CN114056056A

CN114056056A - Exhaust device

Info

Publication number: CN114056056A
Application number: CN202110864484.4A
Authority: CN
Inventors: G·利奥波尔德
Original assignee: Fischer Automotive Systems GmbH and Co KG
Current assignee: Fischer Automotive Systems GmbH and Co KG
Priority date: 2020-07-29
Filing date: 2021-07-29
Publication date: 2022-02-18
Also published as: DE102020120057A1

Abstract

The invention relates to an exhaust device (1) for the passenger compartment of a motor vehicle, having a knob (14) for pivoting flaps (3, 4) for deflecting the air flow through the exhaust device (1). The rotary knob (14) is mounted so as to be pivotable about two pivot axes (21, 22) which intersect perpendicularly with one another by means of a cardan suspension (18). A toothed bar drive (34) decouples the pivoting movement of the rotary knob (14) about the two pivot axes (21, 22) in such a way that, when the rotary knob (14) is pivoted about one of the two pivot axes (21, 22), only the lamellae (3, 4) associated with the respective pivot axis (21, 22) are pivoted, the teeth of the toothed bar drive extending in a circular arc concentrically about one of the two pivot axes (22).

Description

Exhaust device

Technical Field

The invention relates to an exhaust device having the features of the preamble of claim 1.

Background

Exhaust devices are known, which are used, for example, in motor vehicles for supplying air into the passenger compartment. Typically, the exhaust system has a tubular housing or an air duct, for example having a rectangular tube cross section, which is arranged recessed, for example, in the dashboard or center console of a motor vehicle and through which the air flows into the passenger compartment. In order to be able to divert the air flow from the air outlet sideways to the left and to the right and upwards and downwards (that is to say generally two-dimensionally), known air outlets have, for example, pivotable lamellae as air-diverting elements. Typically, two sets of mutually parallel and mutually pivotable lamellae are arranged in succession, generally next to the air escape opening in the flow direction through the exhaust, wherein the two sets of lamellae cross one another. Also known are mutually crossing, mutually rigid, for example one-piece lamellae which can be pivoted or moved in general terms in two dimensions.

International patent application WO 98/29272 a1 discloses such a venting device, in which a so-called cursor can be displaced longitudinally on the first flap and can be pivoted together with the first flap. The cursor has, on the rear side, a toothed bar which engages with a toothed segment which is rigidly connected to a second foil which is arranged in front of the first foil in the flow direction through the air outlet and perpendicularly crosses the first foil. A sector gear is a spur gear, that is to say a gear having teeth in the circumferential direction, wherein the teeth extend only over a limited circumferential section. The sector gear can be said to consist of a sector of spur gears.

Disclosure of Invention

The object of the present invention is to provide an exhaust device of the type mentioned above, the air-deflecting element of which can be moved by means of a manipulator which can be pivoted about two pivot axes, wherein a movement of the manipulator about a first pivot axis should move only the first air-deflecting element and a movement of the manipulator about a second pivot axis should move only the second air-deflecting element, even if the pivot axis of the manipulator is not parallel to the pivot axis and/or the direction of movement of the air-deflecting element. The exhaust device can have a plurality of first air deflection elements which move together and/or a plurality of second air deflection elements which move together. The air outlet device can also have an air deflecting element which can be moved in two dimensions, wherein the actuator moves the air deflecting element in a first dimension when pivoting about its first pivot axis and moves the air deflecting element in a second dimension when pivoting about its second pivot axis. When the manipulator is pivoted about one of its pivot axes, only the air-deflecting element assigned to this pivoting movement should be moved and not the air-deflecting element assigned to the pivoting movement of the manipulator about its other pivot axis, even if, as mentioned, the pivot axis of the manipulator is not parallel to the pivot axis and/or the direction of movement of the air-deflecting element.

According to the invention, this object is achieved by the features of claim 1. The air outlet device according to the invention has two air deflecting elements or an air deflecting element which can be moved two-dimensionally or in two directions and which can be moved in different directions in order to be able to deflect the air flow through the air outlet device in different directions. The invention does not exclude other air-deflecting elements. For example, the air deflection element is a pivotable, strip-shaped sheet.

In addition, the exhaust device according to the invention has an operating mechanism which moves the air-deflecting element in both directions. The operating mechanism has an actuator which is pivotable about a first pivot axis and about a second pivot axis, wherein the two pivot axes extend preferably at an angle, in particular at right angles, to one another. The manipulator is an operating element, such as an operating button or an operating wheel, which can be grasped by the hand or by the fingers of the hand.

