MX2008010750A - Back supporting device - Google Patents

Abstract

The present invention concerns a back support device (60) for use in a children's chair (1) wherein the children's chair comprises at least one backrest, two side pieces (5), one seat plate (2) and one safety bow (100) with ends (101), wherein the safety bow (100) is detachably fastened to the side pieces (5) and wherein the backrest or the side pieces have at least one opening or groove each, wherein the back support device (60) comprises:a top part (61) stretching beyond the backrest in height;left and right arms (63) for at least partly inlay in the opening(s) or groove(s) in the backrest or the side pieces;wherein parts of the arms (63) are locked in said opening(s) or groove(s) by the safety bow (100). The invention also concerns the use of the back support device, and a children's set comprising the back support device and use of the children's set.

Description

BACKUP SUPPORT DEVICE FIELD OF THE INVENTION The present invention relates to a back support device for a backrest, in particular for raising and adapting a backrest in a child seat. The support device for backrest is suitable for a child seat with low backrest and existing side pieces, possibly with the opportunity for vertical and horizontal adjustment of the seat plate and foot plate. Furthermore, the invention relates to a back support and safety bow assembly for a child seat and the use of a support device for backrest and the assembly in a child seat.

BACKGROUND OF THE INVENTION It is well known that young children, that is, children at the age when they can sit on their own (approximately 6-7 months) until they master sitting safely in a child seat (approximately 2). years), they need additional support to sit properly in the chair. The support helps the child to relax the muscles and the skeleton and prevents the child from leaning away from the chair, possibly also using safety equipment that prevents the child from falling out of the child seat. Ref 194651 In order to obtain maximum support for the child, it is known to mold the seat of a child seat and integrate a transverse arch and a crotch bar. The disadvantage with molded chair seats is that the seat can not be varied in relation to the size and age of the child. Often, this seat is combined with a harness to prevent the child climbing out of the chair. However, the harness does not provide the extra physical support that may be necessary. In recent years, a development has evolved in the direction that more countries and regions have their own safety measures for equipment that will be used by children, such as in children's chairs. This should be taken into account in the development of new child seats, but it may be difficult to adapt chairs that have been produced for a long period before these safety provisions come into force. It is especially difficult to make such adaptations in chairs that have already been sold for many years, without making physical interventions in them. There are thousands of such chairs in homes. Furthermore, it is a disadvantage to have to continually change the production of such chairs as changes are made to the regulations and to install production lines adapted to each country and its special regulations. Therefore, it would also be an environmental advantage to be able to adapt a standard child seat with adaptive equipment and to make simple and reasonable the updating of the chair without having to discard the whole chair when changes occur in the regulation. This is, for example, the case with the Tripp Trapp® child seat, which was developed in 1972 and was patented in 1976 and which continues to be a very popular child seat in many countries. The Tripp Trapp® chair is designed to be adjusted according to the child's body size and, therefore, has a seat plate and a foot plate that can be moved to different height positions as they slide on rails in the side pieces and are locked by narrowing the distance between the side pieces. The seat plate can also be adjusted in the depth position since the plate that is pushed in relation to the backrest is permanent. The backrest consists of two parallel transverse pieces with a height and distance approximately constant one in relation to the other. Both transverse pieces are arched towards the back in the middle portion to adapt to the user's back. For the Tripp Trapp® chair a child safety bow was also developed for use with younger children as described in the Norwegian Patent No. 132. 782 (Petter Opsvik). The safety bow is adjusted to rails adapted inside the side pieces, at the same height as the support device for backrest, and is arched forward to define an opening for the child together with the support device for backing. When installing the safety bow, the safety bow is compressed to slide each of the ends into the rails on the side pieces and in this way the safety bow locks itself in the correct position by its own tension, without the use of tools of any kind. Possibly, a crotch strap can be used which is threaded onto the safety bow and which is fastened via a hole in the seat plate. It has been shown that it is difficult to adapt chairs and equipment for existing children to new effective demands, if the original functions of the chair mentioned above must be maintained at the same time. This is, for example, the case of the demand for a high backrest adapted to children's chairs to prevent the child from backing down and injuring the dorsal vertebrae or falling. From DE 9612828 a support for backrest and a device for filling the seat plate combined for use in a child seat similar to the aforementioned chair is known. The device has the support for backrest with an upper part that extends above the backrest with a rear sleeve to thread on the backing, alternatively a flap for wrapping around the back side of the backrest and reattaching to the filling device by means of a rack. The device being a continuous piece is limited in the adjustment of the height of the seat since a low position will force the transition between the portion of the seat plate and the portion of the backrest support. In addition, the assembly of the device without zipper would need to disassemble the chair, with the help of tools. However, by using a zipper, the device could easily be manipulated by a child, thereby risking the operation of the device. Therefore, one goal is to provide equipment as mentioned above so that owners of older chairs and new chairs can upgrade their chairs according to changes in regulations and standards. In addition, the chair does not need to be equipped as a child seat for younger children when this is not the situation of the users, that is, when the chair is used by a child over 3 years of age or by an adult. Also one goal is to avoid physical adaptations, such as making holes in any of the parts or inserting screws that leave marks of damage in the chair that will be visible when the backup support device or the safety bow are no longer useful. These interventions can also give as a result, the risk that the user makes adaptations in the wrong way, so that security does not remain intact. Therefore, an objective with the invention is to make the attachment of the additional equipment as intuitive and simple as possible, without the use of tools, and to preserve security at the same time.

