JPH0233528B2 - JIDOSHANOSHIITOSOCHI - Google Patents

Description

Detailed Description of the Invention (Industrial Application Field) The present invention provides a reclining mechanism that adjusts the inclination angle of a seat back with respect to a seat bottom, and a slide mechanism that allows the seat bottom to slide between a front end position and a rear end position. The present invention relates to a seat device for an automobile equipped with a vehicle, particularly a seat device suitable for a van-type vehicle.

(Prior Art) Seat devices for van-type vehicles and the like equipped with the above reclining mechanism and sliding mechanism are well known (see, for example, Japanese Utility Model Publication No. 14578/1983).

For van-type vehicles, there is a legal regulation that the cargo space must be larger than the passenger compartment, and the passenger compartment and cargo space are separated by a partition such as a partition bar. .

By the way, when using a car seat with a reclining mechanism and a sliding mechanism as the rear seat in a six-seater van type car, etc., the rear seat must be slid backwards in order to avoid leaving enough space in the passenger compartment. If the seat back is tilted significantly backwards in this state, the cargo space will be infringed upon, causing the problem of not being able to comply with the above-mentioned laws and regulations. Further, even if an automobile seat equipped with the above two mechanisms is adopted, there is no point in adopting it if the backward tilting is restricted.

In view of this problem, the applicant has filed a patent application filed in
In the patent application related to No. 136941, it is stated that ``The lower bracket attached to the seat bottom is rotatably supported by an engaging piece that can be freely engaged and detached from the operating lever of the reclining mechanism, and this engaging piece and the seat sliding mechanism are connected to each other. The attached lock lever is connected by a connecting member, and this lock lever can be freely engaged with and detached from the operation stick of the seat slide mechanism, and when the seat back is tilted backward beyond a set angle, the lock lever prevents the seat from sliding backwards. has already proposed an automobile seat characterized in that the seat is disabled by engagement with the control stick.

By the way, in the above-mentioned proposed seat device, there is a problem that if a reclining operation is performed while the seat is being moved, the seat will be reclined and the seat can be moved directly to the rear end position, and there is room for improvement.

(Object of the Invention) The object of the present invention is to further improve the above-mentioned proposed seat device so that during the movement of the seat in the longitudinal direction,
It is an object of the present invention to provide a seat device for an automobile having a structure capable of inhibiting a reclining operation, that is, a backward tilting of the seat back by more than a predetermined angle.

(Structure of the Invention) In order to achieve the above object, the present invention includes a reclining mechanism that adjusts the inclination angle of the seat back with respect to the seat bottom, and a slide mechanism that allows the seat bottom to slide between the front end position and the rear end position. A seat device for an automobile, wherein a locking member for positioning a seat bottom at a front end position and a rear end position is rotatably attached to a rail member constituting the slide mechanism, and the lock member is rotatably attached to the rail member. The attached connecting member has one end connected to the lock member by a connecting member, and the release plate rotatably attached to the base plate of the reclining mechanism has one end connected to the other end of the connecting member. The other end of the release plate is provided with a locking part that can be freely engaged with and detached from the reclining operation lever, and the one end of the linking member is provided with a locking part that is attached to the vehicle body when the seat bottom is positioned at the rear end position. A lever portion is provided which is connected to a stopper member that is attached to the seat, and is also connected to an engaging member that can be freely engaged and detached from the lock member when the seat back is tilted rearward, so that the seat bottom is unlocked. When the reclining operation lever is engaged with the locking portion in a state where the reclining operation lever is engaged with the seat back or the seat bottom is positioned at the rear end position, the seat back is prevented from tilting backward by more than a predetermined angle, and the seat back is prevented from tilting backward by more than a predetermined angle. There is provided a seat device for an automobile, characterized in that the seat bottom is prevented from sliding rearward by the engagement between the engaging member and the locking member when the seat is tilted.

In this configuration, when the seat bottom is unlocked or positioned at the rear end position, the engagement between the locking portion and the reclining operation lever prevents the seat back from tilting backward by a predetermined angle or more. thwarted. In addition, when the seat back is tilted back beyond a predetermined angle,
The engagement between the engaging member and the locking member prevents the seat bottom from sliding rearward.

(Effects of the Invention) Therefore, according to the present invention, when the seat slide mechanism is unlocked or the seat is positioned at the rear end position, the seat back is prohibited from tilting backward by more than a predetermined angle. On the other hand,
When the seat back is tilted backward by a predetermined angle or more, the seat bottom is prohibited from sliding rearward.

