Vehicle seat

Abstract

To fix a belt guide to a seat frame without using a tool in a vehicle seat.SOLUTION: A vehicle seat 1 comprises: a seat frame 7; a belt guide 13 attached to the seat frame; and a coupling member 20 for coupling the belt guide to the seat frame. The seat frame has a first latching portion 22 extending in a first direction. The belt guide includes: a first receiving hole 41 which extends in the first direction and through which the first latching portion passes; and a second receiving hole 42 which extends in a second direction perpendicular to the first direction, and which receives a portion of the coupling member. The coupling member received by the second receiving hole engages with the first latching portion that has passed through the first receiving hole.SELECTED DRAWING: Figure 2

Description

[Technical field]

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

[0002] Patent Document 1 discloses a vehicle seat having a belt guide for regulating the position of a seat belt. The belt guide has a cover member with an opening through which the seat belt passes. The cover member is fixed to a frame by a tapping screw to receive the load from the seat belt. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2018-100040 A Summary of the Invention [Problem to be solved by the invention]

[0004] If tapping screws are used, tools are required to install the belt guide, which reduces work efficiency.

[0005] In view of the above background, an object of the present invention is to fix a belt guide to a seat frame in a vehicle seat without using tools. [Means for solving the problem]

[0006] In order to solve the above problem, a vehicle seat (1) is provided, comprising a seat frame (7), a belt guide (13) attached to the seat frame, and a connecting member (20) connecting the belt guide to the seat frame, wherein the seat frame has a first engagement portion (22) extending in a first direction, and the belt guide has a first receiving hole (41) extending in the first direction and through which the first engagement portion passes, and a second receiving hole (42) extending in a second direction perpendicular to the first direction and receiving a part of the connecting member, and the connecting member received in the second receiving hole engages with the first engagement portion that has passed through the first receiving hole.

[0007] According to this aspect, in the vehicle seat, the belt guide can be fixed to the seat frame without using tools. The first direction, which is the insertion direction of the first locking portion into the first receiving hole, and the second direction, which is the insertion direction of the connecting member into the second receiving hole, are perpendicular to each other. Therefore, even if a load is applied to the first locking portion in a direction that causes it to come out of the first receiving hole, a load is not applied to the connecting member in a direction that causes it to come out of the second receiving hole. Therefore, the belt guide is stably fixed to the seat frame.

[0008] In the above aspect, the seat frame has a plate portion (24) formed on a plane perpendicular to the first direction, a tip portion of the first engagement portion extends in a direction perpendicular to the first direction and the second direction, and a surface of the tip portion of the first engagement portion facing the plate portion may abut against an abutment piece (64) of the connecting member.

[0009] According to this aspect, the coupling member inserted into the second receiving hole can lock the first locking portion.

[0010] In the above aspect, the abutment piece may extend in the second direction within the second receiving hole.

[0011] According to this aspect, by inserting the coupling member into the second receiving hole, the first locking portion can be locked by the abutting piece.

[0012] In the above aspect, the connecting member may have an elastic claw (63) that is displaceable in the first direction, and the belt guide may be provided with a second engaging portion (67) that engages the elastic claw and restricts movement of the connecting member in the second direction.

[0013] According to this aspect, the connecting member is prevented from falling off the belt guide.

[0014] In the above aspect, the second locking portion may be formed within the second receiving hole.

[0015] According to this aspect, the elastic claw and the second locking portion can be hidden inside the belt guide.

[0016] In the above aspect, the belt guide has a leg portion (31) extending along the plate portion, a guide portion (32) connected to the leg portion and through which the seat belt passes, and a first convex portion (51) protruding from the leg portion toward the plate portion, and the plate portion may have a first positioning hole (26) into which the first convex portion fits.

[0017] According to this embodiment, the belt guide is prevented from rotating around the first support portion.

[0018] In the above aspect, the first receiving hole and the second receiving hole may be formed in the leg portion, and an outer surface of the connecting member and an outer surface of the leg portion may cooperate with each other to form a continuous outer surface.

[0019] According to this aspect, the seat belt is prevented from being caught on the connecting member.

[0020] In the above-mentioned aspect, a second positioning hole (27) may be formed in the plate portion, the first engagement portion may be a plate piece cut out from the second positioning hole, and the leg portion may have a plurality of second protrusions (52) that protrude into the second positioning hole and abut against the edge of the second positioning hole.

