Vehicle seats

Abstract

To fix a belt guide to a seat frame without using a tool in a vehicle seat.SOLUTION: A seat 1 includes: a seat frame 7 which has right and left first portions 7A and a second portion 7B; a base member 21 which has a plate section 25 having a first belt hole 31, right and left first locking sections 27 which project downward from the plate section and lock each of the first portions, and second locking sections 28 which project downward from the plate section and abut on a front end and a lower end of the second portion; and a belt guide 13 which has a body section 41 which is arranged to face the plate section and has a second belt hole 44, a plurality of locking claws 53 which project downward from the body section and are locked to the plate section, and an edge wall 47 which extends from an edge section of the second belt hole to the inside of the first belt hole. In a vertical direction, the second portion is arranged between the second locking section and the body section. In a longitudinal direction, the second portion is arranged between the second locking section and the edge wall.SELECTED DRAWING: Figure 3

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-mentioned problems, one aspect of the present invention is a vehicle seat (1), comprising: a seat frame (7) having left and right first portions (7A) extending in the front-rear direction and second portions (7B) extending in the left and right direction and connected to front ends of the first portions; a plate portion (25) having a first belt hole (31) through which a seat belt (11) passes; left and right first locking portions (27) protruding downward from the plate portion and locking the first portions, respectively; and a second locking portion (28) protruding downward from the plate portion and abutting against front and lower ends of the second portions. the second portion is disposed between the second engaging portion and the main body portion in the up-down direction, and the second portion is disposed between the second engaging portion and the edge wall in the front-rear direction.

[0007] According to this aspect, in the vehicle seat, the belt guide can be fixed to the seat frame without using tools. By joining the belt guide to the base member, the second portion of the seat frame is disposed between the base member and the belt guide. This restricts the movement of the base member and the belt guide in the front-rear and up-down directions relative to the seat frame. The movement of the base member and the belt guide in the left-right direction relative to the seat frame is restricted by the engagement of the first locking portion and the first portion.

[0008] In the above aspect, the belt guide may have a restriction wall (61) extending from the plate portion into the first belt hole, and the restriction wall may abut against a front end of the second portion.

[0009] According to this aspect, the restricting wall and the edge wall abut against the second portion, thereby restricting movement of the base member and the belt guide in the front-rear direction relative to the seat frame.

[0010] In the above aspect, one of the plurality of locking claws may be locked to a left edge of the first belt hole, and another of the plurality of locking claws may be locked to a right edge of the first belt hole.

[0011] According to this aspect, the belt guide can be coupled to the base member by utilizing the first belt hole.

[0012] In the above aspect, the base member may have a positioning hole (38) formed in the plate portion, and the belt guide may have a positioning protrusion (55) extending downward from the main body portion and engaging with the positioning hole.

[0013] According to this aspect, the belt guide can be connected to the base member.

[0014] In the above aspect, the seat frame may have left and right third parts (7C) extending downward from the rear end of the first part, and a fourth part (7D) extending left and right and connected to the left and right third parts, and a locking hole (24) penetrating in the fore-and-aft direction may be formed in the fourth part, and the base member may have a third locking portion (36) extending downward from the plate portion and locking into the locking hole.

[0015] According to this aspect, it is possible to restrict vertical movement of the rear portion of the base member relative to the seat frame.

[0016] In the above aspect, a plurality of ribs (49) may be provided on the edge wall, and the second portion may be sandwiched between the second engaging portion and the plurality of ribs in the front-rear direction.

[0017] According to this embodiment, the edge wall and the second portion of the seat frame can be reliably brought into contact with each other via the rib.

[0018] In the above aspect, the second portion may be sandwiched between the second engaging portion and the main body portion in the up-down direction.

[0019] According to this aspect, the base member and the belt guide can be fixed to the second portion without rattling.

[0020] In the above aspect, a skin (9) may be disposed along the surface of the plate portion, and a part of the skin may be sandwiched between the plate portion and the belt guide.

[0021] According to this aspect, the belt guide can be disposed on the outer surface of the covering material.

