JP2010083343A - Seat arrangement apparatus of seat of automobile - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To construct the two modes of walking-in of and folding-down for occupants on the rear side in a simple structure by using a seat arrangement apparatus in a normal form as a base, and reducing the entire seat weight, while preventing erroneous operation and providing ease of operation. <P>SOLUTION: The walking-in mechanism, the folding-down mechanism, a switch-over mechanism between the walking-in mechanism and the folding-down mechanism, and a lever for unlocking a reclining lock and the switch-over mechanism operated by the occupant on the rear side are centralized and attached to a plate face of a cushion bracket 6. <P>COPYRIGHT: (C)2010,JPO&amp;INPIT

Description

  The present invention relates to a seat arrangement device for an automobile seat that includes a walk-in mechanism and a fall-down mechanism, based on a seat arrangement device in a normal form of a reclining / sliding automobile seat.

  In general, an automobile seat has a seat back reclining mechanism assembled between a cushion bracket and a back bracket, an operation lever for unlocking the reclining mechanism is provided on one side of the seat cushion, and a slide rail is provided on the vehicle floor. It is installed between the seat cushion and is equipped with an operation lever that unlocks the slide rail on the lower side of the seat cushion, and is configured as a reclining and sliding type.

  Conventionally, the lock of the reclining mechanism is unlocked to tilt the seat back forward, the walk-in mechanism that unlocks the lock of the slide rail in conjunction with the forward tilt of the seat back, and the slide rail is kept in a locked state, In order to assemble a fall-down mechanism that folds the seat back on the seat cushion, there has been proposed one in which a dedicated operation lever is installed at the shoulder of the seat back (Patent Document 1).

  When installing the operation levers of the walk-in mechanism and fall-down mechanism on the shoulders of the seat back like the conventional ones, various related members including individual operation levers, the walk-in mechanism, and the pull wires that connect with the fall-down mechanism Must be assembled on the seat back side. This increases the number of parts on the seat back side and increases the weight of the entire seat.

In addition, when operating the lever to fall down the seat back, if the hand is released from the operation lever at the initial stage of the forward tilt of the seat back, there is a risk of malfunction that causes the seat back to enter a walk-in state. . In addition, in the operation from the rear side, it is necessary to select the two levers with consciousness, and it is difficult to perform an intuitive operation, which is not convenient.
Special table 2002-501852

  The present invention is based on a seat arrangement device of the normal form, and the rear occupant is configured with a simple structure that can be operated in a simple manner with no accidental operation in the walk-in and fall-down modes. It is an object of the present invention to provide a seat arrangement device for an automobile seat that can be realized.

In the invention according to claim 1 of the present application, the seat back reclining mechanism is assembled between the cushion bracket and the back bracket, an operation lever for unlocking the reclining mechanism is provided on one side of the seat cushion, and a slide rail is provided. Installed between the body floor and the seat cushion, and equipped with an operation lever on the lower side of the seat cushion to unlock the slide rail,
Since the reclining mechanism lock is unlocked by lever operation by the seated person, the seating posture of the seat back can be adjusted, or the seat back can be assembled on the seat cushion so that it can be moved forward, or the slide rail can be locked by the seated person. Because it is unlocked by lever operation, based on a normal form seat arrangement device that assembles the whole seat so that the position of the whole seat can be adjusted in the longitudinal direction with a slide rail,
A walk-in mechanism that unlocks the lock of the reclining mechanism to tilt the seat back forward and unlocks the slide rail lock in conjunction with the forward tilt of the seat back;
A fall-down mechanism that folds the seat back over the seat cushion while keeping the slide rail locked,
A switching operation mechanism between a walk-in mechanism and a fall-down mechanism,
The actuators for unlocking the reclining lock operated by the rear occupant and for the switching operation mechanism are assembled and arranged in a concentrated manner on the plate surface of the cushion bracket.

