JP3196000B2 - Space up sheet with slide mechanism - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a space-up seat with a slide mechanism which is mainly used as a third seat of a vehicle such as a wagon type or a van type.

[0002]

2. Description of the Related Art Conventionally, as this kind of space-up seat with a slide mechanism, there is, for example, a Japanese Utility Model Laid-Open No. 1-73434.
There is a sheet published in the publication. As shown in FIG. 19, for example, this conventional seat is provided with a slide rail 3e and a hinge mechanism 2e on one side of a seat cushion 1e. The other side of the seat cushion 1e is connected to a bracket plate 4e having a fixing means at a lower end of a plurality of lock strikers 7 (lock bars) attached to the vehicle body floor 6e.

According to such a seat structure, the seat cushion 1e can be fixed by connecting the bracket plate 4e to any one of the plurality of lock strikers 7. When such a fixed state is released, the seat cushion 1e can be moved and adjusted along the front-rear direction. Further, when the seat cushion 1e is not used, the seat can be rotated about the hinge mechanism 2e in the direction of arrow B and flipped up, thereby increasing the space in the vehicle and making it easier to load luggage. I can do it.

[0004]

However, in the above-mentioned conventional seat structure, it is necessary to provide a plurality of lock strikers 7 on the vehicle body floor 6e at predetermined intervals. Therefore, since the number of mounting the lock strikers 7 is large, the cost of parts and the like is increased, and the manufacturing cost of the vehicle body is increased. This is not preferable for a vehicle that requires a flat space for the vehicle body floor 6e because of a large mounting space, and there is room for improvement in these points.

Further, it is generally necessary to consider the mounting of this type of lock striker 7 in advance from the stage of designing the vehicle body. Generally, however, one lock striker 7 corresponds to one seat. 7 are merely provided. Therefore, when a vehicle is not manufactured with a view to providing a plurality of lock strikers 7 from the beginning in the production of the vehicle, it is necessary to additionally attach the lock striker 7. The additional work may cause a decrease in the production efficiency of the vehicle and may be difficult in terms of securing space. As a result, the above-mentioned conventional seat structure cannot be flexibly applied to various types of vehicles, which also has a drawback.

The present invention has been conceived in view of such circumstances, and does not require any special specifications such as providing a plurality of lock strikers on the vehicle body floor, and allows the front and rear directions of the seat cushion to be adjusted. It is an object of the present invention to make it possible to appropriately perform a slide movement adjustment and a flipping operation with a simple structure.

[0007]

Means for Solving the Problems To solve the above problems, the present invention takes the following technical means.

That is, according to the first aspect of the present invention, a slide rail for slidingly guiding the seat cushion in the front-rear direction is provided on one side of the seat cushion, and the other side of the seat cushion is flipped up. A space-up seat with a slide mechanism provided with a hinge mechanism that allows the seat cushion to rotate freely so that the latch can be freely connected to and released from a lock striker mounted on the vehicle body floor. Means,
A link mechanism having at least one arm that swings in the front-rear direction in conjunction with the sliding operation when the seat cushion slides in the front-rear direction with the latch means connected to the lock striker; Is connected to the other side of the seat cushion, and the link mechanism prevents the arm from swinging in the front-rear direction so that the seat cushion can be positioned and fixed in the front-rear direction. A lock mechanism for locking the arm at at least two or more predetermined swing angle positions.

According to a second aspect of the present invention, in the space-up seat with the slide mechanism according to the first aspect, the other side of the seat cushion is provided for supporting the other side of the seat cushion. The leg is rotatably provided so as to be able to be folded along the back surface of the seat cushion, and the upper end of the arm of the link mechanism is connected to the leg, and At the lower end of the arm, the latch means is connected or integrally provided. When the seat cushion moves in the front-rear direction in a state where the latch means is connected to the lock striker, the arm is locked. It is characterized in that it is configured to swing back and forth around the striker.

According to a third aspect of the present invention, in the space-up seat with a slide mechanism according to the first aspect, each of the lower ends of the link mechanism is connected to a lower link having the latch means. When the lower link is fixed on the vehicle body floor by connecting the latch means to a lock striker, the other arms of the seat cushion are connected to the plurality of arms. The seat cushion is connected in parallel to at least two front and rear portions of the other side of the seat cushion so as to be supported by the arm of the seat cushion, and each of the arms can be folded along the back side of the seat cushion. It is characterized by being rotatable with respect to.

According to a fourth aspect of the present invention, in the space-up seat with the slide mechanism according to the first aspect, the lock mechanism is formed at least at two or more locations on an outer peripheral surface of an upper end portion of the arm of the link mechanism. A plurality of recessed portions, a locking member for preventing the arm from swinging by fitting claws into the plurality of concave portions, and a claw of the locking member is constantly pressed toward an outer peripheral surface of an upper end portion of the arm. An elastic member for urging, and a lock stopper connected to the locking member, wherein the lock stopper has a claw of the locking member which is provided with any one of the arms against the elastic force of the elastic member. When the lock stopper is detached from the concave portion, the lock stopper is supported by the arm, and a protrusion is provided to fit into the concave portion of the arm so as to maintain the detached state of the pawl of the locking tool. ,the above When the upper end of the arm is rotated in a state of being fitted into any one of the recesses of the arm, the arm is detached from the recess of the arm to release the support of the lock stopper by the arm. Features.

