JPH0585237A - Car seat structure - Google Patents

Abstract

PURPOSE:To rotate a seat without interfering with any equipment in a cabin by making the seat retreat up to a specified retreatal position and a seat rotational mechanism operable only at a time when it is situated in the specified position. CONSTITUTION:Two grooves 5, 6 are formed each in a rotary plate 3 and a fixed plate 4 so as to make a retreatal position, where a front seat 1 becomes rotatable, come to a rearmost position where the front seat 1 is made slidable, and when a slide lock of the front seat 1 is released and engagement with a first lock hole 10 formed in the fixed plate 4 is released, the front seat 1 is automatically retracted to the rearmost position being slidable by dint of tensile force of a spring as being guided to these grooves 5, 6 by an L-shaped pin 22 of a slide member 21. Then, the front seat 1 is rotated, engaging a lock member 8 with the inner part of a second lock hole 11, and rotation of the front seat 1 is locked.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle seat structure, and more particularly, to a vehicle seat structure provided with a vehicle longitudinal movement mechanism and a seat rotation mechanism.

[0002]

2. Description of the Related Art A seat structure of an automobile is known in which a front seat can be rotated when a vehicle is stopped (for example, Japanese Patent Laid-Open No. 59-227528). Further, in a vehicle having a back door, a vehicle seat structure in which the back door is opened and the rear seat is rotated, and in a vehicle having three rows of seats, a front seat, an intermediate seat, and a rear seat are rotated Is also known.

[0003]

As described above, in the seat structure of the automobile which allows the seat to rotate, when the seat is rotated, in the case of the front seat, the interference with the steering wheel or the instrument panel is caused. To prevent interference with the front seat in the case of the rear seat, and to prevent interference with the front and rear seats in the case of the intermediate seat. However, the occupant is equipped with a slide mechanism for moving the seat in the vehicle front-rear direction.
The seat is a steering wheel or an instrument panel in the case of a front seat, a front seat in the case of a rear seat, and a front seat in the case of an intermediate seat in an automobile having three rows of seats. It has been usual to move the rear seats to positions where they do not interfere with each other, and then rotate the seats.

However, in this way, when the occupant voluntarily moves the seat to the rotational position and rotates the seat, the occupant does not always interfere with other equipment in the passenger compartment. There is a problem in that it cannot be guaranteed that the seat is moved and the seat is rotated, and as a result, it is impossible to completely prevent interference with other equipment in the vehicle compartment.

[0005]

An object of the present invention is to reliably prevent interference with other equipment in the passenger compartment in a vehicle seat structure having a vehicle front-rear moving mechanism and a seat rotating mechanism. It is an object of the present invention to provide a vehicle seat structure that can be rotated as desired.

[0006]

It is an object of the present invention to allow the seat rotating mechanism to operate only when the seat is retracted to a predetermined retracted position by the vehicle front-rear direction moving mechanism and is located. It is achieved by being configured into. In a preferred embodiment of the present invention,
When the seat back forward tilting mechanism is provided, the seat back forward tilting mechanism tilts the seat forward, and the vehicle front-rear direction moving mechanism moves the seat backward to a predetermined retracted position. Only the seat rotation mechanism is configured to be operable.

In another preferred embodiment of the present invention, when the seat is tilted forward by the seat back tilting mechanism, the vehicle longitudinal movement mechanism of the seat is locked by the vehicle longitudinal movement mechanism of the seat and the seat. The rotation mechanism is configured to be unlocked.

[0008]

According to the present invention, the vehicle front-rear direction moving mechanism causes the seat rotating mechanism to operate only when the seat is retracted to a predetermined retracted position. Since it is configured, the seat rotation will always be at a fixed position, and the predetermined retracted position that allows seat rotation should be chosen so that it does not interfere with other equipment in the passenger compartment. This makes it possible to reliably prevent the interference with other equipment in the vehicle compartment and rotate the seat as desired.

