JPS60131335A - Vehicle seat - Google Patents

Abstract

PURPOSE:To use a vehicle seat for a child without the normal function of the seat being detracted, by using a head rest as a seat cushion for a child. CONSTITUTION:The seat back 12 of a seat is supported slidably back and forth by means of a movable support mechanism 14, and are secured at two positions by means a lock mechanism consiting of a knob 38, fixing holes 30, 32, etc. The rear part of the seat back 12 is formed therein with a recessed part 42 so that side support parts 44a, 44b are formed. A head rest 12 which may be also used as a seat for a child, has side support parts 52a, 52b and a leg part 52c and may be secured to the top of the seat back 12 and as well onto a seat cushion 10.

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. wS1 of Japanese Utility Model Application No. 58-87631. Seat back that makes up the seat
A seat plate 2 is rotatably attached to the back side (rear side surface in the longitudinal direction of the vehicle), and this seat plate 2 and seat back l
The crotch support member 3, belt 4, and side support member 5 can be removed between the two. 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, in such a conventional vehicle seat, the seat plate 2 is supported on 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 it and the rear passengers, making it cramped, and there is no place to put children's feet, making it less stable.Furthermore, the seatbelt is slanted 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 vibration of the vehicle body is directly transmitted to the seat plate 2 via the seat back 1, resulting in poor riding comfort. Furthermore, since the child was seated on the back side of the seat back l, the driver was unable to monitor the child's condition. In addition, since all of the child's weight will act on the seatback l via the seat 1 and the seat plate 2, it is necessary to make the strength of the joint between the seat 1 and the seat plate 2 and the seat back l itself sufficiently large. Ta.

(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 movable support mechanism for movably supporting the seat back in the front and back direction with respect to the seat cushion, and a movable support mechanism for supporting the seat back so as to be movable in the front and rear directions with respect to the seat cushion. an upper body 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 including a locking mechanism, and a generally concave horizontal section provided on the back of the seat back; A support part, a headrest/child seat combination member that can be fixed to any position on the two parts of the seat back and the seat cushion, and serves as a head rest in the former position and a child seat cushion in the latter position. have.

(e) Examples Examples of the present invention will now be described with reference to FIGS. 2 to 13 of the accompanying drawings.

(First Embodiment) A first embodiment of the present invention is shown in FIGS. 2 to 4. This vehicle seat has a seat cushion 1o and a seat back 12, both of which are connected by a seat back movable support mechanism 14. The seat back movable support mechanism 14 is
A slide member 16 connected to the seat cushion 10 and a reclining mechanism 1 connected to the seat back 12
It is composed of link members 2o and 22 that connect the 8 fixed arms 18a. Link members 2o and 2
2 is rotatably connected at both ends to the slide member 16 and the fixed arm 18a by pins. The slide member 16 is supported so as to be movable in the horizontal direction by a guide rule 24 fixed to the vehicle floor. Thereby, the seat cushion 10 can be moved to a predetermined position in the longitudinal direction. Reclining mechanism 18
has a fixed arm l8a 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. The 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. Side surface 10a of seat cushion 10
are provided with two stopper members 26 and 28 and two fixing holes 30 and 32. Stopper member 28
can restrict the rotation of the link member 22 and stop it in the state shown in FIG. 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. The fixing pin 34 and the aforementioned fixing hole 30.32 constitute a locking mechanism. As shown in FIG. 4, the fixing bin 34 is supported by a bracket 36 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. The link member 22 is the stopper member 2
In the state shown in FIG. 2 in which the fixing pin 34 is stopped by the fixing hole 32, the fixing pin 34 is positioned at a position corresponding to the fixing hole 32. Further, in the state 7+jZi 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 30, respectively, in the state shown in FIGS. 2 and 3. By doing so, the fixed arm 18a (and the seat back 12 connected thereto) can be reliably fixed to the seat cushion 10. A concave portion 42 is provided on the back surface of the seat back 12 so that the cross section in the horizontal direction is approximately concave, thereby forming lateral support portions 44a and 44b. A seat belt 46 is attached to the bottom of the recessed portion 42. The seat belt 46 is composed of an eye bell (46b) connected by a buckle 46a, and two shoulder bells (46c) connected to a clothing belt 46b. seat back 1
A lever 48 is rotatably attached to the side of 2 by a pin 5O. A member 52 that serves as a helmet rest and a child seat is fixed to the seat 8-48. The lever 48 has two members 48a and 48 telescopically connected to each other.
The members 48a and 48b are always subjected to a force in the direction of contraction by a spring (not shown). The member 48b has a crank-shaped bent portion that can engage with the upper groove 54 of the seat back 12 or the lower groove 56 on the back side of the seat back 12. Headrest/child seat combination member 5
2 are side support parts 52a and 52b.

