WO2012014559A1

WO2012014559A1 - Child seat

Info

Publication number: WO2012014559A1
Application number: PCT/JP2011/061945
Authority: WO
Inventors: 中川　治; 礼吉積
Original assignee: タカタ株式会社
Priority date: 2010-07-24
Filing date: 2011-05-25
Publication date: 2012-02-02
Also published as: KR20140005129A; CN103025570B; KR101807636B1; JP5603694B2; CN103025570A; JP2012025289A

Abstract

A base stand (20) having legs (22) that provide support on both sides is attached to a stiffened member formed by integrating an arm (11), a base (12), and an intermediate part (13), which hold the back surface and bottom of a shell that restrains an infant in a seat cushion via a restraining means. The base stand (20) is rotated according to the form in which the child seat (1) is attached on a passenger seat, and the legs (22) are moved along the outer edge of the stiffened member, and adjusted to a form in which the child seat (1) is attached on the passenger seat facing forward, or a form in which the child seat (1) is attached facing backward. The base of the child seat (1) is constituted by the legs (22) of the base stand (20), and portions (12a, 13a) of the edge of the stiffened member, and stabilizes the child seat (1) when securing the child seat (1).

Description

child seat

The present invention relates to a child seat, and more particularly to a child seat that can be attached to a seat of a vehicle or the like in order to safely restrain an infant's body in the vehicle.

Conventionally, child seats have been used to safely restrain an infant's body in a vehicle. The child seat has a method for attaching to the seat according to the standard according to the weight of the target infant and the approximate age.

Under the current standards (for example, EC standards), the child seat is attached to the vehicle seat backwards until the subject's weight is less than 13 kg (approximately 9 months from the newborn), and then until around 4 years old (weight 13-18 kg) In the meantime, it is prescribed that it should be installed in a forward direction. For this reason, in the child seat assumed to be used from a newborn to about 4 years old, various devices have been devised so that the child seat can be stably attached to the vehicle seat in each attachment mode.

For example, in a high-grade child seat, the child seat body is held via a reclining mechanism on a relatively large base that is in close contact with the seat surface. In this type of child seat, a reclining mechanism is used on a base placed in a different direction on the seat of the vehicle, and an appropriate reclining angle is set according to the mounting manner such as forward and backward, respectively. The main body can be fixed, and an appropriate restraint posture for infants can be secured.

The above-mentioned child seat has a large number of parts that constitute the reclining mechanism, resulting in high manufacturing costs. Moreover, since the stable large base which is not influenced by the mounting direction is provided, the weight of the child seat is also heavy. On the other hand, various proposals for stably attaching a child seat as a popular product to a vehicle seat have been made.

The development point of popular child seats is to secure a wide bottom of the child seat at each mounting position. As a child seat focusing on this point, a proposal has been made in which a detachable block-shaped leg portion is rotated around a pivot axis in accordance with the mounting direction to change its position (Patent Document 1).

There is also a child seat that effectively prevents the child seat from rotating forward about the front end of the fixed point due to a frontal collision that occurs when facing forward, and that can secure a large bottom surface of the child seat even when installed backward. It has been proposed (Patent Document 2).

No. 6-7972 JP 2006-151299 A

In the auxiliary seat disclosed in Patent Document 1, which changes the orientation of the two block-shaped leg portions to correspond to the change in the child seat mounting position, the end surface of the rib 43 is inclined to the opposing surface 53 of the leg portion 51. In order to make contact with the surface 55, the flat portion 45, 46 must be provided and the inside must be stiffened. Further, since the leg portions 51 are independently provided at predetermined positions of the respective ribs 43, it is necessary to sufficiently reinforce the periphery of the two notches 47 into which the engaging protrusions 56 of the leg portions are fitted.
Thus, in the child seat disclosed in Patent Document 1, it is necessary to ensure sufficient rigidity for the ribs 43. For this reason, there is a problem that the internal structure of the rib 43 becomes complicated and the molding operation becomes difficult.

