DE102009015643A1 - Suction device with at least one sensor - Google Patents

Abstract

The invention relates to a suction device (10) having a nipple housing (11) and a suction motor (12) arranged in a motor housing part (30) of the nipple housing (11) for generating a suction flow (13) with one in a collecting housing part (31) of the nipple housing (11) arranged, by a plenum boundary wall (125) limited collecting space (110) for collecting separated from the suction flow (13) particles and / or separate moisture, with at least one in the collecting space (110) arranged sensing part (119, 120) having a sensor (121) for detecting a state, in particular a filling level, in the collecting space (110), and a control device (97) for controlling, in particular switching off, the suction motor (12) in response to a sensor signal (122) at least one sensor (121), wherein the motor housing part (30) is movable relative to the collecting housing part (31) for access to the collecting space (110). In the suction device (10), it is provided that the at least one sensor (121) has a connecting line (124) penetrating the collecting space delimiting wall (125) from the detection part (119, 120) arranged in the collecting space (110) to an outer side (127 ) comprises the collection chamber boundary wall (125), and that a signal connection (117, 118) for the sensor signal (122) from the connecting line (124) in the collecting housing part (31) to the control device (97) arranged in the motor housing part (30) is.

Description

The The invention relates to a suction device with a suction cup and one in a motor housing part of the sucker housing arranged suction motor for generating a suction flow, with a in a collecting housing part of the sucker housing arranged, bounded by a plenum boundary wall collecting space for collecting particles separated from the suction flow and / or separate moisture, with at least one in the plenum arranged sensing part having sensor for detecting a Condition, in particular a level, in the plenum, and a control device for controlling, in particular for Shutdown, the suction motor in response to a sensor signal of the at least one sensor, wherein the motor housing part relative to the collection housing part for access to the Collecting space is movable.

Such suction devices are well known, for example DE 101 30 995 A1 , In the plenum, which is usually designed as a trough, for example, a liquid, for. As water and the like, can be collected, which can be absorbed by the suction device. However, if the liquid has reached a certain level in the collecting space, the suction motor must be switched off to avoid damage, possibly even an electric shock.

Now it is known, for example, probe-like in front of the motor housing part to provide in the collecting space projecting sensor contacts. These sensor contacts However, they are exposed and usually long, which is an increased Risk of breakage. If the motor housing part on the contacts, they can cancel.

Farther It is common in the collection room a kind of dirt bag or Insert dirt tray made of plastic film, in the tub-like bag absorbed particles and / or absorbed liquid collect. If the sensor contacts on the motor housing part clumsy are placed, the dirt bag is damaged, so that he is leaking.

It is therefore the object of the present invention, an advantageous Arrangement of sensor contacts in a suction device of the beginning to provide said type.

to Solution of the problem is in a suction device of provided in the aforementioned type that the at least one sensor a communication line penetrating the plenum boundary wall from the collecting part arranged in the collecting part to an outside having the plenum boundary wall, and that a signal connection for the sensor signal from the connection line in the collecting housing part to the control device arranged in the motor housing part is available.

One The basic idea of the invention is to contact the sensor directly to arrange in the collecting housing part and from there a connection line to outside, which in turn connects with the motor housing part stands. About the corresponding Signal connection, preferably flexible lines and / or Berührkontakte includes, the respective detection part is connected to the sensor. Of the Sensor example, a level sensor, a pressure sensor, a temperature sensor or the like. The sensor is expediently housed in the motor housing part, but is about with its detection part the signal connection in electrical connection.

Of the at least one sensor is in communication with the control device or forms part of it. In the simplest case can the control device by a shutdown contact or a Shutdown input of the suction motor to be formed. Overall, here is to note that the control device is a component of the Suction motor or a motor module containing the suction motor, can form. Thus it is possible that the at least a sensor a pure shutdown signal for switching off the suction motor sends, which is applied directly to the suction motor. It understands that a preferred embodiment is a more elaborate, preferably several monitoring and / or control functions comprising providing control means, for example a Microprocessor control or the like. This is optional and not necessary.

