JP5402230B2 - Tilt-down vehicle seat - Google Patents

Description

  The present invention relates to a tilt-down vehicle seat in which a seat cushion moves downward by tilting a seat back onto the seat cushion.

  A conventional tilt-down type vehicle seat connects, for example, a seat back whose lower end portion is rotatably attached to the floor surface, a leg provided on the lower side of the front portion of the seat cushion, and a rear portion of the seat cushion and the seat back. It has a connecting link (see Patent Document 1). The upper end portion of the leg is rotatably attached to the front portion of the seat cushion, and the lower end portion is rotatably attached to the floor surface side.

  The connecting link extends from the rear portion of the seat cushion, and the rear end portion is attached to be rotatable at a position above the lower end portion of the seat back. Therefore, the seat cushion is pushed forward by the connecting link and moved by tilting the seat back onto the seat cushion. At the same time, the leg collapses and the seat cushion moves downward. At this time, there is a gap between the connecting link and the floor surface, and there is a desire to cover and hide the gap.

  As a cover for covering the gap, a cover attached to an ottoman device is conventionally known (see Patent Document 2). The ottoman device has an ottoman body that is rotatably attached to the front portion of the seat cushion, and a link mechanism that rotates the ottoman body with respect to the seat cushion. A first cover is attached to the link mechanism, and a second cover that moves upward by two links is attached to the first cover. The second cover is moved upward by a spring that urges the first cover upward, thereby covering the gap between the first cover and the ottoman body.

JP 2007-1578 A JP 2006-239291 A

  However, the conventional tilt-down type vehicle seat is not provided with a cover that suitably covers a gap around the connecting link that may occur when the seat mode changes. Further, since the second cover provided in the ottoman device needs to be moved above the first cover against gravity, it is necessary to increase the biasing force of the spring that biases the second cover. Therefore, an object of the present invention is to provide a tilt-down vehicle seat that includes a cover that can suitably cover a gap around a connecting link that may occur when the seat mode changes.

  In order to solve the above-mentioned problems, the present invention is a tilt-down type vehicle seat having a structure as described in each claim. According to invention of Claim 1, the 1st cover which covers a connection link is attached to the connection link. A second cover that extends downward from the first cover and covers the lower region of the first cover is movably attached to the first cover or the connecting link. Therefore, the connection link can be covered by the first cover, and the lower region of the connection link can be covered by the second cover. For this reason, the first cover and the second cover can cover a gap around the connecting link that may occur when the aspect of the tilt-down vehicle seat changes. The second cover can move to the deployed position using gravity when moving to the deployed position below the first cover. Therefore, a spring for moving the second cover downward with respect to the first cover is unnecessary, or the spring force of the spring can be reduced.

According to the invention described in claim 1 , one end of the second cover is rotatably attached to the first cover. Therefore, the second cover can be attached to the first cover more easily than a structure that is attached to the first cover so as to be movable in parallel. In addition, since one end of the second cover is rotatably attached to the first cover, downward torque due to its own weight is generated on the other end. Therefore, the second cover is easy to expand downward with respect to the first cover by the torque.

It is a left view of the vehicle seat in use state. It is a left view of the vehicle seat in the middle of moving from a use state to a storage state. It is a left view of the vehicle seat in the retracted state. It is a partial left side view of the vehicle seat in use in the vicinity of the first cover. It is a partial left view of the vehicle seat in the retracted state in the vicinity of the first cover. FIG. 6 is a sectional view taken along line VI-VI in FIG. 1.

  An embodiment of the present invention will be described with reference to FIGS. The tilt-down type vehicle seat 1 is mounted on a vehicle floor 10 such as a vehicle as shown in FIGS. 1 to 3 and changes between the use state of FIG. 1 and the retracted state (tilt-down state) of FIG. The floor surface 10 includes a cargo floor surface 10a positioned at the rear of the vehicle, a foot floor surface 10b positioned in front of the cargo floor surface 10a, and a slope portion positioned between the cargo floor surface 10a and the foot floor surface 10b. 10c, 10d. The foot floor surface 10b is lower than the cargo floor surface 10a and extends substantially horizontally. The slope portion 10c extends obliquely from the cargo floor 10a to the front lower direction. The slope portion 10d extends obliquely from the slope portion 10c to the front lower direction at an angle closer to the vertical than the slope portion 10c.

  As shown in FIG. 1, the seat 1 has a seat back 2 and a seat cushion 3. The lower end 2a of the seat back 2 is rotatably attached to a bracket 11 provided on the cargo floor 10a. The front portion 3 a of the seat cushion 3 is connected to the floor surface 10 by the legs 4. The rear portion 3 b of the seat cushion 3 is connected to the seat back 2 by a connecting link 5. The upper end portion 4a of the leg 4 is rotatably attached to the front portion 3a of the seat cushion 3, and the lower end portion 4b of the leg 4 is rotatably attached to the bracket 12 provided on the slope portion 10c.