According to a fifth aspect of the present invention, in the space-up seat with the slide mechanism according to the first aspect, the lower portion of the arm of the link mechanism is connected to the latch means via a shaft. In this manner, a swing operation is performed about the shaft body, and the seat is provided on the upper portion of the latch means via another shaft body supported by a bracket attached to the arm. When the belt connector is connected to the arm, and when a predetermined or more predetermined tensile force acts on the seat belt connector, the bracket rotates the latch means relative to the arm about a lock striker. Is formed so as to be deformed by the above-mentioned tensile force so as to perform the following.

[0013]

According to the first aspect of the present invention, the link mechanism connected to the other side of the seat cushion can be connected to the lock striker on the vehicle body floor via the latch means. In this state, when the arm of the link mechanism is not locked by the lock mechanism, the arm of the link mechanism only swings back and forth with the sliding movement of the seat cushion in the back and forth direction. The seat cushion can be appropriately moved in the front-rear direction without hindering the operation. In contrast, the arm of the link mechanism is locked by a lock mechanism,
If the swing operation of the arm is prevented, the seat cushion, which is interlocked with the arm, is also prevented from sliding in the front-rear direction, so that the seat cushion can be fixed.

As described above, if a predetermined link mechanism provided on the other side of the seat cushion is fixed to the lock striker, it is possible to fix and slide the other side of the seat cushion. Unlike this, it is not necessary to attach a plurality of lock strikers to the vehicle body floor, but only to attach one lock striker to one seat cushion to the vehicle body floor. Therefore, the manufacturing cost can be reduced by reducing the number of lock strikers to be mounted, the uneven space for mounting the lock striker formed on the vehicle body floor can be reduced, and at least one lock striker can be used for each seat cushion. If the vehicle body is mounted in such a manner, a special effect is obtained in that the space-up seat can be flexibly mounted and used for various types of vehicles.

Also, if the connection between the lock striker and the latch means is released, the vertical movement of the other side of the seat cushion will not be restricted by the link mechanism. By rotating around a hinge mechanism provided on one side, the other side of the seat cushion can be flipped up and folded. Therefore, there is no problem that the flip-up operation of the seat cushion is hindered.

According to the second aspect of the present invention, when the seat is used, the load on the other side of the seat cushion can be supported by the legs, so that a large load is prevented from acting on the link mechanism. The seat can be stabilized. Further, a latch means is connected to or integrally provided with the lower end side of the arm constituting the link mechanism so that the arm swings around the lock striker when the seat cushion slides. In addition, for example, as a means for fixing the link mechanism, there is no need to use an extra member separately, and the configuration of the link mechanism can be extremely simplified. Therefore, an excellent effect that the entire link mechanism attached to the seat cushion can be manufactured small and lightweight, and the usability thereof can be improved.

Further, since the upper end side of the arm of the link mechanism is connected to a leg provided so as to be foldable along the back side of the seat cushion, the seat cushion is flipped up after the seat cushion is flipped up. When the leg is folded, the link mechanism connected to the leg can be folded along with the leg along the rear surface of the seat cushion. Therefore, it is possible to appropriately avoid bulkiness of the link mechanism when space is increased, and to obtain an advantage that the link mechanism can be easily folded.

According to the third aspect of the present invention, when the latch means is connected to the lock striker and the lower link of the link mechanism is fixed on the vehicle body floor, the plurality of parallel arms constitute a parallel link. Thus, these arms support at least two front and rear portions of the seat cushion. That is, unlike the case of the invention described in claim 2, the load of the seat cushion can be appropriately supported by the arm of the link mechanism without providing a leg on the other side of the seat cushion. Therefore, it is not necessary to attach the legs to the seat cushion, and the effect of simplifying the configuration of the entire seat can be obtained.

Further, since the upper end of each arm of the link mechanism is rotatable with respect to the other side of the seat cushion, and can be folded toward the back side of the seat cushion,
When the seat cushion is flipped up to increase the space, by folding the link mechanism toward the back side of the seat cushion, there is also obtained an advantage that the link mechanism can be prevented from becoming bulky.

