JPH0241945A - Seat device for automobile - Google Patents

Abstract

PURPOSE:To obtain superior ridability even at a sports type of automobile by constituting a seat cushion so as to be move on the rear part thereof in upward direction in connection with operation to open a door. CONSTITUTION:Before riding, a lock plate 25 is engaged to a sector gear 19 in lift down condition on a seat frame 10. When an outer handle is pulled up under the condition, an inner cable is pulled out, and the lock plate 25 is turned for breaking away itself from the sector gear 19. Then, a crank member 18a is pulled by a lift up spring 22, the sector gear 19 is turned around a first supporting shaft 20 as the center, the seat frame 10 is also moved upward and the front part is connected to a first bracket 14 and the rear part alone is moved to a lift up position in two-dot chain line. A seat supported thereby is also lifted up into rising condition on the rear, and sitting on a set, a rider can sit down to the seat cushion without a head.

Description

[Detailed description of the invention] (Industrial application field) The present invention relates to a seat device for a motor vehicle.

(Prior Art) In general, recent automobiles are designed to have a low vehicle height in consideration of aerodynamic characteristics, so that riding performance tends to deteriorate. In contrast, for example, JP-A-61-16
As described in Japanese Patent No. 3034, there is one in which the seat is rotated in conjunction with the opening operation of the door.

According to this, it is expected that riding comfort will be improved to some extent.

By the way, not only do so-called sports-type cars have seats lower than normal-type cars, but some also have side supports installed on the seat cushions to improve occupant retention, making it even more difficult to get into the car. There is. To solve this problem, there is a known system in which the side portions of the seat cushion are lowered in conjunction with the opening operation of the door.

(Problem to be Solved by the Invention) However, as mentioned above, in sports type automobiles, even if the side parts of the seat cushion are lowered, the rear part of the seat cushion is maintained in a low state. There is an inconvenience that a large drop occurs when a passenger is seated, making it impossible to improve riding comfort.

An object of the present invention is to realize a seat device that provides excellent riding comfort even in sports-type automobiles.

(Means for Solving the Problems) That is, the present invention provides a seat device for an automobile on which a passenger is seated, including a lifting mechanism that moves up and down at least a rear part of a seat cushion, and a lifting mechanism that moves the lifting mechanism up and down the seat in conjunction with a door opening operation. The cushion is characterized by comprising an actuation mechanism that moves the cushion in the direction in which it moves.

(Function) According to the above configuration, at least the rear part of the seat cushion moves upward in conjunction with the door opening operation.
The difference in height when the occupant is seated is reduced, and riding comfort is improved. After the occupant is seated, the rear portion of the seat cushion is moved downward by using appropriate means.

In the measurement, the same symbols will basically be used for common elements.

As shown in FIG. 1, a center console 3 equipped with a change lever 2, etc. is provided in the center of the front part of the vehicle interior of an automobile 1, and a seat 4 is provided to the right of this center console 3. ing. The seat 4 is provided with a seat cushion 5 on which an occupant sits, and a seat back 6 that supports the back of the occupant. In addition, Sea 1~
A handle 7 is arranged in front of the handle 4. Further, a door 8 for getting on and off is arranged on the right side of the seat 4, and an inner handle 9 for unlocking the door from the indoor side is attached to the inner surface of the door 8.

As shown in FIG. 2, the seat cushion 5 is attached to a generally rectangular seat frame 10 so as to cover and wrap the seat frame 10 from above. Additionally, side supports 11.11 are provided on both sides of the seat cushion 5. The left and right side portions of the seat frame 10 protrude downward in a trapezoidal shape at the center of the front and back, and these trapezoidal portions 121
Slide frames 13 and 13 for moving the seat 4 in the longitudinal direction of the vehicle body are arranged below the seats 2 and 2, respectively.

