JPH0939730A - Child seat device for vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a child seat device for vehicle in which a child seat can be light-weighted, and an occupant can be more surely protected. SOLUTION: Since an extension part 31 of a child seat frame 28 is rotated to the rear side in the forward turning of a child seat 25 to situate its part 31b on the rear side of the seat back frame 2'2, the extension part 31 is engaged with the rear surface of the seat back frame 22. Thus, the forward movement of the child seat 25 is prevented, and an occupant can be more surely protected.

Description

Detailed Description of the Invention

[0001]

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

[0002]

2. Description of the Related Art As a conventional vehicle child seat device, for example, those shown in FIGS. 4 to 6 are known (for a similar technique, see Japanese Patent Laid-Open No. 56-28023). In the figure, A indicates the right side and B indicates the left side.

A vehicle rear seat 1 is composed of a seat cushion 1 and a pair of left and right seat backs 3, 4. The left seat back 4 is a fixed type, and the right seat back 3 has a structure in which the entire seat back 3 is tilted forward. By tilting the right seat back 3 forward,
An opening 6 for a trunk through formed in the seat back panel 5 can be used. A lock mechanism R for the seat back panel 5 is provided at the upper right corner of the right seat back 3.

Further, a recess 7 is formed at a position to the left of the seat back 3 (a position corresponding to the center of the seat cushion 2), and a child seat 8 is provided in the recess 7 so that the upper end of the seat is tilted forward and rotatable. . That is, the seat back frame 9 is provided in the seat back 3, and the end portion of the child seat frame 11 in the child seat 8 is pivotally supported with respect to the bracket 10 fixed near the lower end portion of the seat back frame 9. Has been done.

Further, a retractor 12 is provided on the rear surface of the seat back frame 9, and the seat belt 13 pulled out from the retractor 12 extends from the take-out port 14 located at the upper left corner of the seat back frame 9 to the recess 7 side. And a tongue 15 is provided at its tip. The child seat 8 is provided with a buckle 16 that engages with the tongue 15.

Then, the child seat 8 is pulled out from the recess 7 and tilted forward to rotate, so that an occupant (child) M is placed on the upper surface of the child seat 8 which is substantially horizontal above the seat cushion 2. By engaging the tongue 15 of the seat belt 13 with the buckle 16, the occupant M can be restrained and protected by the seat belt 13. Therefore,
For example, when a forward inertial force F is generated on the occupant M due to a vehicle collision or the like, the retractor 12 causes the seat belt 1 to move.
The occupant M is locked by the seat belt 13 in order to lock
Can be prevented from moving forward.

In this case, since the inertial force F is applied from the seat belt 13 to the child seat 8 via the buckle 16, the bracket 10 for attaching the child seat 8 is large in size in order to maintain the attachment state of the child seat 8 to the seat back 3. Moreover, high strength ones are used. The child seat 8 is used as an armrest when the occupant M cannot be placed on it.

[0008]

As described above, in the conventional technique, the bracket 10 needs to be large and have high strength, which causes the weight of the vehicle to be increased. Further, in the case of a collision on the front surface of the vehicle, the child seat frame 11 may be bent due to the inertial force, and the passenger (child) may slip forward.

The present invention has been made by paying attention to such a conventional technique, and provides a vehicle child seat device in which the vehicle seat is lightened and the bending of the child seat frame is reduced as much as possible.

[0010]

According to the first aspect of the present invention,
An extension portion protruding outward from the lower end portion of the child seat is formed at the lower end portion of the child seat frame, and the extension portion is rotated rearward when the child seat is tilted forward and rotated,
A part of the extension is located on the rear side of the seat back frame.

According to the first aspect of the present invention, the extension portion of the child seat frame rotates rearward when the child seat is tilted forward, and a part thereof is located on the rear side of the seat back frame. Even if a load is applied, the extension portion engages with the rear surface of the seatback frame, so that the bracket can be downsized and the occupant can be more reliably protected.

According to a second aspect of the present invention, the seat back frame is a panel type frame, the child seat frame is a pipe type frame, and the extension portion is formed continuously from the lower end portion of the child seat frame. The lower end of the extension has a notch for receiving the side of the extension, and when the child seat is tilted forward, the lower side of the extension is rotated rearward and positioned on the rear side of the seat back frame. It becomes a state.

