JP5112729B2 - Tip-up / sliding automotive seat - Google Patents

Description

  The present invention relates to a tip-up / sliding-type automobile seat used in a one-box car having a plurality of rows of seats in the front-rear direction.

  Conventional tip-up / sliding automobile seats are used in second seats or third seats such as one-box cars, and the seat cushions of these seats are flipped up and slid in the front-rear direction to ensure the occupant's walk-in space. It is configured so that the luggage space can be expanded. Such a seat is provided with a seating area where the seat belt can perform a predetermined function when seated, and a tip-up / slide area that is wider than the seating area and can be slid when the seat cushion is tipped up. A slide restricting mechanism for restricting the slide of the sheet to the tip-up / slide area is provided.

  In addition, a configuration in which this slide restricting mechanism is interlocked with a tip-up mechanism has been proposed (see, for example, Patent Document 1).

  Since the interlocking mechanism described in Patent Document 1 is structurally complicated, a link bar is provided in the tip-up mechanism, a long hole is formed in a bracket attached to the seat slide device, and one end of the link bar is attached to the seat cushion frame. There is also proposed a configuration in which an engaging pin attached to the other end of the link bar is loosely inserted into a long hole of the bracket and a part of the lock lever is pressed against the engaging pin. In this configuration, as the seat cushion bounces up, the link pin engagement pin slides through the long hole to release the lock lever from being pushed by the engagement pin, and the lock lever lock to the stopper plate is released. (For example, refer to Patent Document 2).

JP 9-188170 A JP-A-2005-74101

  The interlocking mechanism described in Patent Document 2 is easier to assemble by reducing the number of parts than the interlocking mechanism described in Patent Document 1, but in addition to the link bar that functions as a slide stopper by pressing the lock lever. The tip-up mechanism includes a sub-bracket having two lock teeth and attached to the bracket, and a hook for selectively engaging the two lock teeth to hold the seat cushion in a seated state or a raised state. There is a problem that the number of parts is still large, and a member such as an operating cam for releasing the engagement between the latch and the lock teeth is provided.

  Further, in the interlock mechanism described in Patent Document 2, there is a problem that the forward movement of the seat can be restricted but the backward movement cannot be restricted because the lock lever rotates.

  The present invention has been made in view of such problems of the prior art, and is a tip-up slide that can reduce the number of parts as much as possible and can regulate the range of movement in the front-rear direction of a seat in a seated state. The purpose is to provide a seat for an automobile.

  In order to achieve the above object, the invention according to claim 1 is a seat cushion, a seat back provided at a rear portion of the seat cushion, and the seat cushion is slid in the longitudinal direction of the vehicle body. And a tip-up-sliding vehicle seat having a tip-up mechanism for flipping up the seat cushion toward the seat back, wherein the slide device is seated on the seat cushion. The seat is configured to be slidable in a possible seating area and a tip-up / slide area in which the seat cushion is kept flipped up toward the seat back, and the seat is held in the seating area And a slide restricting mechanism for the slide device. The tip-up mechanism is attached to the seat cushion, while the slide-up stopper is slidably mounted vertically and a stopper member that engages with the slide-control stopper and controls the seat slide. It is composed of a link member and a lock member that engage with the slide restriction stopper, and the seat cushion is held in a seated state or a flipped-up state by locking the link member with the lock member. At least one of the link member and the lock member is brought into contact with the slide restriction stopper so that the slide restriction stopper can be engaged with the stopper member to hold the seat in the seating area. Features.

  According to a second aspect of the present invention, the lock member is connected to a lock member release lever, and the lock member release is performed by bringing the slide restriction stopper into contact with the lock member when the seat cushion is flipped up. The operation of the lever is restricted.

  The link member and the lock member are rotatably attached to a seat cushion frame, and the link member has a guide groove, while the lock member is loosely inserted into the guide groove. The lock pin is inserted into the first position of the guide groove to hold the seat cushion in the seated state, and the lock pin is inserted into the second position of the guide groove. Then, the seat cushion is held in the flipped-up state.

