JP2019209805A - Vehicle seat - Google Patents

Abstract

To make it possible to rationally and functionally adjust a support form for the body of a seated occupant.SOLUTION: A vehicle seat 1 has: a top plate part 10 supporting the body of a seated occupant; and an angle adjustment mechanism 20 that is able to adjust an angle at which the body is supported by the top plate part 10. The top plate part 10 has, in a connected form, a rear-side top plate part 10A supporting the back of the seated occupant and a buttocks-side top plate part 10B supporting the buttocks. The angle adjustment mechanism 20 has: a back-side height adjustment unit 20A that couples the back-side top plate 10A to a vehicle floor F so as to be movable in a seat height direction; a buttocks-side height adjustment unit 10B similarly coupling the buttocks-side top plate 20B so as to be movable in the seat height direction; and an inclining operation unit 20C that inclines an upright angle of the back-side top plate part 10A by operating so as to increase the coupling interval, in seat forward and backward directions, between the back-side height adjustment unit 20A of the top plate part 10 and the buttocks-side height adjustment unit 20B through downward movements of the back-side top plate 10A and the buttocks-side top plate 10B by both the adjustment parts 20A, 20B.SELECTED DRAWING: Figure 5

Description

  The present invention relates to a vehicle seat. Specifically, the present invention relates to a vehicle seat having a top plate portion that supports a body of a seated occupant and an angle adjustment mechanism that can adjust a support angle of the body of the seated occupant by the top plate portion.

  2. Description of the Related Art Conventionally, in a vehicle seat, a structure in which a form of a top plate portion that supports a back portion and a butt portion of a seated occupant can be individually adjusted is known (Patent Document 1). Specifically, the seat cushion angle with respect to the floor of the seat cushion and the backrest angle with respect to the seat cushion of the seat back can be individually adjusted, and the support form of the seated occupant's body can be changed by a combination of these movements. Can be done.

JP 2017-170942 A

  In the above prior art, it is necessary to individually adjust the seat cushion angle of the seat cushion and the backrest angle of the seat back, and both angles cannot be rationally adjusted according to various usage scenes. The present invention has been devised as a solution to the above-mentioned problems, and the problem to be solved by the present invention is to enable rational and functional adjustment of the support form of the seated occupant's body by the vehicle seat. Is to make it.

  In order to solve the above problems, the vehicle seat of the present invention takes the following means.

  1st invention is a vehicle seat which has a top-plate part which supports the body of a seated occupant, and an angle adjustment mechanism which can adjust the support angle of the body of a seated occupant by a top-plate part. The top plate portion has a back side top plate portion that supports the back portion of the seated occupant and a butt side top plate portion that supports the bottom portion of the seated occupant. An angle adjustment mechanism connects the back side top plate part so as to be movable in the seat height direction with respect to the vehicle floor, and the bottom side top plate part in the seat height direction with respect to the vehicle floor. With the butt side height adjustment part, the back side height adjustment part and the butt side height adjustment part movably connected, the back side top plate part and the butt side top board part are directed from the position of the normal posture to the vehicle floor. The vertical movement of the top plate part to the back height adjustment part of the top plate part and the height adjustment part in the seat front-rear direction are expanded by the movement to drop, and the standing angle of the back top part is directed to the vehicle floor And a depressing operation unit for depressing.

  According to the first aspect of the invention, the back-side top plate of the top plate portion that is connected to each other regardless of which of the back-side height adjustment portion and the buttocks-side height adjustment portion of the angle adjustment mechanism is operated. The angle can be changed by moving both the top and bottom side top plate portions. Therefore, the support form of the seated occupant's body can be rationally and functionally adjusted by the back-side height adjustment unit and the buttocks-side height adjustment unit. In addition, the top plate can be placed on the vehicle floor by being able to lie down on the vehicle floor at a position lower than the position of the normal posture by the tilting operation unit. It is possible to switch to a compact form that has been submerged.