In addition, the operating mechanism has a toothed bar drive having a toothed segment and a toothed bar, which are engaged with one another. The toothed bar transmission can be driven by means of a manipulator, i.e. the toothed segment can be rotated or pivoted by means of the manipulator, or the toothed bar can be displaced by means of the manipulator. No distinction is made here between rotation and pivoting, both of which are rotations about a rotational or pivot axis. The toothed bar runs tangentially to the pitch circle of the toothed sector and can be displaced in this direction, so that the teeth of the toothed sector and of the toothed bar, which can be straight or curved, remain engaged when the toothed sector rotates or pivots and the toothed bar is displaced. In particular, the sector gear is rotatable about a first pivot axis.

According to the invention, the teeth of the sector gear and/or the teeth of the toothed bar extend in their longitudinal direction in a circular arc concentrically about the second pivot axis of the manipulator, so that the teeth of the sector gear and of the toothed bar remain in mesh even when the manipulator pivots about its second pivot axis. The longitudinal direction of the teeth of the toothed rack extends transversely to the longitudinal direction of the toothed rack, or the displacement direction, and the longitudinal direction of the teeth of the toothed segment extends parallel to the axis of the toothed segment. The teeth of the sector gear and the teeth of the toothed bar extend so far in their longitudinal direction that they do not (completely) disengage when the manipulator is pivoted.

For example, the pivoting of the actuator about its second pivot axis pivots the toothed segment about a pivot axis which is perpendicular to its axis and parallel or tangential to the toothed rod, wherein the toothed segment does not disengage from the toothed rod due to the circular arc shape of the teeth of the toothed segment and/or of the toothed rod.

In order to move the air deflecting element, one embodiment of the invention provides that a first of the two air deflecting elements is connected in an articulated manner to the toothed bar and a second of the two air deflecting elements is connected in an articulated manner to the actuator or the toothed segment via a lever mechanism. In a corresponding embodiment of the invention, for the air deflecting element that can be moved in two dimensions, it is proposed that this air deflecting element be connected in an articulated manner to the toothed bar for movement in a first dimension and, via a lever mechanism, to the actuator or the toothed segment for movement in a second dimension. The term "dimension" is to be understood here to mean, in particular, a pivot axis or a rotational axis about which the air-deflecting element or, in general, any component is pivoted or rotated, or a direction of movement in which the air-deflecting element is moved. Pivoting of the actuator about the second pivot axis rotates the toothed segment about its axis, so that the toothed segment displaces the toothed rod and moves the air-deflecting element, which is connected in an articulated manner therewith, by means of the toothed rod. Pivoting of the manipulator about the second pivot axis pivots the sector gear about a pivot axis which extends at an angle relative to the axis of the sector gear, in particular at right angles to the axis of the sector gear. This pivoting movement of the actuator or of the toothed segment, i.e. not the rotation of the toothed segment about its axis, during pivoting of the actuator about the second pivot axis is transmitted to the second air-deflecting element by means of a lever mechanism, wherein the movement amplitude can be increased or decreased and/or the pivoting can be converted into a displacement.

In order to be able to control the air quantity flowing through the exhaust system, in particular to be able to throttle the air flow through the exhaust system and/or to block the exhaust system, one embodiment of the invention provides an air quantity control element. For example, the air volume control element can be a pivotable (throttle and/or latching) flap or a (throttle and/or latching) slide valve. In one embodiment of the invention, the air quantity control element is driven by a rotation of the manipulator about a rotation axis which extends at an angle, in particular at right angles, to the pivot axis of the manipulator. The rotation of the actuator is transmitted to the air quantity control element, for example, by means of a gear transmission, in particular a bevel gear transmission. The exhaust device can have a plurality of air quantity control elements.

One development of the invention provides a cardan shaft for driving the air quantity control element, which cardan shaft is connected in a rotationally fixed manner to the actuator and transmits the rotation of the actuator to the air quantity control element. In order to compensate for possible angular and/or radial deviations, the joint shafts are preferably connected to the manipulator in a pivotable manner.

In a preferred embodiment of the invention, the two pivot axes and the rotational axes of the manipulator intersect each other perpendicularly and/or in an intersection point. The embodiment of the invention provides a ball and socket joint or a universal suspension for the pivot and pivot bearing of the manipulator.

