JP3279137B2 - 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, one shown in FIGS. 5 to 7 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 2 and a pair of left and right seat backs 3 and 4. The left seat back 4 is fixed to the seat back panel 5, and the right seat back 3 has a structure in which the whole is tilted forward around the lower side, and the right seat back 3 is tilted forward. By doing so, the trunk through opening 6 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, the inertia force F of the occupant M is applied to the upper outlet 14 of the seat back frame 9 as tension via the seat belt 13 to cause the seat back 3 to lean forward and rotate. Since the upper right corner portion of the seat back 3 is fixed to the seat back panel 5 by the lock mechanism R, the seat back 3 does not rotate forward.
The tension of the seat belt 13 can be reliably received at the outlet 14. In addition, this child seat 8
Is used as an armrest when the occupant M cannot be placed thereon.

[0008]

As described above, in the prior art, the tension of the seat belt 13 is received by the outlet 14 of the seat back frame 9 and the seat belt 13
Thus, the protection performance of the occupant M can be sufficiently and reliably exerted. However, even with such a thorough structure, the seat back panel 5 of the seat back frame 9 can be used.
Is fixed at the lock mechanism R at the upper right corner, whereas the point of action of the tension of the seat belt 13 is at the outlet 14 at the upper left corner, so that an excessive inertia force F exceeding normal expectation was applied. In this case, the vicinity of the outlet 14 of the seat back frame 9 may be deformed to the front side (see FIG. 7), and the protection of the occupant M may be incomplete. Alternatively, it is necessary to provide another fixing point (locking mechanism R) also in the vicinity of the outlet 14, and the weight of the seat back 3 is increased.

The present invention has been made by paying attention to such a conventional technique, and provides a vehicle child seat apparatus capable of reducing the weight of a seat back frame.

[0010]

According to the first aspect of the present invention,
An opposing surface is formed on the upper part of each seat back frame, and a vertically long engaging hole is formed in each opposing surface in a corresponding state, and it is rotatable around a support pin near the engaging hole of one seat back frame. When the child seat is tilted forward and rotated by providing a simple rotating lever and connecting the base end of the rotating lever and the movable point on the side of the lower end of the child seat by a link extending substantially vertically. When the tip of the pivot lever rotates in the direction of engagement from one engagement hole into the other engagement hole, and the child seat is returned into the recess, the tip of the pivot lever is pivoted to the other engagement hole. It rotates in the direction in which it is pulled out of the hole. Here, the “movable point” is a point other than the rotation fulcrum on the side surface at the lower end of the child seat, and is a point at which the child seat can be circularly moved around the rotation fulcrum when the child seat is rotated.

According to the first aspect of the present invention, when the child seat is tilted forward when the seat belt is used, the tip of the rotating lever is engaged from one engaging hole into the other engaging hole. The upper portion of the left and right seat back frames are connected to each other by the rotating lever, so that even if tension is applied to the outlet from the seat belt, the vicinity of the outlet of the seat back frame is not deformed, and the occupant on the child seat is not deformed. Can be more reliably protected by the seat belt. This protection is possible without increasing the weight of the seat back.

According to a second aspect of the present invention, a long hole is formed in the rotating lever along the longitudinal direction of the rotating lever, and the long hole is attached by a support pin.

According to the second aspect of the present invention, since the rotary lever is formed with a long hole along the longitudinal direction and the long hole portion is attached with the support pin, the rotary lever is inserted into the other engagement hole. Can be deeply involved.

According to a third aspect of the present invention, the lower end side surface of the child seat is pivotally supported by a bracket, and a gap is provided between the bracket and the lower end side surface to avoid interference with a link. is there.

According to the third aspect of the present invention, since the gap is provided between the side face of the lower end portion of the child seat and the bracket, the link does not interfere with the bracket, and a reliable operating state of the link can be obtained.

According to a fourth aspect of the present invention, the other seat back is fixed to the vehicle body.

According to the fourth aspect of the present invention, since the other seat back is fixed to the vehicle body, the function of preventing deformation of the outlet portion of one seat back frame is to lock the other seat back. It is superior to the case of mounting via a mechanism.

[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.

The right (one) seat back 18 of the rear seat 17 of this embodiment has a lock mechanism R at the upper right corner.
And can be turned forward only when necessary by operating the lock mechanism R, and otherwise fixed to the vehicle body. Also, on the left (other side)
The seat back 19 is of a fixed type and has a structure in which the seat back cannot be turned forward at all. Inside each of the seatbacks 18 and 19, there are provided panel-type seatback frames 22 and 23 having flanges 20 and 21 around the periphery.
Flange 2 inside each seat back frame 22, 23
0a and 21a face each other as "opposing surfaces" in a state of approaching each other.

