JP2576019Y2 - Child seat - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a child seat mounted on a vehicle seat cushion.

[0002]

2. Description of the Related Art Conventionally, a child seat has been used to restrain a child by webbing when the child is seated in a passenger seat or a rear seat. In general, various types of child seats are provided according to the age and physique of the child, and are roughly classified into baby seats (hereinafter, referred to as “baby seats”) and infant ages up to 0 to 6 months after birth. Seats for babies from one month to less than one year old (hereinafter referred to as "infant seats"), seats for infants from one year old to less than four years old (hereinafter referred to as "child seats"), and further. There are seats for infants aged 4 and over (hereinafter referred to as "junior seats").

[0003]

[Problems to be solved by the invention] However, conventionally, these baby seats, infant seats,
Child seats and junior seats are manufactured independently of each other, and consumers have to purchase seats one by one according to the age and physique of the child. For this reason, there has been a problem that the purchase cost of the sheet is increased, and it becomes uneconomical.

When a seat is used, it is necessary to appropriately switch the backrest portion and the base to which the seatback is attached to the base, to which the seatback is attached, in a fixed state, a detachable state, and a rotatable state. There is a problem that the switching operation becomes complicated.

[0005] In view of the above facts, the present invention can be widely used according to the growth of a child, and the backrest and the base can be fixed, detachable and rotatable by a simple operation. The purpose is to obtain a sheet for use.

[0006]

A child seat according to the present invention comprises a base mounted on a vehicle seat cushion, a rotating member rotatably supported by the base, and an integral part of the rotating member. To the rotating member so as to rotate
A backrest having a fixing portion that is detachably supported, a seating portion that is detachably attached to at least one of the base and the fixing portion of the backrest, and a seating portion that is attached to the fixing portion of the backrest. The fixed portion of the backrest is engaged with the base to fix the backrest and the base in a fixed state, and the fixed portion of the backrest and the rotating member are integrally engaged only with the rotating member. To be rotatable with respect to the base, and
By releasing the engagement between the base and the rotating member, the backrest can be separated from the rotating member and the base.
Switching means for switching the fixing portion of the child seat to a detachable state.

[0007]

According to the present invention, the base is placed on the seat cushion of the vehicle, and the backrest is attached to the base.
Then, a seating portion is attached to the backrest or the base. As a result, a seat back is formed by the back portion, and a child seat in which a seat cushion is formed by the seat portion is configured. Therefore, it is economical because the consumer can share the base over a wide range from infants to infants and replace the backrest attached to the base to construct a child seat.

Further, switching means is provided between the backrest portion and the base, and the backrest portion and the base can be brought into a fixed state, a detachable state, and a rotatable state by the switching means. Each of the above states can be set.

[0009]

FIG. 1 shows a child seat 10 according to one embodiment of the present invention. The child seat 10 includes a base 12 as a base, a turntable 14,
It comprises a seat back 16 as a seating portion and a seat cushion 18 as a backrest, and is arranged on a rear seat of the vehicle. In the present embodiment, by appropriately combining these four elements, it is possible to use them as a child seat and a junior seat. Also, a baby infant unit 16 to be described later.
By combining with 0, it can be used as a baby seat and an infant seat. Hereinafter, the base portion 12, the turntable 14, the seat back 16, and the seat cushion 18 will be described in this order.

[Base] As shown in FIG. 1, a base 12 has a substantially box-shaped base body 20, and a holding lid rotatably supported inside the front end of the base body 20. 22 and a rotating plate 24 rotatably attached to the rear end of the base body 20.

Webbing hooks 26 are formed on both sides of the base body 20 in the width direction. The webbing hook 26 rises toward the upper side of the vehicle, and its tip is bent like a hook toward the front side of the vehicle. further,
A pair of webbing guides 28 are provided on both sides of the bottom of the base body 20, and are elastically deformable. A fitting recess 30 is formed between the pair of webbing guides 28.

[0012] As shown in FIG.
A fitting projection 32 provided on the back side of the holding lid 22 described later is fitted therein. That is, the lap webbing 34 and the shoulder webbing 37 of the seat
Are locked to the webbing hooks 26 of the base body 20, and then guided under the pair of webbing guides 28. In this state, the holding lid 22 is rotated and closed by the base body 20, so that the fitting projection 32 Is fitted into the fitting recess 30, and the wrap webbing 34 or the wrap webbing 34
And the shoulder webbing 37 is sandwiched. Thus, the base body 20 is fixed to the seat.

