KR20150118640A - Vehicle device for child - Google Patents

Abstract

The present invention relates to a riding device for a child which can change a shape thereof according to growth of a child. The riding device for a child according to an embodiment of the present invention comprises: a frame extended from a front side to a rear side to support a front wheel and a rear wheel; a seat unit which is loaded on the frame, is restrained on the frame to change a position thereof between the front side and the rear side, and comprises a first portion and a second portion separated from the first portion; a side guide unit which is disposed on one side of the frame, and comprises a first guide unit on which the first portion of the seat unit is restrained to guide the seat unit to change the position of the seat unit between the front side and the rear side, and a second guide unit to guide the first portion at one or more points of the first guide unit to change the position of the first portion in one direction between a tangential direction of a moving path of the first portion and a direction perpendicular to the ground; and a rotational shaft to restrain rotation of the second portion of the seat unit to bend the seat unit to the rear side when the first portion of the seat unit changes the position thereof at the one or more points of the first guide unit along the second guide unit.

Description

Vehicle device for child

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a passenger-carrying apparatus for children, and more particularly, to a passenger-carrying apparatus that can be modified from infant to child.

Infants or children (hereinafter collectively referred to as infants) between one and eight years of age generally use strollers to safely move infants on foot when they go out. Also, to give infants the exercise to raise the leg strength in line with their growth, riding toys such as tricycles or model cars are needed. Generally, there are two demands for safe movement means and exercise effect for infants over 2 years old at the same time. However, conventionally, there is no example in which a passenger device that simultaneously satisfies these two requirements is commercialized. In addition, even though there are two types of combinational methods, namely, the means of movement and the effect of exercise, there is a problem that the use life is short or the two requirements can not be completely satisfied because the child is not adaptable to the change in height.

Baby strollers or riding toys need to control the angle of the backrest of the seat in preparation for a situation in which the infant is asleep while boarding and while the infant is asleep. For example, the backrest should be raised when the child is awake or active, and the backrest of the seat should be turned back so that the child can sleep well when he is sleeping. However, it is difficult to find an example in which a configuration in which a backrest of a seat is turned back is commercialized in a bicycle seat applied to a conventional tricycle.

Therefore, the technical problem to be solved by the present invention is to adapt to the change of the kidney according to the growth of the infant, so that the use period is long, and not only as a riding toy, but also induces a safe sitting at the time of boarding like a baby carriage, The backrest angle of the seat can be easily controlled in preparation for a situation where the child is sleeping.

According to an aspect of the present invention, there is provided an infant < Desc / Clms Page number 4 > passenger device comprising: a frame extending from a front side to a rear side to support a front wheel and a rear wheel; A seat portion mounted on the frame, the seat portion being constrained to the frame and displaced between the front portion and the rear portion, the seat portion including a first portion and a second portion spaced from the first portion; A first guide portion provided on one side of the frame and guiding the first portion of the seat portion to be restrained so that the seat portion is displaced between a front side and a rear side; And a second guide portion for guiding the first portion to be displaced in one direction between a tangential direction of a locus of motion of the first portion of the seat portion and a direction perpendicular to the ground; And a second guide portion that restrains rotation of the second portion of the seat portion such that the seat portion is tilted backward when the first portion of the seat portion is displaced along the second guide portion at the at least one point of the first guide portion, . ≪ / RTI >

In some embodiments, the seat portion is slidingly displaced on the frame. Further, the first portion and the second portion of the seat portion may not be arranged in a single line from the ground but may be eccentrically positioned.

The first portion of the seat portion includes a first projection for engagement with the frame at a location in contact with the frame. The first guiding portion or the second guiding portion of the side guiding portion may include a trench rail or a through slit which is engaged with the first protruding portion.

In one embodiment, the first projection is provided by a rod member coupled through the first portion of the seat portion, the rod member having a rod portion passing through a first portion of the seat portion, So as to be coupled to each other. Further, in another embodiment, the rod member may be resiliently coupled to the first portion to enable elastic adjustment of the depth through which the rod portion penetrates.

At least one of the first guide portion and the second guide portion may include two or more stopper patterns including an irregular pattern, a wavy pattern or a groove pattern in an inner region where the first projection contacts. The child car can further include a rotation axis guide portion provided between the front and rear sides of the frame and guiding the rotation axis to slide together while the first portion of the seat portion slides along the first guide portion have.

