JPH06206483A - Seat device for vehicle - Google Patents

Abstract

PURPOSE:To provide a burglar prevention means for a vehicle by utilizing the seat device in a vehicular seat device equipped with a slide mechanism moving back and forth the whole of the seat device composed of a seat cushion, and of a seat-back, and with a first lift mechanism lifting the seat cushion. CONSTITUTION:This is the seat device 10 for a driver where an instrument panel 1 is disposed in front, and a kind of a pedal 3 is disposed below the panel. Under a state that the whole of the seat device 10 is slid to the foremoast position, and the front section of a seat cushion is raised up to the uppermost position, a second lift mechanism is provided, which allows the front section of the seat cushion to approach the instrument panel 1 or to come in contact with the panel by moving the seat cushion 11 up while the cushion 11 is being moved forward.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle seat device, and more particularly to a seat device having an antitheft function.

[0002]

2. Description of the Related Art Generally, a seat device provided in a vehicle is
It is customary that the entire body can be moved in the front-rear direction so that it can take an optimal sitting posture regardless of the physique of the occupant, and that the reclining angle of the seat back and the tilt angle of the seat cushion can be adjusted. . Furthermore, actual Kaihei 3
According to Japanese Patent Application Laid-Open No. -112047, a seat back is configured to be capable of being folded inward by a lower seat back and an upper seat back, so that a seat can be seated in a more comfortable posture.

[0003]

The vehicle is equipped with a key system for preventing theft. In addition, in recent years, in addition to the key system described above, various systems for more surely preventing theft have been proposed, but a new system has been proposed in terms of the theft prevention reliability, structure, cost, and the like. The realization of the system is being demanded.

Therefore, it is an object of the present invention to provide a new structure which is relatively simple and excellent in the prevention of theft by using the above-mentioned seat device.

[0005]

In order to solve the above problems, the present invention is characterized by having the following configuration.

First, the invention according to claim 1 of the present application (hereinafter,
A first invention) is a vehicle seat device having a seat cushion and a seat back, and an instrument panel arranged in the front, and pedals arranged below the seat panel. And a first lift mechanism that lifts the seat cushion upward. The slide mechanism slides to the foremost position, and the first lift mechanism moves the seat cushion to the uppermost position. In the state of being lifted to at least, the seat cushion is further lifted to a position higher than the uppermost position, and a second lift mechanism is provided to bring a front portion of the seat cushion close to or in contact with the instrument panel. Here, the first and second aspects of the first invention
The lift mechanism includes one that lifts the entire seat cushion and one that lifts only the front portion.

The invention according to claim 2 (hereinafter referred to as the second invention) supports the second lift mechanism in the first invention so that the rear end portion of the seat cushion is rotatably supported with respect to the seat back. By providing the shaft supporting portion, the front portion of the seat cushion lifted to the uppermost position by the first lift mechanism can be further lifted.

Furthermore, the invention according to claim 3 (hereinafter referred to as the third
In the first invention or the second invention, in the state where the seat mechanism is slid to the foremost position by the slide mechanism and the seat cushion is lifted to the uppermost position by the first lift mechanism, at least the seat is acted by the second lift mechanism. The front portion of the seat cushion can be brought close to or in contact with the instrument panel by moving the cushion forward from the frontmost position and allowing the cushion to be lifted upward from the uppermost position. And

The invention according to claim 4 (hereinafter, referred to as the fourth
The invention) embodies the third aspect of the present invention, which includes a shaft support portion that supports the second lift mechanism so that the rear portion of the seat cushion can rotate and move back and forth, and a front link having a fixed front end portion. By connecting the rear end and the front end of the rear link whose rear end is movable, the rear end of the rear link moves forward and the connecting part of both links moves upward while moving forward. And a screw shaft that is screwed to the rear end of the rear link of the intermediate link mechanism and that rotates to move the rear end of the rear link back and forth. An actuator for rotating the screw shaft, and a connecting portion between the front link and the rear link in the center-folding link mechanism is connected to a front lower surface of the seat cushion.