The Motor housing part is for example of the collecting housing part removable. 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 a motor housing contact surface arranged on the motor housing part. When the Sammelgehäu seteil and the motor housing part in a use position connected or mounted together, the contact surfaces are in contact. An additional operating action is expediently not required to the contact surfaces with each other to bring into contact.

The Contact surfaces of the contact connection are expediently on a side facing away from the plenum one of the collection space limiting housing wall arranged. So that is the Connecting line led out of the plenum to the outside. There are then the contact surfaces of the contact connection arranged to provide an electrical connection between the motor housing part and the collecting housing part.

It It is understood that in place of the contacts that are in touching contact with each other or are separable from each other, even flexible cables possible are, in particular, when the motor housing part movable is hinged to the collecting housing part.

The Housing wall section, next to the contact surfaces are arranged, is advantageously a peripheral part of a collecting space limiting, optionally multi-part or multi-component Housing wall. The contact surfaces are thus in the Arranged near a peripheral part. However, it is advantageous provided that the contact surfaces are not in front of a top the edge part (relative to the collecting housing part) or a bottom of the edge part (relative to the motor housing part) protrude, causing damage to the contact surfaces prevents.

Especially it is preferred if the contact surfaces close to or are arranged next to the edge part of the housing wall. This can one or both contact surfaces can be brought into contact affect. The contact surfaces can of course to protrude to an edge of the edge part, whereby the edge part still a mechanical protection of the contact surfaces forms, especially if these in a preferred embodiment are resilient.

Between the contact surfaces of the contact connection and the edge part is expediently a distance to the recording one of the edge part overlapping part of an arrangeable in the collection space Collection container available. The collection container is for example a trough-like or trough-like lining the collecting space, suitably made of plastic or other water-repellent or waterproof material. In the collection z. A liquid, especially moist dirt particles or the like collected become. Due to the fact that between the edge part of the housing wall and the contact surfaces is a distance is Damage to the collection container, in particular its Edge area, avoided. This keeps it waterproof. The Contact surfaces, for example, have a circumferential distance to the edge part.

The Housing wall section forms expediently a component of the penetrated by the connecting line Collecting space boundary wall, in particular an edge region thereof. It goes without saying that the housing wall part, outside of which the contact surfaces are arranged, also another Housing wall section may be that of the plenum boundary wall is spaced, through which passes the connecting line.

The Contact surfaces of the contact connection, at least one of Contact surfaces, is expediently when mounted on the collecting housing part motor housing part Covered by at least one cover from part or a covering and expediently also electrically isolated. Thus, for example, false signals of at least a sensor can be avoided. Also an electrical operating safety is improved in this way.

At least one of the contact surfaces, such as the collecting housing contact surface and / or the motor housing contact surface, 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 still an electrical connection contact, for example a grounding contact, an antistatic contact or the like, for example at the suction pipe connection or elsewhere in the collecting housing part is arranged.

Though would it be possible in one embodiment of the invention this connection contact via a flexible line with the motor housing part, in particular the control device in the motor housing part, to connect. However, it is advantageous provided that a further contact connection between one hand the arranged in the collecting housing part grounding contact and on the other hand, the motor housing part is present, conveniently over a terminal contact connection with (touch) pads, when removing the motor housing part of the collecting housing part is solvable.

The contact surfaces of the detachable 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 detachable contact are arranged in one place or in a narrowly limited area, so that, for example, protective measures to protect the contact surfaces against environmental influences, such as the aforementioned cover or the cover, all contact surfaces can protect.

The arranged in the plenum detection part is expediently an electrical contact surface of the at least one sensor. Thus, by way of example, a liquid level can be achieved by electrical means be recorded. If at least one sensor is a different sensor type is, for example, a temperature sensor, a pressure sensor or the like, is the sensing part corresponding to temperature, pressure or the like sensitive.

