EP2229856A2 - Appareil d'aspiration doté d'au moins un capteur - Google Patents

Appareil d'aspiration doté d'au moins un capteur Download PDF

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Publication number
EP2229856A2
EP2229856A2 EP10002722A EP10002722A EP2229856A2 EP 2229856 A2 EP2229856 A2 EP 2229856A2 EP 10002722 A EP10002722 A EP 10002722A EP 10002722 A EP10002722 A EP 10002722A EP 2229856 A2 EP2229856 A2 EP 2229856A2
Authority
EP
European Patent Office
Prior art keywords
collecting
housing part
contact
connection
suction
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP10002722A
Other languages
German (de)
English (en)
Other versions
EP2229856B1 (fr
EP2229856A3 (fr
Inventor
Markus Barabeisch
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Festool GmbH
Original Assignee
Festool GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Festool GmbH filed Critical Festool GmbH
Publication of EP2229856A2 publication Critical patent/EP2229856A2/fr
Publication of EP2229856A3 publication Critical patent/EP2229856A3/fr
Application granted granted Critical
Publication of EP2229856B1 publication Critical patent/EP2229856B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L5/00—Structural features of suction cleaners
    • A47L5/12—Structural features of suction cleaners with power-driven air-pumps or air-compressors, e.g. driven by motor vehicle engine vacuum
    • A47L5/22—Structural features of suction cleaners with power-driven air-pumps or air-compressors, e.g. driven by motor vehicle engine vacuum with rotary fans
    • A47L5/36—Suction cleaners with hose between nozzle and casing; Suction cleaners for fixing on staircases; Suction cleaners for carrying on the back
    • A47L5/365—Suction cleaners with hose between nozzle and casing; Suction cleaners for fixing on staircases; Suction cleaners for carrying on the back of the vertical type, e.g. tank or bucket type
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L7/00—Suction cleaners adapted for additional purposes; Tables with suction openings for cleaning purposes; Containers for cleaning articles by suction; Suction cleaners adapted to cleaning of brushes; Suction cleaners adapted to taking-up liquids
    • A47L7/0004—Suction cleaners adapted to take up liquids, e.g. wet or dry vacuum cleaners
    • A47L7/0023—Recovery tanks
    • A47L7/0028—Security means, e.g. float valves or level switches for preventing overflow
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L9/00—Details or accessories of suction cleaners, e.g. mechanical means for controlling the suction or for effecting pulsating action; Storing devices specially adapted to suction cleaners or parts thereof; Carrying-vehicles specially adapted for suction cleaners
    • A47L9/10—Filters; Dust separators; Dust removal; Automatic exchange of filters
    • A47L9/19—Means for monitoring filtering operation
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L9/00—Details or accessories of suction cleaners, e.g. mechanical means for controlling the suction or for effecting pulsating action; Storing devices specially adapted to suction cleaners or parts thereof; Carrying-vehicles specially adapted for suction cleaners
    • A47L9/28—Installation of the electric equipment, e.g. adaptation or attachment to the suction cleaner; Controlling suction cleaners by electric means
    • A47L9/2805—Parameters or conditions being sensed
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L9/00—Details or accessories of suction cleaners, e.g. mechanical means for controlling the suction or for effecting pulsating action; Storing devices specially adapted to suction cleaners or parts thereof; Carrying-vehicles specially adapted for suction cleaners
    • A47L9/28—Installation of the electric equipment, e.g. adaptation or attachment to the suction cleaner; Controlling suction cleaners by electric means
    • A47L9/2836—Installation of the electric equipment, e.g. adaptation or attachment to the suction cleaner; Controlling suction cleaners by electric means characterised by the parts which are controlled
    • A47L9/2842—Suction motors or blowers
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L9/00—Details or accessories of suction cleaners, e.g. mechanical means for controlling the suction or for effecting pulsating action; Storing devices specially adapted to suction cleaners or parts thereof; Carrying-vehicles specially adapted for suction cleaners
    • A47L9/28—Installation of the electric equipment, e.g. adaptation or attachment to the suction cleaner; Controlling suction cleaners by electric means
    • A47L9/2857—User input or output elements for control, e.g. buttons, switches or displays
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L9/00—Details or accessories of suction cleaners, e.g. mechanical means for controlling the suction or for effecting pulsating action; Storing devices specially adapted to suction cleaners or parts thereof; Carrying-vehicles specially adapted for suction cleaners
