CN110843506B

CN110843506B - Device for forming fluid line, method for arranging ventilation bell housing and air guide

Info

Publication number: CN110843506B
Application number: CN201910772132.9A
Authority: CN
Inventors: M.伊波利蒂; T.T.默兹; M.斯戈萨利; M.A.埃斯特瓦奥; D.米勒
Original assignee: Volkswagen AG
Current assignee: Volkswagen AG
Priority date: 2018-08-21
Filing date: 2019-08-21
Publication date: 2023-08-15
Anticipated expiration: 2039-08-21
Also published as: DE102018214112A1; CN110843506A

Abstract

The invention relates to a device formed by at least one fluid line (32) arranged on an air guide (12) in the front part (14) of a motor vehicle (10), wherein the air guide (12) is arranged in front of a cooler (18) as seen in the longitudinal direction (x-direction) of the vehicle, and wherein the air guide (12) is made of a foam material, wherein the air guide (12) has at least one open-sided insertion section (30) for frictionally and/or positively securing the at least one fluid line (32). The invention also relates to a method for arranging a ventilation bell (34) of a headlight (26) on an air guide (12) and to an air guide (12) made of foam material.

Description

Device for forming fluid line, method for arranging ventilation bell housing and air guide

Technical Field

The invention relates to a device formed by a fluid line arranged on an air guide made of foam material, in particular a device formed by a ventilation bell for a headlight arranged on the air guide. The invention also relates to a method for arranging a ventilation bell on an air guide and to an air guide made of foam material.

Background

A support for a heat exchanger of a motor vehicle is known from DE 198,256 A1, wherein the heat exchanger can be a charge air cooler, a condenser or an oil cooler. The support comprises a frame constituting an air guiding frame extending from the cooler to the air inlet. The frame may be constructed from thermoplastic foam particles as a foamed molded part. The heat exchanger may be inserted into the frame. For this purpose, the frame comprises two side arms spaced apart from one another, in the inner side of which guides are provided which are designed as grooves in order to be able to push the heat exchanger in the manner of a drawer and to hold it between the two side arms of the frame.

An air guide for a motor vehicle is known from DE 11 2015 002 049 B4, wherein the air guide has a frame with two openings. The first opening is provided for an inlet of an air flow from outside the motor vehicle and the second opening is provided for directing the air flow to the air filter housing. A seal is formed integrally with the air guide or the air filter housing. The air guide may be constructed of polypropylene.

Disclosure of Invention

The object of the present invention is to provide a device formed by a fluid line arranged on an air guide, a method for arranging a ventilation bell on an air guide, and an air guide, by means of which the fluid line or the ventilation bell can be fastened to the air guide in a simple manner.

The object is achieved according to the invention by the features of the independent claims. Further embodiments and advantages of the invention are described in conjunction with the description.

The invention relates to a device formed by a fluid line arranged on an air guide in the front part of a motor vehicle, wherein the air guide is arranged in front of a cooler, seen in the longitudinal direction (x-direction) of the vehicle. A fluid line in the sense of the present invention is understood to mean a line, in particular a pipe or a hose, for guiding a fluid. The tubing may be both rigid and flexible in construction so that gaseous fluids and/or liquids may flow through the tubing. In particular, the fluid line is understood to be a filling hose for a vehicle wash water container and/or a ventilation bell for a headlight. The air guide extends, in particular in the form of a frame or as a substantially closed frame, from the air inlet opening in the region of the cooler protection grille in the front part of the motor vehicle to the cooler, wherein the air guide sealingly encloses the region between the cooler protection grille and the cooler in such a way that all or a majority of the air flow flowing in through the cooler protection grille reaches the cooler. The air guide is thus used to inhibit air from flowing sideways of the air guide and/or the cooler.

The air guide is made of a foam material, in particular EPP (expanded polypropylene) foam. The air guide has in particular a density of more than 30g/l, wherein values between 30g/l and 60g/l, in particular 35g/l or 50g/l, are particularly preferred.

