MX2008010752A - Safety bow for a children's chair - Google Patents

Abstract

The present invention concerns a safety bow (40) for use in children's chair (1) comprising a seat plate (2), a backrest (3, 4) and possibly two side pieces (5), wherein the backrest or side pieces have at least one opening each, the safety bow being a three armed constructional part in one piece comprising:two first ends (43) with first and second connecting members (44) for hooking into the opening(s) in the backrest (3, 4) or the side pieces (5);and a third end comprising a third connecting member (46) for detachable fixing to the seat plate (2). The invention also concerns the use of the safety bow in a children's chair.

Description

BACKGROUND OF THE INVENTION FIELD OF THE INVENTION The present invention relates to a safety arch for a child seat, such as a chair in which the seat plate has a vertical hole in the front, possibly with viability to perform the vertical and horizontal adjustment of the seat plate. In addition, the invention relates to the use of a safety bow in a child seat.

BACKGROUND OF THE INVENTION It is well known that children, that is, children at the age when they could sit by themselves (approximately 6 to 7 months of age) until they master sitting safely without falling into a child seat ( about two years old), they need a safety equipment that prevents them from falling out of the child seat. Often, blockages or obstructions are used, such as arcs or cross bars, possibly combined with a strip or bar in children's chairs for this purpose. Possibly, the entire seat of the chair could be molded like a seat with a transverse arch and an integrated crotch bar. The disadvantage with molded shape chairs is that the seat REF. 195787 It could not be adjusted in relation to the size and age of the child. Frequently, these physical obstructions in the seat are combined with a harness in order to assure the child not to get off the chair. However, a physical block can be used only when the child is so small that he or she is unable to get off, or to provide additional physical support that a harness could not provide on its own. From the document SE 451 530, it is known a safety arch for a child seat that is placed on a conventional chair by strips. The safety bow has two horizontal ends that are connected to the corresponding horizontal top surfaces on the side pieces or the seat. The side pieces are hollow with holes in the upper surface for screws to enter through the bottom and into the reception holes in the lower part of the ends of the arches. The arch also comprises a center piece with a spigot at the lower end for placement inside a hole in the child seat. Furthermore, from EP 1 388 811 it is known a limiting ring for a child seat that is placed in a conventional chair. The limiting ring has two horizontal ends that are associated with the back of the seat, and a separate central rod of support, with a threaded lower end to screw it into the threaded hole in the child seat and an upper end that will be joined with the limiting ring through a cover. In previous years, development has evolved in the direction of more countries and regions that have their own safety measures for equipment that will be used by children, such as in children's chairs. This has to be taken into account in the development of the new children's chairs, although it could be difficult to adapt chairs that have been produced in a long period before these security provisions were put into effect. It is especially difficult to make these adaptations in chairs that have already been sold for many years, without making physical interventions in the chairs. There are thousands of chairs around in homes. This is, for example, the case with the Tripp Trapp® children's chair that was developed at the beginning of 1972 and that was patented in 1976 and which is still a very popular children's chair in many countries. The chair is designed so that it is adjusted in coherence with the size of the child's body and therefore has a seat plate and a foot plate that could be moved in different height positions because they slide on slides in the pieces lateral and are blocked or immobilized when fixing the distance between the side pieces. The seat plate could also be adjusted in the depth position because a plate is pushed relative to the back of the seat, and with which, the child is provided with the use of the chair in a correct length of seat below the straps. The difficulty in adapting the existing seats in the new effective demands has also been proven, above all in order to maintain the original functions mentioned previously of the chair. In order to achieve this, the joining of a safety bow, for example, has to be able to follow the positions of height and depth of the seat. In addition to fixing a safety bow on these chairs, it could also be mentioned that it may be desirable to place a child harness that could be used simultaneously with the safety bow. An additional objective is to provide a fastening means for this additional equipment as mentioned above, so that the owners of the previous chairs could also upgrade their chairs. It is also a goal to avoid physical interventions, such as making holes in any of the parts or the insertion of screws that leave marks of damage or deterioration in the chair that will be visible when they are no longer in Use in children's harness or safety bow. These interventions could also create the risk of the user making adaptations in a wrong way, so that security is not kept intact. Therefore, an objective with the invention is to make the attachment of the additional equipment as simple and intuitive as possible, and the security of support or support at the same time, preferably, without the use of tools. In addition, a safety arc must be simple in its design and reasonable in its production, taking into account that the safety arc is only used for a limited period of time, when compared with the useful life of the chair.

