JPH0219306Y2 - - Google Patents

Description

[Detailed description of the invention] <Industrial field of application> This invention relates to a trunk-through type rear seat mechanism for automobiles.

<Conventional technology> For example, this type of conventional rear seat mechanism was developed in 1983.
As disclosed in No. 69723, the backrest seat portion has a plurality of inverted parts, and by tilting each inverted part forward, the vehicle interior and the trunk room are communicated with each other.

Therefore, each of the above-mentioned inverted parts is provided with a locking device, which is designed to release the locking device when the inverted part is folded forward, and to fix the inverted part by the locking device when the inverted part is raised up. There is.

<Problems to be solved by the invention> In such a conventional seat mechanism, there are inconveniences such as having to operate the lock device for each inverted section when all the inverted sections are folded forward or erected at the same time. If you accidentally operate the locking device to the lock side while the inverted part is tilted forward, the locking device will not be able to fix the inverted part even if you raise the inverted part, so you will have to fold the inverted part forward again. There was also the inconvenience of having to reset the lock device to the unlocked state.

<Means for solving the problem> The seat mechanism of the present invention has a locking device fixedly installed above the backrest part, for example, in the headrest part, and this locking device has one operating means and a drive unit driven by the operating means. A movable member is provided, and a plurality of rockers are simultaneously interlocked by the displacement operation of the movable member. The inverted part is locked and fixed by being made to protrude downward by the movable member, and the inverted part is released by being pulled upward by a movable member. A springing means is provided for applying force so that even when the rocker is in a locked state, it can rise to a release position against the force of the springing means, and each of the above-mentioned inverted portions has a rotating top surface that includes: An engaging portion is provided for engaging the rocker when the rocker is in a locked state, and a guide means is provided at the lower end lock portion of the rocker, whereby the rocker is pressed against the rotating end of the inverted portion. The locker is configured to rise against the triggering means when the trigger is activated.

<Operation> Since the seat mechanism of the present invention is as described above, when the inverted part of the backrest seat part is raised and the locking device is operated to the lock side, all the rockers engage with the inverted part from above and all the lockers are locked at the same time. The inverted part can be fixed, and even if the locking device is set to the locked state before the inverted part is erected, the rocker will rise due to being pressed by the rotating end of the inverted part, so the rocker will not move. The rocker is moved backward until the engaging part on the side of the inverted part comes directly below, and when the engaging part and the rocker face each other, the locking part of the rocker is moved to the engaging part by the force of the springing means. It can be inserted.

<Example> The rear seat mechanism shown in FIG. 1 is composed of a seat seat part 10, an inverted backrest seat part 20, and a headrest part 30 as a supporting means provided above the backrest seat part. The back support seat portion 20 is configured to be able to stand upside down with its upper end serving as a rotation end.

This back support seat part 20 includes a central inverted part 22 in which an armrest 21 is rotatably provided, and left and right inverted parts 2 provided on both sides of this central inverted part 22, respectively.
3, 24, each inverted part 22, 23, 2
An engaging portion, for example, an engaging hole 2, is provided at the top of the rotation end of 4.
21, 231, and 241 are provided.

Further, each of the left and right inverted parts 23 and 24 has cutout grooves 233 in which clamping pieces 232 and 242 are provided as an example of a locking means for position regulation in close proximity to the outside of the back surface thereof, respectively.
243 is provided on the front surface of the central inverted portion 22, and a recessed portion opening at the top surface of the rotating end thereof, for example, a recessed stepped surface 22 formed on one side of the central inverted portion 22.
2 is provided.

On this recessed stepped surface 222, the lower surface of a key cylinder, which will be described later, is exposed to the vehicle interior when the central inverted portion 22 is raised, thereby making it possible to insert a duplicate key into the key cylinder.

The head rest part 30 is the back rest seat part 2.
It is formed into a frame shape using a frame 31 as a support for storing 0, and has a space closed by a back support sheet part 20 in the center, and pillow surfaces 32, 32 are provided in the upper part. .

A lock device A is installed inside the headrest 30.
is built in, and this locking device A is attached to the frame 31.
A housing 40 fixed to and fitted into the head rest part 30, a movable member housed in the housing 40, for example a slide plate 50 movable in the horizontal direction, and an operating means combined with the slide plate 50, for example. It includes a key cylinder mechanism 60 and a plurality of lock mechanisms 70 housed within the housing 40.

