JP4816108B2 - Seat assembly support mechanism and vehicle seat system - Google Patents

Description

  The present invention relates to a technical field of a seat assembly support mechanism and a vehicle seat system for supporting a seat assembly including a seat in a vehicle.

  As this type of mechanism, a mechanism that drives a sheet by an actuator has been proposed (for example, see Patent Document 1). According to the method and apparatus for controlling the inclination of an automobile seat disclosed in Patent Document 1 (hereinafter referred to as “prior art”), the seat surface of the automobile seat acts on the seat in a plane perpendicular to the traveling direction. By controlling the inclination of the seating surface with an actuator so that it is actually perpendicular to the direction of acceleration, it is said that the lateral acceleration during traveling of the automobile can be reliably supported.

JP 2001-163098 A

  When the vehicle turns, the seat rolls due to the inertial force. However, when a drive mechanism such as an actuator is used for attitude control as in the prior art, the structure is inevitably enlarged and complicated. Increases are inevitable. That is, the conventional technique has a technical problem that it is difficult to efficiently and effectively suppress the sheet roll.

  The present invention has been made in view of the above-described problems, and it is an object of the present invention to provide a seat assembly support mechanism and a vehicle seat system capable of efficiently and effectively suppressing seat rolls. .

In order to solve the above-described problem, a seat assembly support mechanism according to the present invention is a seat assembly support mechanism for supporting a predetermined type of seat assembly including at least a seat in a vehicle, and the center of gravity of the seat as viewed from the front. When an angle formed by a load line connecting the attachment point to the seat assembly and the center of gravity with respect to a reference line extending vertically downward from θ ₁ is defined as θ ₁ (0 ° <θ ₁ <90 °), On the other hand, the sheet has a rigidity in a first direction that forms an angle θ ₂ (0 ° <θ ₂ <θ ₁ ) in the direction of the load line, which is larger than a rigidity in a second direction orthogonal to the first direction. It is characterized by comprising a supporting means attached to the assembly and a base for supporting the sheet assembly via the supporting means.

  In the present invention, the “seat assembly” includes at least a single sheet. In some cases, in order to fix the single sheet to a vehicle, it can be configured integrally with the seat or attached to the sheet, and physically supported by the support mechanism according to the present invention. It is a concept including various members, mechanisms, and the like that can be supported.

  According to the seat assembly support mechanism of the present invention, in operation, for example, a seat rail for fixing the seat and the seat, or a seat rail that accommodates the fixing portion and supports the seat movably in the vehicle front-rear direction. The load of the seat assembly including the load and the load of the occupant sitting on the seat are supported by the base via the support means attached to the seat assembly.

Here, the support means, the angle formed between the reference line load line connecting the center of gravity of the attachment points and the sheet of the sheet assembly to look at the seat from the front is extended vertically downward from the center of gravity when the theta _1, The rigidity of the first direction forming an angle θ ₂ (0 ° <θ ₂ <θ ₁ ) from the reference line to the load line is larger than the rigidity of the second direction orthogonal to the first direction. Attached to assembly.

  “Rigidity” according to the present invention is a concept representing a degree of resistance to deformation caused by an external force when an external force is applied. The state in which the rigidity in the first direction is larger than the rigidity in the second direction may be realized, for example, by defining mutually different elastic coefficients in the respective directions. Further, in view of the concept of stiffness, even if various index values such as elastic modulus and Young's modulus that can define the stiffness are equal, by changing the thickness and shape in each direction, It is also possible to give different rigidity to the.

  The “center of gravity of the sheet” according to the present invention is not limited to the center of gravity of the single sheet, and is, for example, the center of gravity of the sheet assembly according to the present invention including some means that can be substantially regarded as integral with the sheet. In addition, in view of actual use conditions, it may be a center of gravity or the like that takes into account the mass, posture, seating position, etc. of the occupant seated on the seat.

  On the other hand, the force acting on the attachment point when the vehicle turns or the like can be decomposed into a component force in the first direction and a component force in the second direction, respectively. In view of the definition, the direction of the force acting in the second direction is outside the turning direction and above the horizontal direction.