[0022] In the above aspect, the second engagement portion may have a front wall portion (28A) extending downward from an edge of the first belt hole and abutting a front end of the second portion, and a lower wall portion (28B) extending rearward from a lower end of the front wall portion and abutting the lower end of the second portion.

[0023] According to this aspect, the second locking portion can abut against the front end and the lower end of the second portion.

[0024] In the above aspect, the first belt hole may be formed to a size that allows a tongue plate (16) provided on the seat belt to pass therethrough, the second belt hole may be formed to a size that does not allow the tongue plate to pass therethrough, and a slit (51) may be formed in the main body portion that extends from the second belt hole to a side edge of the main body portion.

[0025] According to this aspect, the seat belt having the tongue attached thereto can be disposed in the first belt hole and the second belt hole, and the tongue can be prevented from passing through the second belt hole and being pulled into the seat. Effect of the Invention

[0026] One aspect of the present invention is a vehicle seat (1), comprising: a seat frame (7) having left and right first portions (7A) extending in the front-rear direction and second portions (7B) extending in the left and right direction and connected to front ends of the first portions; a base portion (25) having a first belt hole (31) through which a seat belt (11) passes, left and right first retaining portions (27) protruding downward from the plate portion and retaining the first portions, and second retaining portions (28) protruding downward from the plate portion and abutting the front and lower ends of the second portions. The seat belt has a material (21), a main body portion (41) arranged opposite the plate portion and having a second belt hole (44) through which the seat belt passes, a plurality of locking claws (53) protruding downward from the main body portion and locking to the plate portion, and a belt guide (13) having an edge wall (47) extending from the edge of the second belt hole into the first belt hole, and in the up-down direction, the second portion is arranged between the second locking portion and the main body portion, and in the front-rear direction, the second portion is arranged between the second locking portion and the edge wall.

[0027] According to this aspect, in the vehicle seat, the belt guide can be fixed to the seat frame without using tools. By joining the belt guide to the base member, the second portion of the seat frame is disposed between the base member and the belt guide. This restricts the movement of the base member and the belt guide in the front-rear and up-down directions relative to the seat frame. The movement of the base member and the belt guide in the left-right direction relative to the seat frame is restricted by the engagement of the first locking portion and the first portion.

[0028] In the above aspect, the belt guide may have a restriction wall (61) extending from the plate portion into the first belt hole, and the restriction wall may abut against a front end of the second portion.

[0029] According to this aspect, the restricting wall and the edge wall abut against the second portion, thereby restricting movement of the base member and the belt guide in the front-rear direction relative to the seat frame.

[0030] In the above aspect, one of the plurality of locking claws may be locked to a left edge of the first belt hole, and another of the plurality of locking claws may be locked to a right edge of the first belt hole.

[0031] According to this aspect, the belt guide can be coupled to the base member by utilizing the first belt hole.

[0032] In the above aspect, the base member may have a positioning hole (38) formed in the plate portion, and the belt guide may have a positioning protrusion (55) extending downward from the main body portion and engaging with the positioning hole.

[0033] According to this aspect, the belt guide can be connected to the base member.

[0034] In the above aspect, the seat frame may have left and right third parts (7C) extending downward from the rear end of the first part, and a fourth part (7D) extending left and right and connected to the left and right third parts, and a locking hole (24) penetrating in the fore-and-aft direction may be formed in the fourth part, and the base member may have a third locking portion (36) extending downward from the plate portion and locking into the locking hole.

[0035] According to this aspect, it is possible to restrict vertical movement of the rear portion of the base member relative to the seat frame.

[0036] In the above aspect, a plurality of ribs (49) may be provided on the edge wall, and the second portion may be sandwiched between the second engaging portion and the plurality of ribs in the front-rear direction.

[0037] According to this embodiment, the edge wall and the second portion of the seat frame can be reliably brought into contact with each other via the rib.

[0038] In the above aspect, the second portion may be sandwiched between the second engaging portion and the main body portion in the up-down direction.

[0039] According to this aspect, the base member and the belt guide can be fixed to the second portion without rattling.

