JP2007118730A - Tip-up seat for vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To realize a purpose to improve operability and to improve performance of a tilt function without complicating constitution, etc. <P>SOLUTION: A motor 12 driven and controlled by specified switch operation is arranged in a seat cushion 16 by fixing it on a seat cushion frame 14, and a driving shaft 28 is axle-driven in a direction corresponding to the rotating direction of a motor output end by motive power transmission of the motor through a motive power transmission means against the driving shaft 28 in parallel with a pivotal shaft 22 to be an swing center of this seat cushion. Thereafter, a support link 40 is integrally provided on this driving shaft 28, and it is possible to secure swinging of the seat cushion 16 between a lowering position by motive power of the motor 12 and a spring-up position by erecting a supporting link 42 between a head end part of this support link and a specified position of a base bracket 20 by pivotally supporting each of its end parts. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention provides a tip-up seat for a vehicle that has a folded-up state of the seat cushion in the seat back direction, and in particular, a tilt function that allows the tilt angle of the seat cushion at a seatable position to be adjusted and set appropriately. The present invention relates to a tip up seat for a vehicle.

  A flip-up type folding seat with the seat cushion flipping up in the seat back direction, the so-called tip-up seat, is known as a rear seat for one-box vehicles and multi-purpose vehicles that enable expansion arrangements for luggage compartments, etc. It has been.

  For example, as disclosed in Japanese Patent Application Laid-Open No. 2003-118436, etc., this type of tip-up seat is generally manually operated to perform unlocking operation on the locking means and swinging operation on the seat cushion. It is a so-called manual operation type.In particular, in this known configuration, the tilt angle of the seat cushion at the seatable position can be adjusted and set as appropriate, so-called a tilt function is additionally provided from the lowered position. A plurality of stages of lock positions are provided in a predetermined upper range (tilt adjustment range).

  By the way, since this type of tip-up seat is provided for the purpose of expanding the cargo space, etc., it is required to slide the entire seat forward or backward after the seat cushion is flipped up. However, since this known tip-up seat is manually operated, it requires at least two steps of the work of raising the seat cushion and the sliding operation of the entire seat. .

  Further, there may be a case where a lever operation or the like is required in a narrow work space. Therefore, in this respect, the workability is inevitably deteriorated.

  In addition, the tilt mechanism provided in this known tip-up seat adjusts and sets the inclination angle of the seat cushion by a plurality of stages of lock positions. Since fine adjustment cannot be performed, deterioration in performance as a tilt mechanism is inevitable.

In the lockable state of the lock means within this tilt adjustment range, the lock means is locked at a nearby lock position. Therefore, when the seat cushion is swung from the lowered position to the flip-up position, or is flipped up. When swinging from the position to the lowered position, it is necessary to maintain the unlocked state with respect to the locking means at least within the tilt adjustment range. That is, since the work is complicated, the workability is inevitably lowered in this respect.
JP 2003-118436 A

  The problems to be solved are that the operability cannot be lowered when the manual operation type is used, and that the tilt angle cannot be finely adjusted when the tilt adjustment is performed in a plurality of stages.

  A vehicle tip-up seat according to claim 1 of the present invention includes a seat cushion and a seat back that are individually supported between a pair of left and right base brackets, and a seat cushion in a seat back direction with a predetermined pivot as a fulcrum. The motor that is driven and controlled by a predetermined switch operation is disposed in the seat cushion under fixation to the seat cushion frame that forms the skeleton of the seat cushion. The drive shaft is rotated in the direction corresponding to the rotation direction of the motor output end by the power transmission of the motor via a predetermined power transmission means to the drive shaft parallel to the pivot that becomes the swing center of the seat cushion. It is supposed to be driven. A support link is integrally provided on the drive shaft, and a predetermined support link is installed between the front end of the support link and a predetermined position of the base bracket under the pivot of each end. The main feature of claim 1 is that it is possible to ensure the swing of the seat cushion between the lowered position and the raised position by the power of the motor.

