JP6914224B2 - Suction foot assembly for floor cleaners - Google Patents

Description

The present invention is a suction foot assembly for a floor cleaner configured to move over the floor to be cleaned, the suction foot base, with front and rear seal lips from the suction foot base. The suction foot base and the holding frame, the edges of the front and rear seal lips extending away from each other and away from the suction foot base, extend in the osculating plane. The holding frame has a first end and a second end located on the opposite side so that the first end of the holding frame is attached to the cleaner frame of the floor cleaner. The second end of the holding frame is configured to have a swivel joint through which the suction footbase can swivel around the first swivel axis. A holding frame and a support arm coupled to the portion, wherein the first end of the support arm extends to the first end of the holding frame parallel to the first swivel axis. A fourth swivel axis that is rotatably coupled around the swivel axis of 3 and whose second end of the support arm, located on the opposite side, extends parallel to the first swivel axis. With a support arm that is coupled to the suction foot base so that it can swivel around, with a fourth swivel axis positioned perpendicular to the osculating plane from the first swivel axis. With respect to the suction foot assembly, wherein the support arm creates a first spacing between the third swivel axis and the fourth swivel axis in the working state of the suction foot assembly. The present invention further relates to a floor cleaner with such a suction foot assembly.

General-purpose floor cleaners, especially cleaning suction machines, have a traveling mechanism that moves the floor cleaner onto the floor surface to be cleaned, and the floor cleaner frame of the floor cleaner engages with the floor surface to be cleaned. A cleaning device that can be combined and supplies the cleaning liquid to the floor surface is provided. In addition, such floor cleaners have a so-called suction foot base, optionally with a suction foot body, which is located behind the cleaning device in the direction of travel and supplied. It is configured to suck the cleaning liquid from the floor again. Therefore, the suction foot base or its suction foot body has two seal lips extending substantially parallel to each other from the suction foot base, and the edges of both seal lips separated from the suction foot base are one. It extends in a common contact plane, which forms a suction passage between the two seal lips upon contact of the seal lips. Negative pressure is supplied to the suction passage through the suction foot base by a negative pressure source such as a suction turbine provided in the floor cleaner, whereby the cleaning liquid can be sucked from the floor surface.

A problem with such suction foot assemblies is that dirt builds up in the area of the suction passage and this dirt must be removed on a regular basis. However, the area of the suction passage between the seal lips is difficult to approach due to the contact plane facing the floor to be cleaned. Therefore, based on the prior art, there is also known a configuration in which the suction foot base is held by the floor cleaner so that it can turn around a horizontal axis. However, cleaning the seal lip or suction passage is difficult, as this swivel often requires a great deal of force as well as multiple steps to unlock first and then swivel.

Therefore, starting from the prior art, the subject of the present invention is a suction foot that can be easily swiveled from a working state in which the contact plane of the seal lip extends parallel to the plane of the floor surface to be cleaned to a cleaning state. To provide an assembly.

This problem is solved by the suction foot assembly according to claim 1. This challenge is further solved by a floor cleaner fitted with such a suction foot assembly.

The suction foot assembly according to the present invention can reversibly shift from the working state to the cleaning state, and in the cleaning state, the support arm is placed between the third swivel axis and the fourth swivel axis. Produces a second interval that is different from the interval.

The suction foot base is swiveled by the change in spacing between the ends of the support arms, and the suction foot assembly according to the present invention makes it particularly easy to clean the seal lip and the suction passage formed between both seal lips. can do. Therefore, the suction foot assembly is reversibly shifted from the working state to the cleaning state by turning the suction foot base around the first turning axis, and in the cleaning state, the seal lip turns away from the floor surface to be cleaned. It is allowed and the operator can easily access the suction passage for cleaning purposes.

In a preferred embodiment of the suction foot assembly, the support arm has a first arm portion and a second arm portion, and the first arm portion and the second arm portion are swivelly coupled. In the portion, the second swivel axis extending parallel to the first swivel axis is rotatably connected to each other. The end of the first arm portion away from the swivel coupling portion is coupled to the holding frame so that it can swivel around the third swivel axis, whereas the swivel coupling of the second arm portion. The end portion away from the portion is coupled to the suction foot base so as to be able to swivel around the fourth swivel axis. Further, a stopper is provided, and the stopper performs a swivel motion of the first and second arm portions about the second swivel axis, and the second swivel axis makes the third and fourth swivel axes. It is restricted so that it can only be separated from the plane extending through it up to the set interval. In the suction foot assembly, a first tensioning element is finally provided, and the first tensioning element is an end portion of the first and second arm portions separated from the second swivel axis. Pull towards each other.

