Seat frame

Abstract

To provide a seat frame improved in strength on the belt guide side of a back frame with weight and cost being suppressed from increasing.SOLUTION: There is provided a seat frame constituting a skeleton of a vehicle seat. The seat frame includes: a seat plate frame; a back plate frame; a reclining mechanism; a belt guide connected to a right shoulder portion or a left shoulder portion of the back plate frame and supporting a seat belt connected to the seat; a slider provided on a first back plate side frame extending in a direction intersecting the seat plate frame on a side where the belt guide is provided in the back plate frame slidably in an extending direction of the first back plate side frame; and a rod with one end portion connected to the slider and the other end portion connected to a first seat plate side frame extending in a longitudinal direction on a side where the belt guide is provided in the seat plate frame. Sliding the slider causes the rod to resist a forward force acting on the back plate frame while allowing swing of the back plate frame conducted by the reclining mechanism.SELECTED DRAWING: Figure 7

Description

[Technical Field]

[0001] The present invention relates to a seat frame. [Background technology]

[0002] The following Patent Document 1 discloses a vehicle seat and its frame, and when such a seat is compatible with a three-point seat belt, the belt guide that supports the seat belt may be connected to the left or right shoulder portion of the back frame. For example, in many seats installed in buses, the belt guide is connected to the left or right shoulder portion of the back frame. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 2023-066197 Summary of the Invention [Problem to be solved by the invention]

[0004] In a seat where the belt guide is connected to the shoulder portion of the back frame, for example, when the seat belt prevents the seat occupant from being thrown forward, the seat belt is pulled by the seat occupant, which may exert excessive forward force on the shoulder portion of the back frame on the belt guide side via the belt guide, potentially adversely affecting the back frame. For example, in such a case, the back frame may be twisted so that the belt guide side of the back frame protrudes forward. On the other hand, if the frame is made thicker or made of a stronger material to reinforce the frame, this may result in increased seat weight and cost. Furthermore, the back frame oscillates due to the reclining mechanism, so reinforcement is necessary to take such movement into account.

[0005] The present invention has been made in consideration of the above-mentioned circumstances, and aims to provide a seat frame that improves the strength of the belt guide side of the back frame while suppressing increases in weight and cost. [Means for solving the problem]

[0006] The present invention has been made to solve at least some of the above-mentioned problems, and can be realized as the following aspects or application examples.

[0007] The seat frame according to this application example is a seat frame that constitutes a vehicle seat, and includes a seat frame that forms the skeleton of the seat panel of the seat, a back panel frame that forms the skeleton of the back panel of the seat, a reclining mechanism that swings the back panel frame within a predetermined range relative to the seat panel frame, a belt guide that connects to the right or left shoulder of the back panel frame and supports a seat belt that is connected to the seat, a slider that is slidably attached to a first back panel side frame that extends in a direction that intersects the seat panel frame on the side of the back panel frame where the belt guide is provided, in the extension direction of the first back panel side frame, and a rod that has one end connected to the slider and the other end connected to the first seat panel side frame that extends in the front-to-rear direction on the side of the seat panel frame where the belt guide is provided, and the slider slides, allowing the back panel frame to swing due to the reclining mechanism, while the rod resists forward forces acting on the back panel frame.

[0008] According to this application example, both the slider and the rod are capable of resisting a forward force acting on the first back panel side frame on the side where the belt guide is provided in the shoulder area while allowing the back panel frame to swing due to the reclining mechanism. This makes it possible to suppress deformation of the back panel frame even when a forward load is applied to the belt guide when the seat belt prevents the seat occupant from jumping out. Therefore, the seat frame of this embodiment can improve the strength of the belt guide side of the back panel frame while suppressing increases in weight and cost. [Brief explanation of the drawings]