  Here, in particular, according to the support mechanism of the seat assembly according to the present invention, the rigidity in the second direction of the support means is set to be smaller than the rigidity in the first direction. In the vicinity of the attachment point with the means, the displacement in the second direction is urged. The displacement is a direction that cancels out the inertial force that acts in the direction of rolling the sheet with respect to the center of gravity of the sheet, and as a result, the roll of the sheet is suppressed by a physical force that acts on the support means when the vehicle turns. It will be. That is, according to the support mechanism of the sheet assembly according to the present invention, it is possible to efficiently and effectively suppress the roll of the sheet.

  In one aspect of the seat assembly support mechanism according to the present invention, the support means includes a plurality of elastic bodies having different rigidity, and the attachment point is a point to which an elastic body having the highest rigidity is attached. And (ii) receiving the component force in the first direction among the forces acting on the attachment point via the elastic body having the highest rigidity, and (ii) acting on the attachment point. The seat assembly is supported by receiving a component force in the second direction of the force through other elastic bodies excluding the elastic body having the highest rigidity among the elastic bodies.

  According to this aspect, the support means includes a plurality of elastic bodies, and the base body receives the above-described component force in the first direction via the elastic body having the highest rigidity, and the other component force in the second direction. The seat assembly is supported by receiving it through an elastic body. Accordingly, the force acting on the attachment point (the point at which the elastic body having the highest rigidity is attached) can be efficiently dispersed and absorbed by the plurality of elastic bodies, and the roll of the sheet can be effectively suppressed.

  In this aspect, the base includes a rail portion extending in the front-rear direction of the vehicle, and the support means is disposed in the rail portion and supports the seat assembly so as to be movable in the front-rear direction. May be included.

  In this case, the seat assembly can be moved in the front-rear direction of the vehicle in the rail portion, which is at least part of the base body, by the roller part, which is at least part of the support means, and is efficient.

  In another aspect of the seat assembly support mechanism according to the present invention, the support means includes an outer cylinder part and an inner cylinder part that are concentrically cylindrical and extend in the front-rear direction of the vehicle. A part of the outer wall portion forms the attachment point, and the inner cylinder part is fixed to the base body, and at least a part of the space between the outer cylinder part and the inner cylinder part is in the space. The elastic body is filled so that the rigidity in the first direction penetrating at least part of the inner cylinder part is larger than the rigidity in the second direction penetrating at least part of the inner cylinder part.

  According to this aspect, the support means includes the outer cylinder part and the inner cylinder part that are concentric cylinders with each other and the elastic body filled in the space between them, and is fixed to the base body in the inner cylinder part. On the other hand, the attachment point of the seat assembly forms a part of the outer wall of the outer cylinder part, and the force acting on the attachment point has the rigidity in the first direction penetrating at least a part of the inner cylinder part. Is transmitted to the base via an elastic body filled in a space between the outer cylinder part and the inner cylinder part so as to be larger than the rigidity in the second direction penetrating at least a part of the cylinder.

  Therefore, the above-described component force in the second direction acts in a direction with relatively low rigidity in the integrally formed support means, and the sheet assembly is displaced in a direction to suppress the roll of the sheet. That is, it becomes possible to efficiently and effectively suppress the sheet roll.

  In this aspect, a portion of the space corresponding to the second direction penetrating at least a part of the inner cylinder portion may be a cavity.

  The rigidity in the second direction described above only needs to be small compared to the rigidity in the first direction. In an extreme case, the space corresponding to the second direction is not filled with anything. The effect according to the present invention is suitably secured. In this case, an effect of cost reduction can be expected, which is economical.

  In another aspect of the seat assembly support mechanism according to the present invention, the support means includes (i) a rigid body portion having the attachment point, and (ii) the rigid body sandwiched between the rigid body portion and the base body. A thin plate-like elastic body portion having a rigidity lower than that of the portion, and the rigid body portion and the base have a shape in which the thickness direction of the elastic body portion is the first direction when the elastic body portion is sandwiched. Has been determined to be.

  According to this aspect, the support means includes the rigid body portion and the thin plate-like elastic body portion, and the shape of the rigid body portion and the base body is such that the elastic body portion is sandwiched between them, and the thickness direction of the elastic body portion is It is determined to be in the first direction. Since the elastic body portion has a thin plate shape, the rigidity in the thickness direction, that is, the first direction is inevitably higher than the rigidity in the second direction. According to this aspect, such different rigidity in each direction is given by the shapes of the rigid body portion and the base body portion, which is efficient.