    • A47L9/28—Installation of the electric equipment, e.g. adaptation or attachment to the suction cleaner; Controlling suction cleaners by electric means
    • A47L9/2889—Safety or protection devices or systems, e.g. for prevention of motor over-heating or for protection of the user

Definitions

  • the invention relates to a suction device with a nipple housing and a suction motor arranged in a motor housing part of the nipple housing for generating a suction flow, arranged in a collecting housing part of the nipple housing, limited by a plenum boundary wall collecting space for collecting separated from the suction flow particles and / or segregated Moisture, with at least one arranged in the collecting chamber sensing member having sensor for detecting a state, in particular a level in the collecting space, and a control device for controlling, in particular for switching off, the suction motor in response to a sensor signal of the at least one sensor, wherein the Motor housing part is movable relative to the collecting housing part for access to the collecting space.
  • suction devices are well known, for example DE 101 30 995 A1 .
  • a liquid such as water and the like
  • the suction motor must be switched off to avoid damage, possibly even an electric shock.
  • the at least one sensor has a collecting space boundary wall penetrating connection line from the collecting part arranged in the collecting part to an outside of the collecting space boundary wall, and that a signal connection for the sensor signal of the connection line is present in the collecting housing part to the control device arranged in the motor housing part.
  • a basic idea of the invention is to arrange the sensor contacts directly in the collecting housing part and from there to lead a connecting line to the outside, which in turn is in connection with the motor housing part.
  • a connecting line to the outside, which in turn is in connection with the motor housing part.
  • the corresponding signal connection which preferably comprises flexible lines and / or Bermmorial prestigee, is the respective detection part connected to the sensor.
  • the sensor is, for example, a fill level sensor, a pressure sensor, a temperature sensor or the like.
  • the sensor is conveniently housed in the motor housing part, but with its sensing part via the signal connection in electrical connection.
  • the at least one sensor is in communication with or forms part of the controller.
  • the control device may be formed by a shutdown contact or a shutdown input of the suction motor.
  • the control device can form a component of the suction motor or a motor module which contains the suction motor.
  • the at least one sensor sends a pure shutdown signal for switching off the suction motor, which is acted upon directly on the suction motor.
  • a preferred embodiment comprises a more sophisticated, preferably several monitoring and / or control functions providing control device, such as a microprocessor control or the like. This is optional and not necessary.
  • the motor housing part is removable, for example, from the collecting housing part. It is understood that the motor housing part can also be movably mounted on the collecting housing part, for example, can be displaced and / or wegschwenkbar.
  • the signal connection expediently has at least one contact connection detachable from the collecting housing part when the motor housing part is removed.
  • the contact connection comprises a collecting housing contact surface, which is arranged on the collecting housing part, and an am Motor housing part arranged motor housing contact surface.
  • the contact surfaces of the contact connection are expediently arranged on a side facing away from the plenum chamber side of the collecting space limiting housing wall. Thus, therefore, the connection line is led out of the plenum to the outside. There, the contact surfaces of the contact connection are then arranged to establish an electrical connection between the motor housing part and the collecting housing part.
  • the housing wall part next to which the contact surfaces are arranged, is advantageously an edge part of a collecting space bounding, optionally multi-part or consisting of several components housing wall.
  • the contact surfaces are thus arranged in the vicinity of an edge part.
  • the contact surfaces do not protrude in front of an upper side of the edge part (relative to the collecting housing part) or an underside of the edge part (relative to the motor housing part), which prevents damage to the contact surfaces.
  • the contact surfaces are arranged close to or next to the edge part of the housing wall. This can relate to one or both contact surfaces which can be brought into contact with one another.
