JP7114334B2 - Anchor device for seat belt - Google Patents

Description

TECHNICAL FIELD The present invention relates to a seat belt anchor device fixed to a stud provided on a vehicle body.

In a vehicle, the ends of the seat belt are sometimes coupled to the vehicle body via a seat belt anchoring device. For example, Patent Literature 1 discloses a seat belt anchor device 110 as shown in FIGS. 12 and 13 .

Specifically, the vehicle body is provided with a stud 100 having a large-diameter head portion 101 and a small-diameter shaft portion 102 . A seat belt anchor device 110 is fixed to the stud 100 and includes an anchor plate 120 and a stopper 130 made of a leaf spring. Stopper 130 is attached to anchor plate 120 by rivet 140 .

The anchor plate 120 has a first opening 121 for fixing a loop (not shown) formed at one end of the webbing of the seat belt, and a second keyhole-shaped opening 122 . The second opening 122 has a circular enlarged area 123 into which the head 101 of the stud 100 can be inserted, and a locking area 124 extending from the enlarged area 123 in the direction opposite to the first opening 121 . The locking region 124 is a slit-shaped region into which the head portion 101 of the stud 100 cannot enter from the enlarged region 123 but into which the shaft portion 102 can enter.

The stopper 130 extends in the extending direction of the lock area 124 so as to cover the second opening 122 . The stopper 130 has a locking piece 131 substantially in the center and a pressing piece 132 at the lower end. The locking piece 131 is configured so that the anchor plate 120 moves from the second opening 122 to the first opening 121 while the head 101 of the stud 100 is inserted into the enlarged area 123 of the second opening 122 so that the head 101 passes through the enlarged area 123 of the second opening 122 . When the shaft portion 102 of the stud 100 enters the lock region 124 from the enlarged region 123 and is positioned at the end of the lock region 124, the head 101 is allowed to pass therethrough. Blocks returning to expansion area 123 . The pressing piece 132 presses the head 101 against the anchor plate 120 when the shaft 102 is positioned at the end of the locking region 124 . This prevents the anchor plate 120 from vibrating with respect to the stud 100 and generating abnormal noise.

U.S. Pat. No. 7,540,536

As described above, in the anchor device 110 shown in FIGS. 12 and 13 , the anchor plate is positioned such that the shaft portion 102 enters the locking region 124 from the enlarged region 123 while the head portion 101 of the stud 100 is inserted into the enlarged region 123 . When moving 120 , it is necessary to push locking piece 131 away from anchor plate 120 in order for head 101 of stud 100 to pass through locking piece 131 . Therefore, it is difficult to fix anchor device 110 to stud 100 .

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a seat belt anchor device that can be easily fixed to a stud.

In order to solve the above problems, a seat belt anchor device according to one aspect of the present invention is a seat fixed to a stud provided on a vehicle body and having a shaft portion and a head portion larger in diameter than the shaft portion. In the belt anchor device, a first opening for fixing a loop formed at one end of a webbing of a seat belt is formed, and an enlarged area into which the head of the stud can be inserted; an anchor plate having a second opening extending in the opposite direction to the opening and having a locking area into which the head of the stud cannot enter from the enlarged area and into which the shaft can enter; and a stopper attached to the anchor plate. and preventing passage of the head when the anchor plate is moved in a direction from the second opening toward the first opening with the head of the stud inserted into the enlarged region of the second opening. a locking piece that allows and prevents the head from returning to the enlarged area when the shank of the stud enters the locked area; and a locking piece that allows the shank to enter the locked area from the enlarged area. and a guide piece that guides the head at times, and the guide piece is located within the enlarged area and is inclined from the lock area toward the enlarged area so as to approach the vehicle body. characterized in that

According to the above configuration, since the stopper includes the guide piece, the shaft portion of the stud is prevented from passing through the enlarged area of the second opening while the head portion of the stud remains within the enlarged area. When the anchor plate is moved into the locking area, the head of the stud is guided by the guide piece and automatically moves in the axial direction of the stud. Therefore, the anchor device can be easily fixed to the stud.

The guide piece is provided at a position facing the locking piece in the thickness direction of the anchor plate, and when the shaft portion enters from the enlarged region to the locking region, the head portion is engaged with the locking region. The head may be guided to push the stop piece up away from the anchor plate. In this configuration, the head of the stud guided by the guide piece pushes up the locking piece in the direction away from the anchor plate, so the operator does not need to apply much force to the anchor plate in the thickness direction orthogonal to the moving direction. . Therefore, the anchoring device can be more easily fixed to the stud.

