Child safety seat for attaching to car seats

Abstract

The present invention relates to a child safety seat for attachment to a motor vehicle seat, the child safety seat comprising a seating area (11), a seat back (10), an impact shield (14), the impact shield having an integrated airbag (15, 15a, 15c) and / or an airbag (15b) disposed within the seating area, an acceleration sensing device for sensing acceleration of the child safety seat, and a control device (19) configured to deploy the airbag (15, 15a-15c) based on acceleration sensed by the acceleration sensing device. [Selected Figure] Figure 1

Description

explanation

[0001] The present invention relates to a child safety seat for attachment to a vehicle seat according to claim 1.

[0002] Child safety seats for attachment to vehicle seats are generally known in the art. Such child safety seats may have an impact shield and / or an integrated belt system. Furthermore, such child safety seats may be designed to be connectable to the vehicle's belt system. Child safety seats typically comprise at least one seat shell, or a seat area and a backrest. Such child safety seats may also include a headrest, or support legs, or other components. In principle, the child safety seat according to the present invention may also have these structures.

[0003] It should also be noted that within the scope of the present invention, the term "child safety seat" is understood to be a generic term for "classic" child safety seats and infant car seats. Within this scope, (unless the specific context indicates otherwise) "child safety seat" is an abbreviation for "child safety seat or infant car seat," and within the scope of the present invention, structures intended for child safety seats are generally also applicable to infant car seats, and vice versa (unless otherwise specified). The same applies to the term "child," which is also understood to be a generic term for children and infants, as well as toddlers. Products referred to as "infant car seats" often comprise (only) a one-piece shell for accommodating an infant or child, and may also comprise a unique belt system, possibly a headrest, and possibly further components. Instead of a (structurally separate) backrest, such an "infant car seat" has a backrest portion connected to a "seat area" into which the child's hindquarters can be accommodated. In contrast, child safety seats for larger children have a backrest portion that is structurally separate from the seat area, and its angle of inclination relative to the seat area can be changed as needed. The structural separation may be formed, for example, by bending or a similar process.

[0004] It is commonly known that a child is secured in a child safety seat by the vehicle's three-point safety belt or by a belt provided on the child safety seat itself (e.g., a five-point harness, chest strap, etc.). In these situations, the belt may pass over the shoulders of the child seated in the seat, facing away from the pelvis. Alternatively, two belts may be provided, each passing over the shoulders.

[0005] All these known systems have one thing in common: when a car is involved in a collision, a child in the seat initially continues to move forward due to the action of mass inertia, and is then suddenly restrained by the belt and / or the impact shield. However, the child's head continues to move forward, which can lead to pitching movements, for example in the cervical spine region, which can result in dangerous injuries. Also frequently occurring is the problem of the child collapsing ("diving") into the seat area and sliding out, for example, under the impact shield.

[0006] Airbag solutions for child safety seats are also generally known in the related art. These aim to ensure corresponding protection of the child, for example in the event of a frontal collision. However, it is believed that the known solutions still require improvement.

[0007] It should be noted at this point that all of the structures described above with respect to the related art (either individually or in combination) may be structures for a child safety seat according to the present invention.

[0008] The object of the present invention is to propose a child safety seat for installation in a motor vehicle, which safely and easily restrains a child during rapid acceleration (and deceleration, where, according to linguistic usage in the field of physics, acceleration means both an increase and a decrease in speed), particularly in the event of a collision, so as to reduce the risk of serious injuries.

[0009] This object is solved in particular by a child safety seat for mounting in a motor vehicle, comprising a seat area, a backrest, an impact shield with an integrated airbag and / or an airbag in the seat area (optionally without an impact shield), an acceleration detection device for detecting acceleration of the child safety seat, and a control device configured to trigger deployment of the airbag based on the acceleration detected by the acceleration detection device.

[0010] The first major aspect is that a child safety seat has an integrated acceleration sensing device therein, which enables the child safety seat to automatically (e.g., without input from the vehicle's electronic systems) deploy an airbag, thereby improving safety.

[0011] An acceleration sensing device is particularly understood to mean a device that responds in such a way (and / or causes an output of this kind) that a control device can trigger the deployment of an airbag if a predetermined acceleration limit is exceeded. The response or output may (but need not) include an electrical / electronic signal. Optionally, the response or output may be a mechanical response of the acceleration sensing device to the exceeding of the predetermined acceleration limit (e.g., a locking mechanism is released), which in turn causes the control device to deploy the airbag (e.g., the release of the locking mechanism and any accompanying operation of the acceleration sensing device or part thereof). In particular, in this type of solution, the acceleration sensing device and the control device may optionally be designed as a single assembly (or even as a single part). However, the acceleration sensing device and the control device are preferably assigned to two different parts or two different assemblies (which may or may not be electrically / electronically connected to each other via cable and / or wirelessly). The distance between the acceleration sensing device and the control device is preferably at least 10 cm. The control device may, for example, be at least partially located on or near the airbag (or integrated into it). The acceleration sensing device may be located at a location more distant from the airbag (e.g., in a seat fixture). In certain embodiments, the acceleration sensing device comprises an acceleration sensor capable of detecting the exceedance of at least one predetermined acceleration limit and transmitting a corresponding output (particularly to a controller).

