Sweeping machine with height adjustment device

Abstract

The invention relates to a sweeping machine comprising a chassis (12), a rear wheel unit (20) and a front wheel unit (22), which are arranged on the chassis (12) and which define a contact plane (26) of the sweeping machine on a surface (24) to be cleaned, a pusher bracket (42) arranged on the chassis (12), a swept material container (108) sitting on the chassis (12), at least one main sweeping roller (54) arranged on the chassis (12) such that it can rotate about an axis of rotation (56), a height adjustment unit (72) via which a vertical position of the axis of rotation (56) of the at least one main sweeping roller (54) can be adjusted relative to the contact plane (26), and a handle (84) which can be swivelled relative to the chassis (12), which is mechanically coupled to the height adjustment unit (72), and via which a vertical position of the axis of rotation (56) can be lockably adjusted relative to the contact plane (26) by an operator, characterised in that the handle (84) has an end position (98) in which the at least one main sweeping roller (54) is at a distance from the contact plane (26).

Description

[0001] Sweeper with height adjustment device

[0002] The invention relates to a sweeper comprising a chassis, a rear wheel device and a front wheel device which are arranged on the chassis and which define a setup plane of the sweeper on a surface to be cleaned, a push bar which is arranged on the chassis, a sweeping waste container which is seated on the chassis, at least one main sweeping roller which is arranged on the chassis so as to be rotatable about a rotation axis, a height adjustment device by means of which a height position of the rotation axis of the at least one main sweeping roller relative to the setup plane can be adjusted, and a handle which is pivotable relative to the chassis, which is mechanically coupled to the height adjustment device and by means of which a height position of the rotation axis relative to the setup plane can be set by an operator.

[0003] US 3,039,124 A discloses a sweeping device with a frame.

[0004] EP 2 497 355 A2 discloses a sweeping device with an adjustable brush arrangement.

[0005] DE 12 25 684 A discloses a sweeper with dust extraction and an adjustable sweeping roller.

[0006] DE 10 2014 006 391 A1 discloses a sweeper with a base frame, wherein the base frame is pivotably mounted on a wheel axle in such a way that, during operation, the height of a roller axle relative to the wheel axle can be manually changed by pivoting the base frame.

[0007] WO 2008 / 022699 A2 discloses a hand-guided sweeper with a housing that covers a rotatable sweeping roller and that can be moved along a floor surface by means of two rotatably mounted running wheels, wherein the sweeping roller can be driven in rotation by at least one running wheel, and with a U-shaped push bucket.

[0008] CH 489 235 A discloses a hand-held waste collector and floor cleaner with a rotating brush.

[0009] EP 1 531 202 B1 discloses a sweeper comprising a housing, a debris hopper, and a sweeping roller covered by the housing, which sweeping roller is mounted on a height adjustment device for rotation about a pivot axis. The height adjustment device can be pivoted by means of an adjustment mechanism about a pivot axis aligned parallel to the pivot axis. The adjustment mechanism has a pivot arm which can be pivoted about the pivot axis, projects from the housing, and can be releasably locked in different pivot positions. The height adjustment device comprises two support arms which can be pivoted about the pivot axis and on which the sweeping roller is rotatably mounted. The support arms are rigidly connected to one another via a cross strut, the pivot arm being fixed to the cross strut and projecting radially from the cross strut with respect to the pivot axis.

[0010] DE 10 2018 104 749 A1 discloses a sweeper comprising a chassis, at least one sweeping brush arranged on the chassis, and a height adjustment device assigned to the at least one sweeping brush and by means of which a height position of the at least one sweeping brush can be adjusted relative to the chassis.

[0011] DE 10 2018 104 744 A1 discloses a sweeper comprising a chassis, a rear wheel assembly arranged on the chassis, and a push bar pivotably mounted on the chassis. A footrest area is provided, which is arranged on the chassis in the region of the rear wheel assembly. Starting from a properly positioned sweeper on a base, an operator can step on the footrest and move the sweeper as a whole away from the base into a parking position by supporting the rear wheel assembly on the base.

[0012] The invention is based on the object of providing a sweeper of the type mentioned above which is easy to operate and has long operating times.

[0013] This object is achieved according to the invention in the sweeper mentioned at the outset in that the handle has an end position in which the at least one main sweeping roller is spaced from the installation plane.

[0014] Essentially, at least one of the main sweeping rollers experiences mechanical stress when it impacts a surface to be cleaned. Bristles on the main sweeping roller are bent.

[0015] If there is a permanent mechanical load outside of sweeping operations, this can lead to a shortened service life of the corresponding main sweeper roller.

[0016] In the solution according to the invention, there is an end position of the handle in which the at least one main sweeping roller is lifted from the installation plane, so that there is no contact and therefore no mechanical stress.

[0017] Furthermore, such an end position with the base raised can also be advantageous for pure sweeping operation of the sweeper without a cleaning function, for example, to be able to drive over an area that is not to be cleaned or to park or store the sweeper. Using the corresponding end position of the handle, in which the at least one main sweeping roller is raised above the base, the sweeper can also be stored upright on the floor above its base while protecting the at least one main sweeping roller.

[0018] Because at least one main sweeping roller is lifted from the installation level when the handle is in an end position, this corresponding position can be reached by an operator in a simple and intuitive manner.

[0019] It is advantageous if at least one of the following is provided: a pivoting movement of the handle out of the end position reduces a vertical distance of the rotation axis from the installation plane; a pivoting movement of the handle out of the end position increases a contact pressure of the at least one main sweeping roller on the surface to be cleaned; there is exactly one end position in which the at least one main sweeping roller is spaced from the installation plane; in every fixing position of the handle outside the end position, the at least one main sweeping roller touches the installation plane; a pivoting movement of the handle out of the end position in which the at least one main sweeping roller is spaced from the installation plane is away from the installation plane.

[0020] This results in a structurally simple design with optimized usability.

[0021] Furthermore, it is advantageous if at least one of the following is provided: a pivot axis for the pivoting mobility of the handle relative to the chassis is parallel to the rotation axis of the at least one main sweeping roller; a pivot axis for the pivoting mobility of the handle relative to the chassis is parallel to a wheel axis of the rear wheel device; a pivot axis of the pivoting mobility of the handle relative to the chassis is transverse and in particular perpendicular to a forward direction of travel of the sweeper; a pivot axis of the pivoting mobility of the handle relative to the chassis is parallel to a pivot axis of the push bar, wherein the push bar is pivotable relative to the chassis.

[0022] This results in easy operation of the height adjustment of at least one main sweeping roller to the installation level.

[0023] In one embodiment, at least one stop is provided against which the handle and / or an element of the height adjustment device rests in the end position, in which the at least one main sweeping roller is spaced from the installation plane. This also makes it easy to prevent the handle from pivoting further beyond this end position.

[0024] In one embodiment, the handle is assigned a track device, which in particular comprises a circular path when the handle is pivotable relative to the chassis. Continuous or preferably discrete positions of the handle, which correspond to pivoting positions, can be defined on the track device. This also defines the height positions of the at least one main sweeping roller relative to the installation plane. In one structural embodiment, the height adjustment device comprises a swinging device mounted on the chassis so as to be rotatable about a rotational axis, with the at least one main sweeping roller being held on the swinging device so as to be rotatable about the rotational axis. In this context, reference is made to EP 1 531 202 B1, to which express reference is made. A height adjustment device can be implemented in a structurally simple manner.Furthermore, the handle can be easily mechanically coupled to the height adjustment mechanism. In particular, a height position can then be directly adjusted and locked using the handle.