  • the contact surfaces may protrude to an edge of the edge portion, whereby the edge portion still forms a mechanical protection of the contact surfaces, especially if they are resilient in a preferred embodiment.
  • the collecting container is for example a trough-like or trough-like lining of the collecting space, expediently made of plastic or another water-repellent or waterproof material.
  • a liquid, in particular moist dirt particles or the like are collected. Because there is a gap between the edge part of the housing wall and the contact surfaces, damage to the collecting container, in particular its edge region, is avoided. This keeps it waterproof.
  • the contact surfaces have, for example, a circumferential distance to the edge part.
  • the housing wall section expediently forms part of the collecting space boundary wall penetrated by the connecting line, in particular of an edge region thereof. It is understood that the housing wall portion, outside of which the contact surfaces are arranged, may also be another Gescousewandpartie, which is spaced from the plenum boundary wall through which the connection line passes.
  • the contact surfaces of the contact connection, at least one of the contact surfaces, is expediently covered by at least one cover part or a cover region when mounted on the collecting housing part motor housing part and expediently also electrically insulated.
  • at least one cover part or a cover region when mounted on the collecting housing part motor housing part and expediently also electrically insulated.
  • At least one of the contact surfaces is expediently designed as a spring tongue.
  • the other contact surface may be a fixed contact surface, for example the end of a bolt or the like.
  • the suction device expediently also has an electrical connection contact, for example a grounding contact, an antistatic contact or the like, which is arranged, for example, on the suction pipe connection or elsewhere on the collecting housing part.
  • an electrical connection contact for example a grounding contact, an antistatic contact or the like, which is arranged, for example, on the suction pipe connection or elsewhere on the collecting housing part.
  • this terminal contact via a flexible line with the motor housing part, in particular the control device in the motor housing part.
  • a further contact connection is provided between the grounding contact arranged in the collecting housing part and the motor housing part, advantageously via a contact contact connection with (contact) contact surfaces, which can be detached from the collecting housing part when the motor housing part is removed.
  • the contact surfaces of the releasable terminal contact connection are preferably arranged in the region of the collecting housing contact surface and the motor housing contact surface of the signal connection leading to the sensor. This has the advantage that all releasable contact are arranged in one place or in a narrowly limited area, so that, for example, protective measures for protecting the contact areas against environmental influences, for example the aforementioned cover part or the covering area, can protect all contact areas.
  • the detection part arranged in the collecting chamber is expediently an electrical contact surface of the at least one sensor.
  • a liquid level can be detected by electrical means.
  • the detection part is correspondingly sensitive to temperature, pressure or the like.
  • the at least one sensor comprises a first and a second detection part arranged in the collecting space and connected to a connecting line penetrating the collecting space boundary wall and connected to the control device.
  • an electrical connection can be produced by particles collected in the collecting space or moisture collected there.
  • the sensor generates a sensor signal for controlling the suction motor as a function of this electrical connection, which may have the values "present” / "non-present” and / or "resistance high” / "resistance low", for example.
  • the connecting line between the outside of the plenum boundary wall and the inside expediently comprises an electrically conductive bolt, in particular a screw, which penetrates the plenum boundary wall.
  • the bolt, in particular the screw is screwed from the outer circumference or the outer side into the plenum boundary wall.
  • a remote from the signal connection end of the bolt expediently forms the detection part of the at least one sensor or at least a portion of the detection part.
  • the connection line and the detection part of one and the same component, in particular a bolt may be formed.
  • a differently shaped electrically conductive component can penetrate the plenum boundary wall, wherein one arranged in the collecting chamber end of the connecting part forms the detection part of the at least one sensor, while the other, arranged on the outside end with the motor housing part, in particular the Control device, is in signal communication.
  • At least one of the contact surfaces is expediently formed by an end region of a conductor track, which is penetrated by the bolt penetrating the collecting chamber boundary wall. It would also be possible to pass a conductor track through the collecting chamber boundary wall, wherein expediently an end of the conductor track arranged in the collecting space forms the respective detecting part of the at least one sensor.
