Patent Description:
A stroller is a tool used by parents to carry babies or children when they go shopping. In general, a seat of a conventional stroller is detachable to facilitate storage or transportation. However, a detachable structure of the conventional seat is complicated and a user usually needs to use both hands to remove the seat.

<CIT> describes a child car seat with means for quick removal. For this purpose, a plate is arranged on the frame of a stroller. Slidably moveable sets and an operating lever are mounted on the plate. A rotating disc is arranged below the plate. The operating lever controls a rotation of the rotating disc. The amount of movement of the rotating disc adapts to the slidably moveable sets, such that a telescopic movement of the slidably moveable sets is controlled by the rotation of the rotating disc. For this purpose, the rotating disc is equipped with protruding stops each comprising a second inclined surface, pushing against a first inclined surface at the bottom side of a sliding element of the slidably moveable sets.

The present invention aims at providing a stroller with a seat capable of being detached conveniently, thereby resolving the aforesaid problems.

This is achieved by a stroller according to claim <NUM>. The dependent claims pertain to corresponding further developments and improvements.

As will be seen more clearly from the detailed description following below, the claimed stroller includes a frame, a seat fixing base and a seat. The seat fixing base is disposed on the frame. The seat fixing base has an engaging structure. The seat includes an unlock button and a plurality of engaging members. The unlock button abuts against the engaging members. The engaging members engage with the engaging structure to restrain the seat on the seat fixing base. When the unlock button is pressed, the unlock button drives the engaging members to disengage from the engaging structure, such that the seat is able to be detached from the seat fixing base.

Preferably, the engaging structure is a ring-shaped recess and the engaging members engage with the ring-shaped recess to rotatably restrain the seat on the seat fixing base.

Preferably, the seat further includes a plurality of first elastic members and a pillar, the engaging members surround the pillar, and opposite ends of each of the first elastic members abut against a corresponding one of the engaging members and the pillar respectively.

Preferably, the seat fixing base has a protrusion and the pillar has a groove. When the seat is disposed on the seat fixing base, the protrusion is inserted into the groove.

Preferably, the unlock button has a guiding groove, the pillar has a guiding portion, and the guiding portion is inserted into the guiding groove.

Preferably, the unlock button has a first inclined surface, each of the engaging members has a second inclined surface, and the first inclined surface abuts against the second inclined surface of each of the engaging members. When the unlock button is pressed, the first inclined surface pushes the second inclined surface of each of the engaging members to drive each of the engaging members to disengage from the engaging structure.

Preferably, the seat fixing base has two positioning recesses and the seat further includes a positioning member. When the positioning member engages with one of the two positioning recesses, the seat faces a front direction of the stroller. When the positioning member engages with the other one of the two positioning recesses, the seat faces a rear direction of the stroller.

Preferably, the seat further includes a second elastic member and opposite ends of the second elastic member abut against the positioning member and the seat.

Preferably, the seat further includes a webbing and the webbing is disposed on an upper surface of the seat.

Preferably, a moving direction of each of the engaging members is perpendicular to a pressing direction of the unlock button.

As mentioned in the above, the frame of the invention is equipped with the seat fixing base with the engaging structure. When the engaging members of the seat engage with the engaging structure of the seat fixing base, the seat is restrained on the seat fixing base. To detach the seat, a user may press the unlock button by one hand. When the unlock button is pressed, the unlock button drives the engaging members to disengage from the engaging structure, such that the seat is able to be detached from the seat fixing base. Furthermore, the invention may dispose the webbing on the upper surface of the seat. To detach the seat, the user may press the unlock button of the seat by a thumb and pull the webbing upward by other fingers, so as to detach the seat from the seat fixing base. Accordingly, the user may detach the seat by one hand. The operation is convenient and the structure is simple.

Referring to <FIG>, <FIG> is a perspective view illustrating a stroller <NUM> according to an embodiment of the invention, <FIG> is a perspective view illustrating the stroller <NUM> shown in <FIG> without a seat <NUM>, <FIG> is a perspective view illustrating the seat <NUM> shown in <FIG> from another viewing angle, and <FIG> is a sectional view illustrating an assembly of the seat <NUM> and a seat fixing base <NUM>.