BRIEF DESCRIPTION OF THE INVENTION In order to achieve these objectives, the applicant has developed a backup support device that solves the aforementioned problems. Therefore, the present invention relates to a backrest support device for use in a child seat where the child seat comprises at least one backrest, two side pieces, a seat plate and a safety arch with ends, the safety bow is releasably attached to the side pieces and the backrest or the side pieces have at least one opening or slot each, the backrest support device has an upper part extending beyond the backrest in the direction of the height and wherein the backrest support device further comprises: left and right arms for embedding at least partly in the opening or openings or the groove or grooves in the backrest or side parts; where the parts of the arms are locked in said opening or openings or slot or grooves by the safety arch. The invention further relates to the use of the support device for a previous backrest in a child seat, a child's set for a child seat comprising said support device for backrest and a safety bow, and the use of the child's set in a child's chair. The invention will now be described in more detail by means of the aid of examples of embodiments and the appended figures, none of which is intended to limit the scope of the invention which is defined only by the appended claims.

BRIEF DESCRIPTION OF THE FIGURES Figure 1 shows a front plan view of a backup device according to the present invention. Figure 2 shows the support device for backrest in figure 1 seen from behind. Figure 3 shows the support device for backrest in figure 1 used in a child seat. Figure 4 shows a detailed view of Figure 3. Figure 5 shows the support device for backrest in Figure 3 seen partly from behind.

Figure 6 shows another prior perspective embodiment of a backup support device according to the invention. Figure 7 shows the support device for backrest in figure 6 seen from behind. Figure 8 shows a third embodiment of a support device for posterior perspective backrest used in a child seat. Figure 9 shows a fourth embodiment of a backrest support device in a rear perspective view used in a child seat from the front. Figure 10 shows a fifth embodiment of a support device for backrest in posterior perspective and used in a child seat from the front.

DETAILED DESCRIPTION OF THE INVENTION As can be seen from Figure 1, the backrest support device 60 according to the invention consists of a plate piece comprising an upper part 61, and a lower part 62, and right arm and left 63. 63 may also be part of 60. The plate piece may preferably be arched slightly concavely in the horizontal plate, especially the central portion, so as to fit the user's back. and possibly also to the existing backrest in the chair where the backup support device is to be installed. Figure 2 shows the support device for backrest 60 seen from behind. As can be seen, the lower part 62 comprises a central extension on the lower end edge which is bent backwards and upwards in the form of a wide hook 64. Also, both arms 63 comprise extensions that run backward like hooks 65. This last feature has a clamping function that is evident from Figure 3. In this figure, the backrest support device 60 is installed in a Tripp Trapp® 1 chair without the use of extra fastening means. The backrest support device 60 is placed with the back side convex towards the concave backrest existing in the chair, consisting of the upper and lower cross pieces arranged in parallel 3 and 4 respectively. The arms 63 of the backrest support device 60 are partly directed in the space between the upper and lower crosspiece 3 and 4 and the original safety arc 100 is forced firmly onto the ends of the arms 63 on the original rails at the ends of the arms 63. 5 side pieces of the chair. The ends of the arms 63 are compressed and thus locked in the space between the cross pieces, without the need for tools. The compression of the arms 63 in the space 63 between the upper and lower transverse part 3 and 4 is shown in greater detail in Figure 4. In this embodiment the width of the arms is a little larger than the space mentioned and in particular the hooks 65 (as shown in figure 2) at the end of the arms 63, which remain between the upper and lower crosspiece 3 and 4 as is evident from Figure 5. Figure 5 further shows the height of the back support device 60 provided at the upper end 61 relative to the original backrest 3, 4. As can also be seen from the figure the hook bent backwards 64 in the lower part 62 holds around the lower edge of the lower transverse piece 4. The objective with the hook 64 is especially to prevent the twisting of the device of support for backrest if the child in the chair leans hard or if it attacks the upper part 61 so that the lower part 62 moves out of the lower transverse part 4. The hook 64 also complements the resistance of the hooks 65 against the backrest support device 60 and is able to move upwards, for example, if the chair is raised in the backrest support device 60.

