Seat back locking device and vehicle seat

Abstract

The strap that releases the rotational restriction on the seatback prevents it from tilting in the direction of the seat width. [Solution] The seat back locking device 50 includes a lock body 52 provided on the side of the seat back which is rotatably connected to the vehicle body, which engages with a striker provided on the side of the vehicle body and has a lock release member 60 which releases the engagement when operated upward on the seat, a strap 64 inserted along the vertical direction of the seat through a through hole formed in the shoulder of the seat back, a rod 62 connecting the lock release member 60 and the strap 64, and a rod guide 70 fixed to the lock body 52 and engaging with the rod 62, which allows displacement of the rod 62 in the vertical direction of the seat and limits displacement of the rod 62 in the width direction of the seat.

Description

Technical Field

[0001] The present invention relates to a vehicle seat, and particularly to a locking device for a seat back.

Background Art

[0002] The vehicle seat disclosed in Patent Document 1 below includes a locking mechanism that restricts the rotation of the seat back with respect to the vehicle body, and a unlocking mechanism that releases the rotation restriction of the seat back by the locking mechanism. The unlocking mechanism operates by pulling a strap provided on the seat back upward above the seat. The strap is inserted through a through hole formed in the shoulder of the seat back and protrudes upward from the shoulder of the seat back above the seat.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] In the above prior art, since the strap is inclined outward in the seat width direction, there is room for improvement from the viewpoint of improving the appearance quality.

[0005] An object of the present invention is to obtain a locking device for a seat back and a vehicle seat that can suppress the inclination of a strap that releases the rotation restriction of the seat back in the seat width direction.

Means for Solving the Problems

[0006] The seat back locking device of the first embodiment includes a lock body provided on the side of the seat back which is rotatably connected to the vehicle body, and which engages with a striker provided on the side of the vehicle body and has a release member which is operated upward on the seat to release the engagement; a strap inserted through a through hole formed in the shoulder of the seat back along the vertical direction of the seat; a rod connecting the release member and the strap; and a rod guide fixed to the lock body and engaging with the rod, which allows displacement of the rod in the vertical direction of the seat and restricts displacement of the rod in the width direction of the seat.

[0007] In the first embodiment of the seatback locking device, a locking body provided on the side of the seatback, which is rotatably connected to the vehicle body, engages with a striker provided on the side of the vehicle body. This restricts the rotation of the seatback. A release member of the locking body is operated upward on the seat to release the engagement. This releases the restriction on the rotation of the seatback. A strap is inserted through a through hole formed in the shoulder of the seatback, along the vertical direction of the seat. This strap and the release member are connected by a rod. A rod guide fixed to the locking body engages with this rod. This rod guide allows displacement of the rod in the vertical direction of the seat and restricts displacement of the rod in the width direction of the seat. This prevents the rod from tilting in the width direction of the seat, and thus prevents the strap from tilting in the width direction of the seat due to the tilt of the rod.

[0008] In the second embodiment of the seat back locking device, the rod guide is made of resin, as in the first embodiment.

[0009] In the second embodiment of the seat back locking device, the rod guide is made of resin, which allows for cost reduction, for example.

[0010] In the third embodiment of the seat back locking device, the rod guide is made of a metal plate, as in the first embodiment.

[0011] In the third embodiment of the seat back locking device, the rod guide is made of a metal plate, which makes it easier to ensure durability, for example.

[0012] In the fourth embodiment, the seat back locking device is such that, in the first embodiment, the rod guide is an actuator that displaces the rod upwards from the seat.

[0013] In the seat back locking device of the fourth embodiment, the actuator that displaces the rod upwards on the seat also serves as a rod guide, thus reducing costs compared to, for example, the case where a dedicated rod guide is provided.

[0014] The seat back locking device of the fifth embodiment, in the third or fourth embodiment, has a rod body made of a metal wire and a resin part made of resin, attached to the rod body and engaging with the rod guide.

[0015] In the fifth embodiment of the seat back locking device, a resin part made of resin is attached to a rod body made of metal wire, and the resin part engages with a rod guide. This prevents the generation of abnormal noise, for example, caused by metal-on-metal contact.