The stopper is an urging piece interposed between the head and the anchor plate to urge the head in a direction away from the anchor plate when the shaft enters the locking area from the enlarged area. may include According to this configuration, when the anchor device is fixed to the stud, the anchor plate is pressed against the vehicle body by the biasing force of the biasing piece of the stopper. Therefore, it is possible to prevent the anchor plate from vibrating with respect to the stud and generating abnormal noise. Moreover, since the urging piece is interposed between the head of the stud and the anchor plate, the head of the stud prevents the feet of the vehicle occupant and luggage from directly hitting the urging piece. That is, the head of the stud serves to protect the urging piece of the stopper. Therefore, the durability of the noise prevention function of the stopper can be improved.

For example, when the direction from the first opening to the second opening is defined as the first direction, and the direction from the second opening to the first opening is defined as the second direction, the biasing piece is attached to the anchor plate. The guide piece extends from the contact position in the first direction while being lifted from the anchor plate, and the guide piece extends from the end of the biasing piece in the first direction so as to be parallel to the biasing piece. It may extend in any direction.

Alternatively, when the direction from the first opening to the second opening is defined as the first direction, and the direction from the second opening to the first opening is defined as the second direction, the biasing piece is attached to the anchor plate. It may extend in the second direction from the contact position while being lifted from the anchor plate, and the guide piece may extend in the second direction from the end of the biasing piece in the second direction. According to this configuration, since the urging piece and the guide piece are continuous, the shape of the stopper can be simplified compared to the case where the urging piece and the guide piece are arranged in parallel as described above.

For example, the stopper includes a first plate-shaped portion that contacts the anchor plate, a second plate-shaped portion that faces the first plate-shaped portion with a gap therebetween, and the first plate-shaped portion and the second plate. The first opening of the shaped portion and a folded portion connecting opposite ends to each other, the locking piece is provided on the second plate-shaped portion, and the biasing piece and the guiding piece It may be provided on the first plate-shaped portion.

A seat belt anchor device according to another aspect of the present invention is a seat belt anchor device fixed to a stud provided on a vehicle body and having a shaft portion and a head portion larger in diameter than the shaft portion. a first opening for fixing a loop formed at one end of the webbing of the seat belt; an anchor plate formed with a second opening having a locking region into which the head portion of the stud cannot enter from the enlarged region but into which the shaft portion can enter; and a stopper attached to the anchor plate, the stopper comprising: When the anchor plate is moved in a direction from the second opening toward the first opening with the head inserted into the enlarged region of the second opening, the head is allowed to pass through and the stud is moved. and a stopper including a locking piece that prevents the head from returning to the enlarged region when the shaft of the head enters the locking region, and the anchor plate includes the Guide surfaces are provided to guide the head portion when the shaft portion enters the lock area from the enlarged area, and these guide surfaces are arranged so as to approach the vehicle body from the lock area toward the enlarged area. characterized in that it inclines to

According to the above configuration, since the anchor plate is provided with the guide surface, the shaft portion of the stud is expanded while the head of the stud is kept within the expanded region without passing through the expanded region of the opening. When the anchor plate is moved from the area into the locking area, the head of the stud is guided by the guide surface and automatically moves in the axial direction of the stud. Therefore, the anchor device can be easily fixed to the stud.

The stopper is an urging piece interposed between the head and the anchor plate to urge the head in a direction away from the anchor plate when the shaft enters the locking area from the enlarged area. may include According to this configuration, when the anchor device is fixed to the stud, the anchor plate is pressed against the vehicle body by the biasing force of the biasing piece of the stopper. Therefore, it is possible to prevent the anchor plate from vibrating with respect to the stud and generating abnormal noise. Moreover, since the urging piece is interposed between the head of the stud and the anchor plate, the head of the stud prevents the feet of the vehicle occupant and luggage from directly hitting the urging piece. That is, the head of the stud serves to protect the urging piece of the stopper. Therefore, the durability of the noise prevention function of the stopper can be improved.

ADVANTAGE OF THE INVENTION According to this invention, an anchor device can be easily fixed to a stud.