As shown in <FIG> and <FIG>, the stroller <NUM> includes a frame <NUM>, a seat fixing base <NUM> and a seat <NUM>. The seat fixing base <NUM> is disposed on the frame <NUM> and the seat <NUM> is detachably disposed on the seat fixing base <NUM>. As shown in <FIG> and <FIG>, the seat fixing base <NUM> has an engaging structure <NUM>. As shown in <FIG>, <FIG> and <FIG>, the seat <NUM> includes an unlock button <NUM> and a plurality of engaging members <NUM>, wherein the unlock button <NUM> abuts against the engaging members <NUM>. In this embodiment, the seat <NUM> may include four engaging members <NUM>, but the invention is not so limited. The number of the engaging members <NUM> may be determined according to practical applications.

As shown in <FIG>, when the seat <NUM> is disposed on the seat fixing base <NUM>, the engaging members <NUM> engage with the engaging structure <NUM> to restrain the seat <NUM> on the seat fixing base <NUM>. When a user wants to detach the seat <NUM>, the user may press the unlock button <NUM> in a direction of an arrow A1. When the unlock button <NUM> is pressed, the unlock button <NUM> drives the engaging members <NUM> to move in a direction of an arrow A2. At this time, the engaging members <NUM> disengage from the engaging structure <NUM>, such that the seat <NUM> is able to be detached from the seat fixing base <NUM>. In this embodiment, a moving direction of each of the engaging members <NUM> (i.e. the direction of the arrow A2) is perpendicular to a pressing direction of the unlock button <NUM> (i.e. the direction of the arrow A1), but the invention is not so limited.

As shown in <FIG>, the engaging structure <NUM> of the seat fixing base <NUM> is a ring-shaped recess. Thus, the engaging members <NUM> engage with the ring-shaped recess (i.e. the engaging structure <NUM>) to rotatably restrain the seat <NUM> on the seat fixing base <NUM>. For further explanation, the engaging members <NUM> may freely move within the ring-shaped recess, such that the seat <NUM> may rotate <NUM> degrees with respect to the seat fixing base <NUM>. At the same time, since the engaging members <NUM> engage with the engaging structure <NUM>, the seat <NUM> is restrained on the seat fixing base <NUM> while rotating, such that the seat <NUM> will rotate more stable.

As shown in <FIG>, the seat <NUM> may further include a plurality of first elastic members <NUM> and a pillar <NUM>. As shown in <FIG>, the engaging members <NUM> surround the pillar <NUM>. As shown in <FIG>, opposite ends of each of the first elastic members <NUM> abut against a corresponding one of the engaging members <NUM> and the pillar <NUM> respectively. When the unlock button <NUM> is pressed to drive the engaging members <NUM> to move in the direction of the arrow A2, each of the engaging members <NUM> compresses the first elastic member <NUM>. When the unlock button <NUM> is released, an elastic force generated by the first elastic member <NUM> pushes the engaging member <NUM>, such that the engaging member <NUM> returns in a reversed direction of the arrow A2. At the same time, the engaging member <NUM> pushes the unlock button <NUM>, such that the unlock button <NUM> returns in a reversed direction of the arrow A1.

As shown in <FIG>, the unlock button <NUM> may have a first inclined surface <NUM> and each of the engaging members <NUM> may have a second inclined surface <NUM>, wherein the first inclined surface <NUM> abuts against the second inclined surface <NUM> of each of the engaging members <NUM>. Thus, when the unlock button <NUM> is pressed, the first inclined surface <NUM> of the unlock button <NUM> pushes the second inclined surface <NUM> of each of the engaging members <NUM>, so as to drive each of the engaging members <NUM> to move in the direction of the arrow A2 to disengage from the engaging structure <NUM> of the seat fixing base <NUM>. When the unlock button <NUM> is released, the second inclined surface <NUM> of each of the engaging members <NUM> pushes the first inclined surface <NUM> of the unlock button <NUM>, such that the unlock button <NUM> returns in the direction of the arrow A1.

As shown in <FIG>, an inner side of the unlock button <NUM> may have a guiding groove <NUM> and a top of the pillar <NUM> may have a guiding portion <NUM>. The guiding portion <NUM> is inserted into the guiding groove <NUM>, such that the unlock button <NUM> may keep moving linearly with respect to the pillar <NUM>.

As shown in <FIG>, the seat fixing base <NUM> may have a protrusion <NUM> and an outer side of the pillar <NUM> of the seat <NUM> may have a groove <NUM>. A user may align the groove <NUM> of the seat <NUM> with the protrusion <NUM> of the seat fixing base <NUM> to dispose the seat <NUM> on the seat fixing base <NUM>. When the seat <NUM> is disposed on the seat fixing base <NUM>, the protrusion <NUM> is inserted into the groove <NUM>. Thus, the user may align the seat <NUM> with the seat fixing base <NUM> by the cooperation between the protrusion <NUM> and the groove <NUM>, so as to facilitate the installation of the seat <NUM>.

