WO2024014085A1

WO2024014085A1 - Child car seat

Info

Publication number: WO2024014085A1
Application number: PCT/JP2023/015827
Authority: WO
Inventors: 尚之田村; 孔明吉田; 拓孝岡
Original assignee: 株式会社カーメイト
Priority date: 2022-07-15
Filing date: 2023-04-20
Publication date: 2024-01-18
Also published as: JP2024011910A

Abstract

[Problem] To provide a child car seat with which a vehicle seat fixing strength and a seat strength are maintained, and which is reduced in size. [Solution] A child car seat (10) of the present invention comprises a seat (20) on which an infant sits, and a base (30) which is attached to the vehicle seat, and which supports the seat in such a way as to enable at least one operation from among rotation of the seat about an axis, and sliding in which the seat moves in a straight line. The child car seat is characterized in that a connector reinforcing portion (50) for reinforcing the strength of a pair of connectors (40) for fixing the base (30) to the vehicle seat, and a hook portion (70) for gripping the seat are disposed between the pair of connectors (40).

Description

child seat

The present invention relates to a child seat in which a seat on which an infant is seated slides from a fixed position (for example, in the left-right direction toward the door of the vehicle) with respect to a base attached to a vehicle seat.

It is mandatory by law to always use a child seat when driving with an infant in a vehicle.
Conventionally, various child seats have been proposed. The child seat disclosed in Patent Document 1 includes a fixing unit that fixes a base to a vehicle seat, and the fixing unit includes a resin frame on the top surface and a bent part that is bent along both sides and the bottom and fixed to the resin frame. It has processed sheet metal. This effectively prevents vertical and widthwise movement relative to the fixed unit due to forward inertia force.

In the child seat disclosed in Patent Document 2, the seat can be reclined and rotated with respect to the base, and furthermore, the seat can be attached to and detached from the base. If the seat has a rotating function, the claws that hold the seat need to be located close to the connector and the base frame in order to ensure the strength of the connection with the seat. For this reason, the position of the claw becomes wider at a position outwardly away from the center of rotation of the seat (extending portion 67f in paragraph number 0051, see FIGS. 13 and 14), and the rotating cylindrical portion on the seat side also becomes larger.

According to the technology disclosed in Patent Document 1, it is certainly possible to provide strength by arranging a resin frame and bent sheet metal on the top of the fixed unit, but if you try to secure strength by stacking them in the height direction, the position of the sheets will change. In other words, the seating position becomes higher and safety decreases. Moreover, the height of the child seat as a whole becomes high, and the restriction on use by infants and young children is shortened.
Furthermore, according to the technique disclosed in Patent Document 2, the positions of the claws are arranged as widely as possible in order to prevent the sheet from coming off. FIG. 12 is a diagram showing the relationship between the conventional base-side pawl and the rotation axis of the seat. As shown in the figure, if the claws 2 into which the seat flange 1 fits are arranged widely, strength can be ensured, but the diameter of the rotating shaft 3 becomes thinner to avoid contact with the rotating shaft 3 of the seat, so sufficient strength cannot be achieved. It becomes difficult to obtain.

JP2020-199865A JP2020-199861A

The problem to be solved by the present invention is to provide a child seat that maintains the fixing strength of a vehicle seat and the strength of the seat, and that is downsized, in view of the problems of the prior art described above.

As a first means for solving the above problems, the present invention provides a seat on which an infant is seated, and a slide that is attached to a vehicle seat and that rotates the seat around an axis or moves the seat linearly. A child seat equipped with a base that supports the above operations,
To provide a child seat characterized in that a connector reinforcing part for reinforcing the strength of the connector and a claw part for gripping the seat are arranged between a pair of connectors fixing the base to the vehicle seat.
According to the first means, the fixing strength of the vehicle seat by the connector can be ensured, and the strength of the connecting portion of the seat can also be ensured by the claw portion. Furthermore, the entire seat can be made smaller, and the seat position, in other words, the seating position, can be lowered to ensure safety. Additionally, the overall height of the child seat is lowered, making it possible to set long-term restrictions on the use of the child seat.