and a leg portion 52c.

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 1O, as shown in FIG. That is, the link member 22 is stopped by the stopper member 28, and the seat pack 12 is fixed with the fixing pin 34 fitting into the fixing hole 32.

Further, the headrest/child seat 1/component member 52 is fixed to the upper position of the seat back 12. In this state, the seat can be seated in exactly the same way as a normal vehicle seat. In addition, the headrest/child seat combination member 5
2 functions as a helmet rest, and the side support parts 52a and 52b can support the occupant's head in the lateral direction.

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 release the engagement of the fixing pin 34 with the fixing hole 32, and then the seat back 12 is pushed toward the front side of the Sea I cushion 10. By doing this, the link members 20 and 22 rotate, and the seat cushion 12 moves to the front of the seat cushion 10, as shown in FIG. In this state, the link member 20 is stopped by the stopper member 26, and the fixing pin 34 fits into the fixing hole 30. Further, the headrest/child seat combination member 52 is moved to a position above the seat cushion 10 by extending the lever 48 to release the engagement with the groove 54 and rotating the lever 48 using the pin 50 as a fulcrum. let In this state, the child is seated on the headrest/child seat combination member 52 and restrained by the seat belt 46. In this case, the headrest member 52 that also serves as a child's seat functions as a child's seat cushion. The upper body of a seated child is supported by the upper body support formed by the recess 42 (the back of the child is supported by the upper body support formed by the recess 42).
2, and its lateral movement is regulated by the lateral support parts 44a and 44b), and the child's waist is supported by the lateral support parts 52a and 52b of the Herarest/child seat combination member 52. Supported laterally.

Note that the leg portions 52c of the headrest/child seat member 52 function to appropriately incline the headrest/child seat member 52. Therefore, the child can sit in a stable state. Since there is sufficient space between the seated child and the rear seat occupant, the child and the rear seat occupant have good comfort, and safety is also high in the event of a collision, sudden braking, etc. A seated child can lean his back backwards and place his 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 a seated child is within the driver's field of view, the child can be easily monitored. The child's viewpoint is raised by the headrest Φ child seat member 52, so the child can see outside the vehicle through the window. 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. In the state shown in FIG.
Since the headrest/child seat combination member 52 is not installed above the vehicle, the driver's field of view is not obstructed (for example, the door mirror cannot be seen). In the above embodiment, the locking mechanism was constructed by the fixing hole 3O132 provided on the side surface 10a of the seat cushion 10 and the fixing pin 34, but the fixing pin was provided on the stationary part side and the fixing hole was provided on the link member side. Alternatively, the side surface of the link member may be restrained by a fixing pin.