According to the preferred embodiment of the present invention, since the seat is rotated after the seat back is tilted forward, interference with other accessories in the vehicle compartment is more reliably prevented and the seat is secured. , Can be rotated as desired. According to another preferred embodiment of the present invention, when the seat is tilted forward by the seat back tilting mechanism, the vehicle longitudinal movement mechanism of the seat is locked by the vehicle longitudinal movement mechanism of the seat and the seat rotation mechanism is locked. Since it is configured to be released, it is possible to rotate the seat as desired by a simple method and more reliably preventing interference with other equipment in the vehicle interior. Becomes

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT A preferred embodiment of the present invention will be described in detail below with reference to the accompanying drawings. FIG. 1 is an exploded schematic perspective view of a vehicle seat structure according to an embodiment of the present invention. 1, a vehicle seat structure according to an embodiment of the present invention includes a front seat 1, a rail 2, a rotating plate 3 mounted on the upper surface thereof, a rotating plate 3 rotatably supported and fixed to a vehicle body. Fixed plate 4 and
A groove 5 and a groove 6 which are attached to a lower portion of the front seat 1 and which are engaged with a pin fixed to a slide member, which will be described later, are engaged with the rail 2 so that the front seat 1 can slide in the vehicle front-rear direction. The rotary plate 3 and the fixed plate 4 are formed on the fixed plate 4. In FIG.
Reference numeral 7 denotes a support member that is attached to the fixed plate 4 and rotatably supports the rotating plate 3, and 8 is formed on the rotating plate 3, and a lock cable described later for locking the rotation of the front seat 1 is inserted therethrough. The lock members 10 and 11 provided with the insertion hole 9 are provided in the fixed plate 4, and the first lock hole and the second lock hole with which a lock cylinder, which will be described later, provided at the tip of the lock cable engages. The locking cylinder engages with the first lock hole 10 before the front seat 1 rotates, and the locking cylinder engages with the second lock hole 1 after the completion of rotation of the front seat.
1, the rotation of the front seat 1 is locked.

FIG. 2 is a schematic perspective view showing a slide mechanism for sliding the front seat 1 in the longitudinal direction of the vehicle body, and the left side shows the front side of the vehicle body. In FIG. 2, the slide mechanism 20 includes a slide member 21 and a rail 2, and the slide member 21 has a groove 5 of the rotary plate 3 and a fixed plate 4 on its side surface.
The L-shaped pin 22 that engages with the groove 6 of the L-shaped slide lock release lever 23 that is fixed so as to project and is operated by the occupant to allow the front seat 1 to slide is provided with the L-shaped slide lock release lever 23. The shaft portion is attached to the slide member 21 so as to be along the side surface of the slide member 21 and rotatable about the longitudinal axis of the slide member 21. The first arm member 24 is fixed to the shaft portion of the slide lock release lever 23, and the second arm member 25 is swingably attached around the shaft portion of the slide lock release lever 23. FIG. 3 is an enlarged schematic perspective view of the first arm member 24 and the second arm member 25. A fixed arm 28 that fixes the end of a wire cover 27 that covers the slide lock release wire 26 is further fixed to the slide member 21, and the tip end of the slide lock release wire 26 is the second arm member 25.
Is attached via a mounting member 29. Figure 3
As shown in FIG. 2, the second arm member 25 includes an arm portion 30 that extends between the first arm member 24 and the side surface of the slide member 21.

A locking member 32 having a plurality of tooth-shaped locking portions 31 is fixed to the rail 2, and, as shown in FIG. 3, it is locked to the first arm member 24. Member 32
The engaging portion 33 that can be engaged with the engaging portion 31 of the
The front seat 1 is not released until the engagement between the engagement portion 33 of the arm member 24 and the engagement portion 31 of the engagement member 32 is released.
To be able to slide.