As a second means for solving the above problems, the present invention provides a seat on which an infant is seated, a reclining device that is attached to a vehicle seat so that the seat rotates around an axis, and the seat reclines at different angles of inclination; A child seat comprising a base that supports the movement of a slide that moves in a straight line,
A pair of connector reinforcing parts for reinforcing the strength of the connector between a pair of connectors for fixing the base to the vehicle seat, a reclining frame between the pair of connector reinforcing parts, and a claw part for gripping the seat. An object of the present invention is to provide a child seat characterized by the following features:
According to the second means, the fixing strength of the vehicle seat by the connector can be ensured, and the strength of the connecting portion of the seat can also be ensured by the claw portion. Furthermore, the entire seat can be made smaller, and the seat position, in other words, the seating position, can be lowered to ensure safety. Additionally, the overall height of the child seat is lowered, making it possible to set longer restrictions on the use of the child seat.

As a third means for solving the above problem, the present invention provides that, in the first or second means, the claw portions are arranged in pairs so as to face each other about the rotation axis of the sheet. Our goal is to provide child seats with special features.
According to the third means, the area where the claw portion and the flange overlap in plan view can be increased, and sufficient strength can be ensured at the connection portion between the base and the seat.

As a fourth means for solving the above problem, the present invention provides a third means in which the diameter of the rotating shaft of the seat is set to be approximately the same length as the length between the pair of claw portions. The purpose of the present invention is to provide a child seat characterized by the following features:
According to the fourth means, the rotation axis of the seat can be made thicker, and the strength when rotating the seat can be ensured.

According to the present invention, the fixing strength of the vehicle seat by the connector can be ensured, and the strength of the connecting portion of the seat can also be ensured by the claw portion. Furthermore, the entire seat can be made smaller, and the seat position, in other words, the seating position, can be lowered to ensure safety. You can also set usage limits for longer periods of time.

1 is a perspective view of the child seat of Example 1. FIG. 1 is an exploded perspective view of the child seat of Example 1. FIG. FIG. 3 is a perspective view of the base with the top cover removed. 4 is a sectional view taken along line AA in FIG. 3. FIG. FIG. 3 is an explanatory diagram showing the relationship between the claw portion on the base side and the rotation axis of the seat. FIG. 3 is an exploded perspective view of a child seat according to a second embodiment. FIG. 3 is a perspective view of the base with the top cover removed. FIG. 7 is a perspective view of a child seat according to a third embodiment. FIG. 3 is an exploded perspective view of a child seat according to a third embodiment. FIG. 3 is a perspective view of the base with the top cover removed. FIG. 3 is a cross-sectional view in the front-rear direction passing through the center of the concave portion of the base. FIG. 3 is an explanatory diagram showing the relationship between a conventional base-side pawl and a rotation axis of a seat.

Embodiments of the child seat of the present invention will be described in detail below with reference to the drawings. In this embodiment, the longitudinal direction (front/rear) indicates the front/rear direction of the vehicle, and the left/right direction indicates the space between the doors of the vehicle, in other words, the direction orthogonal to the longitudinal direction of the vehicle.

[Example 1: Rotation and sliding]
FIG. 1 is a perspective view of a child seat according to a first embodiment. FIG. 2 is an exploded perspective view of the child seat according to the first embodiment.
The child seat 10 of Embodiment 1 supports a seat 20 on which an infant is seated, and a seat 20 attached to a vehicle seat so that the seat can rotate around an axis or slide in a linear manner. A child seat including a base 30, in which a connector reinforcing section 50 for reinforcing the strength of the connector 40 is arranged side by side between a pair of connectors 40 for fixing the base 30 to the vehicle seat, and the connector reinforcing section 50 is provided with a claw portion 70 for gripping the sheet 20 at the center.
The connectors 40 adopt ISOFIX, which is an international standard for removably connecting to a connecting fitting of a vehicle seat, and are provided in pairs at a predetermined interval in the left and right direction of the base 30.