  In order to solve the above-described problem, a vehicle seat system according to the present invention includes the seat assembly support mechanism according to any one of the above and the seat assembly.

  According to the vehicle seat system of the present invention, since the seat assembly is supported by any one of the above-described seat assembly support mechanisms, for example, when the vehicle turns, the roll of the seat is efficiently and effectively suppressed.

  Such an operation and other advantages of the present invention will become apparent from the embodiments described below.

<Embodiment of the Invention>
Hereinafter, various preferred embodiments of the present invention will be described with reference to the drawings as appropriate.

<First Embodiment>
<Configuration of Embodiment>
First, the configuration of the seat system according to the first embodiment of the present invention will be described with reference to FIG. FIG. 1 is a schematic diagram of the seat system 10.

  In FIG. 1, a seat system 10 is installed on a chassis 16 and includes a seat assembly 11 and support mechanisms 100L and 100R. The seat system 10 seats an occupant in a vehicle (not shown). It is an example of a “system”. FIG. 1 shows a state in which the sheet assembly 11 is viewed from the front.

  The seat assembly 11 is an example of the “seat assembly” according to the present invention, and includes a headrest portion 12, a backrest portion 13, a seat surface portion 14, and fixing portions 15L and 15R.

  The headrest portion 12, the backrest portion 13, and the seat surface portion 14 generally constitute an example of a “vehicle seat” according to the present invention, and are configured to support the head, upper body, and lower body of the occupant who mainly sits. Hereinafter, the expression “sheet” will be used as appropriate as the overall concept.

  The fixing portions 15L and 15R are substantially T-shaped fixing members with their ends fixed to the lower portion of the seating surface portion 14, and the seats are accommodated in rail portions 130L and 130R, which will be described later, respectively. The assembly 11 is configured to be able to move in a direction perpendicular to the paper surface in FIG. 1 (that is, the front-rear direction of the vehicle).

  The support mechanism 100L is an example of the “sheet assembly support mechanism” according to the present invention, which is installed on the right side of the seat assembly 11 in the illustrated vehicle width direction (that is, on the left side of the vehicle). The roller 120L, the rail part 130L, and the base 140L are provided. Similarly, the support mechanism 100R is installed on the left side of the seat assembly 11 in the vehicle width direction (that is, the right side of the vehicle), and includes a first roller 110R, a second roller 120R, a rail portion 130R, and a base 140R, and the support mechanism 100L. In addition, it is configured to function as an example of the “sheet assembly support mechanism” according to the present invention. Note that the support mechanism 100L and the support mechanism 100R have functions equivalent to each other, and in the following description, only the support mechanism 100L will be described unless otherwise specified in order to prevent the description from becoming complicated. Shall be performed.

  A portion of the first roller 110L is in contact with the bottom of the fixed portion 15L, and is rotatably fixed to a rotation shaft (not shown) so that the fixed portion 15L can be slid in the vehicle front-rear direction. It is an elastic body having an elastic coefficient K1 (K1> 0) in the thickness direction (radial direction). The contact point PL between the first roller 110L and the fixed portion 15L is an example of the “attachment point” according to the present invention.

  The second roller 120L is fixed to a rotation shaft (not shown) so as to be able to slide a part of the second roller 120L in the front-rear direction of the vehicle while partly contacting the side part of the fixing part 15L. Further, the elastic body has an elastic coefficient K2 (K2 <K1) in the thickness direction (radial direction).

  In the seat system 10, the seat assembly 11 also slides in the front-rear direction of the vehicle as the fixing portion 15L (same for the fixing portion 15R) slides in the vehicle front-rear direction by the action of the first roller 110L and the second roller 120L. It is configured to be possible. The first roller 110L is an example of “an elastic body having the highest rigidity” according to the present invention, and the second roller 120L is an example of “another elastic body” according to the present invention.