According to the fourth aspect of the present invention, the arm of the link mechanism is swung by fitting the claw of the locking tool into one of a plurality of recesses formed on the outer peripheral surface of the upper end of the arm. Can be prevented, and the seat cushion can be positioned and fixed. When performing this operation, first, when the claw of the locking tool is disengaged from any of the recesses of the arm against the elastic force of the elastic member, the protrusion of the lock stopper connected to the locking tool is formed. Fits into the concave portion of the arm, whereby the lock stopper is supported by the arm, and the claw of the locking member is kept in a state of being separated from the concave portion of the arm. That is, even if the operator releases his / her hand from the locking tool, the locking tool no longer re-inserts into the recess of the arm due to the elastic force of the elastic member at this point, and maintains the released state. It will be. Then, when the arm is swung from such a state and the upper end thereof is rotated, the protrusion of the lock stopper is detached from the recess of the arm, and the support of the lock stopper by the arm is released. In this state, the claw of the locking member can be pushed toward the outer peripheral surface of the upper end portion of the arm by the elastic force of the elastic member, and thereafter, the claw of the locking member can be fitted into another concave portion of the arm. It becomes possible.

According to such a series of operations, when the position of the seat cushion is changed in the front-back direction,
There is no need for the operator to constantly touch the locking device,
It is not necessary to touch the locking tool after the operation of releasing the claw of the locking tool fitted into any one of the recesses of the arm from the recess. Therefore, the effect of facilitating the operation of changing the position of the seat cushion in the front-rear direction is obtained.

According to the fifth aspect of the present invention, since the seat belt connecting device is connected to the upper portion of the latch means via the shaft supported by the bracket attached to the arm, the shape of the bracket is improved. By taking into account the dimensions and dimensions, the advantage that the belt anchor of the seatbelt (corresponding to the shaft body to which the seatbelt connecting device is connected) can be arranged in a desired area convenient for wearing the seal belt. can get.

On the other hand, when a vehicle collision accident or the like occurs and the weight of the seatbelt wearer suddenly moves forward, and a certain or more tensile force acts on the seatbelt connector, the bracket is deformed. Then, the latch means connected to the seat belt connector rotates relative to the arm about the lock striker. That is, when a strong bending moment force acts on the latch means from the seat belt, the bending moment can be appropriately canceled by the rotation operation of the latch means, and the bending moment is applied to the arm of the link mechanism. It is possible to prevent direct action. Therefore, it is not necessary to manufacture the lock mechanism of the arm more rigidly than necessary so as to cope with a large bending moment force, and the effect that the lock mechanism of the arm can be manufactured lightweight and compact can be obtained.

[0024]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described below.
This will be specifically described with reference to the drawings.

FIG. 1 is a perspective view showing an example of a space-up sheet S with a slide mechanism according to the present invention.

The space-up seat S is provided with a hinge mechanism 2 on one side 1a on the outer side of the seat cushion 1.
The slide rail 3 is connected via the 2. On the other hand, a leg 4 is provided at the other end 1b on the in side of the seat cushion 1, and a link mechanism including an interlock 51 corresponding to a latch means for the arm 50 and the lock striker 7 is provided. 5 are provided. A seat back 10 is provided at the rear of the seat cushion 1. The upright angle of the seatback 10 can be arbitrarily adjusted by operating a reclining mechanism (not shown). For example, the seatback 10 can be tilted backward until it is flat with the seat cushion 1.

The slide rail 3 includes a lower rail 30
The upper rail 31 and the upper rail 31 are fitted to each other, and these are slidable with each other.
Both front and rear ends of the lower rail 30 are fixed to the upper surface of the wheel house 60 of the vehicle, for example, via stoppers 32.

Each of the hinge mechanisms 2 is attached to a bracket 23 mounted on the upper surface of the upper rail 31.
The seat cushion 1 is configured by pivotally connecting a projecting support 12 provided on one side 1 a of the seat cushion 1 via a pin 13. The support 12 is fixed to a seat cushion frame 11 incorporated in the seat cushion 1. The seat cushion 1 is slidable in the front-rear direction of the arrow a by being connected to the slide rail 3 via the hinge mechanisms 2 and 2, and the arrow is centered on the pin 13 of each hinge mechanism 2. It is rotatable in the direction b, and can flip up the other end 1b side of the seat cushion 1 as shown in FIG.

The slide rail 3 is provided with means (not shown) for fixing the upper rail 31 to the lower rail 30 so that the positioning and fixing in the front-rear direction on one side 1a of the seat cushion 1 can be achieved. Have been. As an example of the fixing means, for example, a hole is provided in an appropriate place of the lower rail 30 in advance, and when fixing the seat cushion 1, a pin or the like attached to the upper rail 31 is inserted and locked in the hole. Means may be adopted.

The leg 4 is made of, for example, a bent metal pipe or the like. The upper ends of two front and rear portions thereof are pinned to metal fittings 14 and 14 fixed to the seat cushion frame 11. 13a so as to be freely rotatable. That is, the leg 4 is rotatable around the pin 13a in the direction of the arrow c, and is foldable along the back surface of the seat cushion 1. As shown in FIG. 1, when the leg 4 is set upright as shown in FIG. 1, a holding mechanism (not shown) for preventing the leg 4 from inadvertently turning inward. (Not shown), and when the leg 4 is folded along the rear surface of the seat cushion 1 as shown in FIG. 2, the elastic force of a spring (not shown) is maintained so that the folded state is maintained. Preferably, it is configured to work. A cushion member 40 made of rubber or the like is appropriately attached to the lower end of the leg 4.

