CN210116359U

CN210116359U - Ventilation device for vehicle cab and garnish for vehicle cab

Info

Publication number: CN210116359U
Application number: CN201920809574.1U
Authority: CN
Inventors: R·塔瓦雷斯; T·T·比
Original assignee: Faurecia Interieur Industrie SAS
Current assignee: Faurecia Interieur Industrie SAS
Priority date: 2018-05-31
Filing date: 2019-05-31
Publication date: 2020-02-28
Anticipated expiration: 2029-05-31
Also published as: FR3081778A1; FR3081778B1

Abstract

The utility model relates to a ventilation unit of vehicle cab, it has: -a casing (2), -a blade (8) hinged to the casing (2) about a rotation axis (R), -a control member (16) controlling the rotation of the blade (8), and-transmission means for transmitting the movement of the control member (16) to the blade (8) and having an operating member (30) connected to the control member (16). The transmission device has a transmission shaft (18) which is fixed to the blade (8) at a transmission point (20) and is mounted in a rotationally movable manner in at least one guide (22), and an operating element (30) is hinged at an operating point (24) to the transmission shaft (18) extending between the transmission point (20) and the guide (22).

Description

Ventilation device for vehicle cab and garnish for vehicle cab

Technical Field

The utility model relates to a ventilation unit of vehicle cab, it has:

a vent having a housing with an inlet and an outlet,

at least one blade extending in the casing in the vicinity of the inlet, the blade being hinged to the casing about an axis of rotation,

-a control member controlling the rotation of the blade, said control member extending in the vicinity of the outlet, the manipulation of the control member driving the rotation of the blade about its axis of rotation, and

-transmission means for transmitting the movement of the control member to the blade, said transmission means having at least one operating member connected to the control member and intended to drive the blade in rotation when the control member is operated.

The utility model discloses still relate to the gadget of vehicle, it has this kind of ventilation unit.

Background

It is known to provide one or more vanes in an air guide device which close a vent and interrupt the flow of air exiting the outlet of the vent. The vanes are arranged upstream of the outlet, the movement of which is controlled by a control member arranged on the front face of the vent, i.e. in the vicinity of the outlet.

In order to convert the user's manipulation of the control member into movement of the blade, the control member is connected to the blade by a manipulation member which moves the blade when the control member is moved by the user. For this purpose, the actuating element is articulated at one of its ends on the axis of rotation of the blade.

The operating member is directly engaged with the end of the blade, and a connection twisting phenomenon may be caused between the operating member and the end of the blade due to a great force applied to the end of the blade by the operating member when the movement is transmitted between the operating member and the blade. Thus, the ventilation device may fail or require a significant amount of force to move the vanes to control the flow of air exiting the ventilation device.

One of the objects of the present invention is to remedy this drawback and to provide a ventilation device which allows to control the closing of the ventilation opening by the blades without requiring a very high and reliable effort.

SUMMERY OF THE UTILITY MODEL

To this end, the invention relates to a ventilation device of the aforementioned type, wherein the transmission device further has a transmission shaft fixed to the blades at the transmission point and rotating integrally with said blades, the transmission shaft being rotatably movably mounted in at least one guide spaced from the transmission point, the operating member being hinged at the operating point to said transmission shaft extending between the transmission point and the guide, the movement of the operating member driving the transmission shaft and the blades in rotation about the rotation axis.

When the transmission shaft rotates the blades, the rotation axis of the blades is extended, so that the connection between the operating part and the blades is deviated, and the twisting phenomenon is avoided. Thus, the distribution of forces between the operating member and the blade is improved, and the control of the rotation of the blade requires less force and is less prone to failure.

Alone or according to any combination technically conceivable, according to other optional features of the ventilation device of the invention:

the drive shaft extends in the blade extension along the rotation axis;

the drive point is formed by one end of a drive shaft, the other end of which is mounted in the guide in the direction of the axis of rotation;

the maneuvering member is hinged to the transmission shaft about a hinge axis, which is separate from and substantially parallel to the rotation axis of the transmission shaft;

the operating member is movable in translation relative to the casing along an operating direction substantially perpendicular to the rotation axis, the movement of the operating member along the operating direction driving the blades in rotation about the rotation axis through the transmission shaft;