[0016] A vehicle seat of the sixth embodiment comprises a seat cushion on which a vehicle occupant sits, a seat back that is rotatably connected to the vehicle body and supports the back of the occupant, and a seat back locking device of any one of the first to fifth embodiments, in which the locking body is provided on the side of the seat back and the strap is inserted through a through hole formed in the shoulder of the seat back.

[0017] In the vehicle seat according to the sixth aspect, the back of the occupant sitting on the seat cushion is supported by the seat back. The seat back is connected to the vehicle body so as to be rotatable. A lock body of a lock device for the seat back is provided on a side portion of the seat back, and a strap of the lock device is inserted through a through hole formed in the shoulder portion of the seat back. Since this lock device is the one of any one of the first aspect to the fifth aspect, the above-described effects can be obtained.

Effects of the Invention

[0018] As described above, according to the lock device for the seat back and the vehicle seat according to the present invention, it is possible to suppress the strap for releasing the rotation restriction of the seat back from tilting in the seat width direction.

Brief Description of the Drawings

[0019] [Figure 1] It is a perspective view showing a vehicle seat according to the first embodiment. [Figure 2] It is a perspective view showing a frame and a lock device of a seat back of a vehicle seat according to the first embodiment. [Figure 3] It is a perspective view showing an enlarged part of the configuration shown in FIG. 2. [Figure 4] It is an exploded perspective view showing a part of the lock device according to the first embodiment. [Figure 5] It is a perspective view for explaining the displacement and displacement limitation of a rod of a lock device according to the first embodiment. [Figure 6] It is a cross-sectional view for explaining the engagement between a pad and a rod of a seat back in the first embodiment. [Figure 7] It is a cross-sectional view showing a state where a strap is tilted by the engagement between a pad and a rod of a seat back in a comparative example. [Figure 8] It is a perspective view showing a configuration around a lock device of a seat back in a vehicle seat according to the second embodiment. [Figure 9] It is a perspective view showing a part of the configuration shown in FIG. 8. [Figure 10] It is a perspective view showing a rod. [Figure 11] It is a perspective view for explaining the displacement and displacement limitation of the rod of the locking device according to the second embodiment. [Figure 12] It is a front view showing the non-operating state of the actuator of the locking device according to the second embodiment. [Figure 13] It is a front view showing the operating state of the actuator of the locking device according to the second embodiment. [Figure 14] In the comparative example, it is a front view corresponding to FIG. 13 showing a state where the stroke amount of the rod is insufficient due to the inclination of the rod. [Figure 15] It is a perspective view showing the frame and the locking device of the seat back of the vehicle seat according to the third embodiment. [Figure 16] It is a perspective view showing a part of the configuration shown in FIG. 15 as viewed from a direction different from that of FIG. 15. [Figure 17] It is an exploded perspective view showing the configuration around the locking device of the seat back in the vehicle seat according to the third embodiment. [Figure 18] It is a first perspective view showing a part of the locking device according to the third embodiment. [Figure 19] It is a second perspective view showing a part of the locking device according to the third embodiment. [Figure 20] It is a perspective view for explaining the displacement of the rod of the locking device according to the third embodiment. [Figure 21] It is a perspective view for explaining the displacement limitation of the rod of the locking device according to the third embodiment. [Figure 22] It is a perspective view showing the configuration around the locking device of the seat back in the vehicle seat according to the fourth embodiment. [Figure 23] It is a perspective view showing a part of the configuration shown in FIG. 22 as viewed from a direction different from that of FIG. 22. [Figure 24] It is an exploded perspective view showing the frame and the locking device of the seat back of the vehicle seat according to the fourth embodiment. [Figure 25] This is an exploded perspective view showing the frame and locking device of the seat back of a vehicle seat according to the fourth embodiment. [Figure 26] This is a first perspective view showing a part of the locking device according to the fourth embodiment. [Figure 27] This is a second perspective view showing a part of the locking device according to the fourth embodiment. [Figure 28] This is a perspective view illustrating the displacement of the rod of the locking device according to the fourth embodiment. [Modes for carrying out the invention]

[0020] <First Embodiment> Hereinafter, a vehicle seat 10 according to the first embodiment of the present invention will be described with reference to Figures 1 to 7. In each figure, some reference numerals may be omitted for the sake of clarity. The arrows FR, LH, RH, and UP, as indicated in each figure, indicate the front, left, right, and top of the vehicle seat 10, respectively. Hereafter, when simply referring to the front, back, left, right, up, and down directions, these directions will be in relation to the vehicle seat 10.

