Suction sweeper head assembly for a floor cleaning machine

Abstract

A suction sweeper assembly for mounting on a floor cleaning machine, having a suction sweeper, a suction sweeper holder having a coupling section, a suction sweeper connection extending between a coupling end and a machine end, wherein the machine end is designed to be mounted pivotably about a vertical axis on the floor cleaning machine, one of the coupling section and the coupling end has a pin section, the other of the coupling section and the coupling end has a first clamping element and a second clamping element, which are opposite one another, have free ends and extend concavely, such that a receiving section is formed between the clamping elements, in which the pin section is received, wherein the spacing between the free ends of the clamping elements is smaller than the spacing of the clamping elements in the receiving section, and one or both clamping elements are elastically deformable, such that the pin section can be brought in and out of the receiving section past the free ends perpendicular to its direction of extension.

Description

TECHNICAL FIELD

[0001] The invention relates to a suction foot assembly for mounting on a floor cleaning machine, having a suction foot with a base on which a front suction lip and a rear suction lip are mounted, which suction lips extend away from the base parallel to one another and spaced apart from one another, such that the suction lips and the base delimit a suction chamber, wherein the edges of the suction lips facing away from the base extend in a contact plane and are designed to rest on the ground surface to be cleaned, a suction foot holder mounted on the base, which has a coupling section, a suction foot connection which extends between a coupling end and a machine end, wherein the machine end is designed to be pivotably mounted on the floor cleaning machine, preferably about a vertical axis, and to a floor cleaning machine provided with such a suction foot assembly. BACKGROUND

[0002] Such suction foot assemblies are known from the prior art and are provided in floor cleaning machines which have a scrubbing platform in the area of which cleaning liquid is applied to the ground surface to be cleaned in order to remove dirt on the ground surface by means of the scrubbing platform. The suction foot arranged behind the scrubbing platform in the direction of movement of the floor cleaning machine serves to guide the dirt liquid again from the ground surface to be cleaned by means of a negative pressure source connected to a dirt liquid container in the floor cleaning machine.

[0003] To this end, it is known from the prior art that the suction foot of the floor cleaning machine is fastened to the machine-side suction foot connection by means of so-called handle screws. To this end, the suction foot connection has a long hole which opens rearward, whereby in the event of a collision of the suction foot projecting laterally beyond the floor cleaning machine with an object, the suction foot is pulled off the suction foot connection, so that no components of the suction foot or the holder are damaged. However, in order to prevent the suction foot from coming loose during travel, the operator has to apply a correspondingly greater manual force when tightening the handle screws. Here, although a tool-free operation is provided for the suction foot for routine cleaning, a tool is usually used to apply the corresponding force, if not intentionally.

[0004] In order to ensure constant and comprehensive contact of the suction foot with the ground surface to be cleaned even when driving over uneven ground, and at the same time also to maintain its relative position with respect to the ground, trapezoidal joint constructions are usually used to hold the suction foot. However, these trapezoidal joint constructions are usually constructed in a very complex manner. SUMMARY

[0005] Starting from the prior art, it is therefore the object of the present application to provide a suction comb assembly which allows the fastening of the suction comb on the machine in as simple a manner as possible, preferably without the use of tools, wherein the fastening is designed in such a way that it automatically releases in the event of a greater force without damaging the suction comb assembly.

[0006] According to the application, this object is achieved by a suction comb assembly for mounting on a floor cleaning machine, having a suction comb having a base on which a front suction lip and a rear suction lip are mounted, which suction lips preferably extend away from the base parallel to one another and are spaced apart from one another such that the suction lips and the base delimit a suction and discharge chamber, wherein the edges of the suction lips remote from the base extend in a contact plane and are designed to be placed on a ground surface to be cleaned, a suction comb holder connected with the base, having a coupling section, a suction comb connection extending between a coupling end and a machine end, wherein the machine end is designed to be mounted pivotably about a vertical axis on the floor cleaning machine, wherein one of the coupling section and the coupling end has a pin section which extends along a pin axis which extends parallel to the contact plane, wherein the other of the coupling section and the coupling end has a first clamping element and a second clamping element which have free ends opposite one another and extend concavely such that a receiving section is formed between the clamping elements in which the pin section is received, wherein the spacing of the free ends of the clamping elements from one another is smaller than the spacing of the clamping elements in the receiving section, and wherein one or both clamping elements can be elastically deformed such that the pin section can be moved into and out of the receiving section perpendicular to its extension.

[0007] Accordingly, the suction comb assembly according to the application firstly has a base which can preferably extend in an arcuate shape from a first end to a second end and on which a front suction lip and a rear suction lip are mounted, which suction lips preferably extend away from the base parallel to one another and also over the length between the first end and the second end of the base. Each of the suction lips also has an edge remote from the base which is arranged to be placed on a ground surface to be cleaned when the suction comb is to be used to draw off dirt liquid from the ground surface to be cleaned. Preferably, the front suction lip is embodied as slotted such that the slot extends away from the edge towards the base, so that dirt liquid located in front of the front suction lip can reach the suction and discharge chamber formed between the suction lips, which is also delimited by the base. The edges of the suction lips are mounted in such a way that they extend in a common contact plane in order to achieve the best possible sealing of the suction and discharge chamber when in operation.

