Vehicular seat device

Abstract

To obtain a vehicular seat device which has a small possibility that an armrest at a storage position is unexpectedly rotated to a use position side.SOLUTION: A vehicular seat device includes: a rotation center shaft 41 which is fixed to an armrest which is movable with respect to a seat back between a storage position stored in a recess of the seat back and a use position; a shaft 42 to be guided which is fixed to the armrest; a first hole 55 which is provided in the seat back and has a rotation center section 56 into which the rotation center shaft is rotatably inserted; and a second hole 62 which is provided in the seat back and has a guide section 63 which has a portion which moves and guides the shaft to be guided in a state that the rotation center shaft is inserted into the rotation center section and is formed into a circular arc shape with the rotation center section as a center of curvature. The first hole has a first storage time receiving section 57 which is continuous to the rotation center section at a position deviated from the center of curvature in a specific direction. The second hole has a second storage time receiving section 65 which is continuous to the guide section at a position deviated from the guide section in the specific direction.SELECTED DRAWING: Figure 3

Description

Technical Field

[0001] The present invention relates to a vehicle seat device.

Background Art

[0002] The following Patent Document 1 discloses a vehicle seat device. A recess is formed on the front surface of the seat back of this vehicle seat device, and an armrest is provided in this recess. The armrest is rotatable between a storage position where it is stored in the recess and a use position in front of the storage position with respect to the seat back.

Prior Art Document

Patent Document

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] When a sudden brake occurs in a vehicle equipped with the vehicle seat device of Patent Document 1 above, due to the inertial force generated in the vehicle, the armrest in the storage position may unexpectedly rotate toward the use position side.

[0005] In consideration of the above facts, an object of the present invention is to obtain a vehicle seat device in which the risk of the armrest in the storage position unexpectedly rotating toward the use position side is small.

Means for Solving the Problems

[0006] The vehicle seat device according to the invention of claim 1 includes a seat back having a recess; an armrest movable relative to the seat back between a storage position where the armrest is stored in the recess and a use position where the armrest is rotated from the storage position and at least a portion of the armrest is positioned outside the recess; a rotation center shaft fixed to the armrest; a guided shaft fixed to the armrest and parallel to the rotation center shaft; a first hole provided in the seat back and having a rotation center into which the rotation center shaft is rotatably inserted; and a guided shaft provided in the seat back and configured to move the guided shaft while the rotation center shaft is inserted in the rotation center shaft. and a second hole having a guide portion having an arc-shaped portion with the rotation center as the center of curvature by moving and guiding the armrest around the rotation center axis relative to the seat back, wherein the first hole is connected to the rotation center at a position shifted in a specific direction from the center of curvature and has a first storage receiving portion that receives the rotation center axis when the armrest is in the storage position, and the second hole is connected to the guide portion at a position shifted in the specific direction from the guide portion and has a second storage receiving portion that receives the guided shaft when the armrest is in the storage position.

[0007] The seat back of the vehicle seat apparatus described in claim 1 is provided with a first hole and a second hole, and the armrest is provided with a rotation axis inserted into the first hole and a guided axis inserted into the second hole. When the armrest is in the storage position, the rotation axis is inserted into the first storage receiving portion of the first hole, and the guided axis is inserted into the second storage receiving portion of the second hole. Therefore, even if a rotation force is applied to the armrest in this state, the armrest does not rotate toward the use position. When an external force is applied to the armrest, causing it to move in the opposite direction to the specific direction, the rotation axis moves to the rotation center of the first hole and the guided axis moves to the guide portion of the second hole. Therefore, when a rotation force is applied to the armrest in this state, the armrest rotates toward the use position. In this way, the armrest cannot rotate unless the rotation axis moves to the rotation center and the guided axis moves to the guide portion. Therefore, the vehicle seat apparatus described in claim 1 is less likely to cause the armrest in the storage position to unexpectedly rotate toward the use position.

[0008] The vehicle seat device according to the invention described in claim 2 is the vehicle seat device according to claim 1, wherein the specific direction is downward.

[0009] In the vehicle seat device according to claim 2, in order to move the rotation center axis from the first storage receiving portion of the first hole to the rotation center portion and move the guided shaft from the second storage receiving portion of the second hole to the guide portion, it is necessary to move the armrest in the storage position upward. Therefore, in the vehicle seat device according to claim 2, the possibility that the armrest in the storage position unexpectedly rotates toward the use position side is small.