1 is a perspective view of a seat belt anchor device according to a first embodiment of the present invention; FIG. It is the exploded perspective view which looked at the anchor device shown in FIG. 1 from the front side. It is the exploded perspective view which looked at the anchor device shown in FIG. 1 from the back side. (a) and (b) are a cross-sectional view and a longitudinal cross-sectional view, respectively, of the anchor device shown in FIG. 1 ((a) is a cross-sectional view taken along line AA of (b)). (a) and (b) are a cross-sectional view and a longitudinal cross-sectional view, respectively, of the anchor device shown in FIG. sectional view). (a) and (b) are a transverse cross-sectional view and a longitudinal cross-sectional view, respectively, of the anchor device shown in FIG. sectional view). (a) and (b) are a cross-sectional view and a longitudinal cross-sectional view, respectively, of the state after the anchor device shown in FIG. sectional view). It is a perspective view of a stopper of a modification. FIG. 7 is an exploded perspective view of a seatbelt anchor device according to a second embodiment of the present invention, viewed from the front side; FIG. 10 is an exploded perspective view of the anchor device shown in FIG. 9 as seen from the back side; (a) and (b) are a cross-sectional view and a longitudinal cross-sectional view, respectively, of the anchor device shown in FIG. 9 ((a) is a cross-sectional view taken along line AA of (b)). 1 is a perspective view of a conventional seat belt anchor device; FIG. Fig. 13 is a cross-sectional view of the anchor device shown in Fig. 12 fixed to a stud;

(First embodiment)
1 to 4(b) show a seat belt anchor device 1A according to a first embodiment of the present invention. This anchor device 1A is fixed to a stud 6 provided on a vehicle body 7, as shown in FIGS. 7(a) and 7(b).

The stud 6 has a shaft portion 62 , a head portion 61 having a diameter larger than that of the shaft portion 62 , and a screw portion 63 having a diameter smaller than that of the shaft portion 62 . The head portion 61, the shaft portion 62 and the screw portion 63 are arranged in this order. A spacer 64 that makes surface contact with the vehicle body 7 is fixed to the stepped portion between the shaft portion 62 and the screw portion 63 .

The anchor device 1A includes an anchor plate 2 and a stopper 4 made of a metal leaf spring. The thickness of the anchor plate 2 is set smaller than the length of the shaft portion 62 of the stud 6 . In this embodiment, the anchor plate 2 is pressed against the vehicle body 7 via the spacer 64 when the anchor device 1A is fixed to the stud 6 .

In this embodiment, the stopper 4 is attached to the anchor plate 2 by a pair of rivets 3 (only one rivet 3 is shown in FIGS. 2 and 3). However, the stopper 4 may be attached to the anchor plate 2 with screws or the like. The metal forming the stopper 4 is not particularly limited, but is steel, for example.

The anchor plate 2 is formed with a first opening 21 for fixing the loop 11 formed at one end of the webbing 10 of the seat belt. The first opening 21 is an elongated hole extending in the width direction of the webbing 10 . Further, a second opening 22 is formed in the anchor plate 2 so as to be aligned with the first opening 21 in the axial direction of the webbing 10 . Hereinafter, for convenience of explanation, the first direction from the first opening 21 to the second opening 22 is also referred to as downward or downward, and the second direction from the second opening 22 to the first opening is also referred to as upward or upward.

The second opening 22 has an enlarged area 23 close to the first opening 21 and a locking area 24 extending from the enlarged area 23 in the opposite direction to the first opening 21 . The enlarged area 23 is an area into which the head 61 of the stud 6 can be inserted, and the lock area 24 is an area into which the head 61 of the stud 6 cannot enter from the enlarged area 23 and the shaft portion 62 can enter. That is, the width of the enlarged region 23 is greater than the diameter of the head 61 of the stud 6, and the width of the locking region 24 is less than the diameter of the head 61 of the stud 6 and greater than the diameter of the shank 62. .

More specifically, the upper portion of the enlarged area 23 is semicircular, and the intermediate and lower portions of the enlarged area 23 are straight with a constant width. A pair of through holes 25 for the rivets 3 are provided on both sides of the lower portion of the enlarged region 23 in the anchor plate 2 .

In this embodiment, the length of the enlarged region 23 in the vertical direction is set relatively long, and the length of the lock region 24 is set relatively short. This is because of the guide piece 43 of the stopper 4, which will be described later.

The stopper 4 overlaps the anchor plate 2 around the locking area 24 of the second opening 22 . The stopper 4 engages the head 61 of the stud 6 when the shank 62 of the stud 6 enters the locking area 24 from the enlarged area 23 .