[0009] [Figure 1] FIG. 1 is a schematic perspective view showing the configuration of a seat according to an embodiment of the present invention. [Figure 2] 1 is a schematic perspective view showing a part of the configuration of the seat frame of the present embodiment (the periphery of a slider). FIG. [Figure 3] FIG. 2 is a schematic perspective view showing a part of the configuration of the seat frame of the present embodiment (the periphery of the cover portion). [Figure 4] FIG. 2 is a schematic perspective view showing a part of the configuration of the seat frame of the present embodiment (the periphery of the cover portion). [Figure 5] FIG. 2 is a schematic perspective view showing a part of the configuration of the seat frame of the present embodiment (around the arm). [Figure 6] FIG. 2 is a schematic perspective view showing a part of the configuration of the seat frame of the present embodiment (around the arm). [Figure 7] FIG. 2 is a schematic perspective view showing the configuration of a seat frame according to the present embodiment. [Figure 8] 8 is a schematic cross-sectional view showing the AA cross section of the back panel frame of FIG. 7. [Figure 9] FIG. 2 is a schematic perspective view showing the configuration of a seat frame according to the present embodiment. [Figure 10] 10 is a schematic cross-sectional view showing the AA cross section of the back panel frame of FIG. 9. FIG. DETAILED DESCRIPTION OF THE INVENTION

[0010] 1. Sheet configuration First, the configuration of a sheet 10 of this embodiment will be described with reference to Fig. 1. Fig. 1 is a schematic perspective view showing an example of the configuration of a sheet 10 of this embodiment.

[0011] In this specification, the front-to-rear direction (Y direction) means the front-to-rear direction as seen by a person sitting in the seat 10. The left-to-right direction (X direction) means the left-to-right direction as seen by a person sitting in the seat 10.

[0012] Furthermore, the seat 10 of this embodiment is a vehicle seat, and therefore the front-rear direction corresponds to the front-rear direction of a vehicle (not shown) in which the seat 10 is mounted, and the left-right direction corresponds to the left-right direction of the vehicle.

[0013] Furthermore, in this specification, a pair of symmetrical components may be distinguished by adding an R to the reference numeral of the right component and an L to the reference numeral of the left component.

[0014] Specifically, the seat 10 is a seat in a vehicle such as a bus. The seat 10 is generally L-shaped and accommodates a three-point seat belt 12. Hereinafter, a three-point seat belt may be simply referred to as a "seat belt." In addition, in FIG. 1, the seat belt 12 is represented by a dashed line.

[0015] The seat 10 includes a pair of left and right legs 14 (14R, 14L), a seat panel 16, a back panel 18, a belt guide 20, and a buckle 22. The legs 14 extend in the front-to-rear direction. The leg 14R is provided on the lower right side of the seat panel 16 and supports the right side of the seat panel 16. The leg 14L is provided on the lower left side of the seat panel 16 and supports the left side of the seat panel 16.

[0016] The seat panel 16 is shaped like a plate and supports the buttocks of the seated person from below. The back panel 18 is shaped like a plate that extends to intersect with the seat panel 16 and supports the back of the seated person from behind. The back panel 18 also includes side support portions 19 (19R, 19L) that support the back of the seated person from the outside in the left and right directions.

[0017] The back panel 18 is connected to the seat panel 16 via a reclining mechanism 60 (see FIG. 2), and the back panel 18 can swing within a predetermined range around a rotation axis extending in the left-right direction. In other words, the back panel 18 can be tilted by the reclining mechanism 60.

[0018] Furthermore, the reclining mechanism 60 makes it possible to appropriately adjust the angle of the back panel 18 relative to the seat panel 16 and to maintain the angle of the back panel 18 relative to the seat panel 16.

[0019] The belt guide 20 supports the seat belt 12 connected to the seat 10 at the shoulder position of the back panel 18. The belt guide 20 is provided on the right or left shoulder of the seat 10, and the seat belt 12 is inserted through the belt guide 20.