In the child seat shown in Example 1, the flanged member 21 has a circular shape with a flange. A convex portion 22 is provided at the center of the flanged member 21. The convex portion 22 is urged to protrude from the lower surface of the seat 20 toward the concave portion 54 of the base 30 and engages with it, thereby fixing the seat 20 to the base 30.
The flanged member 21 also includes a lock pin 24 that moves forward and backward from the lower surface toward the upper surface of the T-groove 32 of the upper cover 34 of the base 30, and the T-groove 32 has a pin hole 56 on the upper surface into which the lock pin 24 fits. ing. The flanged member 21 of Example 1 has a circular shape with a flange, and the flange part fits into the flange of the T-groove 32. Therefore, the sheet 20 can be freely rotated around the axis of the convex portion 22. Further, the lock pin 24 protruding from the lower surface of the flanged member 21 and provided on the front side of the seat 20 can be moved to the flanged member 21 by lever operation of any one of the two operating members 28 provided on both sides of the seat 20. It can be changed into a state in which it protrudes from the lower surface of the flanged member 21 and a retracted state in which the tip coincides with the lower surface of the flanged member 21. Two pin holes 56 on the upper surface of the T-slot 32 into which the lock pins 24 fit are provided in the front-rear direction with the recess 54 as the center. The position where the lock pin 24 of the seat 20 fits into the pin hole 56 provided in the base 30 is the position where the seat 20 faces the front or the back.
Such a child seat can be installed and removed by sliding the seat 20 by operating the two operating members 28 (see Example 2). Further, the seat 20 can be fixed in any direction (front, back) by protruding the lock pin 24.

FIG. 3 is a perspective view of the base with the top cover removed. FIG. 4 is a sectional view taken along line AA in FIG. 3 (including the upper cover). A connector 40 and a connector reinforcement part 50 are arranged inside the base 30 from which the upper cover 34 is removed. The connector reinforcing portion 50 is a member that is arranged side by side between the pair of connectors 40 to reinforce the attachment strength of the connector 40 to the base 30. The connector 40 and the connector reinforcing portion 50 are connected to each other at four locations along the left and right direction of the base 30 by anchor pins 52 (see chain lines in FIG. 3). The connector reinforcement part 50 extends from the center toward the front of the base 30, and has two recesses 54 into which the convex part 22 of the seat 20 fits, and two pin holes 56 into which the lock pins 24 of the seat 20 fit. It is set up. The recess 54 and pin hole 56 of the connector reinforcing portion 50 are arranged concentrically so as to overlap the recess 54 and pin hole 56 of the T-slot 32 in plan view. The connector reinforcing portion 50 is made of plastic resin, for example.

FIG. 5 is an explanatory diagram showing the relationship between the claw portion on the base side and the rotation axis of the seat. As shown in the figure, the connector reinforcing portion 50 is provided with a claw portion 70 into which the flange 26 of the seat 20 fits along the front-rear direction of the base 30 passing through the recess 54. The claw portion 70 of the connector reinforcing portion 50 is covered by the flange of the T-slot 32, and the collar portion of the flanged member 21 is fitted into the claw portion 70.
A pair of claw portions 70 are arranged to face each other with the convex portion 22 of the sheet 20, in other words, the concave portion 54 on the base 30 side as the center. With this arrangement, the projected area of the claw portion 70 and the flange 26 of the sheet 20 can be made larger than in the conventional configuration in which the claws are arranged as widely as possible to prevent the sheet 20 from coming off, and sufficient strength can be achieved. Can be secured.

Further, the diameter of the rotating shaft 23 of the seat 20 is set to be approximately the same length as the length between the pair of claws 70. Thereby, the connection strength of the sheet 20 can be ensured.
Such connector reinforcing portions 50 are arranged side by side between the pair of connectors 40 and do not overlap with the upper portions of the connectors 40 in plan view. Therefore, compared to the conventional structure in which the connector is provided above and reinforced, the position of the seat 20, in other words, the seating position is lowered and safety can be ensured. You can also set usage limits for longer periods of time.

[Example 2: Slide only]
FIG. 6 is an exploded perspective view of the child seat according to the second embodiment. FIG. 7 is a perspective view of the base with the top cover removed.
The child seat 10A of the second embodiment supports a seat 20A on which an infant is seated, and a seat that is attached to a vehicle seat so that the seat can rotate around an axis or slide in a straight line. A child seat including a base 30A, in which connector reinforcing parts 50A for reinforcing the strength of the connectors 40 are arranged side by side between a pair of connectors 40 that fix the base 30A to the seat 20A, and the connector reinforcing parts 50A is provided with a claw portion 70 at the center that grips the sheet 20A.
A child seat 10A shown in Example 2 includes a flanged member 21A and a convex portion 22 on a seat 20A, and a T-slot 32 and a recess 54 on an upper cover 34A of a base 30A.