On the other hand, in the child seat disclosed in Patent Document 2, the support leg 6 has sufficient rigidity to increase the stability of the front surface of the bottom of the child seat, but the upper surface is exposed as a part of the product. The upper surface of the is finished in a smooth shape that is continuous with other parts, and a hollow portion for operating the central reclining mechanism is formed. However, in order to install the child seat backward, as shown in FIGS. 2 and 4, the upper surface is inverted to become the bottom surface, and constitutes the bottom surface of the child seat together with the second contact portion 4 b. Therefore, in the state in which this member is reversed, as shown in FIG. 2, the contact surface on the seat can be secured, but the flatness of the bottom surface of the child seat cannot be secured.
For this reason, the stability when the child seat is fixed is lacking. Moreover, since the inverted member overlaps on the base, there is a problem at the time of use that the seat surface of the child seat becomes high and it becomes difficult for the infant to get on and off.
Therefore, the object of the present invention is to solve the problems of the above-described conventional technology, and can substantially utilize the configuration of the arm-shaped rib formed on the conventional child seat, and can provide a stable installation state regardless of the mounting direction. It is to provide a child seat that can be secured.

In order to achieve the above object, the present invention provides a shell in which a side on which an infant is seated is covered with a seat cushion, and restrains the infant in the seat cushion via a restraining means, and a stiffening member that holds the back and bottom of the shell. A child seat that is fixed to a passenger seat via a seat belt, wherein the stiffening member is continuous with two arms that hold the shell from the back side, and a lower end of the arm via an intermediate portion. A base stand having a leg portion integrally formed on both side portions of the main body is rotatably supported between the two arms, and the base stand is pivotally supported according to the mounting manner on the passenger seat. The base stand is rotated to move the leg portion along the outer edge of the stiffening member, and the bottom surface of the child seat suitable for each mounting mode is placed on the leg portion and the stiffening member. Characterized in that so as to constitute at the part of the edge of the wood.

The mounting mode includes a mode of mounting forward on the occupant seat and a mode of mounting rearward. In the mode of mounting forward, the leg portion is positioned at the rear end of the base to form the child seat bottom, It is preferable that the base stand is rotated to the lower end side of the arm, and the leg portion after movement and a part of the edge portion of the intermediate portion constitute the bottom surface of the child seat.

The leg is formed with a support rib in contact with an edge of the stiffening member, and the base stand is rotated according to each mounting mode, so that the support rib of the leg is the stiffening member. It is preferable to bear a portion of the load and to bear a part of the load acting on the child seat.

It is preferable that the support rib of the leg part holds a part of the edge part of the arm inner surface plate of the stiffening member.

It is preferable that the base stand has a rotation pin formed on the outer surface of the main body, and is pivotally supported by the arm inner surface plate.

According to the present invention, by attaching a compact stand to a part of the member for stiffening the shell of the child seat, a part of the bottom surface of the child seat is secured by the leg portion of the stand. Thus, the child seat can be easily fixed to the passenger seat in a forward-facing and backward-facing manner.

The rear view which showed the child seat of this invention. The side view which showed the child seat of this invention. The front view which showed the base stand integrated in the child seat of this invention. The side view which showed the base stand integrated in the child seat of this invention. The rear view which showed the base stand integrated in the child seat of this invention. The side view including the partial cross section figure of the base stand integrated in the child seat of this invention. Explanatory drawing which showed the state which attached the child seat shown to FIG. 1A and FIG. 1B to the vehicle seat forward. Explanatory drawing which showed the state which attached the child seat shown to FIG. 1A and FIG. 1B back to the vehicle seat. Explanatory drawing which showed the state which hold | maintained the child seat forward by the shell and arm which comprise the child seat shown to FIG. 1A and FIG. 1B, and the base stand attached to the arm. Explanatory drawing which showed the state which hold | maintained the child seat backward by the shell and arm which comprise the child seat shown to FIG. 1A and FIG. 1B, and the base stand attached to the arm. The elements on larger scale which expanded and showed the holding | maintenance state to the arm of the base stand shown to FIG. 4A and 4B.

Hereinafter, as embodiments for carrying out the child seat of the present invention, the following examples will be described with reference to the accompanying drawings.

1A is a rear view showing a state in which the child seat 1 of the present invention is placed on a flat surface, and FIG. 1B is a side view showing a state in which the child seat 1 of the present invention is placed on a flat surface. . This state normally corresponds to a state in which the child seat is attached to the vehicle seat in a forward direction. FIG. 1B shows a state in which the side of the synthetic resin shell 3 on which an infant (not shown) sits is covered with the seat cushion 2.

