JP2000025563A - Automobile seat used for both adult and child - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a seat belt device of an automobile seat used for both an adult and a child which is improved in fitting operability when used for a child, and difficult to detach even when subjected to a shock. SOLUTION: An automobile seat used for both an adult and a child is provided with a seat for a child which is projected upward from a seat cushion, and a seat belt device 20 having a belt 21 provided with a shoulder belt part 21a extending downwardly in a diagonal direction on a forward side of a seat back. A belt guide device 30 of the seat belt device is provided with a shoulder tongue plate 35 through which the shoulder belt part is movably passed and a shoulder buckle 31 which is fitted to a shoulder part of the seat back and locks the shoulder tongue plate in an attachable/detachable manner. A button 21c is sewn to a surface of a part of the shoulder belt 21a so that the shoulder tongue plate is not moved downward over a specified range.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an adult / children's automobile seat provided with a seat belt device having good restraint in a child use state, and more particularly to a seat belt device having a good operability in use in a child and being hard to come off. And car seats for adults and children.

[0002]

2. Description of the Related Art Seats for adults and children,
For example, as shown in FIG. 3, a seat cushion 10 having a concave portion 10a formed on an upper surface, and a seat back 15 rising upward from a rear end portion thereof, and an adult use position stored in a concave portion 10a in a rear half portion of the seat cushion 10. In some cases, the child seat 11 is supported so as to be able to move up and down by four undulating links 12 so as to be selectively positioned at a child use position projecting upward from the seat cushion 10. For example, a three-point seat belt device 20 shown in FIG. 3 is used for such an adult / children's automobile seat. The belt 21 has a shoulder anchor 24 having one end attached to a pillar portion of a vehicle body or the like. And the other end is connected to the vehicle body floor surface on the shoulder anchor 24 side by an outer anchor, and the waist tongue plate 22 movably inserted into the intermediate portion of the belt 21 is a floor on the vehicle body center side. It is detachably locked to a waist buckle 23 attached to the surface via a strap 23a. In this mounting state, the shoulder belt portion 21a between the shoulder anchor 24 and the waist tongue plate 22 extends obliquely from top to bottom through the front side of the seat back 15, and restrains the occupant.

[0003] As shown in FIG. 3, a shoulder anchor 25 for a child fixed to the upper outer shoulder of the seat back 15 includes:
As shown in FIGS. 4 and 5, it has an L-shaped cross section, and its horizontal portion is fixed to the bracket 16b of the seat back frame 16 by mounting bolts 26, and a slit 25a for inserting the shoulder belt portion 21a of the belt 21 is provided in the upright portion. Is provided. The shoulder anchor 25 for a child has a two-sided hanger type (see FIG. 5 (a)) in which a slit 25a is formed by a pair of protrusions 25b extending inward from both ends of the upright portion. There is a one-side hanger type (see FIG. 5B) in which a slit 25a is formed by a protruding portion 25c extending in the direction, and each is a metal plate covered with a synthetic resin.

[0004] The seat belt device 20 is used for both adults and children.
0a, the belt 21 is not inserted into the hook 11a and the shoulder anchor 25 for the child, and the waist tongue plate 22 inserted through the intermediate portion of the belt 21 is locked to the waist buckle 23 to restrain the seated adult. . In the child use state, the child is seated on the child seat 11 projecting upward from the seat cushion 10 as shown in FIG. 3, and the waist tongue plate 22 inserted through the intermediate portion of the belt 21 is locked to the waist buckle 23. Then, insert both sides or one side of the lap belt portion 21b passing above the thighs of the seated child into the hooks 11a fixed to both sides or one side of the frame of the child seat 11, and further pass through the front side of the upper body of the child from above. Shoulder belt portion 21a extending diagonally downward
The upper part of the shoulder belt 21a is inserted into a shoulder anchor 25 for a child fixed to the outer shoulder of the seat back 15 to change the path of the shoulder belt portion 21a so as to match the body shape of the child. Belt part 21
a to enhance the restraint.