Drawings

The features and feature combinations mentioned above in the description, embodiments and embodiments of the invention and the features and feature combinations mentioned below in the description of the figures and/or depicted in the figures can be used not only in the respectively stated or depicted combination but also in any other combination in principle or alone. Embodiments of the invention may not have all the features of a dependent claim. The individual features of a claim can also be replaced by other disclosed features or combinations of features.

The invention will be explained in more detail below on the basis of embodiments shown in the drawings. The figures show:

FIG. 1 is a simplified and schematic side view of an exhaust apparatus according to the present disclosure;

fig. 2 a universal joint coupling of the exhaust device in fig. 1.

Detailed Description

The exhaust gas system 1 according to the invention shown in fig. 1 has a rectangular tubular housing 2, in the drawing, in which strip-shaped lamellae 3, 4 are arranged so as to be pivotable about their longitudinal axes transversely to the housing 2. The longitudinal axes of the lamellae 3, 4, and thus the pivot axes, extend transversely to the housing 2. The exhaust device 1 has two sets of lamellae 3, 4, which are arranged one behind the other in the flow direction through the housing 2. Each group of lamellae 3, 4 is arranged parallel to one another side by side in the housing 2, and the two groups of lamellae 3, 4 arranged one behind the other in the flow direction through the housing 2 cross one another — in the present embodiment at right angles. Each set of parallel lamellae 3, 4 is hingedly interconnected by means of coupling rods 5, 6, so that each set of parallel lamellae pivots in common parallel. By pivoting the lamellae 3, 4, the air flow through the air outlet device 1 is deflected obliquely sideways and upwards and downwards, that is to say two-dimensionally, in both directions. The lamellae 3, 4 can therefore also be understood as air deflection elements 7, 8 in general.

In front of the lamellae 3, 4 in the flow direction through the exhaust device 1, two throttle flaps 9, 10 are mounted so as to be pivotable about a pivot axis extending transversely to the housing 2 of the exhaust device 1. The throttle flaps 9, 10 can be pivoted or moved in general from an open position, illustrated in solid lines in fig. 1, in which they lie parallel to one another on both sides of the longitudinal center plane of the housing 2, into a V-shaped closed position, illustrated in dashed lines in fig. 1, in which the throttle flaps 9, 10 are obliquely spaced apart from one another and block the housing 2 against the passage of air. The throttle flaps 9, 10 can be pivoted or moved steplessly into each intermediate position in which they close off the housing 2 to a greater or lesser extent and in this case correspondingly throttle the air flow. Throttle flaps 9, 10 can also be understood as air quantity control elements 11, 12 in general.

In order to pivot or move the lamellae 3, 4 forming the air deflecting elements 7, 8 and the throttle flaps 9, 10 forming the air quantity control elements 11, 12 in general terms, the exhaust system 1 according to the invention has an operating mechanism 13 which has a rotary knob 14 for actuation by hand or by means of the fingers of a hand, which rotary knob is referred to in the following as a control device 15.

The manipulator 15 is arranged rigidly on a shaft 16 of a bearing inner body 17 which is supported pivotably about two

pivot axes

21, 22 by means of a cardan suspension 18 having an inner ring 19 and an outer ring 20. In the present exemplary embodiment, the pivot axes 21, 22 intersect perpendicularly with respect to one another, wherein it is not mandatory for the present invention that the pivot axes 21, 22 intersect and extend at right angles with respect to one another. In fig. 1, the journal bearing of the bearing inner body 17 in the inner ring 19 and the journal bearing of the inner ring 19 in the outer ring 20 are denoted by the

reference numerals

21, 22 for the two pivot axes. The manipulator 15 is supported by means of a cardan suspension 18 in a pivotable manner about two

pivot axes

21, 22. The outer ring 20 is drawn in a partially through manner to allow a better view of the inner ring 19.

In addition, the manipulator 15 can be rotated about a rotational axis which in the present exemplary embodiment likewise intersects the two

pivot axes

21, 22, which is not mandatory for the present invention. For this purpose, the bearing inner body 17 is mounted in an inner ring 19 of the cardan suspension 18 so as to be rotatable about its axis as axis of rotation, which is at the same time the axis of the shaft 16 and of the rotary knob 14 or of the actuator 15. There is no fundamental difference between pivoting and rotation: both are rotational movements about a pivot axis or about a rotational axis with limited or unlimited pivoting or rotational angles.