  The second invention is the following configuration in the first invention described above. The butt side height adjustment part and the tilting action part are composed of a link that is swingably connected in the seat front-rear direction between the butt side top plate part and the vehicle floor. The plate part is moved forward while dropping toward the vehicle floor to widen the above-mentioned inter-connection dimensions.

  According to the second aspect of the present invention, the butt side height adjusting unit and the tilting operation unit are composed of the link connected between the butt side top plate and the vehicle floor, so that the butt side height adjusting unit and the tilting operation unit are rotated forward. However, it can be set as the non-bulky structure which can drop a bottom side top-plate part toward a vehicle floor.

  The third invention is the following configuration in the second invention described above. The angle adjustment mechanism drops the back-side top plate portion and the bottom-side top plate portion onto the vehicle floor in a flat shape by the forward tilting of the link and the dropping of the bottom-side height adjusting portion.

  According to the third aspect of the invention, the top plate portion can be dropped into a more compact shape on the vehicle floor.

  A fourth invention is the following configuration in the above-described second or third invention. When the link is in the normal posture position, the standing angle of the backward tilting posture is set, and the back side top plate portion connected to the buttocks side top plate portion by the forward tilting rotation to the standing angle that becomes the forward tilting posture is pulled forward and the back is turned. Lay the standing angle of the side top plate.

  According to the fourth aspect of the present invention, the standing angle of the back-side top plate portion can be lowered without greatly reducing the seat surface height of the bottom-side top plate portion due to the forward tilting rotation of the link. Therefore, the standing angle of the back side top plate portion can be laid down without making the bottom side top plate portion bottom on the vehicle floor, so that the top plate portion can be easily placed in an easy posture.

  According to a fifth invention, in any of the first to fourth inventions described above, the following configuration is adopted. The top plate portion further includes a hinge portion for pin-connecting the back side top plate portion and the buttocks side top plate portion so as to be rotatable with respect to each other.

  According to the fifth aspect of the present invention, the back side top plate portion and the buttocks side top plate portion of the top plate portion can be appropriately supported with the respective frames. Angle adjustment with a top plate part and a buttocks side top plate part can be performed appropriately.

1 is a perspective view illustrating a schematic configuration of a vehicle seat of Example 1. FIG. It is a side view showing the state of the normal posture of the vehicle seat. It is the III-III sectional view taken on the line of FIG. It is a side view showing the state where the vehicle seat was switched to an easy posture. It is a side view showing the state where the vehicle seat was switched to the sleeping position. It is a side view showing the state where the vehicle seat was switched to a flat posture.

  EMBODIMENT OF THE INVENTION Below, the form for implementing this invention is demonstrated using drawing.

<< General configuration of vehicle seat >>
First, the configuration of the seat 1 (vehicle seat) according to the first embodiment will be described with reference to FIGS. In the following description, when directions such as front / rear, up / down, left / right, and the like are indicated, the directions shown in the drawings are indicated. In addition, the “sheet width direction” indicates the left-right direction in the sheet 1, and the “sheet height direction” indicates the vertical direction in the sheet 1.

  As shown in FIG. 1, the seat 1 of the present embodiment is configured as a seat of an automobile, and the top plate portion 10 that supports the body of the seated occupant and the support angle of the body of the seated occupant by the top plate portion 10. And an adjustable angle adjustment mechanism 20. The top plate 10 described above is configured to have a back top plate 10A that supports the back of the seated occupant and a bottom top plate 10B that supports the bottom of the seat occupant. .

<< About the structure of the top plate part 10 >>
Specifically, the top plate part 10 described above includes a metal side frame 11 constituting the left and right side skeletons, and a planar member 12 stretched between the side frames 11 in a bridging manner. Is schematically configured. Specifically, the above-described side frame 11 includes a back side frame 11A that forms the left and right side skeletons of the back top plate portion 10A, and a butt side frame 11B that forms the left and right side frames of the butt side top plate portion 10B. And a hinge portion 11C for pin-connecting the back side frame 11A and the butt side frame 11B to each other so as to be rotatable around a coaxial line extending in the seat width direction.