[0008] According to the application it is further proposed that a suction head holder is provided on the base, which suction head holder has a coupling section, with which the suction head holder can be connected with a coupling end of a suction head connection, which is also part of the suction head assembly according to the application and which extends according to the application between the coupling end and a machine end. The machine end of the suction head assembly is designed in such a way that it can be mounted on a machine housing or a scrubbing platform of a floor cleaning machine, for example. The mounting is preferably designed in such a way that the suction head connection can be pivoted relative to the machine housing or the scrubbing platform about a vertical axis, which extends perpendicular to the contact plane, in particular when the suction head is arranged on a ground surface to be cleaned, and, if necessary, also perpendicular to the ground surface to be cleaned.

[0009] According to the application, the connection between the suction head holder and the suction head connection is designed in such a way that the coupling section of the suction head holder or the coupling end of the suction head connection has a pin section, which extends along a pin axis, which extends parallel to the contact plane.

[0010] Preferably, the pin axis can extend parallel to a connection line when the base extends from the first end to the second end, which connection line extends parallel to the contact plane between the ends of the base.

[0011] According to the application, when the coupling section has a pin section, a first clamping element and a second clamping element are provided on the coupling end, which are designed to be resilient and opposite one another, thus forming a receiving section therebetween. The clamping elements extend concavely from the respective other clamping element to form the receiving section and also have free ends, in the region of which the spacing between the clamping elements is smaller than in the receiving section. Finally, at least one of the clamping elements can be elastically deformed, so that the pin section can be guided in and out of the receiving section between the free ends.

[0012] According to the application, when the coupling end has a pin section, such clamping elements are provided on the coupling end section.

[0013] It can thus be achieved in the configuration according to the application that the suction head holder and the suction head connection can be connected to one another by the pin section "clicking in" between the clamping elements, wherein the use of a tool is not necessary. It is furthermore derived as an advantage that, when a force perpendicular to the pin section, which exceeds a certain threshold value, acts on the suction head as a result of the floor cleaning machine with the suction head assembly according to the application moving over an obstacle, the pin section is automatically released from the receiving section by the deformation of at least one of the clamping elements. As a result of this, the connection between the suction head holder and the suction head connection is released and damage to the suction head when coming into contact with the obstacle is prevented.

[0014] Finally, the connection between the suction tine holder and the suction tine connection is preferably designed such that the clamping element can be pivoted about the pin axis relative to the pin section, so that the vertical position of the suction tine relative to the suction tine connection can be changed automatically.

[0015] In a preferred embodiment, the pin section is provided on the coupling end of the suction tine connection and the coupling section has the clamping element on the suction tine holder. It is however also conceivable that the clamping element is mounted on the suction tine connection and the pin is mounted on the suction tine holder.

[0016] In a preferred embodiment of the application, an insertion body is mounted on one of the base and the suction tine holder, which extends along a first longitudinal axis, wherein a holding section is provided on the other of the base and the suction tine holder, in which a receiving region is formed, wherein the insertion body is received in the receiving region and in a pushed-in configuration, wherein the receiving region is designed such that it extends along a second longitudinal axis, wherein the second longitudinal axis extends parallel to the contact plane, wherein the insertion body and the receiving region are designed such that the insertion body can be pushed into the receiving region along the second longitudinal axis up to a pushed-in configuration which can be determined by a stop, to be received in the receiving region, wherein the first longitudinal axis and the second longitudinal axis coincide, and in the pushed-in configuration the insertion body can be pivoted about the second longitudinal axis relative to the holding section.

[0017] In this regard it is pointed out that the idea of having an insertion body on one of the suction tine holder and the base of the suction tine and a holding section with a receiving region on the other, into which the insertion body can be pushed up to a pushed-in configuration and subsequently be pivotably held, has independent inventive character. This idea and the embodiments described below are therefore not limited to use together with the other aspects described herein with respect to the suction tine assembly. Rather, the idea of the insertion body and the receiving region can be used extremely generally for pivotably mounting a suction tine on a holding device provided therefor.

[0018] In this preferred embodiment of the application, the connection between the suction tine or its base and the suction tine holder is designed such that on one of the suction tine and the suction tine holder an insertion body is provided which extends along a first longitudinal axis, while on the other of the suction tine and the suction tine holder a holding section is provided which has a receiving region, for example in the form of a recess, into which the insertion body is received and which assumes a pushed-in configuration there. Here, the receiving region of the holding section is designed such that it extends along a second longitudinal axis, such that the first longitudinal axis and the second longitudinal axis coincide when the insertion body is in the pushed-in configuration. Furthermore, the receiving region and the insertion body are designed such that the insertion body can be pivoted relative to the holding section about the first longitudinal axis. Furthermore, the insertion body can be pushed into the receiving region along the second longitudinal axis, preferably up to a stop, or pulled out of the receiving region.

