Child safety seat

Abstract: The seat portion of a rearward facing child safety seat has static rear part (12) and a movable front part (34) which is movable between a deployed position in which its upper surface is contiguous with that of the rear part (35) and a stowed position leaving an opening (36) in front of the rear part (35) for receiving the legs of an older child (40) occupying the child seat with his knees (42) bent and his feet (44) positioned below the level of the static rear part (35).

Description: This invention relates to a child safety seat of the type adapted to be positioned in a rearward facing orientation on a vehicle seat and having a seat body and a support member adapted to abut against the seat back of the vehicle seat, the seat body comprising a seat portion and a backrest. A child safety seat of this type is described in EP-A-751035. Continued use of known seats of this type as a child grows, is limited by abutment of the child's feet against the vehicle seat back. One solution for this problem is to increase the distance between the vehicle seat back and the child seat body. However, this has the disadvantage of reducing the distance between the child's head and the structure of the vehicle in front of the vehicle seat on which the child seat is positioned. In addition, this has the result of increasing the length of belt required when the child seat is secured to the vehicle seat using the vehicle seat belt. A further disadvantage is that parents may be tempted to alleviate the problem by setting the child's seat in a more upright position. This can be uncomfortable and, in extreme cases, risk damage to the child's spine. According to the invention, in a child safety seat of the type described above, the seat portion has a static rear part and a movable front part which is movable between a deployed position in which its upper surface is contiguous with that of the rear part and a stowed position leaving an opening in front of the rear part for receiving the legs of an older child occupying the child seat with his knees bent and his feet positioned below the level of the static rear part. Embodiments of the invention will now be described, by way of example, with reference to the accompanying drawings, in which: Figure 1 is an elevational view of a child safety seat in accordance with a first embodiment of the invention, looking forwardly from the rear of the vehicle in which it is used, with the seat configured for use by a young child; Figure 2 is a sectional view taken on the line 2-2 in Figure 2; Figure 3 is a perspective view of the seat shown in Figure 1 with its movable panel in its deployed position; Figure 4 is a sectional view on the line 2-2 but with the movable panel in its stowed position, for use by an older child; Figure 5 is an elevational view, similar to Figure 1, but with the movable panel in its stowed position; Figure 6 is a sectional view taken on the line 6-6 in Figure 5; Figure 7 is a sectional view, similar to Figure 4, of a second embodiment of the invention; Figure 8 is a sectional view, similar to Figure 7, of a third embodiment of the invention; Figure 9 is a perspective view, similar to Figure 3, of a fourth embodiment of the invention; Figure 10 is a perspective view similar to Figure 3, of a fifth embodiment of the invention; Figure 11 is a sectional view, similar to Figure 2, of a sixth embodiment of the invention; Figure 12 is a plan view of the seat shown in Figure 11 without a seat occupant; Figure 13 is a sectional view, similar to Figure 11, but with the movable panel in its stowed position; Figure 14 is a sectional view, similar to Figure 4, of a seventh embodiment of the invention; Figure 15 is a sectional view, similar to Figure 4 of an eighth embodiment of the invention; Figure 16 is a front view of a ninth embodiment of the invention, with a folding movable panel in its deployed position; Figure 17 is a scrap view of the movable panel of Figure 16 illustrating its movement through its stowed position; Figure 18 is a front view, similar to Figure 16, but with the movable panel in its stowed position; Figure 19 is a longitudinal sectional view of the seat shown in Figure 18; and Figures 20 to 22 are views similar to Figure 17, showing alternative ways of folding the movable panel. Referring to Figures 1 and 2, a child safety seat comprises a seat body 10 in the form of a moulded shell having seat portion 12, a backrest 14, and side walls 16 and 18. The seat body 10 is mounted on a base 20 which rests on the seat portion 22 of a vehicle seat and has two limbs 24 and 26 which abut against the vehicle seat back 28. The child seat is shown as occupied by a relatively young child 30 whose feet 32 rest on a front part 34 of the seat portion 12 of the child seat body 10. As can be seen in Figures 3 and 4, the front part of the seat portion 12 comprises a panel 34 which is pivotable about its rear edge between a deployed position in which it forms a forward continuation of the static rear part 35 of the seat portion 12, as shown in Figures 2 and 3, and a stowed position shown in Figures 4 to 6 in which it lies on top of the static part 35 so as to leave an opening 36 between the two side walls 16 and 18, the movement to the latter position being shown by the arrow 38. As can be seen from Figures 5 and 6, when the panel 34 is in its stowed position, an older child 40 can sit on the seat body 10 with his knees 42 bent and his feet 44 below the seat portion 12. Figure 7 shows a second embodiment of the invention in which the pivotable panel 34 is replaced by a sliding panel 46 which is movable between a deployed position in which it covers the opening 36 and a stowed position in which it is positioned on top of the seat portion 12, as illustrated by the arrow 48. In a variant of this embodiment, the panel 46 is arranged to slide to a stowed position below the seat portion 12. Figure 8 shows a third embodiment of the invention in which the pivoting panel 34 is arranged to pivot to a stowed position below the seat portion 12 instead of above it, the movement being illustrated by the arrow 50. Figure 9 shows a fourth embodiment of the invention in which the side walls 16 and 18 of the seat shell only extend as far from the backrest as the edge of the static rear part 35 of the seat portion 12. In this embodiment the movable portion is in two parts 60 and 62 each of which is mounted on a respective pivot pin 64 which, in turn, projects radially from a respective stub axle 66. Each stub axle 66 projects laterally just above the level of the static seat portion 12. Each of the panels 60 and 62 can pivot from its deployed position to a vertical position on its pivot pin 64, as illustrated by the arrow 68, until it is aligned with a respective opening 72 in the corresponding side wall 16, 18. The panels 60 and 62 can then pivot about their stub axles 66, as illustrated by the arrow 70, so as to be stowed within openings 72 in the side walls 16 and 18. The panel 60 is shown in solid lines in its stowed position and in dotted lines in its deployed position. Alternatively, the panels 60 and 62 may be stowed inside or outside the shell 14. The embodiment of Figure 10 differs from that of Figure 9 in that the two front panels 74 and 76 are mounted so as to slide into the openings 72, as illustrated by the arrow 77, after pivoting to vertical positions in alignment with their respective openings 72 as illustrated by the arrow 68. Figures 11 to 13 show another embodiment in which the front part of the seat portion 12 comprises a movable panel 78 comprising a set of transverse slats interconnected by hinges so that the panel is flexible in the transverse direction of the seat. When the panel 78 is to be moved to its stowed position, it slides on top of the rear part of the seat portion 12 and the older child 40 sits on top of this sliding panel 78, as shown in Figure 13. Alternatively, the panel 78 may slide underneath the rear part of the seat portion 12. The panel 78 may be formed as a blow-moulding with bridges of reduced thickness forming integral hinges between the slats. Alternatively, the slats may be secured to a fabric layer by adhesive, the fabric forming the hinges. Figure 14 shows another embodiment in which the front part of the seat portion 12 comprises a rigid detachable panel 80 which can be stowed in a slot 82 in the base 20 of the child seat 10 when the seat is used by an older child 40. If desired, the panel 80 can be pulled part way out so as to project between the base 20 and the vehicle seat back 28 and thus protect the seat portion 22 of the vehicle seat from the child's feet 44. Figure 15 shows yet another embodiment having a detachable panel 80, similar to the correspondingly numbered panel in Figure 14, which is secured to the child seat body 10 by a flexible cord 84. When the seat shown in Figure 15 is being used by an older child, the panel 80 is clipped on to the outside of the backrest 14. Figure 16 shows a child seat 86, occupied by a young child 30, which differs from the child seat 10 in that the front part of its seat portion 12 comprises a panel having a central region 88 and two side flaps 90 and 92 which can be folded inwardly as illustrated in Figure 17. When the seat 86 is to be occupied by an older child 40 as shown in Figures 18 and 19, the two flaps 90 and 92 are folded inwards so as to lie on top of the central region 88 which is lowered and slid into an opening 94 in the base 20. Alternatively the flap 88 can be left partially projecting from the opening 94, so as to serve as a footrest in a similar manner to that described with reference to Figure 14. Instead of folding upwardly on to the top of the central region 88, as shown in Figure 17, the side flaps 90 and 92 may be arranged to slide below the central region 88 as shown in Figure 20. Alternatively, as shown in Figures 21 and 22, the front panel for the seat 86 may have a central region formed in two parts 94 and 96 interconnected by a central longitudinal hinge 98 which allow the parts 94 and 96 to fold downwards. The side flaps 90 and 92 are connected to the edges of the central parts 94 and 96 by hinges so as to be drawn towards one another as the central parts 94 and 96 fold downwards. A child safety seat in accordance with any of the embodiments of the invention may be secured in place on a vehicle seat using a vehicle seat belt. Alternatively, it may be secured in place by using separate straps or by using rigid anchorages, as described in EP-A-0619201.