The air guide has an insertion section which is open on at least one side and is used for frictionally and/or positively securing the fluid line. The insertion section has an insertion opening on the open side and enables the fluid line to be inserted into the insertion section in the insertion direction E and thus the fluid line to be fastened to the air guide. The at least one open insertion section is designed in particular for the frictionally engaged fastening of the fluid line, said insertion section holding the fluid line in a clamping manner and preventing the fluid line from being pulled out of the insertion section in a direction opposite to the insertion direction. In particular, a C-shaped insertion section is suitable for this purpose. Such an insertion section requires only a small installation space and is formed, in particular, on the air guide only at the locations where the fluid lines are to be fastened.

The air guide according to the invention with the insertion section enables the fluid line to be fastened without using further components and in particular without using an installation tool. In particular, the fluid line can be mounted on the air guide without the use of a threaded connection, whereby air guides with a smaller wall thickness and thus a lighter weight can be used. In this case, the air guide made of foam material makes it possible to produce an insertion section which is open on one side and by means of which a friction-and/or form-locking connection of the fluid lines can be achieved. In particular, the undercut and the preferably C-shaped insertion section can be easily realized (in view of the elasticity of the foam material) by forced demolding.

The fluid line is in particular a ventilation bell of a headlight, and the insertion section is designed such that the ventilation bell is at least partially accommodated in the insertion section. The ventilation bell is usually provided, i.e. designed or arranged, as an end section of the fluid line for ventilation of the headlight. The ventilation bell has a bell-shaped outer contour with an upper section having a smaller diameter and a lower section having a larger diameter. The upper end of the vent bell is in fluid communication with a fluid line leading to the headlamp. The insertion section for receiving the ventilation bell is in particular configured as a funnel or bell, and preferably the inner contour of the insertion section is adapted to the outer contour of the ventilation bell, i.e. the inner contour of the insertion section is designed complementarily to the outer contour of the ventilation bell. In order to fix the ventilation bell in a friction-locking manner, the insertion section preferably surrounds the ventilation bell over a large part of the circumference of the ventilation bell, except for the insertion opening, at which the insertion section is open on one side. The fixing of the form-locking is effected in particular in a direction transverse (and preferably perpendicular) to the insertion direction E in that the insertion section has at least one contact surface for the ventilation bell. Preferably, the air guide has two insertion sections for respectively fastening the ventilation bell of the right headlight and the ventilation bell of the left headlight.

In a specific embodiment of the device according to the invention, a through-hole penetrating the air guide is formed in the air guide, and the end section of the fluid line is arranged in fluid communication with the through-hole. The end section of the fluid line is in particular the aforementioned ventilation bell which is arranged at the end of the fluid line for ventilation of the headlight. The fluid flowing through the fluid line is advantageously introduced into the air flow flowing from the cooler protection barrier to the cooler through the through-holes in the air guide. It is particularly preferred that a negative pressure is created in the fluid line and in particular in the ventilation bell by the air flowing from the cooler protection grate to the cooler and thus the ventilation of the headlight is improved.

In particular, the end-side section of the fluid line is arranged in a sealing manner in the through-hole, so that air flowing from the cooler protection grate in the direction of the cooler cannot leak through the through-hole. Thus, despite the provision of the through-hole, the sealing function of the air guide is also retained, in that the through-hole is sealed off by the end-side section of the fluid line. No additional components, such as seals, are required for sealing and the air flow from the cooler protection grate in the direction of the cooler is not impeded.

In a further embodiment, the insertion section open on one side extends at least over part of the length of the through-hole. That is to say, the fluid line is fixed directly in the region of the through-opening. Thus, the through hole has two functions: on the one hand for conducting fluid from the fluid line in the direction of the air flow towards the cooler and on the other hand for fixing the fluid line. This results in a particularly space-saving fastening of the fluid line. This combination of through-hole and insertion section is particularly suitable for fastening ventilation bells which, viewed in height, have different diameters and are therefore difficult to insert in the main direction of extension of the through-hole. The ventilation bell can thus be introduced into the through-hole in the insertion direction E simply through the insertion opening.

