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Child seatChild seat description/claimsThe Patent Description & Claims data below is from USPTO Patent Application 20060163923, Child seat. Brief Patent Description - Full Patent Description - Patent Application Claims
BACKGROUND AND SUMMARY OF THE INVENTION [0001] The invention relates to a child seat for a vehicle seat of a motor vehicle. [0002] Solutions are already known from the prior art for securely fastening child seats to a vehicle seat. [0003] There is, for example, the "ISOFIX system", in which two connectors fastened to the child seat engage with snap fasteners around two anchorages which are fastened to the vehicle floor between the seat back and seat surface. [0004] DE 197 22 096 A1 discloses a child seat which has its own belt system and which can be fastened to a vehicle seat of a motor vehicle by means of a three-point seat belt on the vehicle seat side. The child seat is equipped with a tightening device into which a shoulder belt part of the three-point seat belt of the motor vehicle is inserted. In the event of an impact, the tightening device, which is integrated in the child seat, is activated, so that, during a deceleration of the vehicle body, the child seat can immediately respond. [0005] However, a prerequisite for an optimum restraining action of the child in the child seat is that any belt slack of the belt system integrated into the child seat is minimized. [0006] It is therefore the object of the invention to provide a child seat, the belt system of which can be tightened preventatively and/or crash-actively. [0007] According to the invention, a child seat can be fastened to a vehicle seat by a three-point seat belt. The three-point seat belt is equipped as standard with a tightening device which can be accommodated, for example, in the belt retractor or in the belt buckle. The three-point seat belt is coupled to the belt system of the child seat, so that a shortening of the three-point seat belt during an impact causes the belt system of the child seat to be tightened. The three-point seat belt is fastened to the child seat in such a manner that, in the event of a head-on impact, a possible tendency of the child seat to rotate about an ISOFIX fastening, resulting from the connection below the center of gravity of the child seat, can be reduced or completely eliminated. With the coupling of the three-point seat belt to the belt system of the child seat, the crash-active or preventative belt tightening of the three-point seat belt, which belt tightening is generally provided in any case, is transmitted to the belt system of the child seat without a separate belt-tightening unit having to be installed for the child seat. [0008] In one preferred embodiment of the invention, the three-point seat belt is connected to the belt system of the child seat via a coupling element. In this case, the coupling element is designed in such a manner that the tensile forces introduced by the three-point seat belt are reinforced. [0009] The coupling element may be a belt strap, the first free end of which is connected to the three-point seat belt. The second free end of the belt strap is connected to the belt system of the child seat, thus ensuring that force will be transmitted by the three-point seat belt to the belt system of the child seat. [0010] The three-point seat belt can be guided about an upper and a lower belt deflection on the child seat. The lower belt deflection is designed in such a manner that, when the three-point seat belt is tightened, the belt loop guided about the upper and lower belt deflection is shortened and a tensile force can therefore be passed on to the belt strap. [0011] The lower belt deflection can advantageously be designed as a clip which is mounted movably on a lower transverse strut. The upper belt deflection may be designed as an upper transverse strut for deflecting and supporting the three-point seat belt, with it being possible for the belt force applied by a belt-tightening device to be harmonized via the friction on the upper transverse strut. [0012] A stable construction of a child seat can be achieved by the upper transverse strut being connected to the lower transverse strut by two side cheeks. [0013] The installation of the child seat therefore turns out to be very simple: first of all, the buckle latch of the three-point seat belt is inserted into the belt buckle of the vehicle. The shoulder belt part of the three-point seat belt is then guided over the upper transverse strut and threaded into the clip of the lower transverse strut. When the belt is threaded in, the child seat can be anchored by its ISOFIX connectors on the ISOFIX anchorages on the vehicle. [0014] One end of the belt strap may be fastened to the clip, so that, when a belt force acts on the clip, the belt strap is likewise acted upon, so that a shortening of the child seat belt system, which is connected to the belt strap, can therefore take place. [0015] The belt system of the child seat may comprise a harness belt, with it being possible for a Y-distributor for the harness belt to be provided in the back rest. The second end of the belt strap can be fastened to this Y-distributor. [0016] Optimum introduction of force into the belt system of the child seat is ensured by guiding the belt strap via deflecting bars. Care should be taken in the guidance of the belt strap to ensure that a low-friction arrangement of the deflecting bars is selected in order to keep frictional losses of the belt strap minimal. [0017] In addition, a tensioning pulley can be provided through which the belt strap is guided, and which can be held displaceably in a linear guide. As a result, more belt material can be deflected, and the belt can therefore be shortened manually for the purpose of adjusting it to the child. [0018] In one preferred embodiment, the tensioning pulley is connected to a manually operable belt strap of the belt system. As a result, when the tensioning pulley is displaced manually, the manually operable belt strap and subsequent latching enable the belt supplying the belt system of the child seat to be adjusted and matched to the child in a simple manner. [0019] In addition to the tightening device, the child seat can have a force-limiting system which has means for limiting the maximum belt force. A force-limiting system of this type is described in DE 101 07 874 A1. The full contents of the disclosure in DE 101 07 874 A1 are hereby incorporated into the disclosure of the patent application. [0020] The force-limiting threshold of the maximum belt force can advantageously be dependent on the belt length or belt position set, since children's weight depends on their height. [0021] As already mentioned, the child seat can additionally be fastened to the supporting structure of the vehicle via a fastening system, for example the ISOFIX system. The threading of the three-point seat belt through the upper and lower struts together with the ISOFIX system constitutes a particularly user-friendly solution. BRIEF DESCRIPTION OF THE DRAWINGS [0022] One advantageous embodiment of the invention will be explained below with reference to the drawing, in which: Continue reading about Child seat... Full patent description for Child seat Brief Patent Description - Full Patent Description - Patent Application Claims Click on the above for other options relating to this Child seat patent application. ###  How KEYWORD MONITOR works... a FREE service from FreshPatents1. Sign up (takes 30 seconds). 2. Fill in the keywords to be monitored. 3. Each week you receive an email with patent applications related to your keywords. Start now! - Receive info on patent apps like Child seat or other areas of interest. ### Previous Patent Application: Folding child booster seat Next Patent Application: Multiple turn mechanism for manual lumbar support adjustment Industry Class: Chairs and seats ### FreshPatents.com Support Thank you for viewing the Child seat patent info. IP-related news and info Results in 0.51012 seconds Other interesting Feshpatents.com categories: Novartis , Pfizer , Philips , Polaroid , Procter & Gamble , 174 |
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