Furthermore, the invention according to claim 5 (hereinafter referred to as the fifth
The invention applies one of the first to fourth inventions to a seat device in which a seat back is composed of an upper seat back and a lower seat back, and a seat cushion is rotated with respect to the lower seat back. It is characterized by being movable.

[0011]

Next, the operation of the above invention will be described.

According to the first and second aspects of the invention, the entire seat device including the seat cushion and the seat back is slid to the foremost position by the slide mechanism, and the seat cushion is lifted to the uppermost position by the first lift mechanism. In this state, at least the front portion of the seat cushion is further lifted upward by the second lift mechanism, so that the front portion of the seat cushion approaches or abuts on the instrument panel. for that reason,
There is no space between the seat cushion and the instrument panel for inserting a foot, and the pedals arranged below the instrument panel are covered by the seat cushion. Therefore,
It becomes impossible to operate the pedals, and as a result, the vehicle cannot be driven.

According to the third and fourth aspects of the invention, as in the first and second aspects of the invention, the entire seat device is slid to the foremost position by the slide mechanism, and the front portion of the seat cushion is provided with the first lift. With the mechanism lifted to the uppermost position, the second lift mechanism causes the seat cushion to move forward from the foremost position, and the front portion thereof is lifted above the uppermost position. Therefore, the gap between the seat cushion and the instrument panel is further narrowed, and the operation of the pedals is prevented more reliably.

Further, according to the fifth aspect of the invention, the actions of the first to fourth aspects of the invention are realized in the seat device in which the seatback is composed of the upper seatback and the lower seatback.

[0015]

EXAMPLES Examples of the present invention will be described below.

As shown in FIG. 1, a seat apparatus 10 according to the present embodiment has an instrument panel 1 and a handle 2 protruding from the panel 1 in the front, and an accelerator pedal and a brake below the instrument panel 1. Pedals such as pedals 3
Is a seat device for a driver's seat in which a seat cushion 11 and a seat back 12 are provided, and the seat back 12 is a lower seat back 12
It is divided into a and an upper seat back 12b.

As shown in FIGS. 2 and 3, the seat device 10 has a pair of left and right base frames 13 and 13 (only one of which is shown, the same applies below) extending in the vehicle front-rear direction below both sides. A pair of left and right tilt frames 14, which also extend in the front-rear direction of the vehicle body, on the frames 13, 13.
14 is provided, and a frame-shaped cushion frame 15 is further provided above the tilt frames 14 on both sides.
The seat cushion 11 is placed and fixed above the cushion frame 15.

Further, as shown in FIG. 2, a support mechanism 20 for the seat back 12 is provided at the rear ends of the tilt frames 14, 14.

The support mechanism 20 is composed of the tilt frame 1
A pair of left and right substantially fixed to the rear end portions of 4, 14 respectively.
Fixed brackets 21, 21 and the bracket 2
A pair of left and right first movable frames 22 and 22 each having a lower end rotatably connected to an upper end of the first and the second movable members 21 and 21, and a lower end of each first movable frame 22 and 22 having a lower end freely rotatable. The pair of left and right second movable frames 23, 23 connected to each other, and the first bar 2 installed between the left and right connecting portions of the fixed bracket 21 and the first movable frame 22.
4, the first movable frame 22 and the second movable frame 23
The second bar 25 is erected between the left and right connecting portions of and, and the third bar 26 is erected between the upper ends of the left and right second movable frames 23, 23. Then, the lower seat back 12a shown in FIG.
In addition, the upper seat back 12b has the second movable frame 23,
23 are attached respectively.

A fixed gear 31 fixed to the fixed bracket 21 and the first movable frame 2 are provided around the connecting portion between the fixed bracket 21 and the first movable frame 22.
There is provided a first reclining mechanism 30 including a rotary gear 32 rotatably supported by 2 and meshed with the fixed gear 31, and a motor 34 for rotating the rotary gear 32 via a worm gear 33. When the rotary gear 32 is rotated by the motor 34 via the worm gear 33, the first movable frames 22 and 22 move to the fixed bracket 2.
It pivots back and forth around the connection point with 1, 2 to thereby adjust the reclining angle of the lower seat back 12a.