The ventilation bell is arranged in a particularly loss-proof manner on the air guide when the ventilation bell is positively fixed in the through-opening in at least one direction. In particular, the ventilation bell is fixed in the vehicle height direction and in the longitudinal extension direction of the ventilation bell. This direction corresponds in particular to the direction in which the fluid line leading to the headlight is connected to the ventilation bell. A slight pulling force may be exerted on the ventilation bell by the fluid line leading to the headlight, wherein the ventilation bell is prevented from being pulled out of the through-opening by the form-fitting.

In particular, the ventilation bell is additionally secured in a friction-fit manner, wherein the securing of the friction-fit takes place in a direction different from the vehicle height direction of the ventilation bell. When the insertion section is configured over part of the length of the demolding opening as described above, the ventilation bell is positively and frictionally secured in the through-hole.

The fixing of the ventilation bell in the through-hole is achieved in particular by the first abutment surface and the second abutment surface being formed in the through-hole, wherein the lower section of the ventilation bell, and in particular the lower end, abuts against the first abutment surface and the upper section of the ventilation bell abuts against the second abutment surface. The first abutment surface and/or the second abutment surface are in particular realized as a projection arranged or embodied in the through-hole. The abutment surfaces are in particular arranged or configured such that they positively fix the ventilation bell in the vehicle height direction and thus prevent the ventilation bell from being pulled out in the vehicle height direction and the ventilation bell from being released from the through opening by gravity.

The first contact surface and the second contact surface are stripped in particular in different directions, and the through-holes have correspondingly offset stripping openings which extend transversely to the main through-direction of the through-holes. Preferably, the at least one demolding opening corresponds to an insertion opening for fixing the fluid line in the insertion section open on one side.

The air guide is particularly advantageously produced in one piece, that is to say the insertion section open on one side is produced in one piece on the air guide. The air guide is made of foam material in this case, which facilitates the production of one piece, since a forced demolding of the undercut can be achieved due to the elasticity of the material. The one-piece fabrication is particularly cost-effective.

The invention also relates to a method for arranging a ventilation bell of a headlight on an air guide. In this case, a through-hole is formed in the air guide with a first abutment surface and a second abutment surface, wherein the ventilation bell is pivoted at a defined angle and/or is moved along a complex insertion path, so that the lower section of the ventilation bell abuts the first abutment surface and the upper section of the ventilation bell abuts the second abutment surface. In particular, the lower section, preferably the lower end of the ventilation bell, is first brought into contact with the lower contact surface, the ventilation bell is then pivoted in a defined angular range and the upper section is then brought into contact with the upper contact surface. The pivoting takes place in particular about an axis perpendicular to the main flow direction through the ventilation bell. The elastic air guide facilitates the arrangement of the ventilation bell in the through-opening.

The invention also relates to an air guide made of foam, wherein at least one insertion section open on one side is formed on the air guide, which is used for fixing a fluid line in a friction and/or form-fitting manner. As mentioned above, such an air guide made of foam material enables the construction of such an insertion section in a simple manner, since the elasticity of the material allows forced demolding.

In addition, a through-hole penetrating the air guide is formed in the air guide. In particular, the insertion section extends over a part of the length of the through-opening, so that both the discharge of fluid from the fluid line in the direction of the cooler and the fastening of the fluid line, in particular of the ventilation bell, are achieved. Additional advantages regarding the air guide are referred to in the foregoing description.