[0021] According to this embodiment, the belt guide is prevented from rotating around the first support portion.

[0022] In the above aspect, a pair of the second protrusions may be disposed at an interval in the second direction, and the first locking portion may be disposed between the pair of the second protrusions in the second direction.

[0023] According to this embodiment, the belt guide is prevented from rotating around the first support portion.

[0024] In the above aspect, a skin material may be arranged along a surface of the plate portion, a portion of the skin material may be sandwiched between the plate portion and the leg portion, and the first engaging portion and the first protruding portion may penetrate the skin material.

[0025] According to this aspect, the belt guide can be disposed on the outer surface of the covering material. Effect of the Invention

[0026] A vehicle seat (1) has a seat frame (7), a belt guide (13) attached to the seat frame, and a connecting member (20) connecting the belt guide to the seat frame, the seat frame having a first engagement portion (22) extending in a first direction, the belt guide having a first receiving hole (41) extending in the first direction and through which the first engagement portion passes, and a second receiving hole (42) extending in a second direction perpendicular to the first direction and receiving a part of the connecting member, the connecting member received in the second receiving hole engages with the first engagement portion that has passed through the first receiving hole.

[0027] According to this aspect, the belt guide can be fixed to the seat frame of the vehicle seat without using tools. The first direction, which is the insertion direction of the first locking portion into the first receiving hole, and the second direction, which is the insertion direction of the connecting member into the second receiving hole, are perpendicular to each other, so that even if a load is applied to the first locking portion in a direction that causes it to slip out of the first receiving hole, a load is not applied to the connecting member in a direction that causes it to slip out of the second receiving hole. Therefore, the belt guide is stably fixed to the seat frame.

[0028] In the above aspect, the seat frame has a plate portion (24) formed on a plane perpendicular to the first direction, a tip portion of the first engagement portion extends in a direction perpendicular to the first direction and the second direction, and a surface of the tip portion of the first engagement portion facing the plate portion may abut against an abutment piece (64) of the connecting member.

[0029] According to this aspect, the coupling member inserted into the second receiving hole can lock the first locking portion.

[0030] In the above aspect, the abutment piece may extend in the second direction within the second receiving hole.

[0031] According to this aspect, by inserting the coupling member into the second receiving hole, the first locking portion can be locked by the abutting piece.

[0032] In the above aspect, the connecting member may have an elastic claw (63) that is displaceable in the first direction, and the belt guide may be provided with a second engaging portion (67) that engages the elastic claw and restricts movement of the connecting member in the second direction.

[0033] According to this aspect, the connecting member is prevented from falling off the belt guide.

[0034] In the above aspect, the second locking portion may be formed within the second receiving hole.

[0035] According to this aspect, the elastic claw and the second locking portion can be hidden inside the belt guide.

[0036] In the above-mentioned aspect, the belt guide has a leg portion (31) extending along the plate portion, a guide portion (32) connected to the leg portion through which the seat belt passes, and a first convex portion (51) protruding from the leg portion toward the plate portion, and the plate portion may have a first positioning hole (26) into which the first convex portion fits.

[0037] According to this embodiment, the belt guide is prevented from rotating around the first support portion.

[0038] In the above aspect, the first receiving hole and the second receiving hole may be formed in the leg portion, and an outer surface of the connecting member and an outer surface of the leg portion may cooperate with each other to form a continuous outer surface.

[0039] According to this aspect, the seat belt is prevented from being caught on the connecting member.

[0040] In the above-mentioned aspect, a second positioning hole (27) may be formed in the plate portion, the first engagement portion may be a plate piece cut out from the second positioning hole, and the leg portion may have a plurality of second protrusions (52) that protrude into the second positioning hole and abut against the edge of the second positioning hole.

[0041] According to this embodiment, the belt guide is prevented from rotating around the first support portion.

[0042] In the above aspect, a pair of the second protrusions may be disposed at an interval in the second direction, and the first locking portion may be disposed between the pair of the second protrusions in the second direction.

[0043] According to this embodiment, the belt guide is prevented from rotating around the first support portion.

[0044] In the above aspect, a skin material may be arranged along a surface of the plate portion, a portion of the skin material may be sandwiched between the plate portion and the leg portion, and the first engaging portion and the first protruding portion may penetrate the skin material.