[0020] Specifically, the seat 10 further includes a retractor (not shown) for retracting the seat belt 12, and a portion of the seat belt 12 extends from the retractor and is inserted into the belt guide 20. The retractor includes a locking mechanism that, when the seat belt 12 is pulled at a speed equal to or greater than a certain speed, locks the seat belt 12 from being pulled any further.

[0021] The buckle 22 is provided at the rear of the left or right side of the seat plate 16. Specifically, the buckle 22 is provided on the left or right side of the seat plate 16, opposite the belt guide 20 side. A tongue plate (not shown) provided on the seat belt 12 is inserted into the buckle 22 as appropriate.

[0022] In the example shown in FIG. 1, the belt guide 20 is provided on the right shoulder of the back panel 18, and the buckle 22 is provided on the left rear part of the seat panel 16.

[0023] In such a seat 10, when a tongue plate provided on the seat belt 12 is inserted into the buckle 22, the tongue plate and the buckle 22 are locked together, and the seat belt 12 is connected to the seat 10 as shown in FIG.

[0024] Furthermore, when the seat belt 12 is connected to the seat 10 in this manner, as shown in FIG. 1, the seat belt 12 extends across the left and right sides of the seat 10, covering the occupant's waist, and also extends to connect the belt guide 20 and the buckle 22, covering the occupant's chest.

[0025] In this type of seat 10, when the seat occupant is thrown forward, the seat belt 12 is locked by the retractor to prevent it from being thrown forward, and the seat belt 12 is pulled by the seat occupant. Because the belt guide 20 supports the seat belt 12 extending from the retractor at the shoulder portion of the seat 10, when the seat belt 12 is pulled by the seat occupant in this way, a forward force acts on the shoulder portion of the seat 10 via the belt guide 20.

[0026] 2. Seat frame configuration The final configuration of the seat frame is as shown in Figures 7 to 10, but each main part will be explained step by step. First, a part of the configuration of the seat frame 30 of this embodiment (the periphery of the slider 72) will be explained with reference to Figure 2. Figure 2 is a schematic perspective view showing a part of the configuration of the seat frame 30 of this embodiment (the periphery of the slider 72).

[0027] Hereinafter, the configuration of the seat frame 30 will be specifically described, taking as an example a case where the belt guide 20 is provided on the right shoulder 56R of the shoulders 56R, 56L of the seat frame 30.

[0028] The seat frame 30 forms the framework of the seat 10. In addition to the belt guide 20, the seat frame 30 includes a seat frame 40, a back frame 50, a reclining mechanism 60, a connecting portion 70, a slider 72, a rod 78, and the like.

[0029] The seat panel frame 40 forms the framework of the seat panel 16. The seat panel frame 40 includes a pair of left and right seat panel side frames 42 (42R, 42L) and the like. The seat panel frame 40 also includes a plurality of seat panel cross frames 44.

[0030] The seat panel side frames 42R, 42L are aligned in the left-right direction and extend in the front-rear direction. The seat panel side frame 42R extends in the front-rear direction on the side where the belt guide 20 is provided.

[0031] The seat panel cross frame 44 extends in the left-right direction and connects the seat panel side frames 42R, 42L. Specifically, the seat panel cross frame 44 connects the front end portions and rear end portions of the seat panel side frames 42R, 42L.

[0032] The back panel frame 50 forms the framework of the back panel 18. The back panel frame 50 includes a pair of left and right back panel side frames 52 (52R, 52L), etc. The back panel frame 50 also includes a plurality of back panel cross frames 54. In the following description, with regard to the back panel frame 50 and components that operate together with the back panel frame 50, the side of the seat 10 that faces the back of the seated person may be referred to as the "front side."

[0033] The back panel side frames 52R, 52L are circular rod-shaped members that are aligned in the left-right direction and extend in a direction that intersects with the seat panel 16. Specifically, the back panel side frames 52R, 52L extend in a direction that intersects with the seat panel side frames 42R, 42L.