Drawings

Further embodiments of the invention are described below with reference to the accompanying drawings. In the drawings:

figure 1 shows a side view of a motor vehicle,

figure 2 shows a front view of a first embodiment of an air guide according to the invention arranged in the front of a vehicle,

figure 3 shows a perspective enlarged view of the area marked III in figure 2,

figure 4 shows a perspective view of the air guide of figure 3 taken along line IV-IV of figure 3,

figure 5 shows a side view of the air guide of figure 3 taken along line IV-IV of figure 3,

figure 6 shows a top view of the air guide with ventilation bell of figure 3 taken along line VI-VI of figure 3,

figure 7 shows a top view of the air guide with ventilation bell in figure 3 taken along line VII-VII in figure 3,

figure 8 shows in a section view taken on the line IV-IV similar to that in figure 3 the device formed by the arrangement of the ventilation bell in the air guide in the first position,

figure 9 shows in a section view taken on the line IV-IV similar to that in figure 3 the device formed by the arrangement of the ventilation bell in the air guide in the second position,

figure 10 shows in a cross-section taken on the line IV-IV similar to that in figure 3 the device formed by the arrangement of the ventilation bell in the air guide in a third position,

figure 11 shows a front view of a second embodiment of an air guide according to the invention arranged in the front of a vehicle,

fig. 12 shows a perspective enlarged view of the region marked XII in fig. 11.

Detailed Description

In fig. 1, a side view of a motor vehicle 10 is shown. The device according to the invention with the air guide 12 is arranged in the front 14 of the motor vehicle 10. The air guide 12 here extends in the front part 14 from a cooler protection grille 16 to a cooler 18 (see fig. 2), the cooler protection grille 16 forming part of the housing of the vehicle 10. The air guide 12 is configured in a frame-like manner and surrounds the region between the cooler protection grate 16 and the cooler 18 and guides the air flowing from the cooler protection grate 16 in the direction L to the cooler 18.

The arrangement of the first embodiment of the air guide 12 in the front part 14 of the vehicle is shown in fig. 2 in a front view without the cooler protection grate 16. Here, it is seen that the main bumper beam 20 and the pedestrian protection beam 22 disposed below the main bumper beam 20 in the vehicle height direction (z direction), the main bumper beam 20 and the pedestrian protection beam 22 being disposed directly behind a cooler protection barrier (not shown) as viewed in the vehicle longitudinal direction (x direction). The air guide 12 extends frame-wise from the main bumper beam 20 rearward in the vehicle longitudinal direction (x-direction) to the cooler 18 and the lock bracket 24 (or front cowl). The air guide 12 rests on the lock bracket 24. Two lock bases 28 are arranged on the lock bracket 24 and a headlight 26 is arranged on the right side.

The air guide 12 is made in one piece from foam.

As can be seen in the enlarged view in fig. 3, two insertion sections 30 open on one side for fastening a fluid line (not shown in fig. 3) are formed in the air guide 12. The insertion section 30 is configured outside the lock seat 28, as seen in the transverse direction (y-direction) of the vehicle. The open-sided insertion sections 30 of the first embodiment are used here for frictional engagement and (as will be explained further below) for positively securing a respective ventilation bell 34 for the headlight 26, which is referred to as a fluid line 32. In this case, the ventilation bell 34 is configured as an end-side section of the fluid line 32. In the first embodiment of the air guide 12, the insertion section 30 is configured correspondingly in the shape of a bell and is adapted to the outer contour of the ventilation bell 34. The insertion section 30, which is open on one side, has an insertion opening 36, and the fluid line 32 is inserted into the insertion section 30 in the insertion direction E. In this case, the insertion opening 36 is oriented forward in the vehicle longitudinal direction (x-direction). As can be seen in fig. 4, 6 and 7, the insertion section 30 is C-shaped and serves here to fix the fluid line 32 or the ventilation bell 34 in a friction fit in the insertion direction E.

The insertion section 30 is partially formed in this case in a tiger-window-shaped region 38 of the air guide 12. As a result of the connection of the locking socket 28, as is clearly shown in fig. 3 and 5 and fig. 8 to 10, the air guide 12 is formed in a partially inclined manner in the region of the insertion section 30, i.e. the air guide 12 extends there in the vehicle longitudinal direction (x-direction) and in the vehicle height direction (z-direction). The tiger window shaped region 38 provides a greater height in the vehicle height direction (z direction) for constructing the insertion section 30.

