Baby walker

A baby walker includes an upper part, a lower part having wheels disposed thereto and two pairs of crosswise connected links connected between the upper part and the lower part, a seat member having a back member received therein and securely connected to the upper part. The upper member has two apertures defined diametrically opposite to each other and two first hooks formed to an underside of a periphery defining each of the apertures. The back member has two second hooks extending therefrom so as to be engaged with the first hooks.

BACKGROUND OF THE INVENTION 
1. Field of the Invention 
The present invention relates to a baby walker and, more particularly, to a 
baby walker having a back member securely connected thereto so as to 
provide a better support for a baby in the baby walker. 
2. Brief Description of the Prior Art 
Referring to FIGS. 1 and 2, conventional baby walkers include an upper part 
90 and a lower part 900 which has wheels 901 disposed to an underside 
thereof and an adjustable device 902 comprising two pairs of crosswise 
linked rods which are connected between the upper part 90 and the lower 
part 900. Each of the upper and the lower part 90, 900 is a substantially 
ring-shaped member and a seat member 80 is disposed to a center of the 
upper member 90 so that a baby may be supported by the seat member 80 with 
his/her feet in contact with the ground. In order to provide a support of 
the neck and head of the baby in case of falling rearwardly, a back member 
82 is connected to a rear top edge of the seat member 80. Generally, the 
seat member 80 is made of a fabric 81 and has an extending portion 83 to 
securely connect to a bolt 921 of the upper part 90. A plurality of bolts 
85 extend downwardly from a rear periphery of the seat member 80 so as to 
be inserted into holes 93 defined through the upper part 90 and engaged 
with nuts 86 so as to be positioned to the upper part 90. The back member 
82 includes a board 821 made of foam material and enclosed by a coating 
which is sewed integrally with the seat member 80. It is experienced that 
the back member 82 cannot provide a firm and satisfactory supporting 
function because an engagement between the seat member 80, the back member 
82 and the upper part 90 is not strong enough. 
The present invention intends to provide an improved baby walker having a 
firm engagement to connect the seat member and the back member to an upper 
part thereof so as to mitigate and/or obviate the above-mentioned 
problems. 
SUMMARY OF THE INVENTION 
The present invention provides a baby walker which comprises an upper part 
having an opening defined therethrough and lower part being a ring member 
which has a plurality of wheels rotatably disposed to an underside 
thereof. Two pairs of crosswise connected links are adjustably connected 
between the upper and lower members. A groove is defined in an upper 
surface thereof so as to form a collar member which defines the opening. 
The collar member has an arc portion having a raised upper surface so as 
to define two apertures between an upper surface of the collar member and 
the raised upper surface of the arc portion. The raised upper surface has 
two first hooks respectively formed to an underside of two distal ends 
thereof which respectively define the two apertures. 
A back member has two second hooks extending from two lower ends thereof so 
as to be inserted through the two apertures and engaged with the two first 
hooks. 
A seat member has two holes defined in a lower portion thereof and an 
envelope portion extending upwardly therefrom which has a lower periphery 
so as to securely connect to the collar member. The back member is 
received in the envelope portion. 
It is an object of the present invention to provide a baby walker having a 
back member which is firmly connected to the baby walker. 
It is another object of the present invention to provide a baby walker 
which provide a good support to the neck and the head of a baby seated 
therein. 
Other objects, advantages, and novel features of the invention will become 
more apparent from the following detailed description when taken in 
conjunction with the accompanying drawings.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT 
Referring to the drawings and initially to FIG. 3, a baby walker in 
accordance with the present invention generally includes an upper part 10 
having an opening 112 defined therethrough, a lower part 12 being a ring 
member and having a plurality of wheels 121 rotatably disposed to an 
underside thereof, and two pairs of crosswise connected links 13 
adjustably connected between the upper and lower members 10, 12. Two guide 
rods 131 are disposed parallelly within the lower part 12 and each of the 
crosswise connected links 13 has a lower end slidably mounted to the 
corresponding guide rod 131 so that a distance between the upper and the 
lower part 10, 12 can be adjusted by operating the two pairs of crosswise 
connected links 13. 
The upper part 10 has a groove 14 defined in an upper surface thereof so as 
to form a collar member 11 which defines the opening 112. The collar 
member 11 has an arc portion 114 which has a raised upper surface so as to 
define two apertures 116 between an upper surface of the collar member 11 
and the raised upper surface of the arc portion 114. The two apertures 116 
are located diametrically opposite to each other on the collar member 11. 
Referring to FIG. 4, two first hooks 117 are respectively formed in an 
underside of two distal ends of the raised upper surface, wherein the two 
distal ends respectively define the two apertures 116. The upper surface 
of the collar member 11 has two slots 118 defined therein and two recesses 
119 are defined in the upper surface of the collar member 11, each 
communicating with a respective one of the slots 118. The collar member 11 
further has a plurality of protrusions 142 extending laterally and 
outwardly therefrom within the groove 14, wherein each of the protrusions 
142 has an enlarged head 144. A bottom defining the groove 14 has a 
plurality of holes 141 defined therethrough and each of the holes 141 is 
located corresponding to a respective one of the protrusions 142. 
A back member 30 has two second hooks 32 extending from two lower distal 
ends thereof and which are sized to be inserted through the two apertures 
116 to engage with the two first hooks 117. The back member 30 further has 
two sets of L-shaped plates 331 extending downwardly from an underside 
thereof. Referring to FIG. 5, each of the two sets of L-shaped plates 331 
is inserted downwardly into the recesses 19 and pushed toward the arc 
portion 114 to be stopped by an underside of the collar member 11 such 
that the back member 30 is firmly connected to the upper part 10. 
A seat member 20 has two holes 201 defined in a lower portion thereof so as 
to allow two legs of a baby to be inserted therethrough and an envelope 
portion 21 extending upwardly therefrom has a lower periphery having a 
plurality of ring members 22 attached thereto. Referring to FIGS. 6 and 7, 
the back member 30 is received in the envelope portion 21 and the envelope 
portion 21 is securely connected to the collar member 11 by securely 
mounting the ring members 22 to the protrusions 142. When a baby (not 
shown) is not seated in the seat member 20, the relationship between each 
of ring members 22 and the protrusions 142 are show as the left side of 
the FIG. 7. When the baby is seated in the seat member 20, the ring 
members 22 will be pulled upwardly so as to securely engage with the 
protrusions 142 as shown in the right side of FIG. 7. 
Although the invention has been explained in relation to its preferred 
embodiment, it is to be understood that many other possible modifications 
and variations can be made without departing from the spirit and scope of 
the invention as hereinafter claimed.