[0012] The above object is also solved by a child safety seat, preferably of the type described above, for mounting in a motor vehicle, comprising a seat area, a backrest, an impact shield with an integrated distance increasing device, in particular an integrated airbag, a first (in particular upper or front) part, and a second (in particular lower or rear) part, the first part being connected to the body of the child safety seat and the second part being connected to the first part, the second part being arranged to move away from the first part towards the pelvis of a child sitting in the child safety seat (generally downwards and / or rearwards) upon activation of the distance increasing device, in particular the airbag. The child safety seat preferably comprises an acceleration sensing device (in particular of the type described above) for detecting acceleration of the child safety seat, and a control device (in particular of the type described above) arranged to activate the distance increasing device, in particular the airbag, depending on the acceleration detected by the acceleration sensing device thus configured. The first and / or second part may in particular be of a dimensionally stable structure. When the airbag is not deployed, the first and / or second portions may each comprise at least 10%, preferably at least 20%, of the total volume of the impact shield. The volume of the first and / or second portions may be at least 200 cm. 3 , preferably 500 cm 3 The first and / or second parts may comprise padding. The first and / or second parts may be pivotable towards each other (the pivoting and / or deployment being particularly triggered by the activation of the distance augmenting device, particularly an airbag). The volume of the distance augmenting device, particularly an airbag, in its activated state may or may not be smaller than the volume of the first and second parts (together) in their undeployed state. Thus, it is not so important that the airbag be extremely bulky so as to be able to cushion the child by itself, but rather it functions as a distance augmenting device (particularly an airbag) that expands (and optionally deploys) an impact shield, thereby improving its protective function. This does not exclude the possibility that the airbag may have a damping function (as is preferably intended).

[0013] Thus, according to a second main aspect of the invention, an impact shield is proposed whose outer dimensions (envelope), in particular its height under these circumstances, increase when a certain acceleration is exceeded (e.g. during a crash). The impact shield (or parts thereof) should move upwards and / or downwards. An upward movement provides particularly effective protection for the head of a child accelerated forward in the event of a frontal collision. A downward movement provides particular compression for the child's legs and optionally pelvis, thereby preventing the child from "snagging" under the impact shield (which in turn eliminates or reduces this risk).

[0014] In certain embodiments, the impact shield is generally U-shaped when viewed from the side, with the U-shape preferably opening forward (away from the seat back) and / or the airbag being located inside the leg of the U (this is particularly true in the deployed or activated state, and possibly also in the non-deployed or non-activated state). Alternatively or additionally, a belt guide may be provided within the U-shape to accommodate and guide the seat belt or the vehicle belt. The first (upper) part of the impact shield should preferably be secured to the child safety seat and / or held by a vehicle-installed belt, allowing the second part to move toward the child's legs and pelvis. The belt guide may specifically be implemented on the front and / or underside of the first (upper) part.

[0015] The placement of a distance increasing device, in particular an impact shield of an airbag (preferably of the type described above), in or near the belt guide should be regarded as an inventive idea in itself.

[0016] The above objectives are: - seat area, -Backrest, The problem is also solved by a child safety seat, in particular for installation in a motor vehicle of the type mentioned above, comprising an impact shield, an impact shield positioning device for adjusting the position of the impact shield, and / or a belt system including a belt system belt tensioning device, the belt system being capable of being tightened by the belt system belt tensioning device (or belt tightening device), and / or a child safety seat anchorage system including a child safety seat anchorage positioning device, and an acceleration detection device for detecting an acceleration of the child safety seat, and a control device configured to cause the impact shield positioning device to adjust the position, and / or the belt system belt tensioning device (or belt tightening device) to tension, and / or the child safety seat anchorage relative to other components of the child safety seat, in response to a predetermined acceleration, in particular an acceleration detected by an acceleration detection device integrated in the child safety seat.

[0017] The concept of adjustment is particularly understood to refer to the action of moving the respective component (e.g. impact shield and / or child safety seat anchorage) closer to the other component (or body) of the child safety seat. With respect to the impact shield, this particularly means that the impact shield is moved further towards the child (in use) and the child's support surface (downwards and rearwards).