At this time, turning is facilitated by forming a toggle device mechanism between the first arm portion and the second arm portion, and the swivel joint portion is located at a position where its movement is restricted by the stopper. When moved beyond the plane defined by the third and fourth swivel axes, the first tensioning element causes a suction footbase centered on the first swivel axis and relative to the holding frame. The turning motion of is at least easier. This significantly reduces the force required for turning or the number of work steps required for turning. With the first tensioning element properly dimensioned, it is sufficient to first lightly lift the suction footbase, and with this configuration, the first and second arm portions. The swivel connection between and is pressed across the plane defined by the third and fourth swivel axes by contact with the element in the floor cleaner, thus activating the toggle device mechanism and further swivel motion. , Virtually done naturally. The suction foot assembly can have an operating lever to release the toggle device mechanism, and if configured in this way, it is possible to omit lifting the suction foot base for introducing a turning motion. This operating lever can preferably be used in a relatively heavy suction foot base. This makes access to the suction passage extremely strong and easy, resulting in low equipment costs.

In another preferred embodiment, the support arm has a first arm portion and a second arm portion. One end of the first arm portion is rotatably coupled to the first end of the holding frame about a third swivel axis. One end of the second arm portion is coupled to the suction foot base so that it can swivel around the fourth swivel axis. The first arm portion is reversibly movable with respect to the second arm portion along one common longitudinal axis so that the length of the support arm is variable. The change in the length of the support arm causes a transition from the working state to the cleaning state, or in the opposite direction. The support arm has a force that promotes aerodynamic, hydraulic or mechanical (eg, in the form of a spring) change in the length of the support arm and thus the rotation of the suction footbase around the first swivel axis. Can be added. Further, the support arm can have a lock, and the operation of this lock introduces energy release from the energy accumulator. This can reduce the force required for turning or the number of work steps required for turning.

In a preferred embodiment, at least one of the arm portions is adjustable in length, and this adjustment is made particularly using an adjusting wheel that can have threads. Thereby, at the position of the arm portion determined by the stopper, the angle formed by the contact plane of the suction foot base with respect to the floor surface to be cleaned can be adjusted. The stopper may be formed so that the suction foot base is swiveled by an angle larger than 90 ° with respect to the working state in the cleaning state. Preferably, the suction foot assembly has a tilt indicator, which is used specifically for adjusting the contact plane with respect to the floor surface to be cleaned. Therefore, the tilt display device may have a pointer located at the second end of the holding frame and a marking located on the suction foot base. The tilt indicator makes it easy to adjust the length of the first or second arm portion, especially if the angle between the contact plane and the floor changes based on, for example, a worn bearing. , Advantageous.

According to a preferred embodiment, the fourth swivel axis is located larger than the first swivel axis and spaced from the contact plane. In particular, the support arm is arranged above the holding frame in the working state. In this embodiment, the transition to the cleaning state or the swivel of the suction foot base is produced by shortening the support arm. In this embodiment, the support arm is easily accessible for maintenance work.

In an alternative embodiment, the first swivel axis is located larger than the fourth swivel axis and spaced from the contact plane. In such a configuration, in particular, the support arm is located below the holding frame in the working state. In this embodiment, the transition to the cleaning state or the swivel of the suction foot base is produced by the extension of the support arm. In this way, the suction footbase preferably avoids obstacles located just above the floor surface to be cleaned, especially by limited swivel around the first swivel axis. be able to.

In another preferred embodiment, the suction foot base is provided with a support element, which is configured to be movable on the floor surface and has a first swivel view in the osculating plane. It is located on the side of the axis facing the holding frame. These support elements may be formed specifically as a support wheel or as a slider. These support elements help support the weight of the suction footbase against the floor to be cleaned during the exercise created by the toggle device mechanism.

According to another preferred embodiment, the holding frame has a first swivel arm, the first swivel arm of the holding frame which is swivelable about a first swivel arm axis. It is pivotally attached to one end, and the first swivel arm connects the first end of the holding frame to the second end of the holding frame, and the first swivel arm axis is , Extends parallel to the first swivel axis. With this configuration, the height adjustableness of the suction footbase can be easily achieved, which in particular allows for the so-called lifted and displaced (ausgehoben) position of the suction footbase. In this position, the osculating plane of the suction footbase is indeed approximately parallel to the floor to be cleaned, but is spaced away from the floor to be cleaned.

In another preferred embodiment, the first swivel arm can swivel about the second swivel arm axis with respect to the first end of the holding frame, and the second swivel arm axis is the second swivel arm axis. It extends perpendicular to the swivel arm axis of 1. In this variation, the second end or suction foot base can perform a lateral turning motion with respect to the traveling direction, thereby avoiding damage to the suction foot assembly due to obstacles.