  The rail portion 130L is a U-shaped housing member that houses the fixed portion 15L, and both side wall portions and the bottom portion are formed to be orthogonal to each other. The first roller 110L is supported on the bottom portion of the rail portion 130L, and the second roller 120L is supported on the side wall portion inside the sheet assembly 11 among the side wall portions of the rail portion 130L. The rail portion 130L is an example of a “base” according to the present invention that supports the sheet assembly 11 via the first roller 110L and the second roller 120L.

  The base 140L is an iron member that is fixed to the chassis 16 of the vehicle and configured to function as a base that supports the rail portion 130L. The base 140L is configured to function as an example of the “base” according to the present invention together with the rail portion 130L.

  The base 140L has a trapezoidal shape in which the upper side inclines from the horizontal line in FIG. 1. Therefore, the rail portion 130L fixed to the upper side is also fixed so that the opening portion is inclined toward the inside of the seat assembly 11. Has been.

The inclination of the base 140L is a reference in which a straight line extending in the direction of the normal line standing on the upper side of the base 140L in FIG. the angle theta ₂ formed by the line L1, to the reference line L1 as the relationship represented by the following equation (1) between the angle theta ₁ which the load line L2 connecting the center of gravity G and the contact point PL is formed is established It has been decided.

0 ° <θ ₂ <θ ₁ (1)
The rail portion 130L fixed to the base 140L is configured such that the bottom portion and the side wall portion are orthogonal to each other, so that the bottom portion receives the force acting in the first direction via the first roller 110L. The one side wall portion receives the force acting in the second direction orthogonal to the first direction via the second roller 120L.

<Operation of Embodiment>
Next, the operation of the support mechanism 100L will be described with reference to FIG. FIG. 2 is an equivalent schematic diagram of the seat assembly 11 and the support mechanisms 100L and 100R. In the figure, the same reference numerals are given to the same portions as those in FIG. 1, and the description thereof will be omitted as appropriate.

  In FIG. 2, the support mechanism 100 </ b> L can be considered as a spring fixed to one side wall portion and the bottom portion of the rail portion 130 </ b> L from the contact point PL shown at the right lower end portion of the seat assembly 11. That is, the first roller 110L is a spring having a spring constant K1, and the second roller 120L is equivalent to a spring having a spring constant K2.

  Here, with reference to FIG. 3, the operation of the support mechanism 100L when the vehicle is turning will be described. FIG. 3 is a schematic diagram showing the operation of the support mechanism 100L when the vehicle turns. 2 is an equivalent schematic diagram of the seat assembly 11 and the support mechanism 100L as in FIG. 2. In FIG. 2, the same reference numerals are given to the same parts as those in FIG. I will do it.

  In FIG. 3, when the vehicle turns in the illustrated turning direction, the inertia force Fi acts on the center of gravity G of the seat assembly 11 in the direction opposite to the turning direction (the turning outward direction). At this time, the resultant resultant force Ft acts on the contact point PL in the direction of the indicated load line L2 due to the load of the seat assembly 11 and the inertial force Fi.

  On the other hand, considering that the illustrated first direction and the second direction are orthogonal to each other, the resultant force Ft is decomposed into a component force Fd1 in the first direction and a component force Fd2 in the second direction. Is possible. The component force Fd1 in the first direction is received by the bottom portion of the rail portion 130L via the first roller 110L, and the component force Fd2 in the second direction is one side wall of the rail portion 130L via the second roller 120L. Accepted by the department.

  Here, the second direction shown in the figure is a direction that is wider than 90 ° with respect to the reference line L1 in view of the fact that the first direction is defined based on the above-described equation (1). Therefore, the component force Fd2 in the second direction is a force directed upward from the horizontal position. On the other hand, the rigidity of the second roller 120L (defined by the elastic coefficient K2 in the present embodiment) is smaller than the rigidity of the first roller 110L (defined by the elastic coefficient K1 in the present embodiment). 11 is urged to move in the second direction in the figure at the contact point PL.

  Since the displacement in the second direction is a direction that cancels out the sheet roll behavior (behind the turning direction (outward) and sinking downward) caused by the inertial force Fi acting on the center of gravity G. As a result of the displacement in the second direction, the sheet roll is suppressed.

  Here, with reference to FIG. 4 and FIG. 5 again, the effect which concerns on such this invention is demonstrated. 4 is a schematic diagram of an actual operation of the seat system 10, and FIG. 5 is a schematic diagram of a seat system 1000 according to a comparative example of the present embodiment. In these drawings, the same parts as those in FIG. 3 are denoted by the same reference numerals, and the description thereof will be omitted as appropriate.

