DE202012100512U1 - At least three parts existing air pump system - Google Patents

Abstract

Air pump system consisting of at least three parts (1, 3, 3 ') with - a hand-held device (1) which comprises an electrically drivable motor (7) and with - at least one first and at least one second working head (3) that can be attached to the hand-held device (1) , 3 '), the first working head (3) and the second working head (3') having different pumping devices (10) which, when the respective working head (3, 3 ') is attached to the hand-held device (1) with the electrically driven motor (7) are brought into operative connection to generate an air volume flow.

Description

The present invention relates to an air pump system consisting of at least three parts.

Air pump systems are already known from the prior art. For example, shows the DE 31 18 244 A1 an air pump in which a piston is guided in a chamber for generating a volume flow.

By the structural design of a pump shown in the DE patent application of the producible pressure and the volume can be generated. For many practical situations, it would be desirable to have air pumps which can be selectively adapted to the particular operation in terms of necessary air volumes and necessary pressure.

The object of the invention is to provide an air pump system which has a higher flexibility compared to the air pump systems known from the prior art.

The above object is achieved by an air pump system comprising the features in claim 1. Further advantageous embodiments are described by the subclaims.

The air pump system according to the invention consists of at least three parts and comprises a hand-held device which has an electrically drivable motor and at least one first and at least one second working head which can be fastened to the hand-held device. In a first embodiment, the at least one first working head and the at least one second working head may be selectively attachable to the handset. For example, the handset may include a handle and / or handle portion to facilitate handling by a user. It will be understood by those skilled in the art that the electrically powered motor may have different performance in many existing embodiments. It is conceivable, for example, that the electrically driven motor can only be taken in and out of operation. It may also be that the electrically driven motor is gradually adjustable.

For example, the handset can be made of plastic and have a cavity in which the electrically driven motor is accommodated.

In the present invention, the first working head and the second working head have different pumping devices formed, which are brought into effect when attaching the respective working head on the handset with the electrically driven motor for generating an air flow rate. In this case, it may be that the at least one first working head and the at least one second working head can be brought into operative connection with the electrically drivable motor at the same time. Here, the at least one first working head and the at least one second working head can be arranged on opposite sides of the hand-held device. In a preferred embodiment, only the at least one first working head or the at least one second working head can be fastened to the hand-held device, so that it is brought into operative connection with the electrically drivable motor. The first working head and the second working head may have different geometrical configurations, so that it is optically marked which working head is respectively arranged on the hand-held device.

Preferably, one of the two pumping devices can be designed as a volume pump with a radial compressor and a further pumping device as a reciprocating piston pump. The invention is not limited to these two pumping devices, so that also further pumping devices can be part of embodiments.

In addition, it may be that an electrical energy store is arranged in or on the hand-held device and / or the hand-held device has electrical contact means for supplying the motor with electrical energy and / or for charging the energy store. For example, the battery may be formed as a lithium-ion battery. It is also conceivable that a transformer can be coupled directly to the power supply to the electrical contact means. It may also be that the energy store is designed as a replaceable energy storage. Further, the handset may have one or more flaps and / or closures over which the energy storage can be inserted into the handset and removed from the handset.

If an energy storage device is present, the handheld device can have a charge status display for the energy storage device. For example, the charge status display bar and / or further visual means for signaling the state of charge of the energy storage device.

In addition, it may be that the air pump system includes a station with electrical counter contact means which abut in the arrangement of the handset in or at the station for charging the energy storage device to the electrical contact means. It is conceivable here that the handset when loading the energy storage is standing or lying in the station. Furthermore, that can Handset with or without the handset fixed work head in or be arranged at the station.

To take the electrically driven motor in and out of operation, the handset may include one or more actuating means. For example, this may be one or more pushing means and / or operating buttons.

In order to be able to fix the respective working head in a simple and uncomplicated manner on the handheld device and to enable a fast changing operation of the working heads, it may be that the at least one first working head and the at least one second working head each have one or more locking means. Further, it may be that the handset has one or more corresponding to the locking means formed Gegenverriegelungsmittel, wherein under plant of each working head on the handset and a relative rotational movement of the respective working head to the handset, the respective working head on the handset via the locking means and Gegenverriegelungsmittel is fixed, so that the respective pumping device of the fixed to the handset working head is brought into operative connection with the electrically driven motor. For example, the one or more locking means of the at least one first and / or the at least one second working head may be formed by one or more bolts and / or pins which each have a head portion at their free ends facing away from the working head. In addition, the counter locking means may be formed as preferably arcuate and radially extending about a longitudinal axis of the hand tool recesses through which the head can engage in a first region and is held substantially axially immovable after relative rotation of the working head to the handset in a second region. It is conceivable here that by appropriate design of the arcuate recesses and the locking means or bolts and / or pins of the working head is guided in relative rotational movement in a forced movement path.