[0045] According to this aspect, the belt guide can be disposed on the outer surface of the covering material. [Brief description of the drawings]

[0046] [Figure 1] FIG. 1 is a perspective view of a seat according to a first embodiment; [Diagram 2] FIG. 1 is a perspective view of a belt guide according to a first embodiment; [Diagram 3] FIG. 1 is an exploded perspective view of a belt guide connection structure according to a first embodiment; [Figure 4] FIG. 1 is a perspective view of a belt guide according to a first embodiment, seen from the rear side; [Diagram 5] FIG. 1 is a perspective view of a connecting member according to a first embodiment; [Figure 6] 1 is a bottom view of a coupling member according to a first embodiment; [Figure 7] 7 is a cross-sectional view of the belt guide coupling structure according to the first embodiment (a cross-sectional view taken along the line VII-VII in FIG. 2 ). [Figure 8] 8 is a cross-sectional view of the belt guide coupling structure according to the first embodiment (a cross-sectional view taken along the line VIII-VIII in FIG. 2 ). [Figure 9] FIG. 13 is a perspective view of a seat according to another embodiment; [Figure 10] 11 is a bottom view of a belt guide according to another embodiment; [Figure 11] FIG. 13 is an exploded perspective view of a belt guide coupling structure according to another embodiment of the present invention; DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0047] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A vehicle seat according to an embodiment of the present invention will now be described with reference to the drawings. The seat may be installed in a vehicle such as an automobile, a train, an airplane, a ship, or the like.

[0048] As shown in FIG. 1, the seat 1 has a seat cushion 3 provided on a floor 2, a seat back 4, and a headrest 5. The seat cushion 3 supports the buttocks of a user from below. The seat back 4 extends upward from the rear of the seat cushion 3. The seat back 4 supports the back of the user from behind. The headrest 5 is provided in the center of the upper end of the seat back 4. The headrest 5 supports the head of the user from behind.

[0049] The seat cushion 3 and the seat back 4 each have a seat frame 7 forming a framework, a pad 8 supported by the seat frame 7, and a covering material 9 covering the surface of the pad 8.

[0050] A belt retractor 12 that retracts the seat belt 11 is provided inside the seat back 4. A belt guide 13 that defines a path for the seat belt 11 is provided at the upper end of the seat back 4. The seat belt 11 extends upward from the belt retractor 12 inside the seat back 4, protrudes from the upper end of the seat back 4, passes through the belt guide 13, and extends to the front side of the seat belt 11. In other words, the belt guide 13 determines the position at the upper end of the seat back 4 through which the seat belt 11 passes.

[0051] One end of the seat belt 11 is connected to a belt anchor 15 connected to the seat cushion 3. A tongue plate 16 is provided in a portion of the seat belt 11 between the belt guide 13 and the belt anchor 15. The seat belt 11 passes through an insertion hole formed in the tongue plate 16, and the tongue plate 16 is movable in the longitudinal direction of the seat belt 11. The belt guide 13 and the belt anchor 15 are provided on one side in the width direction of the seat 1. A buckle 17 that is detachably connected to the tongue plate 16 is provided on the other side in the width direction of the seat cushion 3.

[0052] As shown in Figs. 2 and 3, the belt guide 13 is attached to the seat frame 7 by a connecting member 20. As shown in Fig. 3, the seat frame 7 has a first locking portion 22 extending in a first direction. In this embodiment, the first direction is the up-down direction. The direction perpendicular to the first direction is the second direction, and the direction perpendicular to the first and second directions is the third direction. The second direction may be the front-rear direction, and the third direction may be the left-right direction.

[0053] The seat frame 7 has a plate portion 24 formed on a plane perpendicular to the first direction. In this embodiment, the surface of the plate portion 24 faces the up-down direction. The plate portion 24 is provided at the upper end of the seat back 4. The plate portion 24 is provided inside, i.e., below, the skin material 9. A pad 8 may be provided inside the skin material 9.

[0054] In this embodiment, the seat frame 7 has a pair of left and right first locking portions 22. The left and right first locking portions 22 extend upward from the plate portion 24. Each first locking portion 22 is a plate piece cut and raised from the plate portion 24. Each first locking portion 22 has a base end portion 22A extending upward from the plate and a tip end portion 22B extending to the left and right sides from the upper end of the base end portion 22A. The tip ends 22B extend in directions away from each other. In other words, the tip ends 22B of the first locking portions 22 extend in a direction perpendicular to the first direction and the second direction. The base end portion 22A and the tip end portion 22B are formed by bending a plate piece.