As shown in FIG. 3, this slide frame 13 is
The upper web 13a has a first and second bracket 1 near its front and rear ends.
-14.1.5 are fixed respectively. Zunawachi,
A long hole 16 in the front-rear direction is formed in the first bracket 14 at the front of the web 13a, and a connecting pin 17 fixed to the trapezoidal portion 12 is inserted through the long hole 16 so as to be movable back and forth. . On the other hand, an end portion of a left-right crank-shaped pipe 18 whose intermediate portion is curved in a crank-shape is rotatably inserted into the second bracket 15 at the rear of the web 13a. The base of one sector gear, which is arranged approximately horizontally, is fixed to the end of the pipe 18 on the door side. An intermediate portion of this sector gear 19 is connected to the trapezoidal portion 12 via a first support shaft 20.
It is rotatably fixed to the On the other hand, a locking plate 21 fixed to the crank portion 1.8a of the crank-shaped pipe 18
One end of the lift-up spring 22 is locked and connected to the reinforcing plate 23 attached to the frame 10 and the lift-up tin song 22 to the sea 1.
The other end is locked and connected. In other words, the lifting mechanism 24 is constituted by the lift-up spring 22, the crank-shaped pipe 18, and one sector gear. In such a structure of the elevating mechanism 24, when the sector gear 19 is set in a free state, the crank part 18a is pulled by the lift-up spring 22, and the sector gear 19 rotates the second bracket 15. Since the seat frame 10 rotates clockwise as a fulcrum, an upward force is generated in the seat frame 10 connected to one sector gear via the second support shaft 20. At this time, since the front side of the seat frame 10 is connected to the first bracket 14 of the slide frame 13 via the connecting pin 17, only the rear part of the seat frame 10 moves upward.

On the other hand, in front of the sector gear 19, a generally arcuate lock plate 25 is provided at one end with a tooth portion that can engage with a tooth portion of one of the sector gears. The other end of the lock plate 25 is rotatably fixed to the trapezoidal portion 12 of the seat frame 10 via a second support shaft 26.

Further, a mounting plate 28 for mounting a return spring 27 and the like is provided upright on each of the lock plays 1 to 25, and one end of the return spring 27 is locked to this mounting plate 28. The other end of the return spring 27 is disposed rearward through the back surface of one of the sector gears, and its tips are locked to two brackets fixed to the seat frame 10. In other words, the lock plate 25 is constantly urged by the return spring 27 in the direction in which the teeth engage with one sector gear.

In front of the lock plate 25, flexible lift I/up wires 30 are arranged vertically in parallel.
A support member 32 that supports a portion of each outer part of the lift-down wire 31 is disposed. One end of the inner cable 30a of the lower lift-up wire 30 is attached to the mounting plate 28 of the lock plate 25. The other end of the lift-up wire 30 is wrapped around the outer handle 33 of the door 8. As shown in FIG. 4, the door inner panel 34 is located above the outer handle 33 of the door 8.
A part of the outer part of the other end of the lift-up wire 30 is fixed in the vertical direction to the support member 35 fixed to the support member 35, and the operation side end of the inner cable 30a extending from there is provided on the outer handle 33. It is attached to the locking portion 33a.

Further, a lift-down operation lever 36 is arranged outside the trapezoidal portion 12 of the seat frame 10. This lift-down operating lever 36 is rotatably supported with respect to the seat frame 10 by a lever shaft 37 that passes through the trapezoidal portion 12 from the inside out. One end of an inner cable 31a protruding from a part of the outer part of the lift-down wire 31 is fixed to an arm 38 provided at the inner end of the lever shaft 37. Note that the other end of this inner cable 31a is also attached to the attachment plate 28 of the lock plate 25.

Next, the implementation of this embodiment will be explained with reference to FIGS. 5 and 6.

