JPS60131334A - Vehicle seat - Google Patents

Abstract

PURPOSE:To make it possible to use a vehicle seat for a child without the normal function of the seat being detracted, by providing a support member for the upper half body of a child and as well a seat belt on the rear surface of a seat back. CONSTITUTION:The seat back 12 of a seat is supported by means of a movable support mechanism 14 consisting of link members 20, 22, to a seat cushion 10, movably back and forth, and may be secured at two points by engaging a pin on a knob 38 provided in a reclining mechanism 18, into a fixing holes 30, 32. The rear section of the seat back 12 is formed therein with a recessed part 42 to form side suport sections 44a, 44b. A seat belt 46 consisting of a waist belt 46b which is connected to a buckle 46a, and two shoulder belts 46c connected to the waist belt 46b is attached to the bottom section of the recessed part 42.

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Technical Field The present invention relates to a vehicle seat, and particularly to a vehicle seat that can be used as a child seat by using the back surface of the seat back.

(B) Prior Art A conventional vehicle seat that can also be used as a child's seat is the one shown in FIG. 1 of Japanese Utility Model Application No. 58-87631. A seat plate 2 is rotatably attached to the back surface (rear surface in the longitudinal direction of the vehicle) of a seat back l constituting the seat, and a crotch support member 3 and a The belt 4 and the side support members 5 are attached. Normally, these members are folded into the back of the seat back 1, but when the child seat is used, they are taken out as shown. However, such a conventional vehicle seat has a structure in which the seat plate 2 is supported by the back surface of the seat back 1, which poses a problem in the comfort of the child seat. In other words, there is no space between the child and the rear seat passenger, making it cramped, and there is no place to put the child's feet, making it less stable.Furthermore, the seat back is tilted in the opposite direction, making it impossible to lean back. . If sufficient space is not secured between the rear seat occupant and the rear seat occupant, there is a problem in that the rear seat occupant is likely to come into contact with a child in the event of a collision, sudden braking, or the like.

Furthermore, the ride comfort was also poor because the vibrations of the vehicle body were directly transmitted to the seat plate 2 via the seat back l. Furthermore, since the child is seated on the back side of the seat back 1, the driver cannot monitor the child's condition. In addition, since all of the child's weight acts on the seat back 1 through the seat plate 2, the seat plate 2
It was necessary to sufficiently increase the strength of the connecting portion of the seat back l and the seat back l itself.

(c) Purpose of the Invention The present invention provides good comfort and riding comfort when used as a child's seat without impairing its functions when used as a normal seat, and allows a seated child to easily ride the driver's seat. The objective is to obtain a vehicle seat that can be seen in the field of view.

B) Structure of the Invention The vehicle seat according to the present invention includes a seat cushion, a seat back, a seat back movable support mechanism that supports the seat back movably in the front and rear directions with respect to the seat cushion, and a seat back that supports the rear part of the seat cushion. an upper body support that supports the back and sides of the child's body, comprising a locking mechanism that can be fixed to the seat cushion at at least two positions, and a generally concave horizontal section provided on the back of the seat back; and a seat belt provided on the back side of the seat back.

(e) Examples Examples of the present invention will now be described with reference to FIGS. 2 to 10 of the accompanying drawings.

(First Embodiment) This vehicle seat, which shows a first embodiment of the present invention in FIGS. 2 to 6, has a seat cushion 10 and a seat back 12, both of which are supported by a seat back movable support mechanism 14. connected. The seat/height movable support mechanism 14 includes a slide member 16 connected to the seat cushion 10.
and link members 2O and 22 that connect the fixed arm 18a of the reclining mechanism 18 connected to the seat back 12. Link members 20 and 2
2 is rotatably connected at both ends to the slide member 16 and the fixed arm 18a by a pin. The slide member 16 is a guide rail 2 fixed to the vehicle body floor.
4 so as to be movable in the horizontal direction. Thereby, the seat cushion 10 can be moved to a predetermined position in the longitudinal direction. The reclining mechanism 18 has a fixed arm 18a and a movable arm 18b, and the movable arm 18b can be stopped at a desired angular position with respect to the fixed arm 18a. Movable arm 18b
is fixed to the lower side of the seat back 12. This allows the seat back 12 to be tilted at a desired angle. 2 on the side surface 10a of the seat cushion 10.
two stopper members 26 and 28 and two fixing holes 3
O and 32 are provided. The stopper member 28 can restrict the rotation of the link member 22 and stop it in the state shown in FIG. 2. Further, the stopper member 26 can restrict the rotation of the link member 20 and stop it in the state shown in FIG. 3. The fixing arm 18a is provided with a fixing pin 34 shown in detail in FIG. 4. Fixing pin 34
and the aforementioned fixing holes 30, 32 constitute a locking mechanism. As shown in FIG. 4, the fixing pin 34 is attached to the bracket 3.
6 and has a knob 38 attached thereto. Further, the fixing pin 34 is pressed rightward in FIG. 4 by a spring 40 interposed between the fixing pin 34 and the bracket 36. In the state shown in FIG. 2 in which the link member 22 is stopped by the stopper member 28, the fixing pin 34
is placed at a position corresponding to the fixing hole 32.

