JPH07108862A - Vehicle seat - Google Patents

Abstract

PURPOSE:To make a vehicle seat usable by adults, children and even a baby by fitting an auxiliary cushion into the recessed portion of a cushion main body in such a way that it can be laid on top of the cushion main body, and pivotally attaching auxiliary arms to both sides of a seat back in such a way that they freely flip up and down. CONSTITUTION:A seat main body 10 comprises a cushion main body 11, an auxiliary cushion 12 consisting of a plurality of blocks 12a, 12b each of which is fitted into the recessed portion 11a of the main body 11, a seat back 13 that freely folds down, and auxiliary arms 14 pivotally attached to both sides of the seat back 13. In a configuration for adult use, the upper side of the cushion main body 11 joins with that of the auxiliary cushion 12, and the seat back 13 and the auxiliary arms 14 are in an upright position. In a configuration for children use, the auxiliary cushion 12 is laid on top of the cushion main body 11 and the recessed portion 11a serves as a footrest while the auxiliary arms 14 are pressed down. In a configuration for a baby, the seat back 13 folds down, forming a cradle-like seat portion.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle seat, and more particularly to a vehicle seat which can be used in a plurality of usage modes such as for adults, children, infants and babies.

[0002]

2. Description of the Related Art In vehicle seats, infants, young children,
Although it is desired to develop a seat suitable for children and the like, as shown in Japanese Utility Model Laid-Open No. 60-55545, an ordinary vehicle seat is improved so that it can be used for infants as well. It has been known.

In the vehicle seat of that example, a seat is used.
Gate-shaped restraint arms are attached to both sides of the bag so that it can be rotated in the front-rear direction. Normally, the restraint arms are erected so that they do not interfere with seating on the seat cushion. At the same time, when a baby is to be seated, the restraining arm is rotated forward so as to be in a substantially horizontal state, and the baby is seated between the restraining arm and the seatback.

In another example of a vehicle seat, a cushion piece capable of standing up and down is provided at the front center of the seat cushion, and a pair of cushion pieces is provided at the tip of the cushion piece at the top of the seat back. The seatbelt can be hooked, and in the normal case, the cushion piece should be removed from the seatbelt, and the seatbelt should be laid down so that the seat cushion has a flat surface so that seating is not hindered. In this case, the cushion piece is erected and the seat belt is hooked on the cushion piece to restrain the infant with the seat belt.

[0005]

By the way, both of the above-mentioned sheets can be changed to two usage modes, but more suitable usage modes, for example, for adults, children, infants, babies, etc. The mode cannot be adopted, and it cannot be said that it is a sufficient sheet for each of these persons. In addition, the vehicle seat generally adopts a seat shape suitable for the seated state of an adult, but when such seat shape is adopted in the former seat, the restraining arm becomes large and the infant is sufficiently protected. In addition, it is not possible to cope with the difference in the physical constitution of the infant. Further, in the latter seat described above, the physical size of the infant that can be protected is roughly determined by the mounting position of the cushion piece attached to the seat cushion, and even with such a seat, the infant cannot be sufficiently protected, and Cannot properly deal with the difference in physique. Therefore, an object of the present invention is to provide a vehicle seat that can adopt a plurality of usage modes suitable for, for example, adults, children, infants, babies and the like.

[0006]

SUMMARY OF THE INVENTION The present invention is a vehicle seat that can be changed into a plurality of usage modes. The seat is horizontally connected to the cushion body and the front end portion of the cushion body. An auxiliary cushion body that forms a seat cushion together with the cushion body and is superimposable on the cushion body, and a seat back that is rotatably assembled at its lower end portion to the rear end portion of the cushion body and can be tilted back and forth and stand up. And a gate-shaped protection arm that is mounted rotatably in the front-rear direction on both sides of the seatback and is located along the outer periphery of the seatback, and the seatback and the protection arm. Adjusting means provided between the adjusting arms for adjusting the amount of protrusion of the protective arm from the seat back, and unlocking of the protective arm in the adjusting means with respect to the seat back. And it is characterized in that it comprises a removal means.

[0007]

In the vehicle seat having the above-described structure, when the seat back and the protective arm are in the upright state, the seat is used as a normal seat, for example, an adult or a person close to a student who is close to the physique. It can be used as an optimal sheet. Further, if the auxiliary cushion body is superposed on the upper surface side of the cushion body from this state, the seating portion of the seat becomes shorter and becomes higher.
The relationship with the bag is also appropriate, and it can be used as an optimal seat for children such as children.