In another preferred embodiment, the holding frame has a second swivel arm, wherein the second swivel arm is a first swivel of the holding frame about a first swivel arm axis. It is pivotally attached to an end and the second swivel arm connects the first end of the holding frame to the second end of the holding frame. Thereby, the second swivel arm forms the second leg of the holding frame. The second swivel arm is rotatable about the third swivel arm axis with respect to the first end of the holding frame, and the third swivel arm axis is relative to the second swivel arm axis. It extends in parallel. The first swivel arm is coupled to the second end of the holding frame so that it can swivel around the fourth swivel arm axis, and the second swivel arm is centered on the fifth swivel arm axis. It is rotatably coupled to the second end of the holding frame so that the fourth and fifth swivel arm axes extend parallel to the second swivel arm axis. In this variation, the suction footbase is connected to the floor cleaner via a parallelogram or trapezoidal assembly, so the angular position of the suction footbase that the suction footbase takes when avoiding laterally with respect to the travel direction. Can be easily controlled.

Preferably, the distance between the fourth swivel arm axis and the fifth swivel arm axis is greater than the distance between the second swivel arm axis and the third swivel arm axis. The suction foot assembly can have two tensioning elements, each of which has a first end of the holding frame coupled to a second end of the holding frame, the first. The swivel axis is forced to be oriented parallel to the first swivel arm axis. At the central position of the holding frame, the legs of the holding frame, i.e., the first end, the second end, the first swivel arm and the second swivel arm may be arranged trapezoidally together or with each other. In particular, after the suction foot base has avoided obstacles laterally, at the end of the curve run or at the position where the suction foot base is lifted and displaced, the holding frame is centered using a second tensioning element. It can be moved to a position or centered.

According to another preferred embodiment, the suction footbase has a protrusion that extends perpendicular to the first swivel axis and has a swivel joint at the protrusion. It is formed so that the free end of the protrusion is rotatably coupled to the end of the second arm portion that is distant from the swivel coupling with the first arm portion. With such a configuration, a compact structure can be obtained.

In another preferred embodiment, a suction foot body is provided, the suction foot body is dissociably coupled to the suction foot base, and front and rear seal lips are attached to the suction foot body. ing. The support element described above may be located on the suction foot body instead of being located on the suction foot base. The suction foot base may have a recess for accommodating the suction connection of the suction foot, at which time the suction connection is provided to be connected to the suction device of the floor cleaner. The suction foot body can also have a suction passage defined by a seal lip and connected to a suction connection.

The challenges mentioned above are also solved by floor cleaners fitted with suction foot assemblies. At this time, the first end of the holding frame is attached to the cleaner frame of the floor cleaner.

Next, the present invention will be described with reference to the drawings showing only one preferred embodiment.

It is a side view which shows the floor cleaner which provided the 1st Embodiment of the suction foot assembly which concerns on this invention. It is a perspective view which shows the embodiment of FIG. It is a top view which shows a part of the Embodiment shown in FIG. It is a side view which shows the embodiment shown in FIGS. 1 to 3 in a working state. It is a side view which shows the support arm assembly of the embodiment shown in FIG. It is a side view which shows the embodiment shown in FIGS. 1 to 3 in a cleaning state. FIG. 5 is a side view schematically showing the embodiment shown in FIGS. 1 to 3 in a working state. It is a side view which shows the 2nd Embodiment in a working state. It is a side view which shows the 3rd Embodiment in a working state. It is a side view which shows the 4th Embodiment schematicly in the working state.

In FIG. 1, a part of the floor cleaner 1 provided with the first embodiment of the suction foot assembly 3 according to the present invention is shown schematically in a side view. The suction foot assembly 3 is attached to the rear end portion of the floor cleaner 1 and is in the working state in the figure shown in FIG.

The suction foot assembly 3 for the floor cleaner 1 according to the present embodiment includes a suction foot base 5, to which the suction foot body 7 is dissociably attached, and at this time, the front seal. The lip (not shown) and the seal lip 9 on the rear side are fixed to the suction foot body 7. The front seal lip and the rear seal lip 9 are located at intervals from each other, and in the present embodiment, extend in a direction away from the suction foot body 7 substantially in parallel with each other. The edges of the front and rear seal lips 9 away from the suction foot base 5 and suction foot body 7 extend in one common contact plane A (see FIG. 6), resulting in the suction foot assembly 3 In the working state of, the contact plane A coincides with the plane of the floor surface to be cleaned. Further, in the working state, the steering roller 11 held by the suction foot base 5 is in contact with the floor surface to be cleaned, so that the suction foot assembly 3 is supported.