Of the at least one sensor comprises in a particularly preferred embodiment a first and a second arranged in the collecting space, with a the plenum boundary wall penetrating connection line with the control device connected detection part. Between two detection parts, which expediently Form components of a single sensor, an electrical Connection through collected in the collection space particles or collected there Moisture can be produced. The sensor generates in dependence from this electrical connection, the z. For example, the values "present" / "nonexistent" and / or "resistance high "/" low resistance "can have Sensor signal for controlling the suction motor.

The Connecting line between the outside of the plenum boundary wall and the inside expediently comprises an electrical conductive bolt, in particular a screw that the Penetration boundary wall penetrates.

For example is the bolt, especially the screw, from the outer circumference or the outside into the plenum boundary wall screwed.

One remote from the signal connection end of the bolt forms expediently the detection part of the at least one sensor or at least one Part of the detection part. Thus, therefore, the connection line and the detection part of one and the same component, in particular a bolt, be formed. It is understood that also a different molded electrically conductive member the plenum boundary wall can penetrate, wherein a arranged in the collecting space end of the Connecting part of the detection part of the at least one sensor forms, while the other, on the outside arranged 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 portion of a conductor track, of which the Plenum boundary wall penetrating bolt is penetrated. It would also be possible to get a track through the Passing through the collecting space boundary wall, expediently an arranged in the collecting space end of the conductor track the respective Detecting part of the at least one sensor forms. The conductor track expediently extends into one Area below a connection for a suction pipe.

Of the Bolt, the connecting line and / or the detection part at least partially forms, has expediently also one mechanically holding function. The bolt stops, for example Connection component for connecting a particularly flexible suction tube, So therefore a suction hose, to the collecting housing part, For example, the collection space boundary wall. The connection component contains, for example, a connection sleeve for the suction pipe.

Advantageous are contact points of the connection line and / or signal connection in the outer region of the sucker housing z. For example Test purposes accessible. It is, however expedient if the advantageous test contacts forming contact points not directly z. B. on a housing wall or another component are free, but this opposite are set back and / or closed. By means of suitable test equipment, for. B. measuring tips, can the function of the at least one sensor on at least one of Contact points are checked.

following An embodiment of the invention with reference to the drawing explained. Show it:

1 a perspective frontal oblique view of a suction device,

2a a bottom view of a housing upper part of the suction device 1 .

2 B a detailed view corresponding to a section B in 2a .

3 a housing lower part of the suction device according to 1 from above,

4 a detailed view corresponding to a section C in 3

5 a detailed view approximately corresponding to the section C in 3 but with a removed cover,

6a an inside view of the housing terteils,

6b a detailed view approximately corresponding to the detail D in 6a , and

7 a detail cross-section approximately along a section line AA in 1 or 6b ,

Inside a teatcup 11 a suction device 10 is a naturally aspirated engine 12 for generating a suction flow 13 arranged, which has a suction inlet 14 in the nipple housing 11 is sucked. To the suction inlet 14 an unillustrated hose can be connected. Inside the sucker housing 11 there is also a filter arrangement 15 for separating particles from the suction flow 13 ,

On a top 16 of the sucker housing 11 there is a recording 17 for holding the suction hose and / or a connection cable 18 with which the suction device 10 can be connected to an electrical supply network. Alternatively, a suction device with an accumulator would be possible. The suction device 10 is a portable suction device, on the underside rollers 19 . 20 are arranged. The front castors 20 are swivel castors. Furthermore, the suction device 10 on a carrying handle 21 at the top 16 be taken.

Between one the suction inlet 14 having front wall 22 and the top 16 of the sucker housing 11 extends a control wall 23 with controls 24 for operating the suction device 10 , The operating wall 23 is suitably inclined, so that the controls 24 are easily operated from diagonally above.

The controls 24 include a switch 25 which forms, so to speak, a main switch. With the switch 25 can the suction motor 12 be switched on and off. Furthermore, an automatic mode is adjustable, wherein the suction motor 12 always runs when a connected consumer electrical power through the suction device 10 receives what will be explained later. With the help of a Saugleistungs- or speed switch 26 can be a power of the suction motor 12 be set. An adjustment switch 27 allows electrical adjustment of the suction device 10 at a respective suction inlet 14 connected suction hose. With a cleaning switch 28 is a cleaning function of the suction device 10 switchable and / or parameterizable. One firmly on the suction device 10 installed outlet 29 allows the insertion of an electrical energy consumer. The power outlet 29 is with the connection cable 18 electrically connected.

