JPH1095346A - Seat device for infant - Google Patents

Abstract

PROBLEM TO BE SOLVED: To always hold the proper posture of an infant by attaching a backside to the rear side of a seat, steps to the front of the seat so as to be rotated, one end of an interlocking bar to the lower side of the backside and its other end to the backside of the step to be rotatable. SOLUTION: A backside 17 disposed in the rear side of a seat 11 is provided to be rotated around a rotary shaft 19. A step 23 is provided to be rotated around a rotary shaft 25. One end of an interlocking bar 39 is fitted to the lower side of a backside, its other end being fitted to the backside of the step to be freely rotated. When the backside 17 is rotated against the seat 11, the interlocking bar 39 attached to the backside 17 presses the backside of the step 23, and the step 23 is set to a specified rotational angle. Thus, the comfortable posture of a child is always maintained.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an infant seating device such as a stroller and an infant chair, and more particularly to a step structure for a seated infant to put his feet on.

[0002]

2. Description of the Related Art Conventionally, there are various types of infant seating devices. For example, a stroller used outdoors when going out, an infant chair that can be moved indoors by wheels provided on legs similarly to an infant chair used indoors, or used when eating with a table or the like Such as racks.

[0003] In this specification, an infant has a broader concept than an infant in general, and any person who needs a childcare seating device includes a newborn, an infant, and a child.

A conventional infant seating apparatus generally has a back portion rotatably provided behind a seat portion. A belt is provided so that the seated infant does not shift forward. There is also a step provided in front of the lower part, but this step is a fixed type, and the child is not in a state of sleeping, but is fixed in a position where a foot can be put in a state when awake and eating. Was provided.

[0005]

However, in the conventional infant seating apparatus having no steps, the feet are thrown into the air in an unstable state when the infant is upright with the back upright. It was difficult to maintain an appropriate sitting posture.

Further, in the conventional infant seating apparatus having fixed steps, the position of the steps is fixed to one, even though the inclination angle of the back portion with respect to the seat portion can be variously changed. It was difficult to maintain various postures in comfortable positions.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and can keep the infant's posture properly at all times even if the rotation angle of the back with respect to the seat changes variously. It is an object of the present invention to provide an infant seating device.

[0008]

SUMMARY OF THE INVENTION In order to achieve the above object, a first aspect of the present invention comprises a back portion rotatably provided with respect to a rear portion of a seat, and a rotatable portion provided with a front portion capable of being rotated with respect to a front portion of the seat portion. And an interlocking bar, one end of which is rotatably mounted below the back and the other end of which is rotatably mounted on the back of the step. . Further, the invention according to claim 2 is further characterized in that, in a state in which the back portion is lying substantially in the same plane state with respect to the seat portion, the vertical side portion of the substantially L-shaped vertical section of the step is substantially flush with the seat portion. At the lifting position, the interlock bar is attached,
2. The infant seating apparatus according to claim 1, wherein the entirety of the seat, the back, and the steps are substantially horizontal.

Further, according to the invention of claim 3, furthermore, the seat portion is provided with left and right armrest portions integrally therewith, and the back portion is provided with left and right surrounding portions integrally with the armrest portion, A headrest coupling mechanism is provided in which the headrest is raised when the back is lying down, and the step has a substantially L-shaped vertical cross section, so that when the back is lying down, the periphery of the infant is armrested, enclosed, headrest, and 3. The infant seating device according to claim 1, wherein the stepped portion is surrounded by an L-shaped lower side portion.

Further, in the invention according to claim 4, the entirety of the interlocking bar has a U-shape, and one end of the interlocking bar, which is rotatably mounted below the back, has both ends of the U-shape. It is bent in the shape of a letter and is rotatably fitted in the turning hole on the back, and the other end side that is rotatably attached to the back of the step has the center side of the U-shape rotated to the back of the step The infant seating apparatus according to claim 1, 2 or 3, wherein the infant seating apparatus is held so as to be capable of being held.

