JP4078669B2 - Automotive tip-up sliding seat - Google Patents

Description

  The present invention includes a seat cushion that can be lifted up toward a seat back in a standing posture by a tip-up mechanism, and when the seat cushion is flipped up, the entire seat is moved to a predetermined area in the front or rear of the vehicle by a slide rail. The present invention relates to a chip-up / sliding seat for automobiles having an interlock mechanism that locks the entire seat so that it cannot move forward or backward from a predetermined area in the vehicle when the seat cushion is not lifted up and lifted up. .

  In automobiles such as wagons, the rear seat is placed on the slide rail to secure the occupant's walk-in space and the luggage space in the vehicle by placing the second seat behind the front seat or the third seat behind the second seat. It has been proposed that the rear side of the front seat is movably provided (Patent Document 1).

  The sliding seat, together with a tip-up mechanism that allows the seat cushion to be raised toward the seat back in a standing position, also raises the seat cushion so that the seat cushion remains in the sitting position and does not obstruct the movement direction. Otherwise, it is configured by providing an interlock mechanism that keeps the entire seat immovable forward or backward from a predetermined area in the vehicle.

In the previously proposed slide-type seat, the interlock mechanism is assembled so as to operate in cooperation with each other in the same component that is interlocked with the tip-up mechanism. For this reason, the structure as a whole is very complicated in structure.
JP 9-188170 A

  The problem to be solved by the present invention is that the interlock mechanism is composed of many assembly parts in a complicated structure in the same component interlocked with the tip-up mechanism, so that it takes time to assemble the entire mechanism. The cost is high.

  The present invention is characterized in that the interlock mechanism and the tip-up mechanism are structurally separated, and the interlock mechanism is configured to be able to be interlocked with a simple configuration as the seat cushion is flipped up by the tip-up mechanism. And

  That is, as the tip-up mechanism, two locking teeth for positioning and regulating the seat cushion seating posture and the raising posture are provided around the edge of the bracket plate, and a latch that engages with the locking teeth alternatively, An operation cam for releasing the engagement and a spring for urging the operation cam in the latch engagement direction are provided on the cushion frame, and the latch is released by pulling the operation cam.

The interlock mechanism includes a stopper plate attached within a predetermined region of the lower rail, a first lock piece that abuts the stopper plate at the lower end edge, and a second lock piece that extends rearward from the upper end side of the first lock piece. The middle abdomen is assembled from a substantially inverted L-shaped lock lever pivotally attached to the plate surface of the upper rail with a support shaft.

In both mechanisms, one end is pivotally attached to the cushion frame plate surface at a position away from the pivot axis of the seat cushion, and the other end portion is provided on the plate surface of the bracket plate. Cooperate with the link bar connected to the bracket plate with the engagement pin fitted in the longitudinal hole formed along the front,
When the seat cushion is seated, the lock lever is abutted and pressed from the upper edge of the second lock piece by the link lever engaging pin located on the rear side of the long hole, and when the seat cushion is raised, the lock lever is locked. The lever is slid to the front side of the long hole and released from the engagement pin of the link lever so that it can ride on the stopper plate, and the lock lever slides to the front side of the long hole than the link pin of the link lever. The most important feature is that the rearward movement of the engagement pin is restricted by closing the slot at the rear.

  The chip-up / slide-type seat for automobiles of the present invention can be constructed inexpensively because the chip-up mechanism and the interlock mechanism can be easily assembled with a small number of components, and both can be assembled with a link bar. Also, the second lock piece of the lock lever is placed in contact with the engagement pin of the link bar at the upper edge, and the entire lever is pressed by the engagement pin of the link bar that slides in the long hole as the seat cushion is lifted up. Therefore, the interlock mechanism can be provided to operate reliably in conjunction with the tip-up mechanism.

  FIG. 1 shows a lower frame structure including a seat cushion of an automobile seat. This automobile seat includes a long-type slide rail 1, and a tip-up mechanism 2 that flips up a seat cushion toward a seat back in a standing posture in order to secure a walk-in space for passengers and a luggage space in the vehicle, When the seat cushion is not flipped up, the interlock mechanism 3 is configured to lock the entire seat so as not to move forward from a predetermined area in the vehicle.