The sucker housing 11 is constructed in two parts and has a motor housing part 30 and a z. B. a filter housing part forming collecting housing part 31 on. The motor housing part 30 forms an upper housing part 32 that on the a housing base 33 forming collecting housing part 31 is attached, see 1 , At a bottom 34a of the motor housing part 30 is a substantially circumferential groove 34 present, in which an engagement edge 35 of the collecting housing part 31 intervenes. Thus, therefore, the upper housing part sits 32 on the housing base 33 with its outer peripheral edge area 36 on.

The motor housing part 30 is with the collecting housing part 31 by manual, tool-free operable holding means 37 connected. The holding means 37 include tabs, for example 38 that the peripheral edge area 36 overlap and in retaining recesses 39 at the lower housing part 33 intervention. The tabs 38 are at warehouses 40 of the motor housing part 30 mounted pivotably and / or longitudinally displaceable, so that they are engaged or disengaged from the retaining recesses 39 can be brought.

Camps 40 and the associated retaining recesses 39 are directly above each other approximately in the area of a longitudinal center 41 from side walls 42 . 43 of the motor housing part 30 and the collection housing part 31 arranged.

A floor 44 as well as the suction inlet 14 having front wall 45 and a rear wall 46 of the collecting housing part 31 limit an interior 47 of the collecting housing part 31 , In the interior 47 is an optional large-sized filter bag 48 the filter assembly 15 arranged.

The suction device 10 However, it is also without the filter bag 48 operated. The interior 47 is to the motor housing part 30 Advantageously open. The interior 47 forms a collection room 110 for the immediate collection of from the suction flow 13 Separate 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 points beside its two side walls 42 a bottom wall 49 that the interior 47 of the collecting housing part 31 facing, a front wall 50 a rear wall 51 as well as a cover wall 52 on, at the same time the bottom of the recording 17 forms. The walls 49 to 52 define an interior 53 in which, among other things, an engine compartment 54 for the naturally aspirated engine 12 and one with the engine compartment 54 or the suction motor 12 communicating air duct arrangement are arranged. Apart from inflow openings or outflow openings of the air guide arrangement is the interior 53 closed.

The bottom wall 49 has essentially two openings, namely a suction inlet for the suction flow 13 and a mounting hole 57 through which the engine module 58 configured suction motor 12 in the engine compartment 54 can be inserted or removed from this again. The mounting hole 57 is sized so that the engine module 58 as a whole in the engine compartment 54 can be used or removed from there. This is just one with screws 59 - Quick release fasteners, preferably those for a tool-free installation, such as clamping lever or articulated lever or the like are also possible - on the motor housing part 30 fixed lid 60 to remove the mounting hole 57 in the motor housing part 30 mounted state closes. The naturally aspirated engine 12 is accessible for maintenance purposes, for example, for the change of carbon or brush in case of wear. A simple change of the engine module 58 is possible as a whole. The mounting hole 57 So it's on the bottom wall 49 of the motor housing part 30 , hence to one of its sucker housing walls 49a arranged.

One to the suction engine 12 leading suction inlet is a main filter 61 upstream. The main filter 61 is as a filter cartridge 62 designed in a filter holder 63 the bottom wall 49 is included.

In place of the filter bag 48 can the collection room 110 also directly to the intake from the suction flow 13 filtered-out particles or separated moisture. The collection room 110 is designed in the manner of a tub, which over the front suction inlet 14 is accessible.