The bearing inner body 17 has an axial blind bore 23 with two longitudinal grooves 24 in an axial plane (fig. 2). The ball 25 of the joint shaft 26 is located in the blind hole 23, from which two journals 27 protrude coaxially and radially, which engage in the two longitudinal grooves 24, whereby the joint shaft 26 is rotationally fixed, axially movable and pivotable together with the bearing inner body 17 and via this together with the manipulator 15.

The universal joint shaft 26 runs between the lamellae 3, 4 forming the air deflection elements 7, 8 as far as the throttle flaps 9, 10 forming the air quantity control elements 11, 12, where the universal joint shaft 26 has a cone wheel 28 of a cone wheel gear 29. The mating cone wheels 30 are located in front of and behind the drawing plane in fig. 1 and are rigidly connected to the air quantity control elements 11, 12. The mating cone wheel 30 engages at the opposite point with the cone wheel 28 of the universal joint shaft 26, so that the two throttle flaps 9, 10 pivot in opposite directions when the articulated shaft 26 rotates. In this way, by rotation of manipulator 15 about its axis of rotation coaxial with shank 16, the flow of air through exhaust device 1 can be throttled and shut off. A cardan shaft 26 with a ball head 25 which is rotationally fixed in the bearing inner body 17 and a cone gear 30 are part of the operating mechanism 13 for pivoting the air deflection elements 7, 8 and the air quantity control elements 11, 12.

Coaxially with the first of the two pivot axes 21 of the cardan suspension 18 of the manipulator 15, the sector gear 31 is arranged rigidly at the inner ring 19 of the cardan suspension 18 and at a distance from the cardan shaft 26. The toothed segment 31 is part of a spur gear or spur gear, the toothing of which extends over a limited circumferential section. The pivot axis 21 of the inner ring 19 is referred to herein as the first pivot axis 21.

The toothed segment 31 meshes with a toothed rod 32, which is guided in the housing 2 of the exhaust system 1 by means of a schematically illustrated slip guide 33 so as to be tangentially displaceable relative to an imaginary circle concentric with the first pivot axis 21, i.e. relative to a pitch circle of the toothed segment 31. In the present exemplary embodiment, the toothed bar 32 can be displaced laterally in the housing 2. The sector gear 31 and the toothed bar 32 form a toothed bar transmission 34, which is part of the operating mechanism 13 of the air outlet device 1 according to the invention for pivoting the air deflection elements 7, 8 and the air quantity control elements 11, 12.

The toothed bar 32 has a fork 38 which acts in an articulated manner on the first air-deflecting element 7 at a radial distance from its longitudinal axis, so that a displacement of the toothed bar 32 pivots this first air-deflecting element 7 and, via the coupling rod 5, the other first air-deflecting element 7. The toothed bar 32 is displaced in that the manipulator 15 pivots about the first pivot axis 21, wherein it pivots the inner ring 19 and a toothed segment 31, which is rigidly arranged at the inner ring 9, engages with the toothed bar 32 and displaces it tangentially relative to the toothed segment 31. The air-diverting element 7 closer to the articulated suspension unit 18 and the manipulator 15 is referred to herein as the first air-diverting element 7. In the present exemplary embodiment, the first air deflection element 7 is located behind a further air deflection element 8, which is referred to here as the second air deflection element 8, in the flow direction through the exhaust device 1.

The teeth of the toothed bar 32 run in their longitudinal direction in a circular arc concentrically about the second pivot axis 22, so that the teeth of the toothed bar 32 and of the toothed sector 31 remain in mesh when the toothed sector 31 pivots about the second pivot axis 22. The longitudinal direction of the teeth of the toothed rack 32 extends transversely to the longitudinal direction of the toothed rack 32 or transversely to the displacement direction of the toothed rack 32.