[0040] In the above aspect, a skin (9) may be disposed along the surface of the plate portion, and a part of the skin may be sandwiched between the plate portion and the belt guide.

[0041] According to this aspect, the belt guide can be disposed on the outer surface of the covering material.

[0042] In the above aspect, the second engagement portion may have a front wall portion (28A) extending downward from an edge of the first belt hole and abutting a front end of the second portion, and a lower wall portion (28B) extending rearward from a lower end of the front wall portion and abutting the lower end of the second portion.

[0043] According to this aspect, the second locking portion can abut against the front end and the lower end of the second portion.

[0044] In the above aspect, the first belt hole may be formed to a size that allows a tongue plate (16) provided on the seat belt to pass therethrough, the second belt hole may be formed to a size that does not allow the tongue plate to pass therethrough, and a slit (51) may be formed in the main body portion that extends from the second belt hole to a side edge of the main body portion.

[0045] According to this aspect, the seat belt having the tongue attached thereto can be disposed in the first belt hole and the second belt hole, and the tongue can be prevented from passing through the second belt hole and being pulled into the seat. [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 base member according to a first embodiment, as viewed from the back side; [Figure 6] 6 is a cross-sectional view of the belt guide coupling structure according to the first embodiment (a cross-sectional view taken along the line VI-VI in FIG. 2 ). [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] FIG. 13 is a perspective view of a seat back frame according to another embodiment; [Figure 11] 11 is a perspective view of an armrest coupling structure according to another embodiment of the present invention; [Figure 12] FIG. 13 is a side view of a hinge unit according to another embodiment when the armrest is in a stowed position; [Figure 13] FIG. 13 is a side view of a hinge unit according to another embodiment when the armrest is in a use position; 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 base member 21. As shown in Fig. 3, the seat frame 7 has left and right first parts 7A extending forward and backward, and second parts 7B extending left and right and connected to the front ends of the first parts 7A. The seat frame 7 also has left and right third parts 7C extending downward from the rear ends of the first parts 7A, and a fourth part 7D extending left and right and connected to the left and right third parts 7C. The left and right first parts 7A, the second part 7B, and the left and right third parts 7C may be formed by bending a metal rod or a metal pipe. The left and right third parts 7C may be connected to the upper end of a part of the seat frame 7 that constitutes the seat back 4.

[0053] The fourth portion 7D may include a rod-shaped member 7E extending laterally and a bracket 7F connected to the rod-shaped member 7E. The bracket 7F may be formed by bending a metal plate. The bracket 7F of the fourth portion 7D has a locking hole 24 penetrating in the front-rear direction.

[0054] As shown in Figs. 3 and 5, the base member 21 has a plate portion 25 formed in a plate shape, and left and right first locking portions 27 and second locking portions 28 provided on the plate portion 25. The plate portion 25 has a surface facing forward and backward. The plate portion 25 has a first belt hole 31 through which the seat belt 11 passes. The first belt hole 31 penetrates the plate portion 25 in the thickness direction. The first belt hole 31 is formed in the front portion of the plate portion 25. The first belt hole 31 extends in the left-right direction. The first belt hole 31 is formed to a size that allows the tongue plate 16 provided on the seat belt 11 to pass through. The front edge of the first belt hole 31 is located lower than the rear edge of the first belt hole 31.

[0055] As shown in FIG. 5 and FIG. 8, the left and right first locking portions 27 protrude downward from the lower surface of the plate portion 25. Each first locking portion 27 locks the corresponding first portion 7A on the left and right. When each first locking portion 27 locks the corresponding first portion 7A, the vertical and horizontal movement of the base member 21 relative to the first portion 7A is restricted. Each first locking portion 27 may be a clamp that opens downward. Each first locking portion 27 may have an abutment wall 33 extending downward from the plate portion 25 and an elastic claw 34 corresponding to the abutment wall 33. The elastic claw 34 may have a pillar portion 34A extending downward from the plate portion 25 and facing the abutment wall 33 with a gap therebetween, and a claw portion 34B protruding from the lower end of the pillar portion 34A toward the abutment wall 33. The abutment wall 33 and the pillar portion 34A may clamp the first portion 7A from the left and right directions. The lower surface of the plate portion 25 and the claw portion 34B may sandwich the first portion 7A from above and below.