  According to a fourth aspect of the present invention, the guide groove extends substantially parallel to the first guide groove, the second guide groove extending in a direction substantially orthogonal to the first guide groove, and the second guide groove. And a third guide groove, wherein the first position is the first guide groove, and the second position is the third guide groove.

  According to a fifth aspect of the present invention, when the lock pin is inserted into the first guide groove, the link member is engaged with the slide restriction stopper to hold the seat in the seating area. It is characterized by that.

  According to a sixth aspect of the present invention, when the lock pin is inserted into the second guide groove, the lock member is engaged with the slide restricting stopper to hold the seat in the seating area. It is characterized by that.

  According to a seventh aspect of the present invention, when the lock pin is fitted into the third guide groove, the slide restricting stopper is disengaged from the stopper member, and the seat is moved into the tip-up / sliding area. It is characterized by being able to slide.

According to an eighth aspect of the present invention, the slide device includes a lower rail fixed to a vehicle body floor, and an upper rail slidably attached to the lower rail, and the slide restriction stopper includes the upper rail. On the other hand, the stopper member is attached to the lower rail.

  According to the present invention, the slide restriction mechanism includes a slide restriction stopper that is attached to the slide device so as to be movable up and down, and a stopper member that engages with the slide restriction stopper to restrict the slide of the sheet. The tip-up mechanism is composed of a link member that engages with the slide restriction stopper and a lock member, and the link member is locked by the lock member to hold the seat cushion in a seated state or a raised state, and in the seating region Since the seat is held in the seating area by making the link member or lock member abut against the slide restricting stopper so that the slide restricting stopper can be engaged with the stopper member, the seat can be seated with a simple structure with a small number of parts. The range of movement of the seat in the front-rear direction can be restricted.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 shows a second seat or a third seat provided in a one-box car or the like, and employs a chip-up / slide-type automobile seat S according to the present invention. The seat S includes a seat cushion 2 attached to a slide device (described later) and capable of tip-up, and a seat back 6 attached to the slide device via a reclining device 4 so as to be tiltable.

  In addition, a region X shown in FIG. 1A shows a seating region where the seat belt can be seated and the seat belt can perform a predetermined function, and a region Y shown in FIG. 1B shows a seating region. A tip-up / sliding region that can slide when the seat cushion 2 is tip-up wider than X is shown. In the tip-up / slide area Y positioned in front of or behind the seating area X, the seat belt cannot perform a predetermined function.

  As shown in FIG. 2, the vehicle seat S according to the present invention is attached to the slide device 8, and includes a slide regulating mechanism 10 for holding the seat S when seated in the seating region X, a luggage space in the vehicle, and the like. In order to ensure, a tip-up mechanism 10 that flips the front end of the seat cushion 2 toward the seat back 6 is provided.

  The slide device 8 includes a long lower rail 14 fixed to the vehicle body floor and having a substantially U-shaped cross section, and an upper rail 16 that is slidably attached to the lower rail 14 and has an inverted L-shaped cross section. The upper rail 16 is provided with a plurality of rolling elements 18 accommodated in the lower rail 14 for sliding the upper rail 16 relative to the lower rail 14.

  Further, a side frame 20 constituting a part of the seat cushion frame is attached to the upper rail 16, and the other end of the connecting shaft 22 (one end (front end) is rotatably attached to the front end portion of the side frame 20 ( The rear end is rotatably attached to a seat cushion frame 24 to which a seat cushion is attached. Further, one end (inner end) of the spiral spring 26 is locked to the front end of the connecting shaft 22, and the other end (outer end) of the spiral spring 26 is locked to a pin 28 erected on the side frame 20. The connecting shaft 22 is biased in the direction of arrow A (the direction in which the seat cushion 2 is flipped up) by the elastic force of the spiral spring 26.

  The seat back frame 29 to which the seat back is attached is attached to the side frame 20.