In the invention according to claim 2 of the present application, a reclining mechanism of the seat back and a spiral spring that urges the seat back in the forward tilting direction are assembled between the cushion bracket and the back bracket, and are connected to the operating shaft of the reclining mechanism. An operating lever for unlocking the lock is provided on one side of the seat cushion, a slide rail is installed between the vehicle floor and the seat cushion, and an operating lever for unlocking the slide lock is provided on the lower side of the seat cushion. ,
Since the reclining mechanism lock is unlocked by lever operation by the seated person, the seating posture of the seat back can be adjusted, or the seat back can be assembled on the seat cushion so that it can be moved forward, or the slide rail can be locked by the seated person. Because it is unlocked by lever operation, based on a normal form seat arrangement device that assembles the whole seat so that the position of the whole seat can be adjusted in the longitudinal direction with a slide rail,
A first actuator extending from the operation lever for unlocking the reclining lock to the rear of the seat cushion;
The first arm is directed to the front of the seat, the second arm is directed to the upper side of the seat, the substantially middle abdomen is pivotally attached to the plate surface of the cushion bracket by a support shaft, and a pull wire for unlocking the slide lock is attached to the first arm. The connecting pin is attached to the front end side of the part, the swinging piece extends from the upper end side of the second arm part above the seat, and the bearing is attached to the support shaft. The restriction pin extends from one side of the cushion bracket to the other side. Equipped with a crank arm that is planted and fixed on the free end side of the swinging piece,
An intermediate bent hole, a rear hole that opens according to the rotation trajectory of the back bracket around the operation axis of the reclining mechanism, and an intermediate bent hole that deviates from the back bracket rotation trajectory. A guide hole that is continuous with the front hole that opens is provided on the plate surface of the cushion bracket, and the regulating pin of the swinging piece is protruded from one side of the cushion bracket to the other side, and is inserted into the guide hole.
Further, on the shaft end side where the regulating pin of the swinging piece protrudes from the guide hole, the hook portion that guides from the curved hole portion of the guide hole to the front hole portion faces the seat upward, and the bent side of the substantially middle part is the plate of the cushion bracket. A hook is mounted on the surface with a support shaft, and the hook portion is supported by a spring so that it can be displaced in the locking direction of the regulating pin or in the direction away from the regulating pin, and the hook portion is moved from the curved hole portion of the guide hole to the front hole portion. Provided with an operation lever for switching operation provided by extending the actuator of 2 to the rear of the seat cushion,
When the rear occupant unlocks the reclining lock with the first actuator while the swing pin restricting pin is positioned in the curved hole portion of the guide hole, the back bracket is moved to the swing pin restricting pin. Is pushed and moved from the curved hole portion of the guide hole to the hole end of the rear hole portion, and the restriction pin locks the back bracket in a forward inclined state at the hole end of the rear hole portion, and the crank arm holds the swing piece. The walk-in mechanism that rotates in the pulling direction of the pulling wire through the pulling wire and unlocks the slide lock via the pulling wire connected to the front end side of the first arm portion can be operated.
The rear occupant moves the hook part of the operating lever from the curved hole part of the guide hole to the front hole part by the second actuator, and the hook part of the operating lever moves the regulating pin of the swing piece to the curved hole part of the guide hole. When the rear occupant unlocks the reclining lock with the second actuator while being locked to the hole end of the front hole, the back bracket does not come into contact with the regulating pin of the swinging piece. The fall-down mechanism for folding the seat back on the seat cushion is assembled to be operable.

The invention according to claim 3 of the present application includes: an upper arm portion extending obliquely downward from the upper end side facing the front of the seat toward the rear of the seat; a bent portion bending toward the front of the seat from the lower end side of the upper arm portion; For reclining lock unlocking, which is composed of a lower bay extending diagonally upward and forward, with the upper arm closer to the upper end of the lower part of the operating shaft protruding from the reclining mechanism and mounted to the cushion bracket plate surface with a support shaft. With an operating lever
The front end is fixedly attached to the protruding end of the operating shaft, the operating arm that extends toward the rear of the seat, the upper end is pivotally connected to the rear end of the operating arm with a support shaft, and the lower end is supported by the bent portion of the operating lever. It has a hanging bar that is connected to the bearing by a shaft,
Supports the transfer bar at four points from the operating shaft of the reclining mechanism, the support shaft of the operation lever, the connection support shaft to the operation arm, and the connection support shaft to the operation lever.
The first operating element is provided so as to extend rearward of the seat cushion from substantially the middle of the transfer bar.

In the invention according to claim 4 of the present application, one spring hanging piece is provided upright from the rear side edge of the hook portion adjacent to the bent side portion of the operating lever, and the other spring hanging piece is provided on the bent side portion of the operating lever. Provided upright from the plate surface of the cushion bracket below
The hook part can be spring-biased in the direction away from the restriction pin below the support lever shaft, and the hook part can be spring-biased in the lock direction of the restriction pin above the support lever shaft. It is characterized in that a single tension coil spring is mounted between the spring hanging pieces.

  The invention according to claim 5 of the present application is characterized in that the crank arm and the operating lever are mounted on the same axis of a common support shaft and mounted on both sides of the cushion bracket plate.

  The invention according to claim 6 of the present application is characterized in that the second operating element that is substantially aligned with the first operating element is provided in the operating lever for switching operation when the restriction pin is locked by the hook portion. .

