JPS62216844A - Seat device for automobile - Google Patents

Abstract

PURPOSE:To simplify the constitution of a seat device further easily perform its control, by pivotally supporting parallel links to an automobile body and supporting members of a seat and constituting the seat device such that the seat can be also lifted simultaneously with the restriction from its movement to a predetermined distance or more when the seat is moved rearward by a driving means. CONSTITUTION:A pair of right and left parallel links 2, 2 are constituted of a pair of front and rear links 3, 3 on an automobile body floor 1, and the front end of each link 3 is pivotally supported onto the body floor 1 respectively, while a supporting bed 7 is pivotally supported to the vertically turning end of the link in its rear part. And the supporting bed 7 supports a seat 9 freely being longitudinally moved on sliding rails 10 while provides a driving means longitudinally moving said seat 9. Further a guide means 26, which restricts the seat 9 from moving rearward in a predetermined distance or more while permits said seat 9 to be lifted with respect to the body floor 1, is provided. By this constitution as in the above, the driving means for longitudinally moving the seat 9 can serve also for its lifting, and a seat device enables its constitution to be simplified further its control to be easily performed.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to an automobile seat device that facilitates getting on and off the automobile.

(Prior Art) Some automobile seats can be moved forward and backward or raised and lowered to accommodate the physique and preferences of the occupant (for example,
4If Opening and Closing Publication No. 57-114730).

(Problems to be Solved by the Invention) By the way, when getting into and out of a car, there are cases in which the person gets into the car with the action of sitting down on the seat, and there are cases where the person gets out of the car with the action of standing up from the seat (hereinafter, this will be referred to as t1'). In order to facilitate this movement, it is desirable to provide a wide leg space for the person seated in front of the seat and to make the height of the seat 1ξ high.

Therefore, it is conceivable to move the seat rearward and raise the seat by applying the above-mentioned conventional configuration when getting on and off the vehicle.

However, in the above-mentioned conventional structure, the drive means for moving the seat back and forth and the drive means for raising and lowering the seat are provided separately, so the structure is complicated and the control thereof is complicated.

(Object of the Invention) The present invention was made in view of the above-mentioned circumstances, and it is an object of the present invention to provide a simple configuration of a seat device for an automobile to facilitate getting on and off the vehicle.

(Structure of the Invention) 4. of this invention to achieve the above object. The ¥ mark is that the front end of each link that constitutes the parallel link is supported on the vehicle body floor, a support stand is supported at the vertically movable end of each link, and the seat can be moved back and forth on this support stand. Providing a driving means for freely supporting the seat and moving the seat back and forth,
The present invention is characterized in that guide means is provided which restricts the seat from moving backward beyond a predetermined distance with respect to the vehicle body floor, while allowing the seat to rise.

(Example) Embodiments of the present invention will be described below with reference to the drawings.

In Figures 1 to 4, 1 is the car body floor;
Arrow Fr indicates the front of the vehicle body. A pair of left and right parallel links 2.2 are provided on the vehicle body floor 1, and each parallel link 2 is composed of a pair of front and rear links 3.3. The front end of each of these links 3 is pivotally supported on the vehicle body floor 1 by a first pivot 4, and the rear part of each link 3 can freely rotate up and down. Then, a second
The support base 7 is also pivoted by the pivot 4:I+6.

]2) The seat 9 is mounted on the support base by the sliding rail 10.
17 and is movably supported. Seat 9 above is seat/
John 9a, C] Pack 9b and Hendres l-
Consists of 9c. The sliding rail 10 includes a fixed rail 11 supported by the support base 7 and extending in the front-rear direction, and a movable rail 12 that supports the seat 9 and is slidable back and forth on the fixed rail. The rear ends of the left and right movable rails 12° 12 are connected to each other by a first connecting plate 13.

Seven driving stages 15 are provided for moving the seat 9 back and forth relative to the support base 7. To explain this drive means 15, a pair of left and right threaded rods 16.16 are mounted on the support base 7.
I can sink. The axis of each screw forest 16 extends in the rear direction, and its front end is fixed to the support base 7. On the other hand, 17 is an electric motor, and although this electric motor 17 is not shown, the movable rail 12
is supported by The output of this electric motor 17 is 1l.
d118 is interlocked and connected to each threaded rod 16 by a transmission means 9.

In particular, as shown in FIG. 4, the transmission means 19 has a transmission case 21 supported by the movable rail 12. This transmission case 21 has a built-in worm gear 22, and a worm wheel 23 of this worm gear 22 connects to the threaded rod 16.
The worm 24 of the worm gear 22 is the output of the electric motor 17! Connected to b l 8. When the worm 24 is rotated by driving the electric motor 17 in forward or reverse rotation, the worm wheel 23 that meshes with the worm wheel 23 rotates. The worm wheel 23 is screwed onto the screw 44516 as described above, and since the screw cup 16 does not move in the axial direction, the rotation of the worm wheel 23 causes the worm wheel 23 to move along the axial direction of the threaded rod 16. The seat 9 moves forward or backward, and the movable rail 12 moves the seat 9 back and forth.

Furthermore, a guide means 26 is provided which restricts the seat 9 from moving backward beyond a predetermined distance with respect to the vehicle body floor 1, while permitting the upper blade of the seat 9 to move.

1. Regarding the guide means 26, a pair of left and right fixing bases 27, 27 are provided on the vehicle body floor l. Each of the fixed bases 27 extends in the front-rear direction.