[0019] Finally, in this preferred embodiment, the first longitudinal axis and the second longitudinal axis are arranged such that they extend parallel to the contact plane and parallel to the pin axis. In particular, the first longitudinal axis and / or the second longitudinal axis and the pin axis can be spaced apart from one another and parallel to one another.

[0020] Due to this arrangement and pivotability of the insertion body relative to the holding section, the base of the suction tine can be pivoted about the second axis such that the base is variably held not only in height relative to the suction tine connection, but also the orientation of the base of the suction tine relative to the ground surface to be cleaned can be changed independently of the vertical position of the base relative to the suction tine connection.

[0021] Furthermore, in this preferred embodiment, the suction tine can be released from the suction tine holder and connected thereto again in a simple manner. On the one hand, it is only necessary to move the suction tine by a movement along the longitudinal axis and thus laterally, thus pulling the insertion body out of the receiving region. On the other hand, for the connection, the suction tine can likewise be connected to the suction tine holder laterally by a movement, in such a way that the insertion body is pushed into the receiving region.

[0022] In another preferred embodiment, the insertion body has an inner space, wherein one of the inner space and the receiving region is connected to the suction chamber, wherein

[0023] - the other of the inner space and the receiving region is connected to an interface of the suction line, which is provided on the insertion body or the holding section, and in the pushed-in configuration the receiving region is connected to the inner space, or

[0024] - one of the inner space and the receiving region is connected to an interface of the suction line, which is provided on the insertion body or the holding section, and preferably in the pushed-in configuration the receiving region is connected to the inner space.

[0025] According to this preferred embodiment, the insert body has an inner space, and this inner space is connected to the evacuation chamber of the suction head when the insert body is mounted on the base, which is formed between the suction lip and the base. According to a first alternative of this embodiment, the receiving region can then be connected to the interface of the evacuation line, wherein the interface is arranged on the holding section, and the receiving region and the inner space are also connected to one another. It is then possible to achieve that the evacuation line leading to the contaminated liquid container is connected to the evacuation interface and subsequently applies a negative pressure to the evacuation chamber and sucks contaminated liquid out of it by means of the connection between the insert body and the holding section.

[0026] According to a second alternative of this preferred embodiment, the insert body also has an evacuation interface when it is mounted on the base of the suction head. In this case, the insert body and the holding section are also used to guide contaminated liquid out of the evacuation chamber when a discharge power is connected to the evacuation interface.

[0027] In the alternatives of this preferred embodiment, the holding section is mounted on the base of the suction head, and the evacuation chamber is then connected to the receiving region of the holding section. According to the first alternative, the inner space of the insert body is then connected to the evacuation interface arranged thereon, and it is thus possible to apply a negative pressure to the evacuation chamber by means of the connection between the insert body and the holding section. According to the second alternative, the holding section also has an evacuation interface connected to the receiving region. In this configuration, a negative pressure is also applied to the evacuation chamber by means of the connection between the insert body and the holding section.

[0028] It is thus not necessary in all alternatives of this preferred embodiment to provide an additional connection between the base and the holding section of the suction head, by means of which a negative pressure can be applied to the evacuation chamber.

[0029] It can be proposed in particular that the insert body is mounted on the base, and the inner space of the insert body is connected to the evacuation chamber of the suction head, wherein the insert body also has an evacuation interface which is also connected to the inner space.

[0030] It is advantageous in the above-described embodiments that the evacuation interface is arranged on a first end face of the insert body which extends perpendicular to the first longitudinal axis. The user can then easily access the evacuation interface.

[0031] In another preferred embodiment, the suction comb assembly has a suction hose with a connecting sleeve, wherein the suction hose is designed to be connected to the dirty liquid container of the floor cleaning machine indirectly or directly, wherein the connecting sleeve and the suction interface are designed such that the connecting sleeve can be pushed into the suction interface and can be pivoted relative to the suction interface about a first longitudinal axis in the pushed-in state, wherein the insertion body has a first slit at the suction interface extending through a wall of the insertion body, which first slit has a first locking section extending in a radial plane relative to the first longitudinal axis, wherein the first slit has a first opening toward a first end face, wherein the holding section has a second slit, which second slit opens toward a second end face on the holding section, wherein the second end face is directed in the same direction as the first end face, and the second slit has a second locking section extending in a radial plane relative to the second longitudinal axis, wherein the first locking section and the second locking section overlap when the insertion body is in the pushed-in configuration, wherein the connecting sleeve has a locking element extending away from it in a radial direction, wherein the slits are designed such that, when the connecting sleeve is pushed into the suction interface, the locking element can be brought into the first locking section and the second locking section by displacement and pivoting of the connecting sleeve relative to the suction interface.

[0032] In this preferred embodiment, the suction interface is provided on an end face of the insertion body, which end face extends perpendicular to the first longitudinal axis, wherein the suction interface and the connecting sleeve of the suction interface hose are designed such that the connecting sleeve can be pushed into the suction interface and can be pivoted there about the first longitudinal axis. Furthermore, a locking element is provided on the connecting sleeve, which locking element extends away from the connecting sleeve in a radial direction.