  Further, the planar member 12 is made of a resin material provided on a stretched region of the net member 12A having elasticity capable of elastically supporting the load of the seated occupant and the back side top plate portion 10A of the net member 12A. A flat plate-like back panel 12B and a resin flat plate-like bottom panel 12C provided on the stretched region of the bottom plate 10B of the net 12A are configured. The above-described planar member 12 is seated on the back panel 12B and the buttocks panel 12C in such a manner that the back and buttocks of the seated occupant are respectively brought into contact with the back panel and the buttocks. The received body pressure is received by the back panel 12B and the buttocks panel 12C in a widely dispersed manner in the in-plane direction (see FIG. 3).

  Moreover, as shown in FIG. 1, the area | region where only the net | network material 12A above the arrangement | positioning area | region of the back side panel 12B of the planar member 12 mentioned above was stretched can lean the head of a seated passenger | crew. The head support area 12D is used. In the head support region 12D described above, the head of the seated occupant can be elastically received in the form of being submerged deeper than the support position by the back panel 12B by the bending of the net member 12A.

<< Configuration of Angle Adjustment Mechanism 20 >>
As shown in FIGS. 2 and 4 to 6, the angle adjustment mechanism 20 is capable of moving up and down in the seat height direction with respect to the vehicle floor F (vehicle floor) at the upper end portion of the back-side top plate portion 10A. A back-side height adjusting unit 20A to be connected, and a bottom-side height adjusting unit 20B that connects the front end of the bottom-side top plate 10B to the vehicle floor F so as to be movable in the seat height direction. Further, the angle adjusting mechanism 20 moves the back side top plate portion 10A and the bottom side top plate portion 10B toward the vehicle floor F by the back side height adjusting unit 20A and the bottom side height adjusting unit 20B described above. Is operated to widen the connecting dimension in the seat front-rear direction with respect to the back-side height adjusting unit 20A and the buttocks-side height adjusting unit 20B of the top plate part 10 described above. 20C has a fall-down operation unit 20C that falls down toward the vehicle floor F.

  The above-described back-side height adjusting unit 20A is configured by a pair of left and right telescopic rods 21 that connect the upper ends of the above-described left and right dorsal side frames 11A and the vehicle floor F, as shown in FIGS. Has been. The rods 21 described above are integrally fixed at positions where their lower end portions are embedded under the vehicle floor F, and the upper end portions of the corresponding rear side frames 11A are seated by the rotary shaft 21A. It is configured to be pin-connected so as to be rotatable around a coaxial line extending in the width direction. As shown in FIGS. 2 and 4 to 6, each of the rods 21 described above is extended to extend vertically from the vehicle floor F or sinks under the vehicle floor F by driving an electric actuator (not shown). It is designed to be shrunk into a hollow shape, and the extension length can be freely adjusted.

  Also, as shown in FIGS. 1 and 2, the butt side height adjusting portion 20B is formed by a pair of left and right oscillating links 22 that connect the front ends of the left and right butt side frames 11B and the vehicle floor F as described above. It is configured. Each of the links 22 described above is connected to the vehicle floor F so that the lower end of the link 22 can be driven and rotated around a coaxial line extending in the seat width direction by the rotating shaft 22B, and the upper end of each link 22 corresponds to the corresponding bottom side frame 11B. The front end portion is pin-connected by a rotating shaft 22A so as to be rotatable around a coaxial line extending in the sheet width direction. As shown in FIGS. 2 and 4 to 6, each link 22 described above is moved back and forth around a rotating shaft 22 </ b> B connected to the vehicle floor F on the lower end side thereof by driving an electric actuator (not shown). The swing angle in the direction can be freely adjusted.

