[0009] Furthermore, according to the present invention, a second pivot arm is pivotally hinged to the first pivot arm of the one or more holding devices, and the second pivot arm holds the suction head. Due to the pivotability of the second pivot arm relative to the first pivot arm, the vertical position of the suction head relative to the guide wheel can be changed. Moreover, the pivotable second pivot arm of the one or more holding devices allows the suction head to pivot upwards away from the ground surface to a transport configuration, where the suction head is no longer placed on the ground surface, even when the guide wheel is placed on the surface to be cleaned. Subsequently, the floor cleaning machine can be moved across the ground surface by means of the guide wheel, without the suction head being placed on the ground surface and thus undamaged.

[0010] In a preferred embodiment, the suction nozzle is designed to have a suction nozzle base on which a front suction lip and a rear suction lip are mounted. The front and rear suction lips preferably extend parallel to each other away from the suction nozzle base and are spaced apart from each other, such that the suction lips and the suction nozzle base define a suction chamber. The suction lips are positioned such that their edges, furthest from the suction nozzle base, extend on a contact plane and are designed to rest on the surface to be cleaned. The distal end of a second pivot arm is mounted on the suction nozzle base. With this structure, when negative pressure is applied to the suction chamber (which can be connected to the waste container of a floor cleaner), waste can be reliably drained from the surface to be cleaned.

[0011] In a further preferred embodiment, the suction nozzle may have a guide element, such as a sliding element or a wheel, which is positioned on the surface to be cleaned and thereby fixes the vertical position of the suction nozzle relative to the surface and prevents the suction lip from having to support the entire load of the suction nozzle. Preferably, this guide element is centrally located on the suction nozzle.

[0012] Furthermore, preferably, a stop is provided on the first or second pivot arm, wherein the stop is designed to limit the pivoting movement of the first pivot arm relative to the second pivot arm away from the base. This prevents the suction head from pivoting downwards too far as to fall below the level defined by the placement plane of one or more guide wheels.

[0013] In another preferred embodiment, a locking assembly is provided, comprising a first locking element and a second locking element. The first locking element is connected to the base of the suction nozzle, and the second locking element is mounted on a base or a first pivoting arm. The first and second locking elements are designed and mounted such that they can be releasably engaged in a transport configuration in which the suction nozzle pivots away from the cleaning plane, thereby preventing the suction nozzle from pivoting toward the cleaning plane. In this way, when the suction nozzle pivots away from the ground surface, it is locked in this transport configuration to prevent it from pivoting back on its own. Particularly preferred, the first locking element can be designed as a lever movably mounted on the suction nozzle and preloaded into the locking configuration. When the suction nozzle is in the transport configuration and the first locking element is in the locking configuration, the first locking element engages with the second locking element, and the first locking element can be released from the second locking element by overcoming the preloaded movement. Such a mechanism is easy to operate.

[0014] Furthermore, preferably, the suction head can be pivoted to a transport configuration by pivoting the second pivot arm, in which the suction head pivots away from the cleaning plane, wherein the first pivot arm is pivotable relative to the base between a raised configuration and a lowered configuration. The free end is closer to the cleaning plane in the lowered configuration than in the raised configuration, wherein the first and second pivot arms are connected such that when the suction head pivots to the transport configuration due to the pivoting of the second pivot arm, the first pivot arm pivots to the raised configuration. Therefore, according to the invention, the movement of the second pivot arm is correlated with the movement of the first pivot arm, which ensures that when the pivoting of the second pivot arm places the suction head in the transport configuration, the first pivot arm is in the configuration closest to the base. When the suction head is in the transport configuration, this brings the suction head to its highest vertical configuration, thereby preventing the component located on the top side of the suction head from coming into contact with the brush element or the base. Furthermore, the guide wheel is then fixed in place and its vertical position cannot be changed during transport.