[0034] The back cross frame 54 extends in the left-right direction and connects the back side frames 52R, 52L. One of the back cross frames 54 connects the ends of the back side frames 52R, 52L opposite to the seat frame 40 side, thereby forming a shoulder portion 56 (56R, 56L).

[0035] The belt guide 20 is connected to the shoulder portion 56R of the back plate frame 50 and supports the seat belt 12. Specifically, the belt guide 20 is connected to the shoulder portion 56R of the back plate frame 50 via a connecting portion 70.

[0036] The reclining mechanism 60 includes a gas spring (not shown), a shaft 62, and a bearing 64. The shaft 62 is a circular rod-shaped member extending in the left-right direction. The shaft 62 is inserted into the back panel side frame 52 behind the seat panel side frame 42.

[0037] One end of the shaft portion 62 is connected to the seat panel side frame 42, and the other end is supported by the bearing portion 64. Furthermore, the bearing portion 64 is connected to the seat panel cross frame 44 behind the seat panel frame 40. For these reasons, the shaft portion 62 serves as a rotation axis for the back panel frame 50.

[0038] The back frame 50 is connected to the seat frame 40 via the reclining mechanism 60, and the back frame 50 can swing within a predetermined range around a rotation axis extending in the left-right direction, specifically, a shaft portion 62. In other words, the back frame 50 can be tilted by the reclining mechanism 60.

[0039] Furthermore, the reclining mechanism 60 makes it possible to appropriately adjust the angle of the back frame 50 relative to the seat frame 40 and to maintain the angle of the back frame 50 relative to the seat frame 40.

[0040] The slider 72 is provided in front of the back panel side frame 52R so as to be slidable in the extending direction of the back panel side frame 52R.

[0041] The slider 72 includes a sliding portion 74 and a connecting portion 76. The sliding portion 74 is a member shaped to fit the surface of the back panel side frame 52R, specifically, having an arc-shaped cross section, and is capable of sliding along the surface of the back panel side frame 52R. The connecting portion 76 protrudes from the front side of the sliding portion 74 and connects to another member.

[0042] The rod 78 is a bar-shaped member that extends in a direction intersecting both the seat frame 40 and the back frame 50 .

[0043] One end of the rod 78 is connected to the connecting portion 76 of the slider 72. Specifically, one end of the rod 78 is connected to the connecting portion 76 so as to be rotatable about a rotation axis in the left-right direction.

[0044] The other end of the rod 78 is connected to the seat panel side frame 42R. Specifically, the other end of the rod 78 is connected to the seat panel side frame 42R so as to be rotatable about a rotation axis in the left-right direction.

[0045] Next, a portion of the configuration of the seat frame 30 of this embodiment (the periphery of the cover portion 80) will be described with reference to Figures 3 and 4 in addition to Figure 2. Figures 3 and 4 are schematic perspective views showing a portion of the configuration of the seat frame 30 of this embodiment (the periphery of the cover portion 80).

[0046] The seat frame 30 also includes cover portions 80 (80R, 80L) and the like. The cover portions 80R, 80L are members that are shaped to fit the surface of the back panel side frame 52, specifically, arc-shaped. Furthermore, a slit 82 is formed in at least the cover portion 80R of the cover portions 80R, 80L.

[0047] The cover portions 80R, 80L are provided on the front surfaces of the back panel side frames 52R, 52L. In particular, the cover portion 80R is provided on the front surface of the back panel side frame 52R so as to cover the sliding portion 74 while allowing the connecting portion 76 to protrude from the slit 82.

[0048] For example, the seat frame 30 shown in Fig. 3 is in a standard state in which the back frame 50 is not tilted backward, and the seat frame 30 shown in Fig. 4 is in a rearward tilted state in which the back frame is tilted backward. When the back frame 50 tilts backward from the standard state shown in Fig. 3, the rod 78 also tilts backward as shown in Fig. 4. Furthermore, the slider 72, which is rotatably supported on one end of the rod 78, slides on the surface of the back side frame 52R toward the seat frame 40 as the rod 78 tilts backward.

