JPH0642382U - Folding power seat device with headrest folding mechanism - Google Patents

Abstract

(57) [Summary] (Correction) [Purpose] To simplify the folding work of a seat with a car headrest. [Structure] Arm piece 1 fitted on an eccentric shaft 7 of a reclining mechanism
The wire 13 from one end of 5 is connected to the lock hook 11, and the tip side of this arm piece 15 is made to correspond to the operating piece 17 provided on the back frame 6, and when the back frame 6 is tilted forward by reclining, the back frame 6 The operation piece 17 of 6 pushes the arm piece 15 to release the lock hook 11 from the lock shaft 10, and the other end of the wire 21 connected to the shaft 19 supported by the fixed bracket 4b is connected to the back frame 6 of the back frame 6. A back frame that is connected to a shaft 25 that is axially supported by a bearing body 24 of a connecting member 23 provided at the upper end, and that is tilted forward about a locus of a wire 21 that rotates about the shaft 19 and an eccentric shaft 7 of the back frame 6. The headrest 27 provided on the rotatable shaft 25 is drawn in and folded by the difference of the loci of 6.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a folding power seat device having a folding mechanism mounted on a vehicle and having a headrest folding mechanism for folding the drive of this mechanism by a series of operations.

[0002]

[Prior art]

 As a conventional folding sheet apparatus, there is a Japanese Patent Application No. 3-85495 filed by the applicant of the present application, and a folding power sheet apparatus. However, this power seat device did not have a headrest folding mechanism. In addition, the manual folding third seats equipped on the currently marketed one-box cars do not have a mechanism for folding the headrest in conjunction with the folding of the seat, and the storage (folding) of the headrest is Once the headrest was removed from the backseat, it was stored in an unobtrusive place, or the headrest itself was made smaller and integrated with the backseat to eliminate headrest storage work.

[0003]

[Problems to be solved by the device]

 The problem to be solved is, as described above, in the conventional headrest, the work of removing the headrest has to be performed, and the work of removing the headrest is troublesome, and the headrest that is small in size for storage is The function as a headrest is impaired.

[0004]

[Means for Solving the Problems]

 The present invention is provided with a seat reclining mechanism, a seat rising mechanism and a headrest. The reclining mechanism, the seat rising mechanism, and the headrest are driven in a series of operations to facilitate folding work with a headrest. It is provided.

[0005]

[Action]

 Next, the operation of the present invention will be described. First, the tip side bracket 1 is rotatably pivoted through a connecting bracket 35 in which the seat cushion 3 is set, and the back frame 6 to which the fixed bracket 4 and the back seat 5 on the other end side are attached is attached to the eccentric shaft 7. A reclining device that is more pivotally supported and that employs a differential reduction mechanism is configured.

Therefore, when the geared motor 43 is rotated while folding the seat and the headrest 27 provided on the upper end side of the back frame 6, this rotation is transmitted from the sprocket 38 to the chain 37 via the gear train. A reclining operation is performed by rotating the eccentric shaft 7 of the reclining device A through a sprocket 8, and then the operation of raising the entire seat is performed by moving the seat back 5 attached to the back frame 6 forward by the reclining operation. When tilted, the operating piece 17 attached to the back frame 6 side pushes against the spring 12 the tip end of the arm piece 15 fitted in the central portion to the eccentric shaft 7 to rotate and move. When the wire 13 connected to the base end via the pin 16 is pulled, the locking hook 11 connected to the other end of the wire 13 is fixed to the bracket. When the shaft 9 supported by the armature 4 is rotated, the lock hook 11 locked by the lock shaft 10 mounted on the bracket 2 is unlocked, and when the operation is continued, the fixed bracket 4 of the reclining device A is fixed. The other end of the wire 21 connected to the shaft 19 rotatably supported by the bearing 18 provided on the bracket 4b integrated with the shaft 25 supported by the bearing body 24 provided at the connecting portion 23 provided at the upper end of the back frame 6 The headrest 27 is retracted and folded by the wire 21 due to the difference between the locus of the wire 21 rotating around the shaft 19 and the locus of the back frame 6 tilted forward with the eccentric shaft 7 of the back frame 6 as the center. To be acclaimed. Further, the seat cushion 3 is folded together with the headrest 27. Furthermore, this folding stops a series of operations with a limit switch (not shown).

Further, the return operation for returning the folded state to the original state is the reverse operation of the above operation. Further, the locking is performed by the spring 12 of the shaft 9, and further, the return of the headrest is returned to the original position by the spring 30 biased to the shaft 25 in conjunction with the rearward tilt of the back seat.

[0008]

【Example】

 FIG. 1 shows an embodiment of a folding power seat device with a headrest folding mechanism according to the present invention, which will be described below with reference to the drawings.

Reference numerals 1 and 2 denote front and rear brackets mounted on the vehicle body, which receive the seat cushion 3.

A fixed bracket 4 mounted on the vehicle body is provided on the bracket 2 side, a reinforcing bracket 5 is further provided on the fixed bracket 4, and an internal gear 4 a is provided on the fixed bracket 4. The internal gear 4a is provided with a back frame 6 and an external gear 6a rotatably supported by an eccentric shaft 7 having an eccentric portion 7a is oscillated relative to the rotation of the eccentric shaft 7. The reclining device A is configured by adopting the mechanism.

