JPH0545546Y2 - - Google Patents

Description

[Detailed Description of the Invention] "Industrial Application Field" The present invention relates to a vehicle seat comprising a horizontally elongated seat cushion attached to an installation location.

"Prior Art" Examples of conventional vehicle seats include those shown in FIGS. 6 and 7.

That is, the fixed cushion body 2 and the movable cushion body 3 are arranged side by side at the installation location 1 so that their inner ends 4 and 5 are close to each other, and the movable cushion body 3 is placed close to the inner ends 4 and 5 of each other. The cushion body 2 on the fixed side is tilted around the vicinity of the lower portion 6 of the portion 5 between a substantially horizontal state and an inclined resting state.
and the movable cushion body 3 form a ratchet mechanism 7.
are connected via.

``Problem to be solved by the invention'' However, in such conventional vehicle seats, in the resting state, the inner edge 4
The upper part 8 and the upper part 9 of the inner end part 5 interfere with each other, causing wrinkles, resulting in an unsightly appearance and the wrinkles hitting the lumbar vertebrae, making it uncomfortable to sit on. .

Furthermore, in order to prevent wrinkles from occurring, the fixed cushion body 2 and the movable cushion body 3 are connected, for example, by a hinge, so that the movable cushion body 3 tilts approximately around the upper part 9 of the inner end 5. If they are connected by a member, there is a problem in that when the seat member is seated, the seat hits the hinge member located at the upper part of the seat cushion, impairing the comfort of sitting.

The present invention has been made in view of these conventional problems, and aims to provide a vehicle seat that does not impair its appearance even in the resting state and is comfortable to sit on.

``Means for Solving the Problems'' The gist of the present invention for achieving the above purpose is to provide a vehicle seat in which a horizontally long seat cushion is installed at an installation location, with the seat cushion being mounted on the fixed side. and a movable side cushion body, the fixed side cushion body and the movable side cushion body are arranged side by side at an installation location so that their inner ends are close to each other, and the installation site and the movable cushion body are provided with a substantially arc-shaped guide portion centered near the upper portion of the inner end of the movable cushion body, and the other side is provided with a guide portion that is relatively arcuate along the guide portion. A movable guided member is attached to the movable guided member, and when the movable cushion body raises the outer end and tilts, the inner end thereof is attached to the fixed member that is adjacent to the guided member. The cushion body is arranged so as to be displaced over the end of the cushion body on the side, and the cushion body on the movable side is tilted between a substantially horizontal state and an inclined resting state around an upper portion of the inside end. In order to achieve this, the proximal end of the link member is rotatably connected to the installation location, and the distal end of the link member is rotatably connected to the intermediate portion of the cushion body on the movable side in the inner and outer directions. A vehicle seat, characterized in that a restraining mechanism is installed that restrains one of the base end or the distal end of the link member so as not to rotate in order to hold the side cushion body in a desired resting state without being able to tilt. exists in

"Operation" When the movable cushion body is in a substantially horizontal state, the movable cushion body and the fixed cushion body correspond to an integral horizontally elongated seat cushion.

When the base end of the link member is rotated to change the movable cushion body from a substantially horizontal state to a resting state, the intermediate portion of the movable cushion body connected to the distal end of the link member in the lateral direction pushes up. The cushion body on the movable side tilts around the upper part of the inner end thereof.

As a result, the guided member on the other side moved relatively along the guide part on one side between the installation location and the movable cushion body, and the upper part of the movable cushion body was brought close to each other. To be displaced without significantly interfering with the upper part of the inner end of the fixed side cushion body.

When the movable cushion body reaches a desired resting state due to the swinging of the link member, the restraining mechanism restrains either the proximal end or the distal end of the link member so as not to rotate. Thereby, the movable cushion body is held in a desired resting state without being able to tilt.

When the restraint mechanism is released and the base end of the link member is rotated in order to return the movable cushion body from the resting state to a substantially horizontal state, the intermediate portion of the movable cushion body is pulled down, and as a result, the guide The guided member is relatively guided along the section. As a result, the movable cushion body swings around the upper part of its inner end, and the movable cushion body becomes approximately horizontal, lined up with the fixed cushion body, and becomes a normal horizontally long cushion body. It returns to what corresponds to a seat cushion.

“Embodiment” An embodiment of the present invention will be described below based on the drawings.

1 to 5 show an embodiment of the present invention.