The other end of the slide lock release wire 26 is connected to a connecting member attached to the front seat 1, as will be described later, and the reclining lever is
When operated and the front seat 1 is tilted forward, the slide lock releasing wire 26 is pulled by the connecting member, and as a result, the second arm member 25 moves around the shaft portion of the slide lock releasing lever 23 in FIG. , Swings to the front side, and the arm portion 30 of the second arm member 25 moves to the first
In FIG. 2, the arm member 24 is pushed up to the front side to disengage the engagement portion 33 of the first arm member 24 and the engagement portion 31 of the engagement member 32, so that the front seat 1 can slide. Is configured to be.

When the grip portion 34 of the slide lock release lever 23 is operated in the direction of arrow A by an occupant, the first arm member 24 fixed to the shaft portion of the slide lock release lever 23 is 2, the engaging portion 33 of the first arm member 24 and the locking member 3 are pushed up to the front side.
The engagement of the second locking portion 31 is released, and the front seat 1 is similarly configured to be slidable.

FIG. 4 is a schematic perspective view of the slide mechanism 20 viewed from the side opposite to FIG. 2, and the right side shows the front side of the vehicle body. As shown in FIG. 4, a protrusion 35 is formed on the side surface of the slide member 21, and a spring 36 is formed.
However, the front end thereof is attached to the projection 35, and the rear end thereof is attached to the attachment portion of the rail 2 on the rear side of the vehicle body, and urges the slide member 21 rearward. Therefore, when the front seat 1 becomes slidable, the slide member 2
1 is slid backward by the tensile force of the spring 36, and as a result, the front seat 1 is also slid backward.

FIG. 5 is a schematic side view of the reclining mechanism of the front seat 1. In the reclining mechanism shown in FIG. 5, 40 is a seat cushion, and
1 is a seat back. The seat back 41 is capable of reclining around the pivot shaft 42. A connecting member 43 is attached, and the connecting member 43 is pivotally supported by a gear member 45 in which a gear 44 is formed in a fan-shaped circumferential portion.

A base member 46 is fixed to a side portion of the seat cushion 40, and a lock plate 47 is attached to the base member 46 so as to be swingable around a lock plate pivot shaft 48. The lock plate 47 is formed with a gear 49 capable of meshing with the gear 44 of the gear member 45. Further, as shown in FIG.
The side surface on which the is not formed has a convex side surface 50 and a concave side surface 51, and a protrusion 52 is formed on the surface of the lock plate 47.

Further, a cam 54 fixed to a reclining lever 53 operated by an occupant is provided, and the cam 54 is normally in contact with the convex side surface 50 of the lock plate 47. FIG. 7 is a schematic perspective view showing the reclining lever 53 and the cam 54. The reclining lever 53 includes a grip portion 55 operated by an occupant, and is provided on the opposite side of the grip portion 55 with respect to the pivot shaft 56. A guide hole 57 is formed, and the projection 52 of the lock plate 47 comes into contact with the wall portion of the guide hole 57.
Further, the reclining lever 53 is urged by the spring 58 in the counterclockwise direction around the pivot shaft 56 in FIG.

Further, as shown in FIG. 8, one end of a coil spring 60 attached to a spring attaching member 59 fixed to the base member 46 is attached to the connecting member 43, and the front seat 1 is , Always biased to the front. Further, as shown in FIG. 5, a wire fixing portion 62 to which one end portion of the slide lock releasing wire 26 is fixed and one end portion of a lock cable described later are attached to the arm portion 61 extending below the connecting member 43. A cable fixing portion 63 for fixing is provided. In FIG. 5, the slide lock release wire 26 and the lock cable are omitted.

FIG. 9 shows a rotary plate 3 and a fixed plate 4.
3 is a schematic cross-sectional view showing the relationship with the slide mechanism 20. FIG. In FIG. 9, the rotating plate 3 is the fixed plate 4
Is rotatably supported by a support member 7 attached to the rail 2, and the rail 2 is fixed on the rotary plate 3.
A slide member 21 fixed to the front seat 1 is engaged with the rail 2 so as to be slidable in the front-rear direction of the vehicle body. In addition, the L-shaped pin 22 fixed to the side surface of the slide member 21 is attached to the rotary plate 3
The groove 5 and the groove 6 of the fixed plate 4 are engaged with each other.
Here, the groove 5 is formed by the pin 2 when the front seat 1 is rotated.
It is formed so as to coincide with the locus through which 2 passes.