Therefore, according to the present invention, the seat back can be tilted backward by a predetermined angle or more only when the seat is at the front end position, and the possibility of erroneously performing a full reclining operation can be reliably prevented.

(Example) Examples of the present invention will be specifically described below.

Van-type vehicle 1 shown diagrammatically in FIGS. 1 and 2
In the figure, 2 is a front seat, and 3 is a rear seat. The front seat 2 and the rear seat 3 are provided with reclining mechanisms 4 and 5, respectively, as shown in the figure, so that they can be reclined. The rear seat 3 is provided with a slide mechanism 6 that can be moved between a front end position A indicated by a solid line in FIG. 1 and a rear end position B indicated by a phantom line in FIG.

In the van type vehicle 1, as described above, there is a legal regulation that the distance A between the front seat 2 and the rear seat 3 must be shorter than the distance C in the front-rear direction of the luggage space B. Therefore, as shown in FIG. 2, the rear seat 3 can be fully reclined only at the front end position A, so that the above-mentioned legal regulations are satisfied even in this state.

FIG. 3 shows an overall perspective view of a seat device to be incorporated into the rear seat 3 to satisfy such requirements.

As shown in FIG. 3, the seat device basically includes the reclining mechanism 5, the sliding mechanism 6, and a linking mechanism 7 that links the reclining mechanism 5 and the sliding mechanism 6.

The reclining mechanism 5 is configured such that when the reclining operating lever 8 is lifted in the direction indicated by arrow U in FIG. The upper bracket 11 is fixed to the seat bag (see Fig. 1, 3B) at the center.
This is a conventionally known structure in which the upper bracket 11 is locked in the reclined position when the operating lever 8 is released after reclining the seat back to a desired inclination angle. has.

The slide mechanism 6 also includes a pair of left and right upper rails 1 fixed to the bottom surface of the seat bottom 3A.
2 and 12' are slidably guided in the longitudinal direction by a pair of left and right lower rails 13 and 13' fixed to the vehicle body. The stopper brackets 14, 14' fixed to the vehicle body together with the lower rails 13, 13' have a plurality of locking holes 15, 15, 16, corresponding to the front end position A and the rear end position B of the rear seat 3, respectively. , 16,... are provided,
A pair of left and right locking members 17, 17' having claws (not specifically shown) that engage with these locking holes 15, 15, . . . and 16, 16, . I'm trying to make it possible.

The slide operation lever 18 is attached to a support bracket 19 fixed to the left upper rail 12.
The left locking member 17 is rotatably supported inside the stopper bracket 14 by a pin 20 passing through the shaft of the slide operating lever 18 at the central opening of the support bracket 19. It is designed to be linked to the rotation of the In addition, the right lock member 17' is
It is fixed at the central opening of the support bracket 19' to a pivot rod 21 which is rotatably supported by a support bracket 19' fixed to the right upper rail 12'. This rotating rod 21
Ear members 22 and 22' for wire locking are fixed to the slide operating lever 18 at the same position in the axial direction by welding or the like, and the upper part of the ear member 22 of the slide operating lever 18 and the ear of the rotating rod 21 A first linking wire 23 is stretched between the lower parts of the member 22', and when the slide operating lever 18 is operated in the unlocking direction shown by arrow R against the spring force of the wire spring 24, the rotating rod 21 is moved. is rotated in the direction of arrow S, thus both locking members 17, 17'
are now unlocked at the same time.

Next, the linkage mechanism 7 provided between the slide mechanism 6 and the reclining mechanism 5 will be explained.

This linkage mechanism 7 is constructed around a linkage lever 26 as a linkage member that is rotatably supported in a horizontal plane by a hinge pin 25 on a support bracket 19 fixed on an upper rail 12 as a rail member according to the present invention. and link lever 2
6's first lever part 26a and the right lock member 1
7', the second linking wire 27 is suspended, while
A second lever portion 26b extending outward across the upper rail 12 in the width direction is connected to one end 29a of the release plate 29 by a linking rod 28 extending in the direction of the reclining mechanism 5. The release plate 29 is hinge-supported at its center by a hinge pin 30 on the base plate 9 of the reclining mechanism 5 so as to be rotatable in a vertical plane, and the other end 29b of the release plate 29 is
is formed as a reclining detection part 32 curved in an arc so as to engage a lock pin 31 protruding from a rear extension end 8a extending rearward from the hinge point of the reclining operation lever 8, and a reclining detection part 32 is formed at the base of the detection part 32. is provided with a locking portion 33 that abuts the lock pin 31 from below and prohibits the operation of the reclining operating lever 8 under the conditions described below.