[0049] On the other hand, when the back panel frame 50 is tilted forward from the backward tilted state shown in Figure 4 to return to the standard state, the rod 78 also tilts forward as shown in Figure 3, and the slider 72 slides toward the shoulder portion 56R on the surface of the back panel side frame 52R.

[0050] Next, a portion of the configuration of the seat frame 30 of this embodiment (the periphery of the arm 86) will be further described with reference to Figures 5 and 6 in addition to Figures 2 to 4. Figures 5 and 6 are schematic perspective views showing a portion of the configuration of the seat frame 30 of this embodiment (the periphery of the arm 86).

[0051] The slider 72 also includes a transmission portion 77. The seat frame 30 also includes a connecting shaft portion 84, a pair of left and right arms 86 (86R, 86L), etc. The transmission portion 77 is a rod-shaped member that protrudes in the left-right direction from the connecting portion 76.

[0052] The connecting shaft 84 is a rod-shaped member extending in the left-right direction. The connecting shaft 84 extends from the back panel side frame 52R to the back panel side frame 52L and is supported on the front sides of both the back panel side frames 52R and 52L to be rotatable about a rotation axis in the left-right direction. Specifically, the connecting shaft 84 is supported on the front sides of both the cover portions 80R and 80L to be rotatable.

[0053] In addition, the connecting shaft 84 is located closer to the seat panel frame 40 than the slider 72 in the extension direction of the back panel side frame 52. Furthermore, the connecting shaft 84 is located forward of the transmission part 77 of the slider 72 between the back panel side frame 52 and the rod 78. The transmission part 77 is located closer to the front than the connecting shaft 84.

[0054] The arms 86R, 86L are rod-shaped members that face the front sides of the back panel side frames 52R, 52L. The arms 86R, 86L extend from the connecting shaft 84 in a direction that intersects with the axial direction of the connecting shaft 84. Specifically, the arms 86R, 86L extend in a direction that is perpendicular to the axial direction of the connecting shaft 84. For these reasons, one end of each of the arms 86R, 86L is connected to the connecting shaft 84.

[0055] In this way, the arms 86R, 86L are connected to the connecting shaft 84, so when the arm 86R tilts, the arm 86R rotates the connecting shaft 84. Furthermore, the arm 86L tilts in the same manner as the arm 86R in response to the rotation of the connecting shaft 84. In other words, the connecting shaft 84 and the arm 86 tilt in conjunction with each other.

[0056] Furthermore, arms 86R, 86L are tilted backward beforehand, and transmission part 77 supports arm 86R so that arm 86 does not tilt backward due to the arm 86's own weight. In other words, arm 86R is in contact with transmission part 77 of slider 72. Such connecting shaft part 84 and arm 86 move in response to the sliding of slider 72.

[0057] For example, the seat frame 30 shown in FIG. 5 is in a reference state in which the back frame 50 is not tilted backward, while the seat frame 30 shown in FIG. 6 is in a backward-tilted state in which the back frame is tilted backward. When the back frame 50 tilts backward from the reference state shown in FIG. 5, the slider 72 slides on the surface of the back side frame 52R toward the seat frame 40, causing the transmission unit 77 to move along the back side frame 52R and transmit a force toward the seat frame 40 in the extension direction of the back side frame 52R to the arm 86R. When the transmission unit 77 moves toward the connecting shaft 84 along the back side frame 52R, closer to the front than the connecting shaft 84, the arm 86 tilts forward with the connecting shaft 84 as a fulcrum. For these reasons, when the back frame 50 tilts backward in the seat frame 30 shown in FIG. 5, the angle of the arm 86 with respect to the back side frame 52 increases, as shown in FIG. 6. In other words, when the back panel frame 50 tilts backward, the arm 86 is deployed to the front side.