As shown in FIG. 1A, a stiffening member 10 is attached to the back side of the shell 3 so as to support the shell 3. The stiffening member 10 has two arms 11 for supporting the shell 3 formed with a space capable of accommodating infants from the back side, and the curved shell 3 is stably placed on the seat surface at the lower part of each arm 11. And the base 12 installed in the base, and these are integrated with each other through the intermediate portion 13 to support the shell 3. In FIG. 1B, the members provided on the shell 3 and the arm 11 such as a belt guide for holding the seat belt in a proper position are not shown for the sake of simplification of the drawing.

As shown in FIG. 1B, the stiffening member 10 is integrally formed with an arm 11 arranged in the longitudinal direction on the back surface of the shell 3, a base 12 that supports the bottom of the shell 3, and an intermediate portion 13 that connects the two. This is a resin product made of the same material as that of the shell 3 which is substantially J-shaped as viewed from the side, and is made of a molded product such as polypropylene.

As shown in FIG. 1A, each arm 11 is composed of two outer plates 11a, two inner plates 11b, and a plurality of ribs 11c connecting them. The ribs 11c are arranged at predetermined intervals along the longitudinal direction of the arm 11, play a role of integrating the outer plate 11a and the inner plate 11b, and give each arm 11 sufficient rigidity and strength.

The bottom surface 12a of the base 12 is substantially flat as shown in FIG. 1B, and the child seat 1 can be stably placed on the seat surface of the vehicle seat. A base stand 20 is pivotally supported on the inner surface plate 11 b of the arm 11 at the intermediate portion 13 via a rotation pin 23. The base stand 20 has one surface of a leg portion (which will be described later) that is substantially flush with the bottom surface 12a of the base 12 at the lower end of the arm 11 as shown in each drawing of FIG. Act as part of

Here, the configuration of the base stand 20 will be described with reference to FIGS. 2A is a front view of the base stand 20, FIG. 2B is a side view of the base stand 20, FIG. 2C is a rear view of the base stand 20, and FIG. 2D is a cross-sectional view taken along the line IId-IId of the base stand 20. It is a side view including a partial sectional view. The base stand 20 includes a stand main body 21 and leg portions 22 integrally formed on both side surfaces of the stand main body 21. Both the stand main body 21 and the leg portion 22 are formed of synthetic resin molded parts in which

exterior plates

21a and 22a and lattice-shaped

stiffening ribs

21b and 22b formed therein are integrally formed. Polypropylene or the like is suitable as the resin, but various resin materials can be used as long as they satisfy the strength and durability as a base stand and are appropriate in terms of molding workability and cost.

As shown in FIGS. 2A and 2B, the stand main body 21 is a flat box-shaped body having a substantially trapezoidal shape when viewed from the side along the line IIb-IIb, and the width thereof is as shown in FIG. It is substantially equal between the inner surface plates 11b of the two arms 11. On both outer surfaces of the upper part of the stand main body 21, there are formed a rotation pin 23 having a cylindrical protrusion shape with a predetermined diameter and virtually forming a rotation axis, and a lock pin 24 having a smaller diameter than the rotation pin 23. Yes. At this time, the width of the stand main body 21 is substantially equal to the extent that it fits between the inner surface plates 11 b of the two arms 11. For this reason, the rotation pins 23 formed on both side surfaces of the stand main body 21 are virtually rotated in a state where the rotation pins 23 are fitted in bearing holes (not shown) formed between the inner surface plates 11 b of the arm 11. Functions as an axis. The stand body 21 is supported by the two arms 11 so as to be rotatable around the rotation pin 23.

As shown in FIG. 2A, the leg portion 22 is a member formed of a box-like body having a substantially trapezoidal shape when viewed from the side, and is integrally formed on the lower portion of the side surface of the stand body 21. The width of the leg portion 22 is substantially equal to the width between the outer surface plate 11 a and the inner surface plate 11 b of the arm 11. Further, as shown in FIGS. 2C and 2D, support ribs 25 having a shape different from the lattice-shaped stiffening ribs 22 b are formed on the stand main body 21 side of the internal space of the leg portion 22. As will be described later (see FIG. 5), the support rib 25 supports the load applied from the arm 11 by the lower end of the inner surface plate 11b of the arm 11 coming into contact with a predetermined support surface when the base stand 20 is supported. Fulfill. For this reason, the shape of the support rib 25 is set so that a part of the support rib 25 abuts against the lower end of the arm 11 in the case where the child seat 1 is attached forward to the seat and the case where the child seat 1 is attached backward. In the present embodiment, as shown in FIG. 2D, the shape of the support rib 25 has two

support surfaces

25a and 25b, and is substantially S-shaped in side view. In addition, the shape can be appropriately determined in consideration of workability and strength, as long as two support positions (surfaces) are functionally secured.