[0055] The plate portion 24 is formed with a first positioning hole 26 and a pair of second positioning holes 27. The first positioning hole 26 and the pair of second positioning holes 27 penetrate the plate portion 24 in the thickness direction. The pair of second positioning holes 27 are formed by cutting and raising the corresponding first locking portions 22. Each first locking portion 22 is provided on an edge portion of the corresponding second positioning hole 27. Each second positioning hole 27 extends in the left-right direction and is aligned with each other in the left-right direction. Each first locking portion 22 is provided on an edge portion of two second positioning holes 27 that are close to each other.

[0056] 7 and 8, the skin 9 has a skin opening 9A corresponding to the pair of first locking portions 22, the first positioning hole 26, and the pair of second positioning holes 27. The pair of first locking portions 22, the first positioning hole 26, and the pair of second positioning holes 27 are exposed above the skin 9 through the skin opening 9A.

[0057] As shown in FIG. 3 and FIG. 4, the belt guide 13 has a leg portion 31 extending along the plate portion 24, and a guide portion 32 connected to the leg portion 31 and through which the seat belt 11 passes. The leg portion 31 has a thickness in the vertical direction. A plurality of hollow portions 34 may be formed on the bottom surface of the leg portion 31. The guide portion 32 protrudes upward from the leg portion 31 and has a belt insertion hole 35 through which the seat belt 11 passes. In this embodiment, the belt insertion hole 35 penetrates the guide portion 32 from the front to the rear. The belt insertion hole 35 is an elongated hole and extends in the left-right direction. In addition, the belt insertion hole 35 may be inclined upward toward the left-right inner side of the seat back 4. The guide portion 32 has a slit 36 ​​formed therein, which extends from the belt insertion hole 35 to the outer edge of the guide portion 32. The seat belt 11 is disposed in the belt insertion hole 35 through the slit 36.

[0058] The belt guide 13 has a first receiving hole 41 and a second receiving hole 42. The first receiving hole 41 extends in a first direction (up-down direction) and the first locking portion 22 passes through it. The second receiving hole 42 extends in a second direction (front-rear direction) perpendicular to the first direction and receives a part of the connecting member 20.

[0059] The first receiving hole 41 and the second receiving hole 42 are formed in the leg 31. The leg 31 is formed with a recess 43 recessed downward from the upper surface of the leg 31. The recess 43 extends in the front-rear direction and opens at the front end of the leg 31. The recess 43 is defined by a recess bottom surface 43A, left and right recess side surfaces 43B, and a recess rear surface 43C, and opens upward and forward. The first receiving hole 41 extends from the bottom surface of the leg 31 to the recess bottom surface 43A and communicates with the recess 43. The second receiving hole 42 is recessed rearward from the recess rear surface 43C. The second receiving hole 42 is divided into an upper hole 42A and a lower hole 42B by a horizontal partition wall 45 whose surfaces face up and down. The upper hole 42A and the lower hole 42B extend in the left-right direction. The lower hole 42B may also be divided into three in the left-right direction by a pair of vertical partition walls whose surfaces face left and right.

[0060] As shown in FIG. 4, a first protrusion 51 and a plurality of second protrusions 52 are provided on the bottom surface of the leg 31. The first protrusion 51 is formed in a columnar shape and protrudes from the bottom surface of the leg 31 toward the plate portion 24, i.e., downward. The plurality of second protrusions 52 include a pair of second protrusions 52 arranged at an interval in the second direction (front-rear direction). Each second protrusion 52 is formed in a plate shape with a surface facing front-rear, and protrudes downward from the front and rear edges of the first receiving hole 41. In the second direction (front-rear direction), the first locking portion 22 is arranged between the pair of second protrusions 52. Each second protrusion is formed to be tapered toward its tip.

[0061] The first protrusion 51 passes through the skin opening 9A and fits into the first positioning hole 26. As shown in FIG. 7, the pair of second protrusions 52 passes through the skin opening 9A and enters one of the second positioning holes 27, and abuts against the edge of the second positioning hole 27. The pair of second protrusions 52 abut against the front edge and the rear edge of the second positioning hole 27. That is, the pair of second protrusions 52 fits into one of the second positioning holes 27. The first protrusion 51 fits into the first positioning hole 26, and the pair of second protrusions 52 fits into one of the second positioning holes 27, so that the position of the belt guide 13 in the horizontal direction relative to the plate portion 24 is determined. At this time, the tip portions 22B of the pair of first locking portions 22 pass through the first receiving holes 41 and are disposed in the recess 43.