-the control member is rotationally movable about a control axis substantially perpendicular to the rotation axis and to the maneuvering direction, the control member being connected to the maneuvering member by a gear device arranged such that rotation of the control member about the control axis drives the maneuvering member in translation along the maneuvering direction;

the ventilation means also have at least one flap extending in the casing in the vicinity of the outlet, said flap being hinged to the casing about a rotation axis different from the rotation axis of the blades, the gear means being arranged to drive the flap in rotation on a first movement stroke of the control member and to drive the manoeuvring member in movement on a second movement stroke of the control member;

-the vanes have at least one air-guiding surface, the vanes being movable between at least one open position in which the air-guiding surface extends substantially parallel to the direction of circulation of air in the ventilation opening, and at least one closed position in which the air-guiding surface extends substantially perpendicular to said direction of circulation;

the ventilation device has at least a first blade and a second blade, each movable about an axis of rotation, a drive shaft integral with the first blade and arranged to drive the second blade in rotation upon the rotational movement of the drive shaft; and

the transmission shaft has a gear mechanism extending radially about its axis of rotation, said gear mechanism being in mesh with a complementary gear mechanism arranged on the other blade, such that rotation of the transmission shaft drives a corresponding rotation of the second blade.

The utility model discloses still relate to the gadget of vehicle, it has foretell ventilation unit, and the export of vent is led to the opening of gadget.

Drawings

Other features and advantages of the invention will become apparent from the following description, given by way of example and made with reference to the accompanying drawings, in which:

figure 1 is a schematic perspective view of a part of the ventilation device of the invention;

FIG. 2 is a schematic perspective view of an enlarged region of the ventilation device shown in FIG. 1; and

figure 3 is a schematic top view with a portion of the housing removed from the ventilation device shown in figure 1.

Detailed Description

Fig. 1 shows a ventilation device 1 for a vehicle cab, which is used in particular for trim parts which are fastened to the vehicle cab, such as trim parts of an instrument panel, a center console, a support plate, etc.

The ventilation device 1 has a ventilation opening with a housing 2 extending between an inlet 4 and an outlet 6. The inlet 4 is intended to be connected to a ventilation system of the vehicle, the outlet 6 opens, for example, to an opening of a trim, and the enclosure 2 directs air from the ventilation system from the inlet 4 to the outlet 6, from which outlet 6 the air diffuses into the vehicle cab. In other words, the housing 2 forms a conduit extending between the inlet 4 and the outlet 6. For this purpose, the housing 2 may have any suitable shape, in particular a tubular shape, for example a rectangular cross-section, a square cross-section or a circular cross-section. In the present specification, "upstream" and "downstream" are defined with respect to the direction of the air flow in the casing 2 from the inlet 4 to the outlet 6.

The ventilation device also has at least one vane 8 extending across the housing 2 in the vicinity of the inlet 4. By "transverse to the casing" is meant that the blades 8 extend in a main direction D substantially perpendicular to the axis a of the casing 2. The blades 8 have at least one air guiding surface 10 allowing to direct the direction of the air in the casing 2 depending on the orientation of the air guiding surface 10 with respect to the casing 2. The air guide surface 10 extends in at least one plane having a main direction D and a direction substantially perpendicular to the main direction. According to other embodiments, the air guide surface 10 is not only plane but has, for example, a curved portion or is entirely curved along the axis a of the casing 2 between its upstream end and its downstream end. The blade 8 has, for example, two air guide surfaces 10 formed by two end surfaces of the blade 8.

The blades 8 are mounted rotatably on the housing 2 about a rotational axis R extending substantially in the main direction D, so that the orientation of the guide surfaces 10 relative to the housing 2 is adjustable. To this end, the blade 8 is hinged by at least one end portion 12 thereof to the casing 2, along the main direction D, about the rotation axis R. The end portion 12 is formed, for example, by a male pin inserted in a hole of the casing 2, protruding outside the duct formed by the casing 2. According to the embodiment shown in the figures, the end portion 12 is formed by a guide wheel mounted on a support 14 extending on the wall of the casing 2. Advantageously, the vanes 8 are hinged to the casing 2 at each of their end portions 12. In this case, only one end portion 12 may take the shape of a runner and/or extend outside the duct formed by the casing, the other end portion 12 being formed by a simple protruding pin which is inserted in a hole in the casing 2.