It may also be that the handset comprises further counter-locking means, wherein under plant of the respective working head on the handset and a relative rotation of the respective working head to the handset, the respective working head on the handset on the locking means and the other Gegenverriegelungsmittel is fixed and this in a non-use position without Active connection is arranged with the electrically driven motor on the handset. The further counter-locking means and the counter-locking means may have an identical configuration. It may be that a working head is arranged on the hand-held device and brought into operative connection with the electrically drivable motor and that a further working head is also arranged on the hand-held device and has not been brought into operative connection with the electrically drivable motor in a non-use position.

It is also conceivable that the locking means and the counter-locking means and / or the locking means and the other counter-locking means are brought into positive connection with each other after relative rotational movement of the respective working head to the handset. Further, it may be that the fixation on a relative rotation of the rotational movement counteracting detachable and the respective working head of the handset is removable. For example, the relative rotational movement, by means of which the respective working head can be fixed and / or released on the handheld device, can amount to at least approximately 90 °.

Preferably, the electrically driven motor may have a shaft extending along a longitudinal axis of the hand-held device, which has at its free end a toothed wheel for driving the respective working head arranged on the hand-held device. Here, the gear can rest on the shaft and have a substantially conical shape, which tapers with increasing distance from the shaft. The gear may be integrally formed with the shaft, but also as a separate component, which is connected via suitable means with the shaft.

In addition, it may be that the handset and / or the respective attachable to the handset working heads have an LED unit for illuminating a workspace. The LED unit may communicate with one or more commissioning and retirement switches.

In a further embodiment, the hand-held device and / or the at least one first and / or the at least one second working head have a cavity for receiving additional components, such as, in particular, adapter pieces, attachments or the like. It is also conceivable that the cavity is accessible via one or more flaps and / or closable openings.

In the following, embodiments of the invention and their advantages with reference to the accompanying figures will be explained in more detail. The proportions of the individual elements to one another in the figures do not always correspond to the actual size ratios, since some shapes are simplified and other shapes are shown enlarged in relation to other elements for better illustration.

1 shows a schematic perspective view of an embodiment of a hand-held device with a first attached to the hand-held working head, as they can be used for the air pump system according to the invention;

2 shows a schematic perspective view of an embodiment of a hand-held device with a second attachment to the hand-held working head, as they can be used for the air pump system according to the invention;

3 shows a schematic perspective view of an embodiment of a hand-held device, as it can be used for the air pump system according to the invention;

4 shows a schematic perspective view of a first and a second working head, as they can be used for an embodiment of an air pump system according to the invention;

5 shows a schematic cross-section through an embodiment of a handset with attached to the handset first working head;

6 shows a schematic cross section through an embodiment of a second working head;

7 shows several views of a cone-shaped gear, as it can be used for the air pump system according to the invention;

8th shows a schematic plan view of locking means and Gegenverriegelungsmittel, as can be used for an inventive air pump system use;

9 shows a schematic cross section through locking means, as they can be used for the air pump system according to the invention; For identical or equivalent elements of the invention, identical reference numerals are used. Furthermore, for the sake of clarity, only reference symbols are shown in the individual figures, which are required for the description of the respective figure. The illustrated embodiments are merely examples of how the system of the invention may be configured and are not an exhaustive limitation.

1 shows a schematic perspective view of an embodiment of a hand-held device 1 with a first on the handset 1 fixed working head 3 , In the handset 1 is an energy storage 5 arranged, a motor 7 energized. The energy storage 5 is as a lithium-ion battery 18 educated. About the confirmation means 9 can the engine 7 in operation and taken out of service. The working head 3 includes a pumping device 10 , which in the present case as a reciprocating pump 11 is trained. To drive the pumping device 10 or the reciprocating pump 11 is the engine 7 over a wave 13 with the pumping device 10 or the reciprocating pump 11 connected. To issue the by the pumping device 10 or the reciprocating pump 11 generated air volume flow has the working head 3 an air outlet 15 , The wave 13 is about the engine 7 about a longitudinal axis A of the handset 1 rotatable trained.

2 shows a schematic perspective view of an embodiment of a hand-held device 1 with a second hand-held working head 3 ' , The pumping device 10 is concerning the working head 3 ' as a volume pump 12 with radial compressor 17 educated. The centrifugal compressor 17 is about the wave 13 rotatable about the longitudinal axis A of the handset 1 drivable. Evident are still an air intake 16 for the centrifugal compressor 17 of the second working head 3 ' and an air outlet opening 15 ' for the air volume flow. The motor 7 and thus the volume pump 12 are analogous to the handset 1 with reciprocating pump 11 (see. 1 ) via actuating means 9 in operation and out of service.

