JP2012153343A - Webbing guide structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To separate a webbing from a seatback with a simple structure.SOLUTION: In the webbing guide structure 10, when a webbing 20 is wound on a webbing take-up device, an upper end of a tongue plate 30 is brought into contact with a seat surface 16A of a rear seatback 16 and a protrusion 46 of a guide 40 is brought into contact with the seat surface 16A of the rear seatback 16. A guide hole 50 of the guide 40 is separated from the seat surface 16A of the rear seatback 16 to separate the webbing 20 drawn from the guide hole 50 from the seat surface 16A of the rear seatback 16. A gap G1 is formed between the webbing 20 drawn from the guide hole 50 and the seat surface 16A of the rear seatback 16 to allow an occupant to easily grip the webbing 20. The webbing 20 can be separated from the rear seatback 16 with a simple structure.

Description

  The present invention relates to a webbing guide structure for a webbing that restrains an occupant of a vehicle.

  In the seat belt wearing assistance device described in Patent Document 1 below, an overhang arm mechanism is accommodated in a notch in the seat back, and the overhang arm mechanism includes an overhang arm. The overhanging arm is rotatably supported by the support frame, and is connected to the motor via a wire and a spring. A belt holder is provided at the tip of the overhang arm.

  A seating detection sensor is provided on the seat surface of the seat, and when the occupant is seated on the seat, the seating detection sensor detects the seating of the occupant and the motor rotates forward. As a result, the wire and the spring are drawn to the motor side, and the projecting arm rotates and projects to the front of the seat back. At this time, the seat belt is projected forward of the seat back by the belt holder and is separated from the seat back. Thereby, a clearance is provided between the seat back and the seat belt, and the occupant can easily grip the seat belt.

  Here, in this seat belt mounting assist mechanism, as described above, the structure for separating the seat belt from the seat back is complicated.

JP 2010-105577 A

  In view of the above-described facts, an object of the present invention is to provide a webbing guide structure capable of separating a webbing from a seat back with a simple structure.

  According to a first aspect of the present invention, there is provided a webbing guide structure having a first insertion hole through which a webbing for restraining a seated occupant of the vehicle is inserted, and an engaging portion formed to be engageable with a buckle device of the vehicle. A second insertion hole that is provided on a tongue plate disposed on the seating surface side and guides the webbing from the first insertion hole to the engagement portion side by inserting the webbing that has passed through the first insertion hole. The guide portion is formed on the guide portion, protrudes toward the seat back side with respect to the guide portion, and contacts the seat back, thereby separating the second insertion hole from the seat back. And a protrusion.

  In the webbing guide structure according to claim 1, the tongue plate is disposed on the seating surface side of the vehicle seat back, and the tongue plate is formed so as to be engageable with the first insertion hole through which the webbing is inserted and the vehicle buckle device. Engaging portion.

The tongue plate is provided with a guide portion. A second insertion hole is formed in the guide portion. When the webbing that has passed through the first insertion hole is inserted into the second insertion hole, the webbing is guided from the first insertion hole to the engaging portion side. . Furthermore, the guide part is provided with a protrusion part, and the protrusion part protrudes toward the seat back side with respect to the guide part.

  Here, the second insertion hole is separated from the seat back by the protrusion coming into contact with the seat back. For this reason, the webbing drawn out from the second insertion hole is separated from the seat back, and a gap is provided between the webbing and the seat back. Thereby, a clearance gap can be provided between webbing and a seat back by the structure which provides a guide part in a tongue plate.

  A webbing guide structure according to a second aspect is the webbing guide structure according to the first aspect, wherein the webbing guide structure includes a support portion that is provided on the tongue plate and supports the guide portion so as to be rotatable. When engaged with the buckle device, the guide portion is rotated by the webbing that passes through the second insertion hole so that the second insertion hole is closer to the engagement portion side than the first insertion hole. Are arranged on the opposite side.

