DE102016201020A1 - Adjustment device for a throttle valve - Google Patents

Abstract

The invention relates to an adjusting device for a throttle flap, wherein the adjusting device (1) has a housing (10) with a first space (11) and with a second space (12). The adjusting device (1) further comprises an actuator (20, 22) arranged in the first space (11) and an actuator (30, 31) arranged at least in sections in the second space (12). In this case, the actuator (30, 31) of an outer space (2) outside the housing (10) accessible. In order to improve the heat dissipation of the actuator (30, 31), to make the housing (10) lighter and less expensive and to protect the second space (12) against ingress of fluid media, dirt and dust, it is provided that between the inner wall (13) of the second space (12) and the outer wall (32) of the actuator (30, 31) a seal (50, 50 a, 50 b) is arranged, which seals the second space (12) against the outer space (2) the seal (50) is molded onto the outer wall (32) of the actuator (30, 31).

Description

Field of the invention

The invention relates to an adjusting device for a throttle valve and an actuator for an adjusting device for a throttle valve

State of the art

Adjustments for throttle valves are known from the prior art, for example for the metering of the fresh air supply for an internal combustion engine.

Such a control device often has a housing with a lower housing part and with a lid, wherein the lid is connected to the lower housing part so that the penetration of dirt or dust or fluid media or fluids (liquids or gases) avoided inside the housing can be. The housing has a first and a second space. In this case, an actuator, such as a throttle body is arranged in a first space. In a separate from the first room second space an actuator with electrical connections and a drive wheel is arranged. The enclosed housing protects the actuator with the electrical connections and the drive wheel against damage from fluids, dirt or dust entering from the outside.

The DE 10 2008 055 127 A1 shows such a throttle control device.

Disclosure of the invention

The invention is based on the recognition that heating of the actuator can occur during operation of the adjusting device. A challenge is to ensure the heat dissipation of the actuator so that the actuator is not overheated and thereby damaged.

Furthermore, it has been found that the known from the prior art housing must enclose a large volume due to the actuator encapsulating the second space, whereby much material is consumed. On the one hand, this increases the weight of the throttle body and, moreover, also leads to high material costs. In view of the goals, for example in the automotive industry, to reduce the fuel consumption of internal combustion engines, the weight reduction of the components is becoming increasingly important.

A reduction in weight due to the use of smaller wall thicknesses is only possible within certain limits for reasons of stability. The use of smaller actuators are limited by minimum requirements for the torque to be transmitted. Another possibility is to use materials with a specific lower weight. Also, this option is due to requirements for the mechanical stability and to the temperature and pressure requirements of the housing only limited use or is not practical because of the high cost of highly stable lightweight materials.

There may therefore be a need to provide a throttle valve actuator in which the actuator can be particularly well and easily cooled, which is particularly light and at the same time mechanically stable enough and temperature resistant, and in which the interior of the housing in front of the outside of the housing fluids , Dirt and dust is protected.

Advantages of the invention

This need can be met by the subject matter of the present invention according to the independent claims. Advantageous embodiments of the present invention are described in the dependent claims.

According to a first aspect of the invention, an adjusting device for a throttle valve is proposed.

In this case, the adjusting device has or comprises: a housing with a first space and with a second space, an actuator arranged in the first space, and an actuator arranged at least in sections in the second space. It is envisaged that the actuator is accessible from an outside space outside the housing, wherein between the inner wall of the second space and the outer wall of the actuator, a seal is arranged, which seals the second space against the outer space, wherein the seal to the outer wall of the actuator is injected.

The gasket can be positioned accurately by injection molding, i. be arranged with low position tolerances, production safe and repeatable on the outer wall of the actuator. The seal can thereby be arranged captively on the outer wall of the actuator.

In other words, the housing of the adjusting device has a second space, which is not closed by the housing as such, but (without mounted actuator) is open to the outside. The actuator is arranged in the second space. He is, however, because of that Housing on the second room is not completed, accessible from the outside.

As a result, the heat dissipation of the example designed as an electric motor actuator is improved at the same time advantageous. Because through the opening of the housing, for example, ambient air can reach at least a part of the actuator and thereby cause a cooling (for example by convection), which is not possible in a completely enclosed housing with the same efficiency. At the same time advantageously material is saved on the housing in this way, since the opening does not have to be closed.