[0021] As shown in Figure 1, the vehicle seat 10 is a split-folding rear seat for three people, comprising a seat cushion 12 on which the occupants sit, a seat back 14 that supports the occupants' backs, and three headrests 16 that support the occupants' heads. The seat back 14 is divided into a right seat back 14R for two people and a left seat back 14L for one person. The right seat back 14R and the left seat back 14L are each rotatably connected to the floor of the vehicle body via hinge brackets (not shown), and can be folded forward onto the seat cushion 12.

[0022] The left and right seatbacks 14R and 14L are each provided with a locking device 50 (see Figures 2 to 5) for restraining the left and right seatbacks 14R and 14L to the side of the vehicle body (not shown) in the upright position (the position shown in Figure 1; hereinafter referred to as the "upright position"). Each locking device 50 corresponds to the "seatback locking device" in the present invention.

[0023] Each locking device 50 includes a locking body 52 provided on the left and right outer sides of the left and right seatbacks 14R and 14L, a strap 64 provided on the left and right outer shoulders S of the left and right seatbacks 14R and 14L, a rod 62 connecting the strap 64 and the locking body 52, and a rod guide 70 attached to the locking body 52. ​​The locking body 52 has a latch (not shown) that engages with a striker (not shown) provided on the side of the vehicle body. This engagement restricts the rotation of the left and right seatbacks 14R and 14L relative to the vehicle body and restrains them in the upright position.

[0024] Furthermore, since the configuration around the locking device 50 on the left and right seatbacks 14R and 14L is basically the same except for being symmetrical, the configuration of the right seatback 14R will be described below, and the description of the left seatback 14L will be omitted. Also, when describing the front, back, left, right, up, and down directions below, the directions will be those when the seatback 14R is in the upright position.

[0025] The right-side seatback 14R comprises a frame 18 (see Figure 2), which is a structural member; a pad 40 (see Figure 1), which is a cushioning material; and a trim cover 42 (see Figure 1), which is the surface material. The frame 18 is constructed in a frame-like shape by joining together, for example, metal pipes or press-formed metal plates.

[0026] This frame 18 has an upper frame portion 20 extending in the left-right direction at the upper end of the seat back 14R, a lower frame portion 22 extending in the left-right direction at the lower end of the seat back 14R, a right side frame portion 24 extending in the up-down direction at the right end of the seat back 14R, a left side frame portion 26 extending in the up-down direction at the left end of the seat back 14R, and an intermediate frame portion 28 extending in the up-down direction at the middle of the seat back 14R in the left-right direction.

[0027] The pad 40 is made of a foam material such as urethane foam and is attached to the frame 18. The pad 40 is rectangular when viewed from the front-to-rear direction of the seat back 14R and is a roughly rectangular plate with the front-to-rear direction of the seat back 14 as the thickness direction. The trim cover 42 is formed into a bag shape by sewing together multiple surface pieces made of, for example, cloth, leather, or synthetic leather, and is placed over the pad 40 from above.

[0028] As shown in Figures 2 and 3, an upper bracket 30 made of press-formed metal plate is fixed to the right end of the upper frame portion 20 of the frame 18, and a lock bracket 32 ​​made of press-formed metal plate is fixed to the upper part of the right side frame portion 24. The lock body 52 of the locking device 50 is fixed to this lock bracket 32.

[0029] As shown in Figures 3 to 5, the lock body 52 has a housing 54 fixed to the lock bracket 32. The housing 54 is made of a press-formed metal plate and is formed into a roughly box shape with its longitudinal direction in the vertical direction and flattened in the horizontal direction.

[0030] As shown in Figure 4, two bolt holes 56 are formed at the rear of the housing 54. Two bolts 58 (see Figures 3 and 5) are inserted through the two bolt holes 56. These bolts 58 are screwed into two weld nuts 34 fixed to the lock bracket 32. In this way, the housing 54, or the lock body 52, is fastened and fixed to the lock bracket 32, or the frame 18.