  In the webbing guide structure according to the second aspect, the guide portion is rotatably supported by the support portion of the tongue plate. When the engaging portion of the tongue plate is engaged with the buckle device, the guide portion is rotated by webbing that passes through the second insertion hole, and the second insertion hole engages with the first insertion hole. It is arranged on the opposite side to the side.

  For this reason, a tongue plate can be engaged with a buckle apparatus, without impairing the operativity at the time of engaging a tongue plate with a buckle apparatus.

  The webbing guide structure according to a third aspect is the webbing guide structure according to the second aspect, wherein when the engaging portion is engaged with the buckle device, the second insertion hole is extended from the first insertion hole. The protrusion is disposed on the tongue plate side with respect to the webbing drawn out toward the side.

  In the webbing guide structure according to claim 3, when the engagement portion of the tongue plate is engaged with the buckle device and the webbing is attached to the occupant, the webbing guide structure is pulled out from the first insertion hole toward the second insertion hole. The protrusion can be arranged on the side opposite to the occupant with respect to the webbing.

  The webbing guide structure according to a fourth aspect is the webbing guide structure according to the second or third aspect, wherein the support portion is disposed between the first insertion hole and the engagement portion.

  In the webbing guide structure according to claim 4, since the support portion is disposed on the engagement portion side with respect to the first insertion hole, the support portion is on the opposite side of the engagement portion with respect to the first insertion hole. Compared to the case where the guide unit is arranged, the rotation trajectory of the guide unit when the guide unit is rotated can be reduced.

  The webbing guide structure according to claim 5 is the webbing guide structure according to any one of claims 1 to 4, wherein a dimension in the width direction of the guide portion is larger than a dimension in the width direction of the dump plate. And it is set small.

  In the webbing guide structure according to the fifth aspect, since the dimension in the width direction of the guide portion is set smaller than the dimension in the width direction of the dump plate, the guide portion can be arranged in the width direction of the tongue plate.

  According to the webbing guide structure of the first aspect, the webbing can be separated from the seat back with a simple structure.

  According to the webbing guide structure of the second aspect, when the tongue plate is engaged with the buckle device, the influence on the operability due to the provision of the guide portion on the tongue plate can be suppressed.

  According to the webbing guide structure of the third aspect, even when the protrusion is provided on the guide portion, the foreign object feeling of the protrusion of the protrusion when the webbing is attached can be suppressed.

  According to the webbing guide structure of the fourth aspect, the guide portion can be downsized as compared with the case where the support portion is disposed on the side opposite to the engaging portion with respect to the first insertion hole.

  According to the webbing guide structure of the fifth aspect, it is possible to suppress an increase in size of the guide portion.

It is the perspective view seen from the vehicle left front which shows the webbing guide structure concerning an embodiment of the invention. It is the top view which looked at the tongue plate and guide used for the webbing guide structure shown by FIG. 1 from the vehicle rear. FIG. 3 is a cutaway perspective view showing when the guide shown in FIG. 2 is rotated. It is sectional drawing seen from the vehicle left side which shows before the webbing used for the webbing guide structure shown by FIG. 1 is mounted | worn. It is sectional drawing seen from the vehicle rear which shows the time of mounting | wearing the webbing used for the webbing guide structure shown by FIG.

  FIG. 1 shows a perspective view of a webbing guide structure 10 according to an embodiment of the present invention as viewed from the front left side of a vehicle. In the drawings, the front side of the vehicle is indicated by an arrow FR, the right side of the vehicle is indicated by an arrow RH, and the upper side is indicated by an arrow UP.

  As shown in this figure, a rear seat 12 as a seat on which an occupant is seated is provided at the rear of the vehicle. The front of the rear seat 12 is aligned with the front of the vehicle, and the left-right direction of the rear seat 12 is the vehicle width direction. Has been matched. The occupant is seated in the seating area 12 </ b> A of the rear seat 12.