[0018] A third main concept of the present invention (which may be combined in particular with the first and second main aspects or concepts) is to position and tension (tighten) the impact shield and / or belt system (part of the child safety seat) when a predetermined acceleration value is exceeded, so that the safety-critical components (i.e. the impact shield and belt system) hold the child safely and securely in place. For this purpose, an integrated acceleration sensing device (particularly of the type described above) is provided, which triggers a corresponding action particularly independently of an external signal (e.g. from a vehicle acceleration sensor).

[0019] In a preferred embodiment, the acceleration sensing device comprises an acceleration sensor.

[0020] Preferably, the control device operates or takes action in response when an acceleration threshold of at least 2g, more preferably at least 4g, even more preferably at least 6g is exceeded (depending on the circumstances, in particular the respective airbag, distance increaser, and / or impact shield positioning device, and / or belt system belt tensioner), said acceleration threshold additionally or alternatively being less than 25g, preferably less than 20g, even more preferably less than 15g. The letter g represents the acceleration due to gravity.

[0021] When activated, the (respective) airbag may press downward and / or rearward, particularly towards the pelvis / hips and / or legs of a child seated in a child safety seat. However, alternatively (or additionally), the respective airbag may press upward and / or rearward (for example, if positioned above an impact shield or in the seat area). If the airbag presses downward or rearward-downward (diagonally rearward), this is particularly effective in preventing a child from sliding under the impact shield (and thus reducing the risk of this).

[0022] The acceleration sensing device, in particular the acceleration sensor, may be arranged in a part of the child safety seat that is located close to the vehicle or body when the child safety seat is installed, and is particularly preferably arranged in or on a fixing device for fixing the child safety seat to the vehicle or body (e.g. an IsoFix attachment) or for fixing a seat element to the child safety seat base.

[0023] If the acceleration detection device, in particular the acceleration sensor, is located close to the vehicle or vehicle body, abnormal acceleration (or deceleration), such as occurs in a frontal collision, can be detected particularly early, thereby improving safety.

[0024] If at least part of the airbag's motion is directed rearward (e.g., diagonally rearward), the child is actively pushed rearward (in the case of forward acceleration) and held in place by frictional and compressive forces (as would occur, for example, if the airbag were to deploy only downward from the impact shield or upward from the seat surface).

[0025] The airbag may contain a corresponding (inflatable) gas, for example a compressed gas.

[0026] The control device and the acceleration sensing device, in particular the acceleration sensor, may be connected to each other by a cable or wirelessly, with a cable connection being preferred.

[0027] The impact shield may be held in place on the body of the child safety seat by the vehicle belt system or by an additional (particularly integrated in the child safety seat) retention device, such as a tether strap, which may optionally include a cable for transmitting information from an acceleration sensing device, particularly an acceleration sensor, to a control device.

[0028] The child safety seat may have a (self-contained) power supply, in particular for the acceleration sensing device (its acceleration sensor) and / or for the control device, which may be, for example, a battery (for example a 9-volt battery) and / or a rechargeable battery.

[0029] The child safety seat may further comprise a force limiter that limits the force applied to the child by the restraint device, in particular the belt system. The threshold of the force limiter preferably exceeds the threshold of the positioning device, in particular the belt tensioning device of the belt system. This is useful for improving safety, as it prevents the force limiter from taking effect too early (compared to the initiation of the effect of the positioning device). Insofar as the application of the effect of the force limiter and the application of the effect of the positioning device depend on an acceleration threshold, in particular the threshold of the force limiter is at least 0.5 g, preferably at least 1 g, and even more preferably at least 2 g, greater than the threshold of the positioning device or the belt tensioning device of the belt system. Alternatively or additionally, the force limiter may be shut off until the positioning device and / or the belt tensioning device of the belt system are activated.

[0030] The (respective) position adjusting device or the (respective) belt tensioning device (belt tightening device) may cooperate with a control device which may be provided additionally to the control device of the distance increasing device or the airbag or which may be at least partially constituted thereby. In addition, the (respective) position adjusting device or the (respective) belt tensioning device (belt tightening device) may cooperate with an acceleration detection device, an acceleration sensor which may be provided additionally to the control device of the distance increasing device or the airbag or which may be at least partially constituted thereby.

[0031] The belt tensioning device may be configured to apply tension to one or two lap belts.

[0032] The lap belt may be the lower portion of a connected lap-shoulder belt, which may be structurally separated from the shoulder straps (e.g., by any rigid connecting element, which may optionally have a tongue).

[0033] The control device and / or the acceleration sensing device or acceleration sensor may be integrated into the belt tensioning device, or they may be provided separately.

[0034] The child's legs and pelvis may be specifically restrained by a belt tensioning device.

[0035] Optionally, the lap belt may not be pulled (directly), but instead an adjustable strap may be pulled, optionally to indirectly tighten (even more) the shoulder strap (particularly), which is preferably an extension of the (particularly already joined) shoulder strap, optionally connected thereto via coupling elements (e.g., at least three, or exactly three slots).