FIG. 10 is a schematic sectional view of a seat lock mechanism for locking the front seat 1 so as not to rotate. A cylindrical lock member 8 is formed on the surface of the rotary plate 3, and one end of the insertion hole 9 is fixed to a cable fixing portion 63 provided on the arm portion 61 of the connecting member 43. The lock cable 70 is inserted. A lock cylinder 71 is attached to the tip of the lock cable 70.
Is normally located in the first lock hole 10 formed in the fixed plate 4 by the spring 72 provided between the lock cylinder 71 and the inner upper surface of the lock member 8. The rotation of the seat 1 is locked.

In the vehicle seat structure according to the embodiment of the present invention constructed as described above, the front seat 1 is rotated as follows. First, when the grip portion 55 of the reclining lever 53 is pulled upward by the occupant, it is fixed to the reclining lever 52, and the cam 54 that was in contact with the convex side surface 50 of the lock plate 47 is changed to the concave side surface of the lock plate 47. It comes into contact with 51. As a result, the gear 44 of the gear member 45
And the gear 49 of the lock plate 47 are disengaged from each other, and the tensile force of the coil spring 60 causes the seat back 42 to move forward around the pivot shaft 42.

When the seat back 42 is tilted forward around the pivot shaft 42, the connecting member 43 attached to the seat back 41 is also pivoted as shown in FIG.
Around it, it swings forward, and as a result, the wire fixing portion 62 and the cable fixing portion 63 provided on the arm portion 61.
Moves backward, the slide lock release wire 26 and the lock cable 70 are pulled backward.

When the slide lock release wire 26 is pulled rearward, the second arm member 25 is moved around the shaft portion of the slide lock release lever 23 in FIG.
The arm portion 30 of the second arm member 25 swings toward the front side.
However, the first arm member 24 is pushed up to the front side in FIG. 2, and the engagement between the engagement portion 33 of the first arm member 24 and the engagement portion 31 of the engagement member 32 is released. As a result, the front seat 1 becomes slidable, and the front seat 1 slides rearward by the tensile force of the spring 36.

On the other hand, the cable 70 for locking is
When pulled, the lock cylinder 71 is pulled upward against the spring force of the spring 72, the engagement with the first lock hole 10 formed in the fixed plate 4 is released, and the front seat 1 is also locked. Released, pin 2
2 engages with the groove 5 formed in the rotary plate 3 and the groove 6 formed in the fixed plate 4, so that the front seat 1 is retracted to a predetermined retracted position defined by the grooves 5 and 6. Until it does, it is not rotatable.

In this embodiment, the grooves 5 and 6 are arranged so that the retracted position where the front seat 1 can rotate becomes the rearmost position where the front seat 1 can slide.
Are formed on the rotary plate 3 and the fixed plate 4, respectively, and when the slide lock of the front seat 1 is released, the front seat 1 is provided with the grooves 5 and 6
While being guided to, the spring 36 automatically retracts to the rearmost slidable position by the tensile force of the spring 36. Thus, at the position where the front seat 1 is stopped, the occupant
Rotate the front seat 1. When the rotation of the front seat 1 is completed, the lock member 8 provided on the rotary plate 3 faces the second lock hole 12, and therefore, in this state, the front seat 1 that was tilted forward is returned to its original position. When returned, the lock cable 70 is connected to the connecting member 43.
Since it is no longer pulled by the arm portion 61, the lock cylinder 71 is engaged in the second lock hole 12 by the spring force of the spring 72, and the rotation of the front seat 1 is locked.