  A front end portion of a first projecting portion 30a of a seat link (link member) 30 having two projecting portions is rotatably attached to the seat cushion frame 24 behind the attaching portion of the connecting shaft 22. An intermediate portion of the link 30 is rotatably attached to the side frame 20 via a rotation shaft 32. The seat link 30 has a second projecting portion 30b that extends in substantially the same direction as the first projecting portion 30a and restricts the vertical movement of a slide restricting stopper (described later). A guide groove 30c is formed. The guide groove 30c includes a first guide groove 30c1 extending from the vicinity of the rotating shaft 32 toward the second protruding portion 30b, a second guide groove 30c2 extending in a direction substantially orthogonal to the first guide groove 30c1, and a second guide groove 30c2. The third guide groove 30c3 extends substantially parallel to the two guide grooves 30c2 and is formed in a substantially U shape together with the second guide groove 30c2.

  Further, one end (rear end) of a link lock (lock member) 34 is rotatably attached to the side frame 20, and a lock pin 36 stands on the other end (front end) of the link lock 34. The lock pin 36 is loosely inserted into the guide groove 30c of the seat link 30 described above. Further, a pin 38 is erected on the upper end portion of the link lock 34, and the other end of the wire cable whose one end is locked to the pin 38 is a link lock release lever (attached to the upper or middle portion of the seat back 6). (Not shown). The link lock 34 is always urged in the direction of arrow B by an elastic means (not shown) such as a spring.

  On the other hand, a substantially rectangular slide restriction stopper 40 is attached to the upper rail 16, and the slide restriction stopper 40 is held by a stopper guide 42 fixed to the upper rail 16 so as to be movable up and down. Further, the slide restricting stopper 40 has a pressing pin 44 and a spring locking pin 46 erected on the center line in the longitudinal direction (vertical direction). The pressing pin 44 and the spring locking pin 46 are the stopper guide 42. Are inserted into guide grooves 42a formed in the vertical direction. One end of a torsion coil spring 48 is locked to the spring locking pin 46, and the slide restricting stopper 40 is always urged upward by the elastic force of the torsion coil spring 48.

  Further, a lock plate 50 having a lock tooth 50a formed at the tip (lower end) is attached to the upper rail 16 so as to be movable up and down, and is formed along the longitudinal center line of the upper wall of the lower rail 14. The lock plate 50 is loosely inserted into the upper opening 14a, and the lock teeth 50a are configured to be freely inserted so as to face a large number of lock holes (not shown) formed in the bottom wall of the lower rail 14 at predetermined intervals. Yes. Further, two stopper plates (stopper members) 52 and 54 are joined to one of the upper walls of the lower rail 14 located on both sides of the upper opening 14a in a state of being separated at a predetermined interval in the front-rear direction. When the seat S is in the seating region, the slide restricting stopper 40 is located in a region sandwiched between the rear edge of the front stopper plate 52 and the front edge of the rear stopper plate 54, and the seat S is located in the seating region X. When in the front or rear tip-up / slide region Y, the slide restricting stopper 40 rides on one of the two stopper plates 52 and 54.

  As shown in FIG. 2B, the second projecting portion 30b of the seat link 30 is arranged above the slide restricting stopper 40 so as to be able to contact with each other, and the link lock 34 is configured to slide. It arrange | positions above the stopper 40 and is comprised so that it can contact | abut mutually.

  The operation of the tip-up / slide type automobile seat S according to the present invention having the above-described configuration will be described below.

  2 to 4 show a state where the lock teeth 50a of the lock plate 50 are fitted into the lock holes of the lower rail 14, and the seat S is held in the seating region X. FIG. FIG. 2 shows a state in which the lock pin 36 of the link lock 34 is fitted into the first guide groove 30c1 among the guide grooves 30c formed in the seat link 30, and in this state, the connecting shaft 22 is a spiral spring. The seat cushion 2 is urged upward by the elastic force of 26 and the seat cushion 2 is urged upward, but the seat link 30 is locked by the lock pin 36 of the link lock 34. Further, the pressing pin 44 of the slide restricting stopper 40 is pressed by the second projecting portion 30 b of the seat link 30, and the tip end (lower end) of the slide restricting stopper 40 is fitted into the upper opening 14 a of the lower rail 14. ing.