  According to the first aspect of the present invention, since the reclining mechanism is unlocked by a lever operation by a seated person, the seating posture of the seat back can be adjusted or the seat back can be put forward on the seat cushion. Walk-in mechanism based on a normal seat arrangement device that assembles or locks the slide rail by lever operation by a seated person so that the entire seat can be adjusted in the longitudinal direction of the vehicle with the slide rail And the fall-down mechanism, the switching-in mechanism of the walk-in mechanism and the fall-down mechanism, and the actuator for unlocking the reclining lock operated by the rear occupant and the switching-actuating mechanism are concentrated on the plate surface of the cushion bracket. As a result, there is no need for related parts on the seat back side. Weight reduction can be achieved for the entire sheet can be reduced.

According to the invention according to claim 2 of the present application, the rear occupant unlocks the reclining lock with the first actuator while the regulating pin of the swinging piece is positioned in the curved hole portion of the guide hole. Along with this, the back bracket presses and moves the regulating pin of the swing piece from the curved hole portion of the guide hole to the hole end of the rear hole portion, and the restriction pin tilts the back bracket forward at the hole end of the rear hole portion. In addition to locking, the crank arm rotates in the pulling direction of the pulling wire via the swinging piece and operates the walk-in mechanism that unlocks the slide lock via the pulling wire connected to the front end side of the first arm. Possible,
The rear occupant moves the hook part of the operating lever from the curved hole part of the guide hole to the front hole part by the second actuator, and the hook part of the operating lever moves the regulating pin of the swing piece to the curved hole part of the guide hole. When the rear occupant unlocks the reclining lock with the second actuator while being locked to the hole end of the front hole, the back bracket does not come into contact with the regulating pin of the swinging piece. Since the fall-down mechanism that folds the seat back over the seat cushion is operatively assembled, the seat arrangement device is easy to operate intuitively by the operation from the rear side, is easy to use, and does not cause malfunction. Supplied as

  According to the invention according to claim 3 of the present application, the transfer bar provided with the first actuator is moved from the operation shaft of the reclining mechanism, the support shaft of the operation lever, the connection support shaft to the operation arm, and the connection support shaft to the operation lever. Since it is point-supported, the operation locus can be operated not as a rotation locus but as a substantially linear locus, so that it is easy to operate and has good usability.

  According to the invention of claim 4 of the present application, the hook portion is spring-biased in the direction away from the regulating pin over the lower part of the support lever shaft, while the hook is extended over the support lever shaft. Since one tension coil spring that can spring-bias the part in the locking direction of the restriction pin is mounted and attached, the hook part of the operating lever can be moved from the locking direction of the restriction pin or from the restriction pin by one tension coil spring. It is possible to support the spring so that it can be biased in the disengagement direction and reduce the number of parts provided in the cushion bracket, and the weight of the entire seat can be reduced.

  According to the fifth aspect of the present invention, the crank arm and the operating lever are mounted on the both sides of the cushion bracket so that the crank arm and the operating lever are mounted coaxially on a common support shaft. Along with the reduction in the number of points, the entire sheet can be reduced in weight.

  According to the invention according to claim 6 of the present application, when the restriction pin is locked by the hook portion, the second actuator that is substantially aligned with the first actuator is provided in the operation lever for switching operation. Both actuators can be operated at the same time in the fall-down state, and switching from the fall-down state to the walk-in state from the rear side can be performed without error, giving priority to escape in the event of a walk-in state. Easy to plan.

  As shown in FIG. 1, the seat arrangement device according to the illustrated embodiment is configured such that the reclining mechanism 1 for the seat back B is assembled between the cushion bracket and the back bracket, and the operation lever 2 for unlocking the reclining mechanism 1 is used as the seat cushion. Recliner provided on one side of C, with slide rail S installed between vehicle body floor F and seat cushion C, and operating lever 3 on the lower side of seat cushion C for unlocking slide rail S -It is assembled based on a seat arrangement device for sliding seats.

  The seat arrangement device that serves as the base unlocks the reclining mechanism 1 by lever operation by a seated person, so that the seating posture of the seat back B can be adjusted or the seat back B can be put forward on the seat cushion C. Or the lock of the slide rail S is unlocked by a lever operation by a seated person, so that the entire seat is assembled by the slide rail S so that the position of the seat can be adjusted in the longitudinal direction.

  As an example of the reclining mechanism 1, as shown in FIG. 2, as shown in FIG. 2, a fixed housing 10 that is fixed to the cushion bracket and a movable cover 11 that is fixed to the back bracket are provided to be opposed to each other. The main part is composed of an operating shaft 12 to be bearing and a rotating cam 13 fitted and fixed on the axis of the operating shaft 12.