  As shown in FIGS. 1 to 2, the angle adjustment mechanism 20 having the above-described configuration can change the support form of the body of the seated occupant by the top plate portion 10 by the operation combining the rods 21 and the links 22 described above. It can be changed as follows. That is, as shown in FIGS. 1 to 2, for example, when the seated occupant is seated in the normal posture M1, the angle adjusting mechanism 20 extends the rods 21 to the maximum to the upper side, and each link 22 from the upright position. As for the posture of the standing angle tilted backward, the back-side top panel 10B is set to a sigh angle (about 10 degrees rising) while the back-side top panel 10A is set to a standing angle close to the torso angle (back tilting angle of about 20 degrees). It is possible to make the lodging angle close to (angle).

  Then, the angle adjusting mechanism 20 described above is configured so that the extension lengths of the rods 21 are shortened from the state of the normal posture M1 described above, and the upper end portions (rotating shafts) of the left and right dorsal side frames 11A are shortened as shown in FIG. 21A) is lowered, and each link 22 is rotated to a posture position of an upright angle that tilts forward rather than upright, so that the back-side top plate portion 10A is laid down from the previous upright angle and the butt-side top plate portion 10B. The rear end is lowered, and the hip-side top plate portion 10B can be switched to the state of the comfortable posture M2 raised from the previous rising angle.

  More specifically, the angle adjusting mechanism 20 described above is configured so that the above-described top side is changed by the forward rotation of each link 22 for switching the above-described top panel 10 from the normal posture M1 shown in FIG. 2 to the comfortable posture M2 shown in FIG. By operating the front end of the top plate portion 10B to the front side, the lower end portion of the back side top plate portion 10A connected to the butt side top plate portion 10B via the hinge portion 11C is made to stand upright at an upright angle. It is supposed to be laid down. In addition, the angle adjusting mechanism 20 rotates each link 22 to the same tilt angle from the backward tilted posture to the forward tilted posture by the forward rotation of each link 22 described above, so that the front end of the buttocks side top plate portion 10B. Without significantly lowering the height position of the section, the height position of the rear end section 10B can be lowered as the rods 21 are contracted to increase the rising angle of the bottom section top section 10B. It can be done.

  Further, as shown in FIG. 5, the angle adjusting mechanism 20 described above further shortens the extension length of each rod 21 from the state of the comfort posture M2 described above and rotates the upper ends (rotations) of the left and right dorsal side frames 11A. While lowering the position of the shaft 21A) and rotating each link 22 to an angular position further tilted forward than the previous forward tilted posture, the back side top plate portion 10A is further laid down more than the previous standing angle and the butt The rising angle of the side top panel 10B can be switched to the sleeping posture M3 that is moved in a forward sliding manner at an angle similar to the previous rising angle.

  Further, the angle adjusting mechanism 20 described above is configured so that the extension lengths of the rods 21 are further shortened from the state of the sleeping posture M3 described above, and the upper ends (rotations) of the left and right dorsal side frames 11A are rotated. The position of the shaft 21A) is lowered to the position on the vehicle floor F, and each link 22 is rotated from the previous forward leaning position to the angular position of the lying down posture dropped onto the vehicle floor F, whereby the back side top plate portion 10A. And the bottom-side top plate 10B can be switched to a flat posture M4 in which the bottom floor 10B is submerged with the vehicle floor F.

  That is, the angle adjusting mechanism 20 described above is configured such that each link 22 is dropped onto the vehicle floor F by forward rotation because the above-described bottom side height adjusting unit 20B is configured by each link 22. Along with this, the back side height adjustment part 20A and the bottom side height adjustment part 20B of the top plate part 10 described above operate to widen the dimension in the longitudinal direction of the seat, and the back side top plate part 10A It has a structure in which a tilting operation unit 20C that operates to tilt the standing angle toward the vehicle floor F is configured.

<Summary>
In summary, the sheet 1 of the present embodiment has the following configuration. That is, a vehicle seat (1) having a top plate portion (10) for supporting the body of the seated occupant and an angle adjusting mechanism (20) capable of adjusting a support angle of the body of the seated occupant by the top plate portion (10). ). The top plate (10) has a back top plate (10A) that supports the back of the seated occupant and a bottom top plate (10B) that supports the bottom of the seated occupant.