  The front end portion 5b of the connecting link 5 is attached to the rear portion 3b of the seat cushion 3 so as not to move as shown in FIGS. The connecting link 5 extends rearward and upward from the seat cushion 3, and the rear end portion 5a is rotatably attached to the attachment portion 2b of the seat back 2 by pins 15 as shown in FIG. As shown in FIG. 1, the attachment portion 2b is located slightly lower than the center of the seatback 2 and above the lower end 2a.

  A first cover 6 and a second cover 7 are attached to the connecting link 5 as shown in FIGS. The first cover 6 is locked to the connecting link 5 and attached to the connecting link 5 so as not to move. The first cover 6 is box-shaped, and has an outer plate 6 a that covers the outer surface of the connecting link 5 and an inner plate 6 b that covers the inner surface of the connecting link 5.

  The second cover 7 is plate-shaped as shown in FIGS. 4 to 6 and has a shape that is slightly smaller than the first cover 6 and substantially the same shape. The second cover 7 is installed between the outer plate 6 a and the inner plate 6 b of the first cover 6, and the front end 7 a is rotatably attached to the front lower portion of the outer plate 6 a by a pin 16. The second cover 7 rotates around the pin 16 and moves between the unfolded position shown in FIG. 4 and the storage position shown in FIG.

  As shown in FIG. 6, the second cover 7 protrudes below the first cover 6 from the outer plate 6a of the first cover 6 and the lower gap 6c of the inner plate 6b at the unfolded position in FIG. . The second cover 7 in the storage position in FIG. 5 is located substantially between the outer plate 6a and the inner plate 6b (see FIG. 6). The pin 16 is provided with a spring 8 that biases the second cover 7 with respect to the first cover 6 in the deployment direction (clockwise). The spring 8 has one end 8 a locked to the outer plate 6 a and the other end 8 b locked to the second cover 7.

  As shown in FIG. 6, a bracket cover 13 that covers the outer side surface (left side surface) of the bracket 11 is attached to the bracket 11. The first cover 6 and the second cover 7 are positioned above the bracket cover 13.

  As shown in FIGS. 1 and 4, the seat 1 has the seat back 2 standing up with respect to the seat cushion 3 and tilting slightly backward in the use state. The first cover 6 stands along the seat back 2 and is slightly inclined backward. The second cover 7 is urged downward by its own weight and the spring 8, and is deployed below the first cover 6. As for the 2nd cover 7, the one edge part 7c contact | abuts to the bracket cover 13 by the side of the luggage compartment floor surface 10a, and a downward movement is controlled. The second cover 7 extends below the first cover 6 and covers the gap between the first cover 6 and the cargo compartment floor surface 10a.

  As shown in FIG. 2, when the seat back 2 is tilted forward, the seat back 2 is tilted forward about the lower end 2a. The connecting link 5 pushes the seat cushion 3 forward, and the leg 4 falls forward with the lower end 4b as the center. As a result, the seat cushion 3 moves forward and downward toward the floor 10b. The first cover 6 moves forward together with the connecting link 5. The second cover 7 moves forward while one edge portion (lower edge portion) 7 c is in contact with the slope portions 10 c and 10 d of the floor surface 10 or the bracket cover 13. At the same time, the second cover 7 rotates counterclockwise with respect to the first cover 6 and moves into the first cover 6.

  As shown in FIGS. 1 to 3, when the seat 1 is changed from the use state to the retracted state, the seat cushion 3 is largely moved forward by the leg 4 and the connecting link 5. Therefore, as shown in FIG. 2, a large gap may be generated between the connecting link 5 and the bracket 11 or between the connecting link 5 and the floor surface 10. On the other hand, the 1st cover 6 covers the circumference | surroundings of the connection link 5 in the outer side (drawing near side) of the connection link 5. FIG. The second cover 7 covers the gap between the first cover 6 and the bracket 11 and the gap between the first cover 6 and the floor surface 10 below the first cover 6.

  As shown in FIGS. 3 and 5, when the seat 1 is in the retracted state, the leg 4 becomes substantially horizontal, and the seat cushion 3 comes close to the foot floor surface 10 b of the floor surface 10. The seat back 2 is superimposed on the seat cushion 3 and becomes substantially horizontal. The first cover 6 has a protruding portion 6d that protrudes toward the inclined surface portion 10d along the inclined surface portions 10c and 10d of the floor surface 10. The second cover 7 is substantially parallel to the first cover 6, and substantially the whole is accommodated in the first cover 6. The second cover 7 is urged by the spring 8, and the one edge portion 7c comes into contact with the inclined surface portion 10c.