[0015] To achieve this, it is further preferred to include a connecting element, wherein the connecting element is pivotally connected to the base about a first axis extending parallel to the first pivot axis, wherein the connecting element is pivotable about a second axis extending parallel to the second pivot axis and is mounted on a second pivot arm on the side of the second pivot axis opposite to the suction head, and is capable of displacement within a limited displacement area, wherein the displacement area is designed such that when the suction head pivots toward the transport configuration, one end of the displacement area is reached first, and then the transport configuration is reached. Therefore, the function of the connecting element is that after reaching the end of the displacement area, further pivoting of the second pivot arm must always be associated with the pivoting of the first pivot arm. Thus, when the second pivot arm, and therefore the suction head, pivots toward the transport configuration, the first pivot arm also pivots, specifically, pivots to a pivot configuration closer to the base.

[0016] In another preferred embodiment, the operating handle is pivotally connected to the base via a gelenk, wherein a locking mechanism is adjustable between a locked position and a released position. When the locking mechanism is in the locked position, the operating handle is locked so that it cannot pivot relative to the base in the transport position, and when the locking mechanism is in the released position, the operating handle can pivot relative to the base. In this embodiment, the operating handle can be locked relative to the base in a configuration, preferably with the longitudinal axis of the operating handle extending perpendicularly to the cleaning plane. Subsequently, the base can be pivoted away from the ground surface by pivoting the operating handle, wherein this pivoting movement can be performed about guide wheels. This allows the floor cleaner to be tilted so that it can be subsequently pulled across the ground surface for transport using the guide wheels.

[0017] In a preferred embodiment, the handheld floor cleaner may include: a cleaning fluid container connected to a spraying device; a waste liquid container connected to a suction nozzle; and a suction device designed to apply negative pressure to the waste liquid container. Attached Figure Description

[0018] The invention will be described below with the aid of the accompanying drawings, which show only preferred embodiments, in which:

[0019] Figure 1 An embodiment of the handheld floor cleaner according to the present invention is shown in a perspective view.

[0020] Figure 2 It shows Figure 1 A perspective view of the rear section of the base of a floor cleaning machine, including the suction nozzle.

[0021] Figure 3 Shown from below Figure 1A perspective view of the rear section of the base of the floor cleaning machine.

[0022] Figure 4 A stereoscopic view shown from below Figure 1 The suction nozzle and base of the embodiment,

[0023] Figure 5 Shown in 3D Figure 1 The rear part of the base of the floor cleaning machine and the suction head, wherein the suction head is in the transport configuration, and

[0024] Figure 6 Showing a rearward pivot configuration Figure 1 Floor cleaning machine. Detailed Implementation

[0025] like Figure 1 As shown, an embodiment of the handheld floor cleaner 1 according to the invention has a base 3 designed to be guided on a floor surface 5 to be cleaned. In the preferred embodiment described herein, two cleaning devices 9 are provided on the base 3, each having a brush element 7 that performs tracked movement. The cleaning device 9 or brush element 7 moves parallel to the cleaning plane 11, with the free ends of the bristles of the brush element 7 arranged on the cleaning plane, and the brush element engaging the floor surface 5 to be cleaned on the cleaning plane. Furthermore, the cleaning device 9 has a spraying device, for example in the form of a nozzle, by which cleaning liquid can be applied to the floor surface 5 to be cleaned, wherein this is done in such a way that the cleaning liquid reaches the area where the brush element 7 contacts the floor surface 5 to be cleaned. In this case, the base 3 is supported on the floor surface 5 by the brush elements 7.

[0026] exist Figure 1 In particular, an operating handle 13 is pivotally mounted on the base 3. This operating handle has a handle for guiding the machine 1. The operating handle 13 and the base 3 are connected by a hinge 14, which is designed to have a locking mechanism that can be adjusted between a locked position and a released position. In the embodiment described herein, the transport position of the floor cleaning machine 1 is selected such that the operating handle 13 is arranged with its longitudinal axis 15 substantially perpendicular to the cleaning plane 11. That is, when the floor cleaning machine 1 is positioned on the floor surface 5 to be cleaned by the brush element 7, the operating handle 13 extends perpendicular to the floor surface 5 to be cleaned. In this transport position, the locking mechanism can be placed in the locked position, and the operating handle 13 is thus locked so that it cannot pivot relative to the base 3. When the locking mechanism is placed in the released position, the locking is released, and the operating handle 13 can pivot freely relative to the base 3 within a predetermined angular range.

