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Return air blocking device for ventilation of motor vehicle interiors

A technology for motor vehicles and equipment, applied in mechanical equipment, vehicle components, air handling equipment, etc., can solve the problem of not opening the valve disc to build space, etc., and achieve the effect of reducing space and reducing space requirements

Active Publication Date: 2017-03-08
ILLINOIS TOOL WORKS INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in many applications there is not enough build space available to open the disc

Method used

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  • Return air blocking device for ventilation of motor vehicle interiors
  • Return air blocking device for ventilation of motor vehicle interiors

Examples

Experimental program
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Effect test

Embodiment Construction

[0022] Unless otherwise stated, like reference numbers in the figures indicate like objects. Figures 1 and 2 show a return air blocking device 10 according to the invention, viewed from the front and rear. The return air blocking device 10 comprises a frame 12 having a generally rectangular shape and divided in half by a longitudinal web 14 . In particular, the frame 12 with the webs 14 forms two rectangular openings, in each of which a valve flap 16 is arranged. The valve flap 16 is mounted on the frame 12 at one end thereof (the upper end in FIG. 1 ). 1 to 3 show the rest position of the flap 16 . FIG. 3 shows that in this state the end of each valve flap 16 mounted on the frame 12 rests on the first support surface 18 and its opposite end rests on the second support surface 20 . The first and second support surfaces 18, 20 are formed by flanges 19, 21 on the frame 12, respectively. For example, it is clear from FIGS. 1 and 2 that in its rest position the valve flap 16 a...

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Abstract

A return air blocking device for ventilation of the interior of a motor vehicle, with a frame or housing with at least one sealing surface and with at least one flexible valve flap mounted on the frame or the housing, which in an idle position abuts on the sealing surface and prevents a flow of air through the return air blocking device, and which, when a sufficient pressure occurs, assumes an opening position lifted from the sealing surface in which it allows a flow of air through the return air blocking device, wherein the at least one valve flap comprises at least one slit on its end mounted on the frame or housing, wherein the frame or the housing comprises at least one holding projection which engages in the at least one slit.

Description

technical field [0001] The invention relates to a return air blocking device for the ventilation of the interior of a motor vehicle. Background technique [0002] The return air blocking device is fitted in an opening in the body of the motor vehicle. If a positive pressure prevails inside the vehicle compared to the outside of the motor vehicle, the flap of the return air blocking device opens to allow air to flow out of the vehicle interior to reduce the positive pressure. In the opposite direction of flow, the disc acts as a barrier. A return air blocking device for ventilating the interior of a motor vehicle is known, for example, from DE 20 2006 020 365 U1. This return air blocking device has a flap made of closed-cell foam which pivots out of its rest position into an open position. It is also known to flexibly attach one edge of the flap to the housing of the return air blocking device. [0003] Known return air blocking devices require a large amount of construct...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60H1/24F16K15/14
Inventor 尼古劳斯·施瓦茨科普夫马尔科·施帕尼尔
Owner ILLINOIS TOOL WORKS INC
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