JPH0642379U - Child seat - Google Patents

Abstract

(57) [Summary] [Purpose] An object is to obtain a child seat that has both a reclining function and a detachable function and can be simplified in structure. [Configuration] A pair of rollers 64 and a rod 66 are provided on the back surface of the child seat body 14, and these are mounted on the roller guide portion 42 and the rod guide portion 44 of the base 12, respectively. Therefore, the child seat body 14 can be reclined. The child seat body 14 can be detached from the base 12 by tilting up the child seat body 14 or by sliding the child seat body 14 to the highest position.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a child seat attached to a seat cushion of a vehicle seat.

[0002]

[Prior art]

 Traditionally, children's seats have been used to seat a child in the passenger seat or rear seat of a vehicle. There are various types of children's seats, and among them, those having a reclining mechanism for tilting the body of the children's seat with respect to the base by a predetermined angle have already been devised. In addition, not only is a child seat equipped with a reclining mechanism, but a child seat body that is detachable from the base has also been devised.

[0003]

[Problems to be solved by the device]

 However, in the above-described child seat, the reclining mechanism and the attachment / detachment mechanism are separately configured. For this reason, not only the strength member dedicated to the reclining mechanism is required, but also the strength member dedicated to the attachment / detachment mechanism is required. Therefore, there is a problem that the number of parts increases and the structure becomes complicated. Since the number of parts will increase, the manufacturing cost will also increase.

In consideration of the above facts, an object of the present invention is to obtain a child seat that has both a reclining function and a detachable function and can be simplified in structure.

[0005]

[Means for Solving the Problems]

 A child seat according to the present invention comprises a base fixed to a seat cushion of a vehicle seat, a child seat body detachably attached to the base, and a relative movement of the child seat body with respect to the base. A reclining mechanism for changing the tilting angle of the child seat body with respect to the base, thereby moving the child seat body relative to the base to a predetermined position by using the reclining mechanism. Thus, the child seat body can be detached from the base.

[0006]

[Action]

 According to the above configuration, the reclining mechanism is used to relatively move the child seat body to a predetermined position with respect to the base, whereby the child seat body is separated from the base. That is, according to the present invention, the reclining mechanism is also used as the attaching / detaching mechanism for the base of the child seat body. Therefore, the strength member may be provided only for the reclining mechanism. Therefore, the number of parts of the strength member is reduced. In addition, this can also simplify the structure of the child seat.

[0007]

【Example】

 The child seat 10 to which the present invention is applied will be described below with reference to FIGS. 1 to 9. This child seat 10 is an infant seat (abbreviated as IRS) for carrying infants aged 6 months to under 1 year old, and a child seat for infants from 1 year old to under 4 years old. (Abbreviated as CRS) can be used.

As shown in FIGS. 1 and 2, the child seat 10 is composed of a base 12 and a child seat body 14 mounted on the base 12. 1 shows the base 12 and the child seat body 14 in a separated state, and FIG. 2 shows a normal use state in which the child seat 10 is fixed to the seat cushion 16A of the vehicle seat 16. Is shown. Hereinafter, the child seat body 14, the base 12, the reclining mechanism, and the attaching / detaching mechanism will be described in this order.

[Description of Child Seat Body 14] The child seat body 14 includes a curved shell 18 that matches the average posture of a seated child. The shell 18 is relatively rigid and made of resin, and the shell 18 serves as a skeleton member of the child seat body 14.

A relatively thick cushion pad made of urethane or the like and covered with a skin material is arranged on the lower surface of the shell 18. A relatively thin back pad formed of urethane or the like and covered with a skin material is arranged on the upper surface of the shell 18. As a result, the seat back and the seat cushion are integrally formed. Further, in the child seat body 14, side support support portions 18A are integrally formed on both sides of the lower portion of the shell 18. A webbing insertion hole 19 is formed in the side support support portion 18A, and side supports 20 for supporting both sides of the waist of the child are fitted therein.

A headrest 22 is provided at the upper end of the shell 18. The headrest 22 is provided so as to be slidable in the height direction of the shell 18 by a predetermined amount. When the headrest 22 slides, the headrest lower pad 24 integrally provided on the headrest 22 also slides.