In the link mechanism 5, an interlock 51 formed separately from the arm 50 is connected to a side surface of a lower end portion of the arm 50 by bolting. However, the present invention is not limited to this, and latch means having the same function as the interlock 51 according to the present embodiment may be integrally provided at the lower end of the arm 50.

The interlock 51 can be freely attached to and detached from the lock striker 7 attached to the vehicle body floor 6. Specifically, for example, as shown in FIG. 3, a latch claw 54 for engaging and holding the lock striker 7 on an interlock body 53 having a concave groove 52 for fitting the lock striker 7 formed at the lower end portion. Is attached. The latch claw 54 is normally resiliently urged by a spring 59 in a direction (arrow d direction) for opening the concave groove 52, and the lock striker 7 is fitted into the concave groove 52 and When pressed in the direction of arrow e, it is rotated and locked in the direction of arrow e, and
The lock striker 7 is engaged and held in the inside 2. Further, the engaged state of the lock striker 7 is configured to be appropriately released by operating the lever 55. However, the specific configuration of the lock striker 7 is not limited to this. Further, a seat belt connector 90 for connecting the seat belt 9 is attached to the interlock 51.

The upper end of the arm 50 of the link mechanism 5 is provided with a pin 13 on a plate-shaped portion 41 provided on the rear side of the leg 4.
It is rotatably connected via d. A lock mechanism 8 is provided at the upper end of the arm 50. The lock mechanism 8 includes concave portions 80a and 80b formed on the outer peripheral surface of the upper end of the arm 50, and a locking member 82 having a claw 81 for locking the concave portions 80a and 80b. I have. The locking member 82 always has its claw 81 by the elastic force of a spring 83 as an elastic member.
Are biased in a direction of contacting the outer peripheral surface of the upper end portion of the arm 50, and the claw 81 is locked in one of the concave portions 80a, 80b, so that the arm 5
Locked so that 0 relative rotation is not possible. This locked state can be released by operating the lever 84 of the locking member 82 in the direction of arrow f.

Next, an example of use and operation of the space-up sheet S with a slide mechanism having the above-described structure will be described.

First, when using the space-up sheet S, the interlock 51 is connected to the lock striker 7 as shown in FIGS. Also,
By setting the leg 4 to be vertical and keeping the lower part thereof in contact with the vehicle body floor 6, the load of the seat S and the load of a seated person can be appropriately supported by the leg 4.

Further, as shown in FIG. 3, if the claw 81 of the locking member 82 is locked in, for example, one of the concave portions 80a and 80b on the outer peripheral surface of the upper end portion of the arm 50, Since the relative rotation of the arm 50 with respect to 4 is prevented, the arm 50 does not swing in the front-rear direction. Therefore, in this state, the space-up sheet S does not move in the front-rear direction, and the positioning and fixing thereof can be achieved. In addition, the fixing of the space-up sheet S can be achieved by fixing the slide rail 3, but only by fixing the slide rail 3,
The other side 1b of the seat cushion 1 rattles. Therefore, by the locking of the arm 50, the rattling on the other side 1b of the seat cushion 1 can be eliminated, and the sitting comfort of the occupant can be improved.

Next, when the space-up sheet S is used, there is a case where the user wants to move the sheet S forward, for example, when loading luggage behind the sheet S. In such a case, at the same time when the fixing of the slide rail 3 is released, the lever 84 of the locking member 82 is operated in the direction of arrow f to release the locked state of the claw 81 with the concave portion 80a of the arm 50. . This allows the arm 50 to swing freely, so that the space-up sheet S can be advanced by pushing the space-up sheet S from the rear to the front as shown in, for example, FIG.

When the space-up sheet S advances, the arm 50 swings around the lock striker 7, and the upper end of the arm 50 moves along an arc-shaped locus.
Therefore, when the space-up seat S moves forward, the other side 1b side of the seat cushion 1 is slightly lifted up.
Since it is absorbed by the hinge mechanism 2 provided on the side a, there is no problem in actual use.

As shown by the solid line in FIG. 4, when the space-up sheet S is advanced by a predetermined distance, the concave portions 80a, 80b on the outer peripheral surface of the upper end portion thereof with the swinging operation of the arm 50.
Is changed, and one concave portion 80b comes to a position where it engages with the locking member 82. Therefore, the space-up sheet S
Can be automatically locked in the concave portion 80b by the locking member 82 elastically urged by the spring 83. When this locking is performed, the swing operation of the arm 50 is no longer regulated, and the space-up sheet S
Can be appropriately fixed to a position ahead of the position shown in FIG. Further, when the space-up seat S is to be retracted, the seat cushion 1 may be pushed rearward after the locking member 82 is separated from the concave portion 80b in the same manner as described above. This allows
The seat cushion 1 can be returned to the position shown in FIG.