According to this embodiment, the front seat 1 is
By operating the reclining lever 53,
When the front seat 1 is tilted forward, and further, in conjunction with the front seat 1 being tilted forward, the rotation lock is released, and the spring 36 automatically retracts to the rearmost slidable position and stops. For the first time, the front seat 1 is configured to be rotatable, and the front seat 1 can be rotated only at the rearmost position where the front seat 1 is tilted forward and the front seat 1 is slidable. As a result, the front seat 1 can be rotated while more surely preventing interference with other equipment such as the steering wheel in the vehicle interior.

FIG. 12 is an exploded schematic perspective view of a vehicle seat structure showing another embodiment of the present invention, and FIG. 13 is a partial schematic sectional view thereof. In the embodiment shown in FIGS. 12 and 13, the slide mechanism 20 is provided below the fixed plate 4. That is, the pair of slide members 21a
And 21b are attached to the lower surface of the fixed plate 4, and an L-shaped pin 22 is fixed to the side surface of one slide member 21a, and the pin 22 is provided in the groove 6 of the fixed plate 4 and the front seat 1. It engages with the groove 5 of the rotary plate 3 fixed to the lower surface. On the other hand, a pair of rails 2
a and 2b are fixed to a floor (not shown). Therefore, in this embodiment, the fixed plate 4 slides along with the front seat 1 and the rotating plate 3 by being guided by the grooves 5 and 6, and at the most retracted position, only the front seat 1 and the rotating plate 3 are It is configured to rotate by being guided by the groove 5 of the rotating plate. Here, the other slide member 21b is for allowing the fixed plate 4 to move in the vehicle front-rear direction. In the embodiment of FIGS. 12 and 13, the mechanism for locking the rotation of the seat is omitted.

FIG. 14 is a block diagram of an automobile seat structure showing still another embodiment of the present invention.
In the embodiment shown in FIG. 14, a seat rotation switch 80 operated by an occupant is provided, and an operation signal is input to the computer unit 81. When the operation signal is input from the seat rotation switch 80, the computer unit 81 receives the reclining motor 82.
The front seat 1 is tilted forward by outputting a front tilt signal to. Whether or not the front seat 1 is tilted forward is detected by the reclining detection means 83, and when a reclining signal indicating that the seat back 41 is tilted forward is input from the reclining detection means 83, the computer unit 81 A slide signal is output to the seat slide motor 84 to slide the front seat 1 backward. Then, when a backward movement signal indicating that the front seat 1 is located at the rearmost slidable position is input from the seat slide detection means 85 that detects the slide position of the front seat 1, the computer unit 8
1 outputs a rotation signal to the seat rotation motor 86 to rotate the front seat 1. A rotation completion signal indicating that the rotation of the front seat 1 is completed and the rotation of the front seat 1 is locked is input from the seat rotation detecting means 87 that detects that the front seat 1 is rotated and the rotation is locked. Then, the computer unit 8
1, the front seat 1 is tilted backward. FIG. 15 is a flowchart showing the operations performed by the computer unit 81.

The present invention is not limited to the above embodiments, but various modifications can be made within the scope of the invention described in the claims, and these are also included in the scope of the present invention. It goes without saying that this is what is done. For example,
Although the rotating mechanism of the front seat 1 has been described in the above-described embodiment, the present invention is also applicable to the rotation of the middle seat in an automobile having a rear seat and three rows of seats.

Further, in the above embodiment, the front seat 1 becomes slidable only when the front seat 1 is tilted forward, and the front seat 1 reaches the rearmost position where the front seat 1 is slidable, and then the front seat 1 is reached. Sheet 1
Although it is configured so that the seat can be rotated, the fact that the seat is tilted forward is not an essential condition for allowing the seat to rotate, and even if the seat is not tilted forward, if the seat reaches a predetermined retracted position, The rotation of the seat may be allowed.

Further, in the above embodiment, the rotation of the front seat 1 is allowed only at the rearmost position where the front seat 1 is slidable, but a predetermined position other than the rearmost position where the seat is slidable is provided. The seat may be allowed to rotate in the retracted position.

[0033]

According to the present invention, in a vehicle seat structure including a vehicle front-rear direction moving mechanism and a seat rotating mechanism, interference with other equipment in the vehicle compartment is reliably prevented. It is possible to provide a vehicle seat structure in which the seat can be rotated as desired.