[0058] On the other hand, when the back frame 50 tilts forward from the backward tilted state shown in FIG. 6, the slider 72 slides toward the shoulder 56R on the surface of the back side frame 52R, so the transmission part 77 moves toward the shoulder 56R, and the force acting on the arm 86R toward the seat frame 40 weakens. In other words, when the back frame 50 tilts forward, the arm 86 tilts backward with the connecting shaft part 84 as a fulcrum. For these reasons, when the back frame 50 tilts forward in the seat frame 30 shown in FIG. 6, the angle of the arm 86 with respect to the back side frame 52 becomes smaller as shown in FIG. 5. In other words, when the back frame 50 tilts forward, the arm 86 returns to the state before it was unfolded.

[0059] Next, the configuration of the seat frame 30 of this embodiment will be further described with reference to Figures 7 to 10 in addition to Figures 2 to 6. Figure 7 is a schematic perspective view showing the configuration of the seat frame 30 of this embodiment. Figure 8 is a schematic cross-sectional view showing the AA cross section of the back panel frame 50 of Figure 7. Figure 9 is a schematic perspective view showing the configuration of the seat frame 30 of this embodiment. Figure 10 is a schematic cross-sectional view showing the AA cross section of the back panel frame 50 of Figure 9.

[0060] The seat frame 30 also includes a pair of left and right side supports 88 (88R, 88L), etc. The side supports 88R, 88L form the framework of the side support portions 19R, 19L.

[0061] The side support 88R is provided on the back panel side frame 52R so as to be rotatable about a rotation axis in the extension direction of the back panel side frame 52R, that is, so as to be rotatable in the circumferential direction of the back panel side frame 52R. In addition, the rotation axis of the side support 88R is located more inward in the left-right direction of the back panel frame 50 than the arm 86R.

[0062] The side support 88R extends toward the front side, bends outward in the left-right direction of the back frame 50, and covers the front side of the arm 86R.

[0063] The side support 88L is provided on the back panel side frame 52L so as to be rotatable about a rotation axis in the extension direction of the back panel side frame 52L, that is, so as to be rotatable in the circumferential direction of the back panel side frame 52L. In addition, the rotation axis of the side support 88L is located inside the arm 86L in the left-right direction of the back panel frame 50.

[0064] The side support 88L extends toward the front side, bends outward in the left-right direction of the back frame 50, and covers the front side of the arm 86L.

[0065] As described above, when the slider 72 slides and the arms 86R, 86L tilt, the arms 86R, 86L rotate the side supports 88R, 88L.

[0066] For example, when the seat back frame 50 tilts backward from the seat back frame 30 in the standard state shown in FIGS. 7 and 8 , the left and right side supports 88 rotate inward in the left-right direction. More specifically, the sliding of the slider 72 as the seat back frame 50 tilts backward causes the arm 86 to deploy toward the front, and a force toward the front acts on the side support 88. Because the rotation axis of the side support 88 is located more inward in the left-right direction of the seat back frame 50 than the arm 86, when a force toward the front acts on the side support 88 by the arm 86, the side supports 88R, 88L rotate toward the inside in the left-right direction of the seat back frame 50. For these reasons, when the seat back frame 50 tilts backward from the seat back frame 30 in the standard state shown in FIGS. 7 and 8 , the side supports 88R, 88L move closer to each other, as in the seat frame 30 in the rearward-tilted state shown in FIGS. 9 and 10 .

[0067] On the other hand, when the seat back frame 50 tilts forward from the seat back frame 30 in the rearward tilted state shown in FIGS. 9 and 10 , the left and right side supports 88 rotate outward in the left-right direction. More specifically, as the slider 72 slides with the seat back frame 50 tilting forward, the arm 86 returns to its state before being unfolded, and the force acting on the side supports 88 toward the front side becomes weaker. As described above, the rotation axis of the side support 88 is located on the inner side of the seat back frame 50 in the left-right direction than the arm 86. Therefore, when the force acting on the side support 88 toward the front side becomes weaker, the side supports 88R, 88L rotate toward the outer side in the left-right direction of the seat back frame 50. For these reasons, when the seat back frame 50 tilts forward from the seat back frame 30 in the rearward tilted state shown in FIGS. 9 and 10 , the side supports 88R, 88L move away from each other, as in the seat frame 30 in the standard state shown in FIGS. 7 and 8 .