As described above, depending on whether or not the swing operation of the arm 50 of the link mechanism 5 that swings around the lock striker 7 is fixed, the positioning and fixing of the space-up sheet S and the movement in the front-rear direction are performed. Since the structure can be arbitrarily performed, it is not necessary to provide a plurality of lock strikers 7 on the vehicle body floor 6, and one lock striker 7 is sufficient. Further, since the link mechanism 5 is substantially composed only of the lock mechanism 8 having the locking member 82 and the arm 50 having the interlock 51 at one end, the link mechanism 5 is It can be made very compact and its handling can be good.

In FIG. 3, the lock striker 7
Since one end of the seatbelt 9 is attached to the interlock 51 directly connected to the seatbelt, the attachment strength of the seatbelt 9 can be increased, and safety can be ensured.

On the other hand, when the space-up seat S is not used, after removing the interlock 51 from the lock striker 7, the other side 1b of the seat cushion 1 is removed.
Can be lifted upward. Thereby, as shown in FIG. 2, the other end 1b can be flipped up around the hinge mechanism 2 at one end 1a of the seat cushion 1, and the seat cushion 1 can be folded. In this case, the seat back 10 may be flat with respect to the seat cushion 1 as shown in FIG.
The seat cushion 1 may be folded along the surface thereof.

After the seat cushion 1 is folded as described above, when the leg 4 is rotated and folded along the back surface of the seat cushion 1, the arm 50 of the link mechanism 5 attached to the leg 4 is folded. It is also possible to follow the back of the seat cushion 1 accordingly. Therefore, when the space is increased, it is possible to appropriately solve the problem that the link mechanism 5 is bulky in an unsightly state.

FIG. 5 is a perspective view of a space-up sheet Sa with a slide mechanism according to a second embodiment of the present invention (the same parts as in the first embodiment shown in FIGS. 1 to 4 are denoted by the same reference numerals). The same applies hereinafter.)

The space-up seat Sa has a point that a slide rail 3 is provided on one side 1a of the seat cushion 1A via hinge mechanisms 2 and 2.
Although the configuration is the same as that of the space-up seat S shown in FIGS. 1 to 4, the configuration of the link mechanism 5A connected to the other end 1b of the seat cushion 1A is different from that of the link according to the first embodiment. It is different from the mechanism 5.

That is, the link mechanism 5A includes lower links 56, 2 having an interlock 51 at one end detachably attached to the lock striker 7 attached to the vehicle body floor 6.
Arms 50a, 50a and the lower link 56
Is provided with an upper link 57 parallel to.
The stoppers 58, 58 provided at the front and rear two places on the upper surface of the upper link 57 of the link mechanism 5 are metal fittings 14 attached to the lower surface of the seat cushion frame 11a.
b and 14b are connected using pins 13b.
Thus, the link mechanism 5A is rotatable around the pin 13b in the direction of the arrow c1 and can be folded along the back surface of the seat cushion 1A.

The lower link 56 has an interlock 51
Can be fixed on the vehicle body floor 6 by being connected to the lock striker 7. As a specific example, an angle member having an L-shaped cross section can be used. As the interlock 51 connected to one end of the lower link 56, one having the same structure as the interlock 51 shown in the first embodiment can be applied. Is appropriately attached.

The two arms 50a, 50a
As shown in FIG.
And the lower link 56 are rotatably connected to each other.
The two arms 50a are set so as to be parallel to each other, thereby forming a parallel link mechanism. That is, when the arms 50a and 50b swing about the shafts 15 at the lower ends in the front-rear direction of the arrow f, the upper link 57 and the seat cushion 1A connected to the upper link 57 are moved to the arrow a1. It moves along the front-back direction.

The upper link 57 is provided with a lock mechanism 8A for preventing the two arms 50a, 50a from swinging. The lock mechanism 8A only needs to be provided corresponding to at least one of the two arms 50a, 50a, and its basic configuration employs the same mechanism as the lock mechanism 8 described in the first embodiment. It is possible to In this embodiment, one arm 5 on the rear side is used.
By fitting the tip of a shaft 82A movably provided in the horizontal direction into one of the recesses 80a, 80b formed on the outer peripheral surface of the upper end of the arm 50a, the arm 50a can move relative to the upper link 57. It has a structure that can prevent rotation. The shaft 82A is normally urged by a spring 83a in a direction (arrow h direction) in which it is fitted into one of the recesses 80a and 80b.
By operating a lever 84A attached to the shaft 82A
Is moved in the direction opposite to the arrow h, the locked state of the arm 50a can be released.

In the space-up seat Sa having the above structure, the rear arm 50 by the lock mechanism 8A is used.
a after releasing the locked state of the seat cushion 1A.
Is pushed forward or backward, and the two arms 50a, 50a
By swinging the seat cushion 1A in the front-rear direction, the seat cushion 1A can be moved back and forth. After the positioning of the seat cushion 1A, the lock mechanism 8A
When the shaft body 82A is fitted into one of the concave portions 80a and 80b of the arm 50a, the space-up sheet Sa can be fixed.