Further, when the protective arm is rotated forward from this state, the protective arm protects the body of an infant having a smaller size than that of the child, so that the seat can be used as an optimal seat for the infant. Also, in a seat in a normal use state, the seat back is laid down forward to overlap the upper surface side of the seat cushion, and in this state, the tip end side of the protective arm is pivoted slightly upward to be lifted. For example, the back of the seat back and the protective arm form a cage-like seat, which can be used as a seat particularly suitable for seating or bed of an infant. When the protective arm is used among these modes of use, the amount of protrusion of the protective arm from the seatback can be adjusted, so that infants, babies and the like can be protected more appropriately.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a vertical sectional side view of a vehicle seat according to the present invention, and FIGS. 4) shows four usage modes of the sheet. As shown in FIGS. 1 to 3, the seat is basically composed of a seat body 10 and an adjusting mechanism 20, and the seat body 10 includes a cushion body 11, an auxiliary cushion body 12, and a seat back 13. And a protective arm 14.

Cushion body 11 and auxiliary cushion body 1
2 is a sheet cushion, and the cushion main body 11 is provided with a recess 11a in its front portion, and the auxiliary cushion body 12 is formed in a shape that fits into this recess 11a. The auxiliary cushion body 12 includes two block bodies 12
a and 12b are connected to each other, and the block body 12
The rear edge of a is connected to the upper edge of the rear end of the recess 11a of the cushion body 11. As shown by the solid line in FIG. 1, the auxiliary cushion body 12 has a recess 11 in the cushion body 11.
When the fixing strap 15a provided in the lower end of the block body 12b is fixed to the fixing pin 15b provided on the support member for supporting the cushion body 11, the fixing strap 15a and An ordinary sheet cushion is formed on the object. In this state, strap 1
5a is removed from the fixing pin 15b, the auxiliary cushion body 12 is moved to the cushion main body 1 as shown by the chain double-dashed line in FIG.
1 can be polymerized on the upper surface side.

The seat back 13 has a normal size, and its lower end is assembled to the rear portion of the cushion body 11 by a known reclining mechanism 15c. See
The back bag 13 can be rotated in the front-rear direction by unlocking the lock by the reclining mechanism, whereby the tilt angle in the front-rear direction is adjusted, and as shown in FIG. Can be polymerized on the upper surface side of the cushion. The protection arm 14 has a gate-like shape, and is rotatable in the front-rear direction at the lower end of each of the seat backs 13 via an adjusting mechanism 20 which will be described later in the middle of the left and right sides of the seat back 13. It is assembled so that the amount of protrusion with respect to can be adjusted. As a result, the protective arm 14 is
Can be changed to the standing state shown in (a) and (b), the horizontal state protruding forward as shown in (c) of the figure, and the raised state held upward as shown in (d) of the figure. In FIG. 2, reference numerals 16a and 16b denote seat belts for infants.

Therefore, the adjusting mechanism 20 is provided with the adjusting means of the present invention and the releasing means for releasing the lock of the adjusting means, and is arranged at the position shown in FIG. 3 and shown in FIGS. It is configured as shown in FIG. That is, the adjusting mechanism 20 is disposed between each of the left and right side portions of the back frame 13a that constitutes the seat back 13 and each of the left and right side portions of the frame 14a that constitutes the protective arm 14.

The adjusting mechanism 20 includes a pole 21 and a ratchet 2.
2, the connecting arm 23, the operation cable 24, the operation handle 25, and the three support plates 26a, 26b, 27 are the main constituent members. First and second support plates 26
The flanges a and 26b are fixed to each other with their flanges fitted to each other, and accommodate the pole 21, ratchet 22, and connecting arm 23 in a supported state. Paul 2
1 and the ratchet 22 are both support plates 26a, 26.
The first support pin 28a is fixed in a fitted state on the first support pin 28a through which b is inserted, and the first support pin 28a is rotatably supported by both support plates 26a and 26b. Further, the ratchet 22 is inserted through a first elongated hole 27a of a third support plate 27, which will be described later, and both ratchet plates 2
It is fixed on the second support pin 28b through which 6a and 26b are inserted.