[0027] In addition, Figure 1 As can be seen, a cleaning fluid container 17 and a waste liquid container 19 are fixedly held on the operating handle 13. The cleaning fluid container 17 is connected to the spraying device, so that cleaning fluid can be supplied from the cleaning fluid container 17 to the spraying device during the operation of the floor cleaning machine 1.

[0028] Furthermore, as can be seen in the figure, when viewed along the normal direction of movement 21, a suction head 23 is mounted at the rear end of the base 3 by means of (two in the preferred embodiment described herein) holding devices 25.

[0029] The suction nozzle 23 includes a suction nozzle base 27, a front suction lip 29, and a rear suction lip 31 extending generally parallel downwards away from the suction nozzle base. The suction lips 29 and 31 extend along the suction nozzle base 27, and the edges 33 of the suction lips 27 and 29 furthest from the suction nozzle base 27 are mounted on a common contact plane, allowing the edges 33 to be placed together on the surface 5 to be cleaned. In the embodiment described herein, the suction nozzle 23 also has guide elements in the form of two wheels 34, which are positioned on the surface 5 to be cleaned, thereby fixing the vertical position of the suction nozzle 23 relative to the surface 5 and preventing the entire load of the suction nozzle 23 from being supported on the surface 5 by the suction lips 29 and 31. The wheels 34 are centrally located on the suction nozzle 23. However, it should also be noted that, instead of the wheels 34, the guide elements can also be designed as sliding elements.

[0030] A suction chamber is formed between the suction lips 29 and 31 and the base 27 of the suction head. This suction chamber can be connected to the waste container 19 via an interface 35 and a suction line (not shown in the figure). The waste container 19 is then connected to a negative pressure source, allowing the suction line to apply negative pressure to the suction chamber and generate an airflow from the suction chamber to the waste container 19. In this way, wastewater on the floor surface 5 to be cleaned can be transported to the waste container 19.

[0031] In addition, especially in Figures 2 to 4 As can be seen, each of the holding devices 25 that holds the suction head 23 to the base 3 has a first pivot arm 37, which has (two in the embodiment described here) legs 39 connected to each other by a connecting section 41. The first pivot arm 37 extends between the machine end 43 and the free end 45, and is hinged to the base 3 via the machine end 43 in a manner that allows it to pivot about a first pivot axis 47. Here, the first pivot axis 47 extends parallel to the cleaning plane 11, on which the brush element 7 engages with the surface 5 to be cleaned.

[0032] For each of the holding devices 25, the guide wheel 49 is rotatably held between the legs 39 of the first pivot arm 37.

[0033] In addition, especially in Figure 3 As can be seen, each of the first pivot arms 37 has a second pivot arm 51 located away from the machine end 43. This second pivot arm extends between the proximal end 53 and the distal end 55, and is hinged to the first pivot arm 37 in a manner capable of pivoting about a second pivot axis 57. Here, the first and second pivot axes 47 and 57 extend parallel to each other and therefore parallel to the cleaning plane 11. The suction head base 27 is fixedly mounted at the distal end 55 of the second pivot arm 51. Furthermore, in... Figure 2 As can be seen, the second pivot arm 51 also has two legs 59, which are connected to each other by a connecting section 61, wherein guide wheels 49 are arranged between the legs 59.

[0034] Especially in Figure 3 and Figure 4 As can be seen, a stop 61 extending laterally away from the support leg 39 of the first pivot arm 37 is provided. The support leg 59 of the second pivot arm 51 can abut against the stop, thereby limiting the downward pivoting range of the second pivot arm 51 relative to the first pivot arm 37 by the stop 61.