Further, the invention according to claim 5 is further characterized in that the lower portion of the back portion on which one end of the interlocking bar is rotatably mounted is formed in a convex arc shape with left and right plate-like shapes, and a seat for receiving the lower portion of this back portion. On the side of the portion, the left and right sides are formed in a concave arc shape, and the left and right convex arc portions are formed such that inner surfaces facing each other are exposed from a seat portion, and a projection portion is formed in the exposed portion. 5. The infant seating apparatus according to claim 4, wherein a rotation hole is formed in the projection.

Further, in the invention according to claim 6, the step provided in front of the seat has a substantially L-shaped vertical cross section,
6. The infant seating apparatus according to claim 1, wherein the substantially L-shaped vertical side portion is configured to be dimensionally adjustable.

Further, according to the invention of claim 7, further, the step is attached to the seat portion and forms a substantially L-shaped upper portion, and the step body can be slid downward and extended using the step body as a guide. An L-shaped lower part comprising a slide part, wherein the slide part is provided with an engagement mechanism for engaging with the step main body to prevent the slide, and a release lever for releasing this engagement. The infant seating device according to claim 1, 2, 3, 4, 5, or 6, wherein

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a first embodiment of the present invention will be described with reference to FIGS.

(Overall Outline) An overall outline will be described with reference to FIGS.

The infant seating apparatus 1 of this embodiment is an infant chair used indoors. The legs 3 are provided on the left and right sides, and are respectively connected by connecting members 5 (FIGS. 2 and 3), so that the legs 3 are configured to be self-supporting as a whole. Two swing bars 7 are provided to the left and right legs 3. The swing bar 7 has a U-shape, and is arranged with the open side of the U-shape upward. The chair unit 9 is disposed with respect to the swing bar 7. The chair 9 can swing in the front-rear direction by the action of the swing bar 7.

(Chair part 9) Next, the chair part 9 is shown in FIGS.
6 will be described.

The seat portion 11 has a seat surface 13 (FIGS. 3 to 6) on which a baby mainly rests on the buttocks, and an armrest portion 15 extending leftward and rightward from the seat surface 13 is integrally provided. A table 16 is detachably provided on the armrest 15 (see FIGS. 2 and 3 for comparison). A back portion 17 disposed behind the seat portion 11 is provided so as to be rotatable around a rotation shaft 19. An enclosing portion 21 that can be arranged in a continuous state with the armrest portion 15 is integrally provided on the left and right sides of the back portion 17. The rotating shaft 19 is provided below the surrounding portion 21. A safety belt 22 is provided on the front surface of the back portion 17 (FIG. 7). In front of the seat 11,
The step 23 is provided so as to be rotatable around the rotation shaft 25. A headrest 27 is provided above the back portion 17 so as to be rotatable around a rotation shaft 29.

A part 31 below the left and right surrounding parts 21 of the back part 17 where the rotating shaft 19 is provided (FIGS. 9 and 11).
Is formed in a plate-like and convex arc shape. The arcuate portion 31 is formed around the rotation shaft 19. Concave arc-shaped portions 33 are formed on the left and right sides of the seat 11 corresponding to the convex arc-shaped portions 31 (FIG. 11).
It is configured to receive the convex arc-shaped portion 31.

(Interlocking mechanism 45) This convex arc-shaped portion 3
1 are left and right, respectively, and the inner surfaces facing each other are exposed from the seat (see FIG. 8). A projection 35 (FIG. 11) is formed on the exposed portion, and a rotation hole 37 is formed in the projection 35. One end of the interlock bar 39 is rotatably attached to the rotation hole 37.

That is, the interlocking bar 39 has a U-shape as a whole, and both ends of the U-shape are bent in an L-shape, and are rotatably fitted in the turning holes 37. A depression 41 is formed in the concave arc-shaped portion 33 within a range in which the protrusion 35 rotates. Both ends of the depression 41 are stoppers that abut against the protrusion 35 and restrict the rotation of the seat 11.