Alternative Modes In Figure 6 an alternative embodiment of the back support device is shown with an open shape, like an arch. As shown in the figure, the arms 73 of the backrest support device 70 are locked against the cross pieces 3 and 4 by means of the help of the safety bow 100 in the same manner as shown above. However, it should be mentioned that this form of the backrest 70 requires a higher stiffness and resistance of the material in which the back support device is made, than those of the previous embodiment. In this example, the backup support device 70 is made, for example, of wood, hard plastic or metal, and has a shape that reflects that of the safety bow 100. As the backup support device 70 has only one upper part 71 and has no lower part, alternatively it will be necessary with other fixing points to the cross pieces 3 and 4 as shown in figure 7. As can be seen from the figure the arms 73 also comprise hooks 75 which they are locked in the space between the upper and lower transverse piece 3 and 4. In order to reduce the load on the arms 73 and especially the hooks 75, the backrest support device in this embodiment comprises hooks 74 that clamp around the edge top of the piece upper transverse 3. The hooks 74 prevent the child or an adult from grabbing the upper part 71 and bending the support device for forward support with the dangers that this may cause. The open mode provides good ventilation in the child's back and provides the necessary support for the upper back, neck and head area, according to the height position in which the seat plate 2 is placed. The hooks 64 and 74 are an example of fastening means that can be used to lock the support device for backing the crosspiece or the cross pieces or the backrest. Alternatively other fastening means may be used as is known to the person skilled in the art. The torsional stiffness of the support device for backing depends of course on the material from which it is made, as well as the shape, as shown in the above embodiments. The support device for backing can, as a starting point, be made of any material such as wood, metal, plastic, reinforced plastic, foamed plastic or a mixed material, and preferably plastic. The material must possess torsional stiffness and a strength to ensure that the fixing points, that is, the arms 63, 73, the hooks 64, 74 and the hooks 65, 75 do not break under a normal load. Alternatively, different materials can be used in the back support device, such as a laminated assembly where the front side of the back support device has a filling quality, while the back material, or a core, has a stiffening effect. Possibly, the security arch 100 can be made of the same material and contain the same quality, such as a filler, for example. For reasons of comfort and safety it may be an advantage that the backup support device contains some flexibility. Flexibility can keep the child from hurting his back, neck and head if he leans back. The support device for backrest can also preferably absorb the force if the child attacks backwards in a sudden movement and also prevents the chair from tilting back, for example, by means of a filling as mentioned previously. Under such cases, however, there is also a danger that the back side portions of the backrest support device are lifted by themselves a little away from the crosspieces 3 and 4 since the backrest support device can be tensioned in an arch. Therefore, there is a danger that the child will put a finger between the backup support device and the cross pieces 3 or 4 and pinch when the pressure in the backup support device decreases.