[0005] Note that the shoulder anchor 25 for children has a structure shown in FIG.
There is also a pinch type as shown in Fig. This is the main unit 2
The hole 27b formed in the headrest 7 is inserted into the stay of the headrest 14 and attached to the seat back 15. The main body 27 is integrally formed with a protrusion 27a extending on the outer shoulder of the seat back 15. Arm 2 pivotally attached to the rear side of the root of
8 is urged forward by a spring (not shown) as shown by arrow X. The movable arm 28 is opened against the spring, and the shoulder belt 21a is
7a, the movable arm 28
And the shoulder belt portion 21a is sandwiched between the protruding portion 27a and the movable arm 28.

[0006]

A shoulder anchor 25 for a child of both hanger type shown in FIG. 5 (a) is formed by bending a shoulder belt portion 21a along a longitudinal direction from a gap between a pair of protrusions 25b. There is a problem that the operability at the time of wearing the seat belt device is poor because it has to be inserted. The one-sided hanger type child's shoulder anchor 25 shown in FIG. 5 (b) is easy to insert the shoulder belt portion 21a, but depending on the direction of the force when receiving an impact, the shoulder belt portion 21a may be attached to the child's shoulder anchor. It may deviate from 25 and lower the restraint. In addition, a pinch type shoulder anchor 25 for a child shown in FIG.
Requires the operation of opening the movable arm 28 against the spring, so that the operability when mounting the seat belt device is poor, and the distance from the mounting position to the load applying position is long, so that the strength and rigidity are insufficient. Tends to. An object of the present invention is to solve each of these problems.

[0007]

SUMMARY OF THE INVENTION According to the present invention, there is provided an adult / pediatric automobile seat having a concave portion formed on the upper surface of a rear half portion, a seatback rising upward from a rear end thereof, and a seat cushion having a concave portion in the seat cushion. A child seat selectively supported at an adult use position accommodated in the vehicle and a child use position projecting upward from the seat cushion; and a shoulder belt portion extending obliquely from top to bottom through a front side of the seat back. The present invention relates to a seat for an adult / children's automobile provided with a seat belt device having a belt provided with a shoulder belt, wherein the seat belt device has a shoulder tongue plate having an opening hole through which the shoulder belt portion is inserted so as to be movable in a longitudinal direction. A shoulder attached to a shoulder portion of the seat back near where the shoulder belt portion passes. By inserting the tip of Gupureto it is characterized in that it comprises a belt guide unit composed of the shoulder buckle having a release button to disengage the locking as well as locking the same shoulder tongue plate. In the adult use state, the seat belt device restrains the seated adult without locking the shoulder tongue plate to the shoulder buckle. In the child use state, the shoulder tongue plate is locked to the shoulder buckle, and the child seated on the child seat is restrained by the seat belt device. By also locking the shoulder tongue plate to the shoulder buckle, the path of the shoulder belt portion is changed to conform to the body shape of the child seated on the child seat.

In the above invention, it is preferable that a button is provided on the shoulder belt portion of the belt so as to protrude from the surface thereof and prevent the shoulder tongue plate from moving downward beyond a necessary range.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below mainly with reference to FIGS. The vehicle seat for adults and children according to this embodiment differs from the prior art described with reference to FIGS. 3 to 5 in that the shoulder belt portion 21a of the seat belt device 20 is provided on the outer shoulder of the seat back 15 in a child use state. The only difference is the belt guide portion (encircled by a two-dot chain line circle A in FIG. 3) that restrains the other portions, and the other portions are substantially the same. This will be described with reference to FIG.

The seat back 15 is, as shown in FIG.
The seat back frame 16 includes a seat back cushion pad 17 covering a front side and an outer peripheral portion thereof, and a seat back cover 18 covering an outer surface of the seat back cushion pad 17 and having a peripheral portion attached to the seat back frame 16. Seat belt device 2 shown in FIG.
A bracket 16a having a U-shaped cross section is provided on the rear side of an outer shoulder portion (corresponding to a portion indicated by a circle A of a two-dot chain line in FIG. 3) of the seat back frame 16 in the vicinity where the zero shoulder belt portion 21a passes. Welding is fixed. This bracket 1
The shoulder buckle 31 fixed to 6a and the shoulder tongue plate 35 detachably engaged with the shoulder buckle 31 have substantially the same structure as the conventional waist buckle 23 and the waist tang plate 22, respectively, shown in FIG. Both members 31 and 35 constitute a belt guide device 30 used in a child use state.