When an operator pollutes the plenum 110 wants to avoid, but no filter bag 48 he can use the plenum 110 with a collection container 111 lining, which is also trough-like. The collection container 111 forms, so to speak, a lining of the collecting space 110 , edge sections 112 of the collection container 111 can be considered overlapping parts over border sections 113 the side walls 43 as well as the rear wall 46 as well as a border section 114 the front wall 45 overlap what's in 4 indicated in dashed lines. Now if the motor housing part 30 on the collecting housing part 31 is set, this edge section 112 between the groove 34 on the motor housing part 30 and the corresponding edge parts 113 . 114 clamped, so that a tight conclusion is given. Moreover, in the groove 34 expediently a seal 115 arranged, what a firm, tight hold the sump 111 in the collection room 110 provides.

However, the sump should be 111 be damaged at any point, especially not in the area of its edge sections 112 What in the worst case to a rupture and thus leakage of particles and / or liquid from the collection area of the collection container 111 could lead.

A sensor arrangement 116 of the suction device 10 , the signal connections 117 . 118 between detection parts 119 . 120 in the collection room 110 are arranged, and a sensor 121 has, in the motor housing part 30 arranged, is designed so that they are the collection container 111 not damaged.

The sensor 121 Detects a level of a liquid or other electrically conductive substance in the plenum 110 and generates a sensor signal in response thereto 122 , Now it would be possible, the naturally aspirated engine 12 based on the sensor signal 122 directly on or off, for example, if a predetermined, the detection parts 119 and or 120 reaching liquid level in the plenum 110 is reached and the sensor signal 122 a switching input of the suction motor 12 applied.

In the suction device 10 However, it is for the naturally aspirated engine 12 a control device 97 provided by the sensor 121 the sensor signal 122 receives and the naturally aspirated engine 12 controls. The sensor 121 is preferably on a circuit board 123 the control device 97 arranged, with a separate from the board construction of the sensor is quite possible.

The control device 97 is with the controls 24 influenced. Conveniently, the board 123 below the controls 24 arranged, ie below the operating wall 23 , please refer 7 , The control device 97 is with the naturally aspirated engine 12 , in particular the engine module 58 connected via electrical lines, not shown.

While the detection parts 119 . 120 in the collection room 110 , so in the interior 47 of the collecting housing part 31 , are arranged, run the signal connections 117 . 118 outside the collection room 110 , but electrically protected and hidden between the collecting housing part 31 and the motor housing part 30 ,

interconnectors 124 penetrate the front wall 45 holding a plenum boundary wall 125 forms. The connection lines 124 be by bolts 126 realized by an outside 127 the plenum boundary wall 125 through this to the collection room 110 with their free ends 128 protrude. The free en the 128 form the detection parts 119 . 120 of the sensor 121 , The free ends 128 are electrically conductive.

Bolts 126 also stand with tracks 129 in electrical contact, for example because they pass through the tracks 129 are screwed through, soldered with these or other similar contact. An in the drawing lower end of a respective trace 129 gets from one of the bolts 126 penetrated and is in electrical contact with this, for example, because the head of the bolt 126 on the free outside of the track 129 making electrical contact rests. A remote from this end end of each trace 129 is as a collecting housing contact surface 130 designed, the one on the motor housing part 30 arranged motor housing contact surface 131 a releasable contact connection 132 assigned.

If the motor housing part 30 on the collecting housing part 31 is mounted and mounted on this, the contact connection 132 closed, ie in each case a pair of contact surfaces 130 . 131 contacts each other so that the signal connections 117 . 118 between on the one hand the sensor 121 and on the other hand its sensing parts 119 . 120 are made.

The detection parts 119 . 120 form a first and a second detection part of the sensor 121 , When in the collection room 110 a level of a liquid or other electrically conductive substance the height of the detection parts 119 . 120 achieved, an electrical connection between the detection parts 119 . 120 made via the signal connections 117 . 188 to the sensor 121 leads. The sensor 121 So for example, a liquid level in the plenum 110 to capture. The detection parts 119 . 120 are below a suction pipe connection 133 arranged. Thus, therefore, a liquid level is as close as possible below the intake manifold 133 , at the same time the suction inlet 14 forms, through the detection parts 119 . 120 detected.