The stopper 4 is bent into a U shape that opens upward when viewed from the side. Specifically, the stopper 4 includes a first plate-shaped portion 4A that contacts the anchor plate 2, a second plate-shaped portion 4B that is spaced apart from the first plate-shaped portion 4A, and a first plate-shaped portion 4A. It also includes a folded portion 4C that connects the lower portions of the second plate-shaped portion 4B (the ends opposite to the first opening 21).

The first plate-shaped portion 4A has a substantially U-shape opening upward. That is, the first plate-shaped portion 4A includes a pair of side portions located on both sides of the lower portion of the enlarged region 23 of the second opening 22 and the lock region 24 and a bottom portion located below the lock region 24 . A through hole 41 for the rivet 3 is provided in the upper portion of each side portion. The width of the opening of the first plate-like portion 4A (the distance between the side portions) is set larger than the width of the enlarged region 23 of the second opening 22 .

A pair of urging pieces 42 and a pair of guide pieces 43 are provided on the first plate-like portion 4A. The pair of urging pieces 42 are arranged inside both side portions of the first plate-shaped portion 4A, and the pair of guide pieces 43 are arranged inside the pair of urging pieces 42 .

More specifically, each urging piece 42 is connected to the upper part of the corresponding side part of the first plate-shaped part 4A, and extends downward from a position in contact with the anchor plate 2 while being lifted from the anchor plate 2. . A lower portion of the biasing piece 42 is positioned laterally of the lock area 24 and is bent obliquely inward.

When the shaft portion 62 of the stud 6 enters the locking region 24 from the enlarged region 23, the biasing piece 42 is formed between the head 61 of the stud 6 and the anchor plate 2 as shown in FIGS. 7(a) and 7(b). It intervenes and urges the head 61 away from the anchor plate 2 . As a result, the anchor plate 2 is pressed against the vehicle body 7 side, and relative vibration between the stud 6 and the anchor plate 2 is suppressed.

Each guide piece 43 extends upward from the lower end of the corresponding biasing piece 42 so as to be parallel to the biasing piece 42 . The guide piece 43 guides the head portion 61 of the stud 6 when the shaft portion 62 of the stud 6 enters the locking region 24 from the enlarged region 23 . More specifically, the guide piece 43 is positioned within the enlarged area 23 of the second opening 22 and is inclined from the lock area 24 toward the enlarged area 23 so as to approach the vehicle body 7 . Due to such a shape, when the shaft portion 62 of the stud 6 enters the lock area 24 from the enlarged area 23, as shown in FIGS. The portion 61 moves in the axial direction of the stud 6 along the guide piece 43 so as to be lifted above the surface of the anchor plate 2 .

A substantially rectangular opening 44 is provided in substantially the center of the second plate-shaped portion 4B. A locking piece 45 protruding downward toward the center of the opening 44 is provided on the second plate-shaped portion 4B. A lower portion of the locking piece 45 is bent toward the anchor plate 2 . When the anchor plate 2 is moved upward with the head 61 of the stud 6 inserted into the enlarged region 23 of the second opening 22 (see FIGS. 5A and 5B), the locking piece 45 The head 61 is allowed to pass while contacting the head 61 by elastically deforming away from the anchor plate 2 (see FIGS. 6(a) and 6(b)). Further, the locking piece 45 prevents the stud 6 from returning to the enlarged area 23 when the shaft portion 62 of the stud 6 enters the locking area 24 as shown in FIGS. 7(a) and 7(b).

When removing the anchor device 1A from the stud 6, the upper end of the second plate-shaped portion 4B is operated from the state shown in FIGS. 2 Elastically deform the entire plate-like portion 4B. This allows the stud 6 to return to the enlarged area 23 .

Each guide piece 43 described above is provided at a position facing the locking piece 45 in the thickness direction of the anchor plate 2 . 6(a) and 6(b), when the shaft portion 62 of the stud 6 enters the lock region 24 from the enlarged region 23, the head 61 of the stud 6 is engaged with the locking piece. The head 61 is guided so as to push up the 45 away from the anchor plate 2. - 特許庁

As described above, in the anchor device 1A of the present embodiment, the stopper 4 includes the guide piece 43, so that the head 61 of the stud 6 extends over the enlarged region 23 of the second opening 22 as shown in FIG. 5(b). When the anchor plate 2 is moved upward so that the shank 62 of the stud 6 enters the locking area 24 from the enlarged area 23 while remaining in the enlarged area 23 without passing through, the head of the stud 6 is moved upward. 61 is guided by the guide piece 43 and automatically moves in the axial direction of the stud 6 . Therefore, the anchor device 1A can be easily fixed to the stud 6. As shown in FIG.