  The rear seat 12 includes a rear seat cushion 14 (which is an element grasped as a “seat cushion” in a broad sense), and the rear seat cushion 14 is fixed in a state of being disposed substantially horizontally on the floor of the vehicle. . The rear seat 12 includes a rear seat back 16 as a seat back, and the rear seat back 16 is disposed in a standing state at a vehicle rear side end portion of the rear seat cushion 14. Further, a surface of the rear seat back 16 on the front side of the vehicle (the seating region 12A side) is a seating surface 16A. An anchor (not shown) is provided behind the rear seat cushion 14 in the vehicle, and the anchor is connected to the floor of the vehicle so that the tip of a webbing 20 described later can be fixed. A buckle device 18 is disposed on the rear seat cushion 14 on the inner side in the vehicle width direction of the seating region 12A. The buckle device 18 is connected to a floor portion of the vehicle so as to hold a tongue plate 30 described later.

  A webbing take-up device (not shown) as a take-up device is provided on the rear side of the vehicle above the rear seat back 16 outside the seating region 12A of the rear seat 12 in the vehicle width direction. It is fixed to a package tray (not shown). The webbing take-up device is provided with a drum-shaped spool (not shown) (which is an element grasped as a “winding shaft” in a broad sense), and both ends of the spool are rotatably supported on the side wall of the webbing take-up device. Has been.

  A base end portion of a webbing 20 formed in a long band shape is connected and fixed to the spool. When the spool is rotated around one of its axes (hereinafter, this direction is referred to as “winding direction”), the webbing 20 is wound on the spool from the base end side, and the webbing 20 is stored in the webbing winding device. Is done. On the other hand, when the webbing 20 is pulled from the front end side, the webbing 20 is pulled out while the spool rotates around the axis thereof (hereinafter, this direction is referred to as “drawing direction”).

  The webbing take-up device includes a mainspring spring (not shown) (which is an element grasped as an “urging member” in a broad sense), and the mainspring spring biases the spool in the winding direction. For this reason, the webbing 20 is wound around the spool by the urging force (winding force) of the mainspring spring and stored in the webbing winding device. Moreover, the webbing 20 is pulled out from the webbing take-up device in a state where the urging force of the mainspring spring is acting.

  The webbing 20 drawn out from the webbing take-up device is bent by the upper part of the rear seat back 16 and is disposed on the seating surface 16A side of the rear seat back 16. The webbing 20 is inserted between the rear side end of the rear seat cushion 14 and the lower end of the rear seat back 16, and the leading end of the webbing 20 is fixed to the anchor described above. Further, the webbing 20 is provided with a substantially cylindrical winding stopper (not shown) in the middle in the longitudinal direction, and the winding stopper is provided on the surface of the webbing 20 (the surface opposite to the rear seat back 16). Protrusively.

  As shown in FIGS. 2 to 4, a substantially T-shaped tongue plate 30 is provided at a position on the seating surface 16 </ b> A side of the rear seat back 16 at the longitudinal intermediate portion of the webbing 20.

  The tongue plate 30 includes a substantially rectangular plate-shaped main body portion 32 made of resin, and the main body portion 32 is disposed on the upper side (arrow A side in FIG. 2) of the tongue plate 30. A substantially elongated rectangular slit 34 serving as a first insertion hole is formed in a substantially central portion of the main body 32 so that the longitudinal direction of the slit 34 is in the width direction of the tongue plate 30 (arrow C in FIG. 2). Direction and arrow D direction). The above-described webbing 20 is movably inserted into the slit 34. Further, the dimension of the slit 34 in the vertical direction of the tongue plate 30 (the direction of arrow A and arrow B in FIG. 2) is set smaller than the protruding dimension of the winding stopper of the webbing 20, and the winding stopper is slit. 34 is configured not to pass through. Accordingly, the tongue plate 30 can be moved on the proximal end side of the webbing 20 with respect to the winding stopper, and the movement of the tongue plate 30 toward the distal end side of the webbing 20 is restricted at the position of the winding stopper. Yes.