[0056] As shown in Figs. 5 and 6, the second locking portions 28 protrude downward from the plate portion 25 and abut against the front end and the lower end of the second portion 7B. In this embodiment, a pair of left and right second locking portions 28 are provided on the front edge of the first belt hole 31. The left and right second locking portions 28 are arranged at intervals from each other in the left-right direction. Each second locking portion 28 has a front wall portion 28A that extends downward from the edge of the first belt hole 31 and abuts against the front end of the second portion 7B, and a lower wall portion 28B that extends rearward from the lower end of the front wall portion 28A and abuts against the lower end of the second portion 7B. The rear end of each second locking portion 28 is arranged forward of the rear edge of the first belt hole 31.

[0057] The base member 21 has a third locking portion 36 that extends downward from the plate portion 25 and is locked in the locking hole 24. The third locking portion 36 extends downward from the rear portion of the lower surface of the plate portion 25, and then bends and extends rearward. In the left-right direction, the third locking portion 36 is disposed between the left and right first locking portions 27. The lower end of the third locking portion 36 protrudes into the locking hole 24 from the front. By locking the lower end of the third locking portion 36 in the locking hole 24, upward movement of the rear portion of the base member 21 relative to the seat frame 7 is restricted.

[0058] The base member 21 has positioning holes 38 formed in the plate portion 25. In this embodiment, a pair of left and right positioning holes 38 are formed in the rear portion of the plate portion 25. Each positioning hole 38 penetrates the plate portion 25 in the thickness direction.

[0059] 6, the skin 9 is disposed along the surface of the plate portion 25. The skin 9 has a skin opening 9A formed therein corresponding to the first belt hole 31. The skin opening 9A exposes the first belt hole 31 and the positioning hole 38 above the skin 9. The edge of the skin opening 9A is disposed inward from the edge of the plate portion 25.

[0060] 3 and 4, the belt guide 13 has a main body portion 41 disposed to face the plate portion 25. The main body portion 41 is formed in a plate shape and faces the plate portion 25 from above with a gap therebetween. A vertical wall 42 protruding downward is provided at the edge of the main body portion 41. The vertical wall 42 extends along the edge of the main body portion 41. The lower end of the vertical wall 42 abuts against the upper surface of the plate portion 25 via the skin material 9.

[0061] The main body 41 is formed with a second belt hole 44 through which the seat belt 11 passes. The second belt hole 44 penetrates the main body 41 in the thickness direction. When viewed from above, the second belt hole 44 faces the first belt hole 31. The second belt hole 44 extends in the left-right direction. The second belt hole 44 is formed to a size that does not allow the tongue plate 16 to pass through. The second belt hole 44 is formed smaller than the first belt hole 31. When viewed from above, the second belt hole 44 overlaps with the first belt hole 31. A guide recess 46 recessed downward is formed in the front part of the upper surface of the main body 41. The guide recess 46 extends from the front edge of the second belt hole 44 to the front edge of the main body 41.

[0062] As shown in Figs. 4 and 6, the belt guide 13 has an edge wall 47 that extends from the edge of the second belt hole 44 into the first belt hole 31. The edge wall 47 extends downward from the lower surface of the plate portion 25. The edge wall 47 extends along the edge of the second belt hole 44 and is formed in a cylindrical shape. The internal space of the edge wall 47 opens upward and downward and is connected to the second belt hole 44. The edge wall 47 passes through the first belt hole 31, and the lower end of the edge wall 47 is disposed below the plate portion 25. The front and rear parts of the edge wall 47 are formed on flat plates that are parallel to each other.

[0063] The edge wall 47 is provided with a plurality of ribs 49. The plurality of ribs 49 are provided on the outer surface of the front portion of the edge wall 47. Each rib 49 extends in the up-down direction along the front portion of the edge wall 47 and protrudes forward. The plurality of ribs 49 are arranged at intervals in the left-right direction.