[0033] Furthermore, the insertion body and the holding section each have a slit or groove, which slits or grooves extend away from an end of the insertion body or the holding section, which end is directed in the same direction as the first end face, and each comprise a locking section extending in a radial plane relative to the first longitudinal axis. The slits or grooves are also mounted in the insertion body and the holding section such that, when the insertion body is in the pushed-in configuration in the holding section, the slits or grooves overlap, so that, when the connecting sleeve is pushed into the suction interface, the locking element can be moved along the grooves or slits in the insertion body and the holding section until the locking element reaches the locking sections. The locking element is hereby arranged both in the locking section of the insertion body and in the locking section of the holding section. In this configuration, axial relative movement between the insertion body and the holding section is prevented, so that, when the connecting sleeve is inserted into the suction interface in the described manner, the insertion body and the holding section are axially locked relative to one another and cannot be released.

[0034] According to another aspect of the invention, the above objective is achieved by a floor cleaning machine having: a wheeled walking mechanism designed to move on a surface to be cleaned; and a machine housing having a scrubbing platform having cleaning elements for engaging with the surface to be cleaned, and wherein the floor cleaning machine has a suction nozzle assembly according to one of the above embodiments.

[0035] Preferably, the machine end of the suction head assembly is pivotally held on the scrubbing platform about a vertical axis, which extends perpendicular to the contact plane, particularly when the floor cleaner is positioned on the surface to be cleaned. Attached Figure Description

[0036] The invention is described below with the aid of accompanying drawings, which show only preferred embodiments, wherein...

[0037] Figure 1 An embodiment of a floor cleaning machine according to the present invention is shown, the floor cleaning machine having an embodiment of a suction nozzle assembly according to the present invention.

[0038] Figure 2 A perspective view of an embodiment of the suction nozzle assembly according to the present invention, together with a scrubbing platform, is shown.

[0039] Figure 3 It shows Figure 2 A perspective view of a portion of an embodiment of the suction nozzle assembly according to the present invention.

[0040] Figure 4 It shows Figure 2 A perspective view of the suction nozzle connector of an embodiment.

[0041] Figure 5 It shows Figure 2 A perspective view of the suction head holder of an embodiment.

[0042] Figure 6 It shows that according to Figure 2 A perspective view of a portion of the suction nozzle assembly of an embodiment, wherein the suction nozzle holder is not shown.

[0043] Figure 7 It was also shown in a 3D diagram Figure 2 The connecting sleeve of the extraction interface in the embodiment, and

[0044] Figure 8 Shown from below Figure 2 A perspective view of a portion of the suction nozzle in an embodiment. Detailed Implementation

[0045] Figure 1 An embodiment of a floor cleaning machine 1 according to the present invention is shown, wherein the floor cleaning machine has a machine housing 3, in which a waste liquid container and a cleaning liquid container (neither shown) are disposed. In addition, the floor cleaning machine 1 has a walking mechanism 7 including two wheels 5 in this embodiment, which allows the user to move the floor cleaning machine 1 on the surface 11 to be cleaned by means of an operating lever 9 provided on the machine housing 3.

[0046] In addition, from Figure 1 As can be seen, the embodiment of the floor cleaning machine according to the present invention has a scrubbing platform 13 fixed on the machine housing 3, wherein, when viewed along the normal movement direction 15 indicated by the arrow during the operation of the floor cleaning machine 1, a suction nozzle assembly 17 according to the embodiment of the present invention is provided behind the scrubbing platform 13.

[0047] exist Figure 2 The perspective view shows an assembly consisting of a scrubbing platform 13 and a suction nozzle assembly 17. The scrubbing platform 13 has brush elements (not shown) driven by a motor 19, which engage with the floor surface 11 to be cleaned when the scrubbing platform 13 is placed on the floor surface 11. The suction nozzle assembly 17 (described in detail below) according to an embodiment of the invention is mounted on the housing 21 of the scrubbing platform 13.

[0048] According to an embodiment of the present invention, the suction nozzle assembly 17 firstly has a suction nozzle connector 23, which also includes... Figure 4 The suction head connector 23 is shown in the diagram and extends between the connecting end 25 and the machine end 27. In the embodiment described herein, the suction head connector 23 has a receiving opening 29 at the machine end 27, which is designed to be pivotally secured about a vertical axis 31 to a receiving part (not shown) of the housing 21 of the scrubbing platform 13, wherein the vertical axis 31 extends substantially perpendicular to the surface 11 to be cleaned when the floor cleaning machine 1 is in operation and the scrubbing platform 13 is placed on the surface 11 to be cleaned.

[0049] As in Figure 2 and Figure 5 As shown, the suction nozzle assembly 17 also has a suction nozzle retainer 33, which is located in... Figure 5 The image shows in detail and includes a connecting section 35 that is pivotally and detachably connected to the connecting end 25 of the suction head connector 23 in a manner described below.