[Brief description of drawings]

FIG. 1 is an exploded schematic perspective view of a vehicle seat structure according to an embodiment of the present invention.

FIG. 2 is a schematic perspective view showing a slide mechanism for sliding the front seat in the front-rear direction of the vehicle body.

FIG. 3 is an enlarged schematic perspective view of a first arm member and a second arm member.

FIG. 4 is a schematic perspective view of a slide mechanism.

FIG. 5 is a schematic side view of a reclining mechanism for a front seat.

FIG. 6 is a schematic perspective view of a lock plate.

FIG. 7 is a schematic perspective view of a reclining lever and a cam.

FIG. 8 is a schematic perspective view of a connecting member and a coil spring.

FIG. 9 is a schematic cross-sectional view showing the relationship between a rotary plate, a fixed plate, and a slide mechanism.

FIG. 10 is a schematic cross-sectional view of a seat lock mechanism.

FIG. 11 is a schematic side view of the reclining mechanism showing a state in which the front seat is tilted forward.

FIG. 12 is an exploded schematic perspective view of a seat structure of an automobile showing another embodiment of the present invention.

FIG. 13 is a partial schematic cross-sectional view of a vehicle seat structure showing another embodiment of the present invention.

FIG. 14 is a block diagram of a vehicle seat structure showing still another embodiment of the present invention.

FIG. 15 is a flowchart showing operations performed by a computer unit in the embodiment shown in FIG.

[Explanation of symbols]

 1 Front Seat 2, 2a, 2b Rail 3 Rotating Plate 4 Fixed Plate 5 Groove 6 Groove 7 Support Member 8 Lock Member 9 First Lock Hole 10 Second Lock Hole 20 Slide Mechanism 21, 21a, 21b Slide Member 22 Pin 23 Slide Lock Release lever 24 First arm member 25 Second arm member 26 Slide lock release wire 27 Wire cover 28 Fixed arm 29 Mounting member 30 Arm part 31 Locking part 32 Locking member 33 Engaging part 34 Slide lock releasing lever gripping part 35 Protrusion of slide member 36 Spring 40 Seat cushion 41 Seat back 42 Pivot shaft of seat back 43 Connecting member 44 Gear 45 Gear member 46 Base member 47 Lock plate 48 Lock plate pivot shaft 49 Gear 50 Convex shape of lock plate Surface 51 Concave side surface of lock plate 52 Protrusion of lock plate 53 Reclining lever 54 Cam 55 Recliner lever grip portion 56 Reclining lever pivot shaft 57 Guide hole 58 Spring 59 Spring mounting member 60 Coil spring 61 Coupling member arm portion 62 Wire Fixed part 63 Cable fixed part 70 Locking cable 71 Locking cylinder 72 Spring 80 Seat rotation switch 81 Computer unit 82 Reclining motor 83 Reclining detection means 84 Seat slide motor 85 Seat slide detection means 86 Seat rotation motor 87 Seat rotation detection means

Claims (3)

[Claims] 1. In a vehicle seat structure including a vehicle front-rear direction movement mechanism and a seat rotation mechanism, the vehicle front-rear direction movement mechanism retreats the seat to a predetermined retreat position. A seat structure for an automobile, wherein the seat rotation mechanism is operable only when the seat is rotating. 2. A seat back forward tilting mechanism is further provided,
The seat back is tilted forward by the seat back tilting mechanism, and by the vehicle front-rear direction moving mechanism of the seat,
The vehicle seat structure according to claim 1, wherein the seat rotation mechanism is operable only when the seat is retracted to a predetermined retracted position and is positioned. 3. The seat back forward tilt mechanism releases the lock of the vehicle front-rear direction movement mechanism and the seat rotation mechanism lock of the seat by the vehicle front-rear direction movement mechanism when the seat back is tilted forward. The seat structure for an automobile according to claim 1 or 2, wherein the seat structure is configured as described above.