(Second Embodiment) FIGS. 5 and 6 show a second embodiment of the present invention. This second embodiment is different from the first embodiment shown in FIGS. 2 to 4 only in the method of fixing the Heradrest/child seat combination member 152, so other parts than the first embodiment are different from the first embodiment shown in FIGS. The same reference numerals as in the embodiments are given, and the explanation is omitted. The headrest/child seat member 152 is connected to the side of the seat back 112 by an extendable lever 148, and is connected to the side of the seat back 112 through a hole 112a provided in the upper part of the seat back 112.
And 112b is a headrest-child seat combination member 1
It is fixed by fitting a support member (not shown) integral with 52. Therefore, the lever 148 is not provided with a bent portion, and the seat back 112 is not provided with a groove. In this second embodiment, the above-mentioned first
It is clear that the same actions and effects as in the example can be obtained.

(Embodiment 3) A third embodiment of the present invention is shown in FIGS. 7 to 9. This third embodiment is different from the first embodiment shown in FIGS. 2 to 4 in the method of fixing the member 252 that serves as both a helmet rest and a child seat. The headrest/child seat combination member 252 is f
As shown in Figures ir and g, it is of a type in which a net 252d is stretched, and has side support parts 252a, 252b, and leg parts 252c, and support members 252e and 252f that are fixed together. have. Support member 25
2e and 252f have grooves 252e' and 252f'
is provided. At the top of the seat back 212, the support member 2 of the headrest/child seat member 252 is installed.
Holes 212a and 212b are provided in which holes 52e and 252f can be fitted. Also, sea-ri size Jj shi≠
12' are provided with holes 212c and 212d at the bottom of the back surface in which support members 252e and 252f of the headrest/child seat member 252 can be fitted, and knobs 60a and 60 are provided in the depths of these holes 212c and 212d.
A ratchet mechanism is provided that can release the engaged state with b (note that the ratchet mechanism may be provided in only one of the holes). When the seat is used as an adult seat, the support members 252e and 252f of the Heradrest/child seat combination member 252 are inserted into the holes 212a and 212b of the seat back 212 and fixed. When used as a child seat, the headrest/child seat member 252 is fixed onto the seat cushion 10 using the holes 212c and 212d of the seat back 212. In this state, unless the knobs 60a and 60b are operated, the grooves 252e' and 252f' and the ratchet mechanism prevent the member 252 from coming off. It is clear that this embodiment also provides the same effects as those of the first and second embodiments described above. Also, in this example,
There is no arm required in the previous embodiments, thereby reducing space requirements and cost. Furthermore, the headrest/child seat combination member 252 has a net
252d, the thickness is thin, and the lateral support parts 252a, 25 that support the child's knees.
2b can be made larger, improving lateral support performance.

(Fourth example) A fourth embodiment of the present invention is shown in FIGS. 10 and 11.

This fourth embodiment is different from the third embodiment shown in FIGS. 7 to 9 in the shape of the headrest/child seat member 352. However, the method of attaching the headrest/child seat member 352 to the seat back 212 is the same as in the third embodiment. The member 352 that also serves as a child's seat (Heradress)-child seat is of a type in which a net) 352d is stretched, and the side support portions 352a, 352b and the leg portions 35
2c, and the hole 21 of the sea) back 212.
It has a support member (not shown) for fitting into holes 2a and 212b or holes 212c and 212d.

Furthermore, this headrest Φ child seat member 352
has a protective portion 352g. The protection part 352g has a predetermined gap between it and the net 352d, and the 11th
As shown in the figure, when the seat is set as a child seat, the child's feet will be located within this gap. Therefore, when the child is seated, the front part of the child's upper body is restrained by the protective portion 352g, and the child can be protected in the event of a collision, sudden braking, or the like. In the embodiment shown in FIGS. 10 and 11, a seat belt is not provided, but a seat belt may be provided on the back of the seat back 212. In this embodiment, the headrest/child seat combination member 352 (3) When using it as a headrest and when using it as a child seat.
Since the surface of 52d used is different, there is no discomfort when using it as a headrest. Further, when used as a headrest, the protective portion 352g can be used as a handrail when a rear seat passenger gets on and off.

(Fifth example) A fifth embodiment of the present invention is shown in FIGS. 12 and 13.