[0010] The vehicle seat device according to the invention described in claim 3 is the vehicle seat device according to claim 1 or claim 2, wherein a first resistance member that applies a resistance greater than the resistance applied to the rotation center axis by the inner surface of the first hole is provided on the rotation center axis that moves from the rotation center portion to the first storage receiving portion side in the first hole.

[0011] A first resistance member that applies a resistance to the rotation center axis that moves from the rotation center portion to the first storage receiving portion side is provided in the first hole of the vehicle seat device according to claim 3. Therefore, for example, when the armrest is in the use position, the possibility that the rotation center axis in the rotation center portion unexpectedly moves to the first storage receiving portion is small.

[0012] The vehicle seat device according to the invention described in claim 4 is the vehicle seat device according to claim 1 or claim 2, wherein a second resistance member that applies a resistance greater than the resistance applied to the guided shaft by the inner surface of the second hole is provided on the guided shaft that moves from the guide portion to the second storage receiving portion side in the second hole.

[0013] In the second hole of the vehicle seat device according to claim 4, a second resistance member is provided that applies resistance to the guided shaft moving from the guide portion toward the second storage receiving portion side. Therefore, for example, when the armrest is near the storage position, the possibility that the guided shaft in the guide portion suddenly moves to the second storage receiving portion is small.

Effect of the Invention

[0014] As described above, in the vehicle seat device according to the present invention, the possibility that the armrest in the storage position suddenly rotates to the use position side is small.

Brief Description of the Drawings

[0015]

Figure 1

Figure 2

Figure 3

Figure 4

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Figure 7

Figure 8

Figure 9

Figure 10

Figure 11

Figure 12

Figure 13

Embodiments for Carrying Out the Invention

[0016] Hereinafter, a vehicle seat device according to an embodiment of the present invention will be described with reference to FIGS. 1 to 10. In each figure, the arrow FR appropriately shown indicates the forward direction in the vehicle front-rear direction (seat front-rear direction), the arrow UP indicates the upward direction in the vehicle up-down direction (seat up-down direction), and the arrow LH indicates the left side in the vehicle left-right direction (seat left-right direction). Hereinafter, when simply explaining using the front-rear, left-right, and up-down directions, the front and rear in the seat front-rear direction, the left and right in the seat left-right direction (vehicle width direction), and the up and down in the seat up-down direction are indicated.

[0017] As shown in FIG. 1, a vehicle seat device, which is a rear seat 15, is provided on the floor surface 12 of the passenger compartment 11 of the vehicle 10. The rear seat 15 has a seat cushion 16 fixed to the floor surface 12 via a support member 12A, and a seat back 17 having a lower end connected to the rear end portion of the seat cushion 16. As shown in FIG. 1, a recess 18 having a substantially rectangular parallelepiped shape is formed in the central portion in the left-right direction on the front surface of the seat back 17.

[0018] The seat back 17 includes a metal frame member 20 which is its skeletal member, a cushion material (not shown) provided around the frame member 20, and a cover material 25 that covers the periphery of the cushion material and forms the outer shape of the seat back 17. Further, the frame member 20 includes a linear central right frame 21 located on the right side of the recess 18 and extending along a direction substantially parallel to the vertical direction, and a linear central left frame 22 located on the left side of the recess 18 and extending along a direction substantially parallel to the vertical direction.

[0019] As shown in FIG. 1, a substantially rectangular parallelepiped-shaped armrest 30 is provided in the recess 18. The armrest 30 includes a metal frame member 31 which is its skeletal member, a cushion material (not shown) provided around the frame member 31, and a cover material 35 that covers the periphery of the cushion material and forms the outer shape of the armrest 30. Further, the frame member 31 includes a linear right-side frame 32 that constitutes its right side portion and a linear left-side frame 33 that constitutes its left side portion.

[0020] As shown in FIG. 2, a metal armrest-side bracket 40 is fixed to the right-side frame 32 of the frame member 31. The cross-sectional shape of the armrest-side bracket 40 is an arc shape along the outer peripheral surface of the right-side frame 32. The left end portion of a metal rotation center shaft 41 and the left end portion of a metal guided shaft 42 are fixed to the right side surface of the armrest-side bracket 40. The rotation center shaft 41 and the guided shaft 42 are parallel to the left-right direction and are cylindrical. An opening (not shown) is provided on the right side surface of the cover material 35 of the armrest 30, and the rotation center shaft 41 and the guided shaft 42 protrude to the right of the right side surface of the cover material 35 through this opening.

