Multi-functional child high chair

A multi-functional child high chair includes a pair of incurved fore legs and a pair of incurved rear legs collapsibly connected by a pair of circular joints, a first stretcher connected the lower end of the fore legs including a pair of casters at two end, a second stretcher connected the lower end of the rear legs including two caster at each end, a pair of rotary positioning joint slidably sleeved on the upper portion of the fore legs respectively and axially connected to a chair seat therebetween. The chair seat has an angle of elevation adjustable chair back, a large and a small platform and an adjustable foot rest. The rotary positioning joints facilitate the ascent and descent of the chair seat along the guide groove of the fore legs. A pair of drag devices respectively disposed in the fore legs and controlled by the rotation of the circular joints. When the legs are collapsed and laid on the ground, the chair is swinging to and fro as a cradle and/or stably supported by a pair of spare supports to become a bed for a child.

BACKGROUND OF THE INVENTION

The present invention relates to children apparatus and more particularly to a multi-functional child high chair which is collapsible and in which the chair seat can be vertically adjustable, and wobbly to and fro as swinging on a swing.

The children high chair is available in the market and is varied in types. In the family or restaurant, this high chair is used to serve for a child to have meal together with its parents. Some of the high chairs can adjust their height in order to enable the child to reach the table and some of the high chairs directly make a releasable platform in front of the chair to facilitate the child to eat itself. However, these types of high chair only provide a single function. If wishes to cheer the child, one has to buy other children apparatus such as a wobbly playpen or a cradle. Therefore, if a collapsible multi-functional child high chair which facilitates the child to sit in, to feed on and to swing about is available, it will provide great convenience and happiness to the parents.

SUMMARY OF THE PRESENT INVENTION

The present invention has a main object to provide a multi-functional child high chair which is collapsible to reduce the volume to facilitate to collect or to pack for transportation.

Another object of the present invention is to provide a multi-functional child high chair in which the chair seat is vertically adjustable and wobbly to and fro as to swing on a swing.

Still another object of the present invention is to provide a multi-functional child high chair which includes a releasable platform in front of the chair seat to facilitate the child to have meal or to play toys thereon.

Further object of the present invention is to provide a multi-functional child high chair which provides a linking-up device to actuate a drag device in order to facilitate the chair seat to descend to a lowermost position.

Further object of the present invention is to provide a multi-functional child high chair when adjust the height of the chair seat, it always keeps horizontal state.

Further object of the present invention is to provide a multi-functional child high chair in which the angle of elevation of the chair back is adjustable to facilitate the child to lie on its back.

The present invention will become more fully understood by reference to the following detailed description thereof when read in conjunction with the attached drawings.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT

With reference toFIGS. 1,2and3of the drawings, the multi-functional child high chair of the present invention comprises generally a pair of fore legs10, a pair of rear legs20, two circular joints30, a chair seat40, a chair back50, two rotary positioning joints60, an angle adjustment device70, a small platform80and a pair of drag devices90.

The fore legs10and the rear legs20are relatively arcuate inward. A first stretcher11has a first caster seat12perpendicularly secured to each end and respectively sleeved onto the lower end of the fore legs10. Each of the first caster seats12has a caster13rotatably secured to lower end. The casters13can turn around to change direction for the chair. A second stretcher21has a second caster seat22perpendicularly secured to each end and respectively sleeved onto the lower end of the rear legs. Each of the second caster seats22has a pair of casters23coaxially secured to two lateral sides. The rear side of the upper portion of the fore legs10has a plurality of inclined surfaces14continuously formed (as shown inFIG. 15) so as to define a plurality of shoulders141at their lower ends. The upper inner side of each fore leg10parallel connects a sliding bar15each of which has a guide groove151in the center along the length thereof (as shown in FIG.21). The guide grooves151each has a transverse outlet152above their lower ends.