[0025] It is advantageous if at least one of the following is provided: the axis of rotation of the rocker device is spaced apart from the axis of rotation of the at least one main sweeping roller; the axis of rotation of the rocker device and the axis of rotation of the at least one main sweeping roller are oriented parallel to each other.

[0026] The height position can be easily adjusted by turning the swing arm.

[0027] Furthermore, it is advantageous if the handle is connected to the swinging device, in particular to at least one of the following: the handle is rigidly connected to the swinging device; the handle is eccentrically connected to the swinging device with respect to the axis of rotation of the swinging device.

[0028] The handle can then be pivoted relative to the chassis in a simple manner by rotating the swing arm assembly relative to the chassis. A pivoting position of the handle relative to the chassis then directly corresponds to a specific height position of the at least one main sweeping roller (with its rotational axis) relative to the installation plane. This results in a structurally simple height adjustment.

[0029] In one embodiment, the swinging device comprises a first region, a second region, and a third region, the second region being located between the first region and the third region, and the swinging device being held on the chassis at the second region so as to be rotatable about the axis of rotation, the at least one main sweeping roller being held in the first region, and the handle being connected to the swinging device in the third region. This results in a structurally simple height adjustment device in which the height position of the at least one main sweeping roller relative to the installation plane can be adjusted and also fixed directly via a pivoting position of the handle.

[0030] In one embodiment, the handle is assigned a plurality of discrete positions, wherein, in particular, these plurality of discrete positions are arranged on a track device, and at which the handle can be fixed with respect to its pivoting movement, wherein a discrete position is assigned to a specific height position of the rotation axis relative to the installation plane. This results in simple and intuitive operation.

[0031] In a structurally advantageous embodiment, the handle comprises a form-locking element which serves to establish a pivoting position of the handle relative to the chassis and in particular to establish a height position of the rotational axis of the at least one main sweeping roller relative to the installation plane. In this way, a corresponding height position of the at least one main sweeping roller relative to the installation plane can be easily adjusted and also established via the handle. It can be provided that the form-locking element is mounted on a rod in a movable and in particular linearly displaceable manner, wherein the handle is mechanically connected to the height adjustment device via the rod. This results in a structurally simple design for height adjustment, including the establishment of a selected height position.

[0032] It is advantageous if at least one of the following is provided: the form-locking element is designed as a sleeve, which is seated in particular on a rod; one or more counter-elements for the form-locking element for a form-locking connection are arranged on a track device on which the handle is movable, wherein in the case of a form-locking connection, pivoting mobility of the handle relative to the chassis is blocked; the form-locking element is spring-loaded by a spring device, wherein in order to cancel a form-locking connection, an operator must overcome a spring force of the spring device by moving the form-locking element.

[0033] Due to the design of the form-locking element as a sleeve, it can be easily moved by an operator, in particular to release a form-locking connection and to pivot the handle (and thus to adjust the height of at least one main sweeping roller).

[0034] The track device allows for easy adjustment and setting of the height positions of at least one main sweeping roller. This can be done intuitively by the operator. The spring device fixes a specific height position in a normal state, when the positive locking element is active and no operator force is applied. To adjust the height, the operator must overcome the spring force of the spring device and, in particular, move the positive locking element. This largely prevents, for example, unintentional adjustment.

[0035] In one embodiment, the chassis has a first region on which the height adjustment device, the at least one main sweeping roller, and the handle are arranged, and a second region on which the sweeping waste hopper is mounted. The second region follows the first region in a longitudinal direction of the chassis. This results in a structurally advantageous design for the sweeper. In particular, a division into a sweeping waste hopper region (second region) and a first region on which functional components of the sweeper are arranged can be achieved.

[0036] It is advantageous if at least one main sweeping roller is positioned between the rear wheels of the rear wheel assembly on the chassis. During a sweeping operation, debris can then be guided over the at least one main sweeping roller into the debris container.

[0037] In an advantageous embodiment, a storage device with a storage surface for one or more objects is provided. The storage device is held by the chassis and is inclined parallel to the installation plane or at a maximum angle of 10° to the installation plane. This allows objects such as a bucket to be carried along with the sweeper during cleaning or ferry operations (with at least one sweeping roller raised). Objects can be stored on the sweeper when parked.

[0038] In one embodiment, a suction fan device is provided, through which the interior of the waste container can be subjected to a vacuum flow, and a filter device for the vacuum flow is provided. Generally, during a sweeping process, dust is thrown up by the action of at least one sweeping roller on a floor to be cleaned. This dust can pollute the environment. The suction fan device can extract a significant portion of this dust, thereby reducing environmental pollution.

[0039] The sweeper is designed, in particular, as a hand-held sweeper that can be guided over the floor to be cleaned using the push bar. In one embodiment, no separate motor is provided for the at least one main sweeping roller. When an operator guides the sweeper over an area to be cleaned and the at least one main sweeping roller acts on the area to be cleaned, this causes the at least one main sweeping roller to rotate about the rotational axis. Alternatively, a separate motor for the at least one main sweeping roller can also be provided to rotate it about the rotational axis.

[0040] The following description of preferred embodiments, taken in conjunction with the drawings, serves to further explain the invention. They show:

[0041] Figure 1 is a perspective view of a first embodiment of a sweeper according to the invention;

[0042] Figure 2 is a rear view of the sweeper according to Figure 1 with the main sweeping roller raised;

[0043] Figure 3 is a sectional view of the sweeper of Figure 2 taken along line 3-3 of Figure 2;

[0044] Figure 4 is the same view as Figure 2 with the main sweeper roller lowered; Figure 5 is a sectional view along line 5-5 of the sweeper according to Figure 4;

[0045] Figure 6 is a perspective view of a second embodiment of a sweeper according to the invention;

[0046] Figure 7 is a sectional view of the sweeper according to Figure 6; and

[0047] Figure 8 is an enlarged view of Report A according to Figure 7.

[0048] A first embodiment of a sweeper according to the invention, which is shown in Figures 1 to 5 and designated by 10, comprises a chassis 12. The chassis 12 forms the body or base of the sweeper 10 and holds (directly or indirectly) the components of the sweeper 10. The chassis 12 ensures the mechanical stability of the sweeper 10 and holds its components.

[0049] The chassis 12 has a front end 14 and a rear end 16. A longitudinal axis 18 of the chassis 12 (and thus also of the sweeper 10) runs between the front end 14 and the rear end 16.

[0050] The sweeper 10 is mounted on a surface 24 to be cleaned (see Figure 3) via a rear wheel assembly 20 and a front wheel assembly 22. The rear wheel assembly 20 and the front wheel assembly 22 define a mounting plane 26 of the sweeper 10 on the surface 24 to be cleaned. If the surface 24 to be cleaned is flat, the mounting plane 26 coincides with the surface to be cleaned.

[0051] The rear wheel assembly 20 is arranged on the chassis 12 in the region of the rear end 16. The rear wheel assembly 20 has a right rear wheel 30 and a left rear wheel 32 relative to a forward travel direction 28 of the sweeper 10. The right rear wheel 30 and the left rear wheel 32 are spaced apart from one another in a transverse direction 34. The transverse direction 34 is perpendicular to the longitudinal axis 18 and parallel to the installation plane 26.