Although the actuator used in the second room reduces the opening area of the second room to the outside. However, in order to protect the interior of the housing, in particular the part of the actuator arranged in the second space from fluids, dirt or dust entering from the exterior, the seal arranged between the outer wall of the actuator and the inner wall of the second space is advantageously provided. Thus, the seal is not ineffective due to a mounting error is advantageously the seal molded onto the outer wall of the actuator. This can advantageously take place before the assembly of the actuator in the second space, so that the seal can already be checked for the quality during the production of the actuator. The material of the seal can initially be present in a liquid or flowable state and applied to the outer wall of the actuator or the actuator housing. For example, by chemical reactions, the material of the seal can then reach its final state and act as a seal. It is crucial that the seal is firmly connected to the outer wall of the actuator and in contrast, for example, to an O-ring does not have to be manually and releasably positioned at this. The fact that the seal is molded onto the outer wall of the actuator is advantageously also the maintenance or repair of the adjusting device simplified. Because when replacing, for example, the actuator that only needs to be removed from the second room and used again after the repair. In this case, it is not necessary to pay attention to the correct seating of the seal since, after the injection molding and possibly the chemical reaction, the seal is firmly connected to the outer wall of the actuator.

The term "a seal" does not exclude the majority. In other words, the term "a seal" is synonymous with the term "at least one seal". For example, exactly one seal may be arranged or molded on the outer wall of the actuator. However, it is also possible that more than one seal is arranged or molded on the outer wall of the actuator.

The housing may have, for example, a housing lower part and a cover, wherein in the assembled state the cover is fastened to the housing lower part.

The second room may in particular be a separate room from the first room. For example, it may be separated from the first room by an (intermediate) wall.

The first space and the second space may be arranged, for example, in the lower housing part. The second space may have, for example, on an opening facing away from the lid an opening through which the actuator is accessible from the outside.

By way of example, only that part space can be sealed off from the outside space by the seal, which is located inside the housing with respect to the opening in the second space. Thus, the protected from fluids, dirt and dust subspace of the second space is limited at its outer space end facing by the (at least one) seal.

The actuator can be fixed to the housing via a retaining plate. In this case, the holding plate on the lower housing part, in a region adjacent to the cover, be fixed, for example, be screwed, fixed by rivets, be glued or welded.

The actuator may be accessible from the exterior at a first end. The actuator may have at one remote from the first end second end protruding from the actuator housing shaft. The actuator may comprise a drive wheel which is e.g. can be attached to the shaft. By means of the driving wheel, e.g. may be formed as a gear or a rubber wheel, may e.g. a torque is transmitted to the actuator.

The actuator may be formed as a pivotally mounted about an axis of rotation throttle body. In the housing, a transmission arranged between the actuator and the actuator for transmitting a torque of the actuator may be provided on the actuator.

In a development it is provided that the actuator has a fluid-tight closed actuator housing, wherein the outer wall is an outer wall of the actuator housing. With In other words, the actuator is designed as a full actuator or as a full motor.

This has the advantageous effect that not only the second space is protected from fluids, dirt and dust, but also that no dirt, dust or even any fluid in the outer space can get into the interior of the actuator. The interior of the actuator is protected by the housing of the actuator itself - a protection by the actuator completely enclosing housing of the actuator is no longer necessary. Thus, advantageously, the housing of the adjusting device can be made easier and with less material used.

In the context of this application, the term "full actuator" or "full motor" means an actuator or a motor having a closed and sealed, for example, even fluid-tight, actuator housing at least in that portion of the actuator housing, which may come into contact with the exterior of the actuator. So in the section that is located upstream of the seal to the outside. Preferably, the actuator housing of a full actuator or a full motor is so closed or sealed or even sealed fluid-tight, so that under normal operating conditions no fluid, in particular no liquid can penetrate into the interior of the full actuator or the full motor.