A protrusion 13 is attached to the suction foot base 5 on the side opposite to the suction foot body 7, and the protrusion 13 is formed in a U shape in the present embodiment and is formed on the contact plane A. On the other hand, it extends vertically away from the suction foot base 5. The protrusion 13 forms a part of the swivel joint 15 that connects the suction foot base 5 to the holding frame 17, as described below.

Further, the suction foot assembly 3 includes a holding frame 17, which has a first end 19 and a second end 21 located on the opposite side. When the first end 19 is formed as a flange attached to the cleaner frame of the floor cleaner 1. The second end 21 of the holding frame 17 is formed by a shaft 25 extending along the first swivel axis 23, which shaft 25 extends through a hole in the protrusion 13. As a result, the shaft 25 and the hole form a swivel joint 15 formed in the protrusion 13, and the second end 21 of the holding frame 17 can swivel around the first swivel axis 23. It is connected to the suction foot base 5. Further, it can be recognized that the protrusion 13 extends perpendicularly to the first swivel axis 23.

The flange forming the first end 19 of the holding frame 17 also has holes, through which another shaft 27 extends. A first swivel arm 29 and a second swivel arm 31 are attached to both ends of another shaft 27, and at this time, the first and second swivel arms 29 and 31 are the first end portions. Based on the swivelability of the shaft 27 in the hole of the flange of 19, it is swivel about the first swivel arm axis 33 extending horizontally when the floor cleaner 1 is operated, and this first swivel arm The axis 33 extends parallel to the first swivel axis 23.

The first and second swivel arms 29, 31 connect the first end 19 of the holding frame 17 to the second end 21, thereby causing the first and second swivel arms 29, 31 to , And further pivoted to a shaft 25 forming the second end 21 as further described below.

Further, the first swivel arm 29 can swivel around the second swivel arm axis 35 with respect to the shaft 27 and thus with respect to the first end 19 of the holding frame 17, at this time the second. The swivel arm axis 35 extends perpendicular to the first swivel arm axis 33. Similarly, the second swivel arm 31 is pivotally attached to the shaft 27 so as to be swivelable around the third swivel arm axis 37, and at this time, the third swivel arm axis 37 is the second swivel arm axis. It extends parallel to 35 and thus perpendicular to the first swivel arm axis 33.

Further, the first swivel arm 29 is coupled to a shaft 25 forming the second end 21 of the holding frame 17 so as to be swivelable about the fourth swivel arm axis 39, and the second swivel arm 29 is swiveled. The arm 31 is coupled to the shaft 25 so as to be able to swivel around the fifth swivel arm axis 41, at which time the fourth swivel arm axis 39 and the fifth swivel arm axis 41 are the second and second swivel arm axes 41. It extends parallel to the swivel arm axes 35 and 37 of 3. At this time, it is recognized that the distance between the second swivel arm axis 35 and the third swivel arm axis 37 is smaller than the distance between the fourth swivel arm axis 39 and the fifth swivel arm axis 41. The first and second swivel arms 29, 31 together with the shafts 25, 27 form a trapezoidal assembly as a holding frame 17.

Using this trapezoidal assembly, the suction foot base 5 can perform vertical motion by swiveling around the first swivel axis 23 and the first swivel arm axis 33, and the second and third swivel axes. The assembly of the 4th and 5th swivel axes 35, 37, 39, 41 allows a motion parallel to the floor to be cleaned, however in this motion the angular position of the suction foot base 5 is this. It is fixed on a flat surface.

As can be recognized in FIGS. 1 and 6, a support element formed as a support vehicle 43 is attached to the suction foot base 5, and these support vehicles 43 can move on the floor surface to be cleaned. It is configured as follows. Further, the support vehicle 43 is arranged on the holding frame 17 side with respect to the first turning axis 23 when viewed in the contact plane A. The function of the support vehicle 43 will be described in more detail below.

In particular, as can be recognized in FIGS. 2, 4, 5 and 7 generally, the suction foot assembly 3 has a support arm 45, which the support arm 45 has a first arm portion 47 and a second arm portion 47. The arm portions 47 and 49 are rotatably coupled to each other around the second swivel axis 51 at the swivel coupling portion. At this time, the second swivel axis 51 extends parallel to the first swivel axis 23, and the suction foot base 5 is centered on the first swivel axis 23 at the second end of the holding frame 17. It is possible to turn relative to 21.

The second tensioning elements 59, 59a are shown in FIG. 3, and these second tensioning elements 59, 59a center the holding frame 17 at the position where the suction foot base 5 is lifted and displaced. can do.