The above-described method of fixing the base body 20 is performed when the child seat 10 is used as a child seat, a baby seat, and an infant seat. When the child seat 10 is used as a junior seat, a rail 114 of the seat cushion 18 described later is locked by a pair of elastic locking claws 35 formed on the base body 20 (the elastic locking claw of the rail 114). 11 is a side view of the state after the engagement with the webbing 35, the wrap webbing 34 is locked by the webbing hook 26 and the infant is also restrained in this state. That is, when used as a junior seat, the wrap webbing 34 restrains the base portion 12, the seat cushion 18 and the child together with the wrap webbing 34.

When the base portion 12 is fixed to the front passenger seat when used as a child seat, a baby seat and an infant seat, the lap webbing and the shoulder webbing of the three-point seat are superposed. In this state, it is pressed and held by the holding lid 22.

As shown in FIG. 1, the holding lid 22 has a substantially rectangular flat plate shape. A circular concave portion 36 for accommodating a turntable 14 to be described later is formed in the center of the holding lid 22. A fixing hole 96 is formed in the periphery of the concave portion 36. Further, a pair of operation knobs 38 are provided on the rear side of the concave portion 36 of the holding lid 22, and the operation of removing the holding lid 22 and the base body 20 is performed by the operation knobs 38. Next, the attachment / detachment operation using the operation knob 38 and a configuration related to the attachment / detachment operation will be described.

(Removal operation by operation knob and its configuration) As shown in FIG. 3, a substantially C-shaped reinforcing plate 40 is fixed to the holding lid 22.
The rotating shaft 44 is supported by the bracket 42 of the above. The operation knob 38 described above is fixed to the rotation shaft 44.
A substantially U-shaped lock plate 46 is formed integrally with the operation knob 38. The lock plate 46 can be engaged with an L-shaped plate 48 fixed to the base body 20. When the holding lid 22 is completely fitted into the base body 20, the operation knob 38 is in a state shown by a solid line.
6 is engaged with the L-shaped plate 48. In addition,
The operating knob 38 is normally urged by an urging means (not shown) in a direction in which the lock plate 46 is engaged with the L-shaped plate 48. The L-shaped plate 48 has a long hole formed therein, and the long hole is filled with a resin 50.
Therefore, when the normal operation knob 38 is operated, the distal end of the lock plate 46 slides on the back surface of the L-shaped plate 48. Is penetrated through the resin 50 and is engaged into the elongated hole.

Rotary shaft 44 to which operation knob 38 is fixed
A cam 52 having a raised tip is fixed to a position separated from the operation knob 38. Immediately above the cam 52, a pressing plate 54 that is pivotally supported on the turntable 14 described later is arranged. Therefore, when the operation knob 38 is moved from the position shown by the solid line to the position shown by the two-dot chain line (in this state, the holding lid 22 and the base body 20 are not connected), the cam 52 presses the pressing plate 5.
4 is pushed up to accommodate the recess 58 of the turntable 14.
Protruding upward. Therefore, it is impossible for the occupant to fix a fixing portion 68 of the seat back 16, which will be described later, to the turntable 14, and a malfunction by the occupant when the holding lid 22 is not completely connected to the base body 20 is prevented. ing. The substantially C-shaped support plate 56 provided on the rear side of the cam 52 of the reinforcing plate 40 will be described later.

As shown in FIG. 1, the rotating plate 24 standing upright at the rear end of the base body 20 is a rectangular flat plate. The lower end of the rotating plate 24 is pivotally supported by the base body 20. The state shown in FIG. 1 is a standing state of the rotating plate 24, and the rotating plate 24 can rotate from this state to a flat state that is substantially parallel to the base body 20. When used as a junior seat, the rotating plate 24 is in a flat state, and when used as a child seat, the rotating plate 24 is in an upright state. Thus, in the former case, the seat cushion 1
8 and a rotating plate 24, which will be described later, are substantially flush (see FIG. 11), and as a result, the seating surface is extended. In the latter case, when the seat back 16 is fixed to the turntable 14, interference between the seat back 16 and the rotating plate 24 is avoided, and the base portion 12 rotates while being fixed on the rear seat. The back surface of the plate 24 is in surface contact with the seat cushion of the rear seat, preventing damage due to local depression of the seat cushion. The flat state of the rotating plate 24 is the first position, and the upright state of the rotating plate 24 is the second position. [Turntable] As shown in FIGS. 1, 4, and 5, the turntable 14 has a disk shape in plan view, and is fitted in the concave portion 36 of the holding lid 22. When the turntable 14 is fitted in the concave portion 36 of the holding lid 22, the turntable 14 is rotatable in the concave portion 36 of the base portion 12. A rectangular parallelepiped accommodation recess 58 is formed at the center of the turntable 14.