  Thus, in a state where the tip of the slide restricting stopper 40 is fitted into the upper opening 14a of the lower rail 14, for example, a lock plate release lever (not shown) provided below the front end of the seat is operated to operate the lower rail. Even if the lock teeth 50a of the lock plate 50 with respect to the lock holes 14 are unlocked, the sheet S is moved back and forth by the slide restricting stopper 40 with respect to the rear edge of the front stopper plate 52 or the front edge of the rear stopper plate 54. It is regulated by the contact. Accordingly, the seat S cannot move beyond the seating area X and is held in the seating area X.

  Although the slide restricting stopper 40 is biased upward by the torsion coil spring 48, when the lock pin 36 of the link lock 34 is fitted into the first guide groove 30c1 of the seat link 30, the second protrusion of the seat link 30 is provided. While the pressing pin 44 is pressed by the installation portion 30b, when the lock pin 36 of the link lock 34 is fitted into the second guide groove 30c2 of the seat link 30, the pressing by the second protruding portion 30b of the seat link 30 is performed. Since the pressing pin 44 is pressed by the lower edge portion of the link lock 34 instead of the pressing of the pin 44, the distal end portion of the slide restricting stopper 40 is continuously fitted in the upper opening portion 14a of the lower rail 14.

  When it is desired to move the seat S rearward for reasons such as expansion of the luggage space, when the link lock release lever attached to the seat back 6 is operated, the link lock 34 is moved in the direction opposite to the arrow B in FIG. Rotate. As a result, as shown in FIG. 3, the lock pin 36 of the link lock 34 moves toward the second guide groove 30 c 2 along the first guide groove 30 c 1 of the seat link 30, so that the elastic force of the spiral spring 26 Alternatively, when the front end portion of the seat cushion 2 is flipped up toward the seat back by being assisted by the elastic force of the spiral spring 26, the lock pin 36 of the link lock 34 becomes the second of the seat link 30 as shown in FIG. It moves along the guide groove 30c2 (actually, the seat link 30 rotates in the direction of arrow C around the rotation shaft 32 with the lock pin 36 stopped).

  In the state of FIG. 2, the pressing pin 44 of the slide restriction stopper 40 is pressed by the second projecting portion 30b of the seat link 30, whereas in the state of FIG. In addition to the pressing of the pressing pin 44 by the second projecting portion 30 b of 30, the upper edge portion of the slide restricting stopper 40 is also pressed by the lower edge portion of the link lock 34 as the link lock 34 rotates in the reverse direction of the arrow B. Will be. Therefore, in the state of FIG. 4, the pressing by the second projecting portion 30 b of the seat link 30 against the pressing pin 44 of the slide restricting stopper 40 is released, but the upper edge portion of the slide restricting stopper 40 is still at the link lock 34. Since it is pressed by the lower edge, the tip of the slide restricting stopper 40 is held in a state of being fitted into the upper opening 14 a of the lower rail 14.

  That is, the slide restricting stopper 40 is biased upward by the torsion coil spring 48, but when the lock pin 36 of the link lock 34 is fitted into the first guide groove 30c1 of the seat link 30, the second protrusion of the seat link 30 is applied. While the pressing pin 44 is pressed by the mounting portion 30b, when the lock pin 36 of the link lock 34 is fitted into the second guide groove 30c2 of the seat link 30, the pressing pin 44 is pressed by the second protruding portion 30b of the seat link 30. Since the pressing pin 44 is pressed by the lower edge portion of the link lock 34 instead of the pressing of the pin 44, the tip end portion of the slide restricting stopper 40 is continuously held in a state of being fitted into the upper opening portion 14a of the lower rail 14. .

  Thereafter, when the front end portion of the seat cushion 2 is further flipped up toward the seat back, the seat link 30 further rotates in the direction of the arrow C as shown in FIG. The lock pin 36 of the inserted link lock 34 moves toward the third guide groove 30c3 (actually, with the lock pin 36 stopped, the seat link 30 moves in the direction of the arrow C around the rotation shaft 32. Rotate in the direction).