As shown in FIGS. 3 and 4, the housing 40 includes a base frame 4 fixed to the frame 31 with screws or the like.
1, a cover 42 attached to the front surface of the base frame 41, and as shown in FIG. The back support seat part 20 is held by engaging the locking pieces 43 and 44 to the fastening means 233 and 243 of the back support seat part 20.

The slide plate 50 is configured to be able to reciprocate in the horizontal direction within the housing 40,
For this reason, the horizontal position is maintained by guide means (not shown).

A plurality of diagonal holes 51 inclined in the same direction are formed in the plate surface of the slide plate 50, respectively.
They are arranged so as to correspond to each inverted section.

The key cylinder mechanism 60 is shown in FIGS.
As shown in FIG. 5, when the central inverted portion 22 of the back support seat portion 20 is erected, the key cylinder 61 has a keyhole exposed on the lower surface of the head rest portion 30 by the concave stepped surface 222 of the central inverted portion 22. The key cylinder 61 is connected to the slide plate 50 by a drive unit such as a drive piece 62, and a duplicate key 63 that can be attached to and detached from the key cylinder 61. In the embodiment, the duplicate key is connected to the key cylinder 6.
1 and manually operated, for example by rotating, the drive piece 62 of the key cylinder 61 is rotated, thereby moving the slide plate 50 in the horizontal direction.

As shown in FIG. 4, the locking mechanism 70 includes a case 71 that is fixed to the base frame 41 and has a space in the vertical direction, and is housed in the case 71 so as to be vertically slidable and extends forwardly. Engagement protrusion 72
1, and this protrusion 721 is attached to the slide plate 5.
Slide frame 72 thrust into engagement with oblique hole 51 of 0
A rocker 74 is housed in the slide frame 72 so as to be movable up and down, and is constantly urged downward by a springing means, for example, a coil spring 73, thereby causing the lower end lock portion 741 to protrude from the slide frame 72. and when the slide frame 72 is engaged above the diagonal hole 51, the rocker 74 moves to a position where the inverted portion of the back support seat portion 20 is released, as shown by the chain line in FIG. rise,
When the slide frame 72 is engaged with the lower part of the oblique hole 51, the rocker 74 is inserted into the engagement holes 221, 231, 2 of the inverted portion, as shown by the solid line in FIG.
41 are lowered to the respective locking positions, and when the rocker 74 is further lowered to the locking position,
The rocker 74 is set so that only the rocker 74 can rise to the release position by applying an external force against the coil spring 73 to the rocker 74.

Further, the lower end lock portion 741 of the rocker 74 is formed with a guide means, for example, an inclined surface 741a that is inclined in the backward direction toward the lower end so as to be in contact with the rotating end of the inverted portion that composes the back support seat portion 20. The rocker 74 is made to rise against the coil spring 73 when this inclined surface 741a is pressed by the inverted portion.

Further, a guide groove 742 is recessed in the outer surface of the rocker 74 along the axial direction, and a locking protrusion 722 provided on the slide frame 72 engages with this guide groove 742, whereby the slide frame 7
The length of the lock portion 741 protruding from the lock 74 is regulated, and the vertical sliding direction of the rocker 74 is regulated. Since the seat mechanism of the present invention is as described above, when the inverted parts 22, 23, 24 of the backrest seat part 20 are all or partially erected, and the key cylinder 61 is operated with the duplicate key 63, the slide plate 50 is moved horizontally. direction and lower the rocker 74 through the oblique hole 51, thereby fitting the lock portion 741 of the rocker 74 into the engagement holes 221, 231, 241 of the inverted portion.

Therefore, the locker 74 locks the inverted portion in the upright position, and when the duplicate key 63 is pulled out from the key cylinder 61, the locked state of the locker 74 is fixed.

In the rocker 74, when the inverted part in the forward folded state stands up, it contacts the rotating end and receives the rotational force of the inverted part, and this rotational force is transferred to the coil spring 7 of the rocker 74.
Since a guide means is provided to apply a force to the rocker 74 as a force resisting the movement of the rocker 74, when the inverted part is in the forward position, the locking device A is set to the locked state, that is, to the locking side as shown by the solid line in FIG. However, the inverted parts 22, 23, and 24 can be rotated to stand up and locked without changing this state.

In this case, the rocker 74 is once raised against the coil spring 73 by the rotational movement of the inverted part, and then the engaging parts 221, 231 of the inverted part,
When 241 arrives directly under the rocker 74, it is fitted into the engaging portion by the coil spring 73.