[0064] A slit 51 is formed in the main body 41, which extends from the second belt hole 44 to the side edge of the main body 41. The slit 51 reaches the front edge of the main body 41. The slit 51 also extends upward from the lower end of the front part of the edge wall 47, extends forward through the guide recess 46, and extends downward through the vertical wall 42 to reach the lower end of the vertical wall 42. That is, both ends of the slit 51 are open.

[0065] As shown in FIG. 4 and FIG. 7, the belt guide 13 has a plurality of locking claws 53 that protrude downward from the main body 41 and are engaged with the plate portion 25. In this embodiment, a pair of left and right locking claws 53 are provided at the front of the lower surface of the main body 41. The left locking claw 53, which is one of the plurality of locking claws 53, is engaged with the left edge of the first belt hole 31. The right locking claw 53, which is the other of the plurality of locking claws 53, is engaged with the right edge of the first belt hole 31. The left and right locking claws 53 are formed symmetrically with each other. Each locking claw 53 has an elastic piece 53A that extends downward from the lower surface of the plate portion 25 and passes through the first belt hole 31, a claw portion 53B that is provided at the lower end of the elastic piece 53A and is engaged with the edge of the first belt hole 31, and a reinforcing wall 53C that connects the elastic piece 53A and the plate portion 25. The elastic piece 53A is displaceable in the left and right directions. The reinforcing wall 53C adjusts the mobility of the elastic piece 53A. In the front-rear direction, each locking claw 53 is disposed forward of the edge wall 47. In the left-right direction, the left and right locking claws 53 are disposed outward of the edge wall 47 on the left and right.

[0066] 4 and 8, the belt guide 13 has positioning protrusions 55 that extend downward from the plate portion 25 and fit into the positioning holes 38. In this embodiment, a pair of left and right positioning protrusions 55 are formed on the rear part of the main body portion 41.

[0067] Each positioning protrusion 55 fits into the corresponding positioning hole 38, thereby restricting movement of the belt guide 13 in the front-rear and left-right directions relative to the base member 21. Furthermore, each locking claw 53 locks onto the edge of the first belt hole 31, thereby restricting movement of the belt guide 13 in the up-down direction relative to the base member 21. In this manner, the belt guide 13 is fixed to the base member 21. In this manner, the belt guide 13 can be joined to the base member 21 by utilizing the first belt hole 31.

[0068] As shown in FIG. 6, the second portion 7B is disposed between the left and right second locking portions 28 and the main body 41 in the vertical direction. The second portion 7B may be sandwiched between the left and right second locking portions 28 and the main body 41 in the vertical direction. In addition, the second portion 7B is disposed between the left and right second locking portions 28 and the edge wall 47 in the front-rear direction. In the front-rear direction, the second portion 7B may be sandwiched between the second locking portions 28 and the plurality of ribs 49. As a result, the front portions of the base member 21 and the belt guide 13 are supported relative to the second portion 7B so as not to move in the front-rear direction and the vertical direction. The rib 49 allows the edge wall 47 and the second portion 7B of the seat frame 7 to reliably abut against each other. In addition, the base member 21 and the belt guide 13 can be fixed relative to the second portion 7B without rattling.

[0069] As shown in Fig. 4 and Fig. 6, the belt guide 13 may have a restricting wall 61 extending from the plate portion 25 into the first belt hole 31. A pair of restricting walls 61 may be provided on the left and right. The restricting walls 61 may be disposed on the left and right of the slit 51. The restricting walls 61 abut against the front end of the second portion 7B. The restricting walls 61 and the multiple ribs 49 may sandwich the second portion 7B from the front-rear direction. This supports the front portion of the belt guide 13 against the second portion 7B so as not to move in the front-rear direction.

[0070] A part of the skin material 9 is sandwiched between the plate portion 25 and the belt guide 13. The edge of the skin opening 9A is disposed below the belt guide 13 and is hidden from the outside.