As shown in FIGS. 1 and 2, a horizontally long seat cushion 20a is mounted on a vehicle body floor 10, which is an installation location. Seat cushion 2
0a consists of a fixed-side cushion body 20 and a movable-side cushion body 30, and the fixed-side cushion body 20 and the movable-side cushion body 30 are arranged so that their inner ends 21 and 31 are close to each other. It is set up.

A fixed-side cushion body 20 is mounted on the vehicle body floor 10.
is permanently installed. On the other hand, the movable cushion body 30 is attached to the vehicle floor 10 via a pair of guided members 40 disposed at the front position and a pair of link members 50 disposed at the rear position.

The pair of guided members 40 are symmetrical to each other, and in the following description, one guided member 4
0 will be explained as a representative, and the other explanation will be substituted. Similarly, the pair of link members 50 are symmetrical to each other, and in the following description, one link member 5
0 will be explained as a representative, and the other explanation will be substituted.

The guided member 40 has a support bracket 41 erected on the vehicle body floor 10, and an end portion 3 on the inside of the cushion body 30 on the movable side at the tip of the support bracket 41.
A pin member 42 protruding toward the first side is fixed.
A substantially arc-shaped guide groove 33 is formed in the inner end 31 of the movable cushion body 30 and is centered near the upper part 32 of the inner end 31. are movably fitted. When the movable cushion body 30 raises the outer end 36 and tilts, the guide groove 33 serving as the guide portion and the pin member 42 of the guided member 40
The inner end 31 is disposed so as to be displaced over the end 21 of the adjacent fixed cushion body 20.

A pivot bracket 12 is fixed to the vehicle floor 10, and one end 51 of a link member 50 is rotatably supported by a pivot 13 embedded in the pivot bracket 12. The other end 52 of the link member 50 is
Intermediate portion 3 in the inner and outer direction of the movable cushion body 30
It is rotatably supported by a pivot pin 35 implanted in 4.

As shown in Figures 1 and 3 to 5,
The outer peripheral edge of the pivot bracket 12 has teeth 15, 15.
...is engraved. A claw member 55, which can successively engage the teeth 15, 15, . The claw member 55 is pressed against the tooth portion 1 by the spring member 16a.
5 in the counterclockwise direction in FIG. 3 about the pivot shaft 14.

The tooth portion 15, the spring member 16a, the claw member 55, and the like constitute a restraint mechanism.

A disengagement member 16 is rotatably pivoted by the pivot shaft 13 to ride on the outer peripheral edge 17 of the claw member 55 so as to swing the claw member 55 to a position where it cannot engage with the tooth portion 15 against the biasing force of the spring member 16a. ing. A guiding inclined groove 18 is formed at the end of the outer circumferential edge 17 of the disengagement member 16 so that the claw member 55 rides on the outer circumferential edge 17 smoothly.

The pivot bracket 12 has a stopper protrusion that comes into contact with the disengagement member 16 to prevent the disengagement member 16 from rotating counterclockwise when the link member 50 is in a substantially horizontal state as shown in FIG. 19 is formed.

Similarly, the pivot bracket 12 is provided with a structure that contacts the disengagement member 16 so that the disengagement member 16 does not rotate clockwise when the link member 50 swings significantly into the upright position as shown in FIG. A protrusion 19a for a stopper to be in contact with is formed.

Next, the action will be explained.

In FIG. 2, the movable cushion body 30
is in a substantially horizontal state like the fixed-side cushion body 20, and the inner end 21 of the fixed-side cushion body 20 and the inner end 31 of the movable-side cushion body 30 are close to each other, and are integral with each other. You can use this in the same way as a horizontal seat cushion.

To tilt the movable cushion body 30 from the approximately horizontal state shown in FIG. 2 to the resting state shown in FIG. Part 4
2 moves relatively along the guide groove 33, and at the same time, one end 51 of the link member 50 rotates clockwise about the pivot 13 in FIG. is tilted counterclockwise in FIG. 2 around the vicinity of the upper portion 32 of the inner end 31 thereof.

The upper part 32 of the inner end 31 of the cushion body 30 on the movable side is the center of tilting and does not displace significantly, and the upper part 32 of the inner end 31 of the cushion body 30 on the fixed side
Since it is displaced while keeping a constant distance from the upper part 22 of the upper part 22, there is no interference therewith.

When the one end 51 of the link member 50 tilts clockwise about the pivot 13, the claw members 55 mesh with the teeth 15 one after another while pushing the guiding inclined edge 18 of the disengagement member 16. As a result, the engagement release member 16 rotates clockwise about the pivot 13, and the stopper protrusion 19a and the engagement release member 1
The distance to the contact portion of No. 6 is reduced.