As shown in FIG. 4, the turntable 1
The first engaging hole 60 is formed at a plurality of locations on the peripheral wall of the fourth. A protruding portion 90 on the rear end side of the fixing portion 68 of the seat back 16 described later is selectively penetrated into these first engagement holes 60. Also, turntable 1
A second engaging hole 62 is formed on the left side of FIG. A lock pin 92 provided on the front side of the fixing portion 68 of the seat back 16 described later penetrates through the second engagement hole 62. [Seat back] As shown in FIG.
And a headrest 66 provided at the upper end of the backrest 64, and a substantially rectangular parallelepiped fixing portion 68 integrally provided from the lower end of the backrest 64 and protruding toward the front of the vehicle. The seat back 16 is used when the child seat 10 is used as a child seat (1 to 4 years old).

The backrest 64 is bent substantially parallel to each other toward the front of the vehicle. In the center of the back portion of the backrest 64, an elongated support portion 70 that is curved in the vertical direction of the vehicle is integrally formed. A stay (not shown) of a headrest 66 is provided at the upper end of the support portion 70.
Are inserted and fixed. The headrest 66 is provided with winding devices (not shown) on both inner sides thereof, and winds one end of each of the two infant belts 72 and 73 independently. Two infant belts 72, 73
Is connected to the seat cushion 18 by a crottling 74 and a crotch buckle 76. The engagement between the crotch buckle 74 and the crotch buckle 76 is released by pressing the buckle switch 77 of the crotch buckle 76.

The fixing portion 68 is provided with a rectangular parallelepiped accommodation portion 78 at the center thereof. Slits 80 are formed on both side walls of the fixing portion 68. On the support wall 82 located outside the slit 80, three steps of grooves 84, 85, 86 are formed in the depth direction of the slit 80, and are used for adjusting the height of the seat cushion 18.
The contact wall 88 inside the slit 80 is related to an opening / closing mechanism of the side support 118 described later, and this will be described in detail in the description of the seat cushion 18.

(Fixing Structure of Seat Back to Turntable) As shown in FIGS. 5A to 5C, a fixing portion 68 is provided.
Has a protruding portion 90 formed at the rear end thereof, and can be selectively penetrated into the first engagement hole 60 of the turntable 14 described above. Further, a lock pin 92 which is slidable in the longitudinal direction of the fixing portion 68 is provided at the front end of the fixing portion 68, and can be penetrated into the second engagement hole 62 of the turntable 14 described above. I have. The lower surface of the lock pin 92 is an inclined surface 92 </ b> A, and the inclined surface 92 </ b> A interferes with the periphery of the turntable 14. One end of the lock pin 92 in the axial direction (the end on the inner side of the fixed portion 68) is urged by a compression coil spring 94 (see FIG. 6) in the projecting direction of the lock pin 92.

In order to fix the seat back 16 to the turntable 14, the seat back 16 is placed on the turntable 14 in an inclined state as shown in FIG. As shown in FIG. 5A, the protrusion 90 penetrates through the first engagement hole 60, and in this state, as shown in FIG. 5C, the lock pin 92 abuts and interferes with the periphery of the turntable 14 and is further pushed in. As a result, the lock pin 92 is fixed to the fixing portion 68 against the urging force of the compression coil spring 94.
After being retracted into the inside, the lock pin 92 is
With the urging force described above, the second engaging hole 62 is penetrated. In this state, the projecting portion 90 of the fixing portion 68 is received by the support plate 56 fixed to the reinforcing plate 40, and the lock pin 92 is fixed to the second engaging hole 62 of the turntable 14 and the fixing hole 96 of the holding lid 22. Through the seat back 16, the turntable 14, the holding lid 2
2 and thus fixed to the base body 20. In a completely fixed state, the support plate 56 supports the load applied to the seat back 16 in the vehicle vertical direction (particularly, above the vehicle).

(Rotating operation of seat back and detaching operation from turntable) As shown in FIG.
One end of an arm 100 rotatable about 8 is pivotally supported. The other end of the arm 100 is connected to one end of the rod 104 of the operation lever 102 in the axial direction by a ball joint. Therefore, the operation lever 102 and the lock pin 92 are connected via the rod 104 and the arm 100. Here, when the operation lever 102 is at the position shown by the solid line, the lock pin 92 is also at the position shown by the solid line. Accordingly, in this state, the lock pin 92 is penetrated into the fixing hole 96 of the holding lid 22, and the seat back 16 is completely fixed.