[0071] The belt guide 13 is attached to the seat 1 as follows. First, the base member 21 is attached to the seat frame 7. The base member 21 is disposed above the seat frame 7 so that the first belt hole 31 is located above the second portion 7B and the left and right first locking portions 27 are located above the corresponding first portions 7A. In this state, the base member 21 is pushed downward, whereby the left and right first portions 7A are locked to the corresponding first locking portions 27. This determines the position of the base member 21 in the up-down and left-right directions relative to the seat frame 7.

[0072] From this state, the base member 21 is pushed rearward until the front wall portions 28A of the left and right second locking portions 28 abut against the front ends of the second portions 7B. As a result, the bottom wall portions 28B of the left and right second locking portions 28 abut against the bottom ends of the second portions 7B. In addition, the tips of the third locking portions 36 enter the locking holes 24. The front-to-rear position of the belt guide 13 relative to the base member 21 is maintained by the frictional force generated between the first locking portions 27 and the first portions 7A.

[0073] Next, the cover material 9 is placed over the seat frame 7 and the base member 21. At this time, the cover material 9 is placed on the plate portion 25 so that the cover opening 9A is aligned with the first belt hole 31 and the positioning hole .

[0074] Next, the seat belt 11 with the tongue plate 16 attached thereto is pulled out from below to above through the first belt hole 31. The seat belt 11 with the tongue plate 16 attached thereto is pulled out through a gap between the second portion 7B and the rear edge of the first belt hole 31.

[0075] Next, the seat belt 11 is placed in the second belt hole 44 of the belt guide 13 through the slit 51. The tongue plate 16 cannot pass through the slit 51 and the second belt hole 44.

[0076] Next, the belt guide 13 is attached to the base member 21. At this time, the left and right positioning protrusions 55 fit into the corresponding positioning holes 38, and the left and right locking claws 53 are locked to the edges of the first belt holes 31. By fixing the belt guide 13 to the base member 21, the second portion 7B is sandwiched between the left and right second locking portions 28 and the main body portion 41 in the up-down direction. In addition, the second portion 7B is sandwiched between the second locking portions 28 and the multiple ribs 49 in the front-rear direction. In this manner, the belt guide 13 is attached to the seat frame 7.

[0077] According to the above embodiment, in the seat 1, the belt guide 13 can be fixed to the seat frame 7 without using any tools. By joining the belt guide 13 to the base member 21, the second portion 7B of the seat frame 7 is disposed between the base member 21 and the belt guide 13. This restricts the movement of the base member 21 and the belt guide 13 in the front-rear and up-down directions relative to the seat frame 7. The movement of the base member 21 and the belt guide 13 in the left-right direction relative to the seat frame 7 is restricted by the engagement of the first locking portion 27 and the first portion 7A.

[0078] Since the first belt hole 31 is formed to a size that allows the tongue plate 16 provided on the seat belt 11 to pass therethrough and the second belt hole 44 is formed to a size that does not allow the tongue plate 16 to pass therethrough, the seat belt 11 to which the tongue plate 16 is attached can be placed in the first belt hole 31 and the second belt hole 44. In addition, the tongue plate 16 can be prevented from passing through the second belt hole 44 and being pulled into the seat.

[0079] 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.

[0080] Another embodiment of the seat is shown in Fig. 9. As shown in Fig. 9, the rear seat of a three-seater vehicle has a seat 101 constituting the left and center seats, and a seat 102 constituting the right seat, which are continuous from left to right. The seats 101 and 102 are independent of each other.

[0081] The seat 101 has a seat back 103, a seat cushion 104, a headrest 105, and an armrest 106. The seat back 103 is supported at its lower end on a floor 107 of the vehicle so as to be rotatable about a rotation axis extending left and right. A storage recess 108 in which the armrest 106 is disposed is formed in the front part of the part constituting the central seat of the seat back 103. The armrest 106 is disposed in the storage recess 108 and is supported by the seat back 103 so as to be rotatable about a rotation axis extending left and right. The armrest 106 rotates between a use position in which a tip end protrudes forward with respect to a base end supported by the seat back 103, and a storage position in which a tip end is positioned above the base end and disposed inside the storage recess 108. The seat cushion 104 is supported by the seat back 103 so as to be rotatable about a rotation axis extending left and right.

