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, and which has a lock release member 60 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 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 whose extension portion 76 extending from a fixing portion 72 fixed to the lock body 52 engages with the rod 62, allowing displacement of the rod 62 in the vertical direction of the seat and limiting 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 portion of the seat back and protrudes upward from the shoulder portion 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] A seat back locking device according to the first embodiment includes a lock body provided on the side of the seat back of a vehicle seat, which engages with a striker provided on the side of the vehicle body and has a release member that releases the engagement when operated upward on the seat; 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; a fixing part fixed to the lock body; and an extension part that extends inward in the seat width direction from the fixing part on the front side of the seat from the lock body and is bent upward on the seat, the extension part bending backward on the seat on the upper side of the seat from the lock body and engaging with the rod, allowing displacement of the rod in the vertical direction of the seat and limiting displacement of the rod in the seat width direction.

[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 engages with this rod.

[0008] The rod guide has a fixed portion that is fixed to the lock body, and an extended portion that extends inward in the seat width direction from the fixed portion on the front side of the seat and is bent upward on the seat. The extended portion is bent backward on the seat on the upper side of the seat and engages with the rod, allowing the rod to be displaced vertically on the seat while limiting the rod's displacement in the seat width direction. This prevents the rod from tilting in the seat width direction, and thus prevents the strap from tilting in the seat width direction due to the rod's tilt.

[0009] The seat back locking device of the second embodiment includes an actuator fixed to the locking body and displacing the rod upward on the seat, wherein the extension of the rod guide extends inward in the seat width direction from the fixed portion on the front side of the seat relative to the actuator and is bent towards the rear side of the seat on the upper side of the seat relative to the actuator.

[0010] In the second embodiment of the seat back locking device, a rod is displaced upward on the seat by an actuator fixed to the locking body. The extension of the rod guide that engages with this rod extends inward in the seat width direction from the fixed part on the front side of the seat relative to the actuator, and bends towards the rear side of the seat on the upper side of the seat relative to the actuator. Because of this configuration, the rod guide can be shared between specifications with and without an actuator.

[0011] In the third embodiment of the seat back locking device, in the first or second embodiment, the extension of the rod guide is made of a bent metal wire, and the extension contacts the rod at two points when the strap is operated upward on the seat.

[0012] In the third embodiment of the seat back locking device, when the strap is pulled upwards on the seat, the extended portion of the rod guide, which is made of bent metal wire, contacts the rod at two points. As a result, when the strap is pulled strongly, the rod is supported at two points by the rod guide, making it easier to prevent deformation of the rod.

[0013] A vehicle seat of the fourth 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 third 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.

[0014] In the fourth embodiment of the vehicle seat, the back of the occupant seated on the seat cushion is supported by a seat back. This seat back is rotatably connected to the vehicle body. A locking body for a seat back locking device is provided on the side of the seat back, and a strap for this locking device is inserted through a through hole formed in the shoulder of the seat back. Since this locking device is of any one of the first to third embodiments, the aforementioned effects are obtained. [Effects of the Invention]

[0015] As described above, the seat back locking device and vehicle seat according to the present invention can prevent the strap that releases the rotation restriction of the seat back from tilting in the seat width direction. [Brief explanation of the drawing]

[0016] [Figure 1] This is a perspective view showing a vehicle seat according to the first embodiment. [Figure 2] This is a perspective view showing the frame and locking device of the seat back of a vehicle seat according to the first embodiment. [Figure 3] Figure 2 is a perspective view showing a magnified portion of the configuration. [Figure 4] This is a perspective view showing the main parts of the locking device according to the first embodiment. [Figure 5] Figure 3 is an exploded perspective view showing a portion of the configuration in a disassembled state. [Figure 6] This is a perspective view illustrating the displacement of the rod of the locking device according to the first embodiment. [Figure 7] This is a perspective view illustrating the displacement restriction of the rod of the locking device according to the first embodiment. [Figure 8] This is a plan cross-sectional view showing the configuration of peripheral members, including a part of the locking device according to the first embodiment. [Figure 9] This is a side cross-sectional view showing the configuration of peripheral members, including a part of the locking device according to the first embodiment. [Figure 10] It is a front view showing the configuration of a peripheral member including a part of the locking device according to the first embodiment. [Figure 11] It is a cross-sectional view for explaining the engagement between the pad and the rod of the seat back in the comparative example. [Figure 12] It is a cross-sectional view showing a state in which the strap is tilted by the engagement between the pad and the rod of the seat back in the comparative example. [Figure 13] It is a perspective view showing the configuration around the locking device of the seat back in the vehicle seat according to the second embodiment. [Figure 14] It is a perspective view showing the main part of the locking device according to the second embodiment. [Figure 15] It is an exploded perspective view showing a state in which a part of the configuration shown in FIG. 13 is disassembled. [Figure 16] It is a perspective view for explaining the displacement of the rod of the locking device according to the second embodiment. [Figure 17] It is a perspective view for explaining the displacement limitation of the rod of the locking device according to the second embodiment. [Figure 18] It is a front view showing the non-operating state of the actuator of the locking device according to the comparative example. [Figure 19] It is a front view showing the operating state of the actuator of the locking device according to the comparative example, and showing a state in which the stroke amount of the rod is insufficient due to the inclination of the rod.