BRIEF DESCRIPTION OF THE INVENTION In order to achieve these objectives, the applicant has developed a security arc that solves the aforementioned problems. Therefore, the present invention relates to a safety bow for use in a child seat with a seat plate, a backrest, and possibly side pieces, wherein each of the backrest or side pieces has at least one orifice, preferably, a hole or horizontal entry, and wherein the safety arc is characterized in accordance with claim 1.

In the following, the invention will be described in greater detail by means of the embodiments and the attached figures, none of which means that it limits the scope of the invention, which is only defined by the appended claims.

BRIEF DESCRIPTION OF THE FIGURES Figure 1 shows a perspective view of the safety bow according to the present invention. Figure 2 shows a side view of the safety bow in Figure 1. Figure 3 shows an installation of the safety bow during fastening in a child seat. Figure 4 shows the safety bow in Figure 3 installed in a children's chair. Figure 5 shows a side view of a second safety arch according to the invention that is installed in two different positions, horizontal and vertical, in a child seat. Figure 6 shows an alternative installation of the safety bow in Figure 6. Figure 7 shows a perspective view of the safety bow in Figure 6. Figure 8 shows a detail of the safety bow in Figure 6.

DETAILED DESCRIPTION OF THE INVENTION As can be seen from Figure 1, the security arch 40 is a three-armed arch in one piece, which comprises an arched crosspiece 41 and a vertical crotch 42. The arcuate crosspiece 41 has two ends 43 with first and second fastening means 44 for fixing to the back of the chair or the side pieces on the chair. Similarly, the end of the crotch part 42 has a third fastening means 46, in this embodiment a press-fit member, for fixing a clamp to the seat plate. As can be seen from Figure 2, the crosspiece 41 comprises a vertical wrapping band 47, in this embodiment, with a projecting upper flange 48 constituting an essentially horizontal surface. The transition between band 47 and tab 48 is curved due to the consideration of comfort for the child and provides excellent support for the child's armpits. The construction also gives the crosspiece added rigidity and strength, as well as torsional stability. Because of the safety regulations or regulations in some countries, it may also be of interest that the band 47 in the crosspiece has a variable width, so that it could be deeper in some places where it is desirable to limit the mobility of the child or in order to reduce the size or shape of the hole defined by the seat plate 2 and the arch 40, as shown in Figure 3. In this modality, the band 47 has a width increase directed downward in the side portions with the flaps 49 on each side in the area between the ends 43 and the crotch strip 42. In Figure 3, it also shows how the safety bow is mounted on the child seat. As can be seen from Figure 2, the connecting members comprise the upward pointing supports 44 bent backward relative to the biased cut of the ends 43, and in Figure 3 it is shown how these supports 44 are hooked between the upper transverse part 3 and the lower transverse part 4 of the backrest in the chair 1. Then, the arc 40 is rotated downward at the front, so that the supports 44 are pressed forward at the upper edge until the connecting member 46 at the end of the crotch part 42 could be engaged with a member. corresponding connection on the base plate 2. In this embodiment, the connection member on the base plate 2 is in an edge groove 12 in a fixing bracket 10, secured to the base plate 2 as shown in FIG. Figures 3 and 4. The piece of crotch 42 which is flexible in some way, allows a deep adjustment of the seat plate according to the size of the child. Depending on the stiffness of the arcuate crosspiece 41, and / or the arrangement of the first and second fastening means 44, the safety arc could also be adapted in different height positions, such as positions 2 - 3 of the plate of seat when tilted forward or backward. Since the crotch part 42 must absorb the loads exerted on the transverse arch 41, it may be preferable that the safety arch 40 further comprises the adjustment surfaces against the child seat 1 that absorb these loads. Depending on the quality and flexibility of the safety bow 40, it may be preferable, for example, for the ends 43 of the cross-piece 41 to further comprise the stop or stop members 45 in the form of downwardly directed stop brackets bent at the front. with respect to the ends 43 as shown in Figure 2. The stopping members 45 will be pressed rearwardly at the upper edge on the upper front edge of the lower transverse piece 4 of the backrest of the chair 1, as shown in FIG. Figure 3 In this way, the safety bow 40 is fully tensioned or deformed when it is locked in the seat 2 and also horizontal movement directed backwards is impeded.