  The vehicle seat includes a lower rail 1a installed on a vehicle body floor, an upper rail 1b slidably supported by the lower rail 1a, and a main bracket 4a rising from the upper rail 1b in left and right pairs (only one side is shown). The entire seat including the upper rail 1b is mounted on the lower rail 1a so as to be movable forward (in the direction of the arrow X) in the vehicle.

  The seat cushion is pivotally attached to the plate surface of the sub bracket 4b, which is fixed to the front side of the main bracket 4a by the cushion frame 5, by the pivot 6 and can be lifted up by the tip-up mechanism 2 toward the seat back in the standing posture. It is attached. The interlock mechanism 3 is provided on the slide rail 1. A link bar 7 that interlocks with the interlock mechanism 3 is stretched between the two mechanisms as the seat cushion is flipped up by the tip-up mechanism 2.

  As shown in FIG. 2, the tip-up mechanism 2 is provided with two locking teeth 20a and 20b with a U-shaped notch around the tip edge of the sub bracket 4b, and the seat cushion seating posture and the jumping posture can be positioned and locked. It is configured. The lock teeth 20a and 20b are provided on the plate surface of the cushion frame 5 so as to be swingable by the support shaft 8 so that a hook-shaped latch 21 is alternatively engaged.

  As shown in FIG. 3, the latch 21 is assembled with an operating cam 22 for releasing the engagement with the lock teeth 20a and 20b. The operation cam 22 is provided on the plate surface of the cushion frame 5 on the side opposite to the mounting surface of the latch 21 so as to be swingable by the support shaft 9. As will be described later, the operation cam 22 is provided so as to operate by a passenger's pulling operation.

  The latch 21 is provided with a planting pin 10 so that the latch 21 is assembled with the operating cam 22 so as to be disengageable from the lock teeth 20a, 20b. The operating cam 22 is provided with a cam hole 22 a for receiving the planting pin 10. A guide hole 11 through which the planting pin 10 is inserted is provided on the plate surface of the cushion frame 5.

  The operating cam 22 is provided with a protruding wire 22b and an operation wire cable 12 for connecting the protruding piece 22b and the wire tip. In addition, a coil spring 23 that urges the operating cam 22 in the engagement direction of the latch 21 with respect to the lock teeth 20 a and 20 b is arranged between the cushion cam 5 and the coil spring 23.

  In addition, a cover 24 for bearing the pivot 6 and the support shaft 8 of the latch 21 is attached to the cushion frame 5 by the support shaft 13 and fixed to the cushion frame 5. The assigning cover 24 is provided with a stopper pin 14 (see FIG. 2) for positioning the seat cushion jumping posture from the sub bracket 4b.

  The interlock mechanism 3 includes a substantially inverted L-shaped lock lever 30 as shown in FIG. The lock lever 30 is formed of a first lock piece 30a facing the bottom surface of the lower rail 1a and a second lock piece 30b extending above the first lock piece 30a. The lock lever 30 is pivotally attached to the side surface of the upper rail 1b by the pivot 15 at the middle abdomen, and can swing by holding the return coil spring 31 between the lower part of the pivot 15 and the front side of the upper rail 1b. Is attached.

  A stopper plate 32 (see FIG. 1) that can contact the lower end side of the first lock piece 30a with respect to the lock lever 30 is disposed on the inner bottom surface of the lower rail 1a in the longitudinal direction near the front in the forward direction of the entire seat. ing. The interlock mechanism 3 is configured including the stopper plate 32.

  The link bar 7 is pivotally attached to the plate surface by a support shaft 7a at one end portion away from the pivot 6 of the cushion frame 5, and the other end portion is formed in a longitudinal hole 16 provided on the plate surface of the main bracket 4a. It is connected with the main bracket 4a by the engaging pin 7b to be fitted. Thereby, the lock lever 30 is assembled and arranged so that the second lock piece 30b comes into contact with the engagement pin 7b of the link bar 7 at the upper edge.