In such a fixed state of the space-up seat Sa, the two arms 50a, 50a support the load acting on the other end 1b of the seat cushion 1A. Therefore, unlike the case of the first embodiment, there is no need to separately provide the legs 4 on the seat cushion 1A.

When the space-up seat Sa is not used, as shown in FIG. 7, the seat cushion 1A can be flipped up and folded around the hinge mechanisms 2 and 2, but in this case, the link mechanism is used. 5A
Can be turned around the pin 13b to be folded along the back surface of the seat cushion 1A. Therefore, it is possible to prevent the link mechanism 5A from becoming bulky in the vehicle.

FIG. 8 is a perspective view showing another embodiment of the lock mechanism of the space-up seat with a slide mechanism according to the present invention. The lock mechanism 8B has the same basic configuration as the lock mechanism 8 described with reference to FIG.
a locking tool 8 having a claw 81 for locking to a and 80b
2. It has a spring 83 for urging the claw 81 of the locking member 82 in a direction of contacting the outer peripheral surface of the upper end portion of the arm 50. A lock stopper 85 is connected to the locking member 82. In this point, the configuration is different from that of the lock mechanism 8 shown in FIG.

One end of the lock stopper 85 is fixed to the locking member 82 using the screw body 16 or the like, and a projection 85a is provided on the back surface of the other end. The protrusion 85a is provided by, for example, forming a part of the lock stopper 85 into a triangular mountain fold as shown in FIG. This lock stopper 85
Is formed entirely or partially from a material having high flexibility, and is configured to perform the following operation.

That is, first, as shown in FIG. 8, when the claw 81 of the locking member 82 is fitted in the concave portion 80a of the arm 50, as shown in FIG. The arm 50 is in contact with the outer surface. At this time, the lock stopper 85 is slightly bent. Further, in the lock mechanism 8B, when the lever 84 of the locking member 82 is pressed downward against the elastic force of the spring 83 and the claw 81 is disengaged from the concave portion 80a, it is connected to the locking member 82. The projected portion 85a of the lock stopper 85 is shown in FIGS. 11 (a) and 11 (b).
As shown in FIG. Therefore, in this state, the protrusion 85a abuts on the outer peripheral surface of the arm 50 where the concave portion 80a is formed, and one end of the lock stopper 85 is supported by the arm 50. Is released, the locking member 82 is no longer held by the elastic force of the spring 83.
It does not fit inside. The locked state of the arm 50 remains released.

Next, in the state where the arm 50 is unlocked as described above, when the seat cushion 1 slides back and forth and the upper end of the arm 50 rotates,
As shown in FIG. 12, the projection 8 of the lock stopper 85
5a is detached from the concave portion 80a of the arm 50. This detachment is forcibly and automatically performed when the triangular mountain-shaped projection 85a contacts the side wall 80A of the concave portion 80a of the arm 50 in the state shown in FIG.
Further, when the projection 85a is detached from the recess 80a in this manner, the support of the lock stopper 85 by the arm 50 is released, and the claw 81 of the locking member 82 approaches the outer peripheral surface of the arm 50 by the elastic force of the spring 83. And abut. Therefore, when the arm 50 is still rotated, as shown in FIG. 13, the claw 81 automatically fits into the other concave portion 80b, thereby preventing the arm 50 from swinging, and the entire link mechanism. Is locked.

According to the lock mechanism 8B that performs the above-described operation, the arm 50 is pressed once by pressing the locking member 82 once.
Is released, and this state is maintained. Then, the arm 50 can be locked again only by sliding the seat cushion 1 along the front-rear direction. In addition, such a lock operation and a release operation are performed in the opposite manner from the one concave portion 80b to the other concave portion 8b.
The same applies to the case where the lock position is changed to 0a. In the lock mechanism 8 of the first embodiment described with reference to FIG. 4, it is not possible to keep the state in which the claw 81 is detached from the concave portion 80a by simply pressing the locking member 82 once, In the initial stage of changing the position of the cushion 1, it is necessary to press the seat cushion 1 with the other hand while pressing the locking member 82 with one hand. On the other hand, in the lock mechanism 8B, such a necessity is not required, and an advantage that the position changing operation of the seat cushion 1 is further facilitated is obtained.

FIG. 14 is a perspective view of an essential part showing an example in which the seat belt 9 is attached to the space-up seat with a slide mechanism according to the present invention. FIG. 15 shows the X4-X
16 is an exploded perspective view thereof.

In this embodiment, an interlock 51A for connection to the lock striker 7 is connected to a lower portion of the arm 50, and a bracket 91 having a U-shape is attached to the arm 50. The seatbelt connector 90 is connected to the interlock 51A by bolts 17a and nuts 17b as shafts held by the bracket 91 separately. Arm 50 and interlock 51A
Is connected to the interlock 51A as shown in FIG.
The screw shaft 19 as a shaft protruding from one side of the arm 5
This is done by being inserted into the hole 19a of the “0”. The bracket 91 has at least a front wall portion 91a of the front and rear side wall surfaces 91a and 91b.
When a force equal to or more than a certain value in the direction of arrow a2 acts on a, deformation is performed in the direction of the force. This can be set in consideration of the material, thickness, shape, and the like of the bracket 91. However, the bracket 91 is, of course, provided with such a strength that it is not easily deformed during normal use of the seat belt 9. I have.