The rotation axis is provided by a second projection formed at a position in contact with the frame of the second portion of the seat portion, and the second projection can be constrained to the rotation axis guide portion. In one embodiment, the second projection includes a rod member coupled through the second portion of the seat portion, wherein the rod member includes a rod portion extending through a second portion of the seat portion, And the head portion may be coupled with the through-hole.

In some embodiments, the locus of the first portion displaced along the first guide portion and the locus of the second portion displaced along the guide axis guide may be parallel to each other such that the seat portion is slid on the frame. The first guide portion may be linear, and the second guide portion may be an arc centered on the rotation axis.

According to the embodiments of the present invention, a side guide portion is provided on a frame extending from the front side to the rear side to support the front wheel and the rear wheel, a first portion of the seat portion is constrained to the side guide portion and displaced, And the seat portion can be displaced and tilted on the frame by rotating the portion while being restrained by the pivotal shaft. Accordingly, the infant passenger device is adaptable to the change in height according to the growth of the infant, so that the infant is long in use, and not only as a rider, but also induces a safe sitting at the time of infant riding, such as a baby carriage, The backrest angle of the seat portion can be easily controlled.

Figs. 1A to 1C are perspective views showing an infant passenger device having a seat portion capable of displacement and angle adjustment on a frame according to a temporal example of the present invention.
FIG. 2A is a side view showing a seat portion according to an embodiment of the present invention, and FIG. 2B is a rear view of a seat portion. FIG.
FIG. 3A shows a side guide portion and a rotation shaft of the frame according to an embodiment of the present invention, FIG. 3B shows a tilting operation of the seat portion by the interaction of the side guide portion and the rotation shaft, FIGS. 3C and 3D The side guide according to the other embodiments.
4A and 4B illustrate a side guide portion and a pivot axis guide portion of the frame according to another embodiment of the present invention, respectively, illustrating displacement and tilting of the seat portion.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

The embodiments of the present invention are described in order to more fully explain the present invention to those skilled in the art, and the following embodiments may be modified in various other forms, The present invention is not limited to the embodiment. Rather, these embodiments are provided so that this disclosure will be more faithful and complete, and will fully convey the scope of the invention to those skilled in the art.

In the following drawings, thickness and size of each layer are exaggerated for convenience and clarity of description, and the same reference numerals denote the same elements in the drawings. As used herein, the term "and / or" includes any and all combinations of any of the listed items.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the singular forms "a," "an," and "the" include singular forms unless the context clearly dictates otherwise. Also, " comprise "and / or" comprising "when used herein should be interpreted as specifying the presence of stated shapes, numbers, steps, operations, elements, elements, and / And does not preclude the presence or addition of one or more other features, integers, operations, elements, elements, and / or groups.

Although the terms first, second, etc. are used herein to describe various elements, components, regions, layers and / or portions, these members, components, regions, layers and / It is obvious that no. These terms are only used to distinguish one member, component, region, layer or section from another region, layer or section. Thus, a first member, component, region, layer or section described below may refer to a second member, component, region, layer or section without departing from the teachings of the present invention.

1A to 1C are perspective views showing an infant passenger 1 having a seat portion 8 capable of displacement and angle adjustment on a frame 10 according to a temporal example of the present invention.

Referring to Fig. 1A, the child passenger 1 has a frame 10 extending from the front side to the rear side. The front wheel 5_1 and the rear wheel 5_2 can be coupled to the frame 10 and supported. For example, the front wheel 5_1 may be coupled to the handle shaft 6S rotatably coupled to the frame 10. [ The rear wheel 5_2 can be fixed via the rear wheel support 5S fixed to the frame 10. [ In another embodiment, the rear wheel supporter 5S may be combined with the frame so as to be integrated with the frame or foldable in a separate configuration, and the present invention is not limited to these embodiments. The number of front wheels 5_1 and rear wheels 5_2 is appropriately selected so that the infant passenger 1 can be a two-wheeled or three-wheeled bicycle, or a three-wheeled or four-wheeled baby carriage. The front wheel 5_1 may include a pedal 5P.