Further, in the state shown in FIG. 3 in which the link member 20 is stopped by the stopper member 26, the fixing pin 34 is placed at a position corresponding to the fixing hole 30.

Therefore, the fixing pin 34 pressed by the spring 40 is fitted into the fixing hole 32 and the fixing hole 3O, respectively, in the state shown in FIGS. 2 and 3. By doing this, the fixed arm 18a (and the seat back 12 connected to it) can be fixed to the seat cushion 10.
It can be securely fixed against. seat back 1
A concave portion 42 is provided on the back surface of the device 2 so that the cross section in the horizontal direction is approximately concave, thereby forming side support portions 44a and 44b. A seat belt 46 is attached to the bottom of the recessed portion 42. The seat belt 46 includes a wear belt 46b connected by a buckle 46a, and two shoulder belts 46C connected to the wear belt 46b.

Next, the operation of this embodiment will be explained. In normal use, when the seat is not used as a child's seat, the seat back 12 is fixed to the rear of the seat cushion 10, as shown in FIG. That is, the link member 22 is stopped by the stopper member 28, and the seat back 12 is fixed with the fixing pin 34 fitted into the fixing hole 32.

In this state, as shown in FIG. 5, the user can sit in exactly the same way as a normal vehicle seat.

On the other hand, when seating a child, the seat back 12 is moved as follows. That is, first, the knob 38 is pulled to disengage the fixing pin 34 from the fixing hole 32, and then the seat back 12 is pushed toward the front side of the seat cushion 10.

By doing this, the link member 20 and the link member 22 are rotated, and the seat/height 12 is rotated as shown in FIG.
moves to the front of the seat cushion 10. In this state, the link member 2O is stopped by the stopper member 26, and the fixing pin 34 fits into the fixing hole 30. In this state, the child is seated and restrained with the seat belt 46 as shown in FIG. The upper body of the seated child is supported by the upper body support formed by the recess 42 (the child's back is supported by the bottom of the recess 42, and lateral movements are supported by the lateral supports 44a and 44b). (regulated). Therefore, the child can sit in a stable state. Since there is sufficient space between the seated child and the rear seat passenger, the comfort of the child and the rear seat passenger is good, and the rear seat passenger and the child are safe in the event of a collision, sudden braking, etc. There is no contact and it is highly safe. A seated child can lean his or her back backwards and place his or her feet on the seat cushion 10, and the vibrations of the vehicle are also absorbed by the seat cushion 10, so the child can enjoy a comfortable ride similar to that of a regular seat. Obtainable. Furthermore, since the seated child is within the driver's field of view, the child can be easily monitored. Note that even when a child is not seated, if the seat is set in the state shown in FIG. 3, the occupant seated in the rear seat can stretch out his or her legs and use the seat cushion 10 as a leg rest. Furthermore, in the case of a two-door vehicle, it is possible to improve the ease of getting in and out of the rear seats.