[0052] The right rear wheel 30 and the left rear wheel 32 are positioned on the chassis 12 so as to be rotatable about a common wheel axis 36. The wheel axis 36 is parallel to the transverse direction 34. It is perpendicular to the longitudinal axis 18. It is perpendicular to the forward direction 28. The wheel axis 36 is parallel to the installation plane 26.

[0053] The right rear wheel 30 and the left rear wheel 32 are each arranged laterally on the chassis 12. In one embodiment, they extend to the rear end 16 (see Figure 1).

[0054] In one embodiment, the front wheel assembly 22 is or includes a roller 38, in particular a steering roller. The front wheel assembly 22 with the (at least one) roller 38 is arranged in the region of the front end 14.

[0055] In one embodiment, the roller 38 lies on a center plane 40 of the chassis 12 (see Figure 2). The center plane 40 is perpendicular to the support plane 26. The transverse direction 34 is perpendicular to the center plane 40. The longitudinal axis 18 lies in the center plane 40. The center plane 40 is a plane that is centrally located between the right rear wheel 30 and the left rear wheel 32.

[0056] The roller 38 is rotatable about a roller axis. In the forward direction of travel 28 of the sweeper 10, this roller axis is parallel to the wheel axis 36. The wheel axis 36 is a fixed axis relative to the chassis 12. The position of the roller axis relative to the chassis 12 depends on the position of the roller 38 if it is designed as a steering roller.

[0057] The roller axis of the roller 38 is parallel to the installation plane 26. The sweeper 10 comprises a push bar 42, which is arranged on the chassis in the region of the rear end 16 and in particular in the region of the rear wheel assembly 20. Using the push bar 42, an operator standing on the floor 24 to be cleaned can guide and, in particular, push the sweeper 10 over the floor to be cleaned.

[0058] In one embodiment, no motor drive is provided for the sweeper 10 and the travel movement is operator-driven (via operator force).

[0059] In one embodiment, the push bar 42 can be pivoted about a pivot axis 44 relative to the chassis 12. A defined pivot position of the push bar 42 relative to the chassis 12 can be set continuously or in steps. This allows the push bar 42 to be pivoted for storage of the sweeper 10 such that the height of the sweeper 10 is minimized in a height direction 46 perpendicular to the installation plane 26 and, for example, does not protrude beyond the top of the sweeper 10.

[0060] Due to the pivotability of the push bar 42 about the pivot axis 44, the size of the sweeper 10 can be adjusted to suit an operator during sweeping operation.

[0061] The pivot axis 44 is parallel to the installation plane 26. It is perpendicular to the center plane 40. It is perpendicular to the longitudinal axis 18 of the chassis 12.

[0062] In one embodiment, a corresponding pivot bearing for the pivotable connection of the push bar 42 to the chassis 12 is arranged such that the pivot axis 44 lies in the height direction 46 above the wheel axis 36 of the rear wheel device 20.

[0063] In one embodiment, the push bar comprises a first rod portion 48 which is pivotally connected to the chassis 12 in the region of the left rear wheel 32, and a spaced second rod portion 50 which is pivotally connected to the chassis 12 in the region of the right rear wheel 30.

[0064] The first rod portion 48 and the second rod portion 50 are connected to the chassis 12 via a distal end portion. A third rod portion 52 is provided, which connects the first rod portion 48 and the second rod portion 50 to one another at a proximal end portion. The third rod portion 52 is a primary support area for an operator who guides the sweeper 10 over the surface 24 to be cleaned.

[0065] A main sweeping roller 54 is arranged on the chassis 12 and is rotatable about a rotation axis 56. The main sweeping roller 54 comprises a cylindrical support 58 on which a plurality of bristles are arranged.

[0066] The rotation axis 56 is parallel to the installation plane 26. It is parallel to the wheel axis 36 and parallel to the pivot axis 44. It is perpendicular to the center plane 40. It is parallel to the transverse direction 34. The rotation axis 56 is perpendicular to the longitudinal axis 18. It is perpendicular to the forward direction 28.

[0067] During sweeping operation of the sweeper 10, the bristles of the main sweeping roller 54 act on the surface 24 to be cleaned (see Figure 5; Figure 5 shows a position of the main sweeping roller 54 in which its bristles touch the surface 24 to be cleaned and thereby act on it mechanically. This leads to a corresponding deformation of the bristles, which is not shown in Figure 5 for illustrative reasons.)

[0068] The main sweeper roller 54 is arranged between the left rear wheel 32 and the right rear wheel 30 in the area of ​​the rear end 16 of the chassis 12. A swing arm assembly 60 is positioned on the chassis 12 via a pivot bearing 62. The pivot bearing 62 defines a pivot axis 64.

[0069] The rotation axis 64 is parallel to the installation plane 26. It is parallel to the rotation axis 56. It is perpendicular to the center plane 40. It is parallel to the wheel axis 36. It is parallel to the transverse direction 34. It is perpendicular to the longitudinal axis 18.

[0070] The swing arm device 60 has a first region 66, a second region 68, and a third region 70. The second region 68 lies between the first region 66 and the third region 70. The swing arm device 60 is held on the chassis 12 by means of the pivot bearing 62 via the second region 68.

[0071] In the first area, the main sweeping roller 54 is held on the swinging device 60 so as to be rotatable about the rotation axis 56 via a corresponding roller pivot bearing.

[0072] Depending on the rotational position of the swing device 60 about the rotational axis 64, the rotational axis 56 of the main sweeping roller 54 is located at different height positions (in the height direction 46) relative to the installation plane 26. This will be explained in more detail below.

[0073] A height adjustment device 72 is formed via the swing device 60, with which the height position of the main sweeping roller 54 of the installation level 26 can be adjusted depending on the rotational position of the swing device 60 about the rotation axis 64.

[0074] It can be provided that a guide device is assigned to the swinging device 60 in order to guide it relative to the chassis 12 and thus the main sweeping roller 54. In one embodiment, the swinging device comprises spaced-apart swinging elements that are connected to one another and, for example, are connected to one another at the third region 70. Between the spaced-apart swinging elements, the main sweeping roller 54 is positioned at the first region 66 on the corresponding pivot bearing for rotation about the rotation axis 56.

[0075] The chassis 12 comprises a first region 74, at which the rear end 16 is located, and a second region 76, which follows the first region 74 in the longitudinal axis 18 and at which the front end 14 is located.

[0076] A housing 78 is arranged on the first region 74, which has a housing interior 80 (see Figure 3). The height adjustment device 72 is arranged in the housing interior 80.

[0077] The housing 78 has a wall 82 as a boundary to the second region 76.

[0078] In particular, a pivot bearing for the main sweeping roller 54 is also arranged in the housing interior 80, allowing it to rotate about the rotation axis 56. Furthermore, the swinging device 60 with the pivot bearing 62 is arranged in the housing interior 80.

[0079] A handle 84 is provided for an operator to adjust the height of the main sweeping roller 54 relative to the installation plane 26. The handle 84 comprises a rod 86. This rod 86 is rigidly connected to the third region 70 of the swinging device 60; the handle 84 is mechanically coupled to the swinging device 60 via the rod 86.