The T-groove 32 is a groove having a T-shaped cross section, and is formed so as to span both side surfaces of the base 30A along the horizontal direction of the upper cover 34A of the base A30. A recess 54 is provided at the fixed position of the sheet 20A, which is the center of the T-slot 32.
The flanged member 21A is a rectangular member with a T-shaped cross section, and includes a flange 26 that fits into the T groove 32. A convex portion 22 is provided at the center of the flanged member 21A. The convex portion 22 is urged to protrude from the lower surface of the sheet 20A toward the concave portion 54 of the base 30 and engages with the concave portion 54, thereby fixing the sheet 20A to the base 30A.
Operating members 28 are provided on both sides of the seat 20A. The operating member 28 is an operating lever that is connected to the protrusion 22 and can reduce the amount of protrusion of the protrusion 22 from the lower surface of the seat 20A to zero by operating it in the opposite direction. In the operating member 28 of this embodiment, the amount of protrusion of the convex portion 22 can be reduced to 0 by operating either one.

In such a child seat 10A, the amount of protrusion of the convex portion 22 is set to zero by operating one of the operating members 28 provided on the side surface of the seat 20A. While operating the operating member 28, the seat 20A is lifted and moved to the side of the base 30A fixed to the vehicle seat. Then, the flanged member 21A is fitted into the T-groove 32 from one side of the T-groove 32 of the base 20A, and then moved horizontally. After the lower surface of the flanged member 21A contacts the upper surface of the T-groove 32, the convex portion 22 remains held against the upper surface of the T-groove 32 even if the operating member 28 is released. When the base 30A is slid in the horizontal direction to the fixed position at the center of the base 30A, the biased convex part 22 projects and fits into the recessed part 54 at the fixed position, and the sheet 20A can be fixed to the base 30A.

In the removal operation of the sheet 20A, the amount of protrusion of the convex part 22 becomes 0 even if either of the operating members 28 is operated, and the convex part 22 is slid in the horizontal direction with the convex part 22 removed from the concave part 54. During sliding movement, the convex portion 22 remains pressed against the upper surface of the T-slot 32 even if the user releases the operating member 28 . If the T-groove 32 is slid horizontally to the attachment or removal position on the side surface of the T-groove 32, the T-groove 32 and the flanged member 21A are disengaged, and the seat 20A can be removed.
The connector reinforcing section 50A has the same configuration as the connector reinforcing section 50 of Example 1, except that no pin holes are provided.
The child seat of the second embodiment is arranged side by side between the pair of connectors 40 as in the first embodiment, and does not overlap the top of the connectors 40 in plan view. Therefore, compared to the conventional structure in which the connector is provided above and reinforced, the position of the seat 20, in other words, the seating position is lowered and safety can be ensured. Additionally, the overall height of the child seat is lowered, making it possible to set longer restrictions on the use of the child seat.

[Example 3: Rotation, sliding and reclining]
FIG. 8 is a perspective view of the child seat according to the third embodiment. FIG. 9 is an exploded perspective view of the child seat according to the third embodiment. FIG. 10 is a perspective view of the base with the cover removed. FIG. 11 is a cross-sectional view in the front-rear direction passing through the center of the concave portion of the base.
The child seat 10B of Embodiment 3 includes a seat 20 on which an infant is seated, a seat 20 that is attached to a vehicle seat and rotates around an axis, a reclining mode in which the seat 20 reclines at different inclination angles, and a reclining mode in which the seat 20 moves linearly. The child seat is equipped with a base 30B that supports sliding movement, and includes a pair of connector reinforcing parts 50B that reinforce the strength of the connectors 40 between the pair of connectors 40 that fix the base 30B to the seat 20. A reclining frame 60 is arranged side by side between the pair of connector reinforcement parts 50B, and the reclining frame 60 is provided with a claw part 70 for gripping the seat 20.

The child seat 10B shown in the third embodiment includes a flanged member 21 and a convex portion 22 on the seat 20, and a T-slot 32 and a recess 54 on the reclining cover 64 on the base 30B side. The sheet 20 has the same structure as the sheet of Example 1.
The T groove 32 is a groove having a T-shaped cross section, and is formed so as to span both side surfaces of the reclining cover 64 on the base 30B side along the horizontal direction. A recess 54 is provided at the fixed position of the sheet 20 which is the center of the T-slot 32.
The connector reinforcement part 50B is a member attached to the inside of the base 30B with the top cover 34B removed, and is a member that is arranged side by side between a pair of connectors 40 to reinforce the attachment strength of the connector 40 to the base 30B. . The connector 40 and the connector reinforcing portion 50B are connected at four locations along the width direction of the base 30B, front, rear, left and right, by anchor pins 52 (see chain lines in FIG. 10). The connector reinforcing portion 50B is made of plastic resin, for example.