A fixing pin 106 protrudes from an intermediate portion of the rod 104 in the axial direction (on the operation lever 102 side). An interference pin 108 protrudes from the base body 20 side on the movement locus of the fixed pin 106. For this reason, when the operation lever 102 is pulled out from the position shown by the solid line to the position shown by the dashed line, the fixing pin 106
8 and can no longer be pulled out. When the operation lever 102 is at the position shown by the dashed line, the lock pin 92 is also at the position shown by the dashed line. Therefore,
In this state, the seat back 16 is
And can be rotated.

When the operating lever 102 is rotated by 90 degrees about the axis of the rod 104 in a state where the fixing pin 106 interferes with the interference pin 108,
And the interference pin 108 is released from the interference state. After the interference state is released, when the operation lever 102 is pulled out to the position shown by the two-dot chain line, the lock pin 92 moves to the position shown by the two-dot chain line. Therefore, in this state, since the lock pin 92 is retracted from the second engagement hole 62 of the turntable 14,
The seat back 16 can be detached from the turntable 14.

[Seat Cushion] The seat cushion 18 has a seat 110, and a substantially rectangular parallelepiped block 11 is provided on the lower surface of the seat 110.
2 are formed. On both sides of the block 112, a long rail 114 is integrally formed. The rail 114 is provided with the height adjusting grooves 84, 85, 86.
It can be fitted to. Therefore, the seat cushion 1
8 can be adjusted in three stages according to the sitting height of the child.

An opening 116 for tilting the crotch buckle 76 is formed in the front of the center of the seat 110. Side supports 118 that can be opened and closed at a predetermined angle are provided on both sides of the seat 110. And
The seat cushion 18 is provided with a crotch buckle attaching / detaching mechanism and a side support opening / closing mechanism, which will be described in this order.

(Crotch Buckle Detachment / Attachment Mechanism) As shown in FIG. 7, a hook 120 is formed on the back side of the tip of the crotch buckle 76. The drum 12 disposed in the opening 116 through the hook 120
2 and the crotch buckle 76 are engaged.

The drum 122 has a pair of disks 124, 12
6 is provided. A rectangular flat coupling shaft 128 is fixed between the pair of circular plates 124 and 126, and has a thickness that allows the hook 120 of the crotch buckle 76 to be locked. A に は cylindrical cover 130 is fixed to the １ ／ peripheral edge of the pair of disks 124 and 126. A crotch gear 132 is fixed to one of the disks 124 so as to rotate integrally with the drum 122. A shaft 134 is formed at the axis of the crotch gear 132 and one of the disks 126, and is supported by the side of the opening 116. Similarly, the other disk 1
A support shaft (not shown) is also formed on the support shaft coaxially with the support shaft 134, and is supported by the side of the opening 116.

One end of a tension coil spring (not shown) is locked to the other disk 124. The other end of the extension coil spring is locked on the side of the opening 116. Therefore, when the crotch buckle 76 is detached from the drum 122, the drum 122 receives the urging force of the tension coil spring and is in a state shown in FIG. 9C. Half is closed.

A protruding stopper 136 is fixed to a part of the end face of the crotch gear 132. The stopper 136 relates to the side support 118 described later, and will be described in detail in the description of the side support 118.

When the child seat 10 is used as a child seat, the hook 1 of the crotch buckle 76 is used.
20 is engaged with the coupling shaft 128 of the drum 122 (the state shown in FIG. 8). In this state,
The leaf spring 138 (FIG. 9) disposed on the crotch buckle 76
(A) is engaged in the notch 140 of the coupling shaft 128 to maintain the engagement between the crotch buckle 76 and the coupling shaft 128.

When the child seat 10 is used as a junior seat, only the seat cushion 18 is used, so that the crotch buckle 76 must be detached from the seat cushion 18. Hereinafter, an operation of detaching the crotch buckle 76 from the seat cushion 18 will be described.

First, the crotch buckle 76 is tilted forward from the state shown in FIG. 8 to the state shown by the solid line in FIG. 8A. Crotch buckle 7 from this state
6, the hook 120 of the crotch buckle 76 is disengaged from the coupling shaft 128 (the state shown by the two-dot chain line in FIG. 9A). Next, as shown in FIG. 9B, the crotch buckle 76 is passed under the coupling shaft 128, and the crotch buckle 76 is pulled out as shown in FIG. 9C. As a result, the crotch buckle 76 is separated from the drum 122 and the drum 122 is moved by the urging force of a tension coil spring (not shown).
30 closes the opening 116 substantially halfway. As a result, the crotch buckle 76 is detached from the seat cushion 18.