The two circular joints30are the some structure but symmetrically arranged. Each of the circular joints30is combined with an inner disk31, an outer disk32and an inner cap33co-axially and rotatably connected by an axial pin34(as shown in FIGS.6and7). The inner disk31has a plurality of first stop blocks312spacedly formed around inner circumference, an arcuate guide slot36abutting an abnormal through hole361in a lower portion and a first sleeve311extended downward from a lower periphery for connecting itself to the upper end of the fore legs10. The outer disk32has a plurality of second stop blocks323spacedly formed around the inner circumference made engageable with the first stop blocks312for limiting the stretching angle between the fore and rear legs10and20, a small protrusion324on an upper inner surface for connecting a linking-up cord94of the drag device90, a stop plate35on an inner surface beneath the small protrusion324, a through hole321in a lower portion engageable with the abnormal through hole361for receiving a button37which is biased by a spring372and secured at fore end by a fixed plate371in the abnormal through hole361to prevent the inner and the outer disk31and32from rotation and a second sleeve322extended downward from an outer periphery for connecting itself to the upper end of the rear legs20each of which has a coupling seat24secured to a middle inner side. Each of the coupling seat24has a stop rod241and an axial rod242for rotatably securing a spare support25which has a long portion251toward the ground when the legs10and20are collapsed and a short portion252engageable with the stop rod241(as shown inFIGS. 2,3,4and5).

The chair seat40(as shown inFIGS. 1 and 2) has a pair of lateral walls41each of which has a through hole42in rear portion, a ring guide45on fore outer portion, a guide rod451inside the ring guide45, a guide plate452above the guide rod451, a lug46on an underside of the rear portion, a protudent triangular plate47on a top of the fore edge (as shown in FIGS.17and18), and a horizontal U-shaped inlaid slit43centrally formed in an upper surface of the seat40for securing a central upright support44which has a rectangular plate441on bottom anchored within the U-shaped inlaid slit43.

The chair back50has a pair of hollow interior lateral walls each having an aligned through hole53above lower end engaged with the through holes42of the chair seat40and rotalably connected by two pairs of fasteners51each of which includes a pair of elastic hooks52at fore end (as shown inFIGS. 1,2and18) and a plurality of positioning grooves54on the back side of the chair back50.

The two rotary positioning joints60respectively and rotatably secured to the ring guides45of the chair seat40by a pair axial rod61, and each has a rectangular tube62including a longitudinal guide projected downward through the body to slidingly sleeve onto the upper portion of the fore legs10and attached on the sliding bars15, a positioning handle63pivoted to an outer surface of each of the rotary positioning joints60by an axial pin631and biased by a spring633, a pair of check rods632connected to the upper end of the positioning handle63. The check rods632have their forward end stopped against one of the shoulders141of the fore legs10, an opening64in the lower portion of each of the rotary positioning joints60including a stop edge to limit the movement of the guide rod451of the chair seat40. This arrangement aims to provide a relative rotation angle to the chair seat40and an outer cap66secured to the outer side of each of the rotary positioning joints60by screws65. The outer caps66each has an extension661covering the outer surface of the rectangular tube62(as shown inFIGS. 1,2,3,14and15).

Referring toFIGS. 2,16,18,19and20, the angle adjustment device70comprises a rectangular plate71pivoted to a lug on the chair back50by an axial pin72. The plate71has a pair of side walls each including a bevel upper edge73and a concave lower edge74, a circular ring75centrally formed on an inner surface abutting the upper edge for anchoring one end of a spring76which has another end stopped against the chair back50for providing resilience to the rectangular plate71and an inverse U-shaped rod77having a pair of transverse ends771respectively engaged into the lugs46under the chair seat40, a transverse top being selectively engaged with one of the positioning groves54and the lateral portions confined by the concave lower edges74from moving outside of the plate71. If one pulls the lower end of the rectangular plate71outward, the lower portion of the plate71will leave the chair back50so as to set the inverse U-shaped rod77free to engage within any other positioning groove54to adjust the angle of elevation for the chair back50. Once the adjustment of the angle of elevation is achieved, release the rectangular plate71which will move back to its original position due to the resilience of the spring76.

Referring toFIGS. 2 and 16, a pair of symmetrically arranged side support plates81each has a clipping plate811including a rectangular hole in the center engaged with the protrudent triangular plates47of the chair seat40respectively and a pair of aligned rectangular through holes813spacedly formed under upper edge for engaging within a pair of hooked connecters82under the small platform80. The lateral edges of the small platform have a plurality of retaining slots83which are able to hold a pair of elastic inlaid blocks851under a large platform85which can be slid to and fro on the small platform80. Due to that the large platform85is made of plastic material, and the inlaid851blocks are elastic.