[0036] In certain embodiments, the corresponding tension may be applied (directly) to both the adjustable straps and the lap belt.

[0037] To provide this tension, the belt or belt portion corresponding to the embodiment may pass through an eyelet (preferably triangular) that is connected or connectable to a belt tensioning device.

[0038] In one embodiment, tension may be applied (directly) to the adjustable straps (and therefore indirectly, primarily to the shoulder straps) to tighten the corresponding belt. Alternatively or additionally, tension may be applied to the seat anchorage, which has the effect of moving the child safety seat closer to (or closer to) the back of the car seat (if a predetermined acceleration threshold is exceeded).

[0039] In certain embodiments, the tensioning device may act on the seat anchorage (only), or on the seat anchorage, adjustable strap and lap belt, or on the seat anchorage and lap belt. When a certain acceleration is detected, each element is preferably pulled or pushed in a corresponding direction (relative to other components of the child safety seat or the body of the child safety seat).

[0040] Each controller may be an electronic controller.

[0041] Generally, the (each) impact shield may be of dimensionally stable construction (especially if the impact shield is not prevented from being deformed during a collision, for example by an airbag, but no external forces other than gravity act on it). The volume of the impact shield is at least 1000 cm 3 , preferably at least 2000 cm 3 The maximum extension of the impact shield may be at least 5 cm, preferably at least 10 cm (each) along three mutually perpendicular axes. The impact shield may include a shock absorber.

[0042] The child safety seat preferably comprises a side impact protection structure. The side impact protection structure is preferably provided in at least one form (more preferably at least two, optionally at least one on each side of the child safety seat), is preferably arranged separately (particularly outward, preferably as an element separate from the seat proper and not specifically supporting the child), and / or is adjustable and / or is arranged laterally of the side impact protection element. At least one side impact protection element may be arranged in the backrest. Alternatively or additionally, at least one side impact protection element may be arranged at the height of the headrest. Alternatively or additionally, at least one side impact protection element may be arranged in the leg area. The (each) side impact protection element is preferably dimensionally stable or rigid. The (each) side impact protection element is preferably configured to be able to assume a functional position (which improves side impact protection) and a neutral position. In the functional position, the (each) side impact protection element preferably projects further outward (to the side) than in the neutral position. The overall width of the child safety seat may be greater when the side impact protection elements are in the functional position than when they are in the neutral position. Switching between the functional and neutral positions may be achieved translationally (sliding, e.g. telescopically) and / or pivotally (folding, in particular in and out of the outer surface of the child safety seat).

[0043] The above object is also achieved by a motor vehicle equipped with a child safety seat of the above kind.

[0044] The above object is also solved by a method for deploying an airbag in a child safety seat for mounting in a motor vehicle seat of the above kind, the seat area, the backrest, and an impact shield with an integrated airbag, wherein an acceleration sensing device integrated in the child safety seat senses acceleration of the child safety seat, and a control device triggers deployment of the airbag based on the acceleration sensed by the acceleration sensing device.

[0045] The above object is further solved by a method of activating an impact shield of a child safety seat for mounting on a vehicle seat of the above kind, the impact shield comprising a seat region, a backrest, an integrated distance increasing device, in particular an integrated airbag, an impact shield having a first (upper or front) part and a second (lower or rear) part, the first part being connected to a body of the child safety seat and the second part being connected to the first part, the distance increasing device, in particular the airbag, being activated to move the second part away from the first part towards the pelvis of a child seated in the child safety seat. The method preferably further comprises detecting an acceleration of the child safety seat and activating the distance increasing device, in particular the airbag, in response to the detected acceleration.

[0046] The above object is further solved by a method for actuating an impact shield and / or a belt system of a child safety seat, in particular for mounting on a motor vehicle seat of the above type, comprising a seat area and a backrest, wherein the impact shield is positioned and / or the belt system is tensioned by a belt system belt tensioning device and / or a child safety seat anchorage is positioned, and an acceleration of the child safety seat is detected, in particular by an acceleration detection device integrated in the child safety seat, which causes an adjustment of the position of the impact shield and / or tensioning by the belt system belt tensioning device at a predetermined acceleration and / or an adjustment of the position of the child safety seat anchorage relative to other components of the child safety seat.

[0047] The features of the preferred method will become apparent from the description of the child safety seat, and in particular the functional features described herein.