The vanes 8 are movable between at least two positions, an open position in which the guide surfaces 10 extend substantially parallel to the direction of the air flow in the housing 2, i.e. substantially parallel to the axis a, and a closed position in which the guide surfaces 10 extend substantially perpendicular to the air flow, i.e. substantially perpendicular to the axis a. Thus, in the open position, the vanes 8 allow air to pass between the inlet and the outlet, while in the closed position they prevent such passage. According to one embodiment, the vanes 8 are dimensioned to fully close the housing 2 in the closed position, completely preventing air from flowing through the vanes 8 towards the outlet 6. According to another embodiment, the ventilation device 1 has two or more blades 8 which are movable in rotation about parallel axes of rotation relative to the casing 2 between an open position and a closed position. In the open position, the vanes 8 extend substantially parallel to each other and to the direction of the air flow. In the closed position, the vanes 8 extend substantially perpendicularly to the direction of the air flow, for example against each other, to close the housing 2 against the passage of air. According to the embodiment shown in the figures, the ventilation device 1 has two blades 8, to which the rest of the description refers, the operation of the ventilation device being substantially similar regardless of the number of blades 8.

The rotation of the vane 8 or one of the vanes 8 is controlled by a control member 16 (fig. 3) which extends in the vicinity of the outlet 6. The control member 16 extends, for example, in the front of the ventilation device or the trim adjacent to the outlet 6. Thus, control member 16 is easily manipulated by a user sitting in the cab of the vehicle. The control member 16 is formed, for example, by a knob, which is mounted rotatably movable relative to the casing 2 about a rotation axis Z substantially perpendicular to the direction of the air flow and to the main direction D of the blades 8. In other embodiments, the control member 16 may be formed by a movable button, for example a button movable in translation in a direction parallel to the axis a.

The control member 16 is connected to the blade 8 by transmission means, transmitting the movement of the control member 16 to the blade 8, transforming the movement of the control member 16 into a rotation of the blade 8 between the open position and the closed position.

The transmission means have at least one transmission shaft 18 rotatably connected to the blades 8 for rotation about a parallel axis coinciding with the rotation axis R of the blades 8. The term "rotationally coupled" means that the rotating drive blades 8 of the drive shaft 18 rotate at the same angle. According to the embodiment shown in the figures, the transmission shaft 18 extends along the blades 8 in the main direction D outside the duct formed by the casing 2, with its rotation axis coinciding with the rotation axis R of the blades 8. The drive shaft 18 is fixed to the end portion 12 of the blade 8 at a drive point 20, rotatably mounted in a guide 22 spaced from the drive point 20 in the direction of the axis of rotation of the drive shaft 18.

The drive point 20 is formed, for example, by one end of a drive shaft 18, which is fixed to the end portion 12 of the blade, for example, to a guide wheel mounted on the support 14. The fixation between the drive shaft 18 and the blade 8 is, for example, an axial fixation along the rotation axis R, i.e. the drive point 20 and the end portion 12 of the blade are adjacent in the direction of the rotation axis R, in which direction they extend with respect to each other. The drive shaft 18, or the end portion 12, is, for example, fitted over a pin which extends axially from the end portion 12 or the drive shaft 18.

The guide 22 is formed, for example, by an annular holder which is fixedly connected to an outer part of the housing 2, wherein the end of the drive shaft opposite the drive point 20 is rotatably movably received, as shown in fig. 1 and 2. Thus, the transmission shaft 18 is supported at both ends thereof. Obviously, additional guides may be used to ensure that the drive shaft is held securely. The portion of the drive shaft 18 that extends between the drive point 20 and the end received in the guide 22 is referred to as the main section of the shaft.

Obviously, the drive shaft 18 may not extend along the blades 8, but may be offset with respect to the blades 8, for example for reasons of volume. In this case, a transmission, such as a gear mechanism, extending between the drive shaft 18 and the blades 8 may be arranged such that rotation of the drive shaft drives the blades in a corresponding rotation.

Between the drive point 20 and the part of the drive shaft received by the guide 22, the drive shaft 20 has a control point 24. The operating point 24 is formed, for example, by a pin 26 extending along a hinge axis B substantially parallel to the rotation axis of the drive shaft 18, and by an arm 28 extending substantially radially from the main section of the drive shaft 18, i.e. substantially perpendicularly to the rotation axis of the drive shaft 18, as shown in fig. 3. Thus, the pin 26 extends generally parallel to the main section, being separated therefrom by an arm 28. In other embodiments, the steering point 24 may be formed by a bore extending along a hinge axis B substantially parallel to the axis of rotation of the drive shaft 18, formed at the free end of the arm 28. According to one embodiment, the operating point 24 extends approximately in the center of the main section, i.e. at half the distance between the operating point 20 and the guide 22.