Similarly, the second bar 2 is provided around the connecting portion between the first movable frame 22 and the second movable frame 23 on one side.
5, a fixed gear 41 fixed to the first movable frame 22, a rotary gear 42 rotatably supported by the second movable frame 23 and meshed with the fixed gear 41, and a rotation gear 43 via the worm gear 43. A second reclining mechanism 40 including a motor 44 for rotating the gear 42 is provided. If the motor 44 rotates the rotary gear 42 via the worm gear 43, the second movable frame 2
3 and 23 rotate back and forth around the connection point with the first movable frames 22 and 22, and the reclining angle of the upper seat back 12b is adjusted.

Further, the seat device 10 includes a slide mechanism 50 for sliding the entire seat device 10 in the vehicle front-rear direction with respect to the vehicle body floor 4 via the base frames 13, 13, and the tilt frame 14, 14
On the other hand, a first lift mechanism 60 for tilting up the cushion frame 15 and the seat cushion 11 placed on the frame 15 and a second lift mechanism 80 for preventing the vehicle from being stolen are provided. Next, the structure of these mechanisms 50, 60, 80 will be described.

First, the slide mechanism 50 will be described. As shown in FIG. 3, the leg members 51 ...
A pair of left and right guide rails 52, 52 extending in the front-rear direction via 51 are arranged.
The base frames 13 and 13 are engaged with 52 so as to be slidable back and forth. A front frame 53 and a rear frame 54, which extend in the vehicle width direction, are fixedly provided between the left and right guide rails 52, 52.
A screw shaft 55 extending in the front-rear direction is rotatably provided between the shafts 3, 54, and a female screw sleeve 56 is fixedly mounted on one of the base frames 13 and screwed onto the screw shaft 55. A sliding motor 57 is installed on the front frame 53, and a bevel gear 58 attached to the rotating shaft of the motor 57 and a bevel gear 59 attached to the front end of the screw shaft 55 are meshed with each other. There is.

Therefore, when the screw shaft 55 is rotated by the rotation of the motor 57 via both bevel gears 58 and 59, the female screw sleeve 56 or the base frame 13 is moved forward or backward depending on the rotating direction. As a result, the entire seat device 10 is slid back and forth.

Next, the structure of the first lift mechanism 60 will be described. As shown in FIG.
The rear end portion is connected to the tilt / tilt frames 14, 14 via the pins 61, 61, and the front end portion can swing up and down. On the other hand, at the front ends of the tilt frames 14, 14, the first and second arms 62a, 6 extending forward and upward are provided.
Bell cranks 62, 62 having 2b are rotatably attached, and left and right bell cranks 62, 62
A connecting shaft 63 extending in the width direction of the vehicle body is installed between the first arms 62a, 62a, and brackets 64, 64 are fixedly mounted on the lower surface of the front end portion of the cushion frame 15, and the lower end portions thereof are connected by the connecting portions. It is inserted through the shaft 63.

A tilting motor 66 is installed on one of the tilt frames 14 via a mounting member 65, and a bevel gear 67 fixed to the rotation shaft of the motor 66 is attached to the rear end of the mounting member 65. The bevel gear 69 on the screw shaft 68, which is supported by the portion, is meshed, and the front end of the screw shaft 68 is screwed to a nut member 70 provided on the second arm 62a of the bell crank 62. .

Therefore, when the screw shaft 68 is rotated by the motor 66 through the pair of bevel gears 67 and 69, the bell crank 62 is rotated in the direction a from the position shown in the drawing, whereby the connecting shaft 63 and Bracket 64,6
The front end portion of the cushion frame 15 is lifted upward via the seat cushion 4, thereby the seat cushion 1
The tilt angle of 5 will be adjusted.