In the above structure, since the arm 50 is connected to the lock striker 7, the arm 50 can be swung in the front-rear direction around the lock striker 7 when the position of the seat cushion 1 in the front-rear direction is adjusted. Needless to say, since the position of the bolt 17a serving as a fulcrum of the seat belt 9 can be determined by the shape of the bracket 91, the set angle of the seat belt 9 and the like can be set in an optimal state for the user. It is.

Next, when the seat belt 9 is used, if a collision accident or the like occurs and a very large tensile force F is generated in the seat belt 9, the bracket 91 is deformed. This deformation is caused by the center of the lock striker 7 and the bolt 1
The direction connecting the center of 7a does not always coincide with the direction of the tensile force F, which is caused by the rotation moment acting on the interlock 51A. Therefore, as shown in FIG. 17, the interlock 51A rotates in the direction of the arrow a3 with the deformation of the bracket 91, and the centers of the lock striker 7 and the bolt 17a are located on the line of action of the tensile force F. .

As a result, the tensile force F of the seat belt 9
Acts directly on the lock striker 7 through the interlock 51A, and excellent durability is obtained. Further, if the interlock 51 </ b> A rotates due to the deformation of the bracket 91 as described above, no strong rotational moment acts on the arm 50. Accordingly, it is possible to appropriately prevent an overload from acting on the lock mechanism 8 for preventing the swing of the arm 50.

FIG. 18 is an explanatory diagram for easily understanding the advantages of the above-described structure. That is, the structure shown in FIG. 18 is equivalent to the structure of the first embodiment shown in FIGS. 1 to 4, and the seat belt pulling force F is applied to the shaft 17c connecting the interlock 51 and the arm 50. Is a structure that acts. In such a structure, when the tensile force F of the seat belt acts, the rotational moment force M of F × α (α is the offset amount of the shaft 17c with respect to the lock striker 7) is obtained.
a acts directly on the arm 50. Therefore, in this case, the arm 50 is moved by the moment force Ma.
It is necessary to make the lock mechanism 8 robust so that does not swing. In order to solve this problem, the offset amount α may be set to zero. However, it is necessary to determine the arrangement of the shaft body 17c in consideration of the ease of use of the seat belt and the like. It cannot be placed in a position where α can be made zero. In particular, when the seat cushion 1 can be moved and adjusted in the front-rear direction, the offset amount α cannot be reduced to zero when the seat cushion 1 moves forward, even if the offset amount α can be reduced to zero when the seat cushion 1 retreats.

On the other hand, in the structure described with reference to FIGS. 14 to 16, the shaft (bolt) 17a for supporting the seat belt connector 90 is arranged in the range indicated by the angle θ in FIG. However, since a very large rotational moment force caused by the pulling force F is not generated in the arm 50, it is not necessary to increase the strength of the lock mechanism 8 of the arm 50 so much. Therefore, there is an advantage that the lock mechanism 8 can be made lightweight and compact.

In each of the above embodiments, the link mechanism 5 (corresponding to claim 2) using the arm 50 that swings around the lock striker 7 and the lock striker 7
Mechanism 5A in which a parallel link is constituted by a plurality of arms 50a attached to a lower link 56 fixed to the
Although the case where (corresponding to claim 3) is used has been described as a specific example, the specific configuration of the link mechanism in the present invention according to claim 1 is not limited thereto. Further, the swinging operation of the arm of the link mechanism is only required to be locked at at least two or more positions, and it is of course possible to lock at three or more positions.

In addition, the specific structure of each part of the space-up seat with a slide mechanism according to the present invention is variously changed in design.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an example of a space-up sheet with a slide function according to the present invention.

FIG. 2 is a perspective view showing a state where the space-up sheet with a slide function shown in FIG. 1 is folded.

FIG. 3 is a side view of the space-up seat with a slide function shown in FIG. 1;

FIG. 4 is a side view showing a state where the space-up sheet with a slide function shown in FIG. 1 is moved.

FIG. 5 is a perspective view showing another example of the space-up sheet with a slide function according to the present invention.

FIG. 6 is a side view of the space-up seat with a slide function shown in FIG. 5;

FIG. 7 is a perspective view showing a state in which the space-up sheet with a slide function shown in FIG. 5 is folded.

FIG. 8 is a perspective view of a main part showing another example of the lock mechanism of the present invention.

FIG. 9 is a rear perspective view showing an example of a lock stopper included in the lock mechanism shown in FIG. 8;

FIG. 10 is a sectional view of a main part taken along line X1-X1 of FIG. 8;

11A is a front view of a main part showing an example of the operation of the lock mechanism shown in FIG. 8, FIG. 11B is a cross-sectional view of the main part taken along line X2-X2 of FIG. Sectional view of the X3-X3 line of FIG.