[0050] Finally, the suction nozzle assembly 17 has a suction nozzle 37, which is removably mounted on the suction nozzle retainer 33 in a manner that will be described in detail below, wherein the suction nozzle 37 is as follows: Figure 2and Figure 3 The suction head 37 is shown with a base 39 which extends curvedly between a first end 41 and a second end 43. On the base 39 a front suction lip 45 as well as a rear suction lip 47 are mounted, both suction lips extending generally parallel to each other away from the base 39 and further along the base 39, respectively. When the suction head assembly 17 and thus the suction head 39 is placed on the ground surface 11 to be cleaned, the suction lips 45, 47 point from the base 39 towards the ground surface 11 to be cleaned and the two suction lips place with their lower edges 49, 51 on the ground surface 11 to be cleaned, as the lower edges 49, 51 are arranged in a common contact plane. It can further be seen that the front suction lip 45 is formed with a slit, i.e. the front suction lip has a slit 53 extending from the lower edge 49 towards the base 39, through which slit a dirt liquid present on the ground surface 11 to be cleaned can reach a suction chamber formed between the sealing lips 45, 47 and the base 39. Thus, the sealing lips 45, 47 and the base 39 delimit the suction chamber.

[0051] Subsequently, with particular reference to Figure 4 and Figure 5 the connection between the coupling end 25 of the suction head connection 23 and the coupling section 35 of the suction head holder 33 is described.

[0052] As can be seen in particular in Figure 4 the coupling end 25 of the suction head connection 23 has two pin sections 57 which extend along a common pin axis 59 which extends parallel to the contact plane in which the lower edges 49, 51 of the sealing lips 45, 47 extend. Further, the pin axis 59 is arranged in this embodiment parallel to a connection line 61 which extends in the contact plane between the ends 41, 43 of the base 39 of the suction head 37. It can further be seen from Figure 4 that the pin sections 57 have ribs which are designed circularly when viewed in cross-section. Thereby, the envelope of the pin sections 57 likewise has a circular cross-section.

[0053] On the coupling section 35 of the suction head holder 33 there are provided a first clamping element 63 and a second clamping element 65 opposite the first clamping element 63, wherein the pair of clamping elements 63, 65 are arranged parallel to each other. The clamping elements 63, 65 are designed such that they each extend concavely as viewed from the opposite clamping element, such that between the clamping elements 63, 65 a receiving section 67 is formed, and on these clamping elements a free end 69 is connected. Due to the concave course of the clamping elements 63, 65, the spacing between the clamping elements in the region of the free end 69 is smaller than in the region of the receiving section 67. Due to this design of the clamping elements 63, 65 and the appropriate selection of the diameter of the pin section 57 it is possible that the pin section 57 can be pushed into the receiving section 67 from the free end 69 of the clamping element 63, wherein the clamping elements 63, 65 can easily be elastically deformed here. When a sufficiently large force perpendicular to the pin axis 59 is applied to the suction head holder 33 or to the suction head 37 connected thereto, the pin section 57 can likewise be pressed out of the receiving section 67. Due to this locking connection between the suction head holder 33 and the suction head connection 23, an overload protection is thus achieved in a simple manner, so that the suction head 37 can finally be released from the machine housing 3 of the floor cleaning machine 1 when it comes into contact with an obstacle, so that the suction head 37 can be deflected and damage to the suction head 37 is avoided.

[0054] Since the cross section of the pin section 57 is also designed to be circular, the coupling section 35 and thus the suction head holder 33 can be pivoted about the pin axis 59 relative to the suction head connection 23.

[0055] The structure of the connection between the suction head holder 33 and the base 39 of the suction head 37 will now be described in the following.

[0056] As can be seen in Figure 3 On the base 39 of the suction head 37 there is mounted an insert body 71 which extends along a first longitudinal axis 73, wherein the first longitudinal axis 73 extends parallel to the contact plane defined by the lower edges 49, 51 of the sealing lips 45, 47. As viewed perpendicular to the first longitudinal axis 73, the envelope of the insert body 71 has a circular cross section, since the insert body 71 has ribs 75 which extend parallel to the longitudinal axis, these ribs extending up to the envelope. The insert body 71 is designed as a hollow body and thus has an inner space 77, wherein this inner space 77 is connected to the suction and discharge chamber, which is delimited by the base 39 and the sealing lips 45, 47, by means of a connection 79. Furthermore, the insert body 71 has on a first end face 81 a suction and discharge interface 83 which is designed such that a connection sleeve 87 provided on a suction and discharge hose 85 can be pushed into the suction and discharge interface and can be pivoted about the first longitudinal axis 73. As can be seen in Figure 7It can further be seen that the connecting sleeve 87 of the extraction hose 85 has two locking elements 89 which extend radially away from the connecting sleeve 87, the function of which will be described below.