Also, as clearly shown in FIGS. 4 and 5, the hinge pin 25 of the link lever 26
Further inside, there are third and fourth lever portions 26c, 2 that protrude toward the central opening of the support bracket 19.
6d, and is adapted to be linked to a slide lock member 34 which has a U-shape when viewed from above. The slide lock member 34 is pivotally supported by the shaft portion of the slide operation lever 18 between both axial side walls 17a and 17b of the lock member 17 so as to be axially displaceable, and is supported by a rear side wall of the lock member 17 in the axial direction. It is urged forward in the axial direction by a coil spring 35 compressed between the coil spring 17b and the coil spring 35. The slide lock member 34 is
It has a lock pawl 36 extending rearward above the coil spring 35, and as shown in FIG.
When engaged with the notch 17c provided in b, the slide operating lever 18 is locked via the locking member 17 so that even if an attempt is made to operate the slide operating lever 18, the slide operating lever 18 cannot be operated.

In FIGS. 3 and 4, numeral 37 is a coil spring that urges the linking lever 26 around the hinge pin 25 in the counterclockwise direction in the figure, and 38 is a coil spring that is attached to the second lever portion 26b of the linking lever 26 and the linking rod 28. This is a coil spring wound between the stopper 39 and the attached stopper 39.

Next, the operation of the above configuration will be explained.

In the state shown in FIG. 3, the seat back 3B is not reclined and the seat bottom 3A is in the state shown in FIG.
shows a hypothetical state between the front end position A and the rear end position B.

Now, when the slide operation lever 18 is operated in the R direction in the figure in the above state, the rotation rod 21 is rotated in the direction of the arrow S by the first linking wire 23.
An interlocking lever 26, which is interlocked with the locking member 17' via a second interlocking wire 27, is rotated around the hinge pin 25 in the direction of the hour hand in the figure. Therefore, the linking rod 28 is attached to the second lever portion 26b of the linking lever 26.
The release plate 29 is rotated counterclockwise (in the direction of arrow D) around the hinge pin 30.

As a result, the locking portion 33 provided on the release plate 29 is located on the rotation locus of the lock pin 31 of the reclining operating lever 8, so that even if an attempt is made to operate the reclining operating lever 8,
Since the lock pin 31 is abutted by the locking portion 33, it becomes inoperable. That is, the reclining operation is prohibited while the rear seat 3 is moving in the longitudinal direction.

Further, when the rear seat 3 is slid to the rear end position, the slide lock member 34 engages with the stepped portion 14a provided at the upper part of the rear end side locking holes 16, 16, . . . of the stopper bracket 14. The slide lock member 34 is pushed forward in the axial direction, and the link lever 2
Link lever 26 via third lever part 26c of 6
is rotated around the hour hand of the hinge pin 25. As a result, even if the slide operating lever 18 is released and the seat back 3A is locked in the rear end position, the release plate 29 will not rotate as the locking portion 33 of the locking pin 31 of the reclining operating lever 8, as during the sliding operation. Positioned on the trajectory, the reclining control lever 8 is rendered inoperable.