  As described above, the first cover 6 that covers the connection link 5 is attached to the connection link 5 as shown in FIGS. A second cover 7 that extends downward from the first cover 6 and covers the lower region of the first cover 6 is movably attached to the first cover 6.

  Therefore, the connection link 5 can be covered with the first cover 6, and the lower region of the connection link 5 can be covered with the second cover 7. Therefore, the first cover 6 and the second cover 7 can cover a gap around the connecting link 5 that may occur when the aspect of the tilt-down vehicle seat 1 changes. The second cover 7 can move to the deployed position using gravity when moving to the deployed position below the first cover 6. Therefore, the spring force of the spring 8 (see FIG. 4) that moves the second cover 7 downward relative to the first cover 6 can be reduced.

  As shown in FIGS. 4 and 5, the second cover 7 has a front end 7 a rotatably attached to the first cover 6. Therefore, the second cover 7 can be easily attached to the first cover 6 as compared with a structure or the like attached to the first cover 6 so as to be movable in parallel. Moreover, since the front end 7a is rotatably attached to the first cover 6, the second cover 7 has a downward torque due to its own weight on the rear end 7b side. Therefore, the second cover 7 is easily developed downward with respect to the first cover 6 by the torque.

(Other embodiments)
The present invention is not limited to the above-described embodiment, and may be the following form.
(1) The seat back 2 and the leg 4 shown in FIG. 1 are attached to the floor surface 10 via brackets 11 and 12. However, a slide rail may be provided on the floor surface, and the lower end of the seat back and the lower end of the leg may be rotatably attached to the slide rail.
(2) In the second cover 7 shown in FIGS. 4 and 5, the front end portion 7 a is rotatably attached to the first cover 6, and the rear end portion 7 b side can be developed downward with respect to the first cover 6. However, the second cover may be attached to the first cover so as to be movable in parallel, and substantially the entire second cover may be developed downward with respect to the first cover. Alternatively, the rear end portion of the second cover may be rotatably attached to the first cover, and the front end portion side of the second cover may be developed downward with respect to the first cover.
(3) As shown in FIGS. 4 and 5, a spring 8 is provided between the first cover 6 and the second cover 7 to urge the second cover 7 downward with respect to the first cover 6. However, the spring 8 may not be provided, and the second cover 7 may be urged by its own weight and deployed below the first cover 6.
(4) As shown in FIGS. 4 and 5, the second cover 7 is restricted in its downward movement amount when the one edge portion 7 c hits the floor surface 10 side. However, a stopper that restricts the amount of downward movement of the second cover may be provided between the first cover and the second cover.
(5) The connecting link 5 of FIGS. 1 to 3 has a front end portion 5b attached to the rear portion 3b of the seat cushion 3 so as not to move. However, the connecting link 5 may be rotatably connected to the rear portion of the seat cushion 3.
(6) The connecting link 5 in FIGS. 1 to 3 is a separate member from the frame of the seat cushion 3. However, the connecting link 5 may be formed integrally with the frame of the seat cushion 3.
(7) The second cover 7 shown in FIG. 6 is rotatably attached to the first cover 6. However, the second cover may be rotatably attached to the connecting link.
(8) Although the seat 1 shown in FIG. 1 is mounted on a vehicle such as an automobile, it may be mounted on a ship, an aircraft, or the like.

DESCRIPTION OF SYMBOLS 1 ... Tilt-down type vehicle seat 2 ... Seat back 2a ... Lower end part 3 ... Seat cushion 4 ... Leg 5 ... Connection link 6 ... First cover 7 ... Second cover 8 ... Spring 10 ... Floor surfaces 11, 12 ... Bracket

Claims (1)

A tilt-down type vehicle seat in which the seat cushion moves downward by tilting a seat back on which the lower end portion is rotatably attached to the floor side onto the seat cushion,
A leg having an upper end rotatably attached to a front portion of the seat cushion and a lower end rotatably attached to the floor surface; and a rear end extending from a rear portion of the seat cushion and the rear end of the seat back A connecting link rotatably attached to the seat back at a position above the lower end,
A first cover that covers the connection link is attached to the connection link,
A second cover that extends downward from the first cover and covers the lower region of the first cover is movably attached to the first cover ,
The second cover is configured such that a front end portion is rotatably attached to the first cover, and a rear end portion of the second cover is developed below the first cover using gravity.
Between the first cover and the second cover, the downward movement of the second cover is restricted so as to restrict the second cover from coming into contact with the floor surface when the seat back stands up. Stopper is provided,
The second cover is configured to move upward toward the first cover 6 in contact with the slope portion of the floor surface when the seat back is tilted forward from the use state. A tilt-down vehicle seat.

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