3 shows a schematic perspective view of an embodiment of a hand-held device 1 how it can be used for the air pump system according to the invention. The handset 1 has a roof in the embodiment shown 2 with stop surface 4 for the respective working head 3 respectively. 3 ' , The stop surface 4 is arcuate and about the longitudinal axis A of the handset 1 running recesses 6 and 6 ' Mistake. The recesses 6 and 6 ' are as a counter locking agent 8th and 8th' for locking means 22 and 22 ' (see. 8th and 9 ) of the respective working head 3 respectively. 3 ' educated. The locking means 22 and 22 ' of the respective working head 3 respectively. 3 ' are above the circular openings 19 and 19 ' for movement along the respective arcuate path 6 respectively. 6 ' used. Upon movement of the locking means 22 and 22 ' along the arcuate path 6 and 6 ' and relative rotation of the respective working head 3 respectively. 3 ' to the handset 1 is the respective working head 3 respectively 3 ' with the stop surface 4 brought into contact and axially immovable on the handset 1 held. The counter locking means 8th and 8th' as well as the locking means 22 and 22 ' are such that both the first working head 3 ' (see. 1 ) as well as the second working head 3 '' (see. 2 ) on the handset 1 over the locking means 22 and 22 ' and the counter locking means 8th and 8th' is fastened. Next you can see that on the shaft 13 arranged gear 21 (detailed in 7 ) through the roof 2 and the stop surface 4 attacks while the shaft 13 from outside inaccessible in the roof 2 or in the hand-held device 1 is arranged.

4 shows a schematic perspective view of a first and a second working head 3 and 3 ' , Both working heads 3 and 3 ' are selective on the handset 1 attachable (cf. 1 and 2 ).

5 shows a schematic cross section through an embodiment of a hand-held device 1 with the handset 1 attached first working head 3 , For visualization of an actual pressure has the working head 3 a pressure gauge 20 , The pressure gauge 20 is an integral part of the working head 3 and together with the working head 3 via a relative rotational movement of the working head 3 to the handset 1 from the handset 1 removable.

6 shows a schematic cross section through an embodiment of a second working head 3 ' , As previously mentioned, the second working head has 3 ' a pumping device 10 which as a volume pump 12 with radial compressor 17 is trained. In addition, the second working head 3 ' an air intake opening 16 and an air outlet 15 on.

7 shows several views I, II and III of a cone-shaped gear 21 how it can be used for the air pump system according to the invention. The cone-shaped design allows the working head 3 respectively. 3 ' on the handset 1 to arrange without first the shaft 13 (see. 1 ).

8th shows a schematic plan view of locking means 22 and 22 ' a working head 3 respectively. 3 ' and counter locking means 8th and 8th' a handset 1 as can be used for an inventive air pump system use. The locking means 22 and 22 ' are by locking bolts 24 and 24 ' educated. Shown is also a gear 21 (see. 7 ) of the handset 1 which with the arrangement of the respective working head 3 respectively. 3 ' on the handset 1 in an opening 26 of the respective working head 3 respectively. 3 ' dips. Furthermore, the handset has 1 circular openings 19 and 19 ' , in which the bolts in the arrangement of the working head 3 respectively. 3 ' on the handset 1 plunge. The stop surface 4 of the handset 1 is at the handset 1 arranged working head 3 respectively. 3 ' at a counter stop surface 28 of the working head 3 respectively. 3 ' at.

9 shows a schematic cross section through locking means 22 and 22 ' , how they can be used for the air pump system according to the invention analogous to 8th are the locking devices 22 and 22 ' as a locking bolt 24 and 24 ' educated. The locking bolts 24 and 24 ' have a head section at their free end 30 respectively. 30 ' , which in the in 8th shown circular openings 19 can be used. The diameter of the head sections 30 and 30 ' is greater than the diameter of the arcuate recess, allowing for relative rotation of the working head 3 respectively. 3 ' to the handset 1 the holding head 3 respectively. 3 ' on the handset 1 over the head sections 30 and 30 ' fixed axially immovable.

The invention has been described with reference to a preferred embodiment. However, it will be apparent to those skilled in the art that modifications or changes may be made to the invention without departing from the scope of the following claims.