[0048] Further variants of the invention are set forth in the dependent claims. [Brief explanation of the drawings]

[0049] In the following text, the invention is explained using exemplary embodiments thereof and explained in more detail with reference to the drawings, in which: [Figure 1] FIG. 1 shows a schematic side view (partially cut away) of a child safety seat according to a first embodiment of the present invention in a first position. [Figure 2] FIG. 2 shows the child safety seat of FIG. 1 in a second position. [Figure 3] FIG. 3 shows a schematic side view (partially cut away) of a child safety seat according to a second embodiment of the invention in a first position. [Figure 4] FIG. 4 shows the child safety seat of FIG. 3 in a second position. [Figure 5] FIG. 5 shows a schematic side view (partially cut away) of the child safety seat of the third embodiment in a first position. [Figure 6] FIG. 6 shows the child safety seat of FIG. 5 in a second position. [Figure 7] FIG. 7 shows a schematic side view (partially cut away) of a child safety seat according to a fourth embodiment of the present invention in a first state. [Figure 8] FIG. 8 shows the child safety seat of FIG. 7 in a second position. [Figure 9] FIG. 9 shows a schematic side view (partially cut away) of a child safety seat according to a fifth embodiment of the present invention in a first (non-actuated) state. [Figure 10] FIG. 10 is a schematic diagram of a belt tensioning device according to a first embodiment. [Figure 11] FIG. 11 is a schematic diagram of a belt tensioning device according to a second embodiment. [Figure 12] FIG. 12 is a schematic diagram of a belt tensioning device according to a third embodiment. [Figure 13] FIG. 13 shows a fourth embodiment of a belt tensioning device according to the present invention.

[0050] In the following description, the same reference numerals are used for identical parts and parts with equivalent functions.

[0051] 1 shows a child safety seat comprising a backrest portion 10 and a seat area 11. The child safety seat further comprises optional elements a base portion 12 and support legs 13.

[0052] An airbag 15 is mounted within (in or adjacent to the top surface of) the impact shield 14. In Figure 1, the airbag 15 is in a deactivated state. An acceleration sensor 17 (details not shown) is located within the seat fixture 16. The acceleration sensor 17 is connected via cable 18 to a control device 19 (details not shown), which activates the airbag 15 (if a predetermined acceleration threshold is exceeded).

[0053] Figure 2 shows the deployed state. As can be seen from this figure, the airbag deploys upward and rearward, thereby protecting the child's head and chest (in the event of a frontal collision). Cable 18 is not shown in Figure 2 for simplicity.

[0054] The embodiment according to Figures 3 and 4 is essentially similar to the embodiment of Figures 1 and 2. In this case, the airbag 15a is bottom-mounted instead of top-mounted. The bottom-mounted airbag 15a is mounted within the lower part of the impact shield 14 and in particular contacts the underside of the impact shield 14. Upon deployment (see Figure 4), the airbag inflates towards the child's legs and pelvis / hips. This effectively prevents "diving in" (sliding under the impact shield) by holding the child firmly in place, in particular by the friction or squeezing action between the seat area and the impact shield, but also by the rearward pushing action of the airbag (towards the child's pelvis).

[0055] The embodiment according to Figures 5 and 6 is (substantially) similar to the embodiment of Figures 1 and 2, with the following differences: In this case, an airbag is not mounted in the impact shield 14 (although an airbag similar to that of Figures 1 and / or 3 may be provided). However, an airbag 15b is provided in the seat area 11 (and, at least in the undeployed state, only on the inside of the front half of the seat area 11). The airbag 15b is adjacent to the upper surface (front area) of the seat area 11. When deployed (see Figure 6), the airbag pushes or deploys obliquely rearward. This has the effect of preventing (or reducing the risk of) a child sliding under the impact shield. The child is again restrained by the corresponding counter pressure of the airbag upon deployment in the rearward direction, not only by a squeezing action but also by a corresponding counter pressure towards the rear. The control device for deploying the airbag (not shown in detail in Figures 5 and 6) can be located, for example, in the seat area 11 next to the airbag and can be connected to the acceleration sensor 17 by a corresponding cable (similar to Figures 1 to 4). In all embodiments, a wireless connection may also be used in all cases instead of a cable connection.

[0056] The embodiment according to Figures 7 and 8 is substantially similar to the embodiment of Figures 1 and 2, with the following differences: In the embodiment of Figures 7 and 8, airbags 15, 15a are not provided on either the top or bottom side (although they may be provided separately or in combination); instead, airbag 15c is disposed between first portion 20 and second portion 21. First portion 20 is the upper portion, and second portion 21 is the lower portion. The two portions 20, 21 may open toward each other. When the airbag is activated (see Figure 8), first portion 20 and second portion 21 are forced apart. As also shown in Figure 8, the side cross section of impact shield 14 is U-shaped (at least when deployed). The (deployed) airbag is located inside the leg of the U. Furthermore, belt guide 22 for tether 23 may pass through the inside of the U.

[0057] Figure 9 shows a further embodiment corresponding to a combination of the embodiments according to Figures 1 and 3. Thus, in this embodiment, both an upper airbag 15 and a lower airbag 15a are provided. For the effects of the airbags 15, 15a, please refer to the description of Figures 1 to 4.