[0062] 5 and 6, the connecting member 20 has an upper wall portion 61 whose surface faces up and down, a front wall portion 62 extending downward from the front end of the upper wall portion 61, and an elastic claw 63 and a pair of abutment pieces 64 extending rearward from the front wall portion 62. In the left-right direction, the elastic claw 63 is disposed between the pair of abutment pieces 64. The pair of abutment pieces 64 are cantilevers extending rearward. The base of each abutment piece 64 is connected to the upper wall portion 61 by a reinforcing wall 64A.

[0063] The elastic claw 63 has a beam portion 63A extending rearward and a claw portion 63B protruding downward from the tip of the beam portion 63A. The tip of the beam portion 63A is displaceable in a first direction (up and down direction). The base end of the beam portion 63A is connected to the upper wall portion 61 by a reinforcing wall 63C.

[0064] As shown in Figs. 7 and 8, the rear ends of the elastic claw 63 and the pair of abutting pieces 64 enter the lower hole 42B, and the rear end of the upper wall portion 61 enters the upper hole 42A. This restricts the movement of the connecting member 20 in the up-down direction and the left-right direction relative to the belt guide 13. Each abutting piece 64 extends in the second direction in the second receiving hole 42. As shown in Fig. 8, the belt guide 13 is provided with a second locking portion 67 that locks the elastic claw 63 and restricts the movement of the connecting member 20 in the second direction (front-rear direction). The second locking portion 67 is formed in the lower wall portion that defines the lower portion of the lower hole 42B, and penetrates from the lower hole 42B to the bottom surface of the leg portion 31. The claw portion 63B of the elastic claw 63 is locked to the second locking portion 67, thereby restricting the movement of the connecting member 20 in the front-rear direction relative to the belt guide 13. The second locking portion 67 is formed in the second receiving hole 42.

[0065] At this time, as shown in Fig. 7, the connecting member 20 engages with the first locking portions 22 that have passed through the first receiving holes 41. In detail, the surfaces of the tip portions 22B of the first locking portions 22 that face the plate portion 24 come into contact with the contact pieces 64 of the connecting member 20. Each contact piece 64 extends in the front-rear direction below the tip portions 22B of the corresponding first locking portions 22. This restricts the vertical movement of each first locking portion 22 relative to the belt guide 13.

[0066] As described above, the belt guide 13 is fixed to the plate portion 24 of the seat frame 7 by the connecting member 20. At this time, a part of the cover material 9 is sandwiched between the plate portion 24 and the leg portion 31. The first locking portions 22 and the first protrusions 51 extend vertically, penetrating the cover material 9. The second protrusions 52 also extend vertically, penetrating the cover material 9.

[0067] 2, the outer surface of the connecting member 20 and the outer surface of the leg portion 31 cooperate with each other to form a continuous outer surface. The upper surface of the upper wall portion 61 of the connecting member 20 is disposed in the same plane as the upper surface of the leg portion 31. Moreover, the front surface of the front wall portion 62 of the connecting member 20 is disposed in the same plane as the front surface of the leg portion 31. In this manner, the connecting member 20 is disposed inside the recess 43 and the second receiving hole 42. This prevents the seat belt 11 from getting caught on the connecting member 20.

[0068] The belt guide 13 is attached to the seat 1 in the following manner. First, the pad 8 and the cover material 9 are placed on the seat frame 7, and the seat back 4 is prepared. The cover material 9 is also placed on the plate portion 24. The pair of first locking portions 22 pass through the cover opening 9A and protrude upward from the cover material 9.

[0069] Next, the legs 31 of the belt guide 13 are positioned above the plate portion 24 so that the pair of first locking portions 22 pass through the first receiving holes 41. At this time, the first protrusion 51 fits into the first positioning hole 26, and the pair of second protrusions 52 fits into one of the second positioning holes 27, thereby determining the position of the belt guide 13 relative to the plate portion 24. In this state, the edge of the skin opening 9A is clamped between the plate portion 24 and the legs 31. In addition, the tip portions 22B of the pair of first locking portions 22 are positioned within the recessed portion 43.