[0031] The housing 54 contains mechanical components such as a latch (not shown). These mechanical components include a release member 60 (see Figures 3 to 5). The release member 60 is located on the upper front side of the housing 54 and is displaceably mounted relative to the housing 54. When this release member 60 is operated upward on the seat, the engagement between the striker (not shown) located on the right side of the vehicle body and the latch is released. This release releases the restriction on the rotation of the seat back 14R, allowing the seat back 14R to be tilted forward onto the seat cushion 12.

[0032] A rod 62 is connected to the unlocking member 60. The rod 62 is made of a bent metal wire. As shown in Figure 3, the rod 62 is made up of a first longitudinal extension 62A extending upward from the unlocking member 60, a first transverse extension 62B extending to the left (inward in the sheet width direction) from the upper end of the first longitudinal extension 62A, a second longitudinal extension 62C extending upward from the left end of the first transverse extension 62B, a second transverse extension 62D extending to the left from the upper end of the second longitudinal extension 62C, and a third transverse extension 62E extending to the right from the left end of the second transverse extension 62D. The lower end of the strap 64 is connected to the second transverse extension 62D.

[0033] The strap 64 is made of a long, strip-shaped material, such as a synthetic fiber, and is flexible. The strap 64 is inserted vertically through a through hole 44 (see Figure 6) formed in the shoulder S of the seat back 14R. Although the trim cover 42 is not shown in Figure 6, the trim cover 42 also has a through hole. This strap 64 is inserted through an escutcheon 46 (see Figure 1) provided on the upper surface of the shoulder S of the seat back 14R and is pulled out to the outside of the seat back 14R (the upper side of the seat back 14R). The escutcheon 46 is formed in a frame shape, for example, from resin.

[0034] The lower end of the strap 64 is wrapped around the second transverse extension 62D of the rod 62, and the portions before and after the wrapping are sewn together. In this way, the lower end of the strap 64 is connected to the second transverse extension 62D of the rod 62, and the strap 64 and the lock release member 60 are connected via the rod 62. When the strap 64 is pulled upward by the occupant, the rod 62 is displaced from the non-operational position shown by the dashed line in Figure 5 to the operational position shown by the solid line in Figure 5. This displaces the lock release member 60 upward relative to the housing 54, and the engagement between the latch and the striker is released.

[0035] As shown in Figure 6, the second transverse extension 62D of the rod 62 contacts a portion 40A of the seat back 14R pad 40 from above, and the second longitudinal extension 62C of the rod 62 contacts the same portion 40A from the right. This configuration prevents the generation of abnormal noise due to rattling of the rod 62. The second longitudinal extension 62C of the rod 62 engages with (contacts or is in close proximity to) the rod guide 70 attached to the lock body 52.

[0036] The rod guide 70 is manufactured by resin injection molding and has a long, rectangular shape with its longitudinal side in the vertical direction. This rod guide 70 has a long, rectangular shape with its longitudinal side in the vertical direction and is composed of a fixed part 70A that is superimposed on the front of the housing 54 from the left side (inward side in the seat width direction), a protruding part 70B that protrudes to the left from the upper end of the fixed part 70A, an outer engaging part 70C that protrudes rearward from the rear end of the left end of the protruding part 70B, and a rear engaging part 70D that protrudes to the left from the rear end of the outer engaging part 70C.

[0037] As shown in Figure 4, the fixing portion 70A has two rivet holes 57, one above and one below, and the front part of the housing 54 has two rivet holes 72, one above and one below. Two rivets 74 are inserted through these rivet holes 57 and 72. By crimping these rivets 74, the fixing portion 70A, i.e., the rod guide 70, is fixed to the housing 54, i.e., the lock body 52.

[0038] As shown in Figures 3 and 5, the outer engaging portion 70C engages (contacts or is in close proximity to) the second longitudinal extension portion 62C of the rod 62 from the right side (outside in the sheet width direction). The rear engaging portion 70D engages (contacts or is in close proximity to) the second longitudinal extension portion 62C of the rod 62 from the rear side. As a result, the rod 62 is allowed to be displaced vertically (see arrow D in Figure 5), while displacement to the right (outside in the sheet width direction) (see arrow R in Figure 5) and to the rear is restricted.