The central side of the U-shape of the interlocking bar 39 is rotatably held on the back of the step 23. Step 2
A groove 43 (FIG. 11) having a circular cross-section for rotatably holding the link bar 3 is provided on the back surface of the link bar 3.
9 has a holding portion 44 (FIG. 8) which is screwed so as not to fall off.

Thus, the interlocking mechanism 45 having the interlocking bar 39 is configured. When the back 17 rotates with respect to the seat 11 by the action of the interlocking mechanism 45, the interlocking bar 39 attached to the back 17 pushes the back of the step 23, and the step 23 has a predetermined rotation angle.

(Tilting Lock Mechanism 53) The inclined state of the back portion 17 is supported by the support bar 47 (FIGS. 5, 8, 9, and 10). The support bar 47 has a U-shape as a whole (FIG. 8), and both ends of the U-shape are bent into an L-shape, and the bent portion is inserted into a hole 49 (FIG. 5) of the seat portion 11. The fitted tip is rotatably fitted, and the fitted tip is stopped by a push nut to prevent slippage. This push nut is fitted in a concave portion formed around the hole 49. The central side of the U-shape engages with the engaging recesses 51 provided in multiple stages on the back surface of the back portion 17 (FIG. 10).

By automatically performing this engagement, the back 17
The tilting lock mechanism 53 for locking the tilting movement, that is, the tilting is provided.

That is, as shown in FIG. 10, the rotating cover 55 covering the engaging recesses 51 provided in multiple stages is
7 is attached to the back of the device 7 so as to be rotatable around a rotation shaft 57. The rotating cover 55 has a box shape with the left surface open in FIG. 10, and can take a state of surrounding and covering the engaging recess 51 and a state of separating from the engaging recess 51 by rotating. . This rotation is performed by putting a finger on a handle portion 58 (FIGS. 8 and 10) provided on the upper part of the rotation cover 55. Elongated holes 59 are formed in the left and right side surfaces of the rotating cover 55 in the up-down direction. The U-shaped central side of the support bar 47 penetrates the left and right long holes 59 and is slidably held.

When the rotating cover 55 covers the engagement recess 51, the support bar 47 is fitted into the engagement recess 51,
In the separated state, it is detached from the engagement recess 51, and by this detachment, it becomes possible to slide in the long hole 59.

(Lock Lever 61) As shown in FIG. 10, a lock lever 61 for locking the turning cover 55 so as to cover the engagement recess 51 is provided on the back above the turning cover 55. Can be The lock lever 61 includes an inner cylinder 63 and an outer cylinder 65, the outer cylinder 65 is fixed to the back 17, and the inner cylinder 63 can rotate with respect to the outer cylinder 65. A head 67 is formed integrally with the outer end of the inner cylinder 63, and the upper end of the rotary cover 55 is pressed by the head 67 to perform locking. The lock and the release of the lock are performed by rotating the head 67.

(Headrest Connection Mechanism 69) As shown in FIG. 10, a headrest connection mechanism 69 is provided for adjusting the headrest 27 to an optimum rotation angle corresponding to the rotation angle of the back portion 17.

That is, one end of a connecting member 73 is integrally provided on a rotating shaft 71 slidably provided in the long hole 59 of the rotating cover 55. The other end of the connecting member 73 is rotatably attached to a shaft 74 (FIG. 8) of the headrest 27. Therefore, when the turning angle of the back part 17 becomes large and the back part 17 is in a lying state, the support bar 47 moves to above the long hole 59 and pushes the connecting member 73. The pushed connecting member 73 rotates the headrest 27 counterclockwise in the figure. As a result, the headrest 27 is in a standing state, and it is possible to support the sleeping infant's head so as not to jump out (FIGS. 7 and 9). The connecting member 73 is a spring 7
5, it is urged downward along the elongated hole 59, and returns to its original state when it is no longer pushed by the support bar 47.