In a further development, it is provided that the actuator protrudes with a first end from the second space. In other words, the second space has been particularly greatly reduced. This has the advantageous effect that a particularly large amount of material of the housing of the actuating device can be saved. At the same time a particularly good heat dissipation of the actuator can be effected.

The actuator housing or actuator may e.g. have a length L along its longest axial extent. The length L of the actuator housing or actuator may be e.g. from the first end to the second end of the actuator. The length of the actuator can be dimensioned for example along the longitudinal axis of the actuator. In this case, the axis with the longest extent is to be understood by the longitudinal axis. In this case, the end of the second end may be fixed at the point at which a shaft or axis of the actuator passes out of the actuator housing. In other words, the shaft or axis of the actuator or even outwardly projecting electrical Kontaktierelemente (tabs, etc.) are not included in the length L.

For example, the actuator may protrude from the second space by at least 25%, preferably by at least 50%, and most preferably by at least 75% of its length L, thus protruding into the exterior space and thus being particularly well warmed.

In this case, the actuator may have a second end remote from the first end. The seal may, for example, be molded onto the outer wall of the actuator in a sealing section of the actuator adjacent the second end. The sealing section may, for example, extend along at most 75% of the length L of the actuator housing or the actuator, preferably along a maximum of 50% of the length L of the actuator housing or the actuator and most preferably along a maximum of 25% of the length L of the actuator or the actuator housing.

In a further development it is provided that the actuator is designed for adjusting the pivotally mounted actuator.

In a further development, it is provided that the actuator is a BLDC motor (BLDC = brushless DC motor, for example with electrical commutation). As a result, a particularly low-maintenance and wear-free operation of the actuating device can advantageously be ensured.

In a further development, it is provided that the actuator has a holding plate which, in particular at least in sections, projects beyond the outer contour of the actuator in a plane perpendicular to the longitudinal axis of the actuator, wherein the actuator can be fixed to the housing via the holding plate.

In this case, the holding plate can be fixed, for example, on the lower housing part, in a region adjacent to the cover, be screwed for example, be fixed by means of rivets, be glued or welded. This advantageously causes the actuator is securely mounted in the housing, although it is accessible from the outside. By the holding plate and its over the outer contour protruding contour is further advantageously ensured that during assembly of the actuator, the actuator can not slip through the opening of the second space. In addition, so the position of the seal on the outside of the actuator is precisely adjustable, as a result of the holding plate seals the seal in the axial direction always seals at a defined distance from the support plate on the inside of the second space. At this position of the inner wall of the second space, for example, geometric structures may be arranged which improve the sealing effect, for example a Thickening on the inside of the second room or a rubber coating, etc.

In a further development, it is provided that the housing is predominantly formed from a metal. For example, the housing may be formed of aluminum. As a result, the housing is advantageously particularly simple and inexpensive to produce. At the same time a good thermal and mechanical stability is ensured.

Alternatively, the housing may be formed predominantly of a plastic. As a result, the housing is advantageous in terms of weight particularly easy and also inexpensive to produce. When using plastic for the housing, an improvement of the cooling is ensured by the invention particularly advantageous.

In a further development, it is provided that the seal is designed as a silicone seal or as a silicone foam seal or as a polyurethane foam seal or as a polyurethane seal.

By using a silicone gasket or a silicone foam gasket advantageously a particularly soft, flexible and elastic seal is provided, which absorbs little or no water even in tropical humid conditions. Further advantageously, they also have a high resistance to many chemicals, e.g. Detergents, alcohols, lubricants, hydrochloric and nitric acid, brake fluids, coolants or ammonia gases.

By using a polyurethane foam seal or a polyurethane seal, a particularly soft elastic seal can advantageously be provided.

In a further development, it is provided that viewed along an axial direction of the actuator, a plurality of seals, for example two, three or more than three seals, between the inner wall of the second space and the outer wall of the actuator is arranged. In this case, this plurality of seals is molded onto the outer wall of the actuator.

For the purposes of this application, the term "plurality" is to be understood as meaning an English term "a aeral (of)". A plurality includes at least two elements. It should be distinguished from the term "the majority of"; indicating that it is more than 50% of the elements of a set of elements.