The infant passenger 1 can be operated not only by the infant driving the pedal 5P directly but also by pushing the handle 7 behind the infant. The handle 7 is fixed by the handle shaft 7S and is coupled to the handle shaft 6S through a link member or a wire (not shown) so that the carer can directly steer the child passenger 1 directly.

On the frame 10, a seat portion 8 for riding an infant is mounted. The seat portion 8 can be restrained by the frame 10 and moved backward or backward as shown by the arrow A to return to the original position. The movement of the seat portion 8 will be described later in detail.

The seat portion 8 shown in Fig. 1A is in a state in which the seat portion 8 has moved to the maximum rearward position on the frame 10 so as to secure a maximum distance from the front wheel 5_1. As shown by the arrow A, the seat portion 8 can be moved forward on the frame 10, and Fig. 1B shows a state in which the seat portion 8 has moved to the maximum toward the front side. The movement of the seat portion 8 is not a method of separating the seat portion 8 and the frame 10 and then moving the frame portion 10 on the frame 10 and then fixing the seat portion 8. When the seat portion 8 is fastened to the frame 10 Can be achieved in a sliding manner.

The seat portion 8 is displaced between the front wheel 5_1 and the rear wheel 5_2 side so that the distance between the seat portion 8 and the pedal 5P can be adjusted, It is possible to cope with the growth change of the infant on board the vehicle 8. For example, when the seat portion 8 is provided at the position shown in FIG. 1B, the child passenger 1 is suitable for a case where the child is young and has a small elongation, The infant passenger 1 is suitable for the case where the infant grows and has a large elongation. As described above, the child passenger 1 according to the embodiment of the present invention has an advantage that the use life is increased in response to a change in elongation according to a growth period of the infant by the displaceable seat portion 8. [

The sheet portion 8 is pivoted at a predetermined position on the frame 10 as shown by the arrow B in Fig. 1B, and the sheet portion 8 can be turned backward. Fig. 1C shows the seat portion 8 that has been folded backward. When the infant is asleep or is young, the infant passenger 1 should be able to rest in a stable and comfortable posture. According to one embodiment, the seat portion 8 is turned backward, . In one embodiment, the child passenger 1 may further include a footrest 5S to allow the infant to comfortably lie with the seat portion 8. [ The rotation mechanism of the seat portion 8 will be described later.

Fig. 2A is a side view showing the seat portion 8 according to an embodiment of the present invention, and Fig. 2B is a rear view of the seat portion 8. Fig.

Referring to FIG. 2A, the seat portion 8 may be composed of at least one piece. For example, the seat portion 8 includes a lower structure 8_1 constrained on the frame 8 and a superstructure 8_2 supported on the lower structure 8_1 to provide a hip support and / or a backrest . However, if it is an example, the seat portion 8 may be composed of a single body or consist of three or more parts. The seat portion 8 may further include a safety device such as a seat belt 9_1 and a safety belt 9_2.

The seat portion 8 includes two portions indicated by dotted lines, that is, a first portion 8_2a and a second portion 8_2b spaced from the first portion 8_2a. The first portion 8_2a and the second portion 8_2b are portions directly or indirectly coupled to the frame 10 for displacement and rotation of the seat portion 8 on the frame 10. To this end, the first portion 8_2a and the second portion 8_2b may have first and second projections for engagement with the frame 10 at a location in contact with the frame 10. Refers to the fact that a first portion 8_2a or a second portion 8_2b which is a part of the seat portion 8 is coupled to the frame 10 through the projection 10. " Directly " A separate member is applied to the first portion 8_2a or the second portion 8_2b which is a part of the seat portion 8 to be engaged and the first portion 8_2a and the second portion 8_2b are provided, The seat portion 8 shown in Figs. 2A and 2B discloses the rod members 8R_1 and 8R_2 as the projecting portions, and the seat portion 8R_1 8 are coupled to the frame 10 indirectly by the rod members 8R_1, 8R_2.

Although the above-described embodiment discloses a protrusion for directly or indirectly coupling the first portion 8_2a or the second portion 8_2b to the frame 10, conversely, the protrusion is formed in the frame, There may be a relative pattern that receives and constrains the protrusion.