In order to pivot the second air deflecting element 8, the operating mechanism 13 of the exhaust device 1 according to the invention has a connecting rod 35, one end of which is connected in an articulated manner to the outer ring 20 of the cardan suspension 18 at a distance from the second pivot axis 22, and the other end of which is connected in an articulated manner to a radial rocker 36 which projects transversely from one of the second air deflecting elements 8. The connecting rod 35 and the radial rocker 36 form a lever actuator 37 or are part of such a lever actuator 37. In the region of the toothed bar drive 34, the connecting rod 35 is continuous in the drawing. If the manipulator 15 is pivoted about the second pivot axis 22, it pivots the outer ring 20 of the cardan suspension 18 about the second pivot axis 22 via the shank 16, the bearing inner body 17 and the inner ring 19. Upon pivoting about the second pivot axis 22, the outer ring 20 moves a link 35 which, via a radial rocker 36, pivots the one second air-deflecting member 8. The one second air-deflecting element 8 pivots the other second air-deflecting element 8 via the coupling rod 6.

The toothed bar transmission 34 of the operating mechanism 13 and the toothed bar 32, which is tangentially displaceable relative to the pitch circle of the toothed segment 31, with teeth extending in a circular arc concentrically about the second pivot axis 22 of the manipulator 15, decouple the pivoting movement of the manipulator 15: if the actuator 15 is pivoted only about the first pivot axis 21, it pivots only the first air-steering element 7 via the toothed-bar transmission 34, and if the actuator is pivoted only about the second pivot axis 22, it pivots only the second air-steering element 8 via the outer ring 20 of the cardan suspension 18 and the connecting rod 35. This also applies to the following cases: in contrast to the present exemplary embodiment, the pivot axes of the lamellae 3, 4 forming the air deflection elements 7, 8 do not extend parallel to the pivot axes 21, 22 of the cardan suspension 18 or of the manipulator 15.

List of reference numerals

1 exhaust device

2 casing

3. 4 sheet

5. 6 connecting rod

7. 8 air-turning element

9. 10 throttle valve

11. 12 air quantity control element

13 operating mechanism

14 knob

15 manipulator

16 handle

17 bearing inner body

18-cardan type suspension device

19 inner ring

20 outer ring

21 first pivot axis

22 second pivot axis

23 Blind hole

24 longitudinal grooves

25 ball head

26 universal joint shaft

27 axle journal

28 conical wheel

29 conical wheel transmission device

30 matching cone wheel

31 sector gear

32 rack bar

33 slip guide device

34 rack bar transmission device

35 connecting rod

36 radial rocker

37 lever transmission device

38 fork-shaped piece.

Claims

1. Exhaust device having two movable air deflecting elements (7, 8) or one two-dimensionally movable air deflecting element for deflecting an air outflow from the exhaust device (1), and having an actuating mechanism (13) for moving the air deflecting elements (7, 8), which actuating mechanism has a manipulator (15) which can be pivoted by hand about a first pivot axis (21) and about a second pivot axis (22) and a toothed bar transmission (34), which can be driven by means of the manipulator (15) and which has a toothed sector (31) and a toothed bar (32) which mesh with one another, characterized in that the toothed bar (32) extends tangentially with respect to a pitch circle of the toothed sector (31) and can be displaced in this direction, the toothed segment (31) is concentric to the first pivot axis (21) of the actuator (15), and the teeth of the toothed segment (31) and/or of the toothed bar (32) extend in their longitudinal direction in a circular arc concentrically about the second pivot axis (22) of the actuator (15).

2. Exhaust device according to claim 1, characterized in that a first air-diverting element (7) is connected in an articulated manner with the toothed bar (32) and a second air-diverting element (8) is connected in an articulated manner with the manipulator (15) or the toothed sector (31) by means of a lever transmission (37), or the air-diverting element is connected in an articulated manner with the toothed bar (32) for movement in a first dimension and is connected with the manipulator (15) or the toothed sector (31) by means of a lever transmission (37) for movement in a second dimension.

3. An exhaust device according to claim 1 or 2, characterized in that the manipulator (15) is rotatable about a rotational axis for opening and closing the air quantity control element (12, 13).

4. An exhaust device according to claim 3, characterized in that the operating mechanism (13) has a cardan shaft (26) for opening and closing the air quantity control elements (11, 12), which cardan shaft is connected in a rotationally fixed and pivotable manner with the manipulator (15).

5. The exhaust device according to one or more of the preceding claims, characterized in that the pivot axis (21, 22) and the axis of rotation of the manipulator (15) extend perpendicularly to each other.

6. The exhaust device according to one or more of the preceding claims, characterized in that the manipulator (15) has a ball-and-socket joint or cardan suspension (18), the intersection of the axis of rotation of the manipulator (15) and the pivot axis (21, 22) of the manipulator (15) intersecting.