[0039] In the vehicle seat 10 with the above configuration, the back of the occupant seated on the seat cushion 12 is supported by the seat back 14R. This seat back 14R is rotatably connected to the vehicle body. A locking body 52 of a locking device 50 is provided on the side of the seat back 14R. When this locking body 52 engages with a striker provided on the side of the vehicle body, the rotation of the seat back 14R is restricted. When the lock release member 60 of this locking body 52 is operated upward, the above engagement is released, and the restriction on the rotation of the seat back 14R is released.

[0040] A strap 64 is inserted vertically through a through hole 44 formed in the shoulder area S of the seat back 14R. This strap 64 and the lock release member 60 are connected by a rod 62. This rod 62 is in contact with a part 40A of the pad 40 of the seat back 14R. A rod guide 70 fixed to the lock body 52 is engaged with this rod 62. This rod guide 70 allows vertical displacement of the rod 62 and restricts displacement of the rod 62 to the right (outward in the seat width direction). This prevents the rod 62 from tilting in the seat width direction, and thus prevents the strap 64 from tilting in the seat width direction due to the tilt of the rod 62.

[0041] In particular, in this embodiment, as shown in Figure 7, the rod 62 contacts a part 40A of the pad 40 from the outside in the sheet width direction. However, the rod guide 70 can prevent the rod 62 from tilting outward in the sheet width direction, thus preventing the strap 64 from tilting inward in the sheet width direction due to the tilt of the rod 62. Furthermore, since the rod 62 can be prevented from tilting outward in the sheet width direction when the strap 64 is operated upward, it is possible to prevent the upward stroke amount of the rod 62 from becoming insufficient due to the tilt of the rod 62, which would prevent the lock body 52 from being released. Moreover, since the rod guide 70 is made of resin, for example, costs can be reduced.

[0042] Next, other embodiments of the present invention will be described. Note that components and operations that are essentially the same as those described in the previously described embodiments will be given the same reference numerals and their descriptions will be omitted.

[0043] <Second Embodiment> Figure 8 shows a perspective view of the surrounding configuration of a seat back locking device 80 in a vehicle seat according to a second embodiment of the present invention. This locking device 80 has an actuator 88 that displaces a rod 82 upward. The actuator 88 has an actuator body 90 fixed to the housing 54 of the lock body 52 using two rivets 74, one above and one below, and a movable part 92 attached to the upper part of the actuator body 90.

[0044] The actuator body 90 is configured to displace the movable part 92 upward by the driving force of a motor (not shown). As shown in Figures 8 and 9, the actuator body 90 has an opposing wall 90A that is spaced apart from the rear of the movable part 92.

[0045] Furthermore, in this locking device 80, the rod 82 has a rod body 62 made of a metal wire and a resin part 86 made of resin and attached to the rod body 62, as shown in Figures 8 and 10. The rod body 62 has the same configuration as the rod 62 in the first embodiment. The first lateral extension 62B of the rod body 62 is positioned between the movable part 92 of the actuator 88 and the opposing wall 90A.

[0046] The resin portion 86 of the rod 82 is attached to the rod body 62 by, for example, integral molding, and integrally includes a first fixing portion 86A fixed to the first transverse extension portion 62B of the rod body 62, a second fixing portion 86B fixed to the second longitudinal extension portion 62C of the rod body 62, and an engaging portion 86C that engages (contacts or is in close proximity to) the movable portion 92 of the actuator 88 and the opposing wall 90A from the left side (inward in the seat width direction).

[0047] As described above, the engagement portion 86C of the resin portion 86 engages with the movable portion 92 and the opposing wall 90A of the actuator 88, thereby allowing the rod 82 to be displaced vertically (see arrow D in Figure 11), while restricting displacement to the right (outward in the sheet width direction) (see arrow R in Figure 11).

[0048] In this second embodiment, the configuration other than that described above is the same as in the first embodiment. Therefore, many parts can be shared between the first embodiment, which does not have an actuator 88, and the second embodiment, which has an actuator 88. In addition, in this second embodiment as well, the tilting of the rod body 62 in the seat width direction is suppressed by contact with a part 40A of the pad 40, so that the tilting of the rod body 62 prevents the strap 64 (not shown in Figure 11) from tilting in the seat width direction.

