CN110843506A

CN110843506A - Device for forming fluid lines, method for arranging ventilation bells and air guide

Info

Publication number: CN110843506A
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: 2020-02-28
Anticipated expiration: 2039-08-21
Also published as: DE102018214112A1; CN110843506B

Abstract

The invention relates to a device formed by at least one fluid line (32) 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 viewed in the longitudinal direction of the vehicle (x direction), and wherein the air guide (12) is made of a foam material, wherein the air guide (12) has at least one insertion section (30) which is open on one side for frictionally and/or positively fixing the at least one fluid line (32). The invention further 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 a foam material.

Description

Device for forming fluid lines, method for arranging ventilation bells 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 an 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.

Background

DE 19831256 a1 discloses a support for a heat exchanger of a motor vehicle, 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 intake. The frame can be formed from thermoplastic foam particles as a foamed molding. The heat exchanger may be inserted into the frame. For this purpose, the frame comprises two spaced-apart side arms, in the inner sides of which guides designed as slots are provided in order to be able to push in 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 112015002049B 4, wherein the air guide has a frame with two openings. The first opening is provided for the inlet of an air flow from outside the motor vehicle and the second opening is provided for directing the air flow towards the air filter housing. The 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 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. Additional embodiments and advantages of the present 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 of a motor vehicle, wherein the air guide is arranged in front of a cooler as viewed in the longitudinal direction of the vehicle (x direction). A fluid line in the sense of the present invention is to be understood in general as a line, in particular a pipe or a hose, which conducts a fluid. The conduit may be both rigid and flexible in construction so that gaseous fluids and/or liquids may flow through the conduit. In particular, a fluid line is understood to mean a filling hose for a vehicle washing water container and/or a ventilation bell for a headlight. The air guide extends, in particular in the manner of a frame or as a substantially closed frame, from an air inlet in the region of a cooler protective screen in the front of the motor vehicle to the cooler, wherein the air guide sealingly surrounds the region between the cooler protective screen and the cooler in such a way that the entire air flow or a large part of the air flow flowing in through the cooler protective screen reaches the cooler. The air guide thus prevents air from flowing past 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 fixing the fluid line. The insertion section has an insertion opening on the open side and makes it possible to insert the fluid line into the insertion section in the insertion direction E and thus to fix the fluid line on the air guide. The at least one-sided open insertion section is designed in particular for frictionally engaging fastening of the fluid line such that it clampingly holds the fluid line and prevents the fluid line from being pulled out of the insertion section in a direction opposite to the insertion direction. In particular, an insertion section configured in a C-shape is suitable for this purpose. Such an insertion section requires only a small installation space and is constructed, in particular, on the air guide only at the location where the fluid line is to be fixed.

The air guide with an insertion section according to the invention makes it possible to secure a fluid line without using further components and in particular without using installation tools. In particular, the fluid line can be mounted on the air guide without using a threaded connection, as a result of which an air guide with a smaller wall thickness and therefore a lower weight can be used. In this case, the air guide made of foam material enables particularly good production of an insertion section which is open on one side and with which a frictional and/or form-fitting 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, to provide 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 head lamp. The insertion section for receiving the ventilation bell is in particular designed in the shape of 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 complementary to the outer contour of the ventilation bell. In order to fix the ventilation bell in frictional engagement, the insertion section preferably surrounds the ventilation bell over a substantial part of the circumference of the ventilation bell, except for the insertion opening, at which the insertion section is open on one side. The form-fitting fastening 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 transversely to the insertion direction E. Preferably, the air guide has two insertion sections for fastening a ventilation bell of the right-hand headlight and a ventilation bell of the left-hand headlight, respectively.

In a particular embodiment of the device according to the invention, a through-opening penetrating the air guide is formed in the air guide, and an end-side section of the fluid line is arranged in fluid communication with the through-opening. The end-side 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 protective screen to the cooler through the through-openings in the air guide. It is particularly preferred that, by means of the air flowing from the cooler protective screen to the cooler, a negative pressure is formed in the fluid line and in particular in the ventilation bell and thus the ventilation of the headlight is improved.

In particular, an end-side section of the fluid line is arranged in the through-opening in a sealing manner, so that air flowing from the cooler protective screen in the direction of the cooler cannot escape through the through-opening. The sealing function of the air guide is thus retained despite the formation of the through-opening, in that the through-opening is sealingly closed 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 which is open on one side extends at least over part of the length of the through-opening. That is to say that the fluid line is fixed directly in the region of the through-opening. Thus, the vias have two functions: on the one hand for conducting the 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 fixing 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. Thus, the ventilation bell can simply be introduced into the through-hole through the insertion opening in the insertion direction E.

The ventilation bell is arranged in a particularly loss-proof manner on the air guide when it is positively fixed in the through-opening in at least one direction. In particular, the ventilation bell is fixed in the direction of the vehicle height and in the longitudinal extension 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 fit.