In this fifth embodiment, the headrest 9 and the child seat member 452 are connected to the holes 212a and 212 of the seat pack 212.
b, or the holes 212c and 212d. However, a seat belt 446 whose ends are fixed to the headrest/child seat combination member 452 and the back surface of the seat back 12, respectively, is provided.

As shown in FIG. 13, when used as a child seat, the child's groin and shoulders can be restrained. This embodiment also provides the same effects as those of the previous embodiment. Furthermore, the child can be securely secured by the seat belt 446.

(f) As described above in detail, the vehicle seat according to the present invention includes a seat cushion, a seat back, and a seat back movable support mechanism that movably supports the seat back in the front and rear directions with respect to the seat cushion. , a locking mechanism capable of fixing the seat back to the seat cushion at at least two positions including the rear portion of the seat cushion (in the described embodiment, the locking mechanism is constituted by a fixing pin 34 and fixing holes 30, 32); It is also possible to adjust the stopping position according to the size of the child's body by using three or more fixing holes. It is composed of an upper body support part that supports the back and sides of the child's body, and can be fixed to any position on the upper part of the seat back or on the seat cushion, and in the former position it is a heladrest and in the latter position it is a Heradres that can be used as a seat cushion for children)
It has a member that also serves as a child's seat, so when used as an adult seat, it provides exactly the same seating comfort as a regular seat, and when used as a child's seat, it provides a seat for children. To securely restrain a child in a seat in a stable state, to provide safety, good riding comfort and comfort, and to have the effect that a driver can always keep the child within his or her field of vision and monitor it.

[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. 3 is a diagram showing a vehicle seat shown in Fig. 2 for children. FIG. 4 is a sectional view taken along line IV-IV in FIG. 2, FIG. 5 is a view showing a vehicle seat according to a second embodiment of the present invention, and FIG. 5 is a diagram showing a case where the vehicle seat shown in FIG. 7 is set for a child, FIG. 7 is a diagram showing a vehicle seat according to a third embodiment of the present invention, and FIG. FIG. 9 is a diagram showing a member that can be used as both a helmet rest and a child seat. FIG. 10 is a diagram showing a vehicle seat according to the fourth embodiment of the present invention. FIG. 11 is the first
FIG. 12 is a diagram showing the vehicle seat according to the fifth embodiment of the present invention, and FIG. 13 is the vehicle seat shown in FIG. 12. FIG. 3 is a diagram showing a case where the game is set for children. 10...Fist seat cushion, 12,112°212.
・Fist seat back, 14・e・Movable support mechanism, 16-・
07941 member, 1811・φ reclining mechanism, 2
0・Φ-link member, 22...link member, 24-・
・Guide rail, 26... Stopper member, 28... Stopper member, 30... Fixing hole, 32... Fixing hole, 34... Fist fixing rule bottle, 36... Φ bracket, 38
...knob, 40 ... spring, 42 ... recessed part, 46 ... seat belt, 52,152゜252.3
52,452＠・Component that doubles as headrest and child seat. Patent Applicant Nissan Motor Co., Ltd. Agent Patent Attorney Toshiyuki Miyauchi Figure 1 Figure 2vA Figure 3 M2 Figure 4 Figure 5 Figure 6 Figure 7 Figure 8 Figure 9 Figure 10 Figure 11 Figure 12

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 vehicular seat comprising a headrest/child seat combination member that can be fixed to any position on the upper part or on the seat cushion, and serves as a headrest in the former position and as a child seat cushion in the latter position. 2. The vehicle seat according to claim 1, wherein the headrest/child seat combination member is connected to a lever that rotates around the side of the seat back as a fulcrum. 3. The headrest/child seat combination member is fixed to the upper part of the seat back or the seat cushion by inserting the supporting member fixed to the member into the hole in the upper part of the seat back or the hole in the lower part of the seat back. 1
Or the vehicle seat described in paragraph 2.