According to the second aspect of the present invention, since the child seat frame is a pipe type frame and the extension portion is formed continuously from the lower end portion of the child seat frame, the extension portion can be easily formed and the child seat itself. Has good manufacturability. Further, since the cutout portion for receiving the side portion of the extension portion is formed at the lower end portion of the seat back, the lower side portion of the extension portion can be engaged with the seat back more reliably.

According to the third aspect of the present invention, the extension portion is formed at the center position in the width direction of the child seat frame and has a width narrower than the child seat frame.

According to the third aspect of the invention, since the width of the extension portion is set narrower than that of the lower end portion of the child seat frame, the position of the cutout portion is different from that of the bracket, and the cutout portion can be easily formed. Become.

According to a fourth aspect of the present invention, the side portion of the extension portion comes into contact with the upper end of the cutout portion when the child seat is tilted forward.

According to the invention as set forth in claim 4, since the side portion of the extension portion comes into contact with the upper end of the notch when the child seat is tilted forward, the child seat in the tilted forward position is stabilized and the child seat is restrained. The feeling of sitting is improved.

[0018]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT A preferred embodiment of the present invention will be described below with reference to FIGS. The same parts as those in the prior art are designated by the same reference numerals, and a duplicate description will be omitted.

Rear seat 1 as an embodiment of the present invention
The seat back 18 on the right side in FIG. 7 is rotatable forward and rotatable, and the seat back 19 on the left side is fixed. And
Inside each of these, seat back frames 22 and 23 of panel type frames having flanges 20 and 21 on the periphery are provided. Hereinafter, only the right seat back 18 will be described.

A recess 24 is formed at a leftward position of the seat back 18 (a position corresponding to the center of the seat cushion 2), and a child seat 25 which can be tilted forward and rotated is provided in the recess 24. The "lower end" of the seat back frame 22 in the seat back 18 is formed by the lower flange 20a, and a pair of left and right brackets 26 are fixed to the upper side of the flange 20a corresponding to the recess 24. . Further, a pair of left and right cutouts 27 formed upward from the flange 20a are formed inside the brackets 26, respectively. Further, the seat back frame 2 corresponding to the recess 24
A pair of left and right outlets 14 is formed at the upper position of 2, and a tongue 15 is provided at the tip of the seat belt 13 pulled out from the outlet 14 into the recess 24.

On the other hand, a child seat frame 28 provided in the child seat 25 is a pipe-shaped frame having a shape substantially conforming to the outline of the child seat 25, and a bearing body 30 is attached to a lower end 29 thereof.
The bearing body 30 is pivotally supported on the bracket 26.

The child seat frame 2
An extension 31 having a width d narrower than the width D of the lower end 29 and located at the center of the lower end 29 in the width direction is integrally and continuously formed from the lower end 29 of 8 (see FIG. 1). ). The extension portion 31 projects outward from the lower end portion of the child seat 25, and the lower side portion 31b of the extension portion 31 is lower than the flange 20a of the seat back frame 22 in a state where the child seat 25 is housed in the recess 24. Located on the side. The side portion 31a of the extension portion 31 has a positional relationship corresponding to the cutout portion 27 of the seat back frame 22. Since the width d of the extension portion 31 is narrowed, the position of the cutout portion 27 is different from the position of the bracket 26. Therefore, when the cutout portion 27 is formed, the bracket 2
Since it is not necessary to worry about interference with 6, the notch 27 can be easily formed. Further, since the extension portion 31 is formed continuously from the lower end portion 29 of the child seat frame 28, the extension portion 31 can be easily formed and the child seat 25 itself can be manufactured easily.

A buckle 16 is rotatably attached to the center of the upper end of the child seat frame 28. The buckle 16 is located in a recess 32 (see FIG. 2) formed on the surface of the child seat 25, and is raised only when it is used to engage the tongue 15 of the seat belt 13, and is stored in the recess 32 when not used. Then, the child seat 25 is easily used as an armrest.

Next, a method of using the child seat 25 will be described. First, the child seat 25 is pulled out from the recess 24 and tilted forward to rotate. When the child seat 25 is turned forward and turned, the extension portion 31 turns backward, and the side portion 31a of the extension portion 31 enters into the cutout portion 27 of the seat back frame 22. The lower side portion 31b is reliably positioned on the rear side of the seat back frame 22. Further, by tilting the child seat 25 forward and rotating the child seat 25, the child seat 25 is placed on the upper portion of the seat cushion 2 in a horizontal state, and the side portion 31 a of the extension portion 31 is in contact with the upper end of the cutout portion 27. (See FIG. 3). Then, an occupant (child) is placed on the child seat 25 that is turned forward and rotated, the seat belt 13 is pulled out, and the tongue 15 at the tip thereof is engaged with the buckle 16 to restrain the occupant (child). As described above, since the side portion 31a of the extension portion 31 abuts on the upper end of the cutout portion 27 and the state in which the child seat 25 is tilted forward and rotated is stable, the child seat 25 is stable.
Improves the sitting feeling.