Mode for Carrying Out the Invention

[0017] <First Embodiment> Hereinafter, the vehicle seat 10 according to the first embodiment of the present invention will be described with reference to FIGS. 1 to 10. In each figure, some reference numerals may be omitted for the sake of easy viewing of the drawing. Also, the arrows FR, LH, RH, and UP appropriately shown in each figure indicate the front, left, right, and upper directions of the vehicle seat 10, respectively. Hereinafter, when simply explaining using the front-rear, left-right, and up-down directions, it shall indicate the direction with respect to the vehicle seat 10.

[0018] 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.

[0019] The left and right seatbacks 14R and 14L are each provided with a locking device 50 (see Figures 2 to 6) 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.

[0020] Each locking device 50 consists of 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 into which the rod 62 engages. The locking body 52 has a latch 53 (see Figure 4) 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.

[0021] 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.

[0022] 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.

[0023] As shown in Figure 2, the frame 18 includes 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.

[0024] 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.

[0025] 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.

[0026] As shown in Figures 3 to 11, 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-like shape with its longitudinal direction in the vertical direction and flattened in the horizontal direction.

[0027] As shown in Figure 5, two bolt holes 56 are formed at the rear of the housing 54, one above the other. Two bolts 58 are inserted through the two bolt holes 56. These bolts 58 are screwed into two weld nuts 34, one above the other, which are 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.

[0028] The housing 54 houses mechanical components such as a latch 53. These mechanical components include a release member 60 (see Figures 5 and 8). 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 the release member 60 is operated upward, the engagement between the latch 53 and a striker (not shown) located on the right side of the vehicle body 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.

[0029] A rod 62 is connected to the unlocking member 60. The rod 62 is made of a bent metal wire. As shown in Figures 3 to 5, 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.

[0030] 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 11) formed in the shoulder S of the seat back 14R. Although the trim cover 42 is not shown in Figure 11, the trim cover 42 also has a through hole. The 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.

[0031] 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 Figures 6 and 10 to the operational position shown by the solid line in Figures 6 and 10. As a result, the lock release member 60 is displaced upward relative to the housing 54, and the engagement between the latch 53 and the striker is released.

[0032] As shown in Figure 11, 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 (in this case, makes point contact) with the rod guide 70 attached to the lock body 52.

[0033] As shown in Figures 3 to 7, the rod guide 70 has a fixing portion 72 fixed to the lock body 52 and an extension portion 78 extending from the fixing portion 72. The fixing portion 72 is made of a press-formed metal plate and has a long shape with its length in the vertical direction. A slit 55 (see Figure 5) extending in the vertical direction is formed at the front end of the housing 54 of the lock body 52, and the fixing portion 72 is inserted into this slit 55. The fixing portion 72 is superimposed on the inner wall portion 54A in the seat width direction of the housing 54 from the right side (outer side in the seat width direction).

[0034] As shown in Figure 5, rivet holes 74 are formed at both the upper and lower ends of the fixing portion 72, and rivet holes 57 are formed at both the upper and lower ends of the front part of the housing 54. Rivets 76 (see Figures 3, 4, and 6; not shown in Figure 5) are inserted through these rivet holes 74 and 57, respectively. By crimping these rivets 76, the fixing portion 72, i.e., the rod guide 70, is fixed to the housing 54, i.e., the lock body 52.

[0035] The extension portion 78 is made of a bent metal wire. This extension portion 78 extends to the left (inward in the seat width direction) from the fixing portion 72 in front of the lock body 52, and is bent upward in front of the right side frame 24, and is bent diagonally to the rear above the lock body 52.