The lock pin 24 is a cylindrical protrusion having a smaller diameter than the rotation pin 23 and provided between the rotation pin 23 on the side surface of the stand main body 21 and the mounting position of the leg portion 22. The lock pin 24 is fitted into a holding hole (not shown) formed in the arm 11 when the base stand 20 is rotated about the rotation pin 23 and rotated to the above-described two support positions. The base stand 20 serves to fix the base stand 20 to each support position. In this embodiment, when the base stand 20 is rotated, the lock pin 24 moves while the tip of the lock pin 24 abuts the inner surface of the arm 11 and slightly deflects the lower end of the arm 11 to hold the holding hole at the support position. And is locked.

Hereinafter, with reference to FIGS. 3A and 3B, an attachment mode in which the direction of attaching to the passenger seat of the child seat 1 using the base stand 20 is directed forward and backward will be described. In each figure of FIG. 3, the outer surface plate 11a of the arm 11 and the base 12 is shown like FIG. 1B. The child seat 1 is fixed to the seat using a seat belt provided corresponding to each seat, but in the figure, illustration is omitted for the sake of simplification.

For example, when the child seat 1 is attached forward, the base stand 20 is positioned at a support position where the bottom surface 22c of the leg portion 22 of the base stand 20 is substantially flush with the bottom surface 12a of the base 12, as in FIG. 1B. In this state, the rear surface of the arm 11 is brought into contact with the backrest 51 of the seat 50, and the child seat 1 is fixed on the seat 50 using a seat belt (not shown).

On the other hand, when mounting backward, the base stand 20 is rotated around the rotation pin 23 from the position of FIG. 1B so that the front surface 22d of the leg portion 22 of the base stand 20 becomes a new bottom surface. At this time, the lower end of the arm outer surface plate 11a and the outer edge 13a of the intermediate portion 13 between the arm outer surface plate 11a and the base 12 are substantially flush with each other to form a new bottom surface. In this state, the foot side of the child seat 1 is brought into contact with the backrest 51 of the seat 50, and the child seat 1 is fixed on the seat 50 using a seat belt (not shown) as shown in FIG. 3B.

Next, an aspect in which the leg portion 22 of the base stand 20 supports a part of the arm 11 inner surface plate 11b will be described with reference to FIGS. 4A and 4B and FIG. 4A and 4B show a state in which the seat cushion of the child seat 1 is removed and the shell 3 is supported by the arm 11 and the base 12 along the sectional line IVa-IVa in FIG. 1A. FIG. 5 is an enlarged view of the positional relationship between the arm 11 inner surface plate 11b and the support rib 25 in the leg portion 22 of the base stand 20 in each attachment state of the child seat 1 (forward and backward).

The outer shape of the intermediate portion 13 between the lower end of the arm 11 inner surface plate 11b and the base 12 supports the rotation pin 23 of the stand body 21 of the base stand 20 (shown in phantom lines in FIGS. 4 and 5). It comprises a substantially semicircular edge 14 centered on the bearing hole and substantially V-shaped

edges

15 and 16 continuous on both sides thereof (FIGS. 4A and 4B). In the state of being attached forward (FIG. 4A), the support rib 25 of the leg portion 22 abuts on the lower end of the substantially V-shaped edge portion 15 on the lower side of the edge portion 14, and part of the load of the child seat 1 is at the leg portion 22. Supported. On the other hand, in the state of being attached rearward (FIG. 4B), the support rib 25 of the leg portion 22 contacts the upper side of the upper substantially V-shaped edge portion 16. When attached to the seat 50 backward at this position (FIG. 3B), a part of the load of the child seat 1 is transmitted to the leg portion 22 via the substantially V-shaped edge portion 16 of the arm 11 inner surface plate 11b.