[0035] The first pivot arm 37 can pivot around the first pivot axis 47 within a limited pivot range, wherein the pivot range is defined upward by the abutment surface 63 on the support leg 39, wherein the abutment surface 63 can abut against the protrusion 67 on the base 3.

[0036] In addition, Figure 3 And especially in Figure 4 As can be seen, one of the holding devices 25 has a preload element in the form of a spring 69, which is arranged between the connecting section 41 of the first pivot arm 37 and the base 3, thereby preloading the first pivot arm 37 and pressing the free end 45 of the first pivot arm against the clean surface 11. However, it is also possible for both holding devices 25 to have springs 69 installed in this manner.

[0037] In addition, Figure 2 and Figure 3As can be seen, one of the holding devices 25 also has a connecting element 71, which is hinged to the base 3 in a manner that allows it to pivot about a first axis 73. The end of the connecting element 71 furthest from the first axis 73 is connected to the second pivot arm 51 in a manner that allows it to pivot about a second axis 75, and is also movable relative to the second pivot arm 51 within a displacement region defined by the elongated hole 77, wherein the connecting element 71 is mounted on the second pivot arm 51 on the side of the second pivot axis 57 opposite to the suction head 23, i.e., mounted at the proximal end 53. The first axis and the second axis 73, 75 extend parallel to each other and parallel to the pivot axes 47, 57. Such a connecting element 71 may also be provided on both holding devices 25.

[0038] Finally, especially in Figure 2 As can be seen, a first locking element is provided on the base 27 of the suction head, which takes the form of a lever 79 pivotally mounted on the base 27 of the suction head. This lever is preloaded by a spring. Figure 2 The configuration shown makes it only possible to overcome... Figure 2 Only with the force of the configuration shown can it pivot to the right. When the suction head 23 is as... Figure 5 As shown, when pivoting upwards around the second pivot axis 57 to the transport configuration, the first locking element, in the form of a lever 79, can engage from the rear the section of the first pivot arm 37 that has a contact surface 63 and forms the second locking element after pivoting out overcoming the spring preload, thereby allowing the suction head 23 to... Figure 5 The transport configuration shown can be locked by engaging the locking element.

[0039] As the suction nozzle 23 pivots about the second pivot axis 57 toward the transport configuration, the bolt 81, received in the elongated hole 79 of the connecting element 71, shifts until it comes into contact with the end of the elongated hole 79 and thus reaches the end of the shifted area, in which the connecting element 71 can shift relative to the second pivot arm 51. This occurs before reaching the transport configuration. When the bolt 81 reaches the end of the elongated hole and the suction nozzle 23 or the second pivot arm 51 pivots further, this has the effect that, due to the connecting element 71, the first pivot arm 37 pivots upward away from the cleaning plane 7 against the action of the spring 69. This achieves the following: in the transport configuration, the first pivot arm 37 is in the pivot configuration closest to the base 3, thereby preventing the interface 35 on the suction nozzle base 27 from colliding with the base 3.

[0040] Furthermore, the connecting element 71 is used to prevent the first pivot arm 37 from pivoting downward away from the base 3 without restriction. This is because when the bolt 81 reaches the lower end of the elongated hole 79, the first pivot arm 73 cannot pivot further downward because the second pivot arm 51 is in contact with the stop 61.

[0041] With the holding device 25 designed according to the present invention, the floor cleaning machine 1 with suction head 23 can be operated in the following manner.

[0042] During normal cleaning operations, the suction head 23 is placed on the surface 5 to be cleaned to collect dirt from the surface, while the floor cleaner 1 is pushed by the user across the surface 5. At this time, the spring 69 ensures that the guide wheel 49 remains on the surface 5, regardless of the wear of the brush element 7 or the extent to which the brush element extends downwards away from the base 3. Because the guide wheel 49 reliably rests against the surface 5, the base 3 can move smoothly in a straight line along the direction of motion 21.

[0043] Furthermore, due to the pivotability of the second pivot arm 51, the suction head 23 can avoid obstacles in the vertical direction and also reliably adhere to the ground surface 5 to be cleaned, which is further ensured by the wheels 34.