[0080] The handle 84 can thus be rotated or pivoted relative to the chassis 12 via the rotation axis 64. A track device 88 is located on the housing 78. The track device 88 serves to establish a specific rotational or pivotal position of the handle 84 relative to the chassis 12. It also indicates to an operator the rotational position of the handle 84 relative to the chassis 12. The specific rotational position, in turn, corresponds to a height position of the main sweeping roller 54 (relative to the rotation axis 56) above the installation plane 26.

[0081] The track device 88 comprises a circular track 90 with opposing circular track elements, between which lies a slot. The rod 86 extends through the slot.

[0082] A positive locking element 92 is located on the rod 86 outside the housing interior 80. This positive locking element 92 serves to define a pivoting position (rotational position) of the handle 84 on the circular path 90 and thereby also to define a specific rotational position of the swing arm device 60 relative to the chassis 12.

[0083] Counter elements 94, and in particular spaced-apart discrete elements 94, are arranged on the circular path 90. These correspond to the positive-locking element 92 such that, in certain discrete positions, the positive-locking element 92 can engage the counter element 94, thereby blocking the handle 84 from pivoting relative to the chassis 12. This, in turn, blocks the pivoting of the swinging device 60 about the rotation axis 64. This, in turn, means that a specific height position of the main sweeping roller 54 (relative to its rotation axis 56) relative to the installation plane 26 is fixed.

[0084] The form-locking element 92 is guided on the rod 86 in a movable and, in particular, linearly displaceable manner.

[0085] In one embodiment, the form-locking element 92 is designed as a sleeve that is guided on the rod for linear displacement. The form-locking element 92 is supported on the rod 86 via a spring device 96 (see Figure 5). A spring force of the spring device 96 acts in such a way that it presses the form-locking element 92 against the housing 78 and, in turn, against the track device 88. When a specific position of the form-locking element 92 relative to the counter elements 94 is reached, a form-locking occurs, and the pivotability of the handle 84 (in any direction) is blocked.

[0086] An operator can release the positive locking between the positive locking element 92 and the counter elements 94 by pulling the positive locking element 92 away from the rod 86 (away from the rotation axis 64). To do so, the operator must overcome the spring force of the spring device 96. After releasing the positive locking between the positive locking element 92 and the counter elements 94, the operator can then pivot the handle 84 relative to the chassis 12 and then adjust the height position of the main sweeping roller 54 relative to the installation plane 26.

[0087] When the user no longer exerts force, the positive locking element 92 can move back toward the track device 88, and a positive locking connection can be ensured. As mentioned above, discrete positive locking positions of the handle 84 on the track device 88 are provided.

[0088] In this context, reference is made to EP 1 531 202 B1, in which a corresponding elastically pre-tensioned handle is disclosed.

[0089] The handle 84 is pivotable about the rotation axis 64 relative to the chassis 12 between a first end position 98 (Figures 1, 3, 4) and a second end position (not shown in the figures). The first end position 98 is a position of the handle 84 in which the swinging device 60 is positioned such that the main sweeping roller 54, with respect to its rotation axis 56, has the greatest distance from the installation plane 26 compared to all other positions. The second end position is a position of the handle 84 in which the swinging device 60 with the main sweeping roller 54 is positioned such that the rotation axis 56 has the smallest distance from the installation plane 26.

[0090] When the handle 84 pivots out of the first end position 98, the distance between the rotation axis 56 and the installation plane 26 decreases.

[0091] In one embodiment (Figures 3 to 6), the handle 84 is oriented relative to the rod 86 at an acute angle to the mounting plane 26. When pivoting out of the first end position 98, the angle between the handle 84 and the mounting plane 26 increases (which leads to a lowering of the rotation axis 56).

[0092] In the first end position 98 and the second end position, the handle 84 can be fixed and in particular locked relative to the chassis 12, in particular via the track device 88, by engagement of the counter elements 94 on the form-locking element 92.

[0093] It can additionally be provided that the first end position 98 and / or the second end position is defined by a stop 100. When the handle 84 reaches the first end position 98, the handle 84 and / or an element of the height adjustment device 72 rests against the stop 100.

[0094] In one embodiment, the stop 100 is formed on the track device 88 and forms, for example, a boundary wall of the slot of the track device 88, which (in the described embodiment) specifies the minimum pivot angle and blocks further pivoting toward the installation plane 26.

[0095] In a corresponding manner, a stop can also be assigned to the second end position. The first end position 98 is such that, in this first end position 98 of the handle 84, the main sweeping roller 54 is spaced from the installation plane 26. Bristles 102 of the main sweeping roller 54 are spaced from the installation plane 26 and do not touch it.

[0096] In the first end position 98, the main sweeping roller 54 is raised relative to the installation level 26.

[0097] In the first end position 98 of the handle 84 with the main sweeping roller 54 raised, the sweeper 10 can be guided over a floor surface without mechanical contact of the main sweeping roller 54 with the floor surface. The first end position 98 of the handle 84 provides a sort of shuttle operation.

[0098] Furthermore, in the first end position 98 of the handle 84, the main sweeper roller 54 can be "relieved." Its bristles 102 do not touch the ground on which the sweeper 10 is positioned. As a result, they do not experience any deformation. This relieves the load on them when not in use, thus fundamentally extending their service life.

[0099] Figures 1 to 3 show such a driving or storage state of the sweeper 10, in which the handle 84 is in its first end position 98, thereby spacing the main sweeping roller 54 from the installation plane 26. A distance exists between the tips of the bristles 102 and the installation plane 26. In Figure 3, a corresponding minimum distance is indicated by reference numeral 104.

[0100] Outside the first end position 98, the main sweeping roller 54 is lowered and touches the support plane 26 such that it touches a surface 24 to be cleaned (Figures 4, 5). This means that bristles 102 are bent due to contact with the floor 24 to be cleaned. This is not shown in Figures 4 and 5 for illustrative reasons. The bristles 102 rest against a partial area of ​​the surface 24 to be cleaned in order to be able to act on it mechanically.

[0101] The further the handle 84 is pivoted out of the first end position 98 (with corresponding locking via the form-locking element 92 and the counter-elements 94), the lower the rotation axis 56 is in the height direction 46 relative to the installation plane 26.

[0102] By adjusting the respective pivot position accordingly, the brush can be adapted to the condition of the surface 24 to be cleaned, and, for example, a contact pressure on the surface 24 to be cleaned can also be adjusted. Furthermore, bristle wear can be compensated for by selecting the appropriate pivot position.

[0103] The chassis 12 comprises a base support 106. The front wheel assembly 22 is mounted directly on the base support 106. The base support 106 has a plate-shaped configuration, at least in the second region 76 of the chassis 12.

[0104] A debris hopper 108 is releasably mounted on the base support 106 at the second portion 76 of the chassis 12. The debris hopper 108 serves to collect debris, which is conveyed into an interior space 110 of the debris hopper 108 by the main sweeping roller 54.

[0105] The sweeping waste hopper 108 is designed as a box. It comprises a wall 112 that surrounds the interior 110. The wall 112 is open at an end face 114, which faces the housing 78 when the sweeping waste hopper 108 is mounted on the chassis 12. During sweeping operation of the sweeping machine 10, sweeping waste can be conveyed into the interior 110 through a corresponding opening 116 in the sweeping waste hopper 108. When the sweeping waste hopper 108 is removed from the sweeping machine 10, the sweeping waste hopper 108 can be emptied through the opening 116. The wall 112 of the sweeping waste hopper 108 comprises a bottom wall 118. When the sweeping waste hopper 108 is mounted on the chassis 12, the bottom wall 118 faces the base support 106 and is supported in particular on the base support.