  • the conductor expediently extends into a region below a connection for a suction pipe.
  • the bolt which at least partially forms the connecting line and / or the detection part, has expediently also a mechanical holding function.
  • the bolt holds, for example, a connection component for connecting a particularly flexible suction pipe, that is to say a suction hose, to the collecting housing part, for example the collecting space boundary wall.
  • the connection component contains, for example, a connection sleeve for the intake manifold.
  • contact points of the connecting line and / or signal connection in the outer region of the sucker housing e.g. accessible for testing purposes.
  • the advantageous test contacts forming contact points not directly, e.g. are exposed on a housing wall or other component, but these are set back against and / or closed.
  • suitable testing means e.g. Measuring tips, the function of the at least one sensor can be tested at least one of the contact points.
  • a suction motor 12 for generating a suction flow 13 is arranged, which is sucked into the sucker housing 11 via a suction inlet 14.
  • a hose not shown, can be connected.
  • a filter arrangement 15 for separating particles from the suction flow 13.
  • a receptacle 17 for receiving the suction hose and / or a connection cable 18, with which the suction device 10 is connected to an electrical supply network.
  • a suction device with an accumulator would be possible.
  • the suction device 10 is a portable suction device, on the underside driving rollers 19, 20 are arranged.
  • the front casters 20 are castors. Furthermore, the suction device 10 can be grasped on a carrying handle 21 on the upper side 16.
  • a control wall 23 with controls 24 for operating the suction device 10.
  • the control wall 23 is suitably inclined, so that the controls 24 are easy to operate from diagonally above.
  • the controls 24 include a switch 25, which forms a main switch, so to speak. With the switch 25, the suction motor 12 can be switched on and off. Further, an automatic mode is adjustable, in which the suction motor 12 always runs when a connected load receives electrical power through the suction device 10, which will be explained later. With the help of a Saugados- or speed switch 26, a power of the suction motor 12 can be adjusted.
  • An adaptation switch 27 allows electrical adaptation of the suction device 10 to a respective suction inlet 14 connected suction hose. With a cleaning switch 28, a cleaning function of the suction device 10 can be switched on and / or parameterized.
  • An outlet 29 which is firmly installed on the suction device 10 makes it possible to plug in an electrical energy consumer.
  • the socket 29 is electrically connected to the connecting cable 18.
  • the nipple housing 11 is constructed in two parts and has a motor housing part 30 and a collecting housing part 31 forming, for example, a filter housing part.
  • the motor housing part 30 forms an upper housing part 32, which is placed on the lower housing part 33 forming a collecting housing part 31, see FIG. 1 ,
  • the upper housing part 32 is seated on the lower housing part 33 with its outer peripheral edge region 36.
  • the motor housing part 30 is connected to the collecting housing part 31 by manually, tool-free operable holding means 37.
  • the holding means 37 include, for example, tabs 38 which engage over the peripheral edge region 36 and engage in retaining recesses 39 on the housing lower part 33.
  • the tabs 38 are mounted on bearings 40 of the motor housing part 30 pivotally and / or longitudinally displaceable, so that they can be brought into engagement or out of engagement with the retaining recesses 39.
  • the bearings 40 and the associated retaining recesses 39 are arranged directly one above the other approximately in the region of a longitudinal center 41 of side walls 42, 43 of the motor housing part 30 and the collecting housing part 31.
  • an optional large-sized filter bag 48 of the filter assembly 15 can be arranged.
  • the suction device 10 is also operable without the filter bag 48.
  • the inner space 47 is advantageously open towards the motor housing part 30.
  • the interior 47 forms a collecting space 110 for directly collecting separated from the suction flow 13 particles and / or secreted moisture - with or without a filter bag or other from the one collecting space 110 removable collecting container.
  • the motor housing part 30 has, in addition to its two side walls 42, a bottom wall 49, which faces the interior 47 of the collecting housing part 31, a front wall 50, a rear wall 51 and a top wall 52, which also forms the bottom of the receptacle 17.