[0082] 10, the seat back 103 has a seat back frame 110. The seat back frame 110 is covered with a pad and a covering material. 10, the seatback frame 110 includes a lower member 114 extending in the left-right direction, left and right side members 115 connected to left and right ends of the lower member 114 and extending upward from the lower member 114, an upper member 117 extending in the left-right direction and connected at its left and right ends to upper ends of the left and right side members 115, a center member 118 extending vertically and having an upper end connected to a middle portion of the upper member 117 in the left-right direction and a lower end connected to a middle portion of the lower member 114 in the left-right direction, left and right base members 119 connected to left and right ends of the lower member 114, respectively, and protruding downward, and a pan frame 120 connected to rear portions of frames formed in the lower member 114, the left and right side members 115, the left and right side members 115, and the upper member 117. The left and right base members 119 are rotatably supported by legs 122 provided on the floor 107.

[0083] Left and right brackets 131 for supporting the armrest 106 are joined to the right side member 115 and the center member 118. The left and right brackets 131 are formed by bending a metal plate. Each bracket 131 has a support portion 131A that protrudes forward from the side member 115 and the center member 118 and faces left and right. The left and right support portions 131A are connected to each other by a cylindrical shaft 132 that extends left and right. The left and right support portions 131A are each provided with a cylindrical pin 134. The left and right pins 134 are arranged on an axis that extends left and right. The left and right pins 134 extend from the left and right support portions 131A in a direction approaching each other. The left and right pins 134 are arranged below the shaft 132.

[0084] 11, the armrest 106 has an armrest frame 136. A pad and a covering material are applied to the armrest frame 136. The armrest frame 136 has armrest side members 136A that form the left and right side portions of the armrest 106, and a connecting member 136B that connects the tips of the left and right armrest side members 136A together.

[0085] Left and right hinge units 140 are coupled to the base ends of the left and right armrest side members 136A. The left and right hinge units 140 have the same structure. As shown in Fig. 12, the hinge unit 140 has a coupling portion 141 coupled to the base end of the armrest side member 136A, a receiving groove 142 that receives the shaft 132, a sliding portion 143 that slides against the pin 134, and a stopper portion 144 that abuts against the pin 134 to maintain the armrest 106 in the use position.

[0086] The joint portion 141 is fastened to a base end of the armrest side member 136A by a fastening member such as a bolt. The receiving groove 142 penetrates the hinge unit 140 in the left-right direction. When the armrest 106 is in the storage position, the receiving groove 142 may be open toward the rear. The receiving groove 142 is provided with a pair of locking claws 146 for holding the shaft 132 in the receiving groove 142. The distance between the pair of locking claws 146 is formed to be smaller than the diameter of the shaft 132. The locking claws 146 are flexible. When the shaft 132 is inserted into the receiving groove 142, each locking claw 146 is elastically deformed to allow the shaft 132 to pass through. A notch 147 is formed in a portion of the armrest side member 136A that overlaps with the receiving groove 142 when viewed from the left-right direction.

[0087] The sliding contact portion 143 is formed on the edge of the hinge unit 140 and extends in an arc shape. When the armrest 106 is in the storage position, the sliding contact portion 143 extends in an arc shape from the front of the shaft 132 downward. The sliding contact portion 143 is in sliding contact with the outer circumferential surface of the pin 134. When the armrest 106 rotates between the storage position and the use position, the sliding contact portion 143 is in sliding contact with the outer circumferential surface of the pin 134 to provide frictional resistance to the rotation of the armrest 106. The sliding contact portion 143 is formed with a hollowed-out portion 151 for adjusting the rigidity of the sliding contact portion 143. The hollowed-out portion 151 may be a hole penetrating the hinge unit 140 in the left-right direction or a hole recessed in the left-right direction. By adjusting the rigidity of the sliding contact portion 143, the frictional resistance provided to the rotation of the armrest 106 is adjusted.

[0088] The stopper portion 144 is a step portion provided on the base end side of the sliding contact portion 143. When the armrest 106 is in the use position, the stopper portion 144 abuts against the pin 134.