Claims: A child safety seat adapted to be positioned in a rearward facing orientation on a vehicle seat (22) and having a seat body (10) and a support member (24, 26) adapted to abut against the seat back (28) of the vehicle seat, the seat body comprising a seat portion (12) and a backrest (14), characterised in that the seat portion has a static rear part (35) and a movable front part (34, 46, 60-62, 74-76, 78, 80, 88-96) which is movable between a deployed position in which its upper surface is contiguous with that of the rear part (35) and a stowed position leaving an opening (36) in front of the rear part (35) for receiving the legs of an older child (40) occupying the child seat with his knees (42) bent and his feet (44) positioned below the level of the static rear part (35). A child safety seat according to claim 1, wherein the movable front part (34) is mounted on the seat body (10) for pivotal movement about its rear edge. A child safety seat according to claim 1, wherein the movable front part (46) is mounted on the seat body (10) for sliding movement between a deployed position in which it covers the opening (36) and a stowed position in which it overlaps the static rear part (35). A child safety seat according to claim 3, wherein the mobile front part comprises a central portion (88) having side flaps (90, 92) which are movable into a stowed position in vertical alignment with the central portion (88). A child safety seat according to claim 3 or 4, wherein the central portion is formed in two parts (94, 96) interconnected by a central longitudinal hinge (98) which allow the parts (94, 96) to fold downwards. A child safety seat according to claim 3, wherein the movable front part (78) comprises a set of transverse slats interconnected by hinges so as to be flexible in the transverse direction of the seat body (10). A child safety seat according to any of claims 1 to 6, wherein the stowed position of the movable front part (34, 46, 78) is below the static part (35). A child safety seat according to claim 1, 2 or 3, wherein the stowed position of the movable front part (34, 46, 78) is above the static part (35). A child safety seat according to claim 1, wherein the movable front part is formed in two portions (74, 76) mounted on respective pivot axles (64) which project forwardly from the side edges of the static rear part (35). A child safety seat according to claim 9, wherein each of said pivot axles (64, 66) is mounted on a static pivot axle (66) which projects laterally adjacent and parallel to the front edge of the static rear part (12). A child safety seat according to claim 1, wherein the mobile front part comprises a detachable panel (80) secured to the child seat body (10) by a flexible cord (84).

Inventors: WETTER HERMANN, WETTER, HERMANN
Applicants: BRITAX ROEMER KINDERSICHERHEIT, BRITAX ROEMER KINDERSICHERHEIT GMBH
Application year: 1999
Main classification: B60N2
IPC codes: B60N2