[0044] When the user only wants to remove the liquid from the surface 5 to be cleaned, the user can use the locking mechanism to lock the operating lever 13 relative to the base 3. Figure 6 The configuration shown is then used to pivot the base 3 away from the surface 5 to be cleaned, wherein the pivoting motion is performed about the axis of rotation of the guide wheel 49.

[0045] Finally, it is also possible for the user to first pivot the suction head 23 to the transport configuration in the manner already described, where the suction head is locked due to the engagement of the lever 79 with another locking element, and then similarly pivot the base 3 away from the floor surface 5 to be cleaned while the operating handle 13 is locked. Thus, neither the brush element 7 nor the suction head 23 is placed on the floor surface, and the floor cleaning machine 1 can be transported without the risk of damage to these components.

[0046] List of reference numerals in the attached diagram:

[0047] 1 Cleaning machine

[0048] 3. Base

[0049] 5. Floor surface to be cleaned

[0050] 7 Brush Components

[0051] 9. Cleaning equipment

[0052] 11 Cleaning the surface

[0053] 13 Operating lever

[0054] 14 Live knots

[0055] 15. Longitudinal axis

[0056] 17. Cleaning solution container

[0057] 19 Dirty liquid container

[0058] 21. Direction of motion

[0059] 23. Suction head

[0060] 25 Holding device

[0061] 27. Suction head base

[0062] 29 Front lip sucking

[0063] 31. Lip sucking

[0064] 33. The edge of the lip sucking

[0065] 34 wheels

[0066] 35 Interface

[0067] 37 First pivot arm

[0068] 39. Support legs of the first pivot arm

[0069] 41 Connecting Section

[0070] 43 Machine end

[0071] 45 Free end

[0072] 47 First pivot axis

[0073] 49 guide wheels

[0074] 51 Second pivot arm

[0075] 53 Proximal end

[0076] 55 Distal end

[0077] 57 Second pivot axis

[0078] 59. Support legs of the second pivot arm

[0079] 61 Stop component

[0080] 63. Attach to the surface

[0081] 67. Protrusion

[0082] 69 Springs

[0083] 71 Connecting elements

[0084] 73 First Axis

[0085] 75 Second Axis

[0086] 77 long holes

[0087] 79 Lever

[0088] 81 bolts

Claims

1. A handheld floor cleaner (1) for cleaning a floor surface (5), the handheld floor cleaner comprising: a base (3) on which a cleaning device (9) is provided, the cleaning device having at least one driven brush element (7), the at least one brush element being designed to engage with the floor surface (5) to be cleaned on a cleaning plane (11) and being designed to support the base (3) relative to the floor surface (5); and An operating lever (13) is pivotally fixed to the base (3) and extends away from the base (3). in, A spraying device is provided on the base (3) for applying cleaning liquid to the ground surface (5) to be cleaned. The suction nozzle (23) is fixed to the base (3) by a holding device (25), and the suction nozzle is designed to collect sewage from the ground surface (5) to be cleaned. The holding device (25) has a first pivot arm (37) extending between the machine end (43) and the free end (45), and the first pivot arm is connected to the base (3) via the machine end (43) in a manner that allows it to pivot about a first pivot axis (47) extending parallel to the cleaning plane (11). The characteristic feature is that the holding device (25) has a guide wheel (49) mounted on the first pivot arm (37) between the machine end (43) and the free end (45). The holding device (25) has a second pivot arm (51) extending between a proximal end (53) and a distal end (55), and the second pivot arm is connected to the first pivot arm (37) between the machine end (43) and the free end (45) in a manner that allows it to pivot about a second pivot axis (57) extending parallel to the first pivot axis (47). The suction head (23) is installed at the distal end (55) of the second pivot arm (51).