The rod members 8R_1 and 8R_2 each penetrate the first portion 8_2a and the second portion 8_2b of the seat portion 8 and come into contact with the frame 10 to form the first portion 8_2a ) And the second portion 8_2b to the frame 10. Referring to FIG. 2B, the rod members 8R_1 and 8R_2 may have head portions H1 and H2 and rod portions R1 and R2, respectively, like bolts, And can be coupled through. These rod members 8R_1 and 8R_2 are illustrative and at least one of the first portion 8_2a and the second portion 8_2b of the seat portion 8 is integrally projected and directly joined with the frame 10 .

The rod members 8R_1 and 8R_2 shown in Fig. 2B can be resiliently fixed to the seat portion 8. Fig. For example, when the head portions H1 and H2 of the rod members 8R_1 and 8R_2 are pulled out, the penetrating rod portions R1 and R2 are retracted outward, and when the head portions H1 and H2 are again placed, (R1, R2) are elastically advanced to fix the seat portion (8) to the corresponding portion of the frame (10). Alternatively, a screw thread may be formed on the rod portions R1 and R2, and the retraction and advancement thereof may be achieved by rotating the head portions H1 and H2.

3A shows the side guide portion 11A and the pivot shaft 11S of the frame 10 according to the embodiment of the present invention and Fig.3B shows the side guide portion 11A and the pivot axis 11S And Fig. 3C and Fig. 3D show side guides 11B and 11C according to other embodiments.

Referring to Fig. 3B together with Fig. 3A, side guides 11A are formed on one side of the frame 10. Fig. A side guide portion having a symmetrical shape may also be provided on the opposite side not shown in Fig. The side guide portion 11A includes a first guide portion 11_1 and a second guide portion 11_2 connected to the first guide portion 11_1. The first guide portion 11_1 and the second guide portion 11_2 constrain the first portion 8R_1 of the seat portion 8 in Fig. 2A so that the first portion 8R_1 of the seat portion 8 is engaged with the frame 10 ).

The first guide portion 11_1 and the second guide portion 11_2 may include a trench rail or a through slit formed on one side of the frame 10. Fig. 3A shows guide portions 11_1 and 11_2 of trench-rail type. The trench rail may be provided by recessing a side portion 11S of the frame 10 by a predetermined depth or by forming two dam patterns 11d_1 and 11d_2 in the vertical direction as shown or a combination thereof . The protrusion of the seat portion 8 may further include an induction portion for retracting into the first guide portion 11_1. FIG. 3A discloses an induction portion formed in the first guide portion 11_1.

The first portion 8R_1 of the seat portion 8 can be restrained and displaced only along the inner region 11S defined by the dam patterns 11d_1 and 11d_2, that is, along the first guide portion 11_1. For example, one end (refer to R1 in Fig. 2B) of the rod member 8R_1 coupled to the first portion 8R_1 is constrained to move only in the inner region 11S by the dam patterns 11d_1 and 11d_2 . That is, the one end portion R1 of the rod member 8R_1 is displaced only along the first guide portion 11_1, and can not escape out of the first guide portion 11_1. Accordingly, the first portion 8R_1 of the seat portion 8 can be coupled to the frame 10.

A dotted line T1 indicates a trajectory of displacement of the first portion 8R_1 of the seat portion 8 by the first guide portion 11_1. 1A, one end R of the rod member 8R_1 joined to the first portion 8R_1 of the seat portion 8 when the seat portion 8 is on the rear side is indicated by a dotted line R1 It will be in the marked position. When the seat portion 8 is slid forward from the rear, one end R of the rod member 8R_1 will be in a position indicated by a dotted line R2. 1B when the one end R of the rod member 8R_1 is at the position of the dashed line R2. In this case, the distance between the pedal (see 5P in Fig. 1A) and the seat portion 8 is Minimized, and can be applied when the child's height is the smallest. The distance of the trajectory in the displacement of the first portion 8R_1 of the seat portion 8 may be, for example, within a range of 30 mm to 150 mm. Within this range, the infant passenger device will be able to cope with the change in the height of the infant on board.