In the area of the components of the sensor arrangement 116 at the collecting housing part 31 are arranged, is still another electrical connection contact 134 present, via a detachable terminal contact connection 135 detachably connectable to the motor housing part. The terminal contact connection 135 is in the range of the sensor contact connection 132 arranged so that locally concentrated electrical contacts between on the one hand the motor housing part 30 and on the other hand, the collecting case part 31 can be adjusted or released. The connection contact 134 includes one in the region of a pipe sleeve 136 of the suction pipe connection 133 arranged antistatic or ground contact 137 , which produces an electrical connection to a suction pipe, not shown in the drawing, in particular flexible suction hose. The suction pipe connection 133 , in particular the pipe sleeve 136 , Expediently consists of an electrically conductive material, in particular plastic. Likewise, the suction pipe / suction hose is at least in its for contact with the suction pipe connection 133 and / or the grounding contact 137 provided contact region electrically conductive, for example, because it consists of electrically conductive plastic.

The ground contact 137 is as a spring contact 139 , For example, a spring tongue, designed. The spring contact 139 is through an end portion of a trace 138 formed whose other end than a contact surface 140 is trained.

The conductor track 138 is between the tracks 129 arranged and expediently runs parallel to these. The contact surface 140 is between the two header housings 130 arranged.

Conveniently, the mechanical configuration of the contact surfaces 130 . 140 same or identical. In the present example, the contact surfaces 130 . 140 each designed as spring contacts. For example, the contact surfaces 130 . 140 by outer sides of cross-sectionally U-shaped spring tongues 141 educated.

For making electrical contacts with the contact surfaces 130 . 140 are the motor housing contact surfaces 131 as well as a terminal contact area 142 intended. The contact surfaces 131 . 142 be through free ends of bolts 143 formed in front of the bottom 34a of the motor housing part 30 protrude. However, the bolts are standing 143 not in front of a bottom edge 144 of the motor housing part 30 before, so that they are mechanically protected. The edge 144 is by a peripheral edge or a cover 145 of the motor housing part 30 formed 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 through the cover 145 are protected against environmental influences. Bolts 143 are for example through the bottom wall 49 screwed through, at the expediently for the bolt 143 Screw domes are present. The bolt 143 that the contact surface 140 is connected to a ground potential. The other two bolts 143 are via electrical lines 146 With the sensor 121 electrically connected.

The tracks 129 . 138 are on a conductor carrier 147 arranged and stand in front of the top with the spring tongues 141 in front. The conductor carrier 147 has a central recess 148 for the pipe sleeve 136 extending through the conductor carrier 147 and the front wall 45 extends through. Since Lich next to the recess 148 Carrier sections extend 149 for carrying the conductor tracks 129 , The tracks 129 are in end shots 150 of the conductor carrier 147 plugged in. The pictures 150 are below the picture 150 , Next up are to hold the tracks 129 at the support sections 149 horizontal bracket 151 provided so that the conductor tracks 129 above and below, in each case in their end regions, on the support sections 149 being held.

Mechanically resilient and a hold of the conductor carrier 147 showing its fastening by means of bolts 126 passing through the tracks 129 through and further the conductor carrier 147 through in screw domes 152 an inner part 153 are screwed, as a fitting for the filter bag 48 serves and of the pipe sleeve 136 is penetrated accordingly. Thus, the bolts have 126 several functions, namely contact surfaces and connecting lines for the sensor 121 to form and further a holding function with respect to housing components with respect to the sucker housing 11 ,

At the inner part 153 is a filter bag holder 154 pivotally mounted, which holds the filter bag 48 in its lower position, ie to the pipe sleeve 136 towards, advantageous spring loaded.

The free ends 128 the bolt 126 stand in recesses 155 in front. The free ends 128 the bolt 126 are not in front of an interior front 156 of the inner part 153 so that they are set back from the same, which prevents mis-contacting or Fehlsensierung.