As shown in FIG. 5, it is assumed that the lock plate 25 is engaged with one sector gear while the seat frame 10 is lifted down before riding the vehicle. When the outer handle 33 is pulled up in this state, the inner cable of the lift-up wire 30 is pulled out from a part of the outer part as shown by the two-dot chain line in FIG. The second support shaft 26
As a result, the lock plate 25 separates from the sector gear 19 and moves to the release position as shown by the two-dot chain line in FIG. Then, the crank-shaped pipe 18
Since the crank portion 18a is pulled by the lift-up spring 22, the sector gear 19 is supported by the first bracket 14 while the first support shaft 20 is pulled by the lift-up spring 22.
Rotates around the center. Since this first support shaft 20 is fixed to the seat frame 10, the seat frame 10 also moves upward as the sector gear 19 is rotated. At that time, since the front part of the seat frame 10 is connected to the first bracket 14 of the slide frame 13 via the connecting pin 17 as described above, only the rear part of the seat frame 10 is lifted and the seat The frame 10 moves to the lift-up position shown by the two-dot chain line in FIG. In other words, the seat 4 supported by the seat frame 10 is also lifted up relative to the slide frame 13. therefore,
When the occupant takes a seat, he or she can sit on the seat cushion 5 without any fall.

In this case, when the outer handle 33 is released, the lock plate 25 is pulled by the return spring 27, so as shown in FIG.
The lock plate 25 engages with the sector gear 19 again while the seat frame 10 is held in an upright position.

Therefore, the seat 4 does not fall down unexpectedly immediately after the occupant is seated.

On the other hand, when lowering the seat 4 to the lift-down position, the lift-down operation lever 36 is moved from the lock position indicated by the solid line in FIG. 6 to the unlock position indicated by the two-dot chain line. Then, since the inner cable 31a of the lift town wire 31 is pulled, the lock plate 25 is also pulled accordingly and moves to the release position. Therefore, the seat frame 1
The counterclockwise rotating force of the crank-shaped pipe 18 due to the weight of the occupant acting on the lift-up spring 2
The biasing force of 2 becomes larger than the clockwise rotational force applied to the crank-shaped pipe 18, thereby gradually lowering the seat 4 to the lift-down position. Furthermore, when the lift-down operating lever 36 is returned to the lock position, the V-hook plate 25 is engaged with the sector gear 9 by the action of the return spring 27, thereby locking the seat frame 10.
The seat frame 10 that has been lowered to the lift-down position is held.

As shown in FIG. 7, a stay damper 39 is interposed between the crank portion 18a of the crank-shaped pipe 18 and another reinforcing plate 23 fixed to the seat frame 10. The cushioning function allows the seat 4 to descend more smoothly.

FIG. 8 shows a second embodiment of the invention.
In the embodiment, a bracket 39 is fixed to the end surface of the door 8 on the door hinge side, and the operation side end of the inner cable 30a of the lift-up wire 30 is attached to the bracket 39. That is, when the door 8 is opened when exiting the vehicle, the inner cable 30a is moved to a predetermined position.
- Since the lock plate 25 is pulled by the lock, the lock plate 25 moves to the release position and unlocks the sector gear 19. Therefore, the seat frame 10 receives a force in the upward direction due to the action of the lift-up spring 22, and as the occupant raises his or her hips, the rear portions of the seats 1 to 4 are lifted upward (see Fig. 5).
. When the door 8 is closed after exiting the vehicle, the lock plate 25 or return spring 27 lengthens the bow and engages one sector gear in the up position of the sea 1 to frame 10. Hold it fixedly with sheet 4. Therefore, the next time a passenger gets on board, Sea 1~
4 is held in the lift-up position, allowing for smooth seating. In this second embodiment as well, when lowering the sear 1-4 to the lift-up position, the lift-down operation lever 36 is used.

FIG. 9 shows a third embodiment of the present invention. In this third embodiment, a locking portion 40 is provided on the inner handle 9 of the door 8, and the locking portion 40 is attached to the above-mentioned lift. 1 - The operation side end of the inner cable 30a of the up wire 30 is attached. Therefore, when the inner handle 9 is pulled, the inner cable 30a is pulled with a predetermined stroke. Therefore, this third
In the embodiment as well, since the lock play I.25 moves to the release position and unlocks the sector gear 19, the sea 1~frame]0 corresponds to the lift up spring 22.
As a result, the rear portion of the seat 4 is lifted upward by receiving a force in the upward movement direction (see Fig. 5).