2. The handheld floor cleaning machine according to claim 1, wherein, The suction nozzle (23) has a suction nozzle base (27), on which a front suction lip (29) and a rear suction lip (31) are mounted. The front and rear suction lips extend parallel to each other away from the suction nozzle base (27) and are spaced apart from each other, such that the suction lips (29, 31) and the suction nozzle base (27) define a suction chamber. Among them, these suction lips (29, 31) are positioned such that the edges (33) farther from the base (27) of the suction head extend on the contact plane and are designed to be placed on the surface (5) to be cleaned, and The distal end (55) of the second pivot arm (51) is mounted on the base (27) of the suction head.

3. The handheld floor cleaning machine according to claim 1 or 2, wherein, A preloading device is provided, which is designed to preload the first pivot arm (37) so as to press the free end (45) against the clean surface (11).

4. The handheld floor cleaning machine according to claim 3, wherein, A spring (69) is arranged between the base (3) and the first pivot arm (37).

5. The handheld floor cleaner according to any one of claims 1, 2, and 4, wherein, A stop (61) is provided on the first pivot arm or the second pivot arm (37, 51). The stop (61) is designed to restrict the pivoting movement of the second pivot arm (51) relative to the first pivot arm (37) away from the base (3).

6. The handheld floor cleaner according to claim 2, wherein, A locking assembly is provided, which has a first locking element and a second locking element. The first locking element is connected to the base (27) of the suction head, and the second locking element is mounted on the base (3) or the first pivot arm (37). The first locking element and the second locking element are designed and installed such that the first locking element and the second locking element can be releasably engaged in a transport configuration in which the suction head (23) pivots away from the cleaning plane (11), thereby preventing the suction head (23) from pivoting toward the cleaning plane (11).

7. The handheld floor cleaner according to claim 6, wherein, The first locking element is designed as a lever (79), which is movably mounted on the suction head (23) and preloaded into the locking configuration. When the suction nozzle (23) is in the transport configuration and the first locking element is in the locking configuration, the first locking element engages with the second locking element, and The first locking element can be released from the second locking element by overcoming the preloaded movement.

8. The handheld floor cleaner according to any one of claims 1, 2, 4, 6 and 7, wherein, By pivoting the second pivot arm (51), the suction nozzle (23) can be pivoted to a transport configuration in which the suction nozzle (23) pivots away from the cleaning plane (11). The first pivot arm (37) is capable of pivoting relative to the base (3) between a raised configuration and a lowered configuration. In this configuration, compared to the raised configuration, the free end is closer to the clean surface in the lowered configuration, and The first pivot arm and the second pivot arm (37, 51) are connected to each other such that when the suction head (23) pivots to the transport configuration due to the pivoting of the second pivot arm (51), the first pivot arm (37) pivots to the lifting configuration.

9. The handheld floor cleaner according to claim 8, wherein, It is equipped with a connecting element (71). The connecting element (71) is connected to the base (3) in a manner that allows it to pivot about a first axis (73) extending parallel to the first pivot axis (47). The connecting element (71) is pivotally mounted about a second axis (75) extending parallel to the second pivot axis (57) and is mounted on the second pivot arm (51) on the side of the second pivot axis (57) opposite to the suction head (23), and is capable of displacement within a limited displacement range. The displacement area is designed such that when the suction head (23) pivots toward the transport configuration, it first reaches one end of the displacement area and then reaches the transport configuration.

10. The handheld floor cleaner according to any one of claims 1, 2, 4, 6, 7 and 9, wherein, The operating handle (13) is pivotally connected to the base (3) via a hinge (14), and The locking mechanism is adjustable between a locked position and a released position. When the locking mechanism is in the locked position, the operating lever (13) is locked so that it cannot pivot relative to the base (3) in the transport position, and When the locking mechanism is in the released position, the operating lever can pivot relative to the base.

11. The handheld floor cleaner according to any one of claims 1, 2, 4, 6, 7 and 9, wherein, The handheld floor cleaner has: a cleaning fluid container (17) connected to the spraying device; Waste container (19), which is connected to the suction nozzle (23); as well as A pumping device is designed to apply negative pressure to the waste container (19).

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