[0089] By pushing the base end of armrest 106 towards shaft 132, shaft 132 is received in receiving grooves 142 of left and right hinge units 140, and armrest 106 is rotatably supported on shaft 132. When armrest 106 is in the stored position, an operator can remove armrest 106 from shaft 132 by pulling the base end (lower end) of armrest 106 forward.

[0090] 13, when the armrest 106 is in the use position, the receiving groove 142 opens upward, and the hinge unit 140 is supported from below by the pin 134. Therefore, even if a downward load is applied to the armrest 106, the shaft 132 is maintained within the receiving groove 142, and the armrest 106 will not fall off the shaft 132. [Explanation of symbols]

[0091] 1: Sheet 7: Seat frame 7A: 1st part 7B: 2nd part 7C: 3rd part 7D: 4th part 9:Skin material 9A: Epidermal opening 11: Seat belt 13: Belt guide 16: Tongue plate 21: Base material 24: Locking hole 25: Plate section 27: First locking part 28: Second locking part 28A: Front wall 28B: Lower wall part 31: First belt hole 36: Third locking part 38: Positioning hole 41: Main body 44: Second belt hole 47: Edge wall 49: Rib 51: Slit 53: Locking claw 55: Positioning protrusion 61: Regulatory Wall

Claims

1. A vehicle seat, comprising: a seat frame having left and right first portions extending in the front-rear direction and second portions extending in the left and right direction and connected to front ends of the first portions; a base member including a plate portion having a first belt hole through which a seat belt passes, left and right first locking portions protruding downward from the plate portion and locking the first portions, respectively, and second locking portions protruding downward from the plate portion and abutting against front and lower ends of the second portion; a belt guide including a main body portion disposed opposite the plate portion and having a second belt hole through which the seat belt passes, a plurality of engaging claws protruding downward from the main body portion and engaging with the plate portion, and an edge wall extending from an edge of the second belt hole into the first belt hole, The second portion is disposed between the second engaging portion and the main body portion in the up-down direction, The second portion is disposed between the second engaging portion and the edge wall in the front-rear direction.

2. the belt guide has a restriction wall extending from the plate portion into the first belt hole, The vehicle seat according to claim 1 , wherein the restriction wall abuts against a front end of the second portion.

3. One of the plurality of locking claws is locked to a left edge of the first belt hole, The vehicle seat according to claim 1 , wherein another of the plurality of locking claws is locked to a right edge of the first belt hole.

4. the base member has a positioning hole formed in the plate portion, The vehicle seat according to claim 1 , wherein the belt guide has a positioning protrusion extending downward from the main body portion and fitting into the positioning hole.

5. the seat frame includes left and right third portions extending downward from rear ends of the first portions, and fourth portions extending left and right and connected to the left and right third portions, The fourth portion is formed with a locking hole penetrating in the front-rear direction, The vehicle seat according to claim 1 , wherein the base member has a third engaging portion that extends downward from the plate portion and is engaged with the engaging hole.

6. The edge wall is provided with a plurality of ribs; The vehicle seat according to claim 1 , wherein the second portion is sandwiched between the second engaging portion and the plurality of ribs in the front-rear direction.

7. The vehicle seat according to claim 6 , wherein the second portion is sandwiched between the second engaging portion and the main body portion in the up-down direction.

8. A skin material is disposed along the surface of the plate portion, 2. The vehicle seat according to claim 1, wherein a portion of the covering material is sandwiched between the plate portion and the belt guide.

9. 2. The vehicle seat according to claim 1, wherein the second engaging portion has a front wall portion extending downward from an edge of the first belt hole and abutting against a front end of the second portion, and a lower wall portion extending rearward from a lower end of the front wall portion and abutting against the lower end of the second portion.

10. The first belt hole is formed to a size that allows a tongue plate provided on the seat belt to pass therethrough, The second belt hole is formed to a size such that the tongue plate cannot pass through the second belt hole, The vehicle seat according to claim 1 , wherein the main body portion is formed with a slit that extends from the second belt hole to a side edge of the main body portion.

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