  In the reclining mechanism 1, a pair of left and right bosses 14 a, 14 b, 15 a, 15 b, 16 a, 16 b are provided inside the fixed housing 10. The movable cover 11 is provided with gear teeth 17 along the inner circumference of the wall. Lock gears 18a to 18c are slidably disposed between the bosses 14a, 14b, 15a, 15b, 16a, and 16b. The lock gears 18a to 18c are tension supported by a return spring (not shown) so as to always contact the outer peripheral edge of the rotating cam 13.

  The lock gears 18 a to 18 c are urged by torsion coil springs 18 d to 18 f so as to be always engaged with the gear teeth 17 of the movable cover 11 by being pushed by the rising edge of the rotary cam 13. In the meshed state of the lock gears 18a to 18c, the reclining mechanism 1 is kept locked. Further, when the lock gears 18 a to 18 c are opposed to the lower edge of the rotary cam 13 by the rotation of the operation shaft 12, the meshing is released from the gear teeth 17 of the movable cover 11 and the reclining mechanism 1 is unlocked.

  As shown in FIGS. 3 and 4, the seat back B is urged and supported in the forward tilt direction toward the seat cushion C by assembling the spiral spring 4 between the cushion bracket 5 and the back bracket 6. As the cushion bracket 5, a cushion bracket 5 formed continuously on the rear side of the cushion side frame is provided. Alternatively, a separate cushion bracket may be attached and fixed to the rear side of the cushion side frame.

  The reclining mechanism 1 is provided between the left and right cushion brackets 5 and the back bracket 6. Moreover, it is assembled | attached integrally by the connection shaft 19 (refer FIG. 4) spanning between each operating shaft 12, and it attaches so that a lock unlocking is possible by the operation lever 2 (refer FIG. 1) with which one side part of the seat cushion S is equipped. Yes.

  Based on the above-described normal-type seat arrangement device (see FIG. 1), the seat back B is tilted forward by unlocking the lock of the reclining mechanism 1, and the slide rail S of the slide rail S is interlocked with the forward tilt of the seat back B. A walk-in mechanism that unlocks the lock and a fall-down mechanism that keeps the slide rail S in the locked state and folds the seat back B over the seat cushion C is assembled and arranged on the plate surface of the cushion bracket 5. ing.

  The operation lever 2 for unlocking the reclining lock and the pull wires 70 and 71 for unlocking the slide lock of the slide rail S as shown in FIGS. 3 and 4 are connected to the outer surface of the cushion bracket 5. A crank arm 7 is provided.

  The operation lever 2 includes an upper arm portion 20a extending obliquely downward from the upper end side facing the front of the seat toward the rear of the seat, a bent portion 20b bending from the lower end side of the upper arm portion 20a toward the front of the seat, and the front of the seat from the bent portion 20b. It is assembled with a lever body 20 that becomes a lower bay portion 20c extending obliquely upward. The lever main body 20 is assembled by being attached to the plate surface of the cushion bracket 5 by a support shaft 20d below the shaft projecting end of the operating shaft 12 projecting from the reclining mechanism 1 near the upper end of the upper arm portion 20a.

  The lever main body 20 has a front end fixedly attached to the projecting end of the operating shaft 12, and an operating arm 21 extending toward the rear of the seat and an upper end supported by a support shaft 22a near the rear end of the operating arm 21. A spanning bar 22 having a lower end pivotally connected to a bent portion 20b of the lever body 20 by a support shaft 22b is assembled.

  From the configuration described above, the transfer bar 22 is supported at four points by the operating shaft 12 of the reclining mechanism 1, the support shaft 20 d of the lever body 20, the connection support shaft 22 a for the operation arm 21, and the connection support shaft 22 b for the lever body 20. . Further, a first actuator 23 for unlocking the reclining lock is provided to extend rearward of the seat cushion S from a substantially middle part of the transfer bar 22.

  The above-described operation lever 2 is provided as an element for unlocking the reclining lock because the operation lever 2 is pulled upward using the front end side of the lower bay 20c as a handle portion. In addition, the tension coil spring 24 is stretched and mounted between the spring hanging piece 20e standing from the rear side edge of the bent portion 20b and the spring hanging piece 22c standing from the rear side edge of the hanging bar 22, so that the lever can be operated. The reclining mechanism 1 is assembled so as to return to the locking direction after release.

  The crank arm 7 is assembled by attaching the first arm portion 72a to the front of the seat, the second arm portion 72b to the top of the seat, and the substantially middle abdomen 72c pivotally supported on the plate surface of the cushion bracket 5 by the support shaft 72d. It has been.