[0106] Opposite the bottom wall 118, the waste container 108 has a top wall 120.

[0107] The top wall 120 and the bottom wall 118 are connected by a side wall 122. This side wall has a front area 124, which is arranged at or faces the front end 14. The opening 116 on the debris container 108 is positioned opposite this front area 124.

[0108] In one embodiment, the bottom wall 118 and the top wall 120 are substantially straight. The front area 124 includes shoulders (see Figure 3). These serve to positively position the debris container 108 on the chassis 12 and also to provide recesses for mounting elements of the front wheel assembly 22.

[0109] The wall 82 of the housing 78 is essentially straight. It is inclined at an acute angle to the installation plane 26. In the illustrated embodiment, this acute angle is approximately 70°. The wall 112 is adapted at the opening 116 to this inclination of the wall 82 of the housing 78. This allows the debris container 108, when mounted on the chassis 12, to be supported downwards on the wall 82 toward the installation plane 26.

[0110] A holding device, designated as a whole by 126, is arranged on the chassis 12 and holds the dirt hopper 108 to the chassis 12. This holding device 126 comprises the wall 82 and further form-locking elements, which ensure appropriate support of the dirt hopper 108. In particular, lateral form-locking elements 128 (see Figure 1) and front form-locking elements 130 (see Figure 3) are provided, which prevent the dirt hopper 108 from moving outward, when properly positioned on the chassis 12, in the transverse direction 34 (lateral form-locking elements 128) and in the longitudinal axis 18 toward the front end 14 (front form-locking element 130). The wall 82 of the housing 78 ensures that the outward movement toward the rear end 16 is blocked.

[0111] Furthermore, the chassis 12 with the second region 68 provides downward support. As mentioned, the wall 82 also provides downward support toward the installation plane 26. The front form-locking element 130 can also be designed to provide downward support.

[0112] The debris hopper 108 is positioned on the chassis 12 such that it can be removed upwards in a direction opposite to the direction of the installation plane 26 and, in particular, can be removed without tools. Furthermore, no screws or the like need to be loosened to remove the debris hopper.

[0113] The housing 78 has an opening 132 on the wall 82, which is assigned to the main sweeping roller 54. Sweepings can be conveyed through the opening 132 by the main sweeping roller 54 through the opening 116 into the sweepings container 108.

[0114] On the first area 74 of the chassis 12, in the area of ​​the opening 132, there is a ramp 134 which leads from the installation level 26 to the opening 132.

[0115] Without force, the ramp 134 is oriented at an acute angle to the installation plane 26, such that an inclined plane to the opening 132 is formed for sweeping material. Sweeping material is thrown into the opening 132 by the main sweeping roller 54. The ramp supports this throwing action. At the same time, it forms an apron or boundary surface, which essentially prevents sweeping material from being thrown by the main sweeping roller 54 below the base support 106 in the direction of the roller 38.

[0116] In one embodiment, the ramp 134 is movable. It can be movably mounted on the chassis 12 and / or have inherent mobility through a corresponding construction from an elastic material such as a rubber material.

[0117] In one embodiment, one or two side brushes 136 are arranged on the chassis 12. In the embodiment shown, one side brush 136 is arranged on each side.

[0118] A side brush is held by an arm 138, in particular pivotable, relative to the chassis 12.

[0119] A broom holder 140 is attached to the arm 138. A round brush 142 with corresponding bristles is attached to the broom holder 140.

[0120] In particular, the round brush is inclined at a small acute angle (for example in the order of 30°) to the installation plane 26.

[0121] The pivotable side arm 138 allows a lateral position of the corresponding side brush 136 to be determined. The arm 138 can be pivoted, in particular, toward the chassis 12 to provide a space-optimized storage position for the sweeper 12.

[0122] A free space 144 is formed between the installation plane 26 and the base support 106. The task of the side brushes 136 is to transport sweepings in such a way that they can be driven over the free space 144 and then thrown into the sweepings container 108 through the opening 132 by the main sweeping roller 54.

[0123] In one embodiment, a handle 146 is arranged on the chassis 12 in the region of the front end 14, by means of which the sweeper 10 can be carried.

[0124] The sweeper 10 works as follows:

[0125] During cleaning operation, the sweeper 10 is positioned above the installation level 26 on the surface 24 to be cleaned. The push bar 42 is positioned so that an operator standing on the surface 24 to be cleaned can push the sweeper 10 across the surface 24 to be cleaned (using muscle power).

[0126] Before a cleaning operation, the main sweeping roller 54 is in a height position at which it is spaced from the installation plane 26 and thus does not touch the surface 24 to be cleaned. This is achieved by the first end position 98 of the handle 84.

[0127] Before cleaning, an operator moves the handle 84 out of the first end position 98 and ensures that the form-locking element 92 engages with the corresponding counter-elements 94 in the desired position of the main sweeping roller 54. The corresponding position of the fixed handle 84 outside the first end position 98 ensures that the main sweeping roller 54 (with its bristles 102) touches the surface 24 to be cleaned. Depending on the position of the handle 84 as a pivot position relative to the rotation axis 64, the rotation axis 86 of the main sweeping roller 54 is at different heights relative to the installation plane 26. This allows adaptation to the specific surface to be cleaned. An operator then pushes the sweeper 10 over the surface 24 to be cleaned. The main sweeping roller 54 can rotate about the rotation axis 56.A travel movement of the sweeper 10 on the floor 24 to be cleaned ensures a rotational drive of the main sweeping roller 54 about the rotation axis 56. The direction of rotation is such that sweeping material located on the surface to be cleaned in front of the main sweeping roller 54 is carried along by it and thrown over the ramp 134 through the opening 132 into the sweeping material container 108.

[0128] The sweeping machine 10 picks up sweeping material which is located below the base support 106 in front of the main sweeping roller 54.

[0129] A length of the main sweeping roller in a direction parallel to the rotation axis 56 (in the transverse direction 34) of the chassis 12 is 50% and preferably at least 70% and in particular at least 80% of the corresponding width of the chassis 12 in this area.

[0130] One or two side brushes 136 can initially pick up debris outside the "track" of the chassis 12 and convey it into this track. When the sweeper 10 passes over it, the main sweeping roller 54 can then also pick up this debris and throw it into the debris container 108.

[0131] The height adjustment device 72 with the handle 84 and the first end position 98, in which the main sweeping roller 54 is spaced from the installation plane 26 (so that none of the bristles 102 are adjacent to the installation plane 26), results in a "clean-free" sweeping operation of the sweeper 10. Such a sweeping operation is used, for example, to stow the sweeper or to specifically "switch off" the sweeping function of the main sweeping roller 54. Furthermore, when the sweeper 10 is parked, the main sweeping roller 54 is protected, as the bristles 102 are then not subjected to mechanical stress. Contact of bristles 102 with a floor leads to a bending of the bristles and thus to mechanical stress.

[0132] For a cleaning operation, the position of the main sweeping roller 54 can be adjusted by operating the handle 84 from the first end position 98 via the height adjustment device 72 in order to be able to carry out an optimized cleaning process adapted to the surface 24 to be cleaned.

[0133] For example, bristle wear can also be compensated by adjusting the height setting.