  • a bottom wall 49 which faces the interior 47 of the collecting housing part 31, a front wall 50, a rear wall 51 and a top wall 52, which also forms the bottom of the receptacle 17.
  • the walls 49 to 52 an interior space 53 in which, inter alia, an engine accommodation space 54 for the naturally aspirated engine 12 as well as an air conduction arrangement communicating with the engine accommodating space 54 or the naturally aspirated engine 12 are arranged. Apart from inflow openings or outflow openings of the air guide arrangement, the interior 53 is closed.
  • the bottom wall 49 essentially has two openings, namely a suction inlet for the suction flow 13 and a mounting opening 57, through which the suction motor 12 designed as a motor module 58 can be introduced into or removed from the motor receiving space 54.
  • the mounting opening 57 is dimensioned such that the motor module 58 can be inserted as a whole into the motor receiving space 54 or removed therefrom.
  • only one with screws 59 - quick fasteners, preferably those for a tool-free installation, such as clamping lever or the like or the like are also possible - on the motor housing part 30 fixed lid 60 to remove the 57 closes the mounted on the motor housing part 30 state.
  • the suction motor 12 is accessible for maintenance purposes, for example, for coal or brush change in case of wear. A simple change of the motor module 58 is possible as a whole.
  • the mounting opening 57 is thus arranged on the bottom wall 49 of the motor housing part 30, thus on one of the sucker housing walls 49a.
  • a suction inlet 12 leading to the suction inlet is preceded by a main filter 61.
  • the main filter 61 is configured as a filter insert 62, which is accommodated in a filter receptacle 63 of the bottom wall 49.
  • the collecting chamber 110 can also be filtered out directly to receive it from the suction flow 13 Particles or rejected moisture suitable.
  • the collecting space 110 is designed in the manner of a trough, which is accessible via the front suction inlet 14. If an operator wishes to avoid contamination of the collection space 110, but does not use a filter bag 48, he may line the collection space 110 with a collection container 111, which is also trough-like.
  • the collecting container 111 forms, as it were, a lining of the collecting chamber 110. Edge portions 112 of the collecting container 111 can overlap as overlapping portions over edge portions 113 of the side walls 43 and the rear wall 46 and an edge portion 114 of the front wall 45, which is shown in FIG FIG. 4 indicated in dashed lines.
  • the collection container 111 should not be damaged at any point, in particular not in the region of its edge portions 112, which in the worst case could lead to tearing and thus leakage of particles and / or liquid from the collection area of the collection container 111.
  • a sensor arrangement 116 of the suction device 10 the signal connections 117, 118 between detection parts 119, 120, which are arranged in the collecting space 110, and a sensor 121 which is arranged in the motor housing part 30 is designed so that it does not damage the collecting container 111.
  • the sensor 121 detects a level of a liquid or other electrically conductive substance in the Now, it would be possible, the suction motor 12 based on the sensor signal 122 directly on or off, for example, when a predetermined, the detection parts 119 and / or 120 reaching liquid level is reached in the plenum 110 and the Sensor signal 122 applied to a switching input of the suction motor 12.
  • a control device 97 is provided for the suction motor 12, which receives the sensor signal 122 from the sensor 121 and controls the suction motor 12.
  • the sensor 121 is preferably arranged on a circuit board 123 of the control device 97, whereby a construction of the sensor which is separate from the circuit board is also entirely possible.
  • the control device 97 can be influenced by the operating elements 24.
  • the board 123 is disposed below the controls 24, ie below the control wall 23, see FIG. 7 ,
  • the control device 97 is connected to the suction motor 12, in particular the motor module 58 via electrical lines, not shown.
  • the signal connections 117, 118 run outside the collecting space 110, but are electrically protected and concealed between the collecting housing part 31 and the motor housing part 30.
  • Connecting lines 124 penetrate the front wall 45, which forms a plenum boundary wall 125.
  • the connecting lines 124 are realized by bolts 126, which from an outer side 127 of the plenum boundary wall 125 forth therethrough into the plenum 110 with their projecting free ends 128.
  • the free ends 128 form the detection parts 119, 120 of the sensor 121.