  When the lock pin 36 of the link lock 34 is fitted into the third guide groove 30c3, the link lock 34 is rotated in the direction of arrow B by the elastic force of the elastic means, and the lock pin 36 is at the upper end of the third guide groove 30c3. And will be held in that position.

  This state (the state of FIG. 5) is a state in which the seat cushion 2 is flipped up most, and the seat cushion 2 is in contact with the seat back 6 as shown in FIG. That is, FIG. 5 shows the flip-up position of the seat cushion 2, and the seat link 30 is locked by the lock pin 36 of the link lock 34. Therefore, the seat cushion 2 is also locked in the flip-up position.

  Further, when the link lock 34 is rotated from the state shown in FIG. 4 to the state shown in FIG. 5, the shape of the link lock 34 is set so that the lower edge portion of the slide restricting stopper 40 is located above the upper surfaces of the stopper plates 52 and 54. Therefore, when the lock plate release lever is operated to unlock the lock teeth 50a of the lock plate 50 with respect to the lock holes of the lower rail 14, the seat S moves to the tip-up / slide area Y located behind the seating area X. It becomes possible to move. Therefore, when the hand is released from the lock plate release lever at a desired position in the tip up / slide area Y, the lock teeth 50a of the lock plate 50 are reinserted into the lock holes of the lower rail 14, and the seat S is in the tip up state. Is locked in that position.

  As shown in FIG. 5, in the tip-up / slide area Y behind the seating area X, the slide restricting stopper 40 rides on the upper surface of the stopper plate 54, and the lower edge of the link lock 34 is the slide restricting stopper. Since it is in contact with the upper edge of 40, the link lock 34 cannot be operated by the link lock release lever. That is, the slide restriction stopper 40 acts as a slide restriction means for the sheet S and also acts as a restriction means for a link lock (chip-up) release lever.

  When the seat S located in the tip-up / slide area Y behind the seating area X is to be moved to the seating area X, the lock plate release lever is first operated, and the lock teeth 50a of the lock plate 50 with respect to the lock hole of the lower rail 14 are operated. When the lock is released, the seat S can slide forward. When the seat S reaches the seating region X, the stopper plate 54 no longer exists below the slide restricting stopper 40. Therefore, when the link lock release lever is operated to rotate the link lock 34 in the direction opposite to the arrow B. The lock pin 36 of the link lock 34 disengages the third guide groove 30c3 of the seat link 30, and the slide restricting stopper 40 is lowered against the elastic force of the torsion coil spring 48 so that the tip of the slide restricting stopper 40 is moved. It fits into the upper opening 14 a of the lower rail 14.

  Further, when a downward force is applied to the front end portion of the seat cushion 2 against the elastic force of the spiral spring 26, the seat link 30 rotates in the direction opposite to the arrow C. When the seat cushion 2 returns to the seating state, the pin 44 of the slide restriction stopper 40 is pressed again by the second projecting portion 30b of the seat link 30, and the slide restriction stopper 40 is placed in the upper opening 14a of the lower rail 14. Since the sheet S is held in the state of being inserted into the sheet S, the back and forth movement of the sheet S is restricted by the slide restriction stopper 40 and the stopper plates 52 and 54. When the lock teeth 50a of the lock plate 50 are fitted into the lock holes of the lower rail 14 at a desired position in the seating region X, the seat S is held at that position.

  If the seat S in the seating area X is to be moved forward, the same operation as the above-described rearward movement is performed, so that the slide restricting stopper 40 is placed on the upper surface of the stopper plate 52 in the tip-up / slide area Y in front of the seating area X. Will ride on. Since other actions are the same as the backward movement, the description thereof is omitted.

  The chip-up / slide type automobile seat according to the present invention operates in cooperation with each other with a few parts of the slide regulation mechanism and the chip-up mechanism, and therefore provides a chip-up / slide type automobile seat that is inexpensive and easy to assemble. It is useful to do.