As described above, when the first portion 8R_1 of the seat portion 8 is displaced by the first guide portion 11_1, the second portion 8R_1 of the seat portion 8 will also be displaced. When the rod member is coupled through the second portion 8R_2, one end R2 of the rod member 8R_2 may be displaced along the dotted line T2. The dotted lines RS and RP indicate the positions of the rod portions R2 of the rod members 8R_2 corresponding to the movement positions Ra and Rb of the other rod members 8R_1, respectively.

Although the first guide portion 11_1 shown in FIG. 3A is linear, the present invention is not limited thereto. For example, the first guide portion 11_1 may be curved convex or concave toward the upper side of the frame 10. In this case, the locus T1 may be convex or concave toward the upper side of the frame 10, and the first portion 8R_1 of the seat portion 8 will be displaced by drawing a curved trajectory between the front and rear sides.

The second guide portion 11_2 extends from the front side end portion 11X of the first guide portion 11_1 and the first portion 8R_1 of the seat portion 8 is connected to the rod member 8R_1, So as to be displaced. And the dotted line T2 represents another trajectory of the first portion 8R_1 of the seat portion 8 by the second guide portion 11_2. The locus of the dotted line T2 travels in one direction between the direction of the tangent line TL of the dotted line T1 at the front end of the first guide portion 11_1 and the direction perpendicular to the ground.

In one embodiment, the locus of the dotted line T2 may be an arc having a central angle of the angle &thetas; and a radius r about the pivot axis 11S. The angle [theta] may be, for example, in the range of 10 [deg.] To 35 [deg.], And the present invention is not limited thereto. The rotary shaft 11S may be a member directly or indirectly connected to the second portion 8R_2 of the seat portion 8. [ In one embodiment, the pivotal axis 11S may be the rod portion R2 of the rod member 8R_2 penetratingly connected to the second portion 8_2b of the seat portion 8.

The rotary shaft 11S may be provided with a suitable rotation guide member 11P so as to be fixed and rotated at a predetermined position. Fig. 3A illustrates, without limitation, an annular rotation guide member 11P. When the first portion 8R_1 of the seat portion 8 is displaced along the circular dotted line T2 along the second guide portion 11_2, the second portion 8R_2 of the seat portion 8 is rotated by the pivotal axis 11S, The seat portion 8 is turned backward by the back plate.

In another embodiment, the dotted line T2 may be a straight line having a limited length other than an arc, and the present invention is not limited thereto. The second guide portion 11_2 may have a trench pattern or a through slit so that the locus of the dotted line T2 can be defined. The second guide portion 11_2 shown in Fig. 3A illustrates a trench pattern in which the region 11S is recessed. In some embodiments, the second guide portion 11_2 is provided with a concavo-convex pattern or a wavy pattern as a stopper pattern on the surface thereof, so that the first portion 8R_1 of the seat portion 8, which moves along the second guide portion 11_2, A stepped stopping may be provided to provide a discontinuous folding angle in the seat portion 8. [ Alternatively, the second guide portion 11_2 may include a groove pattern as a stopper pattern, similar to the groove pattern of the first guide portion 11_1 described later.

Referring to FIG. 3C, the side guide portion 11B according to another embodiment may include a plurality of spaced grooves 11H formed in the inner region 11S of the first guide portion 11_1 as a stopper pattern. So that one end portion R1 of the rod member 8R_1 coupled to the first portion 8_2a of the seat portion 8 can be inserted into the grooves 11H. For example, when the rod member 8R_1 is elastically coupled to the first portion 8_2a of the seat portion 8 to pull the head H1 of the rod member 8R_1 out of the seat portion 8, One end of the rod portion R1 of the seat portion 11 is separated from the grooves 11H and the seat portion 8 can be freely displaced forward and rearward by restricting the first guide portion 11_1 on the frame 10. The guardian takes the infant's height and places the seat portion 8 at a position where the distance between the front wheel 5_1 and the seat portion 8 is appropriate, The rod member 8R_1 is resiliently restored and one end of the rod portion R1 of the rod member 8R_1 is inserted into one of the grooves 11H so that the seat portion 8 is moved It may become a locked state in which displacement is not achieved.