  • the free ends 128 are electrically conductive.
  • the bolts 126 are also in electrical contact with tracks 129, for example, because they are screwed through the tracks 129, soldered to these or other similar contact produce.
  • a lower end of a respective printed conductor 129 in the drawing is penetrated by one of the bolts 126 and makes electrical contact with it, for example because the head of the bolt 126 rests on the free outer side of the printed conductor 129 making electrical contact.
  • An end of a respective printed conductor 129 remote from this end is configured as a collecting housing contact surface 130, to which a motor housing contact surface 131, which is arranged on the motor housing part 30, is assigned to a releasable contact connection 132.
  • the contact connection 132 is closed, i. In each case a pair of contact surfaces 130, 131 comes into contact with each other, so that the signal connections 117, 118 between the one hand the sensor 121 and on the other hand its detection parts 119, 120 are made.
  • the detection parts 119, 120 form a first and a second detection part of the sensor 121.
  • a level of a liquid or other electrically conductive substance reaches the height of the detection parts 119, 120 in the collection space 110, an electrical connection between the detection parts 119, 120 is established which leads to the sensor 121 via the signal connections 117, 188.
  • the sensor 121 can thus detect, for example, a liquid level in the collecting space 110.
  • the detection parts 119, 120 are below one Saugrohran gleiches 133 arranged. Consequently, therefore, a liquid level is detected as far as possible just below the suction pipe connection 133, which at the same time forms the suction inlet 14, by the detection parts 119, 120.
  • connection contact 134 which can be detachably connected to the motor housing part via a detachable connection contact connection 135.
  • the terminal contact connection 135 is arranged in the region of the sensor contact connection 132, so that locally concentrated electrical contacts can be produced or released between the motor housing part 30 on the one hand and the collecting housing part 31 on the other hand.
  • the connection contact 134 comprises an antistatic or earth contact 137 which is arranged in the region of a pipe sleeve 136 of the suction pipe connection 133 and which produces an electrical connection to a suction pipe, in particular a flexible suction hose, not shown in the drawing.
  • the suction pipe connection 133 in particular the pipe sleeve 136, expediently consists of an electrically conductive material, in particular plastic.
  • the suction tube / suction hose is electrically conductive, at least in its intended for contact with the Saugrohran gleich 133 and / or the grounding contact 137, for example, because it consists of electrically conductive plastic.
  • the grounding contact 137 is configured as a spring contact 139, for example a spring tongue.
  • the spring contact 139 is formed by an end region of a conductor track 138 whose other end region is designed as a contact surface 140.
  • the conductor track 138 is arranged between the conductor tracks 129 and expediently runs parallel to these.
  • the contact surface 140 is arranged between the two collecting housing contact surfaces 130.
  • the mechanical configuration of the contact surfaces 130, 140 is the same or identical.
  • the contact surfaces 130, 140 are each configured as spring contacts.
  • the contact surfaces 130, 140 are formed by outer sides of cross-sectionally U-shaped spring tongues 141.
  • the motor housing contact surfaces 131 and a terminal contact surface 142 are provided.
  • the contact surfaces 131, 142 are formed by free ends of bolts 143 which project in front of the underside 34 a of the motor housing part 30.
  • the bolts 143 are not in front of a lower edge 144 of the motor housing part 30, so that they are mechanically protected.
  • the edge 144 is formed by a peripheral edge or a cover 145 of the motor housing part 30, behind the one hand, the contact surfaces 130, 140 and on the other hand, the free, contact surfaces forming ends of the bolt 143 are arranged protected.
  • a space between the cover 145 and the plenum boundary wall 125 is sized so that the spring tongues 141 are free springy, but are protected by the cover 145 from environmental influences.
  • the bolts 143 are screwed through, for example, by the bottom wall 49, at the convenient 143 bolt dome for the bolts are present.
  • the bolt 143 which forms the contact surface 140, is connected to a ground potential.
  • the two other bolts 143 are electrically connected via electrical lines 146 to the sensor 121.