It is a side view of the chip up slide type automobile seat concerning the present invention, (a) shows a seating field and (b) shows a chip up slide field. The tip-up / sliding mechanism in a state where the lock member release lever is not operated is shown, (a) is a front view and (b) is a side view. The tip-up / slide mechanism in a state where the link lock is rotated by operating the lock member release lever is shown, (a) is a front view and (b) is a side view. The tip-up / sliding mechanism in the middle of raising the seat cushion is shown, (a) is a front view, and (b) is a side view. The tip-up / slide mechanism in a state in which the seat cushion is completely lifted up is shown, (a) is a front view and (b) is a side view.

Explanation of symbols

2 seat cushion, 4 reclining device, 6 seat back,
8 slide device, 10 slide regulating mechanism, 12 tip-up mechanism,
14 lower rail, 14a upper opening, 16 upper rail, 18 rolling element,
20 side frame, 22 connecting shaft, 24 seat cushion frame,
26 spiral spring, 28 pins, 29 seat back frame,
30 seat link, 30a first protrusion, 30b second protrusion,
30c guide groove, 30c1 first guide groove, 30c2 second guide groove,
30c3 third guide groove, 32 rotating shaft, 34 link lock, 36 pin,
38 pins, 40 slide restriction stoppers, 42 stopper guides,
42a guide groove, 44 pressing pin, 46 spring locking pin,
48 torsion coil spring, 50 lock plate, 50a lock teeth,
S Car seat, X seating area, Y Tip up / slide area.

Claims (8)

A seat cushion, a seat back provided at the rear of the seat cushion, a slide device for sliding the seat cushion in the longitudinal direction of the vehicle body, and a tip-up for jumping up the seat cushion toward the seat back A chip-up / sliding vehicle seat equipped with a mechanism,
The slide device is configured to be able to slide the seat in a seating area where the seat cushion can be seated, and a tip-up slide area where the seat cushion is kept flipped up toward the seat back. And a slide restricting mechanism for holding the seat in the seating area, and the slide restricting mechanism is engaged with the slide restricting stopper attached to the slide device so as to be movable up and down, and the slide restricting stopper. And a stopper member for restricting the sliding of the seat, and the tip-up mechanism is constituted by a link member and a lock member which are attached to the seat cushion and engage with the slide restricting stopper, and the lock By locking the link member with a member, the seat cushion The sliding restriction stopper can be engaged with the stopper member by holding at least one of the link member and the locking member against the sliding restriction stopper in the seating region. A tip-up / slide type automobile seat characterized in that the seat is held in the seating area.   The lock member is connected to a lock member release lever, and the operation of the lock member release lever is restricted by bringing the slide restriction stopper into contact with the lock member when the seat cushion is flipped up. The chip-up / sliding vehicle seat according to claim 1, wherein   The link member and the lock member are rotatably attached to a seat cushion frame, and the link member has a guide groove, while the lock member has a lock pin loosely inserted in the guide groove. The lock pin is inserted into the first position to hold the seat cushion in the seated state, while the lock pin is inserted into the second position of the guide groove to bring the seat cushion into the flip-up state. The tip-up slide type automobile seat according to claim 1 or 2, wherein the seat is held.   The guide groove includes a first guide groove, a second guide groove extending in a direction substantially orthogonal to the first guide groove, and a third guide groove extending substantially parallel to the second guide groove, 4. The tip-up slide type automobile seat according to claim 3, wherein the position 1 is the first guide groove and the second position is the third guide groove.   The link member engages with the slide restricting stopper to hold the seat in the seating region when the lock pin is fitted into the first guide groove. Tip-up slide type automotive seat.   6. The seat according to claim 4, wherein when the lock pin is fitted into the second guide groove, the lock member is engaged with the slide restricting stopper to hold the seat in the seating area. The chip-up slide type automobile seat as described.   When the lock pin is fitted into the third guide groove, the slide restricting stopper is disengaged from the stopper member so that the seat can slide into the tip-up / slide area. Item 7. The tip-up / sliding vehicle seat according to any one of Items 4 to 6. The slide device includes a lower rail fixed to a vehicle body floor and an upper rail slidably attached to the lower rail, and the slide restriction stopper is attached to the upper rail, while the stopper member is the lower rail. The chip-up / sliding vehicle seat according to claim 1, wherein the tip-up / sliding vehicle seat is attached to the seat.

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