[0021] As shown in FIG. 2, a metal seat-back side bracket 50 is fixed to the central right frame 21. The seat-back side bracket 50 has a fixed portion 51 and a main body portion 52. The cross-sectional shape of the fixed portion 51 is an arc shape along the outer peripheral surface of the central right frame 21, and the fixed portion 51 is fixed to the outer peripheral surface of the central right frame 21. The main body portion 52 protrudes forward from the fixed portion 51 and has a flat plate shape perpendicular to the left-right direction. A first hole 55 and a second hole 62 are formed as through holes in the main body portion 52.

[0022] As shown in FIGS. 2 and 3, the first hole 55 is an elongated hole substantially parallel to the vertical direction. The upper part of the first hole 55 is constituted by a rotation center portion 56, and the lower part of the first hole 55 is continuous with the rotation center portion 56 and is constituted by a first storage receiving portion 57 located below (in a specific direction) the rotation center portion 56. Further, as shown in FIG. 3, first resistance members 58 are fixed to the upper and lower central portions in the vertical direction of the front and rear inner surfaces of the first hole 55, respectively. The first resistance member 58 is made of rubber and has a substantially triangular side surface shape. That is, the first hole 55 is partitioned into a rotation center portion 56 and a first storage receiving portion 57 by the front and rear first resistance members 58.

[0023] As shown in FIGS. 2 and 3, the second hole 62 has a guide portion 63 having an arc shape except for the upper end portion, and an extension portion 64 continuous with the lower end portion of the guide portion 63 and located below (in a specific direction) the lower end portion of the guide portion 63. The center of curvature of the arc shape constituting the portion of the guide portion 63 except for the upper end portion in side view coincides with the rotation center portion 56. As shown in FIG. 3, the extension portion 64 extends downward from the lower end portion of the guide portion 63. Second resistance members 66 are fixed to the upper and lower central portions in the vertical direction of the front and rear inner surfaces of the extension portion 64, respectively. The second resistance member 66 is made of rubber and has a substantially triangular side surface shape. The portions located below the front and rear second resistance members 66 of the extension portion 64 are second storage receiving portions 65.

[0024] An opening (not shown) is provided on the inner surface on the right side of the recess 18 of the seat back 17, and the main body portion 52 (the first hole 55, the second hole 62) of the seat-back side bracket 50 is exposed to the left through this opening.

[0025] As shown in FIG. 1, the lower part of the armrest 30 is inserted into the lower part of the recess 18. At this time, as shown in FIG. 3, the right end of the rotation center shaft 41 is inserted into the first hole 55 of the main body part 52 from the left side, and the right end of the guided shaft 42 is inserted into the second hole 62 from the left side.

[0026] The rotation center shaft 41 can move vertically inside the first hole 55. That is, the rotation center shaft 41 can be inserted into the first storage receiving part 57 as shown in FIG. 3, and the rotation center shaft 41 can also be inserted into the rotation center part 56 as shown in FIG. 6. When the rotation center shaft 41 moves between the first storage receiving part 57 and the rotation center part 56, the rotation center shaft 41 moves while elastically deforming the front and rear first resistance members 58. Therefore, when the rotation center shaft 41 moves between the first storage receiving part 57 and the rotation center part 56, the front and rear first resistance members 58 apply a predetermined resistance force to the rotation center shaft 41. This resistance force is greater than the resistance force applied to the rotation center shaft 41 by the inner surface of the first hole 55 when the rotation center shaft 41 moves between the first storage receiving part 57 and the rotation center part 56.

[0027] The guided shaft 42 can move inside the second hole 62. That is, the guided shaft 42 can move between the extension part 64 and the guide part 63. Further, the guided shaft 42 can be inserted into the second storage receiving part 65 of the extension part 64 as shown in FIG. 3, and the guided shaft 42 can also be inserted into the upper space of the extension part 64 as shown in FIG. 6. When the guided shaft 42 moves between the second storage receiving part 65 and the upper space of the extension part 64, the guided shaft 42 moves while elastically deforming the front and rear second resistance members 66. Therefore, when the guided shaft 42 moves between the second storage receiving part 65 and the upper space of the extension part 64, the front and rear second resistance members 66 apply a predetermined resistance force to the guided shaft 42. This resistance force is greater than the resistance force applied to the guided shaft 42 by the inner surface of the second hole 62 when the guided shaft 42 moves between the second storage receiving part 65 and the upper space of the extension part 64.

