JPH0939633A - Seat suspension with weight adjustment device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To simplify structure of a weight adjustment device having a weight display on a seat suspension. SOLUTION: An adjustment shaft 11 to be revolved by revolutional operation force of an operation knob 10 is screwed and inserted into a nut block 22 provided on a link 20, and a pushing and pulling rod 24 to adjust tensile force of springs 26, 26 and a turning display 30 of which a part is exposed outside and on which weight is displayed are connected to the link 20.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle seat seat suspension with a weight adjusting device.

[0002]

2. Description of the Related Art Some conventional vehicle seats are equipped with a seat suspension of a weight adjusting device which can always obtain a constant seat support height even when occupants having different weights are seated. In this seat suspension, the upper frame for mounting the seat is attached to the lower frame on the vehicle floor side so as to be able to move up and down by the link mechanism, and the tension of the spring provided in the link mechanism for urging the upper frame upward is adjusted according to the weight of the occupant. It is a structure that adjusts.

It is known that a display unit for displaying the weight is provided so that the tension of the spring can be adjusted appropriately according to the weight of the occupant (for example, Japanese Patent Laid-Open No. 51-50).
No. 130). A display disc is rotatably supported in an operating handle for rotating the display disc, and the display disc is rotated by a planetary gear transmission.

[0004]

In the one having the display unit displaying the above weight, the operation handle is rotated to adjust the tension of the spring so that the weight of the occupant is displayed on the display unit. Therefore, there is an advantage that the suspension function can be effectively exhibited.

However, the one having this display portion has a problem that the structure is complicated and the productivity is poor. Therefore, it is an object of the present invention to provide a seat suspension with a weight adjusting display portion that has a simple structure and is unlikely to cause a failure.

[0006]

In the seat suspension with a weight adjusting device according to the present invention for achieving the above object, the upper frame biased upward by the tension of the spring has a link mechanism with respect to the lower frame. In a seat suspension with a weight adjusting device in a vehicle seat that is supported so as to be able to move up and down through the weight adjusting device, the weight adjusting device includes a push rod that connects one end to a free end side of the spring, and the other end of the push rod. Part is pivotally attached to a substantially middle part and a base end of which is pivotally attached to the upper frame so as to be rotatable in the moving direction of the push-pull rod, and the tip of this link are connected to each other to move by the rotation of the link. A rotation indicator whose part is exposed to the outside from the upper frame and a nut block provided on the link between the tip of the link and the pivotally connecting part of the push-pull rod are screwed into the operation knob. And it is characterized in that comprising the adjustment shaft for rotating I.

[0007]

[Function] Since the nut block screwed into the adjustment shaft moves in the axial direction by the rotating operation force of the operation knob, the link integrally including the nut block rotates and the tension of the spring is adjusted through the push-pull rod. At the same time, the rotation indicator moves due to the rotation of the link, and a scale indicating the weight appears on the portion of the rotation indicator exposed from the upper frame to the outside.

[0008]

1 to 4 show a first embodiment of the present invention, in which (U) is an upper frame on which a seat (not shown) is mounted and (L) is a vehicle floor. Alternatively, the lower frames attached to the slide rails for adjusting the front-rear position fixed to the vehicle floor are shown. Between the lower frame (L) and the upper frame (U), a link (5
1) and (52) are provided with a link mechanism pivotally connected to each other in an X shape, and the upper frame (U) moves in the vertical direction. Then, a spring (26), a push rod (24), a link (2), which will be described later, are provided on the upper frame (U) side.
0), an adjustment shaft (11), a rotation display body (30) and the like are provided.

A pair of left and right X constituting the above link mechanism
The front side of each of the character-shaped links (51) and (52) is a movable side that moves in the front-rear direction, and the rear end side thereof is a fixed side, and (51A) connects both lower ends of the left and right X-shaped links (51) (51). A connecting shaft, which is connected and has rollers provided at both ends in the lower frame (L), is slidably mounted in the front-rear direction, and (52B) is provided at both ends by connecting the upper ends of the left and right X-shaped links (52). The rollers are mounted on the upper frame (U) so as to be slidable in the front-rear direction.

Also, (52A) is a left and right link (52)
2 shows a rotating shaft which is connected to both lower ends of the and is rotatably pivotally attached to a lower frame (L). Further, (53) indicates a shock absorber for urging the upper frame (1) arranged between the lower frame (L) and the upper frame (U) or the link mechanism upward.

A rotating shaft (not shown) integrally connecting the upper ends of the left and right links (51) is provided with a frame (26A) integrally with the frame (26A), which is composed of a pair of left and right tension coil springs. (26) One end of (26) is hooked. This spring (26) (2
The tension of 6) urges the upper frame (U) upward.

The other ends of the springs (26) and (26) are hooked on the equalizer beam (25), and one end of the push-pull rod (24) is pivoted by a pin (24B) at the center of the equalizer beam (25). The other end of the push-pull rod (24) is rotatably attached to a substantially middle portion of the link (20) by a pin (24A).

The link (20) has a pivotal pin (23) at its proximal end.
By the front frame part (1) of the upper frame (U)
U) rotatably pivoted in the front-back direction, and the tip (20A)
Is connected to the rotary display body (30) by a connecting pin (27).