  In FIG. 4, in the sheet system 10, since the sheet assembly 11 is displaced in a direction that cancels the roll behavior due to the inertial force Fi at the contact point PL, the displacement amount D1 relating to the roll behavior of the sheet is extremely small.

  On the other hand, the sheet system 1000 shown in FIG. 5 includes a rail portion 17L instead of the rail portion 130L, and includes two rollers 18 having substantially equal rigidity instead of the first roller 110L and the second roller 120L. This is different from the seat system 10 in that respect. The rail portion 17L is installed such that its bottom portion is horizontal, and therefore the second direction is a direction that is 90 ° open with respect to a reference line (not shown in FIG. 5). That is, in the sheet system 1000 according to the comparative example, the force in the direction of canceling the roll behavior due to the inertial force Fi does not act on the contact point PL, and the rigidity of each roller is equal. The amount of displacement of the sheet related to the roll behavior caused by the force Fi is the displacement amount D2 (D2 >> D1), and the sheet rolls greatly.

  As described above, according to the seat system 10 according to the present embodiment, the second direction component of the force applied to the contact point by the support mechanism 100L (the support mechanism 100R also acts similarly) causes the sheet roll behavior. Acts in the direction of cancellation. At this time, since the rigidity in the second direction in the support mechanism 100L is smaller than the rigidity in the first direction orthogonal to the second direction, the sheet assembly 11 is displaced in a direction to cancel the roll behavior. The roll of the sheet is efficiently and effectively suppressed only by the physical action.

Second Embodiment
Next, a second embodiment of the present invention will be described with reference to FIG. FIG. 6 is a schematic diagram of the seat system 20 according to the second embodiment of the present invention. In the figure, the same reference numerals are given to the same portions as those in FIG. 1, and the description thereof will be omitted as appropriate.

  In FIG. 6, the seat system 20 is different from the seat system 10 according to the first embodiment in that the seat system 20 includes support mechanisms 200L and 200R instead of the support mechanisms 100L and 100R. It is another example of. In the second embodiment, the rail portions 130L and 130R together with the seat and each fixing portion constitute a seat assembly 21 that is an example of the “sheet assembly” according to the present invention. In the second embodiment, as in the first embodiment, the support mechanism 200R will be described at the same time as the support mechanism 200L for the purpose of preventing the explanation from becoming complicated.

  The support mechanism 200L is another example of the “sheet assembly support mechanism” according to the present invention, which includes a bush 210L, a bush fixing portion 220L, and a base 230L.

  The bush 210L is another example of the “supporting means” according to the present invention, in which the rigidity in the first direction in the figure is greater than the rigidity in the second direction in the figure perpendicular to the first direction. . In this first direction, the angle formed by the straight line extending in the first direction and the reference line L1 is such that the load line L2 connecting the contact point 210a between the bush 210L and the seat assembly 21 (mainly the rail portion 130L) and the center of gravity G is It is set smaller than the angle formed with the reference line L1. Details of the bush 210L will be described later.

  The bush fixing portion 220L is a steel fixing member connected to an inner cylinder portion (described later) of the bush 210L, and is connected to the inner cylinder portion of the bush 210L by bolts and nuts (not shown).

  The base 230L is a base for fixing the bush fixing portion 220L to the chassis 16, and forms an example of the “base” according to the present invention together with the bush fixing portion 220L.

  Here, the detailed configuration of the bush 210L will be described with reference to FIG. FIG. 7 is a schematic diagram of the bush 210L. In the figure, the same reference numerals are given to the same portions as those in FIG. 6, and the description thereof is omitted as appropriate.

  In FIG. 7, the bush 210 </ b> L includes an outer cylinder portion 211, an inner cylinder portion 212, and an elastic body portion 213.

  The outer cylinder portion 211 is a hollow cylindrical member that extends in a direction perpendicular to the paper surface in FIG. 6 (the front-rear direction of the vehicle), and a part of the outer peripheral surface thereof is configured to form a contact point 210a. . The inner cylinder portion 212 is a hollow cylindrical member configured concentrically with the outer cylinder portion 211, and is configured to be fixed to the bush fixing portion 220L in the vicinity of the center thereof.