[0028] As shown in FIG. 3, when the rotation center axis 41 is inserted into the first storage receiving portion 57 and the guided shaft 42 is inserted into the second storage receiving portion 65, the armrest 30 is located at the storage position shown by the solid line in FIG. 1 and FIG. 4. At this time, the entire armrest 30 is housed in the recess 18. That is, the front surface of the armrest 30 and the front surface of the seat back 17 are substantially continuous. The longitudinal dimension (vertical dimension in FIG. 4) of the armrest 30 is shorter than the longitudinal dimension (vertical dimension) of the recess 18. Therefore, as shown in FIGS. 1 and 5, when the armrest 30 is in the storage position, an unused space 19 is formed where the armrest 30 does not locate at the upper end portion of the recess 18.

[0029] When an upward force (a force in the direction opposite to the specific direction) is applied to the armrest 30 in the storage position by an occupant of the vehicle 10, as shown in FIG. 6, the rotation center axis 41 moves to the rotation center portion 56 while elastically deforming the first resistance member 58, and the guided shaft 42 passes through the upper space of the extension portion 64 while elastically deforming the second resistance member 66 and moves to the lower end portion of the guide portion 63. Therefore, the armrest 30 moves to the rotatable position shown in FIG. 7. When the armrest 30 is located at the rotatable position, the entire armrest 30 is housed in the recess 18 and a gap G (see FIG. 7) is formed between the lower surface of the armrest 30 and the bottom surface of the recess 18. Further, the vertical dimension of the unused space 19 becomes smaller than when the armrest 30 is in the storage position.

[0030] As described above, the center of curvature of the arc shape constituting the portion excluding the upper end portion of the guide portion 63 in the side view coincides with the rotation center portion 56. Therefore, when the armrest 30 moves to the rotatable position, the guided shaft 42 can rotate along the guide portion 63 around the rotation center axis 41 (rotation center portion 56). Therefore, when the occupant applies a forward (downward) force to the armrest 30 after the armrest 30 moves to the rotatable position, the armrest 30 rotates forward around the rotation center axis 41 (rotation center portion 56), and the guided shaft 42 moves the guide portion 63 upward.

[0031] When the guided shaft 42 reaches the upper end of the guide portion 63 as shown in FIG. 8, the armrest 30 moves to the use position as shown by the phantom line in FIG. 1 and FIG. 9.

[0032] To return the armrest 30 in the use position to the storage position, first, the occupant applies an upward (backward) force to the armrest 30. As a result, the armrest 30 rotates backward about the rotation center axis 41 (rotation center portion 56), and the guided shaft 42 moves downward along the guide portion 63. When the entire armrest 30 is stored in the recess 18, the guided shaft 42 moves to the lower end of the guide portion 63 as shown in FIG. 6, and the armrest 30 moves to the rotatable position shown in FIG. 7. When the occupant applies a downward force to the armrest 30 in this state, the rotation center axis 41 moves to the first storage receiving portion 57 while elastically deforming the first resistance member 58, and the guided shaft 42 passes through the upper space of the extension portion 64 while elastically deforming the second resistance member 66 and moves to the second storage receiving portion 65. Thereby, the armrest 30 moves to the storage position shown by the solid line in FIG. 1 and FIG. 4.

[0033] As described above, the seatback side bracket 50 fixed to the seatback 17 of the rear seat 15 of the present embodiment is provided with a first hole 55 and a second hole 62, and the armrest side bracket 40 fixed to the armrest 30 is provided with a rotation center axis 41 inserted into the first hole 55 and a first hole 55 inserted into the second hole 62. When the armrest 30 is in the storage position, the rotation center axis 41 is inserted into the first storage receiving portion 57 of the first hole 55, and the guided shaft 42 is inserted into the second storage receiving portion 65 of the second hole 62. Therefore, even if a rotational force is applied to the armrest 30 in this state, the armrest 30 does not rotate toward the use position side. That is, for example, even if an inertial force is generated in the vehicle 10 due to sudden braking in the vehicle 10 during forward travel, the possibility that the armrest 30 in the storage position rotates unexpectedly to the use position due to this inertial force is small.