As shown in FIGS. 1 and 2, the shoulder buckle 31 is fixed to the seat back frame 16 by fastening a mounting portion 31a protruding downward to the bracket 16a with mounting bolts. The shoulder buckle 31 extends upward through a hole 19 formed in the seat back cushion pad 17 and the seat back cover 18, and has a shoulder tongue plate described below on its upper surface exposed upward from the outer shoulder of the seat back 15. The insertion hole 32 for inserting the tip 35b of the 35 is formed,
On one side thereof, there is provided a release button 33 for detaching the distal end 35b of the shoulder tongue plate 35 which is inserted into the insertion hole 32 and locked.

The shoulder tongue plate 35 has a hole 3
The belt insertion portion 35a is covered with a synthetic resin by a metal plate including a belt insertion portion 35a in which the belt 6 is formed and a tip portion 35b having a narrower width and a lock hole 37 formed in the tip portion 35b. When the tip portion 35b of the shoulder tongue plate 35 is inserted into the insertion hole 32 of the shoulder buckle 31, the claw (not shown) inside the shoulder buckle 31 automatically engages with the lock hole 37, and the shoulder buckle 31
When the release button 33 is depressed, the claw retreats, disengages from the lock hole 37, and can be disengaged. The shoulder belt portion 21a of the belt 21 is inserted in the opening hole 36 of the shoulder tongue plate 35 so as to be movable in the longitudinal direction.
Is attached, and the shoulder tongue plate 35 is locked to the shoulder buckle 31, and the belt insertion portion 35a is
A button 21c is sewn on a part of the shoulder belt portion 21a which is slightly lower, so as to protrude from the surface thereof. This button 21c is
When the belt is not used, the shoulder tongue plate 35 slides down beyond the normal use range, and then the belt guide device 3
This is to prevent the trouble of inserting the shoulder tongue plate 35 into the shoulder buckle 31 from being increased when using the No. 0.

In this embodiment, the child seat 11 is provided with a concave 10
a, and the waist tongue plate 22 inserted through the intermediate part of the belt 21 of the seat belt device 20
The shoulder tongue plate 35 is not locked to the shoulder buckle 31 by restraining the adult seated on the seat cushion 10 by locking the shoulder tongue 3. In this state, the path of the shoulder belt portion 21a matches the body shape of an adult.

In the child use state, as shown in FIG. 3, the child seat 11 protrudes upward from the seat cushion 10.
First, a child is seated on the upper part, first, as in the case of an adult, the waist tongue plate 22 inserted through the intermediate portion of the belt 21 of the seat belt device 20 is locked to the waist buckle 23, and then the child seat 11 and the child's thighs Of the lap belt 21b passing through the upper side of the child seat 11 into the hooks 11a fixed to both sides or one side of the child seat 11, furthermore, the shoulder tongue plate 35 is locked to the shoulder buckle 31, and passes through the seat back 15 and the front side of the upper body of the child. The shoulder belt portion 21a extending obliquely is restrained and its path is changed so as to match the body shape of the child. Thereby, the child seat 11
The restraint is improved because the child sitting on the upper part, especially the vicinity of the shoulder, does not come off the shoulder belt portion 21a. Restriction and release of the shoulder belt portion 21a by the belt guide device 30 performed in a child use state are performed only by inserting the distal end portion 35b of the shoulder tongue plate 35 into the insertion hole 32 of the shoulder buckle 31 and releasing the release button 3.
Since the user only has to press the button 3, it is extremely easy to attach and detach the seat belt device 20 during child use.

The shoulder belt portion 21a is inserted into the opening 36 of the shoulder tongue plate 35. Unless the shoulder tongue plate 35 is released from the shoulder buckle 31, the shoulder belt portion 21a will not come off the shoulder buckle 31. Since there is no impact, the child is always restrained regardless of any impact, and does not come off the shoulder belt portion 21a.

In this embodiment, the shoulder buckle 3
1 and the shoulder tongue plate 35 can be substantially the same as or slightly modified from the conventionally used waist tongue plate 22 and waist buckle 23, so that no new investment for manufacturing is required. Only a small amount is required, and the manufacturing cost is reduced.