A sprocket 8 is attached to one end of the eccentric shaft 7. Further, a rotatable shaft 9 is provided on the fixed bracket 4, and one end of a locking hook 11 that is engaged with and disengages from a lock shaft 10 that projects laterally from the bracket 2 is fixed to one end of the shaft 9. The spring 12 urged toward the lock shaft 10 by the hook portion 11a provided at the end acts on the shaft 9 to transmit the rotation to the shaft 9. One end of a wire 13 is connected to a central portion of the locking hook 11 via a pin 14, and the other end of the wire 13 is an arm piece 15 in which the central portion is rotatably fitted to the eccentric shaft 7. One end side of the arm is connected via a pin 16, and the wire 13 is pulled by the forced rotation of the arm piece 15 to release the locking hook 11 from the lock shaft 10 against the spring 12 to be in a free state.

A hook-shaped actuating piece 17 corresponding to the arm piece 15 and serving as a pressing and stopper is attached to the back frame 6, and the actuating piece 17 is returned to the auxiliary bracket 5 attached to the fixed bracket 4. A receiving edge 5a is provided for controlling reception and reception at times. Also, on the fixed bracket 4 side, one end of a shaft 19 rotatably supported by a bearing 18 provided on a bracket 4b fixed integrally with the fixed bracket 4 at a position eccentric from the eccentric shaft 7 via a pin 20. A supporting piece 25a is formed from a shaft 25 that is connected to the upper end side of the back frame 6 via a hook-shaped supporting metal member 22 that is pivotally supported by the shaft 19. The shaft 19 is provided with one end of a support rod 28 from a headrest 27 which is detachably attached to the shaft 25 via a connecting pipe 29 from the shaft 25. Urges the spring 30 to return the headrest 27. Further, the shaft 25 is provided with a restricting piece 31 for restricting the return position in which the spring 30 is urged, so that the connecting member 23 holds the receiving headrest 27 in a stable position.

A shaft 33 to which a gear 32 is attached is pivotally supported on the bracket 1 on the tip side of the seat cushion 3, and the shaft 33 is connected to a corresponding bracket via a connecting pipe 34. One end of a connecting bracket 35 for setting the seat cushion 3 is swingably supported on the shaft 33.

A shaft mounted with a gear 36 that meshes with the gear 32, a sprocket 8 provided on the eccentric shaft 7 on the fixed bracket 4 side, and a sprocket 38 connected via a chain 37 to the connecting block. 39 is provided so as to be pivotally supported.

A shaft 42 having a pinion 40 meshing with the gear 32 and a gear 41 is pivotally supported on the bracket 1, and a shaft 45 having a pinion 43 meshing with the gear 41 and a gear 44 is further provided on the bracket 1. The shaft 44 is supported, and the gear 44 is engaged with the pinion 47 from the geared motor 46 to transmit the drive to the eccentric shaft 7 to operate the differential reduction mechanism.

[0016]

[Effect of device]

 In the present invention, the headrest can be folded in conjunction with the forward and backward tilting of the back seat without the need for removing the headrest, which is not troublesome. In addition, since it is possible to fold a headrest that is as large as the driver's seat, there is an effect that the lack of functions due to the small headrest does not occur.

[Brief description of drawings]

FIG. 1 is a side view of a folding power seat device with a headrest folding mechanism according to an embodiment of the present invention when folded.

FIG. 2 is a partially enlarged side view of the fixing bracket side of FIG.

FIG. 3 is a sectional view taken along line XX of FIG.

FIG. 4 is a drive-side side view of the seat cushion front end portion of FIG. 1;

5 is a partial front view of FIG.

FIG. 6 is a side view of the headrest.

FIG. 7 is a plan view of a part of FIG.

[Explanation of symbols]

 1,2,4b Bracket 3 Seat cushion 4 Fixed bracket 4a Internal gear 5 Reinforcement bracket 5a Receiving edge 6 Back frame 6a External gear 7 Eccentric shaft 7a Eccentric part 8,38 Sprocket 9,19,25,39,42,45 Shaft 10 Lock Shaft 11 Locking Hook 11a Hook Part 12,30 Spring 13,21 Wire 14,20,26 Pin 15 Arm Piece 17 Actuating Piece 18 Bearing 22 Supporting Metal 23 Connecting Member 24 Bearing Body 25a Supporting Piece 27 Headrest 28 Supporting Rod 29 Connection pipe 31 Control piece 32,36,41,44 Gear 35 Connection bracket 37 Chain 40,43,47 Pinion 46 Geared motor A Reclining device

Claims (1)

[Scope of utility model registration request] 1. Folding power for performing reclining drive and seat cushion start-up drive in a series of operations through a chain by a geared motor provided at a seat cushion front end side equipped with a reclining mechanism and a seat cushion folding mechanism. In the seat, the wire from one end of the arm piece fitted to the eccentric shaft of the reclining is connected to the locking hook, and the other end side of this arm piece is made to correspond to the operation piece provided on the back frame. The locking hook is detachable from the lock shaft, and the fixing bracket is provided with the other end of the wire fixedly provided at the eccentric position of the eccentric shaft supported by a connecting member extending horizontally on the upper end side of the back frame. Also, it is attached to a shaft equipped with a headrest, and the headrest is utilized by utilizing the difference between the trajectory of the back seat and the trajectory of the wire. A folding power seat device with a headrest folding mechanism, which is characterized in that it is pulled in and folded by a wire.