Further, as can be recognized from FIGS. 4 and 5, the end portion of the first arm portion 47 away from the swivel coupling portion between the arm portions 47 and 49, and thus the second swivel axis 51, is the holding frame 17. The first arm portion 47 is rotatably coupled to the first end 19 of the It can be centered and swiveled relative to the first end 19. In a similar manner, the end of the second arm portion 49 away from the swivel coupling with the second swivel axis 51 is rotatably coupled to the suction foot base 5, at this time. Can swive relative to the suction foot base 5 about a fourth swivel axis 55 extending parallel to the first and second swivel axes 23,51. At this time, the fourth swivel axis 55 is located at a distance D from the first swivel axis 23 when viewed in a direction perpendicular to the contact plane A. This is realized in the present embodiment by the free end of the protrusion 13 provided on the suction foot base 5 being rotatably coupled to the corresponding end of the second arm portion 49. There is.

Further, in the preferred embodiment described herein, the length of the second arm portion 49 can be adjusted using the adjusting wheel 57. Therefore, the second arm portion 49 and the adjusting wheel 57 can have a thread. FIG. 4 also shows a tilt indicator with a pointer 67 at the second end of the holding frame 17 and a marking 69 at the suction foot base 5, thereby providing a plane of contact with the floor to be cleaned. The angle of A can be easily adjusted, especially by using the adjusting wheel 57.

A first tensioning element formed as a coil spring 61 is provided between the first arm portion 47 and the second arm portion 49 of the support arm 45, and the first tensioning element of the support arm 45 is provided with a first tensioning element. Both ends are pivotally attached to the first and second arm portions 47, 49 apart from the second swivel axis 51. As a result, preloads are applied to the ends of the arm portions 47, 49 away from the second swivel axis 51, and as a result, the arm portions 47, 49 are separated from the second swivel axis 51. The ends try to turn towards each other.

Finally, the support arm 45 is provided with a stopper 63 on the second arm portion 49 in the present embodiment, and the stopper 63 is an arm portion 47 away from the second swivel axis 51. , 49 limits the reciprocal turning motion generated by the coil spring 61 at the ends. As a result, the second swivel axis 51 can only be separated from the plane X extending through the third and fourth swivel axes 53, 55 up to a set interval. Plane X is shown in FIG. In order to allow both ends of the arm portions 47, 49 away from the second swivel axis 51 to swivel toward each other, the second swivel axis 51 must first be moved across this plane X. is necessary.

Thereby, the structure including both arm portions 47, 49, the stopper 63 and the coil spring 61 forms a toggle device mechanism, and this toggle device mechanism is attached to the suction foot base 5 and the suction foot base 5. The suction foot body 7 is kept in a working state against the action of the coil spring 61, and in this working state, the contact plane A is relative to the plane of the floor surface to be cleaned in which the suction foot assembly 3 is moved above it. It is oriented in parallel. At this time, the adjusting wheel 57 can adjust the accurate angular position of the suction foot base 5 in this working state.

The mode of action of the above-described embodiment of the suction foot assembly according to the present invention is as follows.

The work shown in FIGS. 4 and 5 in which the suction foot base 5 and the suction foot body 7 provided on the suction foot base 5 have the first spacing between the third and fourth swivel axes 53 and 55. When it is desired from the state that the suction passage formed between the seal lips 9 is easily accessible, the user is provided with suction foot bases 5 at both ends. It can be easily lifted using the grip 65. Alternatively, the grip 65 may be fixed to the suction foot body 7. As a result, both ends of the arm portions 47 and 49, that is, both ends of the arm portions 47 and 49 that are rotatably connected to each other about the second swivel axis 51, are connected to a part of the cleaner frame or the floor. It comes into contact with one structure of the cleaner 1 and is pressed downward by this. As a result, the second swivel axis 51 is pressed downward beyond the plane X extending through the third and fourth swivel axes 53, 55. When the second swivel axis 51 is located on the plane X facing the floor to be cleaned, the thought points of the toggle device assembly formed by the arm portions 47, 49 are exceeded. The coil spring 61 pulls both ends of the arm portions 47 and 49 away from the second swivel axis 51 toward each other. As a result, the protrusion 13 in the suction foot base 5 is again swiveled toward the holding frame 17 as can be recognized in FIG. At this time, the distance between the third turning axis 53 and the fourth turning axis 55 is shortened to the second distance.

During this turning motion of the suction foot base 5, the support vehicle 43 comes into contact with the floor surface and rolls over the floor surface, which can reduce resistance to turning and protect the floor surface from damage. can.