The transmission also has an operating member 30 connected to the control member 16.

The actuating element 30 is hinged to the actuating point 24 of the transmission shaft 18 about a hinge axis B. The operating element 30 therefore has a hinge part 32 which is mounted rotatably about a hinge axis B on the pin 26 of the operating point 24 or, if necessary, is inserted in a hole formed in the arm 28. The maneuvering member 30 is mobile in translation with respect to the casing 2 along a maneuvering direction C substantially perpendicular to the rotation axis of the transmission shaft 18, i.e. along a direction substantially parallel to the axis a of the casing 2. The translational movement of the maneuvering member 30 in the maneuvering direction C thus drives the rotation of the transmission shaft 18 about its rotation axis, so that the rotation of the blades 8 about their rotation axis R is driven by means of the articulation between the maneuvering member 30 and the maneuvering point 24 and by means of the distance between the maneuvering point 24 and the main section of the transmission shaft 18. For example, translational movement of the operating member 30 in the downstream direction along the operating direction C drives the vanes 8 towards the closed position, and movement of the operating member 30 in the upstream direction drives the vanes 8 towards the open position.

In the case of a control member 16 formed by a push-button movable in the upstream-downstream direction, it is sufficient to have the operating member 30 movably connected to the control member 16, so that the control member 16 controls the movement of the blades 8.

In the case of a control member 16 formed by a knob, the operating member 30 is connected to the control member 16 by a gear means 32 for transforming the rotary movement of the control member 16 about the rotation axis Z into a translational movement of the operating member 30 in the operating direction C, as shown in fig. 3. The gear member 32 has a gear wheel 34, the gear wheel 34 being provided with toothed segments and rotating about an axis of rotation substantially parallel to the axis of rotation Z of the control member 16. The gear 34 is integral with a cam element 36, for example a ring groove, which is engaged with the operating member 30, for example by means of a guide wheel which is secured to the operating member 30 so as to be movable in the ring groove. The toothed section of the gear 34 also cooperates with a complementary toothed section 38 connected to the control member 16. Thus, rotation of the control member 16 drives rotation of the gear 34 via the toothed segment, thereby driving movement of the cam member 36. The cam member 36 is shaped such that this movement causes the operating member 30 to move translationally in the operating direction C.

Thus, the control member 16 can control the movement of the vanes 8 between their open and closed positions by means of the transmission. The transmission is arranged to extend the axis of rotation of the blades 8 through the transmission shaft 18, configuring an operating member of the transmission shaft 18 at a point where the risk of twisting is eliminated, operating without applying a great force to the control member 16. Therefore, the operation of the transmission is strong despite the large distance in the upstream-downstream direction between the control member 16 and the blade 8 controlled by the control member 16.

When the ventilation device has two blades, the control member 16 can control the rotation of one first blade 8 by means of the transmission as described previously. Advantageously, the rotation of the second blade 8 is driven by a transmission shaft 18, as shown in particular in fig. 2. For this purpose, the drive shaft 18 has a gear mechanism 40 which extends radially around the main section and meshes with a complementary gear mechanism 42 arranged on the second blade 8, so that rotation of the drive shaft 18 drives the second blade 8 in rotation. The gear mechanism 40 extends, for example, around the drive point 20 of the drive shaft 18, and the complementary gear mechanism 42 extends from the end portion 12 of the second blade 8. When more than two blades are provided, the same meshing transmission can be adopted among different blades.

According to one embodiment, as shown in particular in fig. 3, the ventilation device also has at least one fin 44 extending in the casing 2 in the vicinity of the outlet 6. The vanes 44 are hinged to the casing 2 about a rotation axis different from the rotation axis R of the blade 8, for example a rotation axis substantially parallel to the rotation axis Z of the control member 16. Such fins 44 are known to direct the air flow, changing its direction at the outlet of the ventilation device 1. To this end, the fins 44 have an air guide surface whose orientation with respect to the axis a of the casing 2 is adjustable by rotation of the fins 44. Advantageously, the rotation of the flap 44 is also controlled by the control member 16 through the gear means 32. Thus, the gear device 32 is arranged to drive the rotation of the wing 44 in a first movement stroke of the control member 16 and to drive the movement of the operating member 30 in a second movement stroke of the control member 16. In other words, rotating the control member 16 in a first range of rotation, the user controls the rotation of the vanes 44, rotating the control member 16 in another range of rotation, and the user controls the rotation of the blades 8. This function is obtained by controlling the shape of the cam element 36, so that the operating means 30 does not move when the control member 16 moves in its first movement stroke, so that the blade 8 does not rotate in this first stroke.