  An angle adjustment mechanism (20) connects the back side top plate (10A) to the vehicle floor (F) so as to be movable in the seat height direction, and a back side top plate A butt side height adjustment unit (20B), a back side height adjustment unit (20A), and a butt side height adjustment unit that connect the portion (10B) to the vehicle floor (F) so as to be movable in the seat height direction. (20B) to drop the back-side top plate portion (10A) and the bottom-side top plate portion (10B) from the position of the normal posture (M1) toward the vehicle floor (F). The vertical angle of the back-side top plate (10A) is set to the vehicle floor (10A) by increasing the connecting dimension in the seat front-rear direction with respect to the back-side height adjusting unit (20A) and the butt-side height adjusting unit (20B). F) and a tilting operation unit (20C) that tilts toward F).

  With such a configuration, even if either the back side height adjustment unit (20A) or the buttocks side height adjustment unit (20B) of the angle adjustment mechanism (20) is operated, the angle adjustment mechanism (20) is connected to each other. It is possible to change the angle by moving both the back side top plate portion (10A) and the bottom side top plate portion (10B) of the top plate portion (10) forming a shape. Accordingly, the support form of the seated occupant's body can be rationally and functionally adjusted by the back side height adjustment unit (20A) and the buttocks side height adjustment unit (20B). In addition, the back-side top plate portion (10A) and the butt-side top plate portion (10B) are each laid on the vehicle floor (F) at a position lower than the normal posture (M1) by the tilting operation portion (20C). Can be switched to a compact form in which the top plate (10) is sunk on the vehicle floor (F).

  Further, the butt side height adjusting portion (20B) and the tilting operation portion (20C) are connected to the butt side top plate portion (10B) and the vehicle floor (F) so as to be swingable in the seat longitudinal direction. The link (22) is moved forward while the bottom side top plate portion (10B) is dropped toward the vehicle floor (F) by the forward tilting rotation of the link (22), thereby widening the dimension between the connections. As described above, the butt side height adjusting part (20B) and the tilting operation part (20C) are composed of the link (22) connected between the butt side top plate part (10B) and the vehicle floor (F). Thus, it is possible to adopt a non-bulky configuration in which the bottom side top plate (10B) can be dropped toward the vehicle floor (F) while rotating itself forward and rotating.

  Further, the angle adjusting mechanism (20) causes the back top plate (10A) and the bottom top plate (10B) to be moved by the forward tilting of the link (22) and the dropping of the bottom height adjusting unit (20B). Drop it flat on the vehicle floor (F). By setting it as such a structure, a top-plate part (10) can be dropped in a compact form on a vehicle floor (F).

  Further, the link (22) is set to the standing angle of the backward tilting posture at the position of the normal posture (M1), and is connected to the buttocks top plate (10B) by the forward tilting rotation to the standing angle that becomes the forward tilting posture. The back side top plate part (10A) is pulled forward, and the standing angle of the back side top plate part (10A) is laid down. With such a configuration, the standing angle of the back side top panel (10A) can be increased without greatly lowering the seat surface height of the bottom side top panel (10B) by the forward tilting rotation of the link (22). Can be laid down. Accordingly, the top plate (10) is placed in the comfortable posture (M2) by laying the standing angle of the back top plate (10A) without bottoming the bottom plate (10B) on the vehicle floor (F). It can be made easier.

  Moreover, the top plate portion (10) further includes a hinge portion (11C) for pin-connecting the back-side top plate portion (10A) and the buttocks-side top plate portion (10B) so as to be rotatable with respect to each other. By adopting such a configuration, the back-side top plate portion (10A) and the buttocks-side top plate portion (10B) of the top plate portion (10) can be appropriately supported with respective frames. In accordance with the operation of the angle adjustment mechanism (20), the angle adjustment between the back side top plate portion (10A) and the bottom side top plate portion (10B) can be appropriately performed.

<< About other embodiments >>
As mentioned above, although the embodiment of the present invention has been described using one example, the present invention can be implemented in various forms in addition to the above example. For example, the configuration according to the vehicle seat of the present invention can be widely applied to a vehicle used for various vehicles such as an aircraft and a ship, in addition to a vehicle other than an automobile such as a railway.