Its cross-sectional shape is an inverted flat U-shape. A movable plate 28 is fitted into the space formed by each fixed base 27 and the vehicle body floor 1 so as to be slidable back and forth. A stopper piece 29 is integrally molded on the front end of the movable plate 28 that protrudes forward from the front end of each fixed base 27, and when this stopper piece 29 comes into contact with the front end surface of the fixed base 27, the movable plate 28
Further backward movement of 8 is prevented. Further, the rear ends of the left and right movable plates 28 and 28 protruding from the rear ends of each fixed base 27 are connected to each other by a second connecting plate 30.

A sliding plate 32 is provided on the first connecting plate 13 to protrude downward, while a sliding plate 32 is provided on the second and fourth connecting plates 30.
A stopper plate 33 facing the front surface of 2 is protrudingly provided.

When the electric motor 17 is driven to move the seat 9 backward together with the movable rail 12.12 as shown by arrow A in FIG. 28 toward the rear. When the movable plate 28 moves and the collar piece 29 comes into contact with the front end surface of the fixed base 27, the movable plate 28 moves as shown by the solid line in FIG.
Further rearward movement of the movable rail 12.12 is thus also restricted. From here, when the movable rail 12.12 is further moved backward by the drive of the electric motor 17, since the backward movement of the movable rail 12.12 is restricted as described above, the fixed rail 12.12
1, the sliding rail 10, to begins to move forward.

In this case, since the sliding rail 10.10 is supported by the parallel link 2, it rotates forward and upward as shown by the solid line B in FIG. In other words, the seat 9 rises as shown by the solid line C in Fig. 2.As a result, the seat 9 assumes a high position as shown by the upper dotted line in Fig. It becomes easier to operate.

Furthermore, in the above configuration, a locking means 34 is provided for locking the seat 9 to the vehicle floor 1 side. This long F stage 34 will now be explained with reference to FIG. 4.

The support stand 7 has four wooden cylindrical supports 35 that protrude downward. When the seat 9 takes a low posture as described above, the lower end surfaces of these columns 35 come into contact with the fixed base 27, so that the seat 9 is connected to the fixed base via the 1st/1 moving rail 10 and the support base 7. 27" 2.1 is placed.

A lock 36 is coaxially protruded from the lower end surface of each support column 35. This hook 36 has a neck portion 37 having a smaller diameter than the support column 35, and is formed at the lower end of this neck portion 37 and is attached to the support column 35.
The head portion 38 has a diameter smaller than that of the head portion 38. The fixed base 27 and the movable plate 28 are each formed with an engagement hole 40 that allows the head 38 to pass therethrough but does not allow the support column 35 to pass therethrough. Furthermore, an engagement hole 40 formed in the movable plate 28
A notch 41 is formed on the rear edge so as to be continuous with this engagement hole 40, and this notch 41 is freely fitted into the neck portion 37 when the movable plate 28 moves forward.

Further, a spring 42 is provided which biases the movable plate 28 forward.

As shown in FIGS. 1, 5 to 7, when the seat 9 takes a low posture, the neck 37 and the head 38 pass through both the engagement holes 40, 40, and the spring 42 is attached. As the movable plate 28 moves forward due to the force, the neck portion 37 and the notch 41 fit together, whereby the hook 36 is locked to the fixed base 27 and the movable plate 28, that is, the seat 9 is locked to the vehicle body floor 1 side. Ru.

Further, as described above, the seat 9 is moved backward, and the sliding plate 3
2 pushes the stopper plate 33, the movable plate 28 moves backward against the biasing force of the spring 42. When the backward movement of the movable plate 28 is stopped by the stopper piece 29, the engagement holes 40.40 of the fixed base 27 and the movable plate 28 match, and the head of the movable plate 28 passes through the engagement hole 40.40. Part 38 j
Biting and prolapse is allowed. That is, by this, the vehicle body floor,
1 is released, and the seat 9 can be raised (as shown by the solid line in FIG. 2 and by the dashed dotted line at the top of FIG. 6).

(Effects of the Invention) According to the present invention, when the seat is moved backward by the driving means for moving the seat back and forth, the backward movement is restricted by more than a predetermined backward movement with respect to the vehicle floor, and at the same time, the driving force of the driving means is used to restrict the backward movement. Because this seat LIi+ is raised, the driving means for moving the seat back and forth can also be used for raising the seat, compared to the conventional method where a separate driving means was provided for raising the seat. This simplifies the configuration of the seat device and also facilitates the control of this device.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention, in which Fig. 1 is an overall side view, Fig. 2 is a partial action explanatory view of Fig. 1, and Fig. 3 is a developed perspective view.
4 is a sectional view taken along the line IV-IV in FIG. 3, FIG. 5 is a partially enlarged sectional view of FIG. 2 is a view taken along the line ■-■ in FIG. 1. FIG. 16Φ car body floor, 2 and parallel sunk, 7 e *
Support stand, 9... Seat, 15... Drive means, 26... Guide means. Patent applicant: Daihatsu Motor Co., Ltd. Figure 5-1 Sea-no

Claims (1)

[Claims] 1. The front end of each link constituting the parallel links is pivotally supported on the vehicle floor, a support base is pivotally supported at the vertically movable end of the rear of each link, and a seat is supported on this support base so as to be movable back and forth. A seat device for a motor vehicle, characterized in that a driving means for moving the seat back and forth is provided, and a guide means is provided for restricting backward movement of the seat beyond a predetermined distance with respect to the vehicle body floor while allowing the seat to rise.