JPH0681821U - Seat cushion support structure for vehicle seats - Google Patents

Abstract

(57) [Summary] [Purpose] When the seat cushion is slid forward and backward, the vertical mechanism is moved up and down in synchronization with this, and the height of the seat cushion is adjusted at the same time. An interlocking arm 33 is rotatably supported by an arm bracket 34 fixed to an upper rail, and the interlocking arm 33 is pivoted so that the interlocking arm 33 is pivoted by a sliding operation of the upper rail 3 in the front-rear direction. Is engaged with the lower rail 1. Vertical mechanism 1
1, 21 Vertical rods 13, 23 and interlocking arm 3
3, the operation link mechanisms 37 and 42 for transmitting the rotation of the interlocking arm 33 based on the sliding operation of the upper rail 3 to the vertical rods 13 and 23 to operate the vertical rods 13 and 23 are arranged. .

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a seat cushion support structure for a vehicle seat.

[0002]

[Prior art]

 Conventionally, in vehicle seats, there is known a structure in which an upper rail is attached to a lower rail fixed to a floor panel so as to be slidable in the front-rear direction, and a seat cushion is supported on the upper rail by a vertical mechanism so that the height of the seat cushion can be adjusted. It is being done. In a vehicle seat with such a structure, the seat cushion along with the upper rail is slid forward and backward along the lower rail while the slide lock mechanism is unlocked by pulling up the slide knob, while rotating the vertical knob. The height of the seat cushion is adjusted by vertically moving the vertical mechanism by operation.

[0003]

[Problems to be solved by the device]

 By the way, in the above-mentioned conventional apparatus, the slide adjustment of the seat cushion in the front-rear direction and the height adjustment must be individually performed based on the operation of the slide knob and the vertical knob. For this reason, when an occupant of a different size sits on the seat cushion, he or she may only adjust the slide in the front-rear direction and not the height, and the vertical mechanism may not be used effectively. .

In view of the above-mentioned conventional problems, an object of the present invention is to vertically adjust the seat cushion at the same time when the seat cushion is slid in the front-rear direction and the vertical mechanism is moved up and down in synchronization with the slide adjustment. It is to provide a seat cushion support structure for a vehicle seat that can be used.

[0005]

[Means for Solving the Problems]

 In order to achieve the above object, the present invention is directed to a seat for a vehicle seat in which an upper rail is fitted to a lower rail so as to be slidable in a front and rear direction, and a seat cushion is supported on the upper rail by a vertical mechanism so that its height can be adjusted. A cushion support structure, in which an interlocking arm is rotatably supported by an arm bracket fixed to the upper rail, and the interlocking arm is pivoted by a sliding movement of the upper rail in the front-rear direction. , One end of the interlocking arm is engaged with the lower rail, and the rotation of the interlocking arm based on the sliding motion of the upper rail is transmitted to the vertical rod between the vertical rod of the vertical mechanism and the interlocking arm. An interlocking link mechanism for activating the vertical rod is provided.

[0006]

[Action]

 In the seat cushion support structure for a vehicle seat configured as described above, when the seat cushion is slid together with the upper rail in the front-rear direction with respect to the lower rail, the interlocking arm is rotated in synchronization with this. The rotation of the interlocking arm is transmitted to the vertical rod of the vertical mechanism by the interlocking link mechanism, and the vertical movement of the vertical mechanism causes the height of the seat cushion to be adjusted.

[0007]

【Example】

 An embodiment of the present invention will be described below with reference to the drawings. 1 to 3, a pair of left and right lower rails 1 extending in the front-rear direction are fixed by rail brackets 2 on a floor panel of a vehicle body. Upper rails 3 are fitted to the lower rails 1 so as to be slidable in the front-rear direction, and a well-known slide lock mechanism 4 is assembled between the lower rails 1 and the upper rails 3. That is, the slide lock mechanism 4 pulls the slide knob 6 at the front end of the lock shaft 5 rotatably attached to the upper rail 3 upward against the urging force of the spring 7 to move the slide knob 6 onto the shaft of the lock shaft 5. The lock piece 8 provided is disengaged from the locking teeth 9 of the lower rail 1 and unlocked. Under this state, the upper rail 3 is allowed to slide relative to the lower rail 1 and the slide knob 6 is released. The lock piece 8 is rotated in the lock direction together with the lock shaft 5 by the urging force of the spring 7, and by engaging with the locking teeth 9, the upper rail 3 is locked with respect to the lower rail 1 at a desired slide adjustment position. Has become.

A seat cushion 10 is supported on the upper rail 3 by height adjustment by front and rear vertical mechanisms 11 and 21. The front vertical mechanism 11 includes a front vertical rod 13 rotatably installed between support brackets 12 fixed to a front side upper surface of the upper rail 3 and a first vertical shaft fixed to both ends of the rod 13. The link 14, the second link 16 connected to the tips of both of the first links 14 by pins 15, and the third link 18 connected to the tips of the second links 16 by pins 17 respectively. I have it. Then, as shown in FIG. 4, the mounting pieces 19 respectively bent at the tips of the third links 18 are fastened by bolts 20 to the lower surface of the seat cushion 10 near the front end.

The rear vertical mechanism 21 is fixed to the rear vertical rod 23 rotatably installed between the support brackets 12 on the rear side of the front vertical rod 13 and the shafts of both ends of the rod 23. The first link 24, the second link 26 having a dogleg shape rotatably attached to the seat back bracket 22 fixed to the upper surfaces of the upper rails 3 by the pins 25, and the first link. A third link 27 that is long in the front-rear direction and is pivotally mounted across the tip of 24 and one end of the second link 26, and pins 28 at the other ends of the second links 26, respectively. And a fourth link 29 connected thereto. The lower surface of the seat cushion 10 near the rear end is fastened by bolts 31 to the mounting pieces 30 formed at the front ends of both the fourth links 29.