The tilt lock mechanism 53 and the headrest connecting mechanism 69 are described in detail in the official gazettes of the applicants (Japanese Utility Model Publication No. 7-27887 and Japanese Utility Model Publication No. 7-27888).

Downward grooves 77 (FIGS. 2, 3, 5, 8, 9, and 11) for receiving the two swing bars 7 are formed on the bottom surface of the seat portion 11. . The received swing bar 7 is held in the groove by a clip (not shown).

(Leg portion 3) As shown in FIGS. 17 and 18, the leg portion 3 is configured to have an upper script pair 111 and two lower leg members 113. Each leg member 113 is provided with a wheel 115 at a lower end. Front wheel 115
Are provided via casters 117 so that the traveling direction can be easily changed.

The rear leg member 113 is hinged to the leg body 111. The other leg member 113 is hinged to the hinge connection portion 121 of the slide bar 119. Slide bar 119 provided integrally with hinge connecting portion 121
Are slidably received in the leg body 111 in the front-rear direction.

That is, a long hole 123 is formed in the slide bar 119 in the front-rear direction, that is, in the longitudinal direction. The long hole 123 is also formed continuously at the hinge connecting portion 121. The leg body 111 is inserted into the elongated hole 123.
Two pins 1 provided at a predetermined interval
25 penetrates. The slide bar 119 is urged by a spring (not shown) in the leftward direction in FIG. 18, that is, in a direction in which the leg 3 extends and rises.

The slide bar 119 has a square cross section. On the upper surface of the slide bar 119, a plurality of adjustment holes 127 are formed in the longitudinal direction. Pins 129 to be inserted into these adjustment holes 127 are provided on the leg body side so as to be vertically movable. That is, the pin 129 is
1 urges in the insertion direction, that is, downward.
Further, a lever 135 is provided in the middle of the pin 129 to be engaged with the enlarged diameter portion 133, and this lever 135 is disposed outside the leg body 111 (outside the left and right sides of the assembled infant seating device 1). Is done. Lever 135 is pin 1
29 are provided so as to be vertically movable in the longitudinal direction.

With these configurations, when the lever 135 is pulled upward from the outside of the leg body 111, the pin 129 moves upward against the urging force of the spring 131, and the adjustment hole 12
Deviate from 7. When the pin 129 comes off, the slide bar 119 moves leftward in the figure by the action of a spring (not shown).
The legs 3 which are hinged to cross each other in an X-shape
Grow and the height increases.

When the lever 135 is released while the slide bar 119 is sliding, the pin 129 is
The leg 3 is maintained at a predetermined height by being again inserted into the adjustment hole 127 by the urging force of 1. Five adjustment holes 127 are opened, so that when the infant seating device 1 is used, five adjustment holes 127 are formed.
An adjustment is made to the step height. Fifth-stage adjustment hole 127
(Adjustment hole into which pin 129 is inserted in the figure)
Is an elongated hole longer than the other adjusting holes 127, and also serves as an adjusting hole 127 in a stored state described later. (Stopper 141) The leg material 1 is provided on the bottom of the leg body 111.
13 is provided with a stopper 141 that abuts. That is, the X-shaped shape of the leg 3 is advantageous in strength, but if the crossing angle of X becomes too small, for example, 0
, The strength advantage is lost.
For this reason, the stopper 141 abuts on the upper side of the one leg member 113, and the leg member 113 is not folded any more, so that a desirable minimum required crossing angle can be secured.

In this embodiment, the stopper 14
1 is configured to be rotatable around a rotation shaft 143, as shown in FIG. The stopper 141 is rotated clockwise in FIG.
It is urged in a direction to be located between the leg material 113 and the leg material 113. In addition, a depression 1
47 is provided, and a finger is hooked on the depression 147 to rotate in the counterclockwise direction, whereby it is possible to separate from the leg material 113.

Therefore, in a normal use state, the stopper 141 is located between the leg main body 111 and the leg material 113 by the action of the spring 145, and thus comes into contact with the leg material 113. This prevents the intersection angle of X from becoming smaller than the required minimum intersection angle. In this way, the height adjustment from the first step to the fifth step is performed as described above.