(Side Support Opening / Closing Mechanism) When the child gets on and off, the crotch buckle 76 is brought forward, and it is necessary to open the side support 118 to the maximum to improve the getting on and off performance. As shown in FIG. 10, a middle gear 142 is pivotally supported on the front side of the side support 118. The middle gear 142 meshes with the worm gear 144. The worm gear 144 of the pair of side supports 118 is fixed to one shaft 146,
A small gear 148 is fixed to an intermediate portion of the shaft 146 in the axial direction. Accordingly, the small gear 148 and the worm gear 144 rotate together with the shaft 146. Small gear 14
8 meshes with the crotch gear 132 of the drum 122. Accordingly, the crotch gear 132 rotates in accordance with the tilt angle of the crotch buckle 76, and the rotational force is transmitted to the pair of side supports 118 via the small gear 148, the shaft 146, the worm gear 144, and the middle gear 142.

The stopper 13 of the crotch gear 132
In the vicinity of 6, an engagement arm 150 is rotatably arranged. The engagement arm 150 includes a base 150A,
0B and the engaging portion 150C. The base 150A is urged by a tension coil spring 152 so as to be separated from the drum 122.

The rail 11 of the seat cushion 18
When 4 is engaged with the lower groove 86, the contact portion 150 </ b> B of the engagement arm 150 contacts the support wall 88 of the fixed portion 68 of the seat back 16. However, rail 11
4 is engaged with the upper groove 84 and the middle groove 85, the contact portion 150B of the engagement arm 150 is
Is not brought into contact with the support wall 88 of the first embodiment. That is, the contact portion 150B and the support wall 880 are separated from each other.

As shown in FIG. 10, when the support wall 88 and the contact portion 150B are separated from each other, the engaging portion 1 of the engaging arm 150 is urged by the tension coil spring 152.
50C does not engage with the stopper 136 of the crotch gear 132. Therefore, the drum 122 is
And the contact portion 150 </ b> B can be rotated to a position higher than the engagement position. However, when the support wall 88 and the contact portion 150B are in contact with each other, the engagement portion 150C of the engagement arm 150 is pressed by the contact portion 150B against the urging force of the extension coil spring 152. It comes to a position where it engages with the stopper 136 of the crotch gear 132. Therefore, the drum 12
2 is regulated.

More specifically, in a state where the rail 114 of the seat cushion 18 is engaged with the upper groove 84 of the seat back 16 (a state where the seat surface is highest).
Since the stopper 136 does not interfere with the contact portion 150B, the crotch buckle 76 is tilted toward the seat back 16 and is at the position shown by the solid line in FIG. Accordingly, the wearing state of the belts 72 and 73 for the child is optimal.
On the other hand, in a state in which the rail 114 of the seat cushion 18 is engaged with the lower groove 86 of the seat back 16 (a state in which the seat surface is lowest), the contact portion 88 is
36, the crotch buckle 76
Is reduced to the position shown by the dashed line in FIG. Therefore, also in this case, the wearing state of the child belts 72 and 73 for the child is optimal. However, with this amount of tilting of the crotch buckle 76, the opening of the side support 118 is small.

When the crotch buckle 76 is detached from the seat cushion 18 and used as a junior seat, the crotch buckle 76 is tilted to the position shown by the two-dot chain line in FIG. Accordingly, in this state, the side support 118 is opened to the position shown by the two-dot chain line in FIG. 10 so as to fit the physique of an infant (5 years old or older).

In the above-described embodiment, the configuration and each operation in the case where the child seat 10 is used as a child seat and a junior seat have been described. However, the child seat 10 is used as a baby seat and an infant seat. The configuration and each operation in the case will be described below.

As shown in FIGS. 12 and 13, when the child seat 10 is used as the baby seat and the infant seat, the baby infant unit 160 as the baby seat is also used. The baby infant unit 160 has a pedestal 16 in the center.
2, and the base 162 is formed with a grip 164. Further, a lower portion of the base 162 is a fixing portion 166, and the fixing portion 166 is fixed to the turntable 14 fitted to the base portion 12. The fixing structure between the fixing portion 166 and the turntable 14 is the same as that of the child seat except for the lock pin 168, and the description of the same components will be omitted.

A seat cushion 172 and a seat back 170 are attached to the base 162.
These seat cushion 172 and seat back 17
0 can rotate in directions approaching and moving away from each other.

When the baby infant unit 160 functions as a baby seat, as shown in FIG. 12, the seat cushion 172 and the seat back 170 are in a horizontal state, that is, the baby bed is in a baby bed state. Used. When functioning the baby infant unit 160 as an infant seat, as shown in FIG. 13, the seat cushion 172 and the seat back 170 are rotated so as to form a predetermined angle, and are used in this state. It has become.