This advantageously improves the sealing effect and increases the reliability. Because a failure of one of the seals can be compensated by the presence of at least one further seal - thereby a redundancy effect is effected. In addition, a possible tolerance of the inner diameter of the second space or the outer diameter of the seal or the plurality of seals can be better absorbed in this way advantageous. For contaminants that could pass through the first seal can still be prevented from penetrating into the second space by the seals located behind. The more seals are arranged one behind the other, the more reliable and better the sealing effect.

In a further development, it is provided that the majority of the seals viewed in the axial direction is arranged one behind the other and at a distance from one another. In this way, an additional improved sealing effect is advantageously achieved. Because by the spacing of the plurality of seals results in addition to the sealing effect of the individual seal still a so-called labyrinth effect that increases the sealing effect.

According to a second aspect of the invention, an actuator for a throttle actuator is proposed.

The actuator for a throttle actuator includes an actuator housing. This actuator housing may e.g. surrounds an interior of the actuator fluid-tight, so that the actuator is designed as a full-actuator. The actuator has a first end viewed along an axial direction and a second end remote therefrom. At the second end, a - e.g. Fluid-tight against the interior of the actuator sealed shaft protrude from the actuator. At the actuator can be arranged at the second end of a drive wheel. It is provided that in a adjacent to the second end sealing portion of the actuator to the outer wall of the actuator, a seal is molded. The sealing portion may extend, for example, a maximum of 75% of the length L of the actuator housing or the actuator, preferably at most along 50% of the length L of the actuator housing and the actuator and most preferably at most along 25% of the length L of the actuator or the actuator housing.

This advantageously provides a modular actuator which can be used in a plurality of adjusting devices for a throttle valve. Further advantageously, the actuator is ready for installation in this way immediately after its manufacture and the seal is captively secured to the outer wall of the actuator. This can advantageously be dispensed with the manual attachment of a seal (eg an O-ring), whereby the assembly time decreases, the sealing effect becomes more reliable and the mounting error rate can also be reduced. Furthermore, this material can be saved in the manufacture of the housing of an actuating device, whereby the housing can be produced more cheaply and the housing is lighter in weight. Further advantageous is reliably prevented by the molded seal reliably and permanently mounted actuator that fluids, dirt and dust from the outside space can penetrate into the second room.

drawings

Other features and advantages of the present invention will become apparent to those skilled in the art from the following description of exemplary embodiments, which are not to be construed as limiting the invention with reference to the accompanying drawings.

Show it:

1 a perspective and partially cutaway view of a throttle valve according to the prior art;

2a a perspective view of an embodiment of an adjusting device according to the invention for a throttle valve;

2 B : a perspective view of the actuator off 2a ;

2c : A perspective sectional drawing of a detail in the area of the second room 2a ;

3a a perspective view of a housing lower part of a further embodiment of the invention;

3b : a perspective view of the actuator off 3a ,

1 shows a perspective and cutaway view of an adjusting device 1 for a throttle valve according to the prior art. The adjusting device 1 includes a housing 10 with a first room 11 and with a second room 12 , The housing 10 as such is made of a housing base 18 and a housing cover or lid 19 educated. The first room 11 For example, it can be connected to a fresh air line of an internal combustion engine. The first room 11 is from the second room 12 separated. In the first room 11 is an actuator 20 arranged, wherein the actuator 20 as a throttle body 22 is trained. The actuator 20 is about a rotation axis 24 pivotable.

The adjusting device 1 further includes a completely in the second room 12 arranged actuator 30 For example, a motor. The second room 12 is through the lower housing part 18 and the lid 19 against one outside the case 10 lying outside space 2 Completed, and can eg against the ingress of fluids, dirt and dust from the outside space 2 be sealed. That from the lid 19 opposite end of the second room 12 is thus against the outside space 2 completed, see the point with the reference "A".

The actuator 30 For example, has an approximately cylindrical body whose actuator housing 30a Partially having openings, for example for attaching magnets for the stator of an electric motor designed as an actuator 30 , The actuator 30 is with a first end 33 from the lid of the case 10 turned away and with one from the first end 33 remote second end 34 the lid 19 facing. The actuator 30 has a longitudinal axis, which is an axial direction 15 Are defined. The longitudinal axis can be considered as the axis along the longest extension of the actuator 30 to be viewed as.