  The crank arm 7 is provided with two pull wires 70 and 71 connected to the front end side of the first arm portion 72a so as to unlock the slide locks assembled to the slide rails S on both the left and right sides. . Further, the swing piece 73 extends from the upper end side of the second arm portion 72b to the upper side of the seat, and is supported by a support shaft 73a. A restriction pin 74 having a length extending from one side surface to the other side surface of the cushion bracket 5 is planted and fixed to the swing end 73 on the free end side.

  A guide hole 50 through which the regulation pin 74 of the swing piece 73 is inserted is provided on the plate surface of the cushion bracket 5. As shown in FIG. 5, the guide hole 50 has an intermediate bent hole portion 50a and a rotation trajectory of the back bracket 6 around the operation shaft 12 (see FIG. 3) of the reclining mechanism from the intermediate bent hole portion 50a (see FIG. 5). The back hole 50b that opens according to the middle dotted line) and the front hole 50c that opens away from the rotation trajectory of the back bracket 6 from the middle curved hole 50a are provided as continuous openings. .

  The restricting pin 74 of the swing piece 73 is provided by a tension coil spring 75 that is stretched between the spring hook piece 73 b that rises from the lower end edge of the swing piece 73 and the spring hook piece 72 e that stands from the front side edge of the crank arm 7. The bent hole portion 50a of the guide hole 50 is tension-supported so as to be set at the neutral position.

  As shown in FIGS. 6 and 7, an operating lever 8 for switching operation is provided on the inner side of the plate surface of the cushion bracket 5 described above. In order to reduce the number of parts, the actuating lever 8 is mounted on the same shaft as a common support shaft 72d that supports the crank arm 7 in a bearing.

  As the actuating lever 8, the hook portion 80a for guiding the regulating pin 74 of the swing piece 73 from the bent hole portion 50a of the guide hole 50 to the front hole portion 50c is directed upward of the seat, and the substantially middle bent side portion 80b is a cushion bracket. And a second actuator 81 that moves the hook portion 80a from the bent hole portion 50a of the guide hole 50 to the front hole portion 50c and extends rearward of the seat cushion. Is provided.

  The actuating lever 8 includes a spring hook piece 80d that stands up from the rear edge of the hook portion 80a adjacent to the bent side portion 80b, and a spring hook piece 51 that stands up from the plate surface of the cushion bracket 5 below the bent side portion 80b. Is supported by a single tension coil spring 82 spanning between them. With respect to the actuating lever 8, the regulating pin 74 is formed with a small diameter as a locking portion by the hook portion 80a, and the shaft portions at both ends are large as a fixing portion with respect to the swing piece 73 and an outer stopper portion of the hook portion 80a. The one formed in a diameter is provided (see FIG. 4).

  Since the tension coil spring 82 reduces the number of parts, as shown in FIG. 8, the hook portion 80a is biased outwardly from the support shaft 72d of the actuating lever 8 in the direction away from the restricting pin 74, while operating. The hook portion 80a is mounted so as to be set so as to be spring-biasable in the locking direction of the restriction pin 72d over the support shaft 72d of the lever 8.

  In the configuration described above, the first actuator 23 can be a stepping petal that the rear occupant steps down with a foot, and the second actuator 81 can be provided as a handle portion that the rear occupant pulls up by hand. . Further, an overhang bar 61 having a notch edge 60 can be provided according to the rotation trajectory of the back bracket 6 (see FIG. 3).

  In the seat arrangement device for an automobile seat configured as described above, a walk-in mechanism, a fall-down mechanism, a switching operation mechanism between the walk-in mechanism and the fall-down mechanism, and an unlocking of a reclining lock operated by a rear occupant. In addition, since the actuators for the switching operation mechanism are assembled and concentrated on the plate surface of the cushion bracket, the related parts on the seat back side are unnecessary, the number of parts can be reduced, and the weight of the entire seat can be reduced.

  As shown in FIG. 9, the seat arrangement device for the vehicle seat unlocks the reclining mechanism 1 to tilt the seat back B forward and locks the slide rail S in conjunction with the forward tilt of the seat back B. When the walk-in operation for unlocking is performed, the rear occupant steps down the first actuator 23 with his / her foot.

  As the first operating element 23 is stepped down, as shown in FIG. 10a, the transfer bar 22 is pushed down and the operating arm 21 pivots downward, so that the operating shaft 12 rotates. Thereby, the lock of the reclining mechanism 1 is unlocked, and the seat back B is tilted forward by the spiral spring 4.