When the anchor plate 2 is moved upward with the head 61 of the stud 6 inserted into the enlarged region 23, the head 61 of the stud 6 passes through the locking piece 45, so that the locking piece 45 is moved toward the anchor plate. It is necessary to push up in the direction away from 2. In this embodiment, since the head 61 of the stud 6 guided by the guide piece 43 pushes up the locking piece 45 in the direction away from the anchor plate 2, the operator can move the anchor plate 2 in the thickness direction perpendicular to the moving direction. You don't need to apply too much force. Therefore, the anchor device 1A can be fixed to the stud 6 more easily.

Furthermore, in this embodiment, when the anchor device 1A is fixed to the stud 6, the anchor plate 2 is pressed against the vehicle body 7 by the biasing force of the biasing piece 42 of the stopper 4. As shown in FIG. Therefore, it is possible to prevent the anchor plate 2 from vibrating with respect to the stud 6 and generating abnormal noise. Moreover, since the biasing piece 42 is interposed between the head 61 of the stud 6 and the anchor plate 2 , the head 61 of the stud 6 does not directly hit the biasing piece 42 such as the feet of the vehicle occupant or luggage. suppressed by That is, the head 61 of the stud 6 plays a role of protecting the biasing piece 42 of the stopper 4 . Therefore, the durability of the noise preventing function of the stopper 4 can be improved.

<Modification>
The biasing piece 42 and the guide piece 43 of the stopper 4 do not necessarily have to be parallel. For example, as shown in FIG. 8 , each biasing piece 42 may be connected to the bottom portion of the first plate-shaped portion 4A and extend upward from a position in contact with the anchor plate 2 while being lifted from the anchor plate 2 . In this case, the pair of guide pieces 43 may be arranged above the pair of urging pieces 42 and each guide piece 43 may extend upward from the upper end portion of the corresponding urging piece 42 . With such a configuration, since the urging piece 42 and the guide piece 43 are continuous, the shape of the stopper 4 can be simplified as compared with the case where the urging piece 42 and the guide piece 43 are arranged in parallel.

Further, the spacer 64 may be omitted, and the anchor plate 2 may be pressed against the stepped portion between the head portion 61 and the shaft portion 62 of the stud 6 so as to be lifted from the vehicle body 7 . That is, although illustration is omitted, the stopper 4 may include a pressing piece that presses the head 61 of the stud 6 against the anchor plate 2, like the conventional stopper 130 shown in FIG. It should be noted that this modified example can also be applied to a second embodiment, which will be described later.

(Second embodiment)
9 to 11 show a seat belt anchor device 1B according to a second embodiment of the present invention. In addition, in this embodiment, the same code|symbol is attached|subjected to the same component as 1st Embodiment, and the overlapping description is abbreviate|omitted.

In this embodiment, guide surfaces 26 are provided on both sides of the lock area 24 in the anchor plate 2 instead of providing the stopper 4 with the guide pieces 43 . Therefore, the length of the enlarged region 23 and the length of the lock region 24 in the vertical direction are substantially equal.

The guide surface 26 is provided using a stepped portion between the enlarged area 23 and the lock area 24 . Each guide surface 26 is inclined from the lock area 24 toward the enlarged area 23 so as to approach the vehicle body 7 . The guide surface 26 then guides the head 61 when the stud shank 62 is inserted into the lock region 24 of the second opening 22 .

Furthermore, in the present embodiment, each biasing piece 42 is provided with an overhanging portion 46 that projects so as to fill the gap between the corresponding guide surface 26 and the lower end portion of the biasing piece 42 .

This embodiment can also obtain the same effect as the first embodiment.

(Other embodiments)
The present invention is not limited to the embodiments described above, and various modifications are possible without departing from the gist of the present invention.

For example, the stopper 4 does not necessarily have to be U-shaped including the first plate-shaped portion 4A, the second plate-shaped portion 4B, and the folded portion 4C. For example, although illustration is omitted, instead of omitting the second plate-like portion 4B and the folded portion 4C, a floating portion that rises from the anchor plate 2 is provided above the first plate-like portion 4A. A stop piece 45 may be provided.