The actuator 30 indicates at its second end 34 a shaft with a drive wheel attached thereto 35 on. The drive wheel is designed as a gear and meshes with a first gear of a transmission 40 , The gear 40 has on a transmission axis, the first gear with a large diameter and arranged on the same transmission axis second gear with a smaller diameter compared to the first gear. The second gear of the transmission 40 meshes with a sprocket, which at the axis of rotation 24 of the actuator 20 is attached. In this way can from the actuator 30 over the transmission 40 a torque on the axis of rotation 24 of the actuator 20 be transmitted to such a pivoting of the throttle body 22 trained actuator 20 to effect.

In the following figures are elements that look like those 1 same or which cause the same functions, represented by the same reference numerals.

2a shows a perspective view of an embodiment of an adjusting device according to the invention 1 for a throttle valve, in which case only the lower housing part 18 is shown. The complete case 10 can also have a lid, not shown here 19 include that on the housing base 18 as in 1 can be attached.

In contrast to the adjusting device 1 out 1 is the actuator 30 from the outside space 2 accessible. Im here shown Embodiment is the actuator 30 only partially in the second room 12 arranged. At the first end 33 of the actuator 30 . 31 protrudes a large part of the actuator 30 . 31 and an actuator housing 30a . 31a over the second room 12 out into the outdoor space 2 , In this way, the actuator can 30 . 31 to be cooled particularly well.

The actuator 30 . 31 may be, for example, an electric motor. The actuator 30 can also be used as a BLDC motor, for example 31 be educated. The actuator housing 30a . 31a surrounds an interior of the actuator 30 . 31 , Not by in the outside space 2 Existing fluids (liquids or gases) or being affected by dirt or dust is the actuator 30 designed as a full motor. The term full motor is understood to mean that the actuator housing 30a . 31a closed is. It is thus sealed fluid-tight against external influences. For the embodiment of the invention, although it is only necessary that that part of the actuator 30 . 31 or the actuator housing 30a . 31a which is from the housing 10 or from the second room 12 of the housing 10 in the outside space 2 protrudes, encapsulated or fluid-tight closed. The actuator 30 . 31 However, it can be designed such that the implementation of the shaft with the drive wheel arranged thereon 35 fluid-tight against the interior of the actuator 30 . 31 is sealed.

At the side facing away from the lid (not shown here) of the second room 12 , that is to say at the point with the reference symbol "A", is in contrast to the embodiment according to the prior art 1 the lower housing part 18 only shortened trained. This allows for the same length and thus (torque) power of the actuator 30 . 31 a considerable amount of material of the housing 10 or of the lower housing part 18 be saved. The housing 10 or the lower housing part 18 For example, they may be predominantly formed of a metal, for example aluminum or iron or steel or titanium or an alloy of these metals. Alternatively, the housing 10 or the lower housing part 18 be formed for the most part of a plastic. Without the second room 12 arranged actuator 30 . 31 has the lower housing part 18 at this point an opening.

To allow fluids, debris or dust to pass through this opening into the interior of the second room 12 to prevent is between the outer wall of the actuator 30 . 31 and the inner wall of the second room 12 a seal 50 arranged in 2 can not be seen. This seal 50 is on the outside wall 32 of the actuator drive 30 . 31 molded. It seals the interior of the second room 12 against ingress of fluids, dirt or dust through the opening or through a gap 14 between the inner wall of the second room 12 and the outer wall of the actuator 30 . 31 from.

The seal 50 is in one at the second end 34 adjacent, here dashed lines, sealing section 34a of the actuator 30 . 31 to the outside wall 32 of the actuator 30 . 31 molded. In this case, the sealing section extends 34a for example, maximum along 75% of the length L of the actuator housing 30a . 31a , In the illustrated figure, that is the extent of the sealing portion 34a about 20% to 30% of the length L.