[0034] When an external force in the upward direction (opposite to the specific direction) is applied to the armrest 30, the rotation center axis 41 moves toward the rotation center portion 56 of the first hole 55 and the guided shaft 42 moves toward the guiding portion 63 of the second hole 62. That is, the armrest 30 moves to the rotatable position. Therefore, when a rotational force is applied to the armrest 30 in this state, the armrest 30 rotates toward the use position side. That is, by intentionally moving the armrest 30 in the storage position to the rotatable position in this way, the armrest 30 can then be rotated to the use position.

[0035] Furthermore, the first storage receiving portion 57 of the first hole 55 is located below the rotation center portion 56, and a pair of front and rear first resistance members 58 are provided in the first hole 55. Therefore, due to vibrations of the vehicle 10 or the like, the possibility that the rotation center axis 41 in the first storage receiving portion 57 unexpectedly moves toward the rotation center portion 56 against gravity is small. Furthermore, the second storage receiving portion 65 of the second hole 62 is located below the guiding portion 63, and a pair of front and rear second resistance members 66 are provided on the extension portion 64. Therefore, due to vibrations of the vehicle 10 or the like, the possibility that the guided shaft 42 in the second storage receiving portion 65 unexpectedly moves toward the guiding portion 63 against gravity is small.

[0036] Furthermore, since the first resistance member 58 is provided in the first hole 55 and the second resistance member 66 is provided in the second hole 62, the possibility that the armrest 30 in the rotatable position unexpectedly moves to the storage position is small. That is, for example, when the armrest 30 in the rotatable position uses its own weight to move the rotation center axis 41 to the first storage receiving portion 57 while elastically deforming the first resistance member 58, and the guided shaft 42 to the second storage receiving portion 65 while elastically deforming the second resistance member 66, the possibility is small.

[0037] Furthermore, when the armrest 30 is in the storage position or the rotatable position, a non-use space 19 is formed at the upper end portion of the recess 18. Therefore, for example, as shown in FIG. 5, it is possible to detachably attach a member 70 having a front shape substantially the same as that of the non-use space 19 to the non-use space 19. An example of this member 70 is a speaker or a tissue box.

[0038] Further, for example, as shown in FIG. 10, a substantially rectangular parallelepiped-shaped hollow frame body 75 with an open front surface is fixed to the rear surface of a portion corresponding to the unused space 19 of the recess 18, and the lower end portion of a hook 77 is rotatably attached to a rotation shaft 76 extending in the left-right direction provided between the left and right side walls of the frame body 75. This hook 77 is rotatable between a storage position (position of the virtual line) where the whole is stored in the internal space of the frame body 75 and a usable position (position of the solid line) where a part of it projects from the front surface of the frame body 75 into the unused space 19. When the hook 77 is in the usable position, for example, it is possible to hang the clothes of an occupant or the like on the hook 77.

[0039] Further, a USB jack may be provided on the rear surface of a portion corresponding to the unused space 19 of the recess 18. In this way, when the armrest 30 is in the storage position or the rotatable position, a USB cable can be connected to this USB jack.

[0040] As described above, the embodiments of the present invention have been described, but the present invention is not limited to the above embodiments.