1A, 1B seat belt anchor device 10 webbing 11 loop 2 anchor plate 21 first opening 22 second opening 23 enlarged area 24 lock area 26 guide surface 4 stopper 42 biasing piece 43 guide piece 45 locking piece 4A first plate Part 4B Second plate-shaped part 4C Folded part 6 Stud 61 Head 62 Shaft part 7 Vehicle body

Claims (6)

A seat belt anchor device fixed to a stud provided on a vehicle body and having a shaft portion and a head portion having a diameter larger than that of the shaft portion,
A first opening for fixing a loop formed at one end of the webbing of the seat belt is formed, and an enlarged region into which the head of the stud can be inserted; an anchor plate formed with a second opening having a locking region into which the head portion of the stud cannot enter from the enlarged region but into which the shaft portion can enter;
a stopper attached to the anchor plate, wherein the anchor plate is moved in a direction from the second opening toward the first opening with the head of the stud inserted into the enlarged region of the second opening; a locking piece that allows passage of the head when the stud shank enters the lock region and prevents the head from returning to the enlarged region when the shank of the stud enters the lock region; a stopper including a guide piece that guides the head when entering the lock area from the area;
A portion of the guide piece is located within the thickness range of the anchor plate, is located within the enlarged area, and is inclined from the lock area toward the enlarged area so as to approach the vehicle body. Anchor device for seat belts. A seat belt anchor device fixed to a stud provided on a vehicle body and having a shaft portion and a head portion having a diameter larger than that of the shaft portion,
A first opening for fixing a loop formed at one end of the webbing of the seat belt is formed, and an enlarged region into which the head of the stud can be inserted; an anchor plate formed with a second opening having a locking region into which the head portion of the stud cannot enter from the enlarged region but into which the shaft portion can enter;
a stopper attached to the anchor plate, wherein the anchor plate is moved in a direction from the second opening toward the first opening with the head of the stud inserted into the enlarged region of the second opening; a locking piece that allows passage of the head when the stud shank enters the lock region and prevents the head from returning to the enlarged region when the shank of the stud enters the lock region; a stopper including a guide piece that guides the head when entering the lock area from the area;
The guide piece is positioned within the enlarged area, is inclined from the lock area toward the enlarged area so as to approach the vehicle body, and is positioned opposite the locking piece in the thickness direction of the anchor plate. a seat belt that guides the head portion so that the head portion pushes up the locking piece in a direction away from the anchor plate when the shaft portion enters the lock region from the enlarged region; Anchor device for. A seat belt anchor device fixed to a stud provided on a vehicle body and having a shaft portion and a head portion having a diameter larger than that of the shaft portion,
A first opening for fixing a loop formed at one end of the webbing of the seat belt is formed, and an enlarged region into which the head of the stud can be inserted; an anchor plate formed with a second opening having a locking region into which the head portion of the stud cannot enter from the enlarged region but into which the shaft portion can enter;
a stopper attached to the anchor plate, wherein the anchor plate is moved in a direction from the second opening toward the first opening with the head of the stud inserted into the enlarged region of the second opening; a locking piece that allows passage of the head when the stud shank enters the lock region and prevents the head from returning to the enlarged region when the shank of the stud enters the lock region; a stopper including a guide piece that guides the head when entering the lock area from the area;
The guide piece is positioned within the enlarged area and is inclined from the lock area toward the enlarged area so as to approach the vehicle body,
The stopper is an urging piece interposed between the head and the anchor plate to urge the head in a direction away from the anchor plate when the shaft enters the lock area from the enlarged area. An anchoring device for a seat belt, comprising: When the direction from the first opening to the second opening is defined as the first direction, and the direction from the second opening to the first opening is defined as the second direction,
The biasing piece extends from a position in contact with the anchor plate in the first direction while floating from the anchor plate,
4. The seatbelt anchor device according to claim 3, wherein said guide piece extends in said second direction from an end of said biasing piece in said first direction so as to be parallel to said biasing piece. When the direction from the first opening to the second opening is defined as the first direction, and the direction from the second opening to the first opening is defined as the second direction,
The biasing piece extends from a position in contact with the anchor plate in the second direction while being lifted from the anchor plate,
4. The seatbelt anchor device according to claim 3, wherein said guide piece extends in said second direction from an end of said biasing piece in said second direction. The stopper includes a first plate-shaped portion that contacts the anchor plate, a second plate-shaped portion that faces the first plate-shaped portion with a gap therebetween, and the first plate-shaped portion and the second plate-shaped portion. and a folded portion that connects the ends on the opposite side to the first opening of
The locking piece is provided on the second plate-shaped portion, and the biasing piece and the guide piece are provided on the first plate-shaped portion, according to any one of claims 3 to 5. seat belt anchor device.

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