  According to a second aspect of the present invention, a tip-up operation range is defined between the lowered position and the flip-up position, and a predetermined upper range from the lowered position is defined as a tilt operation range as a seatable position. The main feature is that the seat cushion is swung between the operating ranges by the tip-up switch, and the seat cushion is swung by the tilt switch within the tilt operating range.

  Since the vehicle tip-up seat according to claim 1 of the present invention uses a motor as a power source for swinging the seat cushion between the lowered position and the flipped-up position, its operability is surely improved. There are advantages.

  Further, by using a motor as a power source for the chip-up seat, it is possible to link the operation by a combination with an auto slide, and thus there is an advantage that the operability is reliably improved also in this respect. .

  Further, in the present invention, since the motor is fixed to the seat cushion frame, rattling of the motor due to vibrations or the like when the vehicle is traveling is reliably prevented. Therefore, even if the motor is used as the drive source, the advantage that discomfort to the occupant or the like due to the occurrence of abnormal noise or the like is sufficiently prevented can be obtained according to the first aspect. .

  And if it is the structure which uses a motor as the drive source, since the inclination angle of a seat cushion can be finely adjusted arbitrarily steplessly, there exists an advantage that the performance as a tilt mechanism is improved reliably.

  According to the second aspect of the present invention, the tip-up operation range and the tilt operation range are individually defined, and each operation is performed by corresponding individual switch operation. Since the tilt adjustment by the user's hand operation can be easily ensured, there is an advantage that the performance of the tip-up function and the tilt function and the operability can be further improved.

  The purpose of improving the operability and improving the performance of the tilt function can be realized without complicating the configuration.

  FIG. 1 is a schematic longitudinal sectional view of a vehicle tip-up seat 10 according to the present invention. As can be seen from FIG. 1, in the present invention, a motor 12 as a power source is fixed to a seat cushion frame 14. Originally, it is arranged in the seat cushion 16.

  As shown in FIGS. 1 and 2, the seat cushion 16 and the seat back 18 constituting the seat body of the tip-up seat 10 are individually pivotally supported and connected between a pair of left and right base brackets 20 so as to be swingable. Has been. The tip-up seat 10 is configured as a folded-up form of the seat cushion that is disposed at the rear portion of the seat cushion 16 in the seat back 18 direction with the pivot 22 serving as the pivot center as a fulcrum. (See FIG. 3).

  The pivot 24 of the seat back 18 with respect to the base bracket 20 is of a seat reclining device (not shown) that can adjust and set the inclination angle of the seat back, but the seat reclining device itself is not the gist of the present invention. Therefore, detailed description here is omitted.

  Further, as shown in the figure, the base bracket 20 is provided, for example, so as to be able to slide integrally with the upper rail of the seat slide device 26. However, since the seat slide device itself is not the gist of the present invention, Detailed description is omitted.

  In the present invention, the motor 12 is provided as described above as a power source for swinging the seat cushion 16 between the lowered position shown in FIG. 2 and the flip-up position shown in FIG. Yes.

  As shown in FIG. 1, the motor 12 is fixed to the seat cushion frame 14, for example, fixed to the side frame 14a of the seat cushion frame via a motor fixing plate (not shown). 16 is arranged. For example, the power transmission means 30 from this motor is configured so that the power can be transmitted to a drive shaft 28 that can be rotated and provided by erection between the left and right side frames 14a.

  The motor 12 used in this embodiment is a geared motor having a pinion gear 32 at the output end, but the basic structure of this geared motor is known and is also a general commercial product. The description is omitted here.

  This power transmission means 30 is a reduction gear mechanism, and its input gear 34 is meshed with the pinion gear 32 of the motor, and its output gear 36 is meshed with a sector gear 38 provided to be rotatable integrally with the drive shaft 28. Thus, the power of the motor 12 is transmitted to the drive shaft.

  With such a configuration, the input gear 34 of the power transmission means is rotated by the rotation of the pinion gear 32 accompanying the drive of the motor 12. Since the output gear 36 to which the rotational force is transmitted rotates the sector gear 38 in the corresponding direction, the drive shaft 28 is rotated in the corresponding direction, that is, rotated.