When the outer end 36 of the movable cushion body 30 is stopped in the desired resting state, the claw member 55 engages the teeth 15 as shown in FIG.
, one end 51 of the link member 50 is restrained from rotating counterclockwise about the pivot 13, whereby the movable cushion body 30
is maintained in the desired resting state shown in FIG.

When the user sits on the movable cushion body 30 in the resting state, the seating surface of the seat cushion 20a is smooth and wrinkles do not come into contact with the lumbar vertebrae, allowing the user to rest comfortably.

In order to bring the movable cushion body 30 from the resting state shown in FIG. 1 to the substantially horizontal state shown in FIG. When lifted significantly, the one end 51 of the link member 50 further rotates clockwise around the pivot 13, and the disengagement member 16 eventually disengages from the stopper protrusion 19a.
comes into contact with.

Further, one end 51 of the link member 50 is connected to the pivot 1
3 further clockwise, the claw member 55 is pushed up by the guiding inclined edge 18 and swings against the biasing force of the spring member 16a, as shown in FIG. It rides on the outer peripheral edge 17.
As a result, the claw member 55 is not engaged with the tooth portion 15, and the one end portion 51 of the link member 50 is able to rotate counterclockwise about the pivot shaft 13.

Next, the outer end 3 of the cushion body 30 on the movable side
6 is lowered, one end 51 of the link member 50 rotates counterclockwise around the pivot 13, and accordingly, the disengagement member 16 rotates counterclockwise around the pivot 13. It comes into contact with the stopper protrusion 19 and cannot be rotated counterclockwise.
Back and forth, the pin member 42 of the guided member 40 moves along the guide groove 33.

Further, one end 51 of the link member 50 is connected to the pivot 1
3 in the counterclockwise direction, the pawl member 55 slides down the outer circumferential edge 17 and the guiding sloped edge 18, and engages with the first tooth portion 35 as shown in FIG. After moving back and forth, the movable cushion body 30 assumes the substantially horizontal state shown in FIG. 2, and returns to substantially the same state as the one-piece horizontally elongated seat cushion.

"Effect of the invention" According to the vehicle seat according to the invention, when changing the horizontally long seat cushion from the normal approximately horizontal state to the resting state, the cushion body on the movable side
Since it is tilted around the upper part of the inner end, even in the resting state, the upper part of the inner end of the fixed cushion body and the inner end of the movable cushion body are tilted. It does not interfere with other parts of the body, does not cause wrinkles, improves the appearance, and allows you to sit comfortably without wrinkles on your lumbar vertebrae. Furthermore, since the structure that used to be a hinge is changed to a simple structure that includes a guide portion and a guided member that is relatively movable along the guide portion, the desired performance can be obtained with almost no increase in cost.

[Brief explanation of the drawing]

1 to 5 show an embodiment of the present invention, in which FIG. 1 is a front view of a vehicle seat, FIG. 2 is a front view of the vehicle seat, and FIGS. A front view showing the vicinity of one end, FIGS. 6 and 7 show conventional examples, and are respectively front views of the vehicle seat. 10... Vehicle floor (installation location), 20... Fixed side cushion body, 20a... Seat cushion, 21... Inner end, 30... Movable side cushion body, 31... Inner end , 32... upper part, 33... guide groove (guide part), 34... middle part, 40... guided member, 50... link member, 51... one end part, 52... other end part.

Claims (1)

[Scope of Claim for Utility Model Registration] A vehicle seat comprising a horizontally elongated seat cushion attached to an installation location, wherein the seat cushion is composed of a cushion body on a fixed side and a cushion body on a movable side; The cushion body and the cushion body on the movable side are arranged side by side at an installation location so that their inner ends are close to each other, and the cushion body on the movable side is placed at one of the installation location and the cushion body on the movable side. A generally arcuate guide part centered near the upper part of the inner end of the body is provided, and a guided member movable relatively along the guide part is mounted on the other side, and the guide part and the covered member are mounted on the other side. and a guide member disposed so that when the movable cushion body raises its outer end and tilts, the inner end moves past the adjacent end of the fixed cushion body, The proximal end of the link member is rotatably connected to the installation location so that the movable cushion body can tilt around the upper portion of the inner end between a substantially horizontal state and an inclined resting state. At the same time, the distal end portion of the link member is rotatably connected to the intermediate portion of the movable cushion body in the inner and outer direction, and the movable cushion body is held in a desired resting state without being tiltable. A vehicle seat, characterized in that a restraining mechanism is installed that restrains one of the base end portion or the distal end portion of the link member to be unrotatable.