A pair of child restraint belts 26 are inserted through the central portion of the headrest 22. The child restraint belt 26 is bifurcated at the middle portion in the longitudinal direction. The base end portion of the child restraint belt 26 is wound around an ELR type webbing retractor (not shown) disposed below the shell 18, and a tongue plate 28 is attached to the tip end of the bifurcated portion. Each is installed. These tongue plates 28 are engaged with a crotch bag 30 which is provided upright near the front end of the seat cushion of the shell 18.

[Description of Base 12] On the other hand, as shown in FIG. 5, the base 12 is a base portion 12A which is a portion to be mounted on the seat surface of the seat cushion 16A of the vehicle seat 16, and the base portion 12A. The standing portion 12B is erected from the rear end portion and pressed against the surface of the seatback 16B. Then, the base 12 is fixed by using the three-point webbing 32 of the vehicle seat 16 at a portion where the base portion 12A and the standing portion 12B meet. That is, after the shoulder side webbing 32A and the lap side webbing 32B are locked by the E-clip 34 and overlapped with each other, the shoulder side webbing 32A and the lap side webbing 32B are hung on the upper end surface of the base 12 as they are, and the tongue plate 36 is engaged with the buckle device 38. By doing so, the base 12 is fixed to the seat surface of the seat cushion 16A.

[Description of Reclining Mechanism and Attachment / Detachment Mechanism] The child seat body 14 described above is configured to be tiltable by a predetermined angle with respect to the base 12, and the reclining mechanism for that purpose will be described in detail below. .

A pair of rail portions 40 are formed on both sides of the base 12 described above. The rail portion 40 is curved at a predetermined angle. The pair of rail portions 40 are generally constituted by a roller guide portion 42 and a rod guide portion 44.

The roller guide portion 42 is provided on the base portion 12A side of the base 12. Each roller guide portion 42 is formed in a U-shaped cross section by the bottom surface of the base 12, an inner side surface, and a guide wall extending from the upper end of the inner side surface in a direction toward each other. As a result, the roller guide groove 42A is formed in the roller guide portion 42. A pair of rollers 64 of the child seat body 14 described later are rotatably fitted into these roller guide grooves 42A. The front end portion of the roller guide portion 42 is closed by a substantially arcuate wall 46 corresponding to the outer diameter of the roller 64.

On the other hand, the rod guide portion 44 is provided on the standing portion 12 B side of the base 12. As shown in FIG. 7, each rod guide portion 44 is a frame 52 in which an iron plate is bent in a U shape and is fixed to the upright portion 12B of the base 12 with bolts 48 and nuts 50, and is fitted into the frame 52. And a resin guide member 54. A rod guide groove 44A having a groove width slightly larger than the outer diameters of a pair of rods 66 of the child seat body 14 to be described later is formed in the middle portion of the guide member 54. Further, a plurality of rod fitting holes 56 and 57 are coaxially formed at predetermined intervals on the bottom surface of the rod guide groove 44A and the frame 52, respectively. The rod 66 is selectively fitted into any of the plurality of rod fitting holes 56 and 57. Further, the upper end portion of the rod guide portion 44 is expanded in diameter to form an open portion 58 (see FIGS. 4 and 5).

As shown in FIG. 6, a substantially rectangular bulging portion 60 is formed on the upper side of the back surface of the child seat body 14, and a protruding portion 62 is formed on the lower side thereof. ing . A pair of rollers 64 are axially supported by the protrusion 62, and are fitted into the roller guide groove 42A of the roller guide portion 42 described above so that the roller 64 can roll along the roller guide groove 42A. A pair of rods 66 are coaxially projected at the lower end portion of the bulging portion 60, and can be selectively fitted into the rod fitting holes 56 and 57 of the rod guide groove 44A of the rod guide portion 44 described above. It is said that.

The pair of rods 66 described above pulls the operation knob 70 (see FIG. 1) arranged in the opening 68 provided at the front end of the child seat body 14 to pull the inside of the bulging portion 60. It is configured so as to be retracted by a predetermined amount into the rod fitting hole 56 and will be briefly described below.