  When the seat back B is tilted forward by the spiral spring 4, the restriction pin 74 of the swing piece 73 is positioned in the bent hole portion 50a of the guide hole 50, so that the notch edge 60 of the back bracket 6 swings as shown in FIG. The restriction pin 74 of the moving piece 73 is pressed and moved from the bent hole portion 50a of the guide hole 50 to the hole end of the rear hole portion 50b, and the movement of the restriction pin 74 stops at the hole end of the rear hole portion 50b, whereby the back bracket 6 is moved. At the hole end of the rear hole portion 50b, it is locked in a forward inclined state.

  At the same time, since the crank arm 7 rotates in the pulling direction of the pull wires 70 and 71 via the swing piece 73, the slide lock is connected via the pull wires 70 and 71 connected to the front end side of the first arm portion 72a. Pull to unlock.

  When the depression of the first actuator 23 is released, as shown in FIG. 10B, the lever body 20, the transfer bar 22, and the operating arm 21 are returned to the original state by the tension coil spring 24, so that the reclining mechanism 1 is locked. It becomes a state. Thereby, the lock of the slide rail S is unlocked in conjunction with the forward tilt of the seat back B, and a walk-in operation of moving the entire seat forward in the vehicle by the slide rail S can be performed.

  The stepping-down operation of the first actuator 23 is performed by using the transfer bar 22 provided with the first actuator 23 as the operation shaft 12 of the reclining mechanism 1, the support shaft 20 d of the operation lever 2, the connection support shaft 22 a to the operation arm 21, Since the operation lever 2 is supported at four points from the connecting support shaft 22b with respect to the operation lever 2, the operation locus can be operated in a substantially linear locus instead of a rotation locus. Therefore, the operation lever 2 by the first actuator 23 is easy to operate and easy to use. It is well equipped.

  In order to return the entire seat to the original seating posture from the walk-in state, the first operator 23 may be stepped down as described above.

  When the slide rail S is kept in the locked state as shown in FIG. 11 and a fall-down operation is performed in which the seat back B is folded over the seat cushion C, the rear occupant is in the second position as shown in FIG. The operating lever 8 is pulled up and rotated by holding the operating element 81 by hand.

  As a result, the hook portion 80a of the operating lever 8 moves from the bent hole portion 50a of the guide hole 50 to the front hole portion 50c, so that the regulating pin 74 of the swing piece 73 is moved forward from the bent hole portion 50a of the guide hole 50. It will be in the state latched in the hole end of the part 50c. For this reason, the regulating pin 74 of the swing piece 73 moves from the bent hole portion 50 a of the guide hole 50 to the hole end of the front hole portion 50 c that deviates from the rotation locus of the back bracket 6.

  The actuating lever 8 is shown in FIG. 12b from a state in which the tension coil spring 82 is spring-biased in a direction away from the restricting pin 74 so that the tension coil spring 82 is below the support shaft 72d of the actuating lever 8 (see FIG. 8). Further, the hook portion 80a is spring-biased in the locking direction of the restricting pin 74 over the support shaft 72d of the operating lever 8, so that the restricting pin 74 is locked by the hook portion 80a.

  When the rear occupant depresses the first actuator 23 from the state in which the regulating pin 74 of the swing piece 73 is locked by the hook portion 80a of the operating lever 8, the lock of the reclining mechanism 1 is unlocked. Thus, the notch edge 60 of the back bracket 6 does not come into contact with the regulating pin 74 of the swing piece 73, and a fall-down operation can be performed in which the seat back B is folded over the seat cushion C.

    When the depression of the first actuator 23 is released, as shown in FIG. 12c, the lever main body 20, the hanging bar 22, and the operating arm 21 are returned to the original state by the tension coil spring 24, so that the reclining mechanism 1 is locked. become. Thereby, the back part of the seat back B can be used stably as a luggage storage area.

  From the above-described mechanisms, both the first actuator 23 and the second actuator 81 are easy to operate intuitively by operation from the rear side, are easy to use, and do not cause malfunction. Provided as a device.

  In the fall-down state, the second actuator 81 in which the restriction pin 74 by the hook portion is locked by the hook portion 80a is set to be substantially aligned with the first actuator 23. For this reason, it is possible to operate both the actuators 23 and 81 in the fall-down state at the same time, and switching from the fall-down state to the walk-in state from the rear side can be performed reliably without any erroneous operation. Escape etc. can be done easily with priority.

  It is possible to change the design of the operation lever 8 for the switching operation described above to hold-down priority instead of setting it to walk-in priority, and design the function appropriately according to the frequency of use. Can do.