The third support plate 27 has a first elongated hole 27a in the main surface portion and a pair of second elongated holes 2 in both side surface portions.
7b, it is fitted into the frame 14a of the protection arm 14 integrally with both support plates 26a, 26b by the second support pin 28b inserted into the first elongated hole 27a, and in this state, it is attached to the back frame 13a. It is assembled to the fixed bracket 13b. The second elongated hole 27 of the third support plate 27 is formed in the frame 14 a of the protection arm 14.
A pair of elongated holes 14b facing b are provided.
The third support pin 28c is inserted through both the long holes 14b, both the long holes 27b of the fitted third support plate 27, and the both through holes 26c provided in the first support plate 26a. The support plates 26 a and 27 are supported by the frame 14 a of the protection arm 14. As a result, the protection arm 14 can rotate in the front-rear direction integrally with the adjusting mechanism 20 with the second support pin 28b as a fulcrum, and can move in the longitudinal direction integrally with the third support plate 27 with the support pin 28b as a fulcrum. is there.

In the adjusting mechanism 20, the pole 21
The lower end portion of the inner wire 24a forming the operation cable 24 is connected to the latching pin 21a protruding from the protection arm 14 as shown in FIGS. 5 (a) and 5 (b). Is connected to an operation handle 25 rotatably supported by a bracket 14c fixed to the frame 14a. An upper end of a compression spring 28d is hooked on the hooking pin 21a, and the spring 28d
The lower end of d is hooked on the lower edge of the second support plate 26b. As a result, the pole 21 is meshed with the ratchet 22 by the biasing force of the compression spring 28d. On the other hand, the connecting arm 23 is provided with a lock pin 23a, and the lock pin 23a penetrates a side portion of the second support plate 26b, and a lock hole 27c provided in the third support plate 27 and a frame of the protection arm 14. It penetrates one of the lock holes 14d provided in 14a. As a result, the adjusting mechanism 20 fixes the protective arm 14 to the seat back 13 in a locked state, and the bent end of the adjusting mechanism 20 penetrates through the long hole 26d provided in the second support plate 26b. The protection arm 14 is restricted from rotating in the front-back direction and moving in the longitudinal direction.

In the vehicle seat constructed as described above, the protective arm 14 is locked with respect to the seatback 13 when the operating handle 25 of the adjusting mechanism 20 is not operated, and the protective arm 14 rotates in the front-rear direction and longitudinally. Movement in the direction is restricted. In this state, the operation handle 25 is rotated upward to operate the inner wire 2 of the operation cable 24.
When 4a is extended, the pole 21 rotates and the first
The support pin 28a and the connecting arm 23 rotate. Therefore, the lock pin 23 a provided on the connecting arm 23 is connected to the frame 14 a of the protection arm 14 and the third support plate 2.
7, the protective arm 14 is rotatable in the front-rear direction integrally with the entire adjustment mechanism 20, and is movable in the longitudinal direction together with the third support plate 27.

When the turning operation of the operation handle 25 is released, the urging force of the compression spring 28d causes the pole 2 to move.
1, the first support pin 28a and the connecting arm 23 return to rotate, the pole 21 meshes with the ratchet 22, and the lock holes 14d, 2 having a plurality of lock pins 23a.
7c, so that the protective arm 14
Is locked by the seat back 13 and its rotation and movement are restricted. The rotation and movement of the protective arm 14 are arbitrary, and they can be performed simultaneously or independently of each other.

Therefore, the vehicle seat can be changed to the usage patterns shown in FIG. The use mode of FIG. 3A is a use mode for adults, and in this use mode, the seat cushion is the cushion main body 11.
And the auxiliary cushion body 12, the seat back 13 is in an upright state, and the protective arm 14 is provided.
Is standing up. As a result, the seat exhibits a normal state, which is suitable for seating an adult and a child having a similar physical size. In this case, the body is held by an ordinary seat belt (not shown), and the top of the protective arm 14 functions as a headrest.

In the seat in the state shown in FIG. 2 (a), the seat in the state in which the auxiliary cushion body 12 is superposed on the upper surface of the cushion body 11 is the use mode for children shown in FIG. 2 (b). In the usage mode, the upper surface of the superposed auxiliary cushion body 12 serves as a seating portion, and the seating portion is located higher than the seating portion of the seat shown in FIG. The relationship and relationship with the top of the protective arm 14 is appropriate for the child. In this case as well, the seat belt (not shown) holds the body of the child, and the recess 11a on the front side of the cushion body 11 functions as a footrest for the child.