The lower end 24 of the child seat 8 provided in the recess 7 of the right seat back 18 is pivotally supported between the lower part of the flange 20a and the bracket 10 fixed to the seat back frame 22. . In particular,
Side surface of lower end 24 of child seat 8 and bracket 1
A gap S is secured between the bracket 1 and the bracket 1.
0 and the side surface of the lower end portion 24 are connected by a rotation shaft 25 as a “rotation fulcrum”.

The upper portions of the flanges 20a and 21a of the seat backs 18 and 19 are provided with vertically elongated engagement holes 2 respectively.
6, 27 are formed in a corresponding state. A rotation lever 28 is attached by a support pin 29 in the vicinity of the engagement hole 26 in the right seat back frame 22 and below the outlet 14 for the seat belt 13. The portion of the rotary lever 28 attached by the support pin 29 is an elongated hole 30. The rotary lever 28 is rotatable about the support pin 29 and has a long hole 30. It can slide along its own longitudinal direction.

The base end 28b, which is the right end of the turning lever 28, and the movable point P displaced from the turning shaft 25 on the side surface of the lower end 24 of the child seat 8, have the base end 28b movable in a front view. The position is located directly above the point P, and the base end 28b and the movable point P are connected by a link 31 extending in the up-down direction. The movable point P
When the child seat 8 is stored in the concave portion 7 (when the child seat 8 is turned back), the child seat 8 is positioned right after the turning shaft 25 (see FIG. 4). To position. That is, by accelerated rotating the child seat 8, the movable point P rises by H _1, it pushes up the only link 31 correspondingly. Note that the link 31 slightly tilts in the front-rear direction when moving up and down due to the change in the front-back position of the movable point P, but the lower end of the link 31 is moved with respect to the movable point P so as not to tilt in the left-right direction (front view). Installed. Furthermore, as described above, the gap S is secured between the side surface of the lower end portion 24 and the bracket 10 even though the link 31 is attached to the side surface of the lower end portion 24 of the child seat 8 as described above. The link 31 and the bracket 10 do not cause an interference problem.

On the other hand, when the child seat 8 is stored in the concave portion 7 (when the child seat 8 is rotated back), the pivot lever 28 is moved to the base end 28.
b is inclined lower than the support pin 29, and the end of the long hole 30 on the tip 28 a side is in contact with the support pin 29. Therefore, the tip 28a of the rotation lever 28 is located inside the engagement hole 26 and does not protrude from the engagement hole 26. In addition, when the child seat 8 is turned forward, the link 31 does not tilt in the left-right direction as described above, and the rising amount H _{1 of the} movable point P is increased.
H ₂ partial (link 31 substantially correspondingly min inclined at about a, H ₁
(Slightly different from the above)), so that the rotating lever 28 is rotated to be horizontal and the base end 2 of the long hole 30 is rotated.
The end on the 8b side comes into contact with the support pin 29. Therefore, the tip 28a of the rotating lever 28 is
From above into the engagement hole 27 on the left side, and the rotating lever 28 functions as a "locker" for both engagement holes 26, 27. In particular, since the elongated hole 30 is formed in the portion of the support pin 29 of the rotating lever 28, the tip 28a of the rotating lever 28 not only moves to the left due to the “rotation” but also has this length during the forward rotation. The "slide" corresponding to the length of the hole 30 also causes the lever 28 to move to the left, and the tip 28a of the rotating lever 28 can be engaged more deeply into the engaging hole 27 on the left.

As described above, when the child seat 8 is used by turning it forward and turning, the turning lever 28 turns so that its tip 28a is engaged from the right engaging hole 26 into the left engaging hole 27. The upper left corner of the right seat back frame 22 is connected to the upper right corner of the fixed seat back frame 23 on the left by the pivoting lever 28, so that it is caused by a vehicle collision or the like. Seat belt 1
Even if the tension of 3 acts on the outlet 14 located at the upper left corner of the seat back frame 22, the vicinity of the outlet 14 is not deformed to the front side, and the performance of protecting the occupant on the child seat 8 by the seat belt 13 is achieved. Is improved.

Then, after using the child seat 8,
When the child seat 8 is turned back into the concave portion 7, the turning lever 28 turns to the opposite side to the above, and its tip 28a
Is pulled out from the engagement hole 27 of the fixed type seat back frame 23, and the lock mechanism R at the upper right corner of the seat back 18 is operated so that the entire right side seat back 18 is turned forward and backward for trunk through. The operation can be performed without any trouble.

In the above description, the child seat 8
The lower end 24 of the seat back frame 2 is pivotally supported between the bracket 10 and the inner flange 20a.
2 may be provided with a pair of left and right brackets 10, and the lower end 24 of the child seat 8 may be supported between the two brackets 10.