In this embodiment, the shoulder belt portion 21a is provided with a button 21c, and when the belt 21 is not used, the shoulder tongue plate 35 does not slide downward beyond the normal use range. When the belt 21 is attached in the state, the shoulder tongue plate 35
It does not take much time to insert the buckle into the shoulder buckle 31.

In the above embodiment, the case where the seat belt device 20 including the belt guide device 30 is applied to a one-seat seat has been described. However, the present invention can be applied to one side of a bench seat. . In this case, the waist buckle 23 can be attached near the center of the seat cushion frame. Further, in the above embodiment, an example in which a three-point seat belt device is used has been described. However, the present invention can be implemented using another type of seat belt device having a shoulder belt portion 21a such as a diagonal seat belt. .

[0019]

According to the present invention, in the child use condition, the path of the shoulder belt portion is changed to fit the child's body shape by locking the shoulder tongue plate to the shoulder buckle, so that the child's seat can be used. A child sitting on the
In particular, the vicinity of the shoulder does not come off the shoulder belt portion, and the restraint property is improved. In addition, the locking for this is performed by inserting the tip of the shoulder tongue plate into the shoulder buckle, and the release of this locking is performed by the release button, so the mounting and dismounting of the shoulder tongue plate is extremely easy, The operability of wearing the seatbelt device during child use is improved. Further, since the shoulder belt portion is inserted into the opening of the shoulder tongue plate, the shoulder belt portion does not come off the shoulder buckle unless the locking of the shoulder tongue plate with the shoulder buckle is released. In the event of an impact, the restraint is not compromised.

According to the shoulder belt portion of the belt provided with a button for preventing the shoulder tongue plate from moving downward beyond the required range, the shoulder tongue plate can be used normally when the belt is not used. Since the belt does not slide downward beyond the range, there is no trouble in inserting the shoulder tongue plate into the shoulder buckle when the belt is worn in a child use condition, and the mounting operability is further improved.

[Brief description of the drawings]

FIG. 1 is a partially enlarged cross-sectional view showing the vicinity of a belt guide device mounting portion of one embodiment of an adult / children's automobile seat according to the present invention.

FIG. 2 is a perspective view showing the vicinity of a belt guide device mounting portion excluding a seat back of the embodiment shown in FIG. 1;

FIG. 3 is an overall perspective view showing an example of the prior art of an adult / children's automobile seat provided with a seat belt device.

4 is a partially enlarged cross-sectional view of the conventional shoulder anchor attachment portion for a child shown in FIG.

5 is a perspective view showing two examples of a shoulder anchor for a child according to the prior art shown in FIG. 3;

FIG. 6 is a perspective view showing an example of a child shoulder anchor different from FIG. 4;

[Description of Signs] 10: seat cushion, 10a: recess, 11: child seat, 15: seat back, 20: seat belt device, 21: belt, 21a: shoulder belt portion, 21c
... button, 30 ... belt guide device, 31 ... shoulder buckle, 33 ... release button, 35 ... shoulder tongue plate, 35b ... tip, 36 ... opening hole.

Claims (2)

[Claims] 1. A seat cushion having a concave portion formed on the upper surface of a rear half portion, a seat back rising upward from a rear end portion, and an adult use position stored in the concave portion of the seat cushion projecting upward from the seat cushion. A child seat selectively supported in a child use position, and a seat belt device having a belt with a shoulder belt portion extending obliquely from top to bottom through the front side of the seat back. In the vehicle seat, the seat belt device may include a shoulder tongue plate having an opening through which the shoulder belt portion is inserted so as to be movable in a longitudinal direction, and a shoulder portion of the seat back near the passage of the shoulder belt portion. The shoulder tongue plate is attached by inserting the tip of the shoulder tongue plate. A vehicle seat for adults and children, comprising a belt guide device comprising a shoulder buckle having a release button for locking and releasing the lock. 2. A shoulder belt portion of the belt is provided with a button protruding from the surface thereof to prevent the shoulder tongue plate from moving downward beyond a range necessary for operation of the seat belt device. Item 4. An adult / pediatric vehicle seat according to item 1.