At the same time, the lack of firmness between the chair and the safety arch is avoided. Simultaneously, a part of the load in the safety arc is absorbed. Both in the previous one and in the following modality, the chair 1 has a backrest, which consists of two parallel horizontal transversal pieces 3 and 4 that form a through hole with a defined height. However, the entrance or orifice could only consist of two separate holes in the backrest or in the side pieces of the chair, such as, for example, two parallel grooves with a defined height and possibly a defined width. The orifices do not need to be bypass, although they could be recesses for example, with an edge or a sliding guide that makes possible the closing or the immobilization by means of the hooking of the connection members 44, as shown. The ends 43 of the safety bow could possibly support themselves on the back of the chair or the side pieces in order to immobilize the safety bow and prevent backward movement. In Figure 5, an alternative embodiment of the present invention is shown, wherein the ends 43 of the crosspiece 41 comprise another form of connecting members 50 towards the hole between the cross pieces 3 and 4 of the chair 1. In this embodiment, the connection members 50 comprise protrusion extensions of the ends 43 (of the previous figures) in the backward direction, which could pass through the holes in the backrest 3, 4. The end of the connecting member 50 is completed with a large raised portion directed upwards, so that the safety bow has to be hooked in the holes as described above. However, the connecting members 50 are dimensioned with a greater amount of material in order to absorb larger loads than the organs 44. Thus, there is no need for additional arrest organs 45 on the front end 43. In addition to the raised part 51, the connecting member 50 could also comprise an additional cross slide on the upper edge, as best shown in Figure 7, and which allows the engagement of the crosspiece in an additional depth position. horizontal closer to the backrest as shown in Figure 5. This position would be of interest to younger children who use the chair. In connection with the enlargement of the horizontal bore bounded by the arcuate crosspiece 41 of the safety arch and the backrest, it will be of interest to lower the seating plate 2 as the child grows by changing from the transverse guide 52 to the raised part 51 . In order to use the relative rigid arch 40 in alternating height positions of the base plate 2, the connecting member 46 comprises several locking or immobilization positions. The connecting member 46 comprises several snap fasteners one after the other as shown in detail in Figure 8. As shown in Figure 7, the end of the crotch part 42 comprises a lower press fit tab directed upward 51 as in the previous embodiment, although another downwardly directed snap-in fin 52 is placed on this press-fit fin to prevent downward movement of the crotch strap 42 by itself, rather than a stop edge as shown in Figures 1-4. By releasing the second pressure-fitting fin 52, the crotch strap 42 could be moved further downward in the direction of the slot 12 and a third upwardly-directed snap-in fin 53 will immobilize the crotch strap in a position deeper in the groove 12, and thereby, downward movement will be prevented by the aid of a fourth pressure-fitting fin 54. The crotch strap 42 could additionally have additional numbers of fins for snapping with the object to increase the possibility of adjustment, although the number is limited in a certain way to prevent the piece of length from protruding below the base plate when the safety bow is used in the interior position in this way. In Figure 6 an alternative mounting on a child seat is shown, wherein the safety bow 40 is used with the direct attachment of the crotch strap 42 through the connecting member 46 in a groove in the seat plate 2. By herself. In the original Tripp Trapp® chair there is for example this slot for fixing another type of crotch strap. The seat plate 2 could be displaced in the horizontal direction in order to adapt the depth to both the safety arc and the child. In general, securing the crotch strap 42 by means of a bracket 10, as shown in Figure 5, will provide more room for the movement of the child's legs as the crotch strap is attached to the outside of the crotch strap. the seat plate, while the crotch strap is fastened on the outside of the seat plate, while the space in the embodiment according to Figure 6 is more limited in some way. The safety arc could be produced in any suitable material, such as metal, wood, plastic or other synthetic material or a composite material. Preferably, the safety arch is made of a semi-rigid material that is not supported, although it has sufficient flexibility to adjust the depth of the seat, preferably, is made of plastic. The advantage with the safety bow according to the invention is that it could be used in this way in an existing chair such as a Tripp Trapp® chair or other chairs, without making physical changes in any of the parts of the chair, or by the demand for the use of the fastening means, such as screws. The safety bow is simply hooked only at the rear edge by means of the existing components and at the front edge through any existing groove or clamp on the seat plate. The safety arc could follow the adjustments of the chair both vertically and horizontally up to a certain range, such as by adjusting the height and / or adjusting the depth of the seat plate, without impeding any of the functions of the chair. The safety bow could be removed easily after use or it could be moved to another corresponding chair when it is no longer needed. The possibilities of adjustments that include the safety bow cover the areas of seat plate adjustments, which are of interest for babies and young children. Another advantage with the safety bow according to the invention is that all the necessary fastening members for fixing in the child seat could be integrated in the safety arch, as shown in Figure 6, without the need for additional loose parts or the use of tools. It is noted that in relation to this date the best method known by the applicant to carry out the aforementioned invention, is that which is clear from the present description of the invention.