  Here, the drive shaft 28 will be described. As can be seen from FIG. 1, the drive shaft 30 is arranged so as to be parallel to the axis of the pivot 22 of the seat cushion, and is provided on the inner surface side of the side frame 14 a on the side where the motor 12 is arranged. 38 is provided so that the integral rotation is possible, and a pair of support links 40 are fixed along the outer surface of each side frame so that the integral rotation is possible. As shown in FIG. 2, in the present invention, a pair of support links 42 are installed between the distal end portion of the support link 40 and the base bracket 20 under the pivot of each end portion. Has been.

  An outline of the operation of the chip-up sheet 10 having this configuration will be described here.

  The swinging of the seat cushion 16 between the lowered position and the flip-up position of the tip-up seat 10 is performed, for example, by drive control of the motor 12 by a tip-up switch (not shown).

  An example of the tip-up switch is a one-touch switch in which the operation state is continued by a single operation. And it is preferable in terms of the work that this tip-up switch is disposed at a remote position from the tip-up seat 10 such as a vehicle body side wall or an instrument panel on the cargo compartment side.

  When the tip up switch is operated in the flip-up direction at the lowered position of the seat cushion 16 shown in FIGS. 1 and 2 which is the seating position, the motor 12 is driven in the corresponding direction, that is, the pinion gear 32 is rotated. The sector gear 38 is rotated in the clockwise direction in FIG. When the support link 40 integral with the drive shaft is rotated in the clockwise direction in FIG. 2 by the rotation of the drive shaft 28, the seat cushion 16 moves the pivot 22 by the driven link 42. As a fulcrum, a limit switch (illustrated) is swung in the direction of the arrow in FIG. 2, that is, in the flip-up direction, and when the seat cushion reaches the flip-up position shown in FIG. The motor 12 is stopped under the OFF operation.

  In addition, when the tip up switch is operated in the restoring direction with a one-touch operation in the spring-up position of the seat cushion 16 in FIG. 3, the drive shaft 28 and the support link 40 are rotated in the counterclockwise direction in FIG. Rotate. As the support link 40 rotates, the seat link 16 swings counterclockwise in the figure with the pivot 22 as a fulcrum, and the seat cushion is shown in FIGS. When the seating position is reached, the motor 12 is stopped under an OFF operation by a corresponding limit switch (not shown).

  As described above, in the vehicle tip-up seat 10 of the present invention, the motor 12 is used as a power source for swinging the seat cushion 16 between the lowered position and the flip-up position. That is, since the swing is obtained under the switch operation for the corresponding switch (chip up switch), the operability is surely improved.

  Then, by using the motor 12 as a power source for the chip-up seat 10, the operation can be linked by a combination with a seat slide device called a motor slide as a driving source. That is, by obtaining this interlocking, the swinging operation of the seat cushion 16 with respect to the tip-up seat 10 and the sliding operation are sufficient in one step of the switch operation. The operability is reliably improved.

  In the present invention, the motor 12 is fixed to the seat cushion frame 14. In other words, even if the motor 12 is used as the driving source, the motor rattle due to vibrations or the like during traveling of the vehicle is reliably prevented. Addition of discomfort to the skin is sufficiently prevented.

  Furthermore, in the present invention, the drive shaft 28 is driven to rotate under the power of the motor 12, and the support link 40 is rotated as the drive shaft is driven to rotate. Since it is sufficient that the seat cushion 16 is swung between the lowered position and the flipped-up position by the follow-up, the configuration can be sufficiently simplified.

  In the configuration using the motor 12 as the drive source as in the present invention, the stop position of the seat cushion 16 can be arbitrarily determined based on the stop of driving of the motor. Can be arbitrarily adjusted and set in a stepless manner. In other words, the tilt angle of the seat cushion 16 can be easily finely adjusted, so that the performance as a tilt mechanism is reliably improved.