Additional details of the insertion section 30 are described herein in connection with fig. 4 and 5. The insertion section 30 is simultaneously configured as a through hole 40 penetrating the air guide 12. The insertion section 30 here extends over a part of the length of the through-hole 40 in the vehicle height direction (z-direction).

In order to fix the ventilation bell 34 in the insertion section 30 or the through-hole 40 in a form-fitting manner in the vehicle height direction of the ventilation bell 34 or in the main through-direction of the through-hole 40 (in this case the z-direction), a first contact surface 42 and a second contact surface 44 are formed in the through-hole 40, the first contact surface 42 and the second contact surface 44 being each formed as a projection 46 in the through-hole 40. The (lower) first abutment surface 42 prevents the vent bell 34 from being released downward in the vehicle height direction (z-direction) by gravity, and the (upper) second abutment surface 44 prevents the vent bell 34 from being pulled upward in the vehicle height direction (z-direction).

Demolding takes place in the region of the second contact surface 44 by means of the insertion opening 36 which is directed toward the front. Demolding of the first abutment surface 42 is effected by means of a rearwardly directed demolding opening 48, seen in the longitudinal direction (x-direction) of the vehicle. The first (lower) abutment surface 42 and the second (upper) abutment surface 44 extend over the entire circumference of the insertion section 30, except for the insertion opening 36 or the ejection opening 48.

Fig. 6 to 7 show sectional views of the device formed by the arrangement of the ventilation bell 34 in the insertion section 30 or the through opening 40 of the air guide 12. It can be seen here that the ventilation bell 34 is C-shaped and is surrounded by the insertion section 30, except for the insertion opening 36, and rests with its outer contour against the inner contour of the through opening 40. The vent bell 34 is sealingly disposed in the through-hole 40.

The ventilation bell 34 is of two-part design and has a base body 52 and a filter section 54 extending in the lower half (see fig. 8 to 10). The filter section 54 has a zigzag geometry in plan view.

Fig. 8 to 10 show a method for arranging the ventilation bell 34 in the through-opening 40 and the insertion section 30 in the air guide 12. In this case, the ventilation bell 34 is first introduced into the insertion section 30 in the insertion direction E in a lower section (here in the lower end 56 of the lower section), and then the lower end 56 is brought into contact with the first contact surface 42. The wall of the through-hole 40 has an insertion bevel 58 in the region of the first contact surface 42, so that the lower end 56 of the ventilation bell 34 is particularly simply brought into contact with the first contact surface. After the lower end 56 of the ventilation bell 34 has been brought into abutment with the first abutment surface 42, the ventilation bell 34 is pivoted at a defined angle in a main through direction H (here the z direction) around the through opening 40. Here, the ventilation bell 34 is pivoted approximately 10 degrees. Such pivoting proceeds until the upper section 60 of the ventilation bell 34 comes into abutment with the (upper) second abutment surface 44.

Generally, the ventilation bell 34 is then fixed to the air guide 12 in a form-fitting manner in the main through direction H (here the z-direction) of the through opening 40 and in a friction-fitting manner in the insertion direction E (here the x-direction).

A second embodiment of the air guide 12 is shown in fig. 11 and 12. The same reference numerals are used for the same or at least functionally the same elements as described in relation to the first embodiment in order to describe this second embodiment. Only the differences from the first embodiment will be discussed below.

The air guide 12 according to the second embodiment has an insertion section 30 that is open on one side, wherein a fluid line (not shown) can be secured in a friction fit in this insertion section 30. The insertion section 30 is C-shaped and has an insertion opening 36, through which insertion opening 36 the fluid line can be introduced into the insertion section in the insertion direction E. The insertion opening 30 is oriented outwardly in the vehicle transverse direction (y-direction) for the second embodiment. Such an insertion section 30 is used in particular for guiding or fastening a fluid line on the air guide 12. A plurality of such insertion sections 30 can also be provided, so that the fluid line is fastened to the air guide 12 in a punctiform manner over a large length.