The grounding contact 137 providing conductor track 138 is with a bolt 157 on the sucker housing 11 attached. The bolt 157 penetrates one on the conductor carrier 147 Abstüt Zendes, the grounding contact 137 holding piece 158 as well as a support 159 , with which the conductor carrier 147 above the recess 158 on the front wall 45 supported. The bolt 157 is in the inner part 153 screwed in and is also conveniently not in front of the inner front 156 in front. So keep the bolts so 126 . 157 with the inner part 153 and the conductor carrier 147 , in turn, the pipe sleeve 136 each, connecting components for connecting a suction pipe to the collecting housing part 31 ,

On the outside, the connection assembly for the suction pipe is also blinded, in particular the conductor tracks 129 . 138 through a cover part 160 covered. The cover part 160 has protective protrusions on its upper side 161 between which the spring tongues 141 are arranged and in front of the spring tongues 141 protrude so that they are protected from damage. The cover part 160 has a recess for the intake manifold, not shown. The cover part 160 is for example to the nipple housing 11 infected and / or locked with this and / or glued in a manner not shown. Between the spring tongues 141 and the protection projections 161 on the one hand and on the other hand the edge part 114 is a distance 162 present in the edge section 112 of the collection container 111 can be placed without passing through the components of the contact connections 132 . 135 when assembling the motor housing part 30 and the collection housing part 31 to be damaged.

On the cover 160 are openings 163 provided over the heads of the bolts 126 are accessible. Thus, contact points 164 the signal connections 117 . 118 or the connecting lines 124 accessible from the outside, z. For testing purposes. However, the contact points 164 opposite a front side of the cover part 160 set back and the openings 163 small. The contact points 164 are advantageous only for suitable test equipment, especially probes, accessible.

QUOTES INCLUDE IN THE DESCRIPTION

This list The documents listed by the applicant have been automated generated and is solely for better information recorded by the reader. The list is not part of the German Patent or utility model application. The DPMA takes over no liability for any errors or omissions.

Cited patent literature

• DE 10130995 A1 [0002]

Claims (18)