The structure of the second lift mechanism 80 will be described. As shown in FIGS. 3 and 4, first, the lower surfaces of the rear end portions of the tilt frames 14, 14 and the base frame 1 are first described.
Brackets 81 and
81, 82, 82 are fixed, and the corresponding brackets 8
1, 82 are connected by a pin 83, and the pin holes 82a, 82a provided in the brackets 82, 82 on the side of the base frames 13, 13 are elongated holes elongated in the front-rear direction. Therefore, the tilt frames 14, 14
Are the pins 83, with respect to the base frames 13, 13.
The front part can be rotated upward around the connection point by 83, and the whole part can be moved in the front-rear direction.

Further, center folding link mechanisms 84, 84 are provided on the upper surfaces of the front end portions of the base frames 13, 13. The front end portion of the link mechanism 84 is the base frame 1
3, a front link 84a rotatably connected to the third link 3 and a rear link 84b having a front end connected to the rear end of the front link 84a. Then, the front link 84a and the rear link 84 in the link mechanisms 84, 84 on both sides.
Brackets 85 and 85 fixed to the lower surface of the front end portion of the tilt frames 14 and 14 are connected to the connecting point with b via connecting pins 84c and 84c.

Further, a nut member 86 is attached to the rear end of the rear link 84b of the one center-folding link mechanism 84, and the front end of the base frame 13 is rotatably supported. A screw shaft 87 is arranged in the front-rear direction of the vehicle body and is screwed into the nut member 86. A bevel gear 88 is attached to the rear end of the screw shaft 87, and a motor 90 is fixed to the base frame 13 via an attachment member 89. The bevel gear attached to the rotary shaft of the motor 90. 91 and the bevel gear 88 are in mesh with each other.

Therefore, when the motor 90 is rotated in a predetermined direction, the rear end of the rear link 84b of the one center-folding link mechanism 84 is moved forward, and the front portion of the link mechanism 84 is moved forward. The link 84a and the rear link 84b are changed from the substantially horizontal state shown in FIG. 4 to the center-folded state shown in FIG. At this time, the connection point (pin 84c) of both links 84a and 84b moves upward while moving forward, so that the tilt frame 1 connected to this connection point
Similarly, the front ends of the tilt frames 14, 14 move upward while moving forward, and the rear ends of the tilt frames 14, 14 rotate and move with respect to the base frames 13, 13 as described above. Since the tilt frames 14 and 14 are supported so as to be movable back and forth, the front end portions are lifted upward while moving forward with the cushion frames 15 and the seat cushions 11 arranged above them. Become.

According to the above configuration, as shown in FIG.
First, the slide mechanism 50 can slide the entire seat device 10 to the foremost position indicated by the chain line, and the first lift mechanism 60 can move the front portion of the seat cushion 11 up to the uppermost position also indicated by the chain line. It is possible to set the seat position according to the physique of the occupant. Further, since the seat back 12 is divided into the lower seat back 12a and the upper seat back 12b, and the reclining angles of the seat back 12 and the seat back 12 are adjustable, the occupant can take a most comfortable sitting posture.

In addition to the slide mechanism 50, the first lift mechanism 60, the reclining angle adjusting mechanisms 30 and 40, etc., the seat apparatus 10 further includes a second lift mechanism 80 for theft prevention of the vehicle. Because it is provided,
The front portion of the seat cushion 11, which is slid to the frontmost position by the slide mechanism 50 and lifted to the uppermost position by the first lift mechanism 60, can be further moved forward and lifted upward.
That is, as shown in FIGS. 3 to 5, by rotating the motor 90 in a predetermined direction, the pair of bevel gears 91, 8 is rotated.
The front portions of the tilt frames 14, 14 move upward while moving forward through the 8, the screw shaft 87, and the center bending link mechanism 84.

As a result, the tilt frames 14, 14
The front portion of the seat cushion 11, which is placed on the upper side via the cushion frame 15, moves from the position shown by the solid line in FIG. 6 to the position shown by the chain line, and comes close to the vicinity of the instrument panel 1. . Therefore, even if the user wants to sit on the seat device 10, his or her legs cannot be extended forward, and the pedals 3 arranged below the instrument panel 1 are seated on the seat cushion 11.
Therefore, the pedals 3 cannot be operated because they are covered by.