[0070] Next, the connecting member 20 is inserted into the recess 43 and the second receiving hole 42. At this time, each abutting piece 64 passes under the tip end 22B of the corresponding first locking portion 22 and enters the second receiving hole 42. In addition, the elastic claw 63 passes between the pair of first locking portions 22 and enters the second receiving hole 42. The elastic claw 63 is locked to the second locking portion 67, whereby the connecting member 20 is fixed to the belt guide 13.

[0071] According to the above embodiment, in the seat 1, the belt guide 13 can be fixed to the seat frame 7 without using tools. The first direction, which is the insertion direction of the first locking portion 22 into the first receiving hole 41, and the second direction, which is the insertion direction of the connecting member 20 into the second receiving hole 42, are perpendicular to each other. Therefore, even if a load is applied to the first locking portion 22 in a direction to pull out of the first receiving hole 41, a load is not applied to the connecting member 20 in a direction to pull out of the second receiving hole 42. Therefore, the belt guide 13 is stably fixed to the seat frame 7. The connecting member 20 inserted into the second receiving hole 42 is restricted from moving in the up-down direction, so that the first locking portion 22 can be stably locked.

[0072] Since the second locking portion 67 is formed in the second receiving hole 42, the elastic claw 63 and the second locking portion 67 can be hidden inside the belt guide 13. This makes it possible to prevent the connecting member 20 from being detached from the belt guide 13.

[0073] Although the description of the specific embodiment is finished above, the present invention is not limited to the above embodiment and can be widely modified. For example, the belt guide 13 is not limited to the upper end of the seat back 4, but may be provided on the side of the seat back 4, the side of the seat cushion 3, the side of a pillar that constitutes the vehicle interior, etc. In addition, the direction of the belt guide 13 may be set arbitrarily according to the direction of the seat belt 11.

[0074] In another embodiment, as shown in FIG. 9 and FIG. 10, the belt guide 100 has a latch 101, a first protrusion 102, and a second protrusion 103 at its bottom. The latch 101 has a cylindrical pillar portion 101A protruding from the center of the bottom of the belt guide 100, and a pair of claw portions 101B protruding radially outward from the tip of the pillar portion 101A. The first protrusion 102 and the second protrusion 103 protrude parallel to the pillar portion 101A from the bottom of the belt guide 100. The first protrusion 102 and the second protrusion 103 may be formed in a columnar or plate shape. The first protrusion 102 and the second protrusion 103 may be disposed radially outwardly away from the latch 101. The latch 101 may be disposed between the first protrusion 102 and the second protrusion 103. A guide portion 32 through which the seat belt 11 passes is provided at the upper portion of the belt guide 100.

[0075] As shown in FIG. 11, a latch hole 111, a first hole 112, and a second hole 113 are formed in the plate portion 24 of the seat frame 7. The latch hole 111, the first hole 112, and the second hole 113 are each a through hole. The latch hole 111 has a circular central portion 111A through which the column portion 101A can pass, and a pair of extension portions 111B extending radially outward from the central portion 111A. The first hole 112 and the second hole 113 are formed around the latch hole 111. The first hole 112 and the second hole 113 are arranged on opposite sides of each other with the latch hole 111 as a center.

[0076] The first hole 112 extends in a circumferential direction centered on the latch hole 111, and has a first end 112A and a second end 112B. The first end 112A is an end in a clockwise direction centered on the latch hole 111. The second end 112B is an end in a counterclockwise direction centered on the latch hole 111. A locking portion 112C protruding toward the inner edge is provided on the outer edge of the first hole 112. The locking portion 112C may be provided on the inner edge of the first hole 112 and protrude toward the outer edge.

[0077] The second hole 113 extends in the circumferential direction centered on the latch hole 111, and has a third end 113A and a fourth end 113B. The third end 113A is an end in the clockwise direction centered on the latch hole 111. The fourth end 113B is an end in the counterclockwise direction centered on the latch hole 111. The width of the second hole 113 narrows from the third end 113A to the fourth end 113B.

[0078] A cover material 9 is provided on the upper surface of the plate portion 24. The cover material 9 has a cover opening 9A corresponding to the latch hole 111, the first hole 112, and the second hole 113. The cover opening 9A exposes the latch hole 111, the first hole 112, and the second hole 113 above the cover material 9.