Then, after lifting up the seat 4, press the inner handle 9.
When released, the lock play 1.25 is pulled by the return spring 27 and locks the sector gear 9 at the lift-up position of the seat frame 10. Therefore, in this third embodiment, when the occupant next gets on the vehicle, the seat 4 is in the lift-up position, so that the occupant can sit down smoothly.

Next, FIGS. 10 and 11 show a fourth embodiment of the present invention. That is, in this fourth embodiment, the 10th
As shown in the figure, the trapezoidal portion 12 of the seat frame 10
An electric actuator 41 is disposed in front of the lock plate 25 attached to the
The rod portion 41a is engaged with a mounting plate 28 provided on the lock plate 25. As shown in FIG. 11, an electrical circuit connecting the electric actuator 41 and the power source 42 is provided with a normally open door switch 43 that also serves as an interior light switch. In this case, the electric actuator 41 is configured such that the rod portion 41a retracts when the door switch 43 is closed, and the rod portion 41a automatically projects when the door switch 43 is opened. Therefore, when the door 8 is opened, the door switch 43 is closed, the rod portion 41a is retracted, the lock plate 25 is moved to the release position, and the sector gear 19 is unlocked, so that the seat frame 10 is lifted. Due to the action of the up spring 22, a force in the upward movement direction is received, and the rear part of the seat 4 is lifted up. Then, when the occupant is seated, the seat frame 10 gradually descends to the lift-down position against the biasing force of the lift-up spring 22. In this case, if the stay damper purgae shown in FIG. 7 is installed, the descent can be performed more smoothly. On the other hand, if the door 8 is closed, the door switch 43
is opened, and the rod portion 41 of the electric actuator 41 is opened.
a automatically protrudes, the lock plate 25 is pulled by the return spring 27, and the sector gear 19 is moved to the lift-up position of the seat frame 10.
will be locked.

(Effects of the Invention) As described above, according to the present invention, at least the rear part of the seat cushion moves upward in conjunction with the door opening operation, so the drop when the occupant is seated is reduced, and the riding comfort is improved. This results in the effect of improvement. Particularly, if the present invention is applied to a sports type automobile with a low seat position, there is an advantage that even better riding comfort is ensured.

[Brief explanation of the drawing]

Figures 1 to 11 show embodiments of the present invention, in which Figure 1 is a perspective view of the front of the vehicle cabin with the ceiling section cut away, and Figure 2 does not show the seat back. 3 is a schematic perspective view showing the operating mechanism in this embodiment, FIG. 4 is a cut end view of the door cut vertically at the outer handle portion, and FIGS. 5 and 6 are the main parts. FIG. 7 is a partial plan view showing another embodiment of the seat frame; FIG. 8 is a schematic plan view of the vicinity of the door hinge showing the second embodiment of the present invention; FIG. , FIG. 9 is a schematic plan view of the vicinity of the inner handle of a door showing a third embodiment of the present invention. 10 and 11 show a fourth embodiment of the present invention, in which FIG. 10 is a schematic side view of the seat frame viewed from inside, and FIG. 11 is a circuit diagram of the fourth embodiment. . 5... Seat cushion, 24... Lifting mechanism (18
...Crank-shaped pipe, 19...Sector gear, 2
2... Lift up spring), 20.25, 26
．． 30... Operating mechanism (20... First support shaft, 25...
・Lock plate, 26...second support shaft, 30...lift-up wire).

Claims (1)

[Claims] (1) A seat device for an automobile on which a passenger is seated, including a lifting mechanism that moves up and down at least the rear part of the seat cushion, and a lifting mechanism that operates in a direction in which the seat cushion moves upward in conjunction with a door opening operation. An automobile seat device, characterized in that it is equipped with an actuation mechanism.