  The elastic body portion 213 is an elasticity filled in a portion corresponding to the first direction penetrating the inner cylinder portion 212 in the space defined by the outer peripheral surface of the inner cylinder portion 212 and the inner peripheral surface of the outer cylinder portion 211. It is composed of a body and is fixed to a part of each of the inner peripheral surface of the inner cylindrical portion 212 and the inner peripheral surface of the outer cylindrical portion 211. On the other hand, a portion of the space that is not filled with the elastic body portion 213 forms a cavity portion 214, and a position where the cavity portion 214 is formed corresponds to a second direction penetrating the inner cylinder portion 212 in the space. It is almost equal to the position. Since the rigidity of the hollow portion 214 is smaller than that of the elastic body portion 213, the rigidity of the bush 210 in the first direction is larger than that of the second direction.

  Under such a configuration, when the vehicle turns, for example, at the contact point 210a, a resultant force including an inertial force acts in the direction of the load line L2 as in the first embodiment. As in the first embodiment, the resultant force is divided into component forces in the first direction and the second direction orthogonal to the first direction. At this time, the rigidity of the bush 210 in the second direction is the first direction. Therefore, the sheet assembly 21 is displaced in the second direction, and the roll behavior of the sheet due to the inertial force is suppressed. That is, as in the first embodiment, the roll of the sheet is efficiently and effectively suppressed by the physical action.

<Third Embodiment>
Next, a support mechanism according to a third embodiment of the present invention will be described with reference to FIG. FIG. 8 is a schematic diagram of the support mechanism 300L and the support mechanism 300R. In the figure, the same reference numerals are given to the same portions as those in FIG. 1, and the description thereof will be omitted as appropriate. In the following description, only the support mechanism 300L will be described for the same reason as in the first and second embodiments.

  In FIG. 8, a support mechanism 300L is a mechanism that supports a rail portion 130L that is a part of the seat assembly, and includes a rigid body portion 310L, an elastic body portion 320L, and a base 330L.

  The rigid body portion 310L is a steel block member, and is an example of the “supporting means” according to the present invention that contacts the rail portion 130L at the contact point 310a of the upper surface portion.

  The base 330L is a steel block member having a lower surface portion similar to the rigid body portion 310L in contact with the chassis 16, and is configured to function as an example of the “base” according to the present invention.

  The elastic body portion 320L is a thin plate-like elastic body sandwiched between the rigid body portion 310L and the base 330L, and is configured to function as an example of the “support means” according to the present invention together with the rigid body portion 310L. Yes.

  In the present invention, the “thin plate shape” is a concept encompassing a shape whose thickness is sufficiently smaller than the size of two surfaces intersecting in the thickness direction, and the two surfaces are not necessarily parallel to each other. In other words, such a surface is not necessarily flat.

  In particular, the lower surface portion of the rigid body portion 310L and the upper surface portion of the base 330L are formed to be inclined with respect to the horizontal direction, and are parallel to each other. The inclination is such that the angle formed by the reference line L1 and the straight line extending in the first direction in the figure, which overlaps the thickness direction of the elastic body portion 320L sandwiched therebetween, connects the gravity center G and the contact point 310a. It is determined to be smaller than an angle formed by L2 and the reference line L1.

  Under such a configuration, the resultant force in the direction of the load line L2 acting on the contact point when the vehicle turns is divided into component forces in the first direction and the second direction, as in the above-described embodiments. . At this time, the rigidity of the elastic body portion 320L in the second direction in the drawing is smaller than the rigidity in the first direction in the drawing due to the elastic body portion 320L being formed in a thin plate shape. Similar to the configuration, the sheet assembly is displaced in a direction that inhibits roll behavior. That is, the support mechanism 300L according to the present embodiment can efficiently and effectively suppress the sheet roll.

In the various embodiments described above, the center of gravity G is defined as the center of gravity of the seat assembly. However, when an occupant is seated on the seat, the position of the center of gravity G virtually changes. At this time, if the change in position of the center of gravity also changes the angle theta ₁ with respect to the reference line L1 load line L2. Therefore, when setting the first direction, for example, the effect according to the present invention can be ensured even when such a change in the position of the center of gravity occurs experimentally, empirically, or based on simulations. Thus, a predetermined margin may be given.