[0058] 10 is a schematic perspective view of a belt tensioning device according to the present invention. Belt tensioning device 24 cooperates with control device 25 (which may be provided in addition to, or may be at least partially constituted by, control device 19 described above) and acceleration detection device and acceleration sensor 26 (which may be provided in addition to, or may be at least partially constituted by, acceleration detection device and acceleration sensor described above), so that control device 25 activates belt tensioning device 24 to apply tension to lap belt 27 when a predetermined acceleration limit is exceeded.

[0059] The control device 25 and / or the acceleration sensing device and acceleration sensor 26 may be integrated into the belt tensioning device or may be provided separately. The lap belt may be an underlying connected lap-shoulder belt or may be structurally separated from the shoulder belt (e.g., by any rigid connecting element (which may include a tongue)).

[0060] As shown in Figure 10, the child's legs and pelvis may be specifically restrained (eg, in the event of an accident).

[0061] The embodiment of Figure 11 is substantially similar to the embodiment according to Figure 10, but in this case the lap belt 27 is not (directly) tensioned, but instead the adjustable strap 28 is tensioned, which indirectly (further) tightens (mainly) the shoulder strap 29. The adjustable strap 28 is preferably an extension of the shoulder strap 29 (especially as mentioned above) and is optionally connected thereto via a coupling element (e.g. having at least three or exactly three slots).

[0062] The embodiment according to FIG. 12 is a combination of the embodiments of FIGS. 10 and 11 insofar as it applies corresponding tension (directly) to both the adjustable strap 28 and the lap belt 27 .

[0063] The corresponding belt or belt portion (in the embodiment according to figures 10 to 13) passes through an eyelet 29 (here preferably triangular) which is connected or connectable to a belt tensioning device 24 so that tension can be applied to it.

[0064] Figure 13 shows a solution in which (direct) tension is applied to the adjustable straps (as in Figure 11) (and therefore indirectly mainly to the shoulder straps 29 as well), which has the effect of tightening the corresponding belts. Tension is also applied to the seat anchorages (if a certain acceleration threshold is exceeded), which has the effect of holding the child safety seat closer to (or pressed closer to) the backrest of the car seat.

[0065] Alternatively, the tensioning device may operate on just the seat anchorage 16, or just the seat anchorage 16 and adjustable straps and lap belt 27, or just the seat anchorage 16 and lap belt 27. When a certain acceleration is detected, each element is pulled (or pushed) in the direction of the arrow shown in Figures 10-13 (relative to other components of the child safety seat or the body of the child safety seat).

[0066] Each controller may be an electrical controller.

[0067] At this point, it should be noted that all the details described in the preceding text, and in particular the details shown in the drawings, are claimed as essential to the invention, either individually or in any combination, variations of which will be familiar to those skilled in the art. The inventions described in the original claims of this application are set forth below. [1] 1. A child safety seat for attachment to a motor vehicle seat, comprising: a seat region (11), a backrest (10), an impact shield (14), the impact shield having an integrated airbag (15, 15a, 15c) and / or an airbag (15b) disposed within the seat region, and further comprising an acceleration sensing device for sensing acceleration of the child safety seat, and a control device (19) configured to deploy the airbag (15, 15a-15c) based on the acceleration sensed by the acceleration sensing device; The child safety seat. [2] a seat area (11), a backrest (10), an integrated distance increasing device, in particular an integrated airbag (15a), an impact shield (14) with a first part (20) and a second part (21), said second part being connected to said first part and arranged to move away from said first part towards the pelvis and / or legs of a child seated in said child safety seat upon activation of said distance increasing device, in particular said airbag (15c), said impact shield being preferably designed to be held or fixed to said child safety seat in the area of said first part, The child safety seat preferably further comprises an acceleration detection device for detecting an acceleration of the child safety seat, and a control device (19) configured to activate the distance increasing device, in particular the airbag (15c), based on the acceleration detected by the acceleration detection device. A child safety seat, especially [1], for attachment to a car seat. [3] - seat area (11), - backrest (10), an impact shield (14) and an impact shield positioning device for positioning said impact shield; and / or a belt system comprising a belt tensioning device, said belt system being capable of being tightened by said belt system belt tensioning device; and / or A child safety seat anchorage system with a child safety seat anchorage position adjustment device, and an acceleration detection device for detecting an acceleration of the child safety seat, and in response to a predetermined acceleration, in particular an acceleration detected by an acceleration detection device integrated in the child safety seat, adjusting the position by the impact shield position adjustment device; and / or tensioning the belt system by a belt tensioning device; and / or adjusting the position of the child safety seat anchorage relative to other components of the child safety seat; A child safety seat, particularly for attachment to a vehicle seat according to [1] or [2], comprising a control device configured to cause the child safety seat to: [4] The child safety seat according to any one of claims [1] to [3], wherein the acceleration detection device comprises an acceleration sensor (17). [5] Correspondingly, the child safety seat of any one of [1] to [4] is characterized in that the control device (19) is activated or operated when an acceleration threshold of at least 2 g, preferably at least 4 g, more preferably at least 6 g, and / or 25 g or less, preferably 20 g or less, more preferably 15 g or less is exceeded. [6] The child safety seat according to any one of [1] to [5], wherein the airbag (15a) is pressed downward and / or rearward, particularly toward the waist and / or legs of a child sitting in the child safety seat, when deployed. [7] In particular, when the child safety seat is mounted, preferably on a fixing device (16), for fixing the child safety seat to the vehicle and chassis or for fixing a seat element to the child safety seat base (12), the acceleration detection device, in particular the acceleration sensor (17), is arranged in a part of the child safety seat that is located near the vehicle or the vehicle body. [8] The child safety seat according to any one of [1] to [7], characterized in that the control device (19) and the acceleration detection device, particularly the acceleration sensor (17), are connected to each other by a cable (18) or wirelessly. [9] The child safety seat of any one of [1] to [8], characterized in that the impact shield (14) is held on the body of the child safety seat by a vehicle belt system or by an additional holding device, particularly one integrated within the child safety seat, for example by a tether, and a cable is optionally provided within the additional holding device for transmitting information, preferably from the acceleration detection device, particularly the acceleration sensor, to the control device.

