Child carrier frame with folding system

A child carrier frame includes a lower frame, an upper frame and a frame support. The frame may be adjusted between an upright position, for use, and a folded position. During folding, the carrier frame may be adjusted both to reduce its height and its width, such that a folded size is obtained that is smaller in at least two dimensions than a similar carrier frame folded to reduce only one of its height and width.

FIELD

The present invention relates to a child carrier frame and in particular to a child carrier frame with a folding system.

BACKGROUND

Child carriers, such as strollers, bicycle trailers, jogging strollers, hiking strollers, etc., often need to be folded for transport and/or for storage. Many child carriers fold only with respect to one of their height or their width. A smaller folded structure could be obtained if a child carrier could be folded both to reduce its height and its width.

SUMMARY OF THE INVENTION

In accordance with a broad aspect of the invention, there is provided a child carrier frame comprising a lower frame including at least a lower left side member and a lower right side member, an upper frame including at least an upper left side member and an upper right side member, a height spacing defined between the lower frame and the upper frame, a width spacing defined between the lower and the upper left side members and their respective right side members, a height adjustment pivotal connection acting between the upper frame and the lower frame to permit at least one of the upper frame and the lower frame to pivot to adjust the height spacing and a width adjustment pivotal connection to permit at least one of the lower left side member and the lower right side member to pivot and at least one of the upper left side member and the upper right side member to pivot to adjust the width spacing and a support frame to support the lower frame and the upper frame and to control pivoting of the height adjustment and the width adjustment pivotal connections.

DETAILED DESCRIPTION OF VARIOUS EMBODIMENTS

A child carrier frame according to the present invention may be adjusted between an upright position, for use, and a folded position. During folding, the carrier frame may be adjusted both to reduce its height and its width, such that a folded size is obtained that is smaller in at least two dimensions than a similar carrier frame folded to reduce only one of its height and width.

A child carrier and child carrier frame according to certain aspects of the present invention have been illustrated inFIGS. 1 to 4. The illustrated carrier and frame are intended to facilitate understanding of the invention, rather than to limit it. As such, it is to be understood that although various features have been shown, alternate embodiments are also possible. Although many such alternates will be described, it is to be understood that other embodiments may be possible.

A child carrier frame according to the present invention includes a lower frame1, an upper frame2and a frame support3.

Lower frame1includes at least a lower left side member1aand a lower right side member1b.Upper frame2includes at least an upper left side member2aand an upper right side member2b.These frame members can take various forms, as will be appreciated. Generally, the frame members are formed to define an outer shape of a child carrier and may be bent and formed to support an outer shell of fabric or other sheet materials, not shown herein.

The lower frame and the upper frame may be spaced apart in the frame such that a spacing distance occurs therebetween. Since, in normal use, this spacing between the upper frame and the lower frame may be considered in a substantially vertical direction, the spacing between the lower frame and the upper frame may be referenced as a height spacing H between the lower frame and the upper frame. In the same way, the frame's lower left side member1amay be spaced from lower right side member1band upper left side member2amay be spaced from upper right side member2bto give the frame a width. Herein, the spacing between the lower members and the spacing between the upper members are collectively referenced as a width spacing W.

Height spacing H and width spacing W can be adjusted, at any particular location along the frame, between a folded height and width (FIGS. 2 and 4) and an upright height and width (FIGS. 1 and 3) by movement of the frame members. One or more height adjustment pivotal connections and one or more width adjustment pivotal connections are provided to act between the frame members to permit the spacing adjustments. In the illustrated embodiment, height adjustment pivotal connections are provided by pivotal connections10on upper frame members2a,2b,while the width adjustment pivotal connections may be provided by pivotal connections10and/or pivotal connections13of the lower frame members1a,1b.

Various pivotal arrangements may be used to act between members1a,1b,2a,2b.For example, the pivotal connections can be made directly or indirectly between the parts and the pivotal connections can be in various forms such as for example of hinges, single pinned connections or universal joints such as dual pinned connections or ball joints, etc.