  The present invention is not limited to the above-described embodiment, and can be appropriately changed without departing from the gist or concept of the invention that can be read from the claims and the entire specification, and support of the seat assembly accompanying such a change. Mechanisms and vehicle seat systems are also within the scope of the present invention.

1 is a schematic diagram of a seat system according to a first embodiment of the present invention. FIG. 2 is an equivalent schematic diagram of a seat assembly and a support mechanism in the seat system of FIG. 1. It is a schematic diagram showing the operation | movement at the time of vehicle turning in the support mechanism of FIG. It is a schematic diagram showing the actual operation | movement of the seat system of FIG. It is a mimetic diagram of a sheet system concerning a comparative example of a 1st embodiment of the present invention. It is a mimetic diagram of a seat system concerning a 2nd embodiment of the present invention. It is a schematic diagram of the bush in the seat system of FIG. It is a schematic diagram of the support mechanism which concerns on 3rd Embodiment of this invention.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 10 ... Sheet system, 11 ... Sheet assembly, 20 ... Sheet system, 21 ... Sheet assembly, 100L, 100R ... Support mechanism, 110L, 110R ... First roller, 120L, 120R ... Second roller, 130L, 130R ... Rail part, 140L, 140R ... base, 200L, 200R ... support mechanism, 210L, 210R ... bush, 220L, 220R ... bush fixing part, 230L, 230R ... base, 300L, 300R ... support mechanism, 310L, 310R ... rigid body part, 320L 320R ... elastic body part, 330L, 330R ... base.

Claims (7)

A seat assembly support mechanism for supporting a predetermined type of seat assembly including at least a seat in a vehicle,
Θ ₁ (0 ° <θ ₁ <90 °) is defined as an angle formed by a load line connecting the attachment point to the seat assembly and the center of gravity with respect to a reference line extending vertically downward from the center of gravity of the seat as viewed from the front. In this case, the rigidity in the first direction that forms an angle θ ₂ (0 ° <θ ₂ <θ ₁ ) in the direction of the load line with respect to the reference line is the rigidity in the second direction orthogonal to the first direction. Supporting means attached to the seat assembly to be larger than
And a base for supporting the sheet assembly via the support means. The support means includes a plurality of elastic bodies having different rigidity, and the attachment point is defined as a point to which the elastic body having the highest rigidity is attached.
The base body receives (i) a component force in the first direction among the forces acting on the attachment point via the elastic body having the highest rigidity, and (ii) among the forces acting on the attachment point. 2. The seat assembly is supported by receiving a component force in the second direction via another elastic body excluding the elastic body having the highest rigidity among the elastic bodies. Support mechanism for the seat assembly. The base includes a rail portion extending in the front-rear direction of the vehicle,
The support mechanism for a sheet assembly according to claim 2, wherein the support means includes a roller portion that is disposed in the rail portion and supports the sheet assembly so as to be movable in the front-rear direction. The support means includes an outer cylinder part and an inner cylinder part which are concentric cylinders extending in the front-rear direction of the vehicle, and a part of the outer wall portion of the outer cylinder part forms the attachment point and the inner cylinder Part is fixed to the base body,
At least a part of the space between the outer cylinder part and the inner cylinder part has at least a part of the rigidity in the first direction passing through at least a part of the inner cylinder part in the space. The support mechanism for a seat assembly according to claim 1, wherein the elastic body is filled so as to be larger than the rigidity in the second direction penetrating through the sheet. The seat assembly support mechanism according to claim 4, wherein a portion of the space corresponding to the second direction penetrating at least a part of the inner cylinder portion is a cavity. The support means includes (i) a rigid body portion having the attachment point, and (ii) a thin plate-like elastic body portion sandwiched between the rigid body portion and the base body and having a lower rigidity than the rigid body portion,
The shape of the rigid body part and the base is determined so that the thickness direction of the elastic body part is the first direction in a state where the elastic body part is sandwiched. A support mechanism for the described seat assembly. A support mechanism for the seat assembly according to any one of claims 1 to 6;
A vehicle seat system comprising: the seat assembly.

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