2 B shows the actuator 30 for example as an electric motor or as a BLDC motor 31 is trained. However, an embodiment as a conventional electric motor with brushes is conceivable. The characteristic for a full motor closed outer wall 32 of the actuator 30 . 31 is easy to recognize. Adjacent to the first end 33 closes in the axial direction 15 looks at a cooling area 39 or a cooling section 39 at. The extension of this heat dissipation area 39 or Entwärmungs section 39 For example, it may be at least 25%, preferably at least 50% and most preferably at least 75% of the length of the actuator 30 . 31 in the axial direction 15 be. The heat-dissipation area 39 or cooling section 39 is the area or section that is the exterior space 2 facing and is arranged on the outside space side. In other words, he is ahead of poetry 50 and behind the seal 50 located interior of the second room 12 arranged. The to the second end 34 bordering sealing section 34a is also drawn in and extends from the second end 34 until the seal 50 , The sealing section 34a extends in the drawing approximately along 20% to 30% of the length L of the actuator 30 . 31 ,

At its second end 34 indicates the actuator 30 . 31 in this embodiment, three electrical connections, via which the actuator 30 . 31 can be supplied for example with electricity or with a voltage. In the case of an electric motor or a BLDC motor 31 For example, three voltages offset by 120 ° each can be applied here. Furthermore, the actuator 30 . 31 at its second end 34 a holding plate 36 on, in a plane perpendicular to the longitudinal axis of the actuator 30 . 31 with two fastening straps over an outer contour of the actuator 30 . 31 protrudes. In the mounting tabs are still fixing openings, for example 37 arranged. When mounting in the housing base 18 can the actuator 30 . 31 thus from the lid 19 facing side of the housing base 18 in the second room 12 be plugged in. By the Fastening straps on the retaining plate 36 is the actuator 30 . 31 then in a defined (axial) position on the lower housing part 18 and can, for example, by a screw or attaching rivets through the fixing openings 37 firmly with the housing lower part 18 get connected. Of course it is also possible to use the actuator 30 . 31 by a welded connection or by sticking to the lower part of the housing 18 to fix.

2c shows the lower housing part 2a with inserted actuator 30 . 31 in perspective and partially sectioned view. It is good to see that the actuator 30 . 31 only in sections in the second room 12 is arranged and with a large part (the Entwärm-section 39 ) of its actuator housing 30a . 31a from the second room 12 protrudes and the outside space 2 is exposed. Fluids, dirt and dust can come from the outside 2 first by the between the outer wall 32 of the actuator 30 . 31 and the inner wall 13 of the second room 12 located gap 14 in the second room 12 penetration. It is good to see that the seal 50 , which viewed radially between the outer wall 32 of the actuator 30 . 31 and the inner wall 13 of the second room 12 is arranged, the interior of the second room 12 against the in the gap 14 potentially penetrating fluids, contaminants, or the penetrating dust.

The to the outside wall 32 of the actuator 30 . 31 molded seal 50 may be formed for example as a silicone seal or as a silicone foam seal. As a result, it is particularly resistant to aggressive media (eg salt water, brake fluid, cleaning agents, oils, etc.) and is also suitable for tropical conditions or damp conditions due to its flexibility and softness and low water absorption capacity. Alternatively, the seal 50 be designed as a polyurethane foam seal or as a polyurethane seal.

3a and 3b show a further embodiment of the invention. It is along the axial direction 15 of the second room 12 considers a plurality of seals 50 (In the illustrated embodiment: two seals 50a . 50b ) between the inner wall 13 of the second room 12 and the outer wall 32 of the actuator 30 . 31 arranged. This majority of the seals 50a . 50b is on the outside wall 32 of the actuator 30 . 31 or the actuator housing 30a . 31a molded. Because both seals 50a . 50b to the outside wall 32 of the actuator 30 . 31 are molded, both are seals 50a . 50b captive on the actuator 30 . 31 established. To increase the sealing effect not only by the redundancy due to the arrangement of several seals in a row, but also to improve due to a labyrinth effect, the two seals 50a . 50b in the axial direction 15 considered consecutively arranged and spaced from each other. The distance between the two seals 50a . 50b is here represented by the reference numeral "d". The width of a single seal 50a . 50b , ie the length of the extension of the seal in the axial direction 15 , is shown by the reference character "b". The distance d may be between 3/10 of the width b and twice the width b of the seals for an optimum sealing effect (0.3 × b <= d <= 2 × b), preferably between 0.5 × b and 1 , 5 × b.