Referring to <FIG> is a perspective view illustrating the seat <NUM> according to another embodiment of the invention. As shown in <FIG>, the seat <NUM> may further include a webbing <NUM>, wherein the webbing <NUM> is disposed on an upper surface of the seat <NUM>. To detach the seat <NUM>, the user may press the unlock button <NUM> of the seat <NUM> by a thumb and pull the webbing <NUM> upward by other fingers, so as to detach the seat <NUM> from the aforesaid seat fixing base <NUM>. Accordingly, the user may detach the seat <NUM> by one hand. The operation is convenient and the structure is simple.

Referring to <FIG>, <FIG> is a perspective view illustrating the assembly of the seat <NUM> and the seat fixing base <NUM> from another viewing angle, <FIG> is a perspective view illustrating the seat fixing base <NUM>, <FIG> is a sectional view illustrating the assembly of the seat <NUM> and the seat fixing base <NUM>, and <FIG> is a perspective view illustrating the seat <NUM> facing a rear direction of the stroller <NUM>.

As shown in <FIG>, the seat fixing base <NUM> may have two positioning recesses 124a, 124b, and the seat <NUM> may further include a positioning member <NUM> and a second elastic member <NUM>. The positioning member <NUM> is disposed on a bottom of the base <NUM>. Opposite ends of the second elastic member <NUM> abut against the positioning member <NUM> and the seat <NUM>. When the positioning member <NUM> engages with one of the two positioning recesses 124a, 124b, the seat <NUM> faces a front direction of the stroller <NUM> (as shown in <FIG>). When the positioning member <NUM> engages with the other one of the two positioning recesses 124a, 124b, the seat <NUM> faces a rear direction of the stroller <NUM> (as shown in <FIG>). In other words, the positioning member <NUM> is configured to cooperate with the two positioning recesses 124a, 124b to orient the seat <NUM> to face the front direction of the stroller <NUM> or orient the seat <NUM> to face the rear direction of the stroller <NUM>. In this embodiment, when the positioning member <NUM> engages with the positioning recess 124a, the seat <NUM> faces the front direction of the stroller <NUM>. When the positioning member <NUM> engages with the positioning recess 124b, the seat <NUM> faces the rear direction of the stroller <NUM>. It should be noted that the invention may adjust the positions of the two positioning recesses 124a, 124b to orient the seat <NUM> to face other directions of the stroller <NUM>, e.g. orient the seat <NUM> to face a left direction of the stroller <NUM> or orient the seat <NUM> to face a right direction of the stroller <NUM>. Needless to say, in addition to the two positioning recesses 124a, 124b, the invention may further add other positioning recesses to the seat fixing base <NUM>, such that the seat <NUM> may face more different directions of the stroller <NUM>.

As shown in <FIG>, the positioning member <NUM> engages with the positioning recess 124a, such that the seat <NUM> cannot rotate with respect to the seat fixing base <NUM>. The user may press the positioning member <NUM> in a direction of an arrow A3, such that the positioning member <NUM> disengages from the positioning recess 124a. At this time, the user may rotate the seat <NUM> to adjust an orientation of the seat <NUM>. When the positioning member <NUM> is pressed to move in the direction of the arrow A3, the positioning member <NUM> compresses the second elastic member <NUM>. When the positioning member <NUM> is released and the positioning member <NUM> is aligned with the positioning recess 124a or 124b, an elastic force generated by the second elastic member <NUM> pushes the positioning member <NUM>, such that the positioning member <NUM> returns in a reversed direction of the arrow A3 and then the positioning member <NUM> engages with the positioning recess 124a or 124b.

Claim 1:
A stroller (<NUM>), comprising:
a frame (<NUM>);
a seat fixing base (<NUM>) disposed on the frame (<NUM>), the seat fixing base (<NUM>) having an engaging structure (<NUM>); and
a seat (<NUM>) comprising an unlock button (<NUM>) and a plurality of engaging members (<NUM>), the unlock button (<NUM>) abutting against the engaging members (<NUM>);
wherein the engaging members (<NUM>) engage with the engaging structure (<NUM>) to restrain the seat (<NUM>) on the seat fixing base (<NUM>); when the unlock button (<NUM>) is pressed, the unlock button (<NUM>) drives the engaging members (<NUM>) to disengage from the engaging structure (<NUM>), such that the seat (<NUM>) is able to be detached from the seat fixing base (<NUM>).