  • the conductor tracks 129, 138 are arranged on a conductor carrier 147 and project in front of the upper side thereof with the spring tongues 141.
  • the conductor carrier 147 has a central recess 148 for the tube sleeve 136, which extends through the conductor carrier 147 and the front wall 45 therethrough.
  • Carrier sections 149 for carrying the printed conductors 129 extend laterally next to the recess 148.
  • the printed conductors 129 are plugged into end receptacles 150 of the printed conductor carrier 147.
  • the receptacles 150 are located below the receptacle 150.
  • transverse holders 151 are provided so that the interconnects 129 are held on the support sections 149 at the top and bottom, respectively in their end regions.
  • the bolts 126 have a plurality of functions, namely, contact surfaces and connection lines for the sensor 121 to form and also a holding function with respect to housing components with respect to the sucker housing 11th
  • a filter bag holder 154 is pivotally mounted, which is for holding the filter bag 48 in its lower position, i. to the pipe sleeve 136 toward, is advantageously spring loaded.
  • the free ends 128 of the bolts 126 project into recesses 155. However, the free ends 128 of the bolts 126 are not in front of an inner front side 156 of the inner part 153, so that they are set back from the same, which prevents a FehlWallettechnik or Albertsenstechnik.
  • the grounding contact 137 providing conductor 138 is fastened with a bolt 157 on the sucker housing 11.
  • the bolt 157 penetrates a holding piece 158 supporting the grounding contact 137 and resting on the strip conductor support 147, as well as a support 159 with which the strip conductor support 147 is supported above the cutout 158 on the front wall 45.
  • the bolt 157 is screwed into the inner part 153 and also expediently does not project in front of the inner front side 156.
  • the bolts 126, 157 hold with the inner part 153 and the conductor carrier 147, which in turn hold the pipe sleeve 136, respectively connecting components for connecting a suction pipe to the collecting housing part 31st
  • connection assembly for the suction tube is also veneered, in particular, the conductor tracks 129, 138 are covered by a cover 160.
  • the cover member 160 has on its upper side protection projections 161, between which the spring tongues 141 are arranged and which protrude in front of the spring tongues 141, so that they are protected from damage.
  • the cover member 160 has a recess for the intake manifold, not shown.
  • the cover member 160 is infected, for example, to the nipple housing 11 and / or locked with this and / or glued in a manner not shown.
  • the edge portion 114 is a distance 162 into which the edge portion 112 of the collecting container 111 can be placed without the components of the contact connections 132, 135 during assembly of the motor housing part 30 and the collecting housing part 31 to be damaged.
  • openings 163 are provided, are accessible via the heads of the bolts 126.
  • pads 164 of the signal connections 117, 118 and the connection lines 124, respectively are externally accessible, e.g. for testing purposes.
  • the contact pads 164 are set back from a front side of the cover member 160, and the openings 163 are small.
  • the contact points 164 are advantageously only accessible to suitable test equipment, in particular test probes.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Sampling And Sample Adjustment (AREA)
  • Nozzles For Electric Vacuum Cleaners (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
EP10002722.6A 2009-03-21 2010-03-16 Appareil d'aspiration doté d'au moins un capteur Active EP2229856B1 (fr)

Applications Claiming Priority (1)

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US11172799B2 (en) 2018-12-28 2021-11-16 Techtronic Floor Care Technology Limited Portable extractor

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DE102013008628A1 (de) 2012-05-23 2013-11-28 Festool Group Gmbh & Co. Kg Sauggerät mit einem Sensor

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DE10130995A1 (de) 2001-06-27 2003-01-16 Festool Gmbh Sauggerät

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US4378611A (en) * 1982-06-22 1983-04-05 James Ninehouser Multifunction cleaning and drying device
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11172799B2 (en) 2018-12-28 2021-11-16 Techtronic Floor Care Technology Limited Portable extractor
US11844483B2 (en) 2018-12-28 2023-12-19 Techtronic Floor Care Technology Limited Portable extractor

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EP2229856A3 (fr) 2012-04-25
DE102009015643A1 (de) 2010-09-30

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