Here, as shown in FIG. 14, the lock pin 168 of the baby infant unit 160 has a slightly different configuration from the lock pin 92 described above, and a groove 174 is formed on the back surface of the tip of the lock pin 168. Is formed. A block 176 is provided at a position corresponding to the groove 174 in the fixing hole 96 located above the holding lid 22 in FIG. Accordingly, the baby infant unit 160 is fixed to the fixing hole 9 located on the upper side.
Although it is possible for the lock pin 168 to be fitted to 6,
Seat back 1 when used as a child seat
6 lock pin 92 cannot enter this fixing hole 96. That is, in this position, only the rotation of the seat back 16 of the child seat is permitted.

Hereinafter, the operation of the present embodiment will be described in accordance with the growth of a child. When an infant from the age of 0 to less than 6 months is put on the vehicle, first, the operation of fixing the base portion 12 to the seat cushion of the vehicle and the operation of fitting the turntable 14 to the holding lid 22 are performed.

First, the base portion 12 is placed on a vehicle seat cushion. After mounting, the holding lid 2 of the base portion 12
2, the webbing 34 or the webbing 34 and the shoulder webbing 37 are locked to the webbing hook 26 and the webbing guide 28. Thereafter, the holding lid 22 is closed. In the closed state, the lock plate 46 of the operation knob 38 shown in FIG.
It is in a state of being engaged with the L-shaped plate 48 on the 0 side. Therefore, the pressing plate 54 does not protrude above the accommodation recess 58 of the turntable 14, and the turntable 1
4 can be fitted. When the holding lid 22 is closed, the fitting projection 32 is fitted into the fitting recess 30 as shown in FIG.
4 or lap webbing 34 and shoulder webbing 3
7 is pinched. With the above-described operation, the operation of fixing the base portion 12 to the seat cushion ends.

Next, the turntable 14 is fitted to the holding lid 22. In this state, the turntable 14 is rotatable.

When these operations are completed, first, the baby infant unit 160 is fixed to the turntable 14 in a state as shown in FIG. In addition,
The fixing operation is performed in the same manner when the seat is used as a child seat, and will be described in the description of the child seat.

After the baby infant unit 160 is fixed to the turntable 14, the operation lever 102 is pulled out from the position shown by the solid line in FIG. 6 to the position shown by the dashed line in FIG. 14 and can be rotated together. Thereafter, the baby infant unit 160 is rotated 90 degrees, and the operation lever 102 is returned to the original position. Thereby, the lock pin 168 is fixed to the upper fixing hole 9 in FIG.
6 is fitted. Finally, as shown in FIG. 12, the baby infant unit 160 is placed in a baby bed state. This state is a third use state. Note that, depending on the size of the vehicle seat and the baby infant unit 160, it is also possible to place the baby bed in advance and fix it to the turntable 14.

When the child grows up and is about six months to one year old and uses it as an infant seat, the baby infant unit 160 can be fixed to the turntable 14 while being bent at a predetermined angle. Good.

Further, when the child grows up and is about 1 to 4 years old and is used as a child seat,
The consumer only needs to purchase the seat back 16 and the seat cushion 18.

Then, first, the fixing portion 6 of the seat back 16 is
8 is fixed to the turntable 14. At this time, the seat back 16 is fixed to the base portion 12 from outside the vehicle compartment with the vehicle door open.

As shown in FIG. 5A, first, the fixing portion 68 is placed on the turntable 14 in an inclined state. Next, as shown in FIG. 5B, the protrusion 90 of the fixing portion 68 is engaged with the first engagement hole 60 of the turntable 14. Then, as shown in FIG. 5C, by pressing the fixing portion 68 as it is against the housing recess 58 of the turntable 14, the lock pin 92 is inserted into the fixing portion 68 against the urging force of the compression coil spring 94. When the bottom surface of the fixing portion 68 is retracted and abuts against the bottom surface of the housing recess 58 of the turntable 14, the lock pin 92 is fixed by the urging force of the compression coil spring 94 between the second engagement hole 62 of the turntable 14 and the holding lid 22. It penetrates the hole 96. Thus, the operation of fixing the seat back 16 to the turntable 14 is completed.

After the operation of fixing the seat back 16 to the turntable 14 is completed, the operation lever 102 is pulled out to the position shown by the dashed line in FIG.
Is directed to the outside of the vehicle. Then, the seat cushion 18 is connected to the seat back 16. At this time, the seat height of the seat cushion 18 is set according to the physique of the infant (1 to 4 years old). In the case of an infant with a high sitting height, the rail 1 of the block 112 of the seat cushion 18 is used.
14 is inserted into the lower groove 86 of the fixing portion 68, and in the case of an infant with a low sitting height, the rail 114 is inserted into the upper groove 84. If the vehicle interior space is large,
The seat cushion 18 may be connected to the seat back 16 without rotating the seat back 16.