  The tongue plate 30 includes a substantially T-shaped plate-like engagement plate 36 made of metal. The engagement plate 36 is disposed in the main body portion 32 and is provided integrally with the main body portion 32. ing. A substantially rectangular plate-like engagement portion 36A is provided at a lower portion of the engagement plate 36, and the engagement portion 36A projects from the lower portion of the main body portion 32 to the lower side of the tongue plate 30. ing. A substantially rectangular engaging hole 36B is formed through substantially the center of the engaging portion 36A. The engaging portion 36 </ b> A is configured to be engageable with the above-described buckle device 18, and the tongue plate 30 is held by the buckle device 18 by engaging the engaging portion 36 </ b> A with the buckle device 18.

  The body portion 32 of the tongue plate 30 is integrally provided with a substantially cylindrical support portion 38 at the rear seat back 16 side (one side) portion. The support portion 38 is disposed between the slit 34 and the engagement plate 36, and a support hole 38 </ b> A having a circular cross section is formed through the center portion of the support portion 38. The support holes 38 </ b> A are arranged with the axial direction being the width direction of the tongue plate 30.

  On the rear seat back 16 side of the tongue plate 30, a substantially rectangular frame-shaped guide 40 is provided as a guide portion. The guide 40 includes a pair of substantially cylindrical arms 42A and 42B on both sides in the width direction of the guide 40 (the direction of arrow C and the direction of arrow D in FIG. 2). Are arranged along the vertical direction (the direction of arrow A and the direction of arrow B in FIG. 2). A substantially cylindrical shaft 44 is stretched along the width direction of the guide 40 between the arm 42A and the arm 42B at the upper end (the end on the arrow A side in FIG. 2) of the arm 42A and the arm 42B. The shaft 44 is disposed coaxially with the support hole 38A of the tongue plate 30 and is rotatably inserted into the support hole 38A. Thus, the guide 40 is supported so as to be rotatable around the axis of the support hole 38A of the tongue plate 30 (in the direction of arrow E and arrow F in FIG. 3).

  The lower ends (ends on the arrow B side in FIG. 2) of the arms 42A and 42B are bent toward the rear seat back 16 side. Further, a projecting portion 46 having a substantially rectangular cross section as a protruding portion is stretched along the width direction of the guide 40 between the arm 42A and the arm 42B on the lower end portions of the arm 42A and the arm 42B. Therefore, the protruding portion 46 protrudes toward the rear seat back 16 (one side) with respect to the guide 40. Further, the protrusion 46 is disposed below the tongue plate 30 with respect to the engaging portion 36 </ b> A of the engaging plate 36 of the tongue plate 30.

  A columnar connecting portion 48 is stretched along the width direction of the guide 40 between the arm 42A and the arm 42B. Thereby, a guide hole 50 as a second insertion hole is formed between the connecting portion 48 and the protruding portion 46. The guide hole 50 is disposed below the tongue plate 30 with respect to the engaging portion 36 </ b> A of the engaging plate 36 of the tongue plate 30. Further, the webbing 20 is movably inserted into the guide hole 50, and the size of the guide hole 50 is set to be larger than the outer shape of the winding stopper of the webbing 20, and the guide hole 50 passes through the guide hole 50. It is comprised so that a winding stopper can pass. Furthermore, the dimension in the width direction of the guide 40 is set smaller than the dimension in the width direction of the main body portion 32 of the tongue plate 30, and the guide 40 is disposed in the width direction of the tongue plate 30.

  Here, the upper end of the tongue plate 30 is in contact with the seating surface 16 </ b> A of the rear seat back 16, and the tip of the protrusion 46 is in contact with the seating surface 16 </ b> A of the rear seat back 16. Further, the arm 42A and the arm 42B of the guide 40 are arranged in parallel with the tongue plate 30 when viewed from the vehicle width direction (the position shown in FIG. 4 and this position is referred to as “first position”). For this reason, the guide hole 50 of the guide 40 is separated from the seating surface 16 </ b> A of the rear seat back 16.