[0134] In particular, outside the first end position 98, a plurality of discrete positions of the handle 84 and thus also a plurality of discrete height positions of the rotation axis 56 or the installation plane 26 are possible. In one embodiment, three or four such discrete positions are provided outside the first end position 98.

[0135] The sweeper 10 comprises a storage device 148. This storage device 148 is designed such that, when the sweeper 10 is set up with the installation level 26, objects and in particular a bucket can be placed on the sweeper 10 and, in particular, can also be transported with the sweeper 10 during a travel movement of the sweeper 10.

[0136] In the sweeper 10 (Figures 1 to 5), the depositing device 148 is arranged or formed on the sweeping material container 108.

[0137] The storage device 148 comprises a storage surface 150. The storage surface 150 is planar at least with respect to an envelope. This will be explained in more detail below. The storage surface has a width B in a width direction of at least

[0138] 20 cm (see Figure 1). The width direction is parallel to the transverse direction 34 and perpendicular to the longitudinal axis 18.

[0139] In a specific example, the width B is 30 cm.

[0140] Furthermore, the storage surface 150 has a length L in a longitudinal direction parallel to the longitudinal axis 18, which is at least 20 cm.

[0141] In a specific example, the length L is 30 cm.

[0142] Furthermore, the storage area 150 has a surface area of ​​at least 400 cm 2 and especially 500 cm 2 This area is at least approximately the product of the length L and the width B.

[0143] In a specific example, the area is 900 cm 2 .

[0144] In particular, the storage surface 150 is designed such that, for example, a 10 l household bucket or a 20 l construction bucket can be positioned on the storage surface 150.

[0145] The storage surface 150 of the storage device 148 is arranged on the sweeper 10 in such a way that an object (such as a bucket) can be placed onto the storage surface 150 from above and then the storage surface 150 supports the object downwards.

[0146] The depositing surface 150 is configured, at least with respect to its envelope, parallel to the installation plane 26 or oriented at a small, acute angle of no more than 10° to the installation plane 26. This prevents the object from slipping, at least on a level surface 24. An anti-slip device can also be provided, which is described in more detail below. In the sweeper 10, the depositing device 148 is formed on the debris container 108 and, in this case, on the ceiling wall 120. An outer side 152 of the ceiling wall 120 forms or encompasses the depositing surface 150.

[0147] Accordingly, even when the sweeping waste container 108 is removed from the sweeping machine 10, the storage surface 150 is removed from the sweeping machine 10.

[0148] The storage surface 150 is arranged within an edge wall 154. The edge wall comprises a first lateral wall 156, which extends at least approximately parallel to the longitudinal axis 18. It further comprises a second lateral edge wall 158, which is parallel and spaced apart from the first lateral wall 156. The first lateral wall 156 and the second lateral wall 158 are connected by an end wall 160. The end wall 160 is oriented at least approximately parallel to the transverse direction 34.

[0149] The end wall 160 faces the housing 78. The end wall 160 and the first lateral wall 156 and the second lateral wall 158 are configured to provide a continuous and, in particular, step-free transition from the debris container 108 to the housing 78 at its top when the debris container 108 is properly seated on the sweeper 10.

[0150] The edge wall 154 is open toward the front end 14 (when the debris hopper 108 is mounted on the sweeper 10); it is open away from the front wall 160. This allows water, in particular, that may accumulate on the storage surface 150 or would otherwise accumulate to flow forward (toward the front end 14).

[0151] The storage surface 150 lies between the first lateral wall 156, the end wall 160, and the second lateral wall 158. A distance between the first lateral wall 156 and the second lateral wall 158 essentially defines the width B of the storage surface 150. A distance between the end wall 116 and the opposite front end defines the length L.

[0152] Opposite the edge wall 154, the storage surface 150 is recessed.

[0153] A handle 162 is arranged on the edge wall 154 and thereby on the end wall 160. The handle 162 comprises a bracket with a clearance 164 for the operator's fingers to pass through.

[0154] The dirt container 108 can be grasped via the handle 162 and removed from the sweeping machine 10 or inserted into the sweeping machine 10.

[0155] The edge wall 154 prevents objects positioned on the storage surface 150 from falling sideways and backwards.

[0156] A slip-preventing device 166 is assigned to the storage surface 150. The slip-preventing device 166 serves to at least make it more difficult for objects placed on the storage surface 150 to slip off.

[0157] In one embodiment, the anti-slip device 166 comprises spaced-apart webs 168, which are aligned parallel to the longitudinal axis 18 or parallel to the lateral walls 156, 158. The webs 168 are aligned transversely and, in particular, perpendicularly to the end wall 160.

[0158] The webs 168 are made of a slip-resistant material such as a corresponding rubber material or plastic material, at least in an area that comes into contact with an object to be deposited.

[0159] In such an embodiment, an envelope of the storage surface 150 is formed by an enveloping surface on the webs 168. The anti-slip device 168 can also have other configurations, such as a non-slip mat that is fixedly or removably positioned between the walls 156, 158, 160.

[0160] In one embodiment, the storage surface 150 is assigned at least one fastening element, via which a fixation of objects positioned on the storage surface 150 (such as a bucket) can be achieved.

[0161] In one embodiment, a fastening recess 170 or fastening eyelet 170 is arranged on each of the first lateral wall 156 and the second lateral wall 158. Such a fastening recess 170 is an opening that is, in particular, continuous between an outer side of the edge wall 154 and a space above the storage surface 150.

[0162] In such a fastening recess 170, for example, a hook of a quick release can be accommodated or a tensioning strap can be pulled through.

[0163] In one embodiment, exactly one fastening recess 170 is arranged on each of the first lateral wall 156 and the second lateral wall 158, wherein these fastening recesses are aligned with one another; a connecting line between these fastening recesses 170 lies parallel to the end wall 160, parallel to the transverse direction 34, or perpendicular to the longitudinal axis 18.

[0164] Several fastening recesses 170 can also be provided per lateral wall 156 or 158.

[0165] For example, a fastening recess or multiple fastening recesses can be arranged in the front area 124 of the waste container 108. A quick-release fastener can then be arranged between such a fastening recess and the handle 162 (with its free space 164), or a tensioning strap can be passed through. In such an embodiment, a cross-over guide of a tensioning strap (between a fastening recess in the front area 124 and a fastening recess 170 on a lateral wall 156 or 158) is also possible.

[0166] Furthermore, it is also possible for one or more storage openings 172 (Figure 1) to be arranged or formed on the edge wall 154. Such a storage opening 172 can accommodate, for example, a screwdriver or the like.

[0167] The storage area 150 allows one or more objects, such as a bucket, to be carried during cleaning operation of the sweeper 10. Fastening elements 170 can be used to additionally secure such an object to prevent it from falling during cleaning operation.

[0168] Even when the sweeper 10 is parked and rests on the floor with the installation level 26 (in which case, in particular, the handle 84 is brought into the first end position 98), objects can be stored on the sweeper 10 via the storage surface 150.

[0169] The storage surface 150 is arranged on the sweeping machine 10 on the debris hopper 108. When the debris hopper 108 is fixed to the chassis 12, the storage surface 150 is located, relative to the vertical direction 46, in particular above the wheel axis 36 and above the rotation axis 56 of the main sweeping roller 54. Furthermore, the storage surface is then preferably located above the side brush(es) 136 relative to the vertical direction 56.