In the seat in the state shown in FIG. 2B, the protective arm 14 is unlocked from the seatback 13 by rotating the operating lever 25 of the adjusting mechanism 20, and the protective arm 14 is moved forward. It is rotated so as to be projected in a substantially horizontal state. In this use mode, the seating portion is the upper surface of the superposed auxiliary cushion body 12 as in the use mode for children, and the child seated on this seating portion is located inside the protective arm 14 and the protective arm 14 And is held by the child seat belts 16a and 16b. In this case, in order to ensure the protection of the seated person by the protection arm 14, the amount of forward projection of the protection arm 14 and the inclination angle in the front-rear direction can be arbitrarily adjusted.

The mode of use shown in FIG. 2 (d) is for a baby. In this mode of use, the seat cushion is composed of the cushion body 11 and the auxiliary cushion body 12, and the seat back 13 is used. Is in a state of being overturned forward, and the tip end side of the protective arm 14 is lifted by a predetermined height. In this mode of use, the back of the polymerized seat back 13 and the protective arm 14 form a rocking cage-shaped seating portion, and the baby is laid down on the cage-shaped seating portion. In this case, the legs of the baby are inserted into the pockets 13c made of cloth formed on the back of the seat back 13 to further protect the baby. In this case,
By adjusting the angle of inclination of the protective arm 14 with respect to the seatback 13 and the amount of lifting, the depth of the cage-shaped seating portion to be formed can be arbitrarily set.

As described above, the vehicle seat according to this embodiment can be used by changing to four usage modes suitable for adults, children, infants, and babies, resulting in a large difference in physique. It is possible to make an optimal seated state for a certain occupant. In the vehicle seat of the present embodiment, an example in which the same adjusting mechanism 20 is provided in a pair on the left and right sides is shown, but in the present invention, the adjusting mechanism 2 is provided on only one of the left and right sides.
0 is arranged, and the other one is a protective arm 1 against the seat back.
4 may be assembled so as to be rotatable in the front-rear direction and movable in the longitudinal direction.

[Brief description of drawings]

FIG. 1 is a vertical sectional side view of a vehicle seat according to the present invention.

[Fig. 2] Fig. 2 is a view showing a usage pattern of the sheet, which is a usage pattern for adults (a), a usage pattern for children (b), a usage pattern for infants (c), and a usage pattern for infants (d). Is.

FIG. 3 is a perspective view showing a back frame and a frame of a protection arm in the seat.

FIG. 4 is a side view of an adjusting mechanism in the seat.

FIG. 5 is a front view (a) of the adjusting mechanism and its arrow 5;
It is a cross-sectional plan view (b) seen in the -5 line direction.

FIG. 6 is an exploded perspective view of the adjusting mechanism.

[Explanation of symbols]

10 ... Seat body, 11 ... Cushion body, 12 ... Auxiliary cushion body, 13 ... Seat back, 14 ... Protective arm, 14a ... Frame, 14b ... Oblong hole, 14d ... Lock hole, 16a, 16b ... Seat belt, 20 … Adjustment mechanism,
21 ... Pole, 22 ... Ratchet, 23 ... Connection arm,
23a ... Lock pin, 24 ... Operation cable, 25 ... Operation handle, 26a, 26b, 27 ... Support plate, 27
a, 27b ... elongated hole, 27c ... lock hole, 28a, 28
b, 28c ... Support pin, 28d ... Compression spring.

Claims (1)

[Claims] 1. A cushion main body, an auxiliary cushion body which is horizontally connected to a front end portion of the cushion main body, forms a sheet cushion together with the cushion main body, and is superimposable on the cushion main body, and the cushion main body. A seat back whose lower end is rotatably attached to the rear end of the seat back so that the seat back can be laid down and erected forward and backward, and the seat back is rotatably attached at both sides of the seat back. A gate-shaped protective arm located along the outer periphery of the protective arm, adjusting means provided between the seatback and the protective arm for adjusting the amount of protrusion of the protective arm from the seatback, and the adjusting means. The sheath of the protective arm in the means
A vehicle seat, comprising: a release unit that releases a lock to the tobacco.