FIG. 12 is a front view of an essential part showing an operation state of the lock mechanism shown in FIG. 8;

13 is an essential part front view showing an operation state of the lock mechanism shown in FIG. 8;

FIG. 14 is an essential part perspective view showing an example of a case where a seat belt is attached to a space-up seat with a sliding function according to the present invention;

FIG. 15 is a sectional view taken along line X4-X4 of FIG. 14;

FIG. 16 is an exploded perspective view of FIG. 14;

17 is an essential part perspective view showing an example of an operation state of the structure shown in FIG. 14;

FIG. 18 is an explanatory diagram showing an example when a tensile force acts on a seat belt.

FIG. 19 is a perspective view showing an example of a conventional space-up sheet with a slide function.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1, 1A Seat cushion 1a One side (of seat cushion) 1b The other end (of seat cushion) 2 Hinge mechanism 3 Slide rail 4 Leg 5, 5A Link mechanism 6 Body floor 7 Lock striker 8, 8A, 8B Lock mechanism 9 Seat belt 17a Shaft (bolt) 19 Other shaft (screw shaft) 50, 50a Arm 51, 51A Interlock (latch means) 56 Lower link 57 Upper link 80a, 80b Recess 81 Claw 82 Locking member 83 Elastic member (Spring) 85 Lock stopper 85a Projection 90 Seat belt connector 91 Bracket

──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Kiyoyoshi Matsubayashi 1 Toyota Town, Toyota City, Aichi Prefecture Toyota Motor Corporation (72) Inventor Tatsuya Saito 1 Toyota Town, Toyota City, Aichi Prefecture Toyota Motor Corporation (56) References JP-U 1-73434 (JP, U) (58) Fields surveyed (Int. Cl. ⁷ , DB name) B60N 2/30

Claims (5)

(57) [Claims] 1. A slide rail on one side of a seat cushion for slidingly guiding the seat cushion in the front-rear direction, and rotating the seat cushion so that the other side of the seat cushion can be flipped up. A space-up seat with a slide mechanism provided with a free hinge mechanism, a latch means capable of being connected to and released from a lock striker mounted on a vehicle body floor, and the latch means being connected to the lock striker. When the seat cushion slides in the front-rear direction in a state where the seat cushion is moved, at least one rocking operation in the front-rear direction interlocked with the sliding operation
A link mechanism having the above arm is connected to the other side of the seat cushion, and the link mechanism includes a link mechanism that prevents the arm from swinging in the front-rear direction. A space-up seat with a slide mechanism, comprising a lock mechanism for locking the arm at at least two or more predetermined swing angle positions so that positioning and fixing in the front-rear direction can be achieved. 2. A leg for supporting the other side of the seat cushion is rotatably provided on the other side of the seat cushion so that the leg can be folded along the back surface of the seat cushion. The upper end of the arm of the link mechanism is connected to the leg, and the lower end of the arm of the link mechanism is connected or integrally provided with the latch means. The arm is configured to swing back and forth around the lock striker when the seat cushion moves in the back and forth direction with the latch means connected to the lock striker. 2. The space-up seat with a slide mechanism according to 1. 3. The link mechanism has a plurality of arms each having a lower end connected to a lower link having the latch means, and the plurality of arms connect the latch means to a lock striker. When the lower link is fixed on the vehicle body floor, the other side of the seat cushion is connected in parallel to at least two front and rear portions of the other side of the seat cushion so as to be supported by the plurality of arms, The space with a slide mechanism according to claim 1, wherein each of the arms is rotatable with respect to the seat cushion so that the arms can be folded along the back side of the seat cushion. Up sheet. 4. The lock mechanism includes a plurality of recesses formed at least at two or more locations on an outer peripheral surface of an upper end portion of an arm of the link mechanism, and the arm swings by inserting claws into the plurality of recesses. And a lock stopper connected to the locking member, the elastic member constantly pressing and urging the claw of the locking member toward the outer peripheral surface of the upper end of the arm. The lock stopper is supported by the arm when the claw of the locking tool is disengaged from any of the concave portions of the arm against the elastic force of the elastic member, and the claw of the locking tool is A protrusion is provided to fit into the recess of the arm so as to maintain the detached state, and the upper end of the arm is rotated when the protrusion is fitted into any one of the recesses of the arm. Sometimes the above Characterized in that it is formed so as to leave from the recess of the arm so as to release the support of the lock stopper by beam, space-saving sheet having sliding mechanism according to claim 1. 5. The arm of the link mechanism is provided so that a lower portion thereof is connected to the latch means via a shaft to perform a swinging operation about the shaft. A seat belt connector is connected to an upper portion of the latch means via another shaft supported by a bracket attached to the arm, and the bracket is fixed to the seat belt connector by a predetermined constant. 2. The device according to claim 1, wherein said latch means is deformed by said tensile force so as to rotate around said lock striker relative to said arm when said tensile force is applied. Space-up seat with a slide mechanism according to 1.