[0036] As shown in Figures 3 and 4, the extension portion 78 is composed of an upper lateral extension portion 78A extending to the left from the upper part of the fixed portion 72, an outer longitudinal extension portion 78B extending upward from the left end of the upper lateral extension portion 78A, an outer oblique extension portion 78C extending diagonally to the rear and upward from the upper end of the outer longitudinal extension portion 78B, an outer oblique extension portion 78D curved in an arc from the rear end of the outer longitudinal extension portion 78C to the left and forward, an inner oblique extension portion 78E extending diagonally to the front and downward from the left end of the bent portion 78D, an inner longitudinal extension portion 78F extending downward from the front end of the inner oblique extension portion 78E, and a lower lateral extension portion 78G extending to the right from the lower end of the inner longitudinal extension portion 78F to reach the fixed portion 72.

[0037] The upper transverse extension 78A is positioned above the lower transverse extension 78G at a distance from it, the outer longitudinal extension 78B is positioned to the right of the inner longitudinal extension 78F at a distance from it, and the outer oblique extension 78C is positioned to the right of the inner oblique extension 78E at a distance from it. The right ends of the upper transverse extension 78A and the lower transverse extension 78G are fitted into through holes (not shown) formed in the fixing part 72 and are fixed to the fixing part 72 by means of welding or other means.

[0038] The inner oblique extension 78E engages (in this case, makes point contact with) the second longitudinal extension 62C of the rod 62 from the right side (outside in the sheet width direction). As a result, the rod 62 is allowed to be displaced vertically (see arrow D in Figure 6), while displacement to the right (outside in the sheet width direction) (see arrow R in Figure 7) and rearward is restricted.

[0039] As shown in Figures 8 and 9, when the rod 62 moves between the non-operational position (indicated by a solid line in Figure 9) and the operating position (indicated by a dashed line in Figure 9), the second longitudinal extension 62D of the rod 62 is configured to make point contact with the same location P on the inner oblique extension 78E.

[0040] As shown in Figure 10, when the strap 64 is operated upward (see arrow U in Figure 10), and the rod 62 is displaced from the non-operated position (indicated by the dashed line in Figure 10) to the operated position (indicated by the solid line in Figure 10), the first transverse extension 62B of the rod 62 comes into contact (point contact in this case) with the outer oblique extension 78C and the inner oblique extension 78E of the rod guide 70. In other words, when the strap 64 is operated as described above, the extension 78 of the rod guide 70 is configured to make contact with the rod 62 at two points spaced apart in the left-right direction.

[0041] 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.

[0042] A strap 64 is inserted through a through hole 44 formed in the shoulder area S of the seat back 14R, running vertically. This strap 64 and the unlocking member 60 are connected by a rod 62. This rod 62 is in contact with a portion 40A of the pad 40 of the seat back 14R. A rod guide 70 is engaged with this rod 62.

[0043] The rod guide 70 has a fixing portion 72 fixed to the lock body 52, and an extension portion 78 that extends from the fixing portion 72 forward of the lock body 52 to the left (inward in the seat width direction) and is bent upward. The extension portion 78 is bent backward above the lock body 52 and engages with the rod 62, allowing vertical displacement of the rod 62 while restricting outward displacement of the rod 62 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.

[0044] In particular, in this embodiment, the rod 62 is in contact with a portion 40A of the pad 40 from the outside in the sheet width direction, but the rod guide 70 can prevent the rod 62 from tilting outward in the sheet width direction. In contrast, in a configuration without a rod guide 70, as shown in the comparative example in Figure 12, the rod 62 tilts outward in the sheet width direction due to contact with a portion 40A of the pad 40, and this tilt of the rod 62 causes the strap 64 to tilt inward in the sheet width direction, but this can be avoided in this embodiment.

[0045] Furthermore, in this embodiment, when the strap 64 is operated upward, the rod 62 is prevented from tilting outward in the seat width direction. This prevents 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, in this embodiment, the lock body 52 to which the rod guide 70 is fixed can be assembled to the frame 18 of the seat back 14R as a lock unit, making the assembly work easier.

[0046] Furthermore, in this embodiment, when the strap 64 is pulled upward and the rod 62 is displaced upward, the extended portion 78 of the rod guide 70, which is made of bent metal wire, contacts the first transverse extension 62B of the rod 62 at two points. As a result, when the strap 64 is pulled strongly, the rod 62 is supported at two points by the rod guide 70, making it easier to prevent deformation of the rod 62. Moreover, since the rod guide 70 also functions as a stopper that limits the maximum amount of tension of the strap 64, the configuration can be simplified compared to the case where a separate stopper is provided in addition to the rod guide 70.