[0041] For example, the present invention may be implemented in the mode of the first modification shown in FIG. 11. In the main body 52 of this first modification, a first hole 80 and a second hole 82 located in front of the first hole 80 are provided. The first hole 80 is vertically symmetric with the first hole 55. That is, a rotation center portion 56 is provided at the lower part of the first hole 80, and a first receiving portion 57 at the time of first storage is provided at the upper part of the first hole 80. That is, the first receiving portion 57 at the time of first storage is located above (in a specific direction) the rotation center portion 56. Further, a pair of front and rear first resistance members 58 are provided on the inner surface of the first hole 80. The second hole 82 is rotationally symmetric with the second hole 62 with respect to the curvature center (rotation center portion 56) of the guide portion 63. That is, an extension portion 64 is provided at the upper end portion of the second hole 82, and the upper end portion of the guide portion 63 is connected to the lower end portion of the extension portion 64. That is, the extension portion 64 is located above (in a specific direction) the guide portion 63. Also in the first modification, when the rotation center axis 41 is located in the first receiving portion 57 at the time of first storage and the guided shaft 42 is located in the second receiving portion 65 at the time of second storage, the armrest 30 is located at the storage position. Further, when the rotation center axis 41 is located in the rotation center portion 56 and the guided shaft 42 is located at the upper end portion of the guide portion 63, the armrest 30 is located at the rotatable position. That is, when a passenger applies a downward (opposite to the specific direction) force to the armrest 30 in the storage position, the armrest 30 moves from the storage position to the rotatable position. After the armrest 30 has moved to the rotatable position, when the passenger applies a forward (downward) force to the armrest 30, the armrest 30 rotates forward about the rotation center axis 41 (rotation center portion 56), the guided shaft 42 moves downward inside the guide portion 63, and the armrest 30 rotates toward the use position side. In the first modification, when the armrest 30 is in the storage position, the upper end of the armrest 30 and the ceiling surface of the recess 18 may be close to each other, and a non-use space 19 may be formed between the lower surface of the armrest 30 and the lower surface of the recess 18.

[0042] The present invention may also be implemented in the form of the second modification shown in FIG. 12. In the main body 52 of this second modification, a first hole 84 and a second hole 85 located behind the first hole 84 are provided. The first hole 84 has a shape obtained by rotating the first hole 55 by 90°. That is, a rotation center portion 56 is provided at the rear portion of the first hole 84, and a first receiving portion 57 at the time of first storage is provided at the front portion of the first hole 84. That is, the first receiving portion 57 at the time of first storage is located in front of (in a specific direction) the rotation center portion 56. Further, a pair of upper and lower first resistance members 58 are provided on the inner surface of the first hole 84. The second hole 85 includes a guide portion 63 having the same shape as the guide portion 63 of the second hole 62, and an extension portion 64 connected to the lower end portion of the guide portion 63 and located in front of (in a specific direction) the lower end portion of the guide portion 63. A second receiving portion 65 at the time of second storage is provided at the front portion of the extension portion 64, and a pair of upper and lower second resistance members 66 are provided on the inner surface of the extension portion 64. Also in the second modification, when the rotation center axis 41 is located at the first receiving portion 57 at the time of first storage and the guided shaft 42 is located at the second receiving portion 65 at the time of second storage, the armrest 30 is in the storage position. Further, when the rotation center axis 41 is located at the rotation center portion 56 and the guided shaft 42 is located at the lower end portion of the guide portion 63, the armrest 30 is in the rotatable position. That is, when a passenger applies a rearward (opposite to the specific direction) force to the armrest 30 in the storage position, the armrest 30 moves from the storage position to the rotatable position. After the armrest 30 has moved to the rotatable position, when the passenger applies a forward (downward) force to the armrest 30, the armrest 30 rotates forward about the rotation center axis 41 (rotation center portion 56), the guided shaft 42 moves upward inside the guide portion 63, and the armrest 30 rotates toward the use position side.

[0043] The present invention may also be implemented in the form of the third modification shown in FIG. 13. In the main body 52 of this third modification, a first hole 87 and a second hole 88 located behind the first hole 87 are provided. The first hole 87 is symmetrical with the first hole 84 in the front-rear direction. That is, a rotation center portion 56 is provided at the front portion of the first hole 87, and a first receiving portion 57 at the time of first storage is provided at the rear portion of the first hole 87. That is, the first receiving portion 57 at the time of first storage is located behind (in a specific direction) the rotation center portion 56. Further, a pair of upper and lower first resistance members 58 are provided on the inner surface of the first hole 87. The second hole 88 includes a guide portion 63 having the same shape as the guide portion 63 of the second hole 62, and an extension portion 64 connected to the lower end portion of the guide portion 63 and located behind (in a specific direction) the lower end portion of the guide portion 63. A second receiving portion 65 at the time of second storage is provided at the rear portion of the extension portion 64, and a pair of upper and lower second resistance members 66 are provided on the inner surface of the extension portion 64. Also in the third modification, when the rotation center axis 41 is located in the first receiving portion 57 at the time of first storage and the guided shaft 42 is located in the second receiving portion 65 at the time of second storage, the armrest 30 is in the storage position. Further, when the rotation center axis 41 is located in the rotation center portion 56 and the guided shaft 42 is located at the lower end portion of the guide portion 63, the armrest 30 is in the rotatable position. That is, when a passenger applies a forward (opposite to the specific direction) force to the armrest 30 in the storage position, the armrest 30 moves from the storage position to the rotatable position. After the armrest 30 has moved to the rotatable position, when the passenger applies a forward (downward) force to the armrest 30, the armrest 30 rotates forward about the rotation center axis 41 (rotation center portion 56), the guided shaft 42 moves upward inside the guide portion 63, and the armrest 30 rotates toward the use position side.