The front and rear vertical mechanisms 11 and 21 are respectively moved up and down by an interlocking operation mechanism 32 that operates in synchronization with the seat cushion 10 when the upper rail 3 is slid forward and backward. It has become. The interlocking actuation mechanism 32 includes an interlocking arm 33 and front and rear actuating link mechanisms. That is, the arm bracket 34 that extends toward the other upper rail 3 is fixed to the upper surface of the one upper rail 3. The interlocking arm 33 is attached to the distal end of the arm bracket 34 so as to be rotatable around a pin 35 in the vertical direction near the base end thereof. As shown in FIG. 6, the tip end portion of the interlocking arm 33 is slidably fitted and supported by a hold bracket 36 fixed to the lower rail 1 with respect to the other upper rail 3. The upper rail 3 is slid in the front-rear direction with respect to the lower rail 1, whereby the interlocking arm 33 is rotated about the pin 35.

A front operating link mechanism 37 is assembled between the interlocking arm 33 and the front vertical rod 13, and a rear operating link mechanism 42 is assembled between the interlocking arm 33 and the rear vertical rod 23. ing. The front operation link mechanism 37 includes a first front operation link 39 having a rear end connected to the interlocking arm 33 by a pin 38 and a long hole, and a lower end portion formed by a pin 40 at the front end of the first front operation link 39. It has a second front operating link 41 which is connected and whose upper end is fixed on the axis of the front vertical rod 13. The rear operation link mechanism 42 includes a first rear operation link 44 having a rear end connected to the interlocking arm 33 by a pin 43 and a long hole, and a lower end connected to a front end of the first rear operation link 44 by a pin 45. And a second rear operating link 46 whose upper end is fixed on the axis of the rear vertical rod 23.

This embodiment is constructed as described above. Therefore, as shown in FIGS. 2 and 3, when the seat cushion 10 is arranged at the retracted end position together with the upper rail 3 with respect to the lower rail 1, the seat cushion 10 is lowered by the front and rear vertical mechanisms 13 and 23. Placed in position. When the seat cushion 10 at the retracted end position is slid forward together with the upper rail 3 while the engagement of the lock piece 8 with the engaging tooth 9 of the lower rail 1 by the slide knob 6 is slid forward, the interlocking arm 33 Is rotated clockwise about the pin 35 in FIG.

In FIGS. 7 and 8, when the interlocking arm 33 is rotated clockwise, the first front operating link 39 is pushed forward and the first rear operating link 44 is pulled backward. When the first front operating link 39 is pushed forward, the front vertical rod 13 is rotated clockwise through the second front operating link 41. As a result, the first to third links 14, 16, 18 of the front vertical mechanism 11 are moved up, and the front side of the seat cushion 10 fixed to the mounting piece 19 of the third link 18 is moved up.

On the other hand, when the first rear operating link 44 is pulled rearward at the same time that the first front operating link 39 is pushed out, the rear vertical rod 23 is rotated counterclockwise by the second rear operating link 46. To be done. As a result, the first to fourth links 24, 26, 27, 29 of the rear vertical mechanism 21 are moved up, and the rear side of the seat cushion 10 fixed to the mounting piece 30 of the fourth link 29 is moved up. As described above, by sliding the seat cushion 10 forward, the front and rear vertical mechanisms 11 and 21 are moved up in accordance with the slide adjustment amount of the seat cushion 10, and the seat cushion 10 is moved. The height is adjusted. Then, as shown in FIGS. 7 and 8, when the seat cushion 10 is arranged at the forward end position, the seat cushion 10 is arranged at the rising end position.

[0015]

[Effect of device]

 As described above, according to the present invention, the seat cushion can be height-adjusted in synchronization with the seat cushion by sliding the seat cushion in the front-rear direction. This eliminates the hassle of individually performing adjustments.

[Brief description of drawings]

FIG. 1 is a perspective view showing a seat cushion support structure according to an embodiment of the present invention.

FIG. 2 is a side view of the same.

FIG. 3 is a plan view of the same.

4 is a sectional view taken along line IV-IV in FIG.

5 is a sectional view taken along line VV of FIG.

6 is a sectional view taken along line VI-VI of FIG.

FIG. 7 is a side view showing a state in which the seat cushion is slid to the forward end position.

FIG. 8 is a plan view of the same.

[Explanation of symbols]

 1 Lower Rail 3 Upper Rail 10 Seat Cushion 11 Front Vertical Mechanism 13 Front Vertical Rod 21 Rear Vertical Mechanism 23 Rear Vertical Rod 33 Interlocking Arm 34 Arm Bracket 37 Front Operation Link Mechanism 42 Rear Operation Link Mechanism

Claims (1)

[Scope of utility model registration request] 1. A seat cushion support structure for a vehicle seat in which an upper rail is fitted to a lower rail so as to be slidable in the front-rear direction, and a seat cushion is supported on the upper rail by a vertical mechanism so that the height of the seat cushion can be adjusted. The interlocking arm is rotatably supported by the arm bracket fixed to the arm bracket, and one end of the interlocking arm is engaged with the lower rail so that the interlocking arm is pivoted by the sliding movement of the upper rail in the front-rear direction. And an operation link mechanism for operating the vertical rod by transmitting the rotation of the interlocking arm based on the sliding motion of the upper rail to the vertical rod between the vertical rod of the vertical mechanism and the interlocking arm. A seat for a vehicle seat characterized by being provided Cushion support structure.