It is explanatory drawing which shows the seat for motor vehicles provided with the seat arrangement apparatus which concerns on this invention in a seating attitude | position. It is explanatory drawing which shows the internal structure of a general reclining mechanism. It is explanatory drawing which shows the seat arrangement apparatus which concerns on this invention from the board surface outer side of a cushion bracket. FIG. 4 is a perspective view showing the seat arrangement device of FIG. It is explanatory drawing which shows the relationship between the control pin and guide hole in the seat arrangement apparatus of FIG. It is explanatory drawing which shows the seat arrangement apparatus of FIG. 3 from the board surface inner side of a cushion bracket. FIG. 7 is a perspective view showing the seat arrangement device of FIG. It is explanatory drawing which shows the relationship between the action | operation lever and switching pin for switching operation in the seat arrangement apparatus of FIG. It is explanatory drawing which shows a vehicle seat provided with the seat arrangement apparatus which concerns on this invention in a walk-in state. It is explanatory drawing which shows the seat arrangement apparatus of FIG. 3 in a walk-in operation state. It is explanatory drawing which shows the seat arrangement apparatus of FIG. 10a in a lever operation cancellation | release state. It is explanatory drawing which shows the seat arrangement apparatus of FIG. 3 in a walk-in state. It is explanatory drawing which shows the seat arrangement apparatus of FIG. 3 in a hold down operation state. It is explanatory drawing which shows the seat arrangement apparatus of FIG. 6 in a holddown operation state. It is explanatory drawing which shows the seat arrangement apparatus of FIG. 12a in a lever operation cancellation | release state.

Explanation of symbols

B Seat back C Seat cushion S Slide rail 1 Reclining mechanism 2 Reclining lock operating lever 12 Reclining lock operating shaft 20a Actuating lever upper arm 20b Acting lever bent portion 20c Acting lever bent portion 20d Acting lever support shaft 21 Actuating Arm 22 Hanging bar 22a Linking support shaft 22b for the operating bar with respect to the operating arm Connecting support shaft 23 for the passing bar with respect to the operating lever First actuator 3 Slide lever operating lever 4 Spiral spring 5 Cushion bracket 50 Guide hole 50a Guide Curved hole portion 50b Back hole portion 50c of guide hole Front hole portion 6 of guide hole Back bracket 60 Notch edge 61 of back bracket Overhang rod 7 Crank arm 70, 71 Pull wire 72a for unlocking slide lock Crank arm first arm portion 72b Crank arm second arm portion 73c Crank arm substantially middle portion 73d Crank arm support shaft 73 Oscillating piece 73a Oscillating piece support shaft 74 Restriction pin 75 Tension coil spring 8 For switching operation Actuating lever 80a Actuating lever hook 80b Actuating lever bent side 81 Second actuating element 82 Tension coil spring

Claims (6)