[0049] Moreover, in this second embodiment, the actuator 88 that displaces the rod 82 in the vertical direction also serves as a rod guide, thus reducing costs compared to the case where a dedicated rod guide 70 is provided as in the first embodiment. Furthermore, in this second embodiment, when the movable part 92 of the actuator 88 is displaced from the non-operating position shown in Figure 12 to the operating position shown in Figure 13, the engagement between the movable part 92 and the resin part 86 can suppress the tilting of the rod body 62.

[0050] In other words, as shown in the comparative example in Figure 14, if the rod 82 does not have a resin part 86, the rod body 62 tilts outward in the seat width direction when the movable part 92 is displaced to the operating position. As a result, the upward stroke amount of the rod body 62 becomes insufficient, and the lock body 52 does not become unlocked, but this can be avoided in this embodiment.

[0051] <Third Embodiment> Figure 15 shows a perspective view of the surrounding configuration of the seat back locking device 100 in a vehicle seat according to the third embodiment of the present invention. This locking device 100 has a rod 82 similar to the rod 82 in the second embodiment. The resin portion 86 of this rod 82 engages with (contacts or is in close proximity to) a rod guide 102 fixed to the lock body 52.

[0052] The rod guide 102 is made of a press-formed metal plate. As shown in Figures 15 to 19, the rod guide 102 has a fixing portion 102A that is superimposed on the upper front end of the housing 54 of the lock body 52 from the left side, an inner extension portion 102B that extends diagonally to the left and upward from the rear end of the fixing portion 102A, and a front extension portion 102C that extends forward from the left end of the inner extension portion 102B.

[0053] As shown in Figure 17, a rivet hole 104 is formed in the fixing portion 102A. The fixing portion 102A, i.e., the rod guide 102, is fixed to the housing 54, i.e., the lock body 52, by fastening a rivet 74 that is inserted through this rivet hole 104 and a rivet hole 72 formed in the upper end of the housing 54.

[0054] Rotation-stopping portions 102D and 102E extend to the right from the front end of the fixed portion 102A and the middle portion of the inward extension portion 102B. Rotation-stopping portion 102D is in contact with the front end of the housing 54, and rotation-stopping portion 102E is in contact with the upper end of the housing 54. This prevents the rod guide 102 from rotating around the rivet 74.

[0055] A slit 106 is formed in the front extension 102C, cut from the upper end to the lower end. The first transverse extension 62B of the rod body 62 is inserted into this slit 106. The resin portion 86 of the rod 82 engages (contacts or is in close proximity to) with respect to the front extension 102C from the left side. As a result, the rod 82 is allowed to be displaced vertically (see arrow D in Figure 20), while its displacement to the right (outward in the sheet width direction) is restricted (see arrow R in Figure 21).

[0056] In this third embodiment, the configuration other than that described above is the same as in the first embodiment. In this third embodiment as well, the tilting of the rod body 62 in the seat width direction is suppressed by contact with a part 40A of the pad 40, so that the tilting of the rod body 62 prevents the strap 64 from tilting in the seat width direction. Furthermore, although this third embodiment does not have an actuator 88, it can share many parts with the second embodiment, which has an actuator 88.

[0057] Moreover, in this third embodiment, since the rod guide 102 is made of a metal plate, durability can be easily ensured and weight can be reduced compared to the case where the rod guide 70 is made of resin as in the first embodiment. Furthermore, in this third embodiment, since the resin part 86 of the rod 82 is engaged with the metal rod guide 102, the generation of abnormal noise due to metal-to-metal contact can be prevented. In addition, in this third embodiment, since the fixing part 102A of the rod guide 102 is fixed to the lock body 52 with a single rivet 74, costs can be reduced.

[0058] <Fourth Embodiment> Figure 22 shows a perspective view of the surrounding configuration of the seat back locking device 110 in a vehicle seat according to the fourth embodiment of the present invention. This locking device 110 has a rod 62 similar to the rod 62 in the first embodiment. This rod 62 engages with (contacts or is in close proximity to) a rod guide 112 fixed to the lock body 52.