[0057] In Figure 3 and Figure 6 It can be seen that the insertion body 71 has first slits 91 in the region of the extraction interface 83, which open towards the end face 81 of the insertion body 71 and which have first locking sections 93 which extend in radial planes which extend perpendicular to the first longitudinal axis 73. When the connecting sleeve 87 is pushed into the extraction interface 83, this can be done in such a way that the locking elements 89 are pushed into the first slits 91 and the connecting sleeve 87 is pivoted after the pushing-in movement along the first longitudinal axis 73, so that the locking elements 89 are moved into the first locking sections 93. Here, the locking elements 89 have such a length in the radial direction that the locking elements extend outwards beyond the outer side of the insertion body 71 through the first slits 91.

[0058] It can further be seen from Figure 5 that the extraction head holder 33 has a holding section 95 in which a receiving region 99 is formed which extends along a second longitudinal axis 97, the cross section of which perpendicular to the second longitudinal axis 97 is designed in the shape of a partial circle, wherein the wall which surrounds the receiving region 99 extends more than 180° in cross section. The diameter of the receiving region 99 is here chosen such that the insertion body 71 can be received therein, so that the insertion body can be pivoted about the first longitudinal axis 73 or the second longitudinal axis 97 relative to the holding section 95 or the extraction head holder 33.

[0059] Finally, it can be seen from Figure 5 and Figure 8 that the holding section 95 has second slits 103 from a second end face 101 which point in the same direction as the first end face 81, which likewise have second locking sections 105 which extend in radial planes which extend perpendicular to the second longitudinal axis 97.

[0060] As Figure 2 and Figure 8 is shown, when the insertion body 71 is completely pushed into the receiving region 99 along the first longitudinal axis 73 or the second longitudinal axis 97 so that the insertion body 73 is in the pushed-in configuration, the first slits and the second slits 91, 103 overlap and in particular the first locking sections and the second locking sections 93, 105 overlap.

[0061] This arrangement of the first and second slits 91, 103 can enable the coupling of the insertion body 71 to the holding section 95. When the insertion body 71 is pushed into the receiving area 99 along the second longitudinal axis 97 until it is fully pushed against a stop, the extraction hose 85 is inserted into the extraction interface 83 with the connecting sleeve 87 until a stop, wherein the connecting sleeve 87 is pivoted here such that the locking element 89 is moved into the first and second locking sections 93, 105. Thereby, the connection of the extraction hose 85 to the extraction interface 83 in the insertion body 71 at the same time locks the connection between the insertion body 71 and the holding section 95, so that the insertion body 71 can no longer be moved out of the holding section 95 along the second longitudinal axis 97. Furthermore, the connection between the base 39 of the suction scraper 37 and the suction scraper holder 33 also serves to establish a fluid connection between the extraction hose 85 and the extraction chamber in the suction scraper 37.

[0062] In the embodiments described here, the insertion body 71 is mounted on the base 39 of the suction scraper 37, while the holding section 95 is provided on the suction scraper holder 33. However, it is also conceivable that the suction scraper holder 33 has an insertion body which is then received in a receiving area on the base 39 of the suction scraper 37. In such an alternative, the receiving area of the holding section is connected to the extraction chamber, and an extraction interface for the extraction hose 85 can be provided on the holding section or the insertion body.

[0063] Furthermore, it should be pointed out again that the idea of pushing the insertion body 71 into the receiving area 99 of the holding section 95 for holding the suction scraper is independent and inventive and is not limited to use with other aspects of the embodiments of the suction scraper assembly described here. Rather, this idea can also be used in other configurations of the suction scraper assembly for releasably and pivotably mounting the suction scraper 37 on a holding device.

[0064] Furthermore, the connection between the base 39 and the suction scraper holder 33 is designed such that the base 39 can be pivoted relative to the suction scraper holder 33 about the second longitudinal axis 97, which extends parallel to the pin axis 59 and thus also parallel to the contact plane.

[0065] In Figure 8It can further be seen that a stop 107 is provided on the insertion body 71 with which the holding section 95 can come into contact, thereby delimiting a pivoting range within which the suction head 37 can be pivoted relative to the suction head holder 33 about the second longitudinal axis 97. Here, the stop 107 is formed on the connecting piece 79 and what is achieved by the stop 107 is that when the front end of the floor cleaning machine 1 is raised, the suction head 37, whose center of gravity, viewed in the direction of movement 15, is located in front of the pivoting axis defined by the first and second longitudinal axes 73, 97, is prevented from pivoting towards the surface 11 to be cleaned to such an extent that the suction head comes into contact with the surface even when the floor cleaning machine 1 is in the raised state.

[0066] In the suction head assembly 17 according to the above-described embodiment, the suction head 37 can be mounted on the floor cleaning machine 1 in such a way that it can be released from the floor cleaning machine 1 in a simple manner for maintenance and cleaning purposes.