FIG. 5 is an explanatory view showing the holding state of the base stand 20 shown in FIGS. 4A and 4B in an enlarged manner for explanation. As described above, in the state of being attached forward, the substantially V-shaped edge 15 of the inner surface plate 11b of the arm 11 comes into contact with the support rib 25a of the leg 22 of the base stand 20 and contacts the leg 22 of the base stand 20. Load is transmitted. On the other hand, when attaching backward, the base stand 20 is rotated upward in the figure and held at the position shown in FIG. 4B by the lock pin 24. In this state, the substantially V-shaped edge 16 of the arm 11 contacts the support rib 25 b of the leg 22 of the base stand 20. In this state, when the child seat 1 is installed with the direction along the imaginary line L in FIG. 3B or FIG. 4B as the bottom surface, the load from the arm 11 of the child seat 1 is transmitted to the leg portion 22 of the base stand 20 and the leg portion 22. The other portion of the support rib 25 abuts against the seat surface, and the load from the child seat 1 is applied to the edge portion 13a and the leg portion 22 of the intermediate portion 13 at the lower end of the arm outer surface plate 11a. Will be borne.

The arrangement shape, thickness, and the like of the support rib 25 in the leg portion 22 of the base stand 20 described above are other than the embodiment shown in FIG. 5 as long as the contact portion on the arm 11 side and the load can be transmitted smoothly. Needless to say, it can be set as appropriate in consideration of load resistance and ease of molding.

Further, the shape of the base stand 20 of the present embodiment is as shown in FIGS. 2A and 2B. For example, instead of the rotation pin 23 formed integrally with resin, it penetrates between the inner surface plates 11b of the opposing arms 11. It is also possible to use a steel rod to attach both ends of the nut at the position of the arm inner surface plate 11b. Moreover, it can replace with the lock pin mechanism fitted to a hole, and can also employ | adopt the lock mechanism etc. which locked the latching means to the notch part. Further, the shape of the leg portion 22 includes members corresponding to the support rib 25 having the above-described function, and has various shapes as long as it has a shape and size that can secure a sufficient contact area on the seat. It can be.

Thus, the present invention is not limited to the above-described embodiments, and various modifications can be made within the scope indicated in each claim. That is, an embodiment in which technical means appropriately changed within the scope of the claims is also included in the technical scope of the present invention.

This application is based on Japanese Patent Application No. 2010-166599 filed on July 24, 2010. The specification, claims, and entire drawings of Japanese Patent Application No. 2010-166599 are incorporated herein by reference.

DESCRIPTION OF SYMBOLS 1 Child seat 2 Seat cushion 3 Shell 10 Stiffening member 11 Arm 11a Arm outer surface plate 11b Arm inner surface plate 12 Base 13 Intermediate part 20 Base stand 21 Stand main body 22 Leg part 23 Rotation pin 24 Lock pin 25 Support rib

Claims

A side on which an infant is seated is covered with a seat cushion, and includes a shell for restraining the infant within the seat cushion via restraint means, and a stiffening member for holding the back and bottom of the shell, and a seat belt is provided on the passenger seat In the child seat fixed through
The stiffening member is composed of two arms that hold the shell from the back side, and a base that is continuous with the lower end of the arm through an intermediate portion, and between the two arms, on both sides of the main body. A base stand having integrally formed legs is pivotally supported so as to be rotatable,
The base stand is rotated in accordance with the mounting manner on the passenger seat to move the leg portion along the outer edge of the stiffening member, and the bottom of the child seat adapted to each mounting manner is attached to the leg portion. And a part of the edge of the stiffening member.
The mounting mode includes a mode of mounting forward on the occupant seat and a mode of mounting rearward. In the mode of mounting forward, the leg portion is positioned at the rear end of the base to form the child seat bottom, The base stand is pivoted to the lower end side of the arm, and the leg portion after movement and a part of the edge portion of the intermediate portion constitute the bottom surface of the child seat. The child seat according to claim 1.
The leg is formed with a support rib in contact with an edge of the stiffening member, and the base stand is rotated according to each mounting mode, so that the support rib of the leg is the stiffening member. The child seat according to claim 1 or 2, wherein a part of a load acting on the child seat is borne by holding an edge of the child seat.
4. The child seat according to claim 3, wherein the support rib of the leg portion holds a part of the edge portion of the arm inner surface plate of the stiffening member.
5. The base stand according to claim 1, wherein a rotation pin is formed on an outer surface of the main body, and the base stand is pivotally supported on the arm inner surface plate. 6. child seat.