Basically, the use of more than two seals 50a . 50b conceivable, for example, three seals, four seals or even more than four seals.

The adjusting device 1 for a throttle valve or the actuator 30 . 31 for an actuating device 1 for a throttle valve can be used for example for internal combustion engines, for example in motor vehicles, trucks, ships or generally in internal combustion engines.

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 102008055127 A1 [0004]

Claims (10)

A throttle valve actuator comprising: a housing ( 10 ) with a first room ( 11 ) and with a second room ( 12 ), one in the first room ( 11 ) arranged actuator ( 20 . 22 ), at least in sections in the second space ( 12 ) arranged actuator ( 30 . 31 ), characterized in that the actuator ( 30 . 31 ) from an outdoor space ( 2 ) outside the housing ( 10 ) is accessible, wherein between the inner wall ( 13 ) of the second room ( 12 ) and the outer wall ( 32 ) of the actuator ( 30 . 31 ) a seal ( 50 . 50a . 50b ) is arranged, the second space ( 12 ) against the outside space ( 2 ) seals, with the seal ( 50 ) to the outer wall ( 32 ) of the actuator ( 30 . 31 ) is injected. Adjusting device according to claim 1, wherein the actuator ( 30 . 31 ) a fluid-tight closed actuator housing ( 30a . 31a ), wherein the outer wall ( 32 ) an outer wall of the actuator housing ( 30a . 31a ). Actuating device according to claim 1 or 2, wherein the actuator ( 30 . 31 ) with a first end ( 33 ) from the second room ( 12 protrudes). Actuating device according to claim 1 to 3, wherein the actuator ( 30 . 31 ) for adjusting the pivotally mounted actuator ( 20 ) and / or wherein the actuator is a BLDC motor ( 31 ). Actuating device according to one of the preceding claims, wherein the actuator ( 30 . 31 ) a holding plate ( 36 ), which in particular at least in sections in a plane perpendicular to the longitudinal axis ( 35 ) of the actuator ( 30 . 31 ) via an outer contour of the actuator ( 30 . 31 ) protrudes, wherein the actuator ( 30 . 31 ) over the retaining plate ( 36 ) on the housing ( 10 ) is fixable. Actuating device according to one of the preceding claims, wherein the housing ( 10 ) is formed predominantly of a metal, in particular aluminum, or wherein the housing ( 10 ) is formed predominantly of a plastic. Actuating device according to one of the preceding claims, wherein the seal ( 50 ) is designed as a silicone seal or as a silicone foam seal or polyurethane foam seal or as a polyurethane seal. Actuating device according to one of the preceding claims, wherein along an axial direction ( 15 ) of the actuator ( 30 . 31 ) considers a plurality of seals ( 50 . 50a . 50b ), in particular two, three or more than three seals ( 50 . 50a . 50b ), between the inner wall ( 13 ) of the second room ( 12 ) and the outer wall ( 32 ) of the actuator ( 30 . 31 ), this plurality of seals ( 50 . 50a . 50b ) to the outer wall ( 32 ) of the actuator ( 30 . 31 ) is injected. Actuator according to claim 8, wherein the plurality of seals ( 50 . 50a . 50b ) viewed in the axial direction one behind the other and spaced from each other. Actuator for a throttle actuator, comprising: an actuator housing ( 30a . 31a ), which in particular fluid-tight an interior of the actuator ( 30 . 31 ), wherein the actuator ( 30 . 31 ) along an axial direction ( 15 ) considers a first end ( 33 ) and a second end facing away from it ( 34 ), wherein at the second end ( 34 ) a drive wheel ( 35 ) is arranged, characterized in that in one to the second end ( 34 ) adjacent sealing section ( 34a ) of the actuator ( 30 . 31 ) to the outer wall ( 32 ) of the actuator ( 30 . 31 ) a seal ( 50 . 50a . 50b ) is sprayed, wherein the sealing section ( 34a ), in particular a maximum of 75% of the length L of the actuator housing ( 30a . 31a ).

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