LIST OF REFERENCE NUMBERS

1

handset

2

top, roof

3

working head

4

stop surface

5

energy storage

6

Arched recess

7

engine

8th

Counter locking means

9

actuating means

10

pumping device

11

reciprocating pump

12

volume pump

13

wave

15

Air outlet opening

16

air intake opening

17

centrifugal compressors

18

Lithium-ion battery

19

Circular opening

20

pressure gauge

21

gear

22

locking means

24

locking bolt

26

opening

28

Thrust face

30

header

A

Longitudinal axis handset

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• DE 3118244 A1 [0002]

Claims (14)

From at least three parts ( 1 . 3 . 3 ' ) existing air pump system with - a hand-held device ( 1 ), which has an electrically driven motor ( 7 ) and having - at least a first and at least a second on the handset ( 1 ) attachable working head ( 3 . 3 ' ), the first working head ( 3 ) and the second working head ( 3 ' ) different pumping devices ( 10 ) have formed when attaching the respective working head ( 3 . 3 ' ) on the handset ( 1 ) with the electrically driven motor ( 7 ) are brought into operative connection for generating an air volume flow. Air pump system according to claim 1, in which in or on the handset ( 1 ) an electrical energy store ( 5 ) is arranged and / or wherein the handset ( 1 ) electrical contact means for supplying the motor ( 7 ) with electrical energy and / or for charging the energy store ( 5 ). Air pump system according to claim 2, in which the hand-held device ( 1 ) an exchangeable energy store ( 5 ) owns. Air pump system according to claim 2 or 3, wherein the handset ( 1 ) has a charge level indicator for the energy storage. Air pump system according to one or more of Claims 2 to 4, in which the air pump system comprises a station with counter-contact electrical means which, when the hand-held device is arranged ( 1 ) abut in or at the station for charging the energy storage device to the electrical contact means. Air pump system according to one or more of the preceding claims, in which the hand-held device ( 1 ) one or more actuating means ( 9 ) for putting the electrically driven motor into and out of service ( 7 ). Air pump system according to one or more of the preceding claims, wherein the at least one first and the at least one second working head ( 3 . 3 ' ) one or more locking means ( 22 . 22 ' ) and the handset ( 1 ) one or more to the locking means ( 22 . 22 ' ) correspondingly formed counter locking means ( 8th . 8th' ), whereby under installation of the respective working head ( 3 . 3 ' ) on the handset ( 1 ) and a relative rotational movement of the respective working head ( 3 . 3 ' ) to the handset ( 1 ) the respective working head ( 3 . 3 ' ) on the handset ( 1 ) via the locking means ( 22 . 22 ' ) and counter locking means ( 8th . 8th' ) is fixable, so that the respective pump system ( 10 ) of the handset ( 1 ) fixed working head ( 3 . 3 ' ) with the electrically driven motor ( 7 ) is brought into operative connection. Air pump system according to claim 7, in which the hand-held device ( 1 ) comprises further Gegenverriegelungsmittel, wherein under investment of the respective working head ( 3 . 3 ' ) on the handset ( 1 ) and a relative rotational movement of the respective working head ( 3 . 3 ' ) to the handset ( 1 ) the respective working head ( 3 . 3 ' ) on the handset ( 1 ) via the locking means ( 22 . 22 ' ) and the other counter-locking means is fixable and in this case in a non-use position without operative connection with the electrically driven motor ( 7 ) on the handset ( 1 ) is arranged. Air pump system according to claim 7 or 8, wherein the locking means ( 22 . 22 ' ) and the counter locking means ( 8th . 8th' ) and / or the locking means ( 22 . 22 ' ) and the other counter locking means for relative rotational movement of the respective working head ( 3 . 3 ' ) to the handset ( 1 ) are positively connected with each other. Air pump system according to one or more of Claims 7 to 9, in which the fixing can be released via a rotational movement directed counter to the relative rotational movement and the respective working head ( 3 . 3 ' ) from the handset ( 1 ) is removable. Air pump system according to one or more of the preceding claims, in which the electric drivable motor ( 7 ) is preferably along a longitudinal axis (A) of the handset ( 1 ) extending shaft ( 13 ), which at its free end a gear ( 21 ) for driving the respective on the handset ( 1 ) arranged working head ( 3 . 3 ' ) with pumping device ( 10 ) having. An air pump system according to claim 11, wherein the gear ( 21 ) on the shaft ( 13 ) and has a substantially conical shape, which increases with increasing distance from the shaft ( 13 ) rejuvenated. Air pump system according to one or more of the preceding claims, in which the hand-held device ( 1 ) and / or the respective work heads attachable to the hand-held device ( 3 . 3 ' ) have an LED unit for illuminating a work area. Air pump system according to one or more of the preceding claims, wherein the hand-held device and / or the at least one first and / or the at least one second working head a cavity for receiving additional components, such as in particular adapter pieces, attachments or the like.

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