Referring toFIGS. 1,20and24, a foot rest86is positioned under the chair seat40through a pair of connection tubes861which insert into a pair of sleeves48beneath the chair seat40and releasably secured by bolts481. So that the foot rest86is vertically adjustable. An inverse U-shaped collet862in cooperation with a catch863are formed under the lower end of the foot rest86which are provided to releasably clip the second stretcher21of the rear legs20when the legs20are collapsed in order to temporarily fix the chair seat40.

Referring toFIGS. 1,10,11and12, the pair of drag devices90are respectively disposed into the two fore legs10and each has a box91secured to a lower portion of the fore legs10by rivets911, an upper stopper92inserted into a through hole16of the fore legs10and confined within a movable guide95which is connected to an underside of a sliding plate951, a lower stopper93inserted into the box91via a through hole17of the fore legs10biased by a spring931, another spring96biased the top of the sliding plate951and a linking-up cord94having a lower end connected to the sliding plate951, an upper end connected to the small protrusion324of the outer disk32and a wrapper941stopped against the stop plate35(as shown in FIG.6). The upper and lower stoppers92and93are normally protruded to outside of the fore legs10. When the inner disk31and the outer disk32of the circular joints30are rotated relatively, the movable guides95are lifted up to force the upper stopper92to move inside of the fore legs10in order to permit the rotary positioning joints60together with the chair seat40descending to the lower stopper93(as shown in FIG.13). Referring toFIGS. 3,4and5, when the fore legs10and the rear legs20are stretched and automatically fixed by the pair of circular joints30, the chair seat40is at an uppermost position. If tries to descend the chair seat40or to collapse the legs10and20, press simultaneously the positioning handles63of the rotary positioning joints60, the check rods632are actuated to leave the shoulders141of the fore legs10so as to permit the chair seat40descending to next shoulders141. Then release the handle handles63, the check rods632will automatically check on the next shoulders141to stop the chair seat40. Because of that the longitudinal guides of the rotary positioning joints60have the some curve as that of the fore legs10, the angle of elevation of the chair back50is kept unchanged. If ascends the chair seat40, it is no need to press the positioning handles63but just moves the chair seat upward, the check rods632will automatically slide along the inclined surface14and check into the upper shoulders141of the fore legs10.

Referring toFIGS. 5,6,7,8,9,21and22, when the chair seat40descends to the upper stoppers92, simultaneously press the buttons37of the circular joints30to force the fixed plates371moving inward to take apart from the abnormal holes361and move to other end of the arcuate guides36. So that the inner desks31and the out disks32of the circular joints30can be able to rotate relatively to readily collapse the fore and rear legs10and20. The rotation of the outer disks32draws the linking-up cords94which lift the movable guides95upward that force the upper stoppers92moving into the fore legs10. Therefore, the rotary positioning joints60can be able to descend to the lowermost position and stop by the lower stoppers93. Meanwhile, the guide rods451of the ring guides41can slide out of the outlets152of the guide grooves151. But the guide plates452still remain outside of the guide grooves151to prevent the chair seat40from taking apart.

Referring toFIGS. 24 and 25, when the legs10and20are collapsed, put the rear legs20on the ground and the collet862and the catch863of the foot rest86clip the second stretcher21of the rear legs20. The chair seat40together with the chair back50are at center position. This time, the high chair of the present invention becomes a cradle for the child and can be able to swing to and fro to cheer up the child. If stops the swinging, and pulls the spare support25rearward, its short portion252will be checked by the stop rod241and its long portion251will stop against the ground. So that the chair becomes a stable bed for the child.

If props the chair again, stretches the fore and rear legs10and20, the buttons37will move from the arcuate guides36to the abnormal holes361and the fixed plates371will automatically anchor in the abnormal holes361due to resilience of the springs372. Then puts the guide rods451of the chair seat40into the guide grooves151via the outlets152to facilitate the vertical adjustment of the chair seat40until that the check rods632stop against the appropriate shoulders141of the fore legs10.

Referring toFIG. 17, which shows an alternate central upright support44′ to replace the original central upright support44and which is not anchored in the horizontal U-shaped inlaid slit43. But has an aligned rectangular through hole82adjacent upper end to retain the hooked connector82from a center of the underside of the small platform80. This small modification has also the function of protecting the child.

Note that the specification relating to the above embodiment should be construed as exemplary rather than as limitative of the present invention, with many variations and modifications being readily attainable by a person of average skill in the art without departing from the spirit or scope thereof as defined by the appended claims and their legal equivalents.