[0079] The belt guide 100 is attached to the plate portion 24 in the following manner. First, the latch 101 is inserted into the latch hole 111. In the vertical direction, the pair of claw portions 101B are aligned with the pair of expansion portions 111B, so that the latch 101 can pass through the latch hole 111. This state is the initial state of the belt guide 100. At this time, the first protrusion 102 protrudes into the first hole 112 and is located at the first end 112A. Moreover, the second protrusion 103 protrudes into the second hole 113 and is located at the third end 113A.

[0080] Next, the belt guide 100 is rotated 90 degrees counterclockwise around the latch 101 from the initial state. As a result, the pair of claws 101B of the latch 101 are shifted relative to the pair of expansion parts 111B and disposed below the plate part 24. As a result, the pair of claws 101B are engaged with the edge part of the latch hole 111, and the latch 101 cannot come out of the latch hole 111. At this time, the second protrusion 103 moves from the third end 113A to the fourth end 113B in the second hole 113 and abuts against the fourth end 113B. As a result, the rotation of the belt guide 100 in the counterclockwise direction is restricted. In addition, the second protrusion 103 is sandwiched between the inner edge and the outer edge of the second hole 113 at the fourth end 113B. As a result, rattling of the belt guide 100 relative to the plate part 24 is suppressed.

[0081] Also, the first protrusion 102 moves from the first end 112A to the second end 112B within the first hole 112. In this process, the first protrusion 102 is pushed by the locking portion 112C and elastically deforms, climbing over the locking portion 112C. The first protrusion 102 returns to its original shape when it reaches the second end 112B. The first protrusion 102 is locked by the locking portion 112C at the second end 112B, and the movement toward the first end 112A is restricted. This restricts the clockwise rotation of the belt guide 100 about the latch 101. As a result, the belt guide 100 is stably fixed to the plate portion 24. [Explanation of symbols]

[0082] 1: Sheet 3: Seat cushion 4: Seat back 7: Seat frame 9:Skin material 11: Seat belt 13: Belt guide 20: Joint member 22: First locking portion 22A: Proximal end 22B:Tip 24: Plate section 26: First positioning hole 27: Second positioning hole 31: Legs 32: Guide section 41: First receiving hole 42: Second receiving hole 43: Recess 51: First protrusion 52: Second convex part 63: Elastic claw 64: Contact piece 67: Second locking part

Claims

1. A mounting structure for mounting a mounting member to a frame, a connecting member for connecting the attached member to the frame, the frame has a first locking portion, the workpiece has a first receiving hole through which the first engaging portion passes and a second receiving hole that receives a portion of the connecting member, An attachment structure in which the coupling member received in the second receiving hole engages with the first locking portion that has passed through the first receiving hole.

2. The first engaging portion extends in a first direction, the frame has a plate portion formed on a plane perpendicular to the first direction, a tip end of the first engaging portion extends in a direction perpendicular to the first direction and a second direction perpendicular to the first direction, The mounting structure according to claim 1 , wherein a surface of the tip of the first engaging portion facing the plate portion abuts against a contact piece of the connecting member.

3. An installation structure as described in Claim 2, wherein the abutment piece extends in the second direction within the second receiving hole.

4. The connecting member has an elastic claw that is displaceable in the first direction, 3. The mounting structure according to claim 2, wherein the workpiece is provided with a second locking portion that locks the elastic claw and restricts movement of the connecting member in the second direction.

5. An installation structure as described in Claim 4, wherein the second locking portion is formed within the second receiving hole.

6. The mounting member has a leg portion extending along the plate portion, a guide portion connected to the leg portion and through which the seat belt passes, and a first convex portion protruding from the leg portion toward the plate portion, The mounting structure according to claim 2 , wherein the plate portion has a first positioning hole into which the first protrusion fits.

7. The first receiving hole and the second receiving hole are formed in the leg portion, 7. The mounting structure of claim 6, wherein the outer surface of the connecting member and the outer surface of the leg cooperate to form a continuous outer surface.

8. A second positioning hole is formed in the plate portion, the first locking portion is a plate piece cut and raised from the second positioning hole, The mounting structure according to claim 6 , wherein the leg portion has a plurality of second protrusions that protrude into the second positioning hole and abut against an edge of the second positioning hole.

9. A pair of the second protrusions are arranged at intervals in the second direction, The mounting structure according to claim 8 , wherein the first locking portion is disposed between the pair of second protrusions in the second direction.

10. An attachment structure as described in claim 1, wherein the frame is a seat back frame of a vehicle seat, and the attachment member is a belt guide.

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