Next, the buckle switch 77 is depressed to release the engagement between the crotch buck 74 and the crotch buckle 76. Thereafter, the crotch buckle 76 is tilted, and the infant is seated on the seat 110 of the seat cushion 18. When the crotch buckle 76 is folded down, the side support 118 is opened in conjunction therewith, so that the infant can easily be seated on the seat 110.

After the infant is seated on the seat 110, the crotch buckle 76 is raised, and the crotch buckle 76 and the crotching buckle 74 are engaged again. This allows
The infant is put on the infant belts 72, 73. This state is referred to as a first use state. Crotch buckle 76
Is raised, the side supports 118 also move in the direction of approaching each other, so that the restraint of the infant in the vehicle width direction can be improved.

After wearing the infant belts 72 and 73 for the infant,
The operating lever 102 is pulled out again to the position shown by the one-dot chain line in FIG. 6, and the seat back 16 is rotated and directed toward the front of the vehicle. As a result, the vehicle can be driven. When the infant is to get off the vehicle, an operation reverse to the above-described operation may be performed.

Next, the child grows further, and the child seat 1
When 0 is used as a junior seat, the seat back 16 is detached from the turntable 14 and only the base portion 12 and the seat cushion 18 are used.

First, the crotch buckle 76 is detached from the seat cushion 18. That is, after the engagement between the crotch buckle 76 and the crotching buck 74 is released, the crotch buckle 76 is tilted down from the state shown in FIG. 8 to the state shown in FIG. 9A. Next, the crotch buckle 76 is separated from the drum 122 in the order shown in FIGS. 9B and 9C. In the separated state, the side support 118 is opened to the state shown by the two-dot chain line in FIG. 10 so as to fit the physique of an infant (5 years old or older).

After the crotch buckle 76 is detached from the seat cushion 18, the seat cushion 18 is pulled out of the seat back 16. Next, the seat back 16
Is removed from the turntable 14. Seat back 1
The detachment operation from the turntable 14 of No. 6 may be performed in reverse to the fixing operation described above.

After the seat back 18 is detached from the turntable 14, the turntable 14 is detached from the holding lid 22. After detachment, the holding lid 22 is opened, and the lap webbing 34 is removed from the webbing hook 26 and the webbing guide 28. Thereafter, the holding lid 22 is closed and the rotating plate 24 is brought into the flat state. In this state, the rail 114 of the seat cushion 18 is locked by the pair of elastic holding claws 35 of the holding lid 22. Thereafter, the infant is seated on the seat portion 110 of the seat cushion 16 and is mounted while the lap webbing 34 of the vehicle is locked on the webbing hook 26. This state is the second use state. When a junior seat is placed in the passenger seat, 3
The infant is put on the webbing by both the lap webbing and the shoulder webbing of the point type seat belt device.

As described above, in this embodiment, the child seat 1
0 can be systematized, so that consumers can share the base unit 12 over a wide range from infants to infants, and as the child grows up, the baby unit attached to the base unit 12 can be used.
Only the upper components, such as the infant unit 160, the seat back 170, and the seat cushion 172, need to be sequentially replaced. Therefore, economy of the child seat 10 can be achieved. In this connection, if the consumer damages a part of the upper component or the lower component (for example, if the seat surface of the seat cushion 16 is damaged), it is possible to replace only the seat cushion 16. As a result, even if a part is damaged as in the related art, the economy can be improved as compared with a case where the whole must be replaced.

When used as a junior seat, the rotating plate 24 is attached to the seat 110 of the seat cushion 18.
Since the seating surface is substantially flush with the seating surface, the seating surface is substantially extended, so that the seating performance of the infant can be improved. When used as a child seat,
Since the rotating plate 24 is in the upright state, the seat back 16
The seat back of the vehicle is not hindered at the time of the fixing operation, and the state of contact with the seat back of the vehicle at this position can be a surface contact, so that there is no local damage to the seat back of the vehicle.

In this embodiment, the crotch buckle 7
Since the side support 118 opens and closes in conjunction with the tilt angle of 6, the sitting feeling of the child on the seat cushion 18 can be improved in accordance with the physique of the child. The side support 118 also has a function of preventing a displacement of a seating position due to a swing of the child in the vehicle width direction when the vehicle turns right or left. Further, since the worm gear 144 is used as a gear that meshes with the middle gear 142 in the interlocking configuration of the crotch buckle 76 and the side support 118, even when a relatively large load acts on the vehicle side from the side of the vehicle, the side support The angle of 118 can be maintained, and the inclination angle of the crotch buckle 76 does not shift. Further, the opening / closing angle of the side support 118 is changed between the case where the side support 118 is used as a child seat and the case where the side support 118 is used as a junior seat (when the seat is used as a child seat, the opening / closing around the state shown by the solid line in FIG. This is an angle, and when used as a junior seat, the opening / closing angle indicated by the two-dot chain line in FIG.