In order to avoid pressing the fingers or the like, one or more spacers are disposed on the back side of the back support device as shown in Figure 8 in a third alternative embodiment. The dividers 86 are preferably placed on the inner side of the back side of the backrest support device 80. The spacers butt up with the cross pieces 3 and 4 when the backrest support device is mounted to the chair 1 and maintains the backrest device. support for backrest 80 at a constant distance from the original backrest 3, 4. The dividers 86 are positioned at a distance from the side edges so that the child can not come into contact with them. As the backrest support device 80 is thus moved forward in the chair, the arms 83 are correspondingly adapted and, therefore, comprise extensions directed rearwardly so that the ends can be placed in compression between the ends 101. of the security arch 100 and the space of the transverse parts 3, 4. The arms are molded or clamped on the back side of the back side of the backrest support device. An additional advantage in moving the backrest support device 80 forward in the chair 1 is that the center of gravity of the child is moved forward and thus the risk of the chair tilting backwards and the child attacks back on the chair. In addition, the opening between the security arc 100 and the backup support device 80 is reduced so that young children have even more tight support when seated. Alternatively, the backrest support device can be adjustable in depth, for example, as the dividers 86 and the hook 85 are changeable and are available in different thicknesses, or are adjustable, in order to adapt the seat of the backrest. the best way for the user. In Figure 9 a fourth embodiment is shown, wherein the attachment points for the arms 93 of the backrest support device 90 are displaced with notches in the backrest support device relative to the side edges. The arms 93 are molded or secured to the back side of the backrest support device 90. The arms 93 similarly to the previous embodiment have rearwardly directed extensions corresponding to the thickness of the spacers 96. The displacement of the fixing points by the arms 93 can thus make it possible or easier to thread a cover around the back support device 90, such as a fabric cover and / or a padded cover that protects the support device for backing and / or increases comfort for the user, or also gives another aspect to the backup support device.

In figure 10 a fifth embodiment is shown, corresponding to that of figure 9, but there are no notches in the arms 93. The advantage with this method is that it provides a better aesthetic impression of the back support device 90 and that there are no notches in which the child can be injured. The dividers 8 6, 9 6 can have any shape and any number according to what is practical, preferable and / or aesthetic. In the modalities, more than four separators are shown, two for each transversal piece 3, 4. Alternatively, the spacers can be formed as long protrusions, such as between two and two of the spacers shown, either in a vertical or horizontal direction. Alternatively, a large spacer covering a smaller or larger corresponding area may be used on the back side of the back support device. The essence is that the separator or spacers are not placed too close to the side edges of the backrest support device so that the child can put a finger between the spacers and the backrest 3, 4 and pinch if the backrest support device it is lifted a little from a back. As shown in the figures of the previous embodiments, especially the upper part of the support device for backing can be varied in different shapes and aspects, such as high, low, narrow or wide form, as well as rounded, oval, round or square shape. The most important thing is that the height and shape provide enough support for the child's back, neck and possibly head and that the form is not suitable for the child to hurt or move outside the support area defined by the shape. Any shape and height of the backup support device can be configured to meet the safety regulations of different countries and regions. Likewise, the form can be altered with changes in said regulation and facilitates renewing only the support device for backup, without having to change the complete chair or parts of the chair. Of course this solution is preferable in terms of production, transport and environment. In the embodiments, the chair 1 has an original backrest, consisting of two horizontal parallel transverse pieces 3 and 4 which constitute a continuous opening with a defined height. However, the opening may also consist of two separate apertures in the backrest or the side pieces of the chair, such as two parallel grooves, for example, with a defined height and possibly a defined width. The openings do not need to be continuous either, but they can be slots such as rails that make possible the locking by compressing the arms of the support device for backing with the safety bow and preventing movement by friction. The advantage with the back support device according to the invention is thus that it can be used in an existing chair, such as a Tripp Trapp® chair or other chairs, without making physical changes in any part of the chair, or require the use of fixing means, such as screws. The backrest support device is simply hooked into the backrest by means of the existing components only and is compressed tightly on the side edges with the existing safety bow. The backrest support device does not prevent the adjustment of the chair, such as height adjustment and / or depth adjustment of the seat plate, and thus the original functions of the chair are taken into account. The support device for backrest can be easily removed, possibly together with the arch of security, or it can be replaced, or moved to another corresponding chair when it is no longer needed in the first chair. Another advantage with the support device for backrest according to the invention is that all the fastening mechanisms needed for fastening in a child seat can be integrated into the support device for backrest, as shown in the figures, without the need of extra loose parts or the use of tools. Thus, the invention relates to the use of the support device, for backrest in a child seat, and especially in a chair it can be used in an existing chair, such as a Tripp Trapp® chair. As the backup support device according to the invention is locked by the aid of the safety bow 100, it may be favorable to assemble these parts into a consumer assembly. Therefore, the present invention also relates to a child assembly for a child seat comprising a safety bow and a support device for backrest according to the invention, alternatively together with a child harness and / or a cover for seat and cover for backrest, as well as the use of said set in a child's chair, especially in a Tripp Trapp® chair. The alternatives and features mentioned above can, of course, be used in combination with the others. It is noted that in relation to this date, the best method known to the applicant to carry out the aforementioned invention, is that which is clear from the present description of the invention.