In the illustrated embodiment, a connector4is used as an interface between the upper frame and the lower frame. The connector can be positioned in various configurations, but in the illustrated embodiment is positioned at an end, for example at the front, of the carrier. Connector4provides a body onto which the upper and lower frame members are connected, which may simplify and strengthen the pivotal connections and the frame, generally. On the connector, a pivotal connection13is provided between an end of each of lower left side member1aand lower right side member1b.Pivotal connections13permit rotation of the lower frame members about a substantially vertical axis such that members1a,1bcan move toward and away from each other to adjust the spacing therebetween and, thereby, the frame's width spacing. As will be appreciated and as shown, the overall folded width can be reduced by positioning the pivotal connections closer than the upright width spacing distance of the lower members1a,1b.The frame members can then be bent out from their pivotal connections to form a desired upright width spacing. In the illustrated embodiment, pivotal connections13are formed by pins engaged through the connector and the material of the lower frame members. Connector4can include slots20into which the lower frame members are connected so that they are supported above and below by material of the connector.

Pivotal connections10, in the illustrated embodiment, are also provided on connector4. Pivotal connections10may be formed by pinning the ends of each of the upper members2a,2bto the connector. Pivotal connections10permit rotation of the upper members both (i) toward and away from each other, to adjust the spacing therebetween and thereby the frame's width spacing W, and (ii) toward and away from lower frame1, to thereby adjust the frame's height spacing H. As will be appreciated, a pivotal connection with such a range of motion can be provided by selection of the orientation of the axis of rotation and/or the shape of the frame member using a single pivot pin at each pivotal connection or by use of a pivotal connection permitting rotation about at least two axes.

Frame support3supports the lower frame and the upper frame and includes a positional control to control pivoting of the pivotal connections, to thereby control adjustment of the height and width spacings. Frame support3can include one or more separate or connected members that connect in various configurations between the upper and lower frame members. The frame support positional control can include any of various mechanisms such as a length adjustment (i.e. telescoping parts), a folding arrangement (i.e. hinged or pinned connections) or rigid removable cross beams (i.e. disconnectable parts, removable pinned connections, etc.) to permit control of pivoting about pivotal connections10,13. Although frame support3may provide rigid members between the parts to hold them in a spaced configuration, such rigid members must be removable or collapsible to permit the members1a,1b,2a,2bto be adjusted for height and or width spacings.

In the illustrated embodiment, frame support3is formed as a back frame. The illustrated frame support includes upper region members3aand lower region members3b.The upper frame2and the upper region members3aof the frame support are connected by pivotal connections6. The lower frame1and the lower region members3bof the frame support are connected by pivotal connections8. The upper region members of the frame support3aand the lower region members of the frame support3bare connected by a component5that allows the frame support3to fold inwardly toward connector4with the upper region members and the lower region members coming together. The component5can be a hinge, a bracket, a bracketed component that folds over itself, or can accommodate pivotal connection to the upper region members of the frame support3aand the lower region members of the frame support3b,etc. In the illustrated embodiment, the upper region members of the frame support3aand the component5are connected by pivotal connections at15and the lower region members of the frame support3band the component5are connected by pivotal connections at17. The pivotal connections8,17of the lower region members3bof the frame support permit rotation of the lower frame members about a substantially vertical axis such that members1a,1bcan move toward and away from each other to adjust the spacing therebetween and thereby the frame's width spacing. The pivotal connections6,15at either ends of the upper region members3aof the frame support permit rotation of the upper members both (i) toward and away from each other, to adjust the spacing therebetween and thereby the frame's width spacing W, and (ii) toward and away from lower frame1, the thereby adjust the frame's height spacing H. As will be appreciated, a pivotal connection with such a range of motion as described with respect to connections6,15,17and8can be provided by selection of the orientation of the axis of rotation and/or the shape of the frame member using a single pivot pin at each pivotal connection or by use of a pivotal connection permitting rotation about at least two axis. In the illustrated embodiment, it has been found that the frame folding is facilitated by provision of a universal joint, such as a ball and socket joint, at pivotal connections6.