[10] A child safety seat according to any one of [1] to [9], characterized in that a force limiter is provided to limit the force applied to the child by a restraint device, in particular a belt, and the threshold of the force limiter is preferably greater than the threshold of a position adjustment device, in particular a belt tensioning device of a belt system.

[11] A child safety seat according to any one of [1] to

[10] , characterized by a side impact protection structure, in particular comprising at least one, preferably separately arranged and / or adjustable and / or laterally arranged side impact protection element.

[12] A car equipped with a child safety seat [1] to

[11] .

[13] 12. A method for deploying an airbag of a child safety seat for mounting on a motor vehicle seat, in particular as claimed in any one of claims 1 to 11, comprising a seat region (11), a backrest (10), an impact shield (14) with an integrated airbag (15, 15a, 15c), wherein an acceleration sensing device integrated in the child safety seat detects acceleration of the child safety seat, and a control device (19) triggers deployment of the airbag (15, 15a-15c) based on the acceleration detected by the acceleration sensing device.

[14] A method, particularly according to

[13] , for activating an impact shield (14) of a child safety seat, particularly for mounting on a vehicle seat according to any of [1] to

[11] , comprising a seat region (11), a backrest (10), and an impact shield (14) having an integrated distance increasing device, particularly an integrated airbag (15a), a first portion (20) and a second portion (21), comprising: the second part is connected to the first part, and a distance increasing device, in particular an airbag (15c), is activated to move the second part away from the first part towards the pelvis and / or legs of a child seated in the child safety seat; The method preferably further comprises detecting an acceleration of the child safety seat and activating the distance increasing device, in particular the airbag, based on the detected acceleration.

[15] A method, particularly according to

[13] or

[14] , for activating an impact shield and / or belt system of a child safety seat for attachment to a vehicle seat, particularly according to any of [1] to

[11] , comprising a seat region (11) and a backrest portion (10), comprising: the impact shield (14) is positioned, and / or the belt system is tensioned by the belt system belt tensioning device, and / or the child safety seat anchorage system is positioned; The method further comprises detecting an acceleration of the child safety seat, in particular by an acceleration detection device integrated into the child safety seat, and when the acceleration is detected, adjusting the position of the impact shield and / or pulling the belt system belt tensioning device at a predetermined acceleration rate and / or adjusting the position of the child safety seat anchorage relative to other components of the child safety seat. [Explanation of symbols]

[0068] 10 Backrest 11 Seat area 12 base 13 Support legs 14 Impact Shield 15 Airbag 15a Airbag 15b Airbag 15c Airbag 16 Seat fixing device 17 Acceleration Sensor 18 Cable 19 Control device 20 First Part 21 Second Part 22 Belt guide 23 Tether 24 Belt tensioning device 25 Control device 26 Acceleration sensor 27 Lap Belt 28 Adjustable Straps 29 Shoulder strap 30 small hole

Claims

1. 1. A child safety seat for attachment to a motor vehicle seat, comprising: a seat region (11), a backrest (10), an impact shield (14), the impact shield having an integrated airbag (15a), and an acceleration sensing device for sensing acceleration of the child safety seat, and a control device (19) configured to deploy the airbag (15a) based on the acceleration sensed by the acceleration sensing device; The impact shield (14) is positioned opposite the seat area (11), The airbag (15a) is attached to the lower part of the impact shield (14) on the seat area (11) side, The child safety seat is characterized in that, when activated, the airbag (15a) deploys between the seat area (11) and the impact shield (14) and presses at least partially downward and rearward against the buttocks and / or legs of a child seated in the child safety seat.