On the other hand, when the seat bag 3A is slid to the front end position A and the slide operating lever 18 is returned to lock the seat bag 3A to the front end position A by the locking members 17 and 17', the link lever 26 is moved through the second link wire 27. is hinge pin 25
Coil spring 3 around the counterclockwise hand.
It rotates with the spring force of 7, and via the linking rod 28,
The release plate 29 is rotated around the hinge pin 30 in the direction of the hour hand. As a result, the locking portion 33 of the release plate 29 escapes from the rotation locus of the lock pin 31 of the reclining operating lever 8, and the reclining operating lever 8 can therefore be operated.
can be reclined to any desired angle (including full recline). And when you actually recline seat back 3B,
As the upper bracket 11 rotates, the reclining operation lever 8 also rotates, and the lock pin 31 pushes the detection part 32 of the release plate 29 backward, and as a result, the release plate 29 rotates around the hinge pin 30 around the hour hand. Rotate it. The release plate 29 is interlocked via a linkage rod 28, and the linkage lever 26 is connected to a coil spring 36,
37, it is rotated counterclockwise around the hinge pin 30, and during this rotation, the slide lock member 34 is displaced axially rearward by the third lever portion 26c against the spring force of the coil spring 35. , the lock pawl 36 is engaged with the notch 17c of the lock member 17. Therefore, even if an attempt is made to operate the slide operating lever 18, the locking member 17 communicating with the slide operating lever 18 is unrotatably locked by the lock pawl 36, and therefore cannot be operated. That is, even if the seat back 3B is at the front end position A, the sliding operation to the rear end position B is prohibited if the seat back 3B is reclined. Then, when the seat back 3B is returned from the reclined position to the normal position (forward tilted position) at the front end position A, the lock pin 31 of the reclining operation lever 8 is returned to its original position following the forward rotation of the upper bracket 11. Therefore, there is no force to hold the release plate 29 in a state where it is rotated in the direction of the hour hand, and the slide lock member 34 is displaced axially forward by the spring force of the coil spring 35, and the notch 17c of the lock member 17 is moved forward. The lock pawl 36 is pulled out, the lock member 17 is unlocked, and the slide operation lever 18 can be operated for the first time.

As mentioned above, if the structure is as in this example,
A reclining operation can be performed only when the rear seat 3 is at the front end position A, and furthermore, a rearward sliding operation cannot be performed unless the reclining is released at the front end position A. In other words, while the rear seat 3 is moving or in the rear end position B, the reclining operation is prohibited at any time, and conversely, when the rear seat 3 is being reclined in the front end position A, the rear seat 3 cannot be slid rearward. will eventually be banned.

In the above embodiments, the present invention was applied to the rear seat of a van-type vehicle, but the present invention is not limited to this, and is applicable to vehicles where there is a passenger compartment, not just a luggage compartment, behind the seat (for example, In this case, sufficient cabin space can be secured behind the seats, and passenger comfort can be improved. Further, in the above embodiment, the link lever 26 is linked to the lock member 17' on the rotating rod 21 side, but the present invention is not limited to this.
7, 17' may be used.

[Brief explanation of drawings]

FIG. 1 and FIG. 2 are side explanatory views showing an embodiment in which the present invention is applied to a rear seat of a van-type vehicle, and FIG.
The figure is an overall perspective view of the seat device according to the above embodiment, and FIGS. 4 and 5 are a plan view and a side view, respectively, showing the main parts of the linkage mechanism of the above embodiment. 3...Rear seat, 3A...Seat bottom, 3
B... Seat back, 5... Reclining mechanism, 6... Slide mechanism, 7... Interlocking mechanism, 8...
... Reclining operation lever, 9 ... Base plate, 11 ... Upper bracket, 12,1
2'...Upper rail, 17, 17'...Lock member, 18...Slide operating lever, 26...Linking lever, 27...Second linking wire, 28...Linking rod, 29...Release plate, 33... …
Locking portion, 34... Slide lock member, 36...
Locking nails.

Claims (1)

[Scope of Claims] 1. An automobile seat device comprising a reclining mechanism that adjusts the inclination angle of the seat back with respect to the seat bottom, and a slide mechanism that allows the seat bottom to slide between a front end position and a rear end position, A lock member for positioning the seat bottom at the front end position and the rear end position is rotatably attached to the rail member constituting the slide mechanism, and the linking member rotatably attached to the rail member is at one end. is connected to the lock member by a connecting member, and a release plate rotatably attached to the base plate of the reclining mechanism has one end connected to the other end of the connecting member, and the other end of the release plate has a reclining member. The operating lever is provided with a locking portion that can be freely engaged and detached, and one end of the linking member is linked to a stopper member provided on the vehicle body when the seat bottom is positioned at the rear end position. In addition, when the seat back is tilted rearward, the lock member is provided with a lever portion that is linked to a detachable engagement member, so that the seat bottom is unlocked or the seat bottom is moved to the rear end. When the reclining control lever is engaged with the locking portion in the position, the seatback is prevented from tilting backward by a predetermined angle or more, and when the seatback is tilted backward by a predetermined angle or more, the engagement member and the lock are engaged. A seat device for an automobile, characterized in that a seat bottom is prevented from sliding rearward by engagement with a member.