When the infant seating apparatus 1 is stored, a finger is hooked on the stopper 141 and rotated in the counterclockwise direction in the figure, so that it moves outward and separates from the leg material 113. This allows the legs to move further upward, fold deeper, and lower the height of the legs. Thereby, the space in the housed state can be made smaller. At this time, the crossing angle of X becomes very small or becomes zero, but in a state where the infant seating device is not used, so much force is not applied to the legs, and there is no inconvenience.

At this time, lay the back part sufficiently against the seat surface,
By making the seat, the back, and the entire step substantially horizontal, it is possible to make the entire infant seating device even flatter and more compact. (Embodiment 2) In the above-described Embodiment 1, the steps have fixed dimensions, but it is also possible to provide a step 23 whose dimensions can be adjusted as in Embodiment 2 shown in FIGS. .

This step 23 has a substantially L-shaped vertical section. Then, a step body 81 and a step body 81
And a slide portion 83 that can be slid downward from the slide portion 83. The step main body 81 constitutes the above-mentioned substantially L-shaped upper part. The slide portion 83 can extend downward using the step main body 81 as a guide, and forms a substantially L-shaped lower portion. The slide portion 83 is provided with an engagement mechanism 85 (FIG. 14) that engages with the step main body 81 and supports the slide portion 83, and a release lever 87 that releases this engagement. This will be described in detail below.

That is, the step main body 81 has two members 81A and 81B constituting a substantially L-shaped vertical portion (FIGS. 14, 15 and 16). These two members 8
1A and 81B are combined from the front and rear, and form a box shape with a downward opening. The rear member 81B is attached to the front member 81A by a plurality of screws 82 (FIG. 16). The slide portion 83 is guided vertically by a guide pin 89 provided on a member 81A of the step main body 81 being fitted into a long hole 91 formed in the slide portion 83 (FIG. 1).
4, and FIG. 16). The guide pin 89 is connected to the screw 82
Is fixed by part of. A bearing 84 for attaching the rotating shaft 25 is provided at the upper end of the rear member 81B.

On the back of the center of the lower part of the slide portion 83,
A release lever 87 that can move up and down is provided. An operation portion 87A of the release lever 87 is provided with a window 83D formed on a back member 83C attached to the back of the slide portion 83.
(FIG. 16). Engagement holes 93 are formed on the left and right of the release lever 87.
The one end 97 of the L-shaped engagement arm 95 is locked. The engagement arm 95 is rotatable around a rotation axis 99 of an L-shaped corner, and is urged by a spring 101 clockwise in the figure (FIG. 14). The other end of the L-shaped engagement arm 95 is connected to the pipe 1 provided on the step body 81 side.
03 is engaged with an engagement hole 105 formed in the same.

The pipe 103 is disposed vertically inside the step body 81 and fixed, and a plurality of engaging holes 105 are provided in the longitudinal direction. A cylindrical holder portion 107 for holding the pipe 103 is formed on the slide portion 83. The holder portion 107 slides in the longitudinal direction of the pipe 103, and the slide portion 83 extends downward from the step main body 81. it can.

The operation of adjusting the dimensions in step 23 will be described mainly with reference to FIGS. When the release lever 87 is pulled downward, the engagement arm 95 is pulled by the release lever 87 and pivots counterclockwise in FIG. 14 (FIG. 14), and the other end of the engagement arm 95 is connected to the pipe 103 of the step main body 81. From the engagement hole 105. In this state, the slide portion 83 can slide downward from the step main body 81 and extend. When the release lever 87 is released when the size of the vertical side portion of the step 23 becomes a desired length due to this slide, the engagement arm 95 returns to the original position again by the action of the spring 101 and the pipe 103 It engages with the engagement hole 105. Thereby, the size of step 23 is adjusted.