[0035]

As described above, according to the vehicle seat device of the present invention, the sliding mechanism slides the seat cushion to the foremost position, and the first lift mechanism lifts the seat cushion front portion to the foremost position. Since a second lift mechanism for moving at least the front portion of the seat cushion above the uppermost position to bring the seat cushion close to or in contact with the instrument panel is used by the second lift mechanism when the vehicle is dismounted. If the front part of the vehicle is placed close to or in contact with the instrument panel, even if a person other than the driver tries to sit on this seat device, his / her feet cannot extend forward, and the lower part of the instrument panel Since the pedals that are arranged at will be covered by the seat cushion,
It becomes impossible to operate these pedals. Thereby, the theft of the vehicle can be reliably prevented.

[Brief description of drawings]

FIG. 1 is a schematic side view of a seat device according to an embodiment of the present invention.

FIG. 2 is a perspective view showing a frame structure around a first lift mechanism in the seat apparatus.

FIG. 3 is a perspective view showing a frame structure around the second lift mechanism.

FIG. 4 is an enlarged side view showing the configuration of a second lift mechanism.

FIG. 5 is an enlarged side view showing the operating state of the second lift mechanism.

FIG. 6 is a schematic side view showing an operating state of the seat device as a whole.

[Explanation of symbols]

 1 Instrument Panel 3 Pedal 10 Seat Device 11 Seat Cushion 12 Seat Back 12a Lower Seat Back 12b Upper Seat Back 50 Slide Mechanism 60 First Lift Mechanism 80 Second Lift Mechanism 84 Center Fold Link Mechanism 84a Front Link 84b Rear Link 87 Screw shaft 90 Actuator (motor)

Claims (5)

[Claims] 1. A vehicle seat device having a seat cushion and a seat back, wherein an instrument panel is provided in the front and pedals are provided below the instrument panel.
The slide mechanism includes a slide mechanism that integrally slides the seat cushion and the seat back in the front-rear direction of the vehicle body, and a first lift mechanism that lifts the seat cushion upward, and the slide mechanism slides the seat cushion to the frontmost position. In a state where the seat cushion is lifted to the uppermost position by the lift mechanism, at least the seat cushion is moved further upward from the uppermost position, and a second lift mechanism for bringing the front portion thereof close to or in contact with the instrument panel is provided. A vehicle seat device characterized by being provided. 2. The second lift mechanism has a shaft supporting portion that rotatably supports a rear end portion of the seat cushion, and the seat cushion is rotated with respect to the seat back about the shaft supporting portion. The vehicle seat device according to claim 1, wherein the front portion of the seat cushion lifted to the uppermost position by the first lift mechanism is further moved upward. 3. The second lift mechanism is slid to the foremost position by the slide mechanism, and the seat cushion is lifted to the uppermost position by the first lift mechanism,
At least the front portion of the seat cushion is brought close to or in contact with the instrument panel by moving at least the seat cushion forward from the frontmost position and lifting the seat cushion upward from the uppermost position. The vehicle seat device according to claim 1 or claim 2. 4. The second lift mechanism comprises a shaft supporting portion for rotatably and longitudinally supporting a rear portion of a seat cushion, a rear end portion and a rear end portion of a front link having a fixed front end portion, and the front and rear end portions move forward and backward. A center-folding link mechanism configured to connect the front end of the rear link made possible and to move forward while the rear end of the rear link moves forward while the connecting part of both links moves upward. A screw shaft that is screwed to the rear end of the rear link of the center-folding link mechanism to rotate the rear end of the rear link back and forth, and an actuator that rotates the screw shaft. The vehicle seat device according to claim 3, wherein a front lower surface of the seat cushion is connected to a connecting portion between the front link and the rear link in the center-folding link mechanism. 5. The seat back comprises an upper seat back and a lower seat back, and the seat cushion is rotatable with respect to the lower seat back. Vehicle seat device.