Although the left seat back 19 is fixed, the left seat back 19 may be attached to the vehicle body panel by the lock mechanism R similarly to the right seat back 18.

Further, the position of the movable point P on the side surface of the lower end portion 24 of the child seat 8 may be set at any point as long as there is a vertical difference between before and after the child seat 8 is turned forward and rotated. However, when changing the movable point P, it is necessary to change the length of the link 31 accordingly.

In addition, the rear seat 17 of an automobile has been described as an example. However, the present invention is not limited to the automobile seat, but is applicable to all seats of vehicles such as ships, airplanes, and trains.

[0030]

According to the first aspect of the present invention, when the child seat is tilted forward when the seat belt is used, the tip of the rotation lever is engaged from one engagement hole into the other engagement hole. As a result, the upper portions of the left and right seat back frames are connected to each other by the rotating lever, and even if force is applied to the outlet from the seat belt, the vicinity of the outlet of the seat back frame is not deformed, and Can be more reliably protected by the seat belt. This protection is possible without increasing the weight of the seat back.

According to the second aspect of the present invention, the rotary lever is formed with a long hole extending in the longitudinal direction, and the long hole portion is attached with the support pin, so that the rotary lever is inserted into the other engagement hole. Can be deeply involved.

According to the third aspect of the present invention, since the gap is provided between the side face of the lower end portion of the child seat and the bracket, the link does not interfere with the bracket, and the link can be reliably operated.

According to the fourth aspect of the invention, since the other seat back is fixed to the vehicle body, the function of preventing deformation of the outlet portion of one seat back frame is to lock the other seat back. It is superior to the case of mounting via a mechanism.

[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 front view showing a structure near a rotation lever.

FIG. 3 is a front view showing the structure near the lower end of the child seat.

FIG. 4 is a schematic side view showing a structure near a lower end portion of the child seat.

FIG. 5 is a perspective view showing a conventional child seat apparatus.

FIG. 6 is a partial cross-sectional side view showing a state where an occupant is placed on a child seat.

FIG. 7 is an enlarged cross-sectional view showing a seat back frame at a portion indicated by DA in FIG. 6;

[Explanation of symbols]

 7 Concave portion 8 Child seat 13 Seat belt 14 Outlet 18 Seat back (one) 19 Seat back (the other) 20a Flange (one opposing surface) 21a Flange (the other opposing surface) 22 Seat back frame (one) 23 Seat back frame ( 25) Rotation shaft (rotation fulcrum) 26 Engagement hole (one) 27 Engagement hole (the other) 28 Rotation lever 28a Tip 28b Base end 29 Support pin 30 Long hole 31 Link P Movable point S Gap

Continuation of the front page (56) References JP-A-56-28023 (JP, A) JP-A-8-175245 (JP, A) JP-A-6-156132 (JP, A) JP-A-6-156130 (JP, A) , A) JP-A-7-251661 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) B60R 22/10 B60N 2/26

Claims (4)

(57) [Claims] 1. A seatback frame is provided in a pair of left and right seatbacks arranged adjacent to each other, and at least one of the seatbacks is tiltable forward and freely rotatable, and a vertically long recess is formed in one of the seatbacks. Along with
A child seat is provided in the concave portion that is rotatable forward and rotatable around a pivot point, and an outlet is formed in an upper portion of a seat back frame corresponding to the concave portion, and a seat belt pulled out from the outlet is provided. In a child seat device for a vehicle, which is coupled to a child seat and restrains and protects an occupant on the child seat by the seat belt, opposing surfaces are respectively formed on upper portions of the respective seat back frames, and a vertically long engaging hole is formed in each opposing surface. It is formed in a corresponding state, and a rotation lever is provided near the engagement hole of one of the seat back frames and is rotatable around a support pin, and the base end of the rotation lever and the side of the lower end of the child seat are movable. When the child seat is tilted forward and pivoted by connecting the points to the When the child seat is rotated from one engagement hole into the other engagement hole, and the child seat is returned into the recess and rotated, the tip of the rotation lever is pulled out from the other engagement hole. A child seat device for a vehicle, which turns. 2. The vehicle child seat apparatus according to claim 1, wherein an elongated hole is formed in the rotating lever along a longitudinal direction of the rotating lever, and the elongated hole portion is attached by a support pin. 3. The child seat according to claim 1, wherein the lower end side surface is pivotally supported by a bracket, and a gap is provided between the bracket and the lower end side surface to avoid interference with a link. Vehicle child seat device. 4. The vehicle child seat apparatus according to claim 1, wherein the other seat back is fixed to the vehicle body.