In another embodiment, the displacement of the first portion 8R_1 of the seat portion 8 moving along the first guide portion 11_1 with a concave-convex pattern or a wavy pattern instead of the same pattern as the grooves of the first guide portion 11_1 Lt; RTI ID = 0.0 > a < / RTI > Also, grooves, concavo-convex patterns or wavy patterns may be formed in the second guide portion 11_2 to provide a discontinuous folding angle.

In the above-described embodiment, the second guide portion 11_2 is extended to the front side end portion 11x of the first guide portion 11_1, but the embodiment of the present invention is not limited to this. For example, the number of the second guide portions 11_2 may be not one but plural, and two or more discrete points where the first portion 8R_1 of the seat portion 8 is displaced along the first guide portion 11_1 The second guide portion 11_2 may be provided. For example, referring to FIG. 3C, three second guide portions 11_2 may be disposed for each of a plurality of spaced grooves 11H formed in the inner region 11S of the first guide portion 11_1 .

3D, the first portion 8R_1 of the seat portion 8 is displaced along the first guide portion 11_1, and at each point, for example, the grooves 11H, The second portion 8R_2 of the seat portion 8 is rotated while being fixed by the rotation axis R2 at the position corresponding to each point so that the back plate of the seat portion 8 is bent backward . In some embodiments, grooves, concavo-convex patterns, or wavy patterns (not shown) are formed on the inner side wall of the rotation axis guide portion 12 so that the rod member R2 can rotate without displacement at each of the points, Lt; RTI ID = 0.0 > angles. ≪ / RTI >

4A and 4B illustrate a side guide portion 11C and a pivot axis guide portion 12 of the frame 10 according to another embodiment of the present invention and explain the displacement and swing motion of the seat portion 8, Fig.

Referring to FIG. 4B together with FIG. 4A, a side guide portion 11C may be formed on one side of the frame 10. FIG. The side guide portion 11C is the above-described side guide portion. Symmetrical side guides may also be provided on opposite sides not visible in FIG. 4A. The side guide portion 11C includes a first guide portion 11_1 (FIG. 3A) and a second guide portion 11_2 connected to the first guide portion 11_1. The first guide portion 11_1 and the second guide portion 11_2 constrain the first portion 8R_1 of the seat portion 8 so that the first portion 8R_1 of the seat portion 8 is engaged with the frame portion 8R_1 of the seat portion 8, (10).

While the first portion 8R_1 of the seat portion 80 is displaced along the first guide portion 11 between the front and the rear on the frame 10 as indicated by the arrow A1, The rod member 8R_2 coupled to the second portion 8_2b of the portion 8 may also be provided with the rotation axis guide portion 12 that guides the rod member 8R_2 to be displaced as indicated by the arrow A2. In one embodiment, the rotation axis guide portion 12 may be provided so that the locus of the first portion 8R_1 and the locus of the rotation axis 8_2b displaced along the rotation axis guide portion 12 are parallel to each other. For example, when the first guide portion 11_1 of the side guide portion 11C is linear, the rotation axis guide portion 12 may be straight like the first guide portion 11_1. In another embodiment, the first guide portion 11_1 may be convex or concave curved toward the upper side of the frame 10. [ In this case, the rotation axis guide portion 12 may also be curved or convex toward the upper side along the first guide portion 11_1.

The pivot shaft guide 12 may include a trench rail or a through slit formed on the frame 10. Figs. 4A and 4B disclose a pivot shaft guide portion 12 having a through-hole. The through-slit may be provided through a part of the side of the frame 10, or may be provided in a protruding form on the top of the frame 10 as shown in Fig. 4A, but the present invention is not limited thereto, There may be deformations.

Since the first portion 8_2a and the second portion 8_2b of the seat portion 8 are fixed by the side guide portion 11C and the rotation axis guide portion 12, 8 can be displaced in a sliding manner stably between the rear side and the front side. In the above-described embodiments, the first portion 8_2a and the second portion 8_2b of the seat portion 8 are not disposed on a single vertical line from the ground but are eccentric. In this case, the seat portion can be more stably mounted on the frame 10 without rattling. However, if this is exemplary, the first and second portions of the seat portion may be arranged side by side on a single vertical line from the ground. For example, a first portion and a second portion of the sheet portion 8 are defined on a vertical line from the ground, and rod members penetratingly connected to the first portion and the second portion may be provided.