As shown in FIGS. 7 and 8, an L-shaped lever 72 is connected to each rod 66. The pair of levers 72 are pivotally supported by a pivot pin 74 at their bent portions. Further, long holes 76 are formed at one end of the lever 72, and a pulling pin 78 is inserted into these long holes 76. The tow pin 78 penetrates the rod 66 in the direction perpendicular to the axis. As a result, the rod 66 and the lever 72 are connected. A compression coil spring 83 is interposed between the pair of traction pins 78. Therefore, the compression coil spring 83 presses and urges the pair of rods 66 in the direction in which they are separated from each other (that is, in the direction in which the pair of rods 66 are fitted into the rod fitting holes 56, 57).

Further, a long hole 80 is formed at the other end of the lever 72, and a connecting pin 82 is loosely fitted in a state where these long holes 80 are superposed. A wire 86 of a cable 84 locked by a clamp 83 between the levers 72 is wound around the outer periphery of the connecting pin 82. As a result, the pair of levers 72 and the wire 86 are connected. In addition, one end of the cable 84 is connected to the operation knob 70. Therefore, when the operation knob 70 is pulled, the wire 86 of the cable 84 is pulled in the direction of arrow A in FIG. 8, and the pair of levers 72 is rotated in the direction of arrow B in FIG. As a result, the pulling pin 78 pulls the rods 66 in directions toward each other against the biasing force of the compression coil spring 83.

By the way, a cutout portion 88 is formed in each of the connecting portions between the pair of roller guide portions 42 and the rod guide portion 44 described above. The notch width of each notch 88 is larger than the outer diameter of the roller 64. Therefore, by positioning the roller 64 in the cutout portion 88, the roller 64 can be separated from the roller guide portion 42.

An arcuate retreat groove 90 is formed in the pair of rod guide portions 44 near the ends on the side of the cutout portion 88. The groove width of these retracting grooves 90 is slightly larger than the outer diameter of the rod 66. Therefore, by positioning the rod 66 in the retreat groove 90, the rod 66 can be separated from the rod guide portion 44.

Then, when the pair of rollers 64 is located at the front end of the roller guide groove 42 A, the pair of rollers 64 is located at the notch 88 so that the pair of rods 66 is located at the base end of the retracting groove 90. The length between the roller 64 and the rod 66, the length of the roller guide portion 42, and the length of the rod guide portion 44 are set so that the pair of rods 66 are positioned in the open portion 58 when positioned.

The operation of this embodiment will be described below. First, a case where the child seat 10 is used as a child seat will be described.

First, the operation of mounting the child seat 10 on the seat cushion 16A of the vehicle seat 16 is performed in the following procedure.

When the child seat body 14 is already attached to the base 12 and is fixed to the seat cushion 16A, the child seat 10 is first placed on the seat surface of the seat cushion 16A. Next, it is confirmed whether or not the reclining position is set to the lowest position, and when it is set to the lowest position, the operation knob 70 is gripped and pulled. As a result, the pair of rods 66 are slightly retracted into the bulging portion 60, so that the engagement state between the pair of rods 66 and the rod fitting hole 56 of the frame 52 is released.

Next, as shown in FIG. 4, with the pair of rollers 64 located at the front end position (position of the wall 46) of the roller guide groove 42A as the center of rotation, the child seat body 14 is moved by the arrow C in FIG. It is rotated in the direction (hereinafter referred to as "tilt up"). As a result, the tip portions of the pair of rods 66 are separated from the rod guide portion 44 while passing through the retracting groove 90. In this state, the space above the base 12A of the base 12 is sufficiently secured.

Next, in this state, the base 12 is fixed to the seat surface of the seat cushion 16A using the adult webbing 32. That is, after the shoulder side webbing 32A and the lap side webbing 32B are overlapped with each other, they are locked using the E-clip 34 and then the upper end surface of the base 12 is bridged to engage the tongue plate 36 with the buckle device 38. Let As a result, the base 12 is securely fixed to the seat surface of the seat cushion 16A.

Then, the child seat body 14 in the tilted-up state is returned to its original state. When the operating knob 70 is released after the return, the pair of rods 66 are pressed by the biasing force of the compression coil spring 83 in the direction in which they are separated from each other, and are inserted into the predetermined rod insertion holes 56, 57. As described above, the operation of mounting the child seat 10 on the seat cushion 16A is completed.

In the above-described operation of mounting the child's seat 10, only the base 12 is first fixed to the seat cushion 16A, and then the child's seat body 14 is mounted, regardless of the above procedure. It may also depend on the procedure.