  Here, FIG. 4 shows the lowered position shown in FIG. 2 described above as the a position and the flip-up position shown in FIG. 3 as the b position. Then, as shown in FIG. 4, the lowering position (a position) and the flip-up position (b position) of the seat cushion 16 are defined as the tip-up operation range α1, and predetermined upward from the lowering position (a position). A range up to a tilt upper limit position (c position), for example, is defined in advance as a tilt operation range α2 that is a seatable position, and the seat cushion swings in the tip-up operation range α1 as described above. It is also possible to perform the swing of the seat cushion within the tilt operation range α2 by a tilt switch provided separately from the tip-up switch.

  As shown in FIG. 4 as reference numeral 44, this tilt switch is disposed on the side surface of the seat cushion 16 that is easy for the seated person to operate, for example.

  According to such a configuration, since the tip-up operation with respect to the seat cushion 16 can be performed under a one-touch operation using the tip-up switch, the operability with respect to the tip-up is not deteriorated by the addition of the tilt function. Since the tilting operation (tilting operation) of the seat cushion 16 is performed within the limited range by the hand operation of the seated person, the operability in the tilt adjustment of the seat cushion is reliably improved.

  Accordingly, the performance of the tip-up function and the tilt function and the operability thereof can be further improved.

  In this embodiment, the reduction gear mechanism as a combination of various gears is embodied as the power transmission means 30 for transmitting the power from the motor 12 to the drive shaft 28. However, the power from the motor is Since it is sufficient to transmit to the drive shaft, it is not limited to this. For example, the power transmission means may be formed as a configuration including a chain means or the like.

  However, the power transmission means 30 as a reduction gear mechanism that transmits the rotational force of the pinion gear 32 of the motor to the sector gear 38 of the drive shaft can appropriately transmit the power without complicating the configuration. At the same time, since the deceleration of the seat cushion 16 can be appropriately ensured by the deceleration, the power transmission performance and the operation performance of the seat cushion are reliably improved.

  Further, in this embodiment, the tip-up seat 10 is embodied as a configuration in which the seat slide device 26 can slide back and forth, but is not limited to this, and for example, the base bracket 20 is used as a vehicle floor. It may be impossible to move back and forth by fixed connection.

  The above-described embodiments are for explaining the present invention, and are not intended to limit the present invention. All modifications, alterations, etc. within the technical scope of the present invention are included in the present invention. Needless to say.

  In general, chip-up seats mounted on automobiles such as one-box vehicles and RV vehicles are targeted, but the present invention is not limited to this. For example, the present invention is applied to chip-up seats of other vehicles. Also good.

1 is a schematic longitudinal sectional view of a vehicle tip-up seat according to the present invention at a lowered position of a seat cushion. It is a schematic side view of the vehicular tip-up seat in the lowered position of the seat cushion. It is a schematic side view of the tip-up seat for vehicles in the position where the seat cushion is flipped up. It is a schematic operation | movement figure of the chip up seat for vehicles.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Tip-up seat for vehicles 12 Motor 16 Seat cushion 28 Drive shaft 30 Power transmission means 40 Support link 42 Support link

Claims (2)

A tip-up seat for a vehicle that includes a seat cushion and a seat back that are individually supported between a pair of left and right base brackets, and that folds up the seat cushion in the seat back direction with a predetermined pivot as a fulcrum. And
A motor that is driven and controlled by a predetermined switch operation is disposed in the seat cushion under fixation with respect to the seat cushion frame that forms the skeleton of the seat cushion, and the pivot that is the center of swinging of the seat cushion; The drive shaft is driven to rotate in a direction corresponding to the rotation direction of the motor output end by power transmission of the motor via a predetermined power transmission means to the parallel drive shaft,
By providing a support link integrally with the drive shaft, and by installing a predetermined support link between the tip of the support link and a predetermined position of the base bracket under the pivot of each end, A tip-up seat for a vehicle, wherein the seat cushion can be swung between a lowered position and a flip-up position by the power of the motor. The tip-up operation range is defined between the lowered position and the flip-up position, and the upper predetermined range from the lowered position is defined as the tilt operation range that becomes the seatable position,
2. The tip-up seat for a vehicle according to claim 1, wherein the seat cushion is swung between tip-up operating ranges by a tip-up switch, and the seat cushion is swung within a tilt-operating range by a tilt switch.

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