[0047] Furthermore, in this embodiment, since the second longitudinal portion 62C of the rod 62 is in point contact with the rod guide 70, the resistance when stroking the rod 62 from the non-operating position to the operating position is small. This reduces the influence on the operating load of the strap 64. Moreover, since the metal rod 62 is in contact with the metal rod guide 70, it is easier to prevent deterioration over time compared to, for example, the case where the rod guide is made of resin.

[0048] 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.

[0049] <Second Embodiment> Figure 13 shows a perspective view of the surrounding components of the seat back locking device 80 in a vehicle seat according to a second embodiment of the present invention, Figure 14 shows a perspective view of the locking device 80, and Figure 15 shows an exploded perspective view of the surrounding components of the locking device 80. This locking device 80 has an actuator 88 that displaces the rod 62 upward. The actuator 88 has an actuator body 90 fixed to the housing 54 of the lock body 52 using two rivets 76, one above and one below, and a movable part 92 attached to the upper part of the actuator body 90. The rivets 76 that fix the actuator body 90 to the housing 54 are longer than the rivets 76 in the first embodiment.

[0050] The actuator body 90 is configured to displace the movable part 92 vertically by the driving force of a motor (not shown). The actuator body 90 has an opposing wall 90A that is spaced apart from the rear of the movable part 92. The first lateral extension 62B of the rod 62 is positioned between the movable part 92 and the opposing wall 90A. When the movable part 92 is displaced upward by the driving force of the actuator body 90, the rod 62 is pushed up to the operating position by the movable part 92, and the lock of the lock body 52 (i.e., the restriction of rotation of the seat back 14R) is released.

[0051] The second longitudinal extension 62C of the rod 62 engages (in this case, makes point contact with) the extension 78 of the rod guide 70 from the left side, similar to the first embodiment. As a result, the rod 62 is allowed to be displaced vertically (see arrow D in Figure 16), while displacement to the right (outward in the sheet width direction) (see arrow R in Figure 17) and rearward is restricted.

[0052] In this second embodiment, the configuration other than that described above is the same as in the first embodiment. Therefore, the first embodiment, which does not have an actuator 88, and the second embodiment, which has an actuator 88, differ only in the length of the rivet 76, and many other parts can be shared. In addition, in this second embodiment as well, the tilting of the rod 62 outward in the seat width direction is suppressed, so the tilting of the strap 64 in the seat width direction due to the tilting of the rod 62 can be suppressed.

[0053] Furthermore, in this second embodiment, since the tilting of the rod 62 in the seat width direction is suppressed as described above, it is possible to prevent insufficient upward stroke of the rod 62 when the actuator 88 is operated. In other words, in a configuration without a rod guide 70, as shown in the comparative example in Figure 18, the rod 62 may tilt outward in the seat width direction when the actuator 88 is operated, as shown in Figure 19. As a result, the upward stroke of the rod 62 becomes insufficient, and the lock body 52 cannot be released, but this can be avoided in this embodiment.

[0054] Although the present invention has been described above with reference to two 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 embodiments. [Explanation of symbols]

[0055] 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 rods 64 straps 70 Rod Guides 72 Fixed part 74 Extension part 80 Locking device 88 Actuators

Claims

1. A lock body having a lock release member that is provided on the side of the seat back of a vehicle seat, engages with a striker provided on the side of the vehicle body, and releases the engagement when operated upwards 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 having a fixing portion fixed to the lock body, and an extension portion that extends inward in the seat width direction from the fixing portion on the front side of the seat from the lock body and is bent upward on the seat, the extension portion bending backward on the seat on the upper side of the seat from the lock body and engaging with the rod, allowing displacement of the rod in the vertical direction of the seat and limiting displacement of the rod in the seat width direction, A seatback locking device equipped with [a specific feature].

2. The lock body is fixed to an actuator that displaces the rod upwards on the seat, The seat back locking device according to claim 1, wherein the extension of the rod guide extends inward in the seat width direction from the fixing portion on the front side of the seat compared to the actuator, and is bent towards the rear side of the seat on the upper side of the seat compared to the actuator.

3. The seat back locking device according to claim 1 or claim 2, wherein the extension portion of the rod guide is made of a bent metal wire, and the extension portion contacts the rod at two points when the strap is operated upward on the seat.

4. 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 claim 1 or claim 2, 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