  Further, the webbing 20 drawn out from the webbing take-up device passes through the slit 34 of the tongue plate 30 from the opposite side (the other side) of the tongue plate 30 to the rear seat back 16 (on the rear seat back 16 side of the tongue plate 30 ( Pulled out to the other side. The webbing 20 drawn out from the slit 34 is disposed on the rear seat back 16 side of the guide 40, passes through the guide hole 50, and is drawn downward from the guide hole 50. For this reason, the webbing 20 is brought into contact with the protrusion 46 (the inner peripheral part of the guide hole 50), so that the webbing 20 drawn out from the guide hole 50 is separated from the seating surface 16A of the rear seat back 16. Thereby, a gap G1 is provided between the webbing 20 drawn out from the guide hole 50 and the seating surface 16A of the rear seat back 16 (see FIG. 4).

  On the other hand, as shown in FIG. 5, when the engaging portion 36 </ b> A of the tongue plate 30 is engaged with the buckle device 18, the webbing 20 pulled out from the webbing take-up device is separated from the seating region 12 </ b> A of the tongue plate 30. It passes through the slit 34 of the tongue plate 30 from the opposite side. The webbing 20 that has passed through the slit 34 of the tongue plate 30 is drawn from the slit 34 to the seating region 12A side of the tongue plate 30. Further, since the webbing 20 that has passed through the slit 34 is disposed on the vehicle front side of the occupant's waist, the webbing 20 is folded back at the slit 34 and pulled out from the slit 34 to the upper side of the tongue plate 30. Therefore, the webbing 20 comes into contact with the inner periphery of the guide hole 50 of the guide 40, and the guide 40 is rotated around the axis of the support hole 38A of the tongue plate 30 by the webbing 20 (at the position shown in FIG. 5). And this position is referred to as a “second position”). In addition, since the pulling-out direction of the webbing 20 from the slit 34 varies depending on the occupant's physique, the rotation angle (second position) of the guide 40 with respect to the tongue plate 30 varies depending on the occupant's physique.

  In the second position, since the webbing 20 drawn out from the slit 34 passes between the tongue plate 30 and the guide 40, a gap G <b> 2 is provided between the tongue plate 30 and the guide 40. Further, the protrusion 46 of the guide 40 is arranged on the tongue plate 30 side with respect to the webbing 20 drawn out from the slit 34 of the tongue plate 30 toward the guide hole 50. Further, the protruding portion 46 is disposed on the upper side of the tongue plate 30 so that the protruding portion 46 and the tongue plate 30 do not interfere with each other.

  Next, the operation of this embodiment will be described.

  In the webbing guide structure 10 of the present embodiment, the webbing 20 is stored in the webbing take-up device by the biasing force of the mainspring spring of the webbing take-up device. Further, the webbing 20 drawn out from the webbing take-up device is bent by the upper part of the rear seat back 16 and is disposed on the seating surface 16A side of the rear seat back 16. Furthermore, a tongue plate 30 and a guide 40 are provided at a position on the seating surface 16 </ b> A side of the rear seat back 16 in the middle portion in the longitudinal direction of the webbing 20, and the guide 40 is disposed at the first position.

  When the occupant seated in the seating area 12A of the rear seat 12 wears the webbing 20 on the body, the occupant grips the webbing 20 and pulls out the webbing 20 from the webbing take-up device against the urging force of the mainspring spring. . Then, the tongue plate 30 provided on the webbing 20 is moved toward the buckle device 18.

  By the way, the webbing 20 is pulled out from the webbing take-up device, and the tip of the webbing 20 is fixed to the anchor. Further, the spring force of the mainspring spring acts on the webbing 20. For this reason, when the tongue plate 30 is moved toward the buckle device 18, the webbing 20 drawn out from the webbing take-up device is folded back at the slit 34 and pulled out from the slit 34 inward in the vehicle width direction. For this reason, the webbing 20 drawn out from the slit 34 comes into contact with the inner peripheral portion of the guide hole 50 of the guide 40, so that the guide 40 is rotated around the axis of the support hole 38A by the webbing 20 (direction of arrow E in FIG. 3). It is rotated and moved from the first position to the second position.

  Thereafter, the tongue plate 30 is held by the buckle device 18 by engaging the engaging portion 36 </ b> A of the tongue plate 30 with the buckle device 