Thereby, in this embodiment of the suction foot assembly 3, turning from the working state to the cleaning state is greatly facilitated based on the toggle device assembly with the first tensioning element formed as the coil spring 61.

A schematic side view of this embodiment is also shown in FIG. The support arm 45 is substantially arranged on the holding frame 17, and when the holding frame 17 is unlocked, the suction foot base 5 swivels around the first swivel axis 23 in a cleaning state. .. At this time, the seal lip 9 and the suction passage become easily accessible for cleaning.

In order to return the suction foot assembly to the working state and turn it, it is only necessary to press the suction foot assembly downward toward the floor surface using the grip 65. At this time, the arm portions 47 and 49 reach the positions shown in FIGS. 4 and 5 again, and at this position, the second swivel axis 51 is located on the side of the plane X away from the floor surface.

In a second embodiment of the suction foot assembly according to the present invention, schematically shown in FIG. 8, the support arm 45 is located approximately below the holding frame 17, and the fourth swivel axis 55 is in contact. It is arranged between the plane A and the first swivel axis 23. Unlike the support arm of the first embodiment, the support arm 45 has a stopper 63 that sets a first distance between the third swivel axis 53 and the fourth swivel axis 55 in the working state, in addition to the stopper 63. It has yet another stopper 71. This separate stopper 71 sets a second spacing between the third swivel axis 53 and the fourth swivel axis 55 when the suction foot assembly is in the cleaning state. When this second interval is larger than the first interval, the suction foot base 5 or the contact plane A is swiveled rearwardly and upwardly in a cleaning state with respect to the floor surface to be cleaned. Also in this second embodiment, the change in the distance between the third swivel axis 53 and the fourth swivel axis 55 is that the force toward the floor surface to be cleaned is the second force between the arm portions 47 and 49. It can be produced by being added to the swivel axis 51 of.

The third embodiment of the suction foot assembly according to the present invention, which is schematically shown in FIG. 9, differs from the first and second embodiments in the following points. That is, in the third embodiment, the support arm 45 provided with the arm portions 47 and 49 is provided, and at this time, the first arm portion 47 is telescopically guided in the cylinder element 73, and the cylinder element 73 is provided at the end of the second arm portion 49, away from the fourth swivel axis 55. Further, a lock element 75 to which a spring preload is applied is provided in the cylinder element 73, and the lock element 75 defines an end portion of the first arm portion 47 that enters the cylinder element 73. The entire support arm 45 formed from the first and second arm portions 47, 49 at this position has a first maximum length, thereby the third and third and third. The fourth swivel axes 53, 55 have a first spacing. The lock ensures that the suction foot base 5 is kept in working condition and that the rotation of the suction foot base 5 about the first swivel axis 23 is locked.

However, when a force directed toward the floor surface to be cleaned is applied to the lock element 75 against the action of the spring preload, the first arm portion 49 is relative to the second arm portion 49. The arm portion 47 is unlocked and the support arm 45 can be shortened, whereby the spacing between the third swivel axis 53 and the fourth swivel axis 55 is also shortened to the second spacing. NS. This is linked to the turning motion of the suction foot base 5 about the first turning axis 23, and at this time, the suction foot base 5 turns upward to the cleaning state, and this embodiment. Also, the suction passage formed between the seal lips becomes easily accessible.

In order to return the suction foot assembly to the working state again, the suction foot base 5 needs to be swiveled downward again to the floor to be cleaned, at which time the lock element 75 is based on the spring preload. When both arm portions 47, 49 are separated from each other and the third and fourth swivel axes 53, 55 again have a first distance between them, they are locked again.

The fourth embodiment, which is schematically shown in FIG. 10, also has a support arm 45 whose length can be changed, and the support arm 45 is different from the third embodiment, however, and the holding frame 17 is used. It is located almost below. Also in this embodiment, one end of the first arm portion 47 is telescope-guided within the cylinder element 73 of the second arm portion 49, and the end of the first arm portion 47 is The lock element 75, which is also spring preloaded in the cylinder element 73, can be locked in a predetermined position, at which the length of the support arm 45 is minimal, and thus the third. The distance between the swivel axis 53 and the fourth swivel axis 55 corresponds to the first spacing.

Also in the present embodiment, when the suction foot assembly is lifted, the upward end of the lock element 75 is brought into contact with a part of the floor cleaner, which is achieved with respect to the lock element 75. When a force is applied in the direction of the floor surface to be cleaned, the arm portions 47 and 49 are unlocked, and the length of the support arm 45 is extended to the second length when the suction foot base 5 is raised. This corresponds to the second distance between the third swivel axis 53 and the fourth swivel axis 55. This extension of the spacing is again tied to the turning motion of the suction foot base 5, so that the suction foot base 5 reaches a cleaning state from the working position that is well accessible to the suction passage.