(Other Embodiments) In the second embodiment described above, the step 23 whose dimensions can be adjusted is different from the step body 81
Is provided with a pipe 103 having an engagement hole 105, and the slide portion 83 is provided with an engagement arm 95 which engages with the engagement hole 105. In other embodiments, the pipe 103 and the engagement arm The relationship with 95 can be reversed. That is, it is possible to provide the pipe 103 on the slide portion 83 and the engagement arm 95 on the step main body 81.

The engagement mechanism for supporting the slide portion 83 with respect to the step body 81 may be of various types other than the one using the pipe 103 and the engagement arm 95.

For example, a claw (not shown) may be provided on the release lever 87 itself, and a plurality of engagement grooves for engaging with the claw may be formed in the step body 81 side by side in the vertical direction. The release lever 87 is urged by a spring (not shown) in a direction in which the release lever 87 is engaged with the engagement groove. Then, by releasing the release lever 87 against this urging force and removing the release lever 87 from the engagement groove, the slide can be made possible.

In the first embodiment, one end of the interlocking bar 39 is rotatably attached to the back portion 17.
Is formed in the shape of a convex arc, and can be received on the side of the seat 11 similarly formed in the shape of a concave arc.
In another embodiment, it is not always necessary to adopt such a form, and one of the short cylindrical boss portions is fitted into a short cylindrical concave portion formed on the other and is rotatable. It may be. In this case, the rotation hole 37 is provided in another portion near the short cylindrical boss portion.

In the first embodiment, the interlocking bar 39 has a U-shape as a whole. In other embodiments, the interlocking bar 39 does not have a U-shape.
Two linear members may be provided on the left and right.

In the first embodiment described above, the headrest 27 rotates according to the rotation angle of the back portion 17. In other embodiments, the headrest 27 rotates at a predetermined angle with respect to the back portion 17. It may be provided in an inclined and fixed state.

[0054]

As described above, claims 1 and 2,
According to the invention of 3, 4, 5, 6, or 7, when the back is rotated, the interlocking bar attached below the back pushes the back of the step to rotate the step, so that the back of the back relative to the seat is According to the rotation angle, the rotation angle of the step with respect to the seat portion can be optimized.
Therefore, the posture of the infant can always be maintained in a comfortable state.

According to the second aspect of the present invention, the seat, the back,
In addition, by making the whole of the steps substantially horizontal, it becomes possible to provide the infant seating device with a function of a bet.

Since the entirety including the steps is substantially horizontal, there is no need to slide the auxiliary slide portion from the front of the seat portion in order to lay the infant as in the related art.

According to the third aspect of the present invention, further, the child is surrounded by the L-shaped variable portions of the armrest portion, the surrounding portion, the headrest, and the step with the back portion lying down, thereby further improving safety. It is possible to increase.

According to the fourth aspect of the present invention, the interlocking bar can be firmly constructed with a simpler structure.

According to the fifth aspect of the present invention, the lower part of the back to which the interlocking bar is attached is formed in an arc shape,
Since it has sufficient strength and is received by the concave arc-shaped portion of each seat, it is possible to sufficiently receive a large force due to the rotation of the back.

According to the sixth or seventh aspect of the present invention, the size of the steps can be adjusted according to the growth of the infant's body, and the posture of the infant can be maintained in a more suitable state. .

According to the seventh aspect of the present invention, the slide portion can be slid from the step body by operating the release lever, and the size can be easily adjusted.

[Brief description of the drawings]

FIG. 1 is an overall perspective view of an infant seating device according to an embodiment of the present invention.

FIG. 2 is a view showing a state in which a leg and a chair are separated in FIG. 1;

FIG. 3 is a view showing a state where a table is removed from a chair in FIG. 2;

FIG. 4 is a view showing a state in which a leg and a chair are combined in FIG. 3;

FIG. 5 is a side view of FIG. 4;

FIG. 6 is a front view of FIG. 4;

FIG. 7 is a view showing a state in which the back part is laid down in FIG. 4;

8 is a perspective view of the chair portion of FIG. 3 as viewed from the lower rear side.