In particular, the ventilation bell is additionally secured in a frictional engagement, wherein the securing in the frictional engagement takes place in a direction which differs from the vehicle height direction of the ventilation bell. When the insertion section is formed over part of the length of the stripping opening, as described above, the vent bell is fixed in a form-fitting and frictional engagement in the through-opening.

The form-fitting fixing of the ventilation bell in the through-opening is achieved in particular by the fact that a first contact surface and a second contact surface are formed in the through-opening, wherein a lower section and in particular a lower end of the ventilation bell rests against the first contact surface and an upper section of the ventilation bell rests against the second contact surface. The first contact surface and/or the second contact surface are in particular embodied as a projection arranged or formed in the through-opening. The contact surfaces are arranged or designed in particular in such a way that they fix the ventilation bell in a positive-locking manner 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 in particular demolded in different directions, and the through-hole has correspondingly staggered demolding openings which extend transversely to the main through-direction of the through-hole. Preferably, the at least one demolding opening corresponds to an insertion opening for fastening the fluid line in an insertion section which is open on one side.

In particular, it is advantageous if the air guide is produced in one piece, i.e. the insertion section which is open on one side is produced in one piece on the air guide. The production of the air guide from a foam material is advantageous in this case for the one-piece production, since a forced demolding of the undercut can be achieved due to the elasticity of the material. The one-piece manufacture 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-opening having a first contact surface and a second contact surface is formed in the air guide, wherein the ventilation bell is pivoted at a defined angle and/or is moved along a composite insertion path such that a lower section of the ventilation bell contacts the first contact surface and an upper section of the ventilation bell contacts the second contact surface. In particular, the lower section, preferably the lower end of the ventilation bell, is first placed against the lower contact surface, the ventilation bell is then pivoted by a defined angular range, and the upper section is then placed against 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 further relates to an air guide made of foam material, wherein at least one insertion section that is open on one side is formed on the air guide for frictionally and/or positively fixing a fluid line. As already mentioned, such an air guide made of foam material makes it possible to achieve the construction of such an insertion section in a simple manner, since the elasticity of the material allows a forced demolding.

Furthermore, a through-hole is formed in the air guide, said through-hole penetrating the air guide. In particular, the insertion section extends over a partial length of the through-opening, so that both the discharge of the 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. Reference is made to the preceding description for further advantages of the air guide.

Drawings

Further embodiments of the present 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 part of a vehicle,

figure 3 shows an enlarged perspective view of the region marked III in figure 2,

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

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

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

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

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

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

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

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

fig. 12 shows an enlarged perspective view of the area marked XII in fig. 11.

Detailed Description

Fig. 1 shows a side view of a motor vehicle 10. 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 extends in the front 14 of the vehicle from a cooler protective screen 16 to a cooler 18 (see fig. 2), the cooler protective screen 16 forming part of the outer skin of the vehicle 10. The air guide 12 is configured in the form of a frame and surrounds the region between the cooler protective grid 16 and the cooler 18 and guides the air flowing from the cooler protective grid 16 in the direction L to the cooler 18.

The arrangement of the first embodiment of the air guide 12 in the front vehicle part 14 is shown in fig. 2 in a front view without the cooler protection grate 16. Here, a main bumper cross member 20 and a pedestrian protection cross member 22 arranged below the main bumper cross member 20 in the vehicle height direction (z direction) are visible, the main bumper cross member 20 and the pedestrian protection cross member 22 being arranged directly behind a cooler protective barrier (not shown) as viewed in the vehicle longitudinal direction (x direction). The air guide 12 extends in a frame-like manner from the main bumper beam 20 in the vehicle longitudinal direction (x direction) toward the rear to the cooler 18 and the lock bracket 24 (or front cover). The air guide 12 rests against the lock bracket 24. Two latch receptacles 28 are arranged on the latch bracket 24 and the headlight 26 is arranged on the right.

The air guide 12 is made of a foam material in one piece.

As can be seen in the enlarged illustration in fig. 3, two insertion sections 30 open on one side are formed in the air guide 12 for fastening a fluid line (not shown in fig. 3). The insertion section 30 is formed on the outside of the lock receptacle 28, as viewed in the transverse direction (y direction) of the vehicle. The insertion section 30 of the first embodiment, which is open on one side, serves here for frictionally engaging and (as will be explained below) positively securing a ventilation dome 34, each of which is referred to as a fluid line 32, for the headlight 26. In this case, the ventilation bell 34 is designed as an end-side section of the fluid line 32. In the first embodiment of the air guide 12, the insertion section 30 is correspondingly bell-shaped and 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 an 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 for frictionally engaging securing a fluid line 32 or a ventilation bell 34 in the insertion direction E.