[0170] In the embodiment shown in Figure 1, the pivot axis 44 of the push bar 42 is located above the storage surface 150. Another embodiment of a sweeper, which is shown in Figures 6 to 8 and designated 180, comprises a chassis 182 on which a rear wheel assembly 184, a front wheel assembly 186, side brushes 188, and a main sweeping roller 190 are arranged. The arrangement is basically the same as described above with reference to the sweeper 10.

[0171] Furthermore, a height adjustment device is provided, which is basically designed identically to the above-described height adjustment device 72 of the sweeper 10. A handle 192 is provided, which has a first setting in which the main sweeping roller 190 is spaced from a mounting plane 26. (The same reference numeral is used here as for the sweeper 10.)

[0172] A removable dirt hopper 194 is mounted on the chassis 182.

[0173] A housing 196 is provided which corresponds to the housing 78.

[0174] In contrast to the housing 78 of the sweeper 10, the housing 196 also accommodates a suction fan device 198 for generating a negative pressure flow (suction flow).

[0175] A switch 200 is arranged on the housing 196, via which a motor (and in particular electric motor) of the suction fan device 198 can be activated or deactivated.

[0176] The housing 196 has a receptacle 202 for one or more batteries 204, which provide the electrical energy for operating the suction fan device 198.

[0177] The debris hopper is provided with an opening 208 on its upper side 206 (which faces away from the installation plane 26). When the debris hopper 194 is mounted on the sweeping machine 180, a channel device 210 is connected to the opening 208, which fluidically connects an interior of the debris hopper 194 (effective for a suction flow) to the suction fan device 198.

[0178] A filter device 212 is arranged on the duct device 210, which filters out dust particles and prevents them from reaching the blower motor or an impeller device of the suction blower device 198.

[0179] In one embodiment, the filter device 212 comprises a housing 214, which has a corresponding filter of the filter device 212. The housing 214 is a filter box of the filter device 212.

[0180] With respect to the suction flow, the filter device 212 is connected upstream of the suction fan device 198. With respect to the suction flow, it is connected downstream of the opening 208.

[0181] The housing 214 forms a bridge 216 between the channel device 210 and the housing 196, which is fixedly mounted on the chassis 182.

[0182] In the area of ​​the housing 214, the dirt container 194 is spaced from this housing 214.

[0183] The combination of channel device 210 and housing 214 is designed such that the debris container 194 can be easily removed from the chassis 182 and reinserted with a corresponding solution for the connection of the channel device 210 to the opening 208 or the production of this connection.

[0184] A storage device 218 with a storage surface 220 for one or more objects is formed on the bridge 216 and, in particular, on an upper side 222 of the housing 214. This upper side 222 of the housing 214 faces away from the debris container 194. The storage surface 220 itself, or an envelope thereof, lies parallel to the installation plane 26 or at an acute angle of at most 10° to it.

[0185] In particular, it has a length L of at least 20 cm and a width of at least 20 cm. Furthermore, it has a surface area of ​​at least 400 cm 2 on.

[0186] In a specific example, the length L is 24 cm, the width B is 23 cm and the area is 552 cm 2 .

[0187] The storage surface 220 can be provided with an anti-slip device as described above with reference to the anti-slip device 166. For example, appropriate webs or an anti-slip mat are provided.

[0188] In the embodiment shown, the housing 214 has an edge wall 224 which extends in a height direction transversely and in particular perpendicular to the installation plane 26 in the direction of the debris container 194.

[0189] At least one fastening recess 226 is arranged on the edge wall 224 (see also Figures 7 and 8), which is open towards the installation plane 26.

[0190] The edge wall 224 is a wall which extends parallel to the corresponding longitudinal axis (transverse to a rotation axis of the main sweeping roller 190).

[0191] A hook, such as the hook of a quick-release fastener, can be positioned on the mounting recess 226. This allows an object (such as a bucket) to be positioned on the storage surface 220. In the sweeper 180, the storage surface 220 is, in particular, a highest point of the sweeper 180 relative to the installation plane 26, with the exception of a push bar 228.

[0192] Using the bridge 216 as a storage area 220 results in optimized use of space on the sweeper 180.

[0193] The storage device 218 with the storage surface 220 is arranged between the housing 196, which is fixedly connected to the chassis 182, and the channel device 210.

[0194] Relative to the vertical direction perpendicular to the installation plane 26, the debris container 194 is arranged between the installation plane 26 and the storage surface 220. It can also be provided that the debris container 194 is positioned in this direction between the installation plane 26 and the suction fan device 198 in the housing 196.

[0195] The debris container 194 is also positioned between the filter device 212 and the installation level 26.

[0196] In principle, it is also possible for the channel device 210 to be designed accordingly and for the storage device 218 to be formed on the channel device 210. For example, the filter device 212 is then arranged on the housing 196.

[0197] During operation of the sweeper 180, a vacuum flow is generated by the suction fan device 198, which acts on the interior of the debris container 194. This vacuum flow primarily serves to minimize dust dispersion into the surrounding area during a sweeping operation with the sweeper 180. During cleaning operation of the sweeper 180 with the rotating main sweeping roller 190, dust is generally stirred up, which can then be extracted via the suction fan device 198. The suction fan device 198 primarily serves to extract such stirred up dust and not necessarily to directly extract dust from a surface 24 to be cleaned.

[0198] In principle, it is also possible for the sweeper 180 that the main sweeping roller 190 is driven by a corresponding motor.

[0199] Otherwise, the sweeper 180 functions essentially the same as the sweeper 10 with regard to the height adjustment of the main sweeping roller 190 and its distanced positioning from the installation plane in a first setting of the handle 192. Furthermore, the sweeper 180 functions essentially the same as the sweeper 10 with regard to the storage device 218.

[0200] List of reference symbols

[0201] Sweeper (first embodiment)

[0202] chassis front end rear end

[0203] Longitudinal axis

[0204] Rear wheel setup

[0205] Front wheel device area to be cleaned

[0206] Installation level

[0207] Forward direction right rear wheel left rear wheel

[0208] Transverse direction

[0209] wheel axle

[0210] role

[0211] Middle level

[0212] push bar

[0213] Swivel axis

[0214] Height direction first bar area second bar area third bar area

[0215] Main sweeper roller

[0216] axis of rotation

[0217] carrier

[0218] Swing arm device

[0219] Pivot bearing

[0220] Rotation axis first area second area third area height adjustment device first area second area housing housing interior wall handle rod track device circular track form-locking element counter elements spring device first end position stop bristles distance base support

[0221] Waste container interior wall front opening

[0222] Floor wall Ceiling wall Side wall Front area Holding device Side locking element Front locking element Opening Ramp

[0223] Side brush

[0224] arm

[0225] broom holder

[0226] Round brush

[0227] Free space

[0228] handle

[0229] Storage facility

[0230] Storage area

[0231] outside

[0232] Edge wall first lateral wall second lateral wall

[0233] front wall

[0234] handle

[0235] Free space

[0236] Anti-slip device

[0237] Footbridges

[0238] Mounting recess

[0239] Storage recess

[0240] Sweeper (second embodiment)