FIG. 9 is a side view of the chair unit of FIG. 7;

FIG. 10 is an enlarged view showing a main part of an upper part of the chair unit of FIG. 5;

FIG. 11 is an enlarged view showing a main part of a lower part of the chair unit of FIG. 5;

FIG. 12 is a perspective view showing another embodiment of the step of FIG. 1;

FIG. 13 is a diagram showing the operation of FIG.

14 is a vertical sectional front view of FIG.

15 is a vertical sectional side view of FIG.

FIG. 16 is an exploded perspective view of FIG. 14 as viewed from the rear.

FIG. 17 is a view showing one of the left and right legs in FIG. 2 or 3, and the height of the legs is in the fifth stage.

18 is an enlarged side view of a main part of FIG. 17;

[Explanation of symbols]

3 Leg 7 Swing bar 9 Chair 11 Seat 15 Armrest 17 Back 19, 25, 29 Rotating shaft 21 Enclosure 23 Step 27 Headrest 39 Interlock bar 45 Interlock mechanism 47 Support bar 51 Engagement recess 53 Tilting lock mechanism 55 Rotating cover 59 Long hole 61 Lock lever 69 Headrest connecting mechanism 73 Connecting member 81 Step body 85 Engaging mechanism 87 Release lever 113 Leg 115 Wheel 119 Slide bar 121 Hinge connecting part 127 Adjusting hole 129 Pin 131 Spring 135 Lever 141 Stopper

Claims (7)

[Claims] A step provided rotatably with respect to the rear of the seat; a step provided rotatably with respect to the front of the seat; and a step having one end rotatably mounted below the back. An interlocking bar, the other end of which is rotatably attached to the back of the seat. 2. In a state in which the back portion is lying on the substantially same surface state with respect to the seat portion, the interlocking bar is located at a position where the vertical side portion of the substantially L-shaped vertical section of the step is lifted to substantially the same surface state with respect to the seat portion. 2. The mounting of claim 1 wherein the seat, back, and steps are generally substantially horizontal.
The seating device for an infant according to the above. 3. An armrest portion is provided integrally on the left and right sides of the seat portion, and an enclosing portion is provided integrally on the back portion continuously with the armrest portion, and the headrest is raised when the back portion is lying down. A headrest coupling mechanism is provided, and the step has a substantially L-shaped vertical cross-section, so that the back is lying down,
3. The infant seating device according to claim 1, wherein the periphery of the infant is surrounded by an armrest portion, an enclosing portion, a headrest, and an L-shaped lower side portion of a step. 4. The interlocking bar has a U-shape as a whole, and one end of the interlocking bar, which is rotatably mounted below the back, has both ends of the U-shape bent into an L-shape to turn the back. The other end side rotatably fitted to the moving hole and rotatably attached to the back of the step is characterized in that the central side of the U-shape is rotatably held on the back of the step. The infant seating device according to claim 1, 2, or 3. 5. A lower portion of a back portion to which one end side of the interlocking bar is rotatably attached is formed in a convex arc shape with left and right plate shapes, and a seat portion receiving the lower portion of the back portion has a left and right concave portion. The left and right convex arc-shaped portions are formed such that inner surfaces facing each other are exposed from a seat portion, and a projection portion is formed on the exposed portion, and the projection portion is pivoted. The seating device for an infant according to claim 4, wherein a hole is formed. 6. A step provided in front of the seat is substantially L
A vertical section having an L-shape, and a substantially L-shaped vertical side portion is configured to be dimensionally adjustable.
6. The infant seating device according to 3, 4, or 5. 7. A step body attached to a seat portion to form a substantially L-shaped upper portion, and a slide formed by sliding downward with the step body as a guide and forming a substantially L-shaped lower portion. 3. A sliding part comprising: an engaging mechanism for engaging the step main body to prevent the sliding; and a release lever for releasing the engagement. 3, 4,
7. The infant seating device according to 5 or 6.