  In addition, the angle adjustment mechanism is configured such that the back side height adjustment unit is configured to connect the back side top plate part to the vehicle floor so as to be movable in the seat height direction and the seat front-rear direction. It may be the structure which comprises a fall operation | movement part. In addition, the back height adjustment part and the butt side height adjustment part are a combination of a long hole and a pin or a slidable connection structure by a slide rail, so that the seat height of the back side top part and the bottom side top part is provided. You may adjust the position of a direction. Further, the angle adjustment mechanism may be one that operates the back side height adjustment unit and the buttocks side height adjustment unit with an electric drive structure, respectively, or with a manual operation structure. Further, the angle adjusting mechanism may be a stepless type adjusting mechanism in addition to a stepped type adjusting the position of the back side top plate part and the buttocks side top plate part in the seat height direction.

  Moreover, the top plate part should just be the structure connected to the form which can change the angle which a back | dorsal top plate part and a buttocks side top plate part mutually form, and the whole bends like what is called a hammock. It may be configured to have no hinge.

1 seat (vehicle seat)
DESCRIPTION OF SYMBOLS 10 Top plate part 10A Back side top plate part 10B Bottom side top plate part 11 Side frame 11A Back side frame 11B Bottom side frame 11C Hinge part 12 Planar member 12A Net material 12B Back side panel 12C Bottom side panel 12D Head Support area 20 Angle adjustment mechanism 20A Back side height adjustment unit 20B Bottom side height adjustment unit 20C Inclining operation unit 21 Rod 21A Rotating shaft 22 Link 22A Rotating shaft 22B Rotating shaft F Vehicle floor (vehicle floor)
M1 Normal posture M2 Comfortable posture M3 Sleeping posture M4 Flat posture

Claims (5)

A vehicle seat having a top plate portion that supports the body of a seated occupant, and an angle adjustment mechanism that can adjust a support angle of the body of the seated occupant by the top plate portion,
The top plate portion has a back side top plate portion that supports the back of the seated occupant and a bottom side top plate portion that supports the bottom of the seated occupant,
The angle adjustment mechanism is configured to connect the back-side top plate portion to the vehicle floor so as to be movable in the seat height direction, and the butt-side top plate portion to the vehicle floor. The back side top plate part and the back side top plate part are usually connected by a butt side height adjustment unit that is movably connected in the height direction, the back side height adjustment unit, and the butt side height adjustment unit. The movement of dropping from the position of the posture toward the vehicle floor operates to widen the connecting dimension in the seat front-rear direction with respect to the back-side height adjustment portion and the bottom-side height adjustment portion of the top plate portion, and A vehicle seat, comprising: a tilting operation unit that tilts an upright angle of the back side top plate portion toward the vehicle floor. The vehicle seat according to claim 1,
The butt side height adjustment unit and the tilting operation unit are formed by a link connected to the butt side top plate unit and the vehicle floor so as to be swingable in the seat front-rear direction. A vehicle seat that moves forward by moving the bottom side top plate portion toward the vehicle floor by rotation to widen the dimension between the connections. The vehicle seat according to claim 2,
The vehicle seat in which the angle adjusting mechanism drops the back-side top plate portion and the bottom-side top plate portion onto the vehicle floor in a flat manner by the forward tilting of the link and the dropping of the bottom-side height adjusting portion. . The vehicle seat according to claim 2 or claim 3,
At the position of the normal posture, the link has an upright angle in a backward tilt posture, and the back side top plate portion connected to the buttocks side top plate portion by forward tilting rotation to an upright angle that becomes a forward tilt posture is forward. A vehicle seat that is pulled into the seat and lays the standing angle of the back-side top plate portion. The vehicle seat according to any one of claims 1 to 4, wherein
The vehicle seat, wherein the top plate portion further includes a hinge portion that pin-couples the back-side top plate portion and the bottom-side top plate portion so as to be rotatable with respect to each other.

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