The tip (2) of the link (20) is
0A) and a portion pivotally attaching the other end of the push-pull rod (24), a nut block (22) is provided, and the nut block (22) is integrally adjusted with the operation knob (10). The shaft (11) is screwed.

The operation knob (10) has a front frame portion (1
U) projecting forward from the front side of the seat and operating knob (1
0) can be rotated. The adjustment shaft (11) that is screwed into the nut block (22) integrally with the operation knob (10) has a stopper (12) integrally at the rear end, and the upper frame (U) faces in the front-back direction of the seat. Installed on.

The rotating display body (30) includes a rotating shaft (32) pivotally mounted on a bracket fixed to the front frame portion (1U) of the upper frame (U), and a side frame portion (2U).
A belt formed by welding one end to the other end and winding the other end around a shaft (31) pivotally supported by a bracket (32 '), and a weight display scale of 50 kg, 60 kg, etc. is displayed on the belt.

A projecting portion (33) is provided so as to project from the side edge of the rotating display body (30), and the tip (20A) of the link (20) is connected to the projecting portion (33) by a connecting pin (27). Has been done. Therefore, the tip (20) of the link (20) is
The rotation indicator (30) is rotated by the movement of (A) in the front-rear direction, and the exposed portion (3) exposed outside the rotation indicator (30).
The weight display appears in A).

Therefore, when the operation knob (10) is rotated, the nut block (22) moves forward and backward, so that the link (20) moves forward and backward around the base end. Along with that, the tension of the springs (26) (26) is adjusted as the push-pull rod (24) moves in the direction of the arrow in FIG. As the vehicle orbits, the weight display corresponding to the tension of the springs (26) and (26) is displayed on the exposed portion (3A).

Thus, since the exposed portion (3A) of the rotary display body (3) and the operation knob (10) where the weight display is exposed to the outside are arranged on the front side of the seat, the weight of the occupant can be adjusted according to the weight of the occupant. The turning operability of the operation knob (10) for adjusting the tension of the springs (26), (26) is improved.

FIGS. 5 and 6 show another embodiment of the present invention, in which a disk or semi-disk shaped rotating plate is used as the rotary display member (30 ') instead of the belt. 5 and 6, the same reference numerals as those in FIGS. 1 to 4 denote the same members as those in the above-described embodiment, and the description thereof will be omitted.

The rotating indicator (30 ') is pivotally attached to a bracket (35) fixed to the front frame portion (1U) of the upper frame (U) by a pivot pin (34) so that the pivot indicator (30) is attached to the outer periphery and the side wall. A weight display is provided along the link, and the link (20) rotates as the link moves forward and backward, and a part of the link is exposed to the outside from the front frame part (1U). (3A ') shows the exposed portion of the rotary display body (30').

Since the tip end (20A) of the link (20) is connected to the locking piece (33 ') provided on the back side of the rotation display body (30'), the rotation operation force of the operation knob (10). As a result, the link (20) rotates in the front-rear direction to rotate the rotary display body (30 '), and at the same time, the tension of the springs (26) and (26) is increased in accordance with the weight display appearing on the exposed portion (3A'). It is adjusted by the movement of the push-pull rod (24).

As described above, the structure is simplified by using the rotary display body (30 ') composed of the disc-shaped or semi-disc-shaped rotary plate, and the assembling property of the weight adjusting device is improved.

[0024]

According to the present invention, as compared with the conventional weight adjusting display section in which the planetary gear transmission is incorporated in the operation knob, a rotation indicator is provided separately from the operation knob, and the rotation indicator is provided. Since it is only necessary to connect the link which is rotated by the rotating operation force of the operation knob to the display body, the structure for the weight adjustment display is simplified, the assembling property and the productivity thereof are improved, and the failure or the like is unlikely to occur.

[Brief description of drawings]

FIG. 1 is a perspective view of a product of the present invention.

FIG. 2 is a perspective view showing a main part of the present invention.

FIG. 3 is a sectional view taken along line III-III in FIG.

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

FIG. 5 is a perspective view showing a main part of another embodiment of the present invention.

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

[Explanation of symbols]

 U Upper Frame L Lower Frame 10 Operation Knob 11 Adjustment Axis 20 Link 22 Nut Block 24 Push-pull Rod 26 Spring 30 Rotation Indicator 30 'Rotation Indicator

Claims (3)

[Claims] 1. A seat suspension with a weight adjusting device in a vehicle seat in which an upper frame biased upward by a tension of a spring is supported movably up and down with respect to a lower frame through a link mechanism. The device has a push-pulling rod connecting one end to the free end side of the spring, and the other end of the push-pulling rod pivotally attached to a substantially intermediate portion and a base end rotatably in the moving direction of the push-pulling rod. A link pivotally attached to the upper frame, a rotation display body in which a tip of the link is connected and movable by rotation of the link and a part of which is exposed to the outside from the upper frame, a tip of the link and a push-pull rod. A seat suspension with a weight adjusting device, which comprises an adjusting shaft which is screwed into a nut block provided on a link between pivot parts and is rotated by an operation knob. 2. The seat suspension with a weight adjusting device according to claim 1, wherein the rotation display body is a belt or a turntable on which the weight is displayed along the movable direction. 3. The seat suspension with a weight adjusting device according to claim 1, wherein the exposed portion of the operation knob and the rotation display body is arranged on the front side of the upper frame.