(Second Embodiment) A second embodiment of the present invention is shown in FIGS. 7 to 9. This second embodiment differs from the first embodiment shown in FIGS. 2 to 6 only in the structure of the seat belt 46' and the fixing position of the seat back 12, so other parts than the differences will be explained in the following. The same reference numerals as those in the first embodiment are used, and the description thereof will be omitted. Seat belt 46' is a bell) 46. b'' and 460' ends are fixed to the upper back of the seat back 12, and the belt 4
The other ends of 6b' and 46C' are connected to an anchor 48 attached to the rear side of the seat cushion 10 by a buckle 46a'. By doing this, ff',8
As shown in the figure, when the seat is set for a child, the child's groin and shoulders can be restrained by the belts 46b' and 460'. FIG. 9 shows a state in which a child is seated. Note that in this embodiment, the seat back 12
The fixing position is such that when the seat cushion 10 is moved for children, the fixed position is near the center of the seat cushion 10. This allows the child to bend his or her legs when seated. It is clear that the same functions and effects as in the above-mentioned t51 embodiment can be obtained in this second embodiment as well.

(Third Embodiment) FIG. 10 shows a third embodiment of the present invention. This third embodiment is different from the second embodiment shown in FIGS.
The only difference is 6″″.

In other words, the lap belt 50 can be accessed by an anchor provided in the seah, and this lap belt 50 can be
Bells 1-46b and 46c are connected to each other. It is clear that this embodiment also provides the same functions and effects as those of the first and second embodiments 11) described above.

(f) As described in detail, the vehicle seat according to the present invention includes a seat cushion, a seat pack, and a seat pack movable support mechanism that movably supports the seat back in the front and rear directions with respect to the seat cushion. and a locking mechanism (in the illustrated embodiment, the locking mechanism is constituted by a fixing pin 34 and a fixing hole 30. It is also possible to have three or more fixing holes so that the stopping position can be adjusted according to the size of the child's body.) and a generally concave horizontal section provided on the back of the seat back. It has an upper body support part that supports the back and sides of the child's body, and a seat belt provided on the back side of the seat back. When used as a child seat, it is possible to securely restrain the child in the seat in a stable state, ensuring safety as well as comfort and comfort. Moreover, it is possible to obtain the effect that the driver can keep the child within his/her field of vision at all times.

[Brief explanation of the drawing]

Fig. 1 is a diagram showing a conventional vehicle seat, Fig. 2 is a perspective view showing a vehicle seat according to the first embodiment of the present invention, and Fig. 31Δ shows the vehicle seat shown in Fig. 2 used for children. FIG. 4 is a sectional view taken along line IV-1V in FIG. 2, FIG. 5 is a diagram showing an adult seated on the vehicle seat shown in FIG. 2, and FIG. FIG. 2 is a diagram showing the vehicle seat in use with a child seated on it, FIG. 7 is a diagram showing the vehicle seat according to the second embodiment of the present invention, and FIG. 8 is a diagram showing the vehicle seat shown in FIG. 7. FIG. 9 is a diagram showing a child seated on the vehicle seat shown in FIG. 8. FIG. 10 is a vehicle seat according to a third embodiment of the present invention. FIG. DESCRIPTION OF SYMBOLS 10... Seat cushion, 12... Miserable seat back, 14... Movable support mechanism, 16... Slide member,
18... Reclining mechanism, 20 φ link member, 2211... link member, 24... fist guide rail, 2
611... Stopper member, 28... Stopper member, 3
0...Fixing hole, 32...Fixing hole, 34...Fixing pin, 36Φ・ya bracket, 38・φφ knob, 4
0...War spring, 42.Φ.Concave part, 46...Seat belt. Patent Applicant Nissan Motor Co., Ltd. Agent Patent Attorney Toshiyuki Miyauchi Figure 1 Figure 3 Figure 4 Figure 8 Figure 6 Figure 7 Figure 2 Figure 8 and Figure 9 Figure 10 figure

Claims (1)

[Scope of Claims] 1. A seat cushion, a seat back, a seat back movable support mechanism that movably supports the seat back in the front and back direction with respect to the seat cushion, and a seat back movable support mechanism that supports the seat back movably in the front and back direction with respect to the seat cushion; a locking mechanism that can be fixed to the seat cushion at a certain position; an upper body support section that supports the back and sides of a child's body; and a seat back. A seat belt provided on the back side of the
A vehicle seat with 2. The vehicle seat according to claim 1, wherein the seat belt is fixed to the upper back surface of the seat pack and the rear side of the seat cushion.