[0059] The rod guide 112 is made of a press-formed metal plate. As shown in Figures 22 to 26, the rod guide 112 has a fixing portion 112A that is superimposed on the upper front end of the housing 54 of the lock body 52 from the left side, an inner extension portion 112B that extends to the left and upward from the rear end of the fixing portion 112A, and a front extension portion 112C that extends forward from the upper left end of the inner extension portion 112B.

[0060] As shown in Figure 24, a rivet hole 114 is formed in the fixing portion 112A. The fixing portion 112A, i.e., the rod guide 112, is fixed to the housing 54, i.e., the lock body 52, by fastening a rivet 74 that is inserted through this rivet hole 114 and a rivet hole 72 formed in the upper end of the housing 54.

[0061] Rotation-stopping portions 112D and 112E extend to the right from the front end of the fixed portion 112A and the middle portion of the inward extension portion 112B. Rotation-stopping portion 112D is in contact with the front end of the housing 54, and rotation-stopping portion 112E is in contact with the upper end of the housing 54. This prevents the rod guide 112 from rotating around the rivet 74.

[0062] The first longitudinal extension 62C of the rod 62 engages (contacts or is in close proximity to) the front extension 112C from the left side. As a result, the rod 62 is allowed to be displaced vertically (see arrow D in Figure 27), while its displacement to the right (outward in the sheet width direction) is restricted (see arrow R in Figure 28).

[0063] In this fourth embodiment, the configuration other than that described above is the same as in the first embodiment. In this fourth embodiment as well, the tilting of the rod 62 in the seat width direction is suppressed by contact with a part 40A of the pad 40, so that the tilting of the rod 62 can be suppressed from causing the strap 64 to tilt in the seat width direction. Furthermore, although this fourth embodiment does not have an actuator 88, it can share many parts with the second embodiment, which has an actuator 88.

[0064] Furthermore, in this fourth embodiment, since the rod guide 112 is made of a metal plate, durability can be easily ensured and weight can be reduced compared to the case where the rod guide 70 is made of resin as in the first embodiment. In addition, in this fourth embodiment, the fixing part 112A of the rod guide 112 is fixed to the lock body 52 with a single rivet 74, so costs can be reduced.

[0065] Although the present invention has been described above with reference to several embodiments, the present invention can be implemented with various modifications without departing from its spirit. Furthermore, it goes without saying that the scope of the present invention is not limited to the above-described embodiments. [Explanation of Symbols]

[0066] 10 Vehicle seats 12 seat cushions 14 Seatback 18 frames 40 pads Part of the 40A pad 44 Through holes 50 Locking device 52 Lock body 60. Lock release member 62 Rod (Rod body) 64 straps 70 Rod Guides 80 Locking device 82 rods 86 Resin part 88 Actuators 100 Locking device 102 Rod Guides 110 Locking device 112 Rod Guides

Claims

1. A lock body is provided on the side of the seat back which is rotatably connected to the vehicle body, and has a lock release member that engages with a striker provided on the side of the vehicle body and releases the engagement when operated upward on the seat, A strap is inserted through a through-hole formed in the shoulder area of ​​the seat back, along the vertical direction of the seat, A rod connecting the aforementioned unlocking member and the aforementioned strap, A rod guide is fixed to the lock body and engages with the rod, allowing displacement of the rod in the vertical direction of the seat and limiting displacement of the rod in the width direction of the seat. A seatback locking device equipped with [a specific feature].

2. The seat back locking device according to claim 1, wherein the rod guide is made of resin.

3. The seat back locking device according to claim 1, wherein the rod guide is made of a metal plate.

4. The seat back locking device according to claim 1, wherein the rod guide is an actuator that displaces the rod upwards on the seat.

5. The aforementioned rod is The rod body is made of metal wire, A resin part made of resin, attached to the rod body, and engaging with the rod guide, A seat back locking device according to claim 3 or claim 4, having the following:

6. The seat cushion on which the vehicle's occupants sit, A seat back is rotatably connected to the vehicle body and supports the back of the occupant, A seat back locking device according to any one of claims 1 to 4, wherein the locking body is provided on the side of the seat back, and the strap is inserted through a through hole formed in the shoulder of the seat back, A vehicle seat equipped with [a specific feature / feature].

Images