Next, the reclining operation will be described. To change from a given reclining position to another reclining position, follow the procedure below.

First, the operation knob 70 is pulled to release the engagement state between the pair of rods 66 and the rod fitting hole 56. When the operation knob 70 is pulled, the pulling pin 78 is pulled in the direction of arrow A in FIG. 7 via the wire 86. Therefore, the pair of levers 72 are rotated in the direction of arrow B in FIG. 7, whereby the pair of rods 66 are pulled in a direction in which they approach each other against the biasing force of the compression coil spring 83. Therefore, the engagement state between the pair of rods 66 and the rod fitting hole 56 is released.

Next, the child seat body 14 is slid along the rail portion 40 to a desired position. More specifically, with the pair of rollers 64 fitted in the roller guide groove 42A of the roller guide portion 42, and with the pair of rods 66 fitted in the rod guide groove 44A of the rod guide portion 44. The child seat body 14 is slid.

Then, when the child seat body 14 is slid to a desired position, the operation knob 70 is released. As a result, the pair of rods 66 are pushed by the biasing force of the compression coil spring 83 in the directions in which they are separated from each other, and are fitted into the rod fitting holes 56 and 57. As a result, the reclining position of the child seat body 14 is changed to an optimal position according to the physique of the child.

After the reclining angle of the child seat body 14 is adjusted as described above, the child is seated on the child seat body 14. Thereafter, the tongue plate 28 of the child restraint belt 26 is engaged with the crotch buckle 30. As a result, the child is restrained by the child restraint belt 26. In this state, when the vehicle suddenly decelerates, the load acting on the child restraint belt 26 due to the inertial movement of the child toward the vehicle front side is transmitted from the child seat body 14 to the frame 52 of the base 12, and It is transmitted to the vehicle body through the webbing 32 that fixes the base 12.

Next, an operation of separating the child seat body 14 from the base 12 will be described. Note that this operation is required, for example, when the vehicle is parked and the child seat body 14 is attached to a buggy car to carry an infant. The detaching operation will be described below, but there are two ways to detach.

The first method is as follows. First, the child seat body 14 is tilted up. That is, by pulling the operation knob 70, the engagement between the pair of rods 66 and the rod fitting holes 56 is released, and the child seat body 14 is slid along the rail portion 40 to the lowest position. Next, the child-use seat body 14 is rotated in the direction of arrow C in FIG. 4 with the pair of rollers 64 as the center of rotation. As a result, the rod 66 passes through the retreat groove 90 and separates from the rod guide groove 44A.

Next, while maintaining the tilt-up state, the child seat body 14 is slid rearward along the pair of roller guide portions 42. The sliding amount is set until the pair of rollers 64 located on the wall 46 is located at the cutout portion 88. Then, when the pair of rollers 64 reach the notch 88, the pair of rollers 64 is separated from the notch 88. As a result, the child seat body 14 is separated from the base 12.

The second method is as follows. First, the child seat body 14 is slid to the highest position by the above-described reclining operation. In this state, the pair of rods 66 are located in the open portion 58 and the pair of rollers 64 are located in the cutout portion 88. Therefore, as shown in FIG. 3, if the child seat body 14 is slightly lifted as it is, the child seat body 14 is disengaged from the pair of rail portions 40.

Next, a case where the child seat 10 is used as an infant seat will be briefly described.

In this case, the base 12 is not used and only the child seat body 14 is used. Then, as shown in FIG. 9, the child seat body 14 is fixed to the seat cushion 16A of the vehicle seat 16 in a state of facing backward so that the seated infant faces the rear of the vehicle. The fixing operation is performed by inserting the webbing 32 into the webbing insertion hole 19 provided in the side support supporting portion 18A of the shell 18 and engaging the tongue plate 36 with the buckle device 38.

As described above, in this embodiment, the child seat 10 is configured by the base 12 and the child seat body 14 and is configured to be detachable by using the reclining mechanism, that is, the reclining mechanism is also used as the detaching mechanism. Therefore, the strength member only needs the frame 52 for the reclining mechanism. Therefore, the number of parts can be reduced and the structure can be simplified. Furthermore, the cost can be reduced. In addition, since the attachment / detachment operation can be performed compactly in the passenger compartment, the operability can be improved.