2. the impact shield (14) comprises an integrated distance increasing device, a first portion (20) and a second portion (21), the second portion being connected to the first portion and arranged to move away from the first portion and towards the pelvis and / or legs of a child seated in the child safety seat upon activation of the distance increasing device; The control device (19) is configured to operate the distance increasing device based on the acceleration detected by the acceleration detecting device.

10. A child safety seat for attachment to a vehicle seat according to claim 1.

3. 3. A child safety seat according to claim 2, characterized in that said integrated distance increasing device is an integrated airbag (15c).

4. 3. A child safety seat according to claim 2, characterized in that the impact shield is designed to be held or secured to the child safety seat in the area of the first portion (20).

5. an impact shield positioning device for positioning said impact shield (14), and / or a belt system comprising a belt system belt tensioning device, said belt system being capable of being tightened by said belt system belt tensioning device, and / or - further comprising a child safety seat anchorage system with a child safety seat anchorage position adjustment device, The acceleration sensing device responds to acceleration by - adjusting the position of the impact shield by the impact shield position adjustment device; and / or tensioning of the belt system by a belt tensioning device of the belt system, and / or - positioning of a child safety seat anchorage by the impact shield positioning device relative to other components of the child safety seat; 10. A child safety seat for attachment to a vehicle seat as claimed in claim 1, configured to:

6. A child safety seat as described in Claim 5, characterized in that the acceleration detection device is incorporated into the child safety seat.

7. 2. A child safety seat according to claim 1, characterized in that the acceleration detection device comprises an acceleration sensor (17).

8. At least 2 x 9.80665 m / s ２ and / or 25 x 9.80665 m / s ２ 2. A child safety seat according to claim 1, characterized in that the control device (19) is activated or operates in response to exceeding the following acceleration thresholds:

9. 2. The child safety seat according to claim 1, wherein the acceleration detection device is located in a portion of the child safety seat that is located near the vehicle or vehicle body when the child safety seat is installed.

10. 10. The child safety seat according to claim 9, characterized in that the acceleration detection device is arranged in a fixing device (16) for fixing the child safety seat to the vehicle and chassis or for fixing a seat element to the child safety seat base (12).

11. 2. A child safety seat according to claim 1, characterized in that the control device (19) and the acceleration sensing device are connected to each other by a cable (18) or wirelessly.

12. 2. The child safety seat of claim 1, wherein the impact shield (14) is retained to the body of the child safety seat by the vehicle belt system or by an additional retention device.

13. 13. The child safety seat of claim 12, wherein the additional retention device is integrated into the child safety seat.

14. 13. The child safety seat according to claim 12, wherein a cable is provided in the additional holding device for transmitting information.

15. 15. The child safety seat according to claim 14, characterized in that the cable is provided in the additional holding device for transmitting information from the acceleration sensing device to the control device.

16. 10. The child safety seat according to claim 1, characterized by a side impact protection structure comprising at least one separately arranged and / or adjustable and / or laterally arranged side impact protection element.

17. A vehicle equipped with the child safety seat according to claim 1.

18. 1. A method for deploying an airbag in a child safety seat for attachment to a motor vehicle seat, the child safety seat comprising a seat area (11), a seat back (10), and an impact shield (14) with an integrated airbag (15a), the impact shield (14) being positioned opposite the seat area (11) and the airbag (15a) being attached to a lower part of the impact shield (14) on the seat area (11), the method comprising: an acceleration sensing device integrated into the child safety seat detecting an acceleration of the child safety seat; and a control device (19) triggering deployment of the airbag (15a) based on the acceleration detected by the acceleration sensing device, wherein upon activation the airbag (15a) deploys between the seat area (11) and the impact shield and presses at least partially downward and rearward against the buttocks and / or legs of a child seated in the child safety seat.

19. A method for activating an impact shield (14) of a child safety seat for attachment to a motor vehicle seat, the child safety seat comprising a seat area (11), a backrest portion (10), and an impact shield (14) by the method of deploying an airbag as claimed in claim 18, comprising: The impact shield (14) comprises an integrated distance increasing device, a first portion (20) and a second portion (21); the second portion is coupled to the first portion, and the distance increasing device is operative to move the second portion away from the first portion toward a pelvis and / or legs of a child seated in the child safety seat; The method further includes sensing an acceleration of the child safety seat and activating the distance increasing device based on the sensed acceleration.

20. 20. The method of claim 19, wherein the distance increasing device is an airbag (15c).

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