The seat back reclining mechanism is assembled between the cushion bracket and the back bracket, and an operation lever for unlocking the reclining mechanism is provided on one side of the seat cushion, and a slide rail is installed between the vehicle floor and the seat cushion. And an operation lever for unlocking the slide rail lock is provided on the lower side of the seat cushion,
Since the reclining mechanism lock is unlocked by lever operation by the seated person, the seating posture of the seat back can be adjusted, or the seat back can be assembled on the seat cushion so that it can be moved forward, or the slide rail can be locked by the seated person. Because it is unlocked by lever operation, based on a normal form seat arrangement device that assembles the whole seat so that the position of the whole seat can be adjusted in the longitudinal direction with a slide rail,
A walk-in mechanism that unlocks the lock of the reclining mechanism to tilt the seat back forward and unlocks the slide rail lock in conjunction with the forward tilt of the seat back;
A fall-down mechanism that folds the seat back over the seat cushion while keeping the slide rail locked,
A switching operation mechanism between a walk-in mechanism and a fall-down mechanism,
A seat arrangement device for an automobile seat, wherein an actuator for unlocking a reclining lock operated by a rear occupant and an actuator for a switching operation mechanism are assembled and concentrated on a plate surface of a cushion bracket. The seat back reclining mechanism and a spiral spring that urges the seat back in the forward tilting direction are assembled between the cushion bracket and the back bracket. The slide rail is installed between the vehicle body floor and the seat cushion, and an operation lever for unlocking the slide lock is provided on the lower side of the seat cushion.
Since the reclining mechanism lock is unlocked by lever operation by the seated person, the seating posture of the seat back can be adjusted, or the seat back can be assembled on the seat cushion so that it can be moved forward, or the slide rail can be locked by the seated person. Because it is unlocked by lever operation, based on a normal form seat arrangement device that assembles the whole seat so that the position of the whole seat can be adjusted in the longitudinal direction with a slide rail,
A first actuator extending from the operation lever for unlocking the reclining lock to the rear of the seat cushion;
The first arm is directed to the front of the seat, the second arm is directed to the upper side of the seat, the substantially middle abdomen is pivotally attached to the plate surface of the cushion bracket by a support shaft, and a pull wire for unlocking the slide lock is attached to the first arm. The connecting pin is attached to the front end side of the part, the swinging piece extends from the upper end side of the second arm part above the seat, and the bearing is attached to the support shaft. The restriction pin extends from one side of the cushion bracket to the other side. Equipped with a crank arm that is planted and fixed on the free end side of the swinging piece,
An intermediate bent hole, a rear hole that opens according to the rotation trajectory of the back bracket around the operation axis of the reclining mechanism, and an intermediate bent hole that deviates from the back bracket rotation trajectory. A guide hole that is continuous with the front hole that opens is provided on the plate surface of the cushion bracket, and the regulating pin of the swinging piece is protruded from one side of the cushion bracket to the other side, and is inserted into the guide hole.
Further, on the shaft end side where the regulating pin of the swinging piece protrudes from the guide hole, the hook portion that guides from the curved hole portion of the guide hole to the front hole portion faces the seat upward, and the bent side of the substantially middle part is the plate of the cushion bracket. A hook is mounted on the surface with a support shaft, and the hook portion is supported by a spring so that it can be displaced in the locking direction of the regulating pin or in the direction away from the regulating pin, and the hook portion is moved from the curved hole portion of the guide hole to the front hole portion. Provided with an operation lever for switching operation provided by extending the actuator of 2 to the rear of the seat cushion,
When the rear occupant unlocks the reclining lock with the first actuator while the swing pin restricting pin is positioned in the curved hole portion of the guide hole, the back bracket is moved to the swing pin restricting pin. Is pushed and moved from the curved hole portion of the guide hole to the hole end of the rear hole portion, and the restriction pin locks the back bracket in a forward inclined state at the hole end of the rear hole portion, and the crank arm holds the swing piece. The walk-in mechanism that rotates in the pulling direction of the pulling wire through the pulling wire and unlocks the slide lock via the pulling wire connected to the front end side of the first arm portion can be operated.
The rear occupant moves the hook part of the operating lever from the curved hole part of the guide hole to the front hole part by the second actuator, and the hook part of the operating lever moves the regulating pin of the swing piece to the curved hole part of the guide hole. When the rear occupant unlocks the reclining lock with the second actuator while being locked to the hole end of the front hole, the back bracket does not come into contact with the regulating pin of the swinging piece. 1. A seat arrangement device for an automobile seat, wherein a fall-down mechanism for folding a seat back on a seat cushion is operatively assembled. An upper arm portion extending obliquely downward from the upper end side facing the front of the seat toward the rear of the seat, a bent portion bending toward the front of the seat from the lower end side of the upper arm portion, and a lower bay portion extending obliquely upward from the bent portion to the front of the seat It is provided with an operation lever for unlocking the reclining lock that is mounted on the plate surface of the cushion bracket below the shaft protruding end of the operating shaft protruding from the reclining mechanism at the upper end of the upper arm portion with a support shaft.
The front end is fixedly attached to the protruding end of the operating shaft, the operating arm that extends toward the rear of the seat, the upper end is pivotally connected to the rear end of the operating arm with a support shaft, and the lower end is supported by the bent portion of the operating lever. It has a hanging bar that is connected to the bearing by a shaft,
Supports the transfer bar at four points from the operating shaft of the reclining mechanism, the support shaft of the operation lever, the connection support shaft to the operation arm, and the connection support shaft to the operation lever.
The seat arrangement device for an automobile seat according to claim 2, wherein the first actuator is provided so as to extend rearward of the seat cushion from substantially the middle of the transfer bar. One spring hanging piece is provided upright from the rear side edge of the hook portion close to the bent side portion of the operating lever, and the other spring hanging piece is below the bent side portion of the operating lever from the plate surface of the cushion bracket. Established,
The hook part can be spring-biased in the direction away from the restriction pin below the support lever shaft, and the hook part can be spring-biased in the lock direction of the restriction pin above the support lever shaft. 3. The seat arrangement device for an automobile seat according to claim 2, wherein a single tension coil spring is mounted between each spring hanging piece.   3. The seat arrangement device for an automobile seat according to claim 2, wherein the crank arm and the operating lever are mounted on the same axis of a common support shaft and mounted on both sides of the cushion bracket plate.   3. The automobile seat according to claim 2, wherein when the restriction pin is locked by the hook portion, the second actuator that is substantially aligned with the first actuator is provided on the operation lever for switching operation. Seat arrangement device.

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