Further, in the present embodiment, by tilting up the child seat body 14, the base 14 can be fixed to the seat surface of the seat cushion 16A by the webbing 32, so that the webbing 32 can be wound. The base 12 can be easily fixed by the webing 32 after the position is set to the optimum position. This point will be described in more detail. In general, for children's seats, the position where the webbing is wound around the base should be closer to the waist of the occupant (child). This is because if the webbing wrapping position is farther from the occupant's waist, the momentum acting when the occupant inertially moves during sudden vehicle deceleration increases and the occupant restraint performance deteriorates. Therefore, the upper end surface of the base (= the position around which the webbing is wound) is better to be higher, and the seating surface of the child seat body 14 is better to be lower. If the webbing insertion holes are provided so as to satisfy such conditions, only the insertion holes (gap) with a small width can be provided. However, in this embodiment, since the child seat body 14 can be tilted up, a sufficient space above the base 12 can be secured. Therefore, it is possible to easily fix the base 12 with the webbing 32 after setting the winding position of the webbing 32 to the optimum position.

Further, in the present embodiment, the child seat body 14 is configured to be attachable to and detachable from the base 12, so that when the seat cushion 16A of the vehicle seat 16 is fixed, only the base 12 is first attached. It may be fixed by the webbing 32, and then the child seat body 14 may be attached to the base 12, and in this case, the child seat body 14 may be separately carried into the vehicle compartment. Therefore, in this case, it can be put in and taken out in a state of being downsized accordingly.

In the present embodiment, the child seat body 14 is separated from the base 12 by tilting it up and then separated, and the reclining position is set to the highest position and then separated. Although the method has been described, the present invention is not limited to this, and the present invention can be applied to any structure as long as the child seat body 14 can be detached from the base 12 by using a reclining mechanism.

[0047]

[Effect of device]

 As described above, in the child seat according to the present invention, the child seat body can be detached from the base by relatively moving the child seat body to the predetermined position with respect to the base by using the reclining mechanism. It has an excellent effect that the structure can be simplified while having both the reclining function and the attachment / detachment function.

[Brief description of drawings]

FIG. 1 is a perspective view showing a state where a child seat body and a base are separated from each other.

FIG. 2 is a perspective view showing a normal use state when the child seat of FIG. 1 is used as a child seat.

FIG. 3 is a perspective view showing a case where the child seat body is moved from the normal use state of FIG. 2 to the reclining highest position and then separated from the base.

FIG. 4 is a perspective view showing a case where the child seat body is tilted up from the normal use state of FIG. 2 and then separated from the base.

FIG. 5 is a perspective view showing a fixed state of a base to a seat cushion.

FIG. 6 is a rear view showing the child seat body as viewed from the rear side.

7 is a cross-sectional view taken along line 7-7 of FIG. 6 showing a part of the reclining mechanism centered on a pair of rods.

8 is a sectional view taken along line 8-8 of FIG.

9 is a perspective view showing a use state when the child seat shown in FIG. 1 is used as an infant seat. FIG.

[Explanation of symbols]

 10 Children's Seat 12 Base 14 Children's Seat Main Body 16 Vehicle Seat 16A Seat Cushion 40 Rail Part (Reclining Mechanism and Attachment / Detachment Mechanism) 58 Opening Part (Detachment Mechanism) 64 Roller (Reclining Mechanism and Attachment / Detachment Mechanism) 66 Rod (Reclining Mechanism and Attachment / Detachment Mechanism) Attachment / detachment mechanism 88 Notch (attachment / detachment mechanism) 90 Evacuation groove (attachment / detachment mechanism)

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Amano Norihiro Amano Noda No. 1 Toyoda, Oguchi-cho, Niwa-gun, Aichi Prefecture Tokai Rika Electric Co., Ltd.

Claims (1)

[Scope of utility model registration request] 1. A base fixed to a seat cushion of a vehicle seat, a child seat body detachably attached to the base, and a child seat body that is moved relative to the base. A reclining mechanism for changing a tilt angle of the child seat body with respect to the base; and using the reclining mechanism to relatively move the child seat body to a predetermined position with respect to the base, A child seat, wherein the seat body is detachable from the base.