[0067] In order to assemble the suction head 37, it is necessary to push the insertion body 71 provided thereon into the receiving region 99 of the suction head holder 33 along the second longitudinal axis 97 in the manner described, wherein it is easy to achieve this by pivoting the suction head connecting piece 23 about the vertical axis 31 such that the holding section 95 of the suction head holder 33 is arranged in the side region of the machine housing 3 of the floor cleaning machine 1. When the insertion body 71 is arranged in the receiving region 99 of the suction head holder 33 in the pushed-in configuration, the connection sleeve 87 of the extraction hose 85 is inserted into the extraction interface 83 in the insertion body 71 in the manner described, wherein the insertion body 71 is also axially locked relative to the suction head holder 33 as a result of the locking element 89 engaging the locking sections 93, 105 in the slits 91, 103. Here, the slits 91, 103 are designed such that the locking element 89 is oriented substantially horizontally in the locked state. Thus, in the event of a pulling force possibly acting in the extraction hose 85, it is reliably avoided that the connection sleeve 87 is pulled out of the extraction interface 83.

[0068] In the embodiment described here, the extraction hose 85 is guided annularly around the motor 19 of the scrubbing platform 13 and the other end of the extraction hose leads to the dirty liquid container of the floor cleaning machine 1.

[0069] During operation of the floor cleaning machine 1 on the surface 11 to be cleaned, if the suction head 37 comes into contact with an obstacle such that a force is exerted on the suction head in the direction of movement 15, the clamping elements 63, 65 can be released from the pin section 57 and the suction head 37 is not at risk of being damaged. In particular, an overload protection is thus constituted by the locking engagement of the clamping elements 63, 65 with the pin section 57.

[0070] Since the suction tine 37 is itself pivotably held about the first or second longitudinal axis 73, 97 relative to the suction tine holder 33 and the suction tine holder 33, on the other hand, is pivotably held on the suction tine connection 23 about the pin axis 59, the suction tine 37 can assume different vertical positions relative to the housing 21 of the scrubbing platform 13 depending on the wear of the cleaning elements in the scrubbing platform 13, wherein in each of these positions the contact plane can be oriented parallel to the ground surface 11 to be cleaned.

[0071] List of Figures:

[0072] 1 floor cleaning machine

[0073] 3 machine housing

[0074] 5 wheel

[0075] 7 running gear

[0076] 9 operating handle

[0077] 11 ground surface to be cleaned

[0078] 13 scrubbing platform

[0079] 15 direction of movement

[0080] 17 suction tine assembly

[0081] 19 motor (scrubbing platform)

[0082] 21 housing (scrubbing platform)

[0083] 23 suction tine connection

[0084] 25 coupling end

[0085] 27 machine end

[0086] 29 receiving opening

[0087] 31 vertical axis

[0088] 33 suction tine holder

[0089] 35 coupling section

[0090] 37 suction tine

[0091] 39 base

[0092] 41 first end of suction tine

[0093] 43 second end of suction tine

[0094] 45 front sealing lip

[0095] 47 rear sealing lip

[0096] 49 lower edge of the front sealing lip

[0097] 51 lower edge of the rear sealing lip

[0098] 53 slot

[0099] 57 pin section

[0100] 59 pin axis

[0101] 61 connecting line

[0102] 63 first clamping element

[0103] 65 second clamping element

[0104] 67 receiving section

[0105] 69 free end of the clamping element

[0106] 71 insertion body

[0107] 73 first longitudinal axis

[0108] 75 rib

[0109] 77 inner space

[0110] 79 connecting piece

[0111] 81 first end face

[0112] 83 evacuation connection

[0113] 85 evacuation hose

[0114] 87 connecting sleeve

[0115] 89 locking element

[0116] 91 first slot

[0117] 93 second locking section

[0118] 95 holding section

[0119] 97 second longitudinal axis

[0120] 99 receiving area

[0121] 101 second end face

[0122] 103 second slot

[0123] 105 second locking section

[0124] 107 stop

Claims

1. A suction shoe assembly for mounting on a floor cleaning machine (1), the suction shoe assembly having a suction shoe (37) with a base (39) on which a front suction lip (45) and a rear suction lip (47) are mounted, which suction lips extend away from the base (39) parallel to one another and are spaced apart from one another such that the suction lips (45, 47) and the base (39) delimit a suction chamber, wherein the edges (49, 51) of the suction lips (45, 47) away from the base (39) extend in a contact plane and are designed to rest on a ground surface (11) to be cleaned; a suction shoe holder (33) connected with the base (39), the suction shoe holder having a coupling section (35); a suction shoe connection (23) extending between a coupling end (25) and a machine end (27), wherein the machine end (27) is designed to be pivotably mounted on the floor cleaning machine (1) about a vertical axis (31), characterized in that one of the coupling section (35) and the coupling end (25) has a pin section (57) extending along a pin axis (59) which extends parallel to the contact plane, wherein the other of the coupling section (35) and the coupling end (25) has a first and a second clamping element (63, 65) which oppose one another, have free ends (69) and extend concavely such that a receiving section (67) is formed between the clamping elements (63, 65) in which the pin section (57) is received, wherein the spacing between the free ends (69) of the clamping elements (63, 65) from one another is smaller than the spacing of the clamping elements (63, 65) in the receiving section (67), and wherein one or both clamping elements (63, 65) are elastically deformable such that the pin section (57) can pass into and out of the receiving section (67) perpendicular to its extension direction beyond the free ends (69).