The reclining frame 60 is a member attached to the reclining cover 64, and is arranged side by side between the pair of connectors 40 and the connector reinforcement portion 50B. The reclining frame 60 extends toward the front of the base 30B, and has a center hole 54 into which the convex portion 22 serving as the center of rotation of the seat 20 fits, and a pin hole 56 into which the lock pin 24 of the seat 20 fits. There is one. Further, the reclining frame 60 is provided with a claw portion 70 in which the flange 26 of the seat 20 fits along the front-rear direction of the base 30B passing through the center hole 54. The structure of the claw portion 70 is the same as that of the claw portion of Example 1, and detailed description thereof will be omitted. The recess 54 and pin hole 56 of the reclining frame 60 are arranged concentrically so as to overlap with the recess 54 and pin hole 56 of the T groove 32 of the reclining cover 64 in plan view. Further, the reclining frame 60 has reclining bars 62 projecting horizontally from both rear sides. The connector reinforcement part 50 has an arcuate groove 58 arranged on the side surface facing the reclining bar 62. The arcuate groove 58 is a groove provided along the reclining range and angle of the seat 20A. The reclining frame 60 is made of, for example, plastic resin, similarly to the connector reinforcing portion 50.

Such a child seat 10B can be installed and removed by sliding the seat 20 by operating the two operating members 28. Further, the seat 20 can be fixed in any direction (front, back) by protruding the lock pin 24 by operating any one of the operating members 28 of the seat 20.
Furthermore, by moving the reclining bar 62 within the range of the arcuate groove 58 using a reclining operation member (not shown), the seat 20A can be reclined at a predetermined angle.
Further, as in the first embodiment, they are arranged side by side between the pair of connectors 40, and do not overlap with the tops of the connectors 40 in plan view. Therefore, compared to the conventional structure in which the connector is provided above and reinforced, the position of the seat 20, in other words, the seating position is lowered and safety can be ensured. Additionally, the overall height of the child seat is lowered, making it possible to set long-term restrictions on the use of the child seat.

According to the present invention, the fixing strength of the vehicle seat by the connector can be ensured, and the strength of the connecting portion of the seat can also be ensured by the claw portion. Furthermore, the entire seat can be made smaller, and the seat position, in other words, the seating position, can be lowered to ensure safety. Additionally, the overall height of the child seat is lowered, making it possible to set long-term restrictions on the use of the child seat. Note that the present invention can be similarly applied to a child seat in which the seat only rotates (does not slide).
The preferred embodiments of the present invention have been described above. However, the present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the spirit of the present invention.
Further, the present invention is not limited to the combinations shown in the embodiments, but can be implemented by various combinations.

1 Flange 2 Claw 3

Rotating shaft

10, 10A,

10B Child seat

20,

20A Seat

21, 21A Flange member 22 Convex portion 23 Rotating shaft 24 Lock pin 26 Flange 28

Operating member

30, 30A, 30B Base 32 T-slot 34 Upper cover 40

Connectors

50, 50A, 50B Connector reinforcement part 52 Anchor pin 54 Recess 56 Pin hole 58 Arc groove 60 Reclining frame 62 Reclining bar 64 Reclining cover 70 Claw part

Claims

A child seat comprising a seat on which an infant is seated, and a base that is attached to a vehicle seat and supports the seat so that it can rotate around an axis or slide in a linear manner, the base comprising:
A child seat characterized in that a connector reinforcing part for reinforcing the strength of the connector and a claw part for gripping the seat are arranged between a pair of connectors for fixing the base to the vehicle seat.
A seat for an infant to sit on, and a base that is attached to a vehicle seat and supports the seat to rotate around an axis, recline the seat to tilt at different angles, and slide the seat to move linearly. A child seat,
A pair of connector reinforcing parts for reinforcing the strength of the connector between a pair of connectors for fixing the base to the vehicle seat, a reclining frame between the pair of connector reinforcing parts, and a claw part for gripping the seat. A child seat characterized by the following:
The child seat according to claim 1 or claim 2,
The child seat is characterized in that the claw portions are arranged as a pair so as to face each other about the rotation axis of the seat.
The child seat according to claim 3,
A child seat characterized in that the diameter of the rotating shaft of the seat is set to be approximately the same length as the length between the pair of claws.