If an excessive inertial force F (see FIG. 3) acts due to a vehicle collision or the like and the child seat 25 is disengaged from the bracket 26 of the seat back frame 22, the extension portion may be removed. Since the lower side portion 31 b of the seat 31 is located on the rear side of the seat back frame 22, the lower side portion 31 b of the seat back frame 22 is
The rear seat is engaged, and the forward movement of the child seat 25 is reliably prevented. Therefore, the occupant (child) on the child seat 25 can be surely protected, and more thorough safety measures can be realized.

In the above description, the seat back frame 22 is a panel type frame and the child seat frame 28 is a pipe type frame, but the present invention is not limited to this and other types of frames may be used. Further, at least a part of the “extension part” may be located on the rear side of the “seatback frame”, and the notch 27 need not necessarily be formed in the “seatback frame”. Further, in the above embodiments, the rear seat 17 of the automobile has been described as an example, but the present invention is not limited to the seat of the automobile, and can be applied to all seats of vehicles such as ships, airplanes and trains.

[0027]

According to the first aspect of the present invention, the extension portion of the child seat frame rotates rearward when the child seat is tilted forward, and a part thereof is located on the rear side of the seat back frame. Even if a large load is applied to the seat, the extension portion engages with the rear surface of the seatback frame, so that the bracket can be downsized and the occupant can be more reliably protected.

According to the second aspect of the present invention, since the child seat frame is a pipe type frame and the extension portion is formed continuously from the lower end portion of the child seat frame, the extension portion can be easily formed and the child seat itself. Has good manufacturability. Further, since the cutout portion for receiving the side portion of the extension portion is formed at the lower end portion of the seat back, the lower side portion of the extension portion can be engaged with the seat back more reliably.

According to the third aspect of the invention, since the width of the extension portion is set narrower than the lower end portion of the child seat frame, the position of the cutout portion is different from that of the bracket, and the formation of the cutout portion is facilitated. Become.

According to the fourth aspect of the present invention, since the side portion of the extension portion comes into contact with the upper end of the notch when the child seat is tilted forward, the child seat in the tilted and tilted state is stable, and the child seat The feeling of sitting is improved.

[Brief description of drawings]

FIG. 1 is a perspective view showing an internal structure of a child seat device according to an embodiment of the present invention.

FIG. 2 is a perspective view corresponding to FIG. 1, showing a state in which a child seat is tilted forward and rotated.

FIG. 3 is a sectional view taken along the line SA-SA shown in FIG.

FIG. 4 is a perspective view showing a conventional child seat device.

FIG. 5 is a side view of a partial cross section showing a state in which an occupant is placed on the child seat.

[Explanation of symbols]

 18, 19 seat back 20a flange (lower end) 22, 23 seat back frame 24 recess 25 child seat 26 bracket 27 notch 28 child seat frame 31 extension 31a side 31b lower side

Claims (4)

[Claims] 1. A child seat having a freely rotatable upper end portion is provided in a recess of a seat back, and a lower end portion of a child seat frame inside the child seat is attached to a bracket fixed to a seat back frame inside the seat back. In the supported child seat device for a vehicle, an extension portion protruding outward from the lower end portion of the child seat is formed at the lower end portion of the child seat frame, and the extension portion is rotated rearward when the child seat is tilted forward and rotated, A child seat device for a vehicle, wherein a part of the extension is located on the rear side of the seat back frame. 2. The seat back frame is a panel type frame, the child seat frame is a pipe type frame, the extension is formed continuously from the lower end of the child seat frame, and the extension is provided at the lower end of the seat back frame. 2. A cutout portion is formed to receive a side edge portion of the seat portion, and when the child seat is tilted forward, the lower edge portion of the extension portion is pivoted rearward to be positioned behind the seat back frame. The vehicle child seat device described. 3. The vehicle child seat device according to claim 2, wherein the extension portion is formed at a widthwise central position of the child seat frame and has a width narrower than the child seat frame. 4. The vehicle child seat device for a vehicle according to claim 2, wherein a side portion of the extension portion abuts on an upper end of the cutout portion when the child seat is tilted forward.