Claims (18)

1. CLAIMS Having described the invention as above, the content of the following claims is claimed as property: 1. A safety bow for use in a child seat that is constituted by a seat plate with a hole, a backrest and possibly two pieces laterals, wherein each of the backrest or side pieces has at least one hole of a defined height, the safety arch is a construction part of three arms in one piece, wherein the first ends comprise the first and second members of connection and a third end includes a third connection member for releasably fixing the seat plate, characterized in that it comprises: a cross-piece arched in the horizontal direction with the first two ends and connecting members, - the connecting members they are hooked supports that are adapted to fit within the hole in the backrest or side pieces, and - both First ends include stop members that prevent backward movement of the ends through the holes in the backrest or side pieces.
2. 2. The safety bow according to claim 1, characterized in that the third connection member is arranged to be releasably secured in the hole or its releasably secured through a clamp in the hole in the plate, preferably by means of a pressure installation.
3. 3. The safety bow according to claim 1 or 2, characterized in that it can be adjusted in depth and / or height with respect to the backrest and the two possible side parts, in adaptation to the seat plate which can be adjusted in depth and / or height. The safety bow according to any one of the preceding claims, characterized in that the first and second connecting members are adapted to engage within a hole in the backrest between a transverse upper part and a lower transverse part spaced apart in parallel. The safety bow according to any of the preceding claims, characterized in that it comprises an essentially vertical crotch part, preferably with a smooth transition between the horizontal arched crosspiece. 6. The safety bow according to claim 5, characterized in that the transverse piece comprises a mainly vertical wrapping band with a substantially horizontal projecting upper flange, preferably with a rounded transition between them, more preferably, the flange provides a good support for the armpits of the child using the safety bow. The safety bow according to any of the preceding claims, characterized in that the connecting members on the first two ends of the crosspiece are in the form of hooked supports that are directed upwards. The safety bow according to any of the preceding claims, characterized in that it can be adjusted in its depth relative to the backrest. The safety bow according to claim 8, characterized in that each of the first two ends of the transverse part further comprises at least one engaging groove, preferably on the upper side of the crosspiece, for adjustment of the depth of the safety arch through the holes in the backrest or side pieces. The safety bow according to any of claims 1-8, characterized in that the first two ends of the stopping members of the crosspiece are in the form of stopping supports directed downwards. The safety bow according to any of the preceding claims, characterized in that the third connection member is of the shape of a push-up flap directed upwards, preferably, with an overlap stop surface. The safety bow according to any of the preceding claims, characterized in that the crotch part can be adjusted in its height, preferably in several intervals. The safety bow according to claim 12, characterized in that the crotch part comprises at least one additional push-down flap directed downwards, possibly one or more additional push-up flaps directed upwards and possibly a detention surface. The safety bow according to any of the preceding claims, characterized in that the crotch part is semi-rigid, preferably with a supporting resistance. 15. The safety bow according to any of the preceding claims, characterized in that the vertical wrapping band of the transverse part further comprises descending extensions, preferably in the form of fins in the lateral portions with the purpose of limiting the opening between the safety bow and the base plate. 16. The safety bow according to any of the preceding claims, characterized in that the fins of the crosspiece can be adjusted and / or detached. 17. The use of a safety bow according to any of claims 1-11, in a child seat, such as a chair with a seat plate and a foot plate that could be moved to different height positions and depth to be displaced inside and outside the guides on the side pieces of the chair. 18. The use according to claim 17, together with a children's harness.