Claims (23)

CLAIMS Having described the invention as above, the content of the following claims is claimed as property:

1. A backrest support device for use in a child seat, characterized in that the child seat comprises at least one backrest, two side pieces, a seat plate and a safety arch with ends, the safety bow is clamped in shape removable to the side pieces and the backrest or the side pieces have at least one opening or slot each, the backrest support device has an upper part extending beyond the backrest in the height direction and wherein the backing device support for backrest further comprises: left and right arms for embedding at least partly in the opening or openings or the groove or grooves in the backrest or the side pieces; wherein parts of the arms are locked in the opening or openings or slot or grooves by the safety bow.

The backup support device according to claim 1, characterized in that the backrest comprises one or more side pieces.

3. The support device for backrest according to claim 2, characterized in that the backrest comprises two parallel lateral pieces, preferably an upper transverse piece and a lower transverse piece with a vertical distance defining the opening as a horizontal opening.

The support device for backrest according to any of the preceding claims, characterized in that the safety bow is fastened to the side pieces by forcing the ends of the safety bow on the rails of the side pieces, preferably without the use of tools.

The backup support device according to any of the preceding claims, characterized in that the ends of the safety bow are arranged to lock the arms in the opening or openings or slot or grooves at least partially covering the arms when the ends of the safety bow are attached to the side pieces.

The support device for backrest according to any of the preceding claims, characterized in that the arms also comprise hooks directed backwards to insert in the opening or openings or groove or grooves in the crosspiece or cross pieces or the side pieces.

7. The support device for backrest according to any of the preceding claims, characterized in that the backrest support comprises one or more fastening means / means suitable for fixing on one or more of the transverse parts or side pieces.

The support device for backrest according to claim 7, characterized in that the fastening means / means are one or more hooks suitable for holding around one or more lower or upper edges of the crosspiece or transverse pieces or edges of the crosspiece. the side pieces, preferably hooks directed backwards.

The backrest support device according to any of the preceding claims, characterized in that the backrest support comprises one or more spacers on the back side of the backrest support device which buttress with the crosspiece or cross pieces.

The backup support device according to any of the preceding claims, characterized in that the support device for backrest can be adjusted as depth.

The backup support device according to claim 9 or 10, characterized because the separator or separators are replaceable or their thickness can be adjusted.

The backup support device according to any of the preceding claims, characterized in that the arms are molded or fixed on the back side of the back support device with a distance from the side edges, so that a cover can be threaded onto the end edges of the backrest support device.

The backup support device according to any of the preceding claims, characterized in that the back support is made of wood, metal, plastic, reinforced plastic, foamed plastic or a mixed material, preferably plastic.

The backup support device according to any of the preceding claims, characterized in that the backup support has a filling quality.

The backup support device according to any of the preceding claims, characterized in that the height of the back support device can be adjusted relative to the user by adjusting the height of the seat plate.

16. The support device for backup of according to any of the preceding claims, characterized in that the back support is made of various materials, preferably in a laminated assembly, more preferably wherein the front side of the back support device has a filling quality.

The backup support device according to any of the preceding claims, characterized in that the back support has a flexibility that bounces against and / or absorbs the movements of the user.

18. The use of a backup support device according to any of claims 1 to 16, in a child seat, such as a Tripp Trapp® chair.

19. A set for a child for a child seat, characterized in that the backrest support comprises a safety arch and a support device for backrest according to any of claims 1-17.

20. The child's assembly according to claim 19, characterized in that the safety bow has a padding, preferably of the same quality as the backrest support device.

21. The child set according to claim 19 or 20, characterized in that the set for child also includes a harness for a child.

22. A child's assembly according to any of claims 19-21, characterized in that the child's set further comprises a cover for a seat and / or a backrest, preferably a cover with padding.

23. The use of a child's set according to claim 19-22 in a child seat, such as a Tripp Trapp® chair.