  In the figure, reference numerals 17a and 17b denote rollers of the upper rail 1a, and 18 denotes lock teeth of the slide rail 1.

  In the vehicle seat configured as described above, since the engagement pin 7b of the link bar 7 is in contact with the second lock piece 30b of the lock lever 30 in the seat cushion sitting posture, the entire seat is slid forward. Even so, the second lock piece 30a abuts against the stopper plate 32 (see FIG. 4), and the entire seat is locked so that it cannot move forward.

When the seat cushion is flipped up toward the seat back by the tip-up mechanism 2, the link bar 7 is pulled up and driven as shown in FIG. 5, and the engaging pin 7 b slides along the upper edge of the long hole 16 toward the front side of the hole. Moving. As a result, the lock lever 30 is released from being pressed by the engagement pin 7 b and can be lifted onto the stopper plate 32, and the lock lever 30 is slid and moved to the front side of the long hole 16. Since the rearward movement of the engagement pin 7b is restricted by closing the elongated hole 16 behind 7b, the entire seat is kept so that the seat cushion is kept in the raised position and does not obstruct the movement direction. The position can be moved forward.

It is a side view which mainly shows the frame structure of the chip up slide type seat for cars concerning the present invention. It is a side view which shows the tip up mechanism with which the seat | sheet of FIG. 1 is provided from the exterior side of a cushion frame. It is a side view which shows the tip up mechanism with which the seat | sheet of FIG. 1 is provided from the inner side of a cushion frame. It is explanatory drawing shown in the state which does not chip up the sheet | seat of FIG. It is explanatory drawing which shows the sheet | seat of FIG. 1 in a chip-up state.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Slide rail 2 Tip up mechanism 20a, 20b Lock tooth 21 Latch 22 Actuation cam 23 Spring 3 Interlock mechanism 30 Lock lever 30a 1st lock piece 30b 2nd lock piece 31 Spring 32 Stopper plate 4a, 4b Bracket 5 Cushion frame 6 Cushion Frame pivot 7 Link bar

Claims (1)

A tip-up mechanism that pivots the rear side of the cushion frame to a bracket plate that rises from the upper rail of the slide rail with a pivot, and that allows the seat cushion to jump up toward the seat back in a standing posture with the pivot as a fulcrum,
When the seat cushion is lifted up, the entire seat is unlocked by a slide rail so that it can be moved to a predetermined area in the front or rear of the vehicle.When the seat cushion is seated, the entire seat is moved from the predetermined area in the vehicle toward the front or rear. In a chip-up slide type automobile seat equipped with an interlock mechanism that locks impossible,
The tip-up mechanism is provided with two locking teeth for positioning and regulating the seating posture and the raising posture of the seat cushion around the edge of the bracket plate, a latch that engages with the locking tooth of the bracket plate, An operation cam for releasing the engagement and a spring for urging the operation cam in the direction of engagement with the latch are provided on the cushion frame, and the latch is assembled so that the engagement of the latch can be released by a pulling operation of the operation cam.
The interlock mechanism includes a stopper plate attached within a predetermined region of the lower rail, a first lock piece that abuts the stopper plate at the lower end edge, and a second lock piece that extends rearward from the upper end side of the first lock piece. And assembled from a substantially inverted L-shaped lock lever that pivots the middle abdomen on the plate surface of the upper rail with a support shaft,
The tip-up mechanism and the interlock mechanism are pivotally attached to the plate surface of the cushion frame at one end portion away from the pivot of the seat cushion, and the other end portion is provided on the plate surface of the bracket plate. Cooperate with the link bar connected to the bracket plate with the engagement pin fitted in the long hole in the front and rear direction formed along the upper edge of the lock piece,
When the seat cushion is seated, the lock lever is abutted and pressed from the upper edge of the second lock piece with the engagement pin of the link lever located on the rear side of the elongated hole. The lock lever is released from the engagement pin of the link lever that slides in front of the slot and can be lifted onto the stopper plate, and the lock lever is slid in front of the slot. A tip-up slide type automobile seat characterized by restricting the rearward movement of the engaging pin by closing a long hole behind the mating pin.

Images