Suction device with a nipple housing ( 11 ) and one in a motor housing part ( 30 ) of the sucker housing ( 11 ) arranged suction motor ( 12 ) for generating a suction flow ( 13 ), with one in a collecting housing part ( 31 ) of the sucker housing ( 11 ) arranged by a collecting space boundary wall ( 125 ) limited collection space ( 110 ) for collecting from the suction stream ( 13 ) separated particles and / or separate moisture, with at least one in the collecting space ( 110 ) arranged detection part ( 119 . 120 ) sensor ( 121 ) for detecting a state, in particular a filling level, in the collecting space ( 110 ), and a control device ( 97 ) for controlling, in particular for switching off, the suction motor ( 12 ) in response to a sensor signal ( 122 ) of the at least one sensor ( 121 ), wherein the motor housing part ( 30 ) relative to the collecting housing part ( 31 ) for access to the collection room ( 110 ) is movable, characterized in that the at least one sensor ( 121 ) a collecting space boundary wall ( 125 ) penetrating connection line ( 124 ) of which in the collecting space ( 110 ) arranged detection part ( 119 . 120 ) to an outside ( 127 ) the collecting space boundary wall ( 125 ), and that a signal connection ( 117 . 118 ) for the sensor signal ( 122 ) from the connecting line ( 124 ) in the collecting housing part ( 31 ) to the in the motor housing part ( 30 ) arranged control device ( 97 ) is available Suction device according to claim 1, characterized in that the signal connection ( 117 . 118 ) at least one at a removal of the motor housing part ( 30 ) of the collecting housing part ( 31 ) detachable contact connection ( 132 ), one on the collecting housing part ( 31 ) arranged collecting housing contact surface ( 130 ) and one on the motor housing part ( 30 ) arranged motor housing contact surface ( 131 ), which at at the collecting housing part ( 31 ) mounted motor housing part ( 30 ) are in contact with each other. Suction device according to claim 2, characterized in that the contact surfaces ( 130 . 131 ) of the contact connection ( 132 ) at one of the plenum ( 110 ) facing away from the collecting space ( 110 ) are arranged limiting housing wall. Suction device according to claim 2 or 3, characterized in that a housing wall portion, next to the contact surfaces ( 130 . 131 ), an edge part ( 113 . 114 ) one the collecting space ( 110 ) forms a limiting housing wall. Suction device according to claim 4, characterized in that at least one of the contact surfaces ( 130 . 131 ) next to the edge part ( 113 . 114 ) is arranged. Suction device according to one of claims 2 to 5, characterized in that between the contact surfaces ( 130 . 131 ) of the contact connection ( 132 ) and the housing wall, in particular the edge part ( 113 . 114 ), a distance ( 162 ) for receiving a the edge part ( 113 . 114 ) overlapping part ( 112 ) one in the collecting space ( 110 ) can be arranged collecting container ( 111 ) is available. Suction device according to one of claims 2 to 6, characterized in that the Gehäusewandpartie, in addition to the con tact surfaces ( 130 . 131 ) are arranged, a part of the of the connecting line ( 124 ) penetrated collecting space boundary wall ( 125 ), in particular a border area ( 113 . 114 ) the collecting space boundary wall ( 125 ) forms. Suction device according to one of claims 2 to 7, characterized in that the contact surfaces of the contact connection ( 132 ) at the collecting housing part ( 31 ) mounted motor housing part ( 30 ) by at least one cover ( 145 ), in particular electrically insulated, are covered. Suction device according to one of claims 2 to 8, characterized in that at least one of the contact surfaces ( 130 . 131 ) as a spring contact or a spring tongue ( 141 ) is configured. Suction device according to one of claims 1 to 9, characterized in that it is attached to the collecting housing part ( 31 ), in particular a suction pipe connection ( 133 ), electrical connection contact ( 134 ), in particular a grounding contact ( 137 ), and that the connection contact ( 134 ) via a removal of the motor housing part ( 30 ) of the collecting housing part ( 31 ) releasable terminal contact connection ( 135 ) with the motor housing part ( 30 ) is connected or connectable. Suction device according to claim 10, characterized in that contact surfaces of the detachable terminal contact connection ( 135 ) preferably in the region of the collecting housing contact surface ( 130 ) and the motor housing contact surface ( 131 ) to the at least one sensor ( 121 ) leading signal connection ( 117 . 118 ) are arranged. Suction device according to one of the preceding claims, characterized in that in the collecting space ( 110 ) arranged detection part ( 119 . 120 ) an electrical contact surface of the at least one sensor ( 121 ). Suction device according to one of the preceding claims, characterized in that the at least one sensor ( 121 ) a first and a second in the collecting space ( 110 ) arranged, each with a collecting space boundary wall ( 125 ) penetrating connection line ( 124 ) with the control device ( 97 ) connected detection part ( 119 . 120 ), wherein the at least one sensor ( 121 ) for detecting a by means of in the collecting space ( 110 ) collected particles and / or accumulated moisture electrical connection between the detection parts ( 119 . 120 ) is configured. Suction device according to one of the preceding claims, characterized in that the connecting line ( 124 ) an electrically conductive bolt ( 126 ) or by the bolt ( 126 ) forming the collecting space boundary wall ( 125 ), especially from the outside ( 127 ), penetrates. Suction device according to claim 14, characterized in that one of the signal connection ( 117 . 118 ) remote end ( 128 ) of the bolt ( 126 ) the detection part ( 119 . 120 ) of the at least one sensor ( 121 ). Suction device according to claim 14 or 15, characterized in that the bolt ( 126 ) a connection component for connecting a particularly flexible suction pipe to the collecting housing part ( 31 ), in particular the collecting space boundary wall ( 125 ) holds. Suction device according to one of claims 2 to 16, characterized in that at least one of the contact surfaces by a partial section, in particular an end region of a conductor track ( 129 ) is formed, the collecting space boundary wall ( 125 ) penetrating bolts ( 126 ) is penetrated. Suction device according to claim 17, characterized in that the conductor track ( 129 ) extends into a region below a port for a suction tube.