It is furthermore pointed out that the insertion section 30 for the ventilation bell 34 according to the first embodiment and the insertion section 30 according to the second embodiment can be realized jointly on the air guide 12.

The features of the invention disclosed in the present description, in the accompanying drawings, may be important for the implementation of the various embodiments of the invention, both individually and in any combination. The invention may be modified within the scope of the description and taking into account the knowledge of a person skilled in the art.

List of reference numerals

10. Motor vehicle

12. Air guide

14. Front part of the automobile

16. Cooler protection grating

18. Cooling device

20. Main bumper beam

22. Pedestrian protection cross beam

24. Lock bracket

26. Front lighting lamp

28. Lock seat

30. Insertion section

32. Fluid pipeline

34. Ventilating bell cover

36. Insertion opening

38. Tiger window shaped region

40. Through hole

42. First abutting surface

44. Second abutting surface

46. Boss

48. Outer contour of ventilation bell

50. Inner contour of through hole

52. Matrix body

54. Filtration section

56. Lower end of lower section

58. Introduction section

60. An upper section

Claims

1. Device formed by at least one fluid line (32) being arranged on an air guide (12) in a front part (14) of a motor vehicle (10), wherein the air guide (12) is arranged in front of a cooler (18) as seen in the longitudinal direction (x-direction) of the vehicle, and wherein the air guide (12) consists of a foam material,

it is characterized in that the method comprises the steps of,

the air guide (12) has at least one insertion section (30) which is open on one side, the insertion section (30) being used for frictionally engaging and/or positively engaging the at least one fluid line (32), wherein the fluid line (32) is a ventilation bell (34) of a headlight (26), and the insertion section (30) is designed such that the ventilation bell (34) is at least partially accommodated in the insertion section (30), wherein the insertion section is designed as a through-opening (40) penetrating the air guide (12), and wherein a first contact surface (42) and a second contact surface (44) are formed in the through-opening (40), wherein a lower section (56) of the ventilation bell (34) contacts the first contact surface (42) and an upper section (60) of the ventilation bell (34) contacts the second contact surface (44).

2. The device according to claim 1, characterized in that the end-side section of the fluid line (32) is arranged in fluid communication with the through-hole (40).

3. The device according to claim 1, characterized in that the insertion section (30) extends at least over part of the length of the through hole (40).

4. The device according to claim 1, characterized in that the ventilation bell (34) is positively fixed in the through-hole (40) in at least one direction.

5. Device according to one of the preceding claims, characterized in that the air guide (12) is manufactured in one piece.

6. Method for arranging a ventilation bell (34) of a headlight (26) on an air guide (12) which is arranged in the front of a motor vehicle, wherein a through-opening (40) having a first contact surface (42) and a second contact surface (44) is formed in the air guide (12), characterized in that the ventilation bell (34) is pivoted by a defined angle and/or the ventilation bell (34) is moved along a composite insertion path, such that the ventilation bell (34) is brought into contact with the first contact surface (42) with a lower section (56) and an upper section (60) of the ventilation bell (34) is brought into contact with the second contact surface (44).

7. An air guide, consisting of foam, characterized in that at least one open-sided insertion section (30) is formed on the air guide (12), the insertion section (30) being used for frictionally and/or positively securing a fluid line (32), the fluid line (32) being a ventilation bell (34) of a headlight (26) of a motor vehicle, wherein the insertion section is formed as a through-opening (40) penetrating the air guide (12), and wherein a first contact surface (42) and a second contact surface (44) are formed in the through-opening (40), wherein a lower section (56) of the ventilation bell (34) can contact the first contact surface (42) and an upper section (60) of the ventilation bell (34) can contact the second contact surface (44) such that the ventilation bell (34) is at least partially accommodated in the insertion section (30).