In both the third embodiment and the fourth embodiment, the cylinder element 73 and the end portion of the first arm portion 47 guided in the cylinder element 73 may be configured as follows. That is, in this case, a force is applied to the end of the first arm portion 47 in the form of aerodynamic or hydraulic depending on the medium, whereby the end of the first arm portion 47 is applied to the cylinder element 73. The length of the support arm 45 and the distance between the third swivel axis 53 and the fourth swivel axis 55 can be varied. It is also possible to mechanically apply a force to the end of the first arm portion 47, for example using a spring. This force is preferably supported so that the third and fourth swivel axes 53, 55 are moved to a position with a second spacing between them, i.e. to a position where the suction foot assembly is in the cleaning state. The arm 45 is oriented so that a preload is applied. This facilitates an upward turn to this position, whereas a downward turn to the working state is facilitated by the weight of the suction foot assembly.

In all of the embodiments described above, it is common that the length-changeable support arm 45 facilitates turning of the suction foot base 5. Further, the support arm 45 ensures that, in working conditions, the suction footbase 5 and its contact plane A are oriented in the desired form to the plane of the floor to be cleaned.

1 Floor cleaner 3 Suction foot assembly 5 Suction foot base 7 Suction foot body 9 Rear seal lip 11 Steering roller 13 Protruding part 15 Swing joint 17 Holding frame 19 1st end 21 2nd end 23 1st swivel Axis 25 Axis 27 Axis 29 1st Swivel Arm 31 2nd Swivel Arm 33 1st Swivel Arm Axis 35 2nd Swivel Arm Axis 37 3rd Swivel Arm Axis 39 4th Swivel Arm Axis 41 Fifth Swivel Arm Axis 43 Support Vehicle 45 Support Arm 47 First Arm Part 49 Second Arm Part 51 Second Swivel Axis 53 Third Swivel Axis 55 Fourth Swivel Axis 57 Adjusting Vehicle 59 Second Tension Element 61 Cylinder Spring, 1st tensioning element 63 Stopper 65 Grip 67 Pointer 69 Marking 71 Stopper 73 Cylinder element 75 Lock element

Claims (13)