The insertion section 30 is partially formed in a slot-like region 38 of the air guide 12. Due to the connection of the locking socket 28, as is clearly shown in fig. 3 and 5 and 8 to 10, the air guide 12 is configured in the region of the insertion section 30 in a partially inclined manner, i.e. the air guide 12 extends there in the vehicle longitudinal direction (x direction) and the vehicle height direction (z direction). The tiger window-like region 38 provides the building insertion section 30 with a greater height in the vehicle height direction (z direction).

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

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

The demolding takes place in the region of the second contact surface 44 by the insertion opening 36 pointing forward. The demolding of the first contact surface 42 is effected by a demolding opening 48 which is directed rearward, viewed in the longitudinal direction of the vehicle (x direction). The (lower) first contact surface 42 and the (upper) second contact surface 44 extend in the entire circumferential direction of the insertion section 30, with the exception of the insertion opening 36 or the demolding 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 surrounded in a C-shape by the insertion section 30, excluding the insertion opening 36, and rests with an outer contour on the inner contour of the through-opening 40. The ventilation bell 34 is sealingly arranged 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 of arranging the ventilation bell 34 in the through hole 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 a 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-opening 40 has a lead-in chamfer 58 in the region of the first contact surface 42, so that the lower end 56 of the ventilation bell 34 can be brought into contact with the first contact surface in a particularly simple manner. After the lower end 56 of the ventilation bell 34 has been brought into contact with the first contact surface 42, the ventilation bell 34 is pivoted at a defined angle in the main direction H of passage through the through-opening 40 (here the z direction). Here, the ventilation bell 34 pivots about 10 degrees. This pivoting takes place until the upper section 60 of the ventilation bell 34 comes into abutment with the (upper) second abutment surface 44.

In general, the ventilation bell 34 is then fixed in positive engagement in the main through-direction H (here the z-direction) of the through-hole 40 and in frictional engagement in the insertion direction E (here the x-direction) on the air guide 12.

Fig. 11 and 12 show a second embodiment of the air guide 12. The same reference numerals are used for the same or at least functionally identical 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 which is open on one side, wherein a fluid line (not shown) can be fixed in frictional engagement in this insertion section 30. The insertion section 30 is C-shaped and has an insertion opening 36, through which insertion opening 36 a fluid line can be introduced into the insertion section in the insertion direction E. The insertion opening 30 is oriented outward in the vehicle lateral direction (y-direction) for the second embodiment. Such an insertion section 30 serves in particular for guiding or fastening the fluid line on the air guide 12. A plurality of such insertion sections 30 can also be provided, so that the fluid line is fixed in a punctiform manner over a large length to the air guide 12.

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 drawings may be of importance 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 the person skilled in the art.

List of reference numerals

10 Motor vehicle

12 air guide

14 front part of vehicle

16 cooler protective barrier

18 cooler

20 main bumper beam

22 pedestrian protection crossbeam

24 lock support

26 head lamp

28 lock seat

30 insertion section

32 fluid line

34 Ventilation bell

36 insertion opening

38 tiger window area

40 through hole

42 first contact surface

44 second contact surface

46 boss

48 outer contour of a ventilation bell

Inner contour of 50 through hole

52 base body

54 filtration section

56 lower end of the lower section

58 introduction section

60 upper section

Claims

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

it is characterized in that the preparation method is characterized in that,

the air guide (12) has at least one insertion section (30) which is open on one side, wherein the insertion section (30) is used for fixing the at least one fluid pipeline (32) in a friction and/or shape joint mode.

2. Device according to claim 1, characterized in that the fluid line (32) is a ventilation bell (34) of the headlight (26) and in that the insertion section (30) is designed such that the ventilation bell (34) is at least partially accommodated in the insertion section (30).

3. Device according to claim 1 or 2, characterized in that a through-hole (40) penetrating the air guide (12) is formed in the air guide (12), wherein an end-side section of the fluid line (32) is arranged in fluid communication with the through-hole (40).

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

5. Device according to claim 3 or 4, characterized in that the ventilation bell (34) is fixed in a form-fitting manner in the through-opening (40) in at least one direction.

6. Device according to one of claims 3 to 5, characterized in that 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).

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

8. A method for arranging a ventilation bell (34) of a headlamp (26) on an air guide (12), 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 in a defined angular section and/or the ventilation bell (34) is moved along a compound insertion path, such that the ventilation bell (34) contacts the first contact surface (42) at a lower section (56) and contacts an upper section (60) of the ventilation bell (34) with the second contact surface (44).

9. An air guide made of foam material, characterized in that at least one insertion section (30) which is open on one side is formed on the air guide (12), the insertion section (30) being used to fix a fluid line (32) in a frictionally and/or positively engaging manner.

10. Air guide according to claim 9, characterized in that a through-hole (40) penetrating the air guide (12) is formed in the air guide (12).