A suitable rotation guide member can be provided so that the rod member 8R_2 functioning as a pivot can rotate without being displaced at a predetermined position. In the embodiment shown in Figs. 4A and 4B, the rotation shaft guide portion 12 combines the function of the rotation guide member. To this end, when the first portion is located at the front end portion of the first guide portion, the region where the pivot shaft coupled to the second portion is located is a circular shape that can surround the pivot shaft of the circular cross- You can have an inner week. The first portion 8R_1 of the seat portion 8 is rotated along the second guide portion 11_2 along the dotted line T2 and the second portion 8R_2 of the seat portion 8 is rotated while the second portion 8R_2 of the seat portion 8 is fixed by the pivotal axis 10S The seat portion 8 is entirely bent backward. Although the embodiment shown in Figs. 4A and 4B discloses a pivot shaft guide portion in the form of a through-slit, it may have a trench rail structure or other suitable structure.

The tricycle according to the above-described embodiment is merely an example, and can be applied to a baby carriage, an automobile toy or other hybrid passenger vehicle having a backrest adjusting seat for a child to be accompanied by such a characteristic, and is preferably a children's tricycle .

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the invention as defined in the appended claims. It will be clear to those who have knowledge.

Claims (15)

A frame extending from a front side to a rear side to support a front wheel and a rear wheel;
A seat portion mounted on the frame, the seat portion being constrained to the frame and displaced between the front portion and the rear portion, the seat portion including a first portion and a second portion spaced from the first portion;
A first guide portion provided on one side of the frame and guiding the first portion of the seat portion to be restrained so that the seat portion is displaced between a front side and a rear side; And a second guide portion for guiding the first portion to be displaced in one direction between a tangential direction of a locus of motion of the first portion of the seat portion and a direction perpendicular to the ground; And
A pivoting shaft for restricting rotation of the second portion of the seat portion such that the seat portion is tilted backward when the first portion of the seat portion is displaced along the second guide portion at the at least one point of the first guide portion Contains an infant passenger device. The method according to claim 1,
And the seat portion is displaced on the frame so as to be displaced. The method according to claim 1,
Wherein at least one point of the first guide portion includes the front wheel side end portion of the first guide portion. The method according to claim 1,
Wherein the first portion and the second portion of the seat portion are not arranged in a single line from the ground but in an eccentric position. The method according to claim 1,
Wherein the first portion of the seat portion includes a first projection for engagement with the frame at a position in contact with the frame. 6. The method of claim 5,
Wherein the first guiding portion or the second guiding portion of the side guiding portion includes a trench rail or a through slit that is engaged with the first projecting portion. 6. The method of claim 5,
Said first projection being provided by a rod member coupled through said first portion of said seat portion,
Wherein the rod member has a rod portion passing through the first portion of the seat portion and a head portion for allowing the rod portion to penetrate and penetrate with a limited length. 8. The method of claim 7,
Wherein the rod member is resiliently coupled to the first portion so that the depth of the rod portion can be elastically adjusted. The method according to claim 6,
Wherein at least one of the first guide portion and the second guide portion includes at least two stopper patterns including a concavo-convex pattern, a wavy pattern or a groove pattern in an inner region where the first projection contacts. The method according to claim 1,
Further comprising a rotation axis guide portion provided between the front and rear sides of the frame and guiding the rotation axis to slide together while the first portion of the seat portion is slid along the first guide portion. 11. The method of claim 10,
The rotation axis is provided by a second projection formed at a position in contact with the frame of the second portion of the seat portion,
And the second projecting portion is constrained to the rotation axis guide portion. 11. The method of claim 10,
The second projection including a rod member coupled through the second portion of the seat portion,
Wherein the rod member has a rod portion passing through the second portion of the seat portion and a head portion for allowing the rod portion to penetrate through the limited length. 11. The method of claim 10,
Wherein a trajectory of the first portion displaced along the first guide portion and a trajectory of the second portion displaced along the guide axis guide portion are parallel to each other such that the seat portion slides on the frame. The method according to claim 1,
Wherein the first guide portion is linear and the second guide portion is an arc centered on the rotation axis. The method according to claim 1,
The infant passenger device is a two-wheeled bicycle, a tricycle or a baby carriage.

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