A suction foot assembly (3) for the floor cleaner (1) configured to move over the floor to be cleaned.
In the suction foot base (5), the front and rear seal lips (9) extend at intervals from each other so as to be separated from the suction foot base (5), and the front and rear seal lips extend. The suction foot base (5) and the suction foot base (5) having an edge portion of (9) separated from the suction foot base (5) extending in the contact plane (A).
A holding frame (17), the holding frame (17) having a first end (19) and a second end (21) located on the opposite side, said holding. The first end (19) of the frame (17) is configured to be attached to the cleaner frame of the floor cleaner (1), and the second end (21) of the holding frame (17). ) Has a swivel joint (15) so that the suction foot base (5) can swivel around the first swivel axis (23) via the swivel joint (15). The holding frame (17), which is attached to the end (21) of the
The support arm (45), wherein the first end of the support arm (45) is attached to the first end (19) of the holding frame (17) and the first swivel axis (23). The second end of the support arm (45), which is rotatably coupled around a third swivel axis (53) extending parallel to the support arm (45) and located on the opposite side, is the second end. It is coupled to the suction foot base (5) so that it can swivel around a fourth swivel axis (55) extending parallel to the swivel axis (23) of 1, and the fourth swivel axis (55). ) Is located at a distance perpendicular to the contact plane (A) from the first swivel axis (23), and a support arm (45).
Is equipped with
In the working state of the suction foot assembly (3), the support arm (45) creates a first distance between the third swivel axis (53) and the fourth swivel axis (55). ,
In the suction foot assembly (3)
The suction foot assembly (3) can reversibly shift from the working state to the cleaning state, and in the cleaning state, the support arm (45) has the third swivel axis (53) and the fourth swivel axis (53). A suction foot assembly (3) for a floor cleaner (1), characterized in that a second spacing different from the first spacing is created between the swivel axis (55). The support arm (45) has a first arm portion (47) and a second arm portion (49), and the first arm portion (47) and the second arm portion (49). ) Is rotatably coupled to each other around the second swivel axis (51) extending parallel to the first swivel axis (23) in the swivel coupling portion.
The end of the first arm portion (47) away from the swivel coupling portion is rotatably coupled to the holding frame (17) about the third swivel axis (53). Further, the end portion of the second arm portion (49) separated from the swivel coupling portion is coupled to the suction foot base (5) so as to be swivelable around the fourth swivel axis (55). Ori,
A stopper (63) is provided, and the stopper (63) performs a turning motion of the first and second arm portions (47, 49) about the second turning axis (51). The second swivel axis (51) is restricted so that it can only be separated by a set interval from the plane extending through the third and fourth swivel axes (53,55). A first tensioning element (61) is provided, and the first tensioning element (61) is a second swivel of the first and second arm portions (47,49). Pull the ends away from the axis (51) towards each other,
The suction foot assembly (3) according to claim 1. The support arm (45) has a first arm portion (47) and a second arm portion (49), and one end portion of the first arm portion (47) is the first arm portion (47). It is coupled to the first end portion (19) of the holding frame (17) so as to be able to swivel around the swivel axis (53) of 3, and one end portion of the second arm portion (49). Is rotatably coupled to the suction foot base (5) about the fourth swivel axis (55), and the first arm portion (47) is the second arm portion (49). The suction foot assembly (3) according to claim 1, wherein the support arm (45) can be reversibly moved along one common longitudinal axis with respect to the). .. At least one of the arm portions (47,49) is adjustable in length.
The suction foot assembly (3) according to claim 2 or 3. The fourth swivel axis (55) is larger than the first swivel axis (23) and is located at a distance from the contact plane (A).
The suction foot assembly (3) according to any one of claims 1 to 4. The first swivel axis (23) is larger than the fourth swivel axis (55) and is located at a distance from the contact plane (A).
The suction foot assembly (3) according to any one of claims 1 to 4. The suction foot base (5) is provided with a support element (43), which is configured to be movable on the floor surface and is viewed in the contact plane (A). Therefore, it is arranged closer to the holding frame (17) than the first swivel axis (23).
The suction foot assembly (3) according to any one of claims 1 to 6. The holding frame (17) has a first swivel arm (29), and the first swivel arm (29) can swivel around a first swivel arm axis (33). The first swivel arm (29) is pivotally attached to the first end (19) of the holding frame (17), and the first swivel arm (29) is the first end (19) of the holding frame (17). Is coupled to the second end (21) of the holding frame (17), and the first swivel arm axis (33) is parallel to the first swivel axis (23). Extending
The suction foot assembly (3) according to any one of claims 1 to 7. The first swivel arm (29) can swivel about the second swivel arm axis (35) with respect to the first end (19) of the holding frame (17), and is said to be the first. The swivel arm axis (35) of 2 extends perpendicular to the first swivel arm axis (33).
The suction foot assembly (3) according to claim 8. The holding frame (17) has a second swivel arm (31), and the second swivel arm (31) can swivel around the first swivel arm axis (33). The second swivel arm (31) is pivotally attached to the first end (19) of the holding frame (17), and the second swivel arm (31) is the first end (19) of the holding frame (17). ) Is coupled to the second end (21) of the holding frame (17).
The second swivel arm (31) is rotatable about the third swivel arm axis (37) with respect to the first end (19) of the holding frame (17), and is said to be the first. The swivel arm axis (37) of 3 extends parallel to the second swivel arm axis (35).
The first swivel arm (29) is rotatably coupled to the second end (21) of the holding frame (17) so as to be swivelable about a fourth swivel arm axis (39). The second swivel arm (31) is rotatably coupled to the second end (21) of the holding frame (17) so as to be swivelable about a fifth swivel arm axis (41). The fourth and fifth swivel arm axes (39, 41) extend parallel to the second swivel arm axis (35).
The suction foot assembly (3) according to claim 9. The suction foot base (5) has a protruding portion (13), and the protruding portion (13) extends perpendicularly to the first swivel axis (23) and the protruding portion. The swivel joint (15) is formed in (13), and the free end portion of the protrusion (13) is rotatably coupled to the support arm (45), or the second arm. The portion (49) is rotatably coupled to the end of the portion (49) away from the swivel coupling with the first arm portion (47).
The suction foot assembly (3) according to any one of claims 1 to 10. A suction foot body (7) is provided, the suction foot body (7) is dissociably coupled to the suction foot base (5), and the front and rear seal lips (9) are dissociated. , Attached to the suction foot body (7),
The suction foot assembly (3) according to any one of claims 1 to 11. The floor cleaner (1) includes a traveling mechanism for moving the floor cleaner on a floor surface to be cleaned, and a suction foot assembly (3) according to any one of claims 1 to 12. The floor cleaner (1), wherein the first end (19) of the holding frame (17) is attached to the cleaner frame of the floor cleaner (1).

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