[0044] In the second and third modifications, when the armrest 30 is in the storage position, a non-use space 19 may be formed between the upper end of the armrest 30 and the ceiling surface of the recess 18, or a non-use space 19 may be formed between the lower surface of the armrest 30 and the lower surface of the recess 18.

[0045] Also, the above specific direction may be a direction different from the front, rear, lower, and upper directions. For example, the specific direction may be a front diagonally downward direction that is a direction between the front and the lower.

[0046] In addition, a seat-back side bracket symmetrical to the seat-back side bracket 50 may be provided on the center left frame 22, and an armrest side bracket (rotation center axis 41 and guided shaft 42) symmetrical to the armrest side bracket 40 may be provided on the left side frame 33. The rotation center axis may be inserted into the first hole of the seat-back side bracket, and the guided shaft may be inserted into the second hole of the seat-back side bracket. In this case, the seat-back side bracket 50 may or may not be provided on the center right frame 21. Also, the armrest side bracket 40 (rotation center axis 41 and guided shaft 42) may or may not be provided on the right side frame 32.

[0047] In addition, a biasing member may be provided in the first hole to bias the rotation center axis 41 located at the rotation center portion 56 toward the rotation center portion 56 when the rotation center axis 41 attempts to move toward the first storage receiving portion 57 side. Also, a biasing member may be provided in the second hole to bias the guided shaft 42 located at the guiding portion 63 toward the guiding portion 63 when the guided shaft 42 attempts to move toward the second storage receiving portion 65 side. According to this modification, it becomes easier to prevent the armrest 30 in the rotatable position from unexpectedly moving to the storage position.

Description of Reference Numerals

[0048] 15 Rear seat (vehicle seat device) 17 Seat-back 18 Recess 30 Armrest 41 Rotation center axis 42 Guided shaft 55 First hole 56 Rotation center portion 57 First storage receiving portion 58 First resistance member 62 Second hole 63 Guiding portion 64 Extension portion 65 Second storage receiving portion 66 Second resistance member 80 First hole 82 The second hole 84 The first hole 85 The second hole 87 The first hole 88 The second hole

Claims

1. A seat back having a recess, An armrest movable relative to the seat back between a storage position housed in the recess and a use position rotated from the storage position and at least partially located outside the recess, A rotation center axis fixed to the armrest, A guided shaft fixed to the armrest and parallel to the rotation center axis, A first hole provided in the seat back and having a rotation center portion into which the rotation center axis is rotatably inserted, A second hole provided in the seat back and having a guide portion having a portion forming an arc shape with the rotation center portion as the center of curvature, the armrest being rotated about the rotation center axis relative to the seat back by moving and guiding the guided shaft with the rotation center axis inserted into the rotation center portion, Comprising: The first hole is continuous with the rotation center portion at a position shifted in a specific direction from the center of curvature, and has a first storage receiving portion for receiving the rotation center axis when the armrest is in the storage position, The second hole is continuous with the guide portion at a position shifted in the specific direction from the guide portion, and has a second storage receiving portion for receiving the guided shaft when the armrest is in the storage position. A vehicle seat device.

2. The vehicle seat device according to claim 1, wherein the specific direction is downward.

3. The vehicle seat device according to claim 1 or claim 2, wherein a first resistance member is provided in the first hole to apply a resistance greater than the resistance applied to the rotation center axis by the inner surface of the first hole to the rotation center axis moving from the rotation center portion toward the first storage receiving portion side.

4. The vehicle seat device according to claim 1 or claim 2, wherein a second resistance member is provided in the second hole to apply a resistance greater than the resistance applied to the guided shaft by the inner surface of the second hole to the guided shaft moving from the guide portion toward the second storage receiving portion side.

Images