[0068] In this way, in the seat frame 30, as the back panel frame 50 tilts backward, the slider 72 slides, and the side supports 88 rotate toward each other via the connecting shaft 84 and the arm 86. Also, as the back panel frame 50 tilts forward, the slider 72 slides, and the side supports 88 rotate away from each other via the connecting shaft 84 and the arm 86.

[0069] In the seat frame 30 of this embodiment, the rod 78 extends in a direction intersecting both the seat frame 40 and the back frame 50. One end of the rod 78 is connected to the back side frame 52R via the slider 72, and the other end is connected to the seat side frame 42R. Therefore, it is possible to resist a forward force acting on the back side frame 52R. Furthermore, the slider 72 and the rod 78 allow the back frame 50 to swing due to the reclining mechanism 60 because the slider 72 slides when the back frame 50 tilts. In other words, in the seat frame 30 of this embodiment, both the slider 72 and the rod 78 are able to resist a forward force acting on the back side frame 52R while allowing the back frame 50 to swing due to the reclining mechanism 60. This allows deformation of the back frame 50 to be suppressed even when a load is applied to the belt guide 20 when the seat belt 12 prevents the seat occupant from jumping out. Therefore, according to the seat frame 30 of this embodiment, it is possible to improve the strength of the back panel frame 50 on the belt guide 20 side while suppressing increases in weight and cost.

[0070] Furthermore, in conventional seat frames mounted on buses and the like, the tilting of the back frame and the rotation of the side supports are each performed independently by levers or the like. Therefore, for example, after passengers get off the bus, the bus driver may have to perform operations to tilt the back frame and rotate the side supports on each seat frame to return each seat to its original position. In contrast, in the seat frame 30 of this embodiment, the side supports 88 can be rotated in conjunction with the tilting of the back frame 50. Therefore, with the seat frame 30 of this embodiment, it is possible to omit the operation of the side supports 88.

[0071] This concludes the description of the embodiments of the present invention, but the specific configurations shown in these embodiments are merely examples, and the aspects of the present invention are not limited to the configurations shown in each embodiment.

[0072] In this embodiment, the configuration of the seat frame 30 has been described using an example in which the belt guide 20 is provided on the right shoulder 56R of the seat frame 30, but the belt guide 20 may be provided on the left shoulder 56L instead of the right shoulder 56R. In this case, the slider 72, rod 78, etc. are provided on the left side of the seat frame 30. [Explanation of symbols]

[0073] 10 sheets 20 Belt guide 30 seat frame 16 Seat board 18 Back plate 40 Seat frame 42R Backboard Side Frame 42L backboard side frame 50 Backboard Frame 52R Backboard Side Frame 52L backboard side frame 56R Shoulder 56L Shoulder 60 Reclining mechanism 72 slider 78 Rod

Claims

[Claim 1] A seat frame that forms the framework of a vehicle seat, a seat frame that forms a framework of the seat panel of the seat; A back panel frame that forms a skeleton of the back panel of the seat; a reclining mechanism that swings the back frame relative to the seat frame within a predetermined range; a belt guide connected to the right shoulder portion or the left shoulder portion of the back frame and supporting a seat belt connected to the seat; a slider provided on a first back panel side frame extending in a direction intersecting with the seat panel frame on the side of the back panel frame where the belt guide is provided, the slider being slidable in the extending direction of the first back panel side frame; a rod having one end connected to the slider and the other end connected to a first seat panel side frame extending in the front-rear direction on the side of the seat panel frame where the belt guide is provided, A seat frame characterized in that the slider slides, allowing the back frame to oscillate due to the reclining mechanism, while the rod resists forward forces acting on the back frame.

Images