In the above, the proposed seat mechanism may be configured as follows.

The movable member is preferably one that moves horizontally, such as the slide plate 50, but in some cases, it may be one that moves up and down directly using cam means or the like to raise and lower the lock mechanism 70.

Normally, the locking mechanism 70 locks one inverted part with one rocker, but for example, if the inverted part is large, one inverted part is locked with two rockers. You can configure it as you like.

Furthermore, the operation means, as in the embodiment, is a duplicate key 6.
Although it is desirable to use a key cylinder 61 that can be operated with three keys to prevent theft, other means, such as a lever mechanism, may be used depending on the case.

The coil spring 73 is normally used as the springing means as in the embodiment, but other mechanisms may be selected to energize the rocker 74. For example, it is also possible to use a spring and a pressure fluid cylinder in combination. It is.

<Effect of the invention> Since the seat mechanism of the present invention is configured such that the rocker 74 locks the backrest seat part 20 from the upper position, all the inverted parts 22, 23, 24 can be easily locked and released, and the locking mechanism 70 constituting the locking device A is provided with a springing means, whereby the rocker 74 lowered to the locked state rotates and stands up. Since it is configured so that it can be raised and retreated by being pressed by There is an effect.

[Brief explanation of drawings]

Fig. 1 is a perspective view showing the main parts of the rear seat mechanism of the present invention, Fig. 2 is a schematic exploded side view of the lifting mechanism, Fig. 3 is a schematic exploded perspective view showing the main parts of the lock device used in the lifting mechanism, FIG. 4 is a longitudinal sectional side view showing the lock mechanism of the main lock device, and FIG. 5 is a schematic side view showing the key cylinder mechanism. In the figure, 10 is a seat seat part, 20 is a back seat part, 22, 23, 24 are inverted parts, 221, 2
31 and 241 are engagement holes as engagement portions, 30
50 is a slide plate as a movable member; 60 is a key cylinder mechanism as an operating means; 70 is a lock mechanism; 71
72 is a slide frame, 73 is a coil spring as a springing means, 74 is a rocker, and 741a is an inclined surface as a guide means.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) A seat seat part, a back seat part provided to the seat seat part so as to be able to be folded forward, and a seat fixed to a support means above the back seat part. The back support seat part has a plurality of inverted parts arranged in parallel, and an engaging part is provided at the rotating top of each of the inverted parts, and the locking device has a locking device for each of the inverted parts. A locking mechanism is provided with a locker which is provided oppositely to each of the parts and which locks each engaging part when the inverted part is erected. The structure includes a movable member that simultaneously drives the mechanism, and an externally operable operating means for displacing the movable member, and the locking mechanism locks the engaging portion of the inverted portion when the rocker is lowered. The rocker is set to be in a state in which the rocker can move, and the engaging portion of the inverted portion is released when the rocker is raised, and the rocker is provided with a springing means for biasing the rocker downward.
As a result, the rocker during descent is configured to be able to rise to the engaging portion release position by external force, and the movable member is displaced by the operating means to drive the lock mechanism to raise and lower the rocker. A trunk-through type rear seat mechanism for an automobile, wherein the locker of the locking mechanism is pressed by the rotating end of the inverted part that rotates and stands up even when the locker is lowered, so that it can temporarily rise and retreat. (2) The movable member is composed of a slide plate that is reciprocated in the horizontal direction by the operating means, and the slide plate is provided with oblique holes formed in the same direction for each lock mechanism, and the slide plate is provided with diagonal holes formed in the same direction for each lock mechanism. The trunk-through type rear seat mechanism for an automobile according to claim 1, wherein the locking mechanism is guided by the diagonal hole and raised and lowered by the reciprocating movement of the plate. (3) The locking mechanism includes a slide frame provided with a protrusion that engages with the diagonal hole, a case housing the slide frame so as to be movable up and down, and a case housed in the slide frame so as to be movable up and down and with an upper limit. The automotive vehicle according to claim 2 of the utility model registration claim, which comprises a rocker having a set position and a lower limit position, and a coil spring provided within the slide frame to urge the rocker downward. Trunk-through type rear seat mechanism. (4) The trunk-through type rear seat mechanism for an automobile according to claim 1, wherein the operating means is a key cylinder mechanism that can be operated with a duplicate key.