JP-2026076332-A - Seat back assembly

JP2026076332AJP 2026076332 AJP2026076332 AJP 2026076332AJP-2026076332-A

Abstract

[Problem] To provide a seat back assembly. [Solution] The seat back assembly comprises a backrest, a headrest slidably attached to the upper end of the backrest, side wings positioned on the sides of the backrest and foldable and unfoldable relative to the backrest, and a drive member positioned on the backrest or headrest and moving relative to the backrest together with the headrest. Between the side wings and the backrest is a limiting device that limits the width of folding and unfolding of the side wings relative to the backrest, and the limiting device includes a slot structure and a projection structure positioned within the slot structure and slidable within the slot structure. The slot structure is positioned on one of the backrest and the side wing, and the projection structure is attached to the other of the backrest and the side wing, and the drive member drives the side wings to unfold relative to the backrest when the headrest slides away from the backrest. [Selection Diagram] Figure 1

Inventors

チェン、ホンボ

Assignees

バンビーノプレツィオーソスウィツァーランドアーゲー

Dates

Publication Date: 20260511
Application Date: 20260217
Priority Date: 20200930

Claims (10)

The backrest and, A headrest is slidably attached to the upper end of the aforementioned backrest, Side wings are positioned on the sides of the backrest and are foldable and unfoldable relative to the backrest, The device comprises a drive member positioned on the backrest or the headrest and moving together with the headrest relative to the backrest, A limiting device is provided between the side wing and the backrest to limit the width of the folding and unfolding of the side wing relative to the backrest. The limiting device includes a slot structure and a projection structure disposed within the slot structure and slidable within the slot structure. The slot structure is located on one of the backrest and the side wing, and the projection structure is attached to the other of the backrest and the side wing. The drive member drives the side wings to extend relative to the backrest when the headrest slides away from the backrest. A seat back assembly characterized by the following features.
The seatback assembly according to claim 1, characterized in that the side wings are rotatably attached to the backrest, and the lower ends of the side wings are pivotally connected to the backrest.
The seat back assembly according to claim 1, characterized in that the drive member is slidably attached to the backrest.
The seat back assembly according to claim 1, further comprising a guide post positioned at the rear of the backrest, wherein the drive member is slidably fitted onto the guide post, and the guide post extends in the height direction of the backrest.
The seatback assembly according to claim 1, characterized in that the side wing includes a press-on structure that protrudes toward the drive member, and the headrest drives the side wing to extend toward the backrest via the press of the press-on structure by the drive member.
The seat back assembly according to claim 5, characterized in that one of the drive member and the pressed structure is provided with an inclined surface structure, and the other of the drive member and the pressed structure faces the inclined surface structure.
The seat back assembly according to claim 1, characterized in that the extending direction of the slot structure and the direction of motion of the drive member are arranged to intersect.
The system further comprises an elastic member positioned between the side wing and the backrest, The seat back assembly according to claim 1, characterized in that the elastic member is positioned at the rear of the side wing, one end of the elastic member is connected to the projection structure, and the other end of the elastic member is connected to the side wing.
The elastic member has a tendency to drive the side wings to always fold in relation to the backrest. The folded side wings are pushed by the drive member and unfold relative to the backrest when the headrest slides upward, and at this time the elastic member is compressed. The seatback assembly according to claim 8, characterized in that when the headrest slides downward, the compressed elastic member returns to its original state, and the unfolded side wings are driven by the elastic member to fold against the backrest.
A child seat comprising a seat body and a seat back assembly according to any one of claims 1 to 9, A child car seat characterized in that the lower end of the backrest is attached to the seat body.

Description

This invention relates to the field of child car seats, and more particularly to seat back assemblies and child car seats. A child safety seat is a device installed in a vehicle that secures a child in the seat using restraint devices to ensure the child's safety. Child safety seats can minimize injuries to children in the event of emergency braking or collisions, and are therefore widely accepted by consumers and used worldwide. Current child car seats typically include a seat, a backrest connected to the seat, and a headrest and side wings connected to the backrest. The headrest and side wings are generally adjustable relative to the backrest to accommodate children of different body sizes. In some currently available child car seats, the side wings can be pivoted by adjusting the height of the headrest relative to the backrest, thereby achieving the goal of simultaneously adjusting the headrest height and the width of the side wings. However, such child car seats have complex structures that are not easily operated. Therefore, to solve the above problems, a seat back assembly and child seat with a simple structure are needed. Figure 1 is a schematic three-dimensional view of the two side wings of the child seat of this disclosure when folded relative to the backrest.Figure 2 is a schematic three-dimensional diagram of the child seat of this disclosure, in which the upper partial structures of the headrest and backrest are hidden.Figure 3 is a schematic plan view of the child seat of this disclosure, as seen from the rear, with the protruding structure hidden and the headrest in its initial position.Figure 4 is a schematic plan view of the child seat of this disclosure, as seen from the rear, with the protruding structure hidden and the headrest in the operating position.Figure 5 is a schematic diagram of the three-dimensional structure of the child seat of this disclosure, viewed from a different angle.Figure 6 is a schematic three-dimensional diagram of the child seat of this disclosure when the protruding structure is hidden, the headrest slides away from the backrest and beyond the operating position. To better illustrate the technical content and structural features of this disclosure, embodiments are described in detail with the following accompanying drawings. As shown in Figures 1 to 6, the child seat 100 of the present disclosure includes a seat back assembly 10 and a seat body 20. The seat back assembly 10 is positioned at the upper end of the seat body 20 and is supported and fixed by the seat body 20. Specifically, the seat back assembly 10 includes a backrest 11, a headrest 12, and side wings 13. The headrest 12 is slidably attached to the upper end of the backrest 11, thereby allowing the height of the headrest 12 to be adjusted relative to the backrest 11. The side wings 13 are positioned on the sides of the backrest 11 and are foldable and unfoldable relative to the backrest 11, thereby allowing the side wings 13 to be foldable and unfoldable relative to the backrest 11. Preferably, the side wings 13 are positioned on both the left and right sides of the backrest 11, and the included angle between the plane on which the side wings 13 are located and the plane on which the backrest 11 is located is constant, and the two side wings 13, the backrest 11 and the seat body 20 together enclose an open cavity for seating a child. The user can adjust the headrest 12 on the backrest 11, and the headrest 12 can be raised and lowered on the backrest 11, thereby accommodating the headrest 12 to the child's head and providing ease of use for children of different body sizes. Furthermore, the user can adjust the side wings 13 via the backrest 11, and the side wings 13 are extendable or foldable relative to the backrest 11 and adjustable according to the size of the open cavity, thereby providing ease of use for children of different body sizes and providing better protection for the child seated in the child seat 100. For example, the position of the headrest 12 on the backrest 11 can be adjusted to easily adjust the height of the headrest 12, but is not limited to this. The backrest 11, headrest 12, and side wings 13 of this disclosure are implemented using known structures, and their relevant details are omitted here. The seatback assembly 10 is described in further detail below in conjunction with Figures 1 to 6. As shown in Figures 2 to 6, the seatback assembly 10 further includes a drive member 14 positioned on the headrest 12 and moving together with the headrest 12 relative to the backrest 11. The headrest 12 has at least an initial position close to the backrest 11 (see Figure 3) and an operating position (see Figures 4 and 5) that drives the side wings 13 to unfold relative to the backrest 11. The side wings 13 are folded onto the backrest 11 when the headrest 12 slides to a position between the initial position and the operating position, and the drive member 14 drives the side wings 13 to unfo