As is known, the ventilation device 1 has a plurality of fins 44 parallel to one another, which are connected in rotation to one another, so that the control member 16 can control the rotation of all the fins 44.

The ventilation device can thus control a plurality of functions using a single control member, while ensuring that the control works reliably and without great effort.

Claims

1. A ventilation device (1) for a vehicle cab, comprising:

-a vent having a housing (2) with an inlet (4) and an outlet (6),

-at least one blade (8) extending in the casing (2) in the vicinity of the inlet (4), said blade (8) being hinged to the casing (2) about a rotation axis (R),

-a control member (16) controlling the rotation of the blade (8), said control member (16) extending in the vicinity of the outlet (6), the manipulation of the control member (16) driving the blade (8) in rotation about its axis of rotation (R), and

-transmission means for transmitting the movement of the control member (16) to the blade (8), said transmission means having at least one operating member (30) connected to the control member (16) and intended to drive the blade (8) in rotation when the control member (16) is operated,

characterized in that the transmission device also has a transmission shaft (18) fixed to the blade (8) at a transmission point (20) and rotating integrally with said blade (8), the transmission shaft (18) being rotatably movably mounted in at least one guide (22) spaced from the transmission point (20), an operating member (30) being hinged at an operating point (24) to said transmission shaft (18) extending between the transmission point (20) and the guide (22), the movement of the operating member (30) driving the transmission shaft (18) and the blade (8) in rotation about a rotation axis (R).

2. A ventilation device according to claim 1, characterized in that the drive shaft (18) extends in the extension of the blade (8) along the axis of rotation.

3. A ventilation device according to claim 1 or 2, characterized in that the drive point (20) is formed by one end of a drive shaft (18), the other end of the drive shaft (18) in the direction of the axis of rotation (R) being mounted in a guide (22).

4. The ventilation device according to claim 1 or 2, characterized in that the operating member (30) is hinged to the transmission shaft (18) about a hinge axis (B) which is separate from and substantially parallel to the rotation axis of the transmission shaft (18).

5. The ventilation device according to claim 1 or 2, characterized in that the operating member (30) is movable in translation relative to the casing (2) along an operating direction (C) substantially perpendicular to the rotation axis (R), the movement of the operating member (30) along the operating direction (C) driving the blades (8) in rotation about the rotation axis (R) through the transmission shaft (18).

6. -air vent device according to claim 5, wherein the control member (16) is movable in rotation about a control axis (Z) substantially perpendicular to the rotation axis (R) and to the maneuvering direction (C), the control member (16) being connected to the maneuvering member (30) by a gear device (32), the gear device (32) being arranged such that the rotation of the control member (16) about the control axis (Z) drives the maneuvering member (30) in translation along the maneuvering direction (C).

7. The ventilation device according to claim 6, characterized in that it further has at least one flap (44) extending in the casing (2) in the vicinity of the outlet (6), said flap (44) being hinged to the casing (2) about a rotation axis different from the rotation axis (R) of the blade (8), the gear means (32) being arranged to drive the flap (44) in rotation at a first movement stroke of the control member (16) and to drive the manoeuvring member (30) in movement at a second movement stroke of the control member (16).

8. -air vent device according to claim 1 or 2, wherein the vane (8) has at least one air guiding surface (10), the vane (8) being movable between at least one open position, in which the air guiding surface (10) extends substantially parallel to the direction of air circulation in the vent, and at least one closed position, in which the air guiding surface (10) extends substantially perpendicular to said direction of air circulation.

9. A ventilation device according to claim 1 or 2, characterized in that the ventilation device has at least a first blade (8) and a second blade (8), each movable about an axis of rotation (R), the transmission shaft (18) turning integrally with the first blade (8) and being arranged to drive the second blade (8) in rotation upon the rotational movement of the transmission shaft (18).

10. A ventilation device according to claim 9, characterized in that the transmission shaft (18) has a gear mechanism (40) extending radially around its axis of rotation, said gear mechanism (40) being in mesh with a complementary gear mechanism (42) arranged on the other blade (8), so that rotation of the transmission shaft (18) drives the second blade (8) in a corresponding rotation.

11. Trim for a vehicle cab, having a ventilation device (1) according to claim 1 or 2, characterized in that the outlet (6) of the ventilation opening leads to the opening of the trim.