In this embodiment, since the seat back 16 is fixed to the base portion 12 at two places by the projecting portion 90 and the lock pin 92, the state after the fixing can be stabilized. it can. In addition, since the protruding portion 90 is fixed by the support plate 56 fixed to the reinforcing plate 40, it is possible to prevent the seat back 16 from moving up and down due to the movement of the child's upper body or the vibration of the vehicle. That is, the support plate 56 particularly suppresses the load acting on the seat back 16 from above the vehicle.

Further, in this embodiment, the seat back 16
The operation lever 102 is configured to operate the operation lever 102 in three stages of a fixed state to the base portion 12, a rotatable state of the seat back 16, and a detachable state of the seat back 16 from the turntable 14, so that the switching operation can be easily performed. can do. When the seat back 16 is detached from the turntable 14, the operation lever 102 is moved to one end 9.
Since the seat back 16 must be rotated by 0 degrees, the seat back 16 does not accidentally come off the turntable 14 when the seat back 16 is rotated, for example.

In this embodiment, the seat cushion 1
Although the example in which the height of the seat surface is adjusted by the relationship between the seat back 8 and the seat back 16 has been described, the present invention is not limited to this, and the height may be adjusted by moving the headrest 66 up and down according to the sitting height of the child.

Further, the child seat 10 in this embodiment is
Although the reclining mechanism is not provided, for example, the fixing portion 68 of the seat back 16 has a divided structure,
A reclining mechanism may be provided by keeping the lower side fixed to the turntable 14 and allowing the upper side to slide relative to the lower side.

Further, in this embodiment, the seat cushion 18 is fixed to the seat back 16, but the present invention is not limited to this.
May be configured to be fixed to the base 12.

[0072]

[Effect of the Invention] The child seat according to the present invention can be used widely according to the growth of the child, and the backrest and the base can be fixed, detachable and rotatable with a simple operation. It has an excellent effect of being able to be in a state.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a state in which a base, a turntable, a seat back, and a seat cushion of a child seat according to the present embodiment are separated.

FIG. 2 is a cross-sectional view showing a state in which a clamping lid is fitted into the base body of FIG. 1 and lap webbing and shoulder webbing are clamped and fixed.

3 is a perspective view showing a mechanism for fixing a holding lid to the base body of FIG. 1 and a press plate on a turntable side related thereto;

FIG. 4 is a plan view showing a state in which a turntable is fitted to the holding lid of FIG. 1;

5 (A), 5 (B) and 5 (C) are explanatory views for explaining an operation until the fixing portion of the seat back of FIG. 1 is fixed to the turntable.

FIG. 6 is a side view showing a configuration of a lock pin and an operation lever of FIG. 5;

FIG. 7 is a perspective view showing a drum provided on a crotch buckle and a seat cushion.

FIG. 8 is a cross-sectional view showing a state in which a hook of a crotch buckle is locked on a drum.

FIGS. 9A, 9B, and 9C are explanatory diagrams for explaining an operation of detaching a crotch buckle from a drum.

FIG. 10 is a perspective view showing an interlocking mechanism of a crotch buckle and a side support.

FIG. 11 is a side view showing a case where the sheet is used as a junior seat.

FIG. 12 is a front view when used as a baby seat.

FIG. 13 is a side view when used as an infant sheet.

FIG. 14 is a perspective view showing a lock pin of the baby infant unit.

FIG. 15 is a side view when the baby infant unit is used in a buggy state.

[Explanation of symbols]

10 Children's Seat 12 Base (Base) 14 Turntable (Rotating Member) 16 Seat Back (Back Support) 18 Seat Cushion (Seat) 24 Rotating Plate 160 Baby Infant Unit (Infant Seat)

Claims (1)

(57) [Scope of request for utility model registration] 1. A base mounted on a seat cushion of a vehicle, a rotating member rotatably supported by the base, and detachable from the rotating member so as to rotate integrally with the rotating member. A backrest portion having a fixing portion supported by the base, the seat, a seating portion detachably mounted to at least one of the fixing portion of the backrest portion, and a seating portion mounted to the fixing portion of the backrest portion; The fixed portion of the backrest is engaged with the base to fix the base and the base in a fixed state. base to a rotatable state, and by releasing the engagement between the base and the rotary member, the back of said rotary member and said base
Switching means for switching the fixing portion of the abutting portion so that the fixing portion can be detached, a child seat comprising: