JP3304699B2 - Vehicle child seat device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

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

[0002]

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

[0003] Reference numeral 1 denotes a rear seat of an automobile, which comprises a seat cushion 1 and a pair of left and right seat backs 3 and 4. The left seat back 4 is of a fixed type, and the right seat back 3 has a structure in which the whole is tilted forward, and 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.

A concave portion 7 is formed at a position of the seat back 3 to the left (a position corresponding to the center of the seat cushion 2), and a child seat 8 is provided in the concave portion 7 so that the upper end thereof can be turned forward and rotatable. . That is, a seat back frame 9 is provided in the seat back 3, and an end of the child seat frame 11 in the child seat 8 is pivotally supported by a bracket 10 fixed near a lower end of the seat back frame 9. Have been.

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

[0006] Then, the child seat 8 is pulled out from the concave portion 7 and turned forward, and the occupant (child) M is put on the upper surface of the child seat 8 which is substantially horizontal at the upper part of 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 applied to the occupant M due to a vehicle collision or the like, the retractor 12
3 to lock the occupant M by the seat belt 13.
Can be prevented from moving forward.

In this case, since the inertial force F is applied to the child seat 8 from the seat belt 13 via the buckle 16, the bracket 10 for mounting the child seat 8 is large in order to maintain the child seat 8 in the attached state to the seat back 3. In addition, those having high strength are used. In addition, this child seat 8 is used as an armrest when the occupant M cannot be put on the upper side.

[0008]

As described above, in the prior art, the bracket 10 needs to be large and high in strength, which causes the vehicle to be heavy. In addition, when a collision occurs in front of the vehicle, the child seat frame 11 may bend due to the inertial force, and the occupant (child) may move forward.

The present invention has been made by paying attention to such a conventional technique, and an object thereof is to provide a child seat apparatus for a vehicle in which the deflection of the child seat frame is reduced as much as possible while reducing the weight of the vehicle.

[0010]

According to the first aspect of the present invention,
An extension protruding from the lower end of the child seat to the outside is formed at the lower end of the child seat frame, and the extension rotates rearward when the child seat tilts forward,
Some of the extension portion to the position on the rear side of the seat back frame
When the load is applied, the extension is
It is configured to be able to engage with the rear surface .

According to the first aspect of the present invention, the extended portion of the child seat frame is rotated rearward when the child seat is tilted forward, and a part of the extended portion is located on the rear side of the seat back frame. Even if a load is applied, the extension portion is engaged with the rear surface of the seat back frame, so that the size of the bracket can be reduced 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 is formed continuously from the lower end of the child seat frame. A notch portion is formed at a lower end portion for receiving a side portion of the extension portion, and when the child seat is tilted forward, the lower side portion of the extension portion turns rearward and is located on the rear side of the seat back frame. State.

According to the second aspect of the present invention, since the child seat frame is a pipe type frame and the extension is formed continuously from the lower end of the child seat frame, it is easy to form the extension and the child seat itself. Has good manufacturability. In addition, since the notch for receiving the side of the extension is formed at the lower end of the seat back, the lower side of the extension can be more securely engaged with the seat back.

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

According to the third aspect of the present invention, since the width of the extension is set to be narrower than the lower end of the child seat frame, the position of the notch is different from that of the bracket, so that the formation of the notch is easy. 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 notch portion when the child seat is pivoted forward.

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

[0018]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A preferred embodiment of the present invention will be described below with reference to FIGS. In addition, the same reference numerals are given to portions common to the related art, and overlapping description will be omitted.

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

A concave portion 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 is turned forward and rotatable is provided in the concave portion 24. A “lower end” of the seat back frame 22 in the seat back 18 is formed by a lower flange 20 a, and a pair of left and right brackets 26 is fixed to a slightly upper portion of the flange 20 a corresponding to the recess 24. . Further, a pair of left and right cutouts 27 formed upward from the flange 20a are formed at the inner positions of the brackets 26, respectively. Further, the seat back frame 2 corresponding to the concave portion 24
A pair of left and right outlets 14 are formed at the upper position of the seat belt 2, and a tongue 15 is provided at the tip of the seat belt 13 drawn out of 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 type frame having a shape substantially along the outline of the child seat 25, and a bearing 30 is attached to a lower end portion 29 thereof.
The bearing body 30 is supported on the bracket 26.

The child seat frame 2
An extension 31 having a width d smaller than the width D of the lower end 29 and located at the center in the width direction of the lower end 29 is integrally formed continuously from the lower end 29 of FIG. ). The extension 31 projects outward from the lower end of the child seat 25, and the lower side 31 b of the extension 31 is lower than the flange 20 a of the seat back frame 22 in a state where the child seat 25 is stored in the recess 24. Located on the side. The side 31a of the extension 31 has a positional relationship corresponding to the notch 27 of the seat back frame 22. Since the width d of the extension 31 is reduced, the position of the notch 27 is different from the position of the bracket 26.
It is not necessary to worry about interference with the notch 6, and 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 productivity of the child seat 25 itself is good.

At the center of the upper end of the child seat frame 28, the buckle 16 is rotatably mounted. The buckle 16 is located in a depression 32 (see FIG. 2) formed on the surface of the child seat 25, and is raised only when used to engage the tongue 15 of the seat belt 13, and is stored in the depression 32 when not in use. Thus, 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 concave portion 24 and turned forward. When the child seat 25 is turned forward and turned, the extension 31 is turned backward and the side 31 a of the extension 31 enters the cutout 27 of the seat back frame 22. The lower side portion 31b is located in the rear side of the seat back frame 22 in a reliable state. In addition, by turning the child seat 25 forward and rotating, the child seat 25 is placed in a horizontal state on the upper part of the seat cushion 2, and the side part 31 a of the extension part 31 is in contact with the upper end of the notch 27. (See FIG. 3). Then, the occupant (child) is placed on the child seat 25 that has been turned forward, the seat belt 13 is pulled out, and the tongue 15 at the end thereof is engaged with the buckle 16 to restrain the occupant (child). As described above, the side 31a of the extension 31 abuts against the upper end of the notch 27, and the state in which the child seat 25 is tilted forward and rotated is stable.
Seating feeling is improved.

If the child seat 25 is disengaged from the bracket 26 of the seat back frame 22 due to an excessive inertia force F (see FIG. 3) due to, for example, a vehicle collision or the like, the extension 31 is located on the rear side of the seat back frame 22, the lower side 31b is
And the child seat 25 is reliably prevented from moving forward. Therefore, protection of the occupant (child) on the child seat 25 can be ensured, 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. However, the present invention is not limited to this, and other types of frames may be used. Further, it is sufficient that at least a part of the “extended portion” is located on the rear side of the “seat back frame”, and the notch 27 does not necessarily need to be formed in the “seat back frame”. Furthermore, in the above-described embodiment, the rear seat 17 of an automobile has been described as an example. However, the present invention is not limited to an automobile seat, and is applicable to all seats of vehicles such as ships, airplanes, and trains.

[0027]

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

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

According to the third aspect of the present invention, since the width of the extension is set to be smaller than the lower end of the child seat frame, the position of the notch is different from that of the bracket, and the formation of the notch is easy. Become.

According to the fourth aspect of the present invention, the side portion of the extension portion comes into contact with the upper end of the notch portion when the child seat is turned forward, so that the child seat in the forward-turned state is stabilized, and the child seat of the child seat is rotated. The feeling of sitting is improved.

[Brief description of the drawings]

FIG. 1 is a perspective view showing the 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 and showing a state in which the child seat is tilted forward and rotated.

FIG. 3 is a sectional view taken along the line SA-SA shown in FIG. 1;

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

FIG. 5 is a partial cross-sectional side view showing a state where an occupant is placed on a 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)

(57) [Claims] A child seat is provided in a recess of the seat back so that the upper end thereof can be turned forward and the child seat is rotatable. The lower end of the child seat frame inside the child seat is pivoted on a bracket fixed to the seat back frame inside the seat back. In the supported child seat device for a vehicle, an extension portion is formed at a lower end portion of the child seat frame so as to protrude outward from a lower end portion of the child seat, and the extension portion rotates rearward when the child seat tilts forward and turns, A part of the extension is located on the rear side of the seat back frame, and the extension is closed when a load is input.
To be able to engage with the rear surface of the back frame.
A child seat device for a vehicle. 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 extends to the lower end of the seat back frame. 2. A notch portion for receiving a side portion of the portion is formed, and when the child seat is pivoted forward, a lower side portion of the extension portion pivots rearward to be located at a rear side of the seat back frame. A child seat device for a vehicle as described in the above. 3. The vehicle child seat apparatus according to claim 2, wherein the extension portion is formed at a central position in a width direction of the child seat frame and has a width smaller than that of the child seat frame. 4. The child seat device for a vehicle according to claim 2, wherein a side portion of the extension portion comes into contact with an upper end of the notch portion when the child seat is pivoted forward.