2. The suction sweeper assembly of claim 1, wherein, The pin section (57) and the receiving section (67) are designed such that the pin section (57) can pivot about the pin axis (59) relative to the clamping elements (63, 65).

3. The suction sweeper head assembly of claim 1 or 2, wherein, The pin section (57) is provided on the coupling end (25) and the first and second clamping elements (63, 65) are provided on the coupling section (35).

4. The suction sweeper assembly of claim 1 or 2, wherein, The base (39) extends from a first end to a second end (41, 43), and wherein the pin axis (59) extends parallel to a connection line (61) between the ends (41, 43) of the base (39), which connection line extends parallel to the contact plane.

5. The suction sweeper assembly of claim 1 or 2, wherein, An insert body (71) is mounted on one of the base (39) and the suction shoe holder (33), which extends along a first longitudinal axis (73), and wherein a holding section (95) is provided on the other of the base (39) and the suction shoe holder (33) in which a receiving area (99) is formed, wherein the pin section (57) is received in the receiving area (99) and the free ends (69) of the clamping elements (63, 65) extend into the receiving area (99). wherein the insert (71) is received in the receiving region (99) and is in a pushed-in configuration, wherein the receiving region (99) is designed such that it extends along a second longitudinal axis (97), wherein the second longitudinal axis (97) extends parallel to the contact plane, and wherein the insert (71) and the receiving region (99) are designed such that the insert (71) can be pushed into the receiving region (99) along the second longitudinal axis (97) until it is in the pushed-in configuration to be received into the receiving region (99), wherein the first and the second longitudinal axes (73, 97) coincide, and in the pushed-in configuration the insert (71) can be pivoted about the second longitudinal axis (97) relative to the holding section (95).

6. The suction sweeper assembly of claim 5, wherein, The second longitudinal axis (97) and the pin axis (59) are spaced apart from and parallel to each other.

7. The suction sweeper assembly of claim 6, wherein, The insert (71) has an inner space (77), wherein one of the inner space (77) and the receiving region (99) is connected with the evacuation chamber, and wherein the other one of the inner space (77) and the receiving region (99) is connected with an evacuation interface (83) for an evacuation hose (85), which is provided on the insert (71) or the holding section (95), and in the pushed-in configuration the receiving region (99) is connected with the inner space (77), or one of the inner space (77) and the receiving region (99) is connected with an evacuation interface (83) for an evacuation hose (85), which is provided on the insert (71) or the holding section (95), and in the pushed-in configuration the receiving region (99) is connected with the inner space (77).

8. The suction sweeper assembly of claim 7, wherein, The insert (71) is provided on the base (39) and the inner space (77) is connected with the evacuation chamber, and wherein the insert (71) has an evacuation interface (83) which is connected with the inner space (77).

9. The suction sweeper assembly of claim 8, wherein, The evacuation interface (83) is arranged on a first end face (81) of the insert (71) which extends perpendicular to the first longitudinal axis (73).

10. The suction head assembly according to claim 9, having an evacuation hose (85) with a connection sleeve (87), wherein the evacuation hose (85) being designed to be connected with a dirt liquid container of a floor cleaning machine (1) indirectly or directly, wherein the connection sleeve (87) and the evacuation interface (83) are designed such that the connection sleeve (87) can be pushed into the evacuation interface (83) and in the pushed-in state can be pivoted relative to the evacuation interface (83) about the first longitudinal axis (73), wherein the insert (71) has at the evacuation interface (83) a first slit (91) extending through a wall of the insert (71), which has a first locking section (93) extending in a radial plane relative to the first longitudinal axis (73), wherein the first slit (91) has a first opening towards the first end face (81), wherein the holding section (95) has a second slit (103) which opens towards a second end face (101) on the holding section (95), wherein the second end face (101) points in the same direction as the first end face (81) and the second slit has a second locking section (105) which extends in a radial plane relative to the second longitudinal axis (97), wherein the first and second locking sections (93, 105) overlap when the insertion body (71) is in the pushed-in configuration, wherein the connection sleeve (87) has a locking element (89) which extends away therefrom in a radial direction, and wherein the slits (91, 103) are designed such that, upon pushing the connection sleeve (87) into the suction interface (83), the locking element (89) can enter the first and second locking sections (93, 105) by a displacement and a pivoting of the connection sleeve (87) relative to the suction interface (83).

11. A floor cleaning machine having a running gear (7) with wheels (5) such that the running gear (7) is designed to move on a ground surface (11) to be cleaned, and a machine housing (3), wherein a scrubbing platform (13) is arranged on the machine housing (3), which scrubbing platform is provided with cleaning elements for engaging with the ground surface (11) to be cleaned, and wherein the floor cleaning machine has a suction scraper head assembly (17) according to one of claims 1 to 10.

12. The floor cleaning machine of claim 11, wherein, The machine end (27) is pivotably held on the machine housing (3) or the scrubbing platform (13) about a vertical axis (31), wherein the vertical axis (31) extends perpendicular to the contact plane when the floor cleaning machine (1) is arranged on a ground surface (11) to be cleaned.

Images