[0241] chassis

[0242] Rear wheel setup

[0243] Front wheel setup

[0244] Side brush

[0245] Main sweeper roller

[0246] handle

[0247] Waste container

[0248] Housing

[0249] Suction fan device

[0250] Switch

[0251] Recording

[0252] Battery top

[0253] opening

[0254] Channel facility

[0255] Filter device

[0256] Housing

[0257] Bridge

[0258] Storage facility

[0259] Storage area

[0260] Top

[0261] edge wall

[0262] Mounting recess

[0263] push bar

Claims

A sweeping machine comprising a chassis (12; 182), a rear wheel device (20; 184) and a front wheel device (22; 186) which are arranged on the chassis (12; 182) and which define a setup plane (26) of the sweeping machine on a surface (24) to be cleaned, a push bar (42; 228) which is arranged on the chassis (12; 182), a sweeping material container (108; 194) which is seated on the chassis (12; 182), at least one main sweeping roller (54; 190) which is arranged on the chassis (12; 182) so as to be rotatable about a rotation axis (56), a height adjustment device (72) via which a height position of the rotation axis (56) of the at least one main sweeping roller (54; 190) relative to the setup plane (26) can be adjusted, and a handle (84; 192), which is connected to the chassis (12;182) is pivotable, which is mechanically coupled to the height adjustment device (72), and via which a height position of the rotation axis (56) relative to the installation plane (26) can be locked and adjusted by an operator, characterized in that the handle (84; 192) has an end position (98) in which the at least one main sweeping roller (54; 190) is spaced from the installation plane (26). Sweeping machine according to claim 1, characterized by at least one of the following: a pivoting movement of the handle (84; 192) out of the end position (98) reduces a height distance of the rotation axis (56) from the installation plane (26); a pivoting movement of the handle (84; 192) out of the end position (98) increases a contact pressure of the at least one main sweeping roller (54; 190) against the surface (24) to be cleaned; There is exactly one end position (98) in which the at least one main sweeping roller (54; 190) is spaced from the installation plane (26); in each fixing position of the handle (84; 192) outside the end position (98), the at least one main sweeping roller (54; 190) touches the installation plane (26); a pivoting movement of the handle (84; 192) out of the end position (98), in which the at least one main sweeping roller (54; 192) is spaced from the installation plane (26), is away from the installation plane (26).Sweeping machine according to claim 1 or 2, characterized by at least one of the following: a pivot axis (64) for the pivoting mobility of the handle (84; 192) relative to the chassis (12; 182) is parallel to the rotation axis (56) of the at least one main sweeping roller (54; 192); a pivot axis (64) for the pivoting mobility of the handle (84; 192) relative to the chassis (12; 182) is parallel to a wheel axis (36) of the rear wheel device (20); a pivot axis (64) for the pivoting mobility of the handle (84; 192) relative to the chassis (12; 182) is transverse and in particular perpendicular to a forward travel direction (28) of the sweeping machine;. A pivot axis (64) of the pivoting mobility of the handle (84; 192) relative to the chassis (12; 182) is parallel to a pivot axis (44) of the push bar (42), wherein the push bar (42) is pivotable relative to the chassis (12; 182). Sweeping machine according to one of the preceding claims, characterized by at least one stop (100) against which the handle (84; 192) and / or an element of the height adjustment device (72) rests in the end position (98), in which the at least one main sweeping roller (54; 192) is spaced from the installation plane (26). Sweeping machine according to one of the preceding claims, characterized in that the handle (84; 192) is assigned a track device (88), which in particular comprises a circular path when the handle (84; 192) can be pivoted relative to the chassis (12; 192).Sweeping machine according to one of the preceding claims, characterized in that the height adjustment device (72) comprises a swinging device (60) which is mounted on the chassis (12; 182) for rotation about a rotation axis (64), wherein the at least one main sweeping roller (54; 190) is held on the swinging device (60) for rotation about the rotation axis (56). Sweeping machine according to claim 6, characterized by at least one of the following: the rotation axis (64) of the swinging device (60) is spaced from the rotation axis (56) of the at least one main sweeping roller (54; 190); the rotation axis (64) of the swinging device (60) and the rotation axis (56) of the at least one main sweeping roller (54; 190) are oriented parallel to one another. Sweeping machine according to claim 6 or 7, characterized in that the handle (84; 192) is connected to the swinging device (60), in particular to at least one of the following: the handle (84; 192) is rigidly connected to the swinging device (60); the handle (84; 192) is eccentrically connected to the swinging device (60) with respect to the rotational axis (64) of the swinging device (60).Sweeping machine according to one of claims 6 to 8, characterized in that the swinging device (60) has a first region (66), a second region (68) and a third region (70), wherein the second region (68) lies between the first region (66) and the third region (70) and the swinging device (60) is held on the chassis (12; 182) at the second region (68) so as to be rotatable about the axis of rotation (64), wherein the at least one main sweeping roller (54; 190) is held on the first region (66), and wherein the handle (84; 192) is connected to the swinging device (60) at the third region (70).Sweeping machine according to one of the preceding claims, characterized in that the handle (84; 192) is assigned a plurality of discrete positions at which the handle (84; 192) can be fixed with respect to its pivoting movement, wherein a discrete position is assigned to a specific height position of the rotation axis (56) relative to the installation plane (26). Sweeping machine according to one of the preceding claims, characterized in that the handle (84; 192) comprises a positive-locking element (92) which serves to establish a pivoting position of the handle (84; 192) relative to the chassis (12; 182) and, in particular, to establish a height position of the rotational axis (56) of the at least one main sweeping roller (54; 190) relative to the installation plane (26). Sweeping machine according to claim 11, characterized in that the positive-locking element (92) is movably and, in particular, linearly displaceably mounted on a rod (86), wherein the handle (84; 192) is mechanically connected to the height adjustment device (72) via the rod (86).Sweeping machine according to claim 11 or 12, characterized by at least one of the following: the form-locking element (92) is designed as a sleeve, which in particular sits on a rod (86); on a track device (88) on which the handle (84; 192) is movable, one or more counter-elements (94) for the form-locking element (92) are arranged for a form-locking connection, wherein in the case of a form-locking connection, pivoting mobility of the handle (84; 192) relative to the chassis (12; 182) is blocked; the form-locking element (92) is spring-loaded by a spring device (96), wherein in order to cancel a form-locking connection, an operator must overcome a spring force of the spring device (96) by moving the form-locking element (92). Sweeping machine according to one of the preceding claims, characterized in that the chassis (12; 182) has a first region (74) on which the height adjustment device (72), the at least one main sweeping roller (54; 190), and the handle (84; 192) are arranged, and a second region (76) on which the dirt container (108; 194) is held, wherein the second region (76) follows the first region (74) in a longitudinal direction (18) of the chassis (12; 182). Sweeping machine according to one of the preceding claims, characterized in that the at least one main sweeping roller (54; 190) is positioned between rear wheels (30, 32) of the rear wheel device (20; 184) on the chassis (12; 182).Sweeping machine according to one of the preceding claims, characterized in that a depositing device (148; 218) with a depositing surface (150; 220) for one or more objects is provided, wherein the depositing device (148; 218) is held by the chassis (12; 182) and is parallel to the installation plane (26) or is inclined at most at an angle of 10° to the installation plane (26). Sweeping machine according to one of the preceding claims, characterized by a suction fan device (198), by means of which an interior of the sweeping material hopper (194) can be subjected to a negative pressure flow, and by a filter device (212) for the negative pressure flow. Sweeping machine according to one of the preceding claims, characterized by a design as a hand-guided sweeping machine, which can be guided over the floor (24) to be cleaned via the push bar (42; 228).

Images