Component5can be formed to prevent over-rotation about pivotal connections15and17, if desired. For example, slots22can be formed for retaining upper region members3awherein the back of the slot creates a stop limiting the rotation of members3aabout their pivotal connections. In addition or alternately, stop walls26can be extended adjacent connections17.

In the illustrated embodiment, the frame support3is folding X-shaped configuration with all members connected into component5but other folding frame support configurations can be used, as desired.

In order to provide greater rigidity and/or strength to the frame, it may be desirable to provide more than one frame support. In the illustrated embodiment ofFIG. 1, for example, the upper frame may require reinforcement and a substantially rigid cross beam28may be installed to extend between upper frame members2a,2b,as shown, or upper region members3ato provide such reinforcement. Cross beam28can be secured in various ways to function to reinforce the frame. However, as will be appreciated, the cross beam generally is removable or moveable to permit folding of the frame. For example, cross beam28may be pivotally connected to the frame on one side29and fastened on its opposite end30, as by use of an unlockable pin31, so that it is secured connected between the sides of the frame but can be removed and pivoted out of the way to permit folding.

The illustrated frame, including many pivotal connections may include a locking arrangement to maintain the frame in an upright configuration. Some locking arrangements may include a lock at one of the pivotal connections, such as a lock pin extending through alignable apertures, an over center arrangement, gates, cross beams, etc. In one embodiment, a lock gate21can be removably positioned over slots22into which upper region members3aare positioned when in the upright position. As such, members3acannot move out of slots22until the gate is opened.

The frame may be constructed of any suitable materials, such as wood, steel, plastic, aluminum, and so on.

The frame may include a seat (not shown), which is often slung between several of the frame members.

The frame may include components to accept transport means. For example, axle brackets24may be provided to retain wheels12, skis or other means. Further components may also be provided, such as would accept further wheels or skis, a front single wheel, a handle, a hitch arm, etc. In particular, although the carrier inFIG. 1is illustrated with two wheels as in preparation for towing, other carrier configurations are possible including a three or more wheeled strollers, trailers, side carriers, ski or hiking trailers, etc.

From an upright position, the carrier may be folded by releasing or removing any members that hold the parts in a spaced configuration, such as frame supports, locks, etc. and urging the height spacing and/or width spacing between members1a,1b,2a,2bto be reduced, for example by moving the members together.

This can be done, in the illustrated embodiment, by releasing any locking arrangement, such as by removing opening gate21, in the embodiments ofFIGS. 1 and 2and additionally in the embodiment ofFIG. 1, unlocking and pivoting cross beam28. Then folding can proceed by pushing the upper frame2down towards the lower frame1. When a frame support as shown is used with a center component5, folding can alternately proceed after unlocking by collapsing the frame support about component5. As demonstrated within the circle inFIG. 2the upper region members3aand the lower region members3bcan be folded together by pivoting the frame support inwardly, arrow A, at the component5, with the component5moving forwardly toward the connector4. In so doing, folding of the upper and the lower region members of the frame support is accomplished through the connections at6,8,15and17. This action draws the members1a,1b,2a,2binwardly, arrows B and C, toward each other as permitted by connections10and13. As a result, the carrier can be folded to reduce its width in addition to its height. As will be appreciated, a folding operation can proceed by one movement, which includes moving component5forward relative to the upper and lower frame members.

Unfolding of the illustrated trailer can also proceed in one step, by pulling the component5back away from connector4. This motion drives the parts to upright about the pivotal connections6,8,15,17,10and13.

It is to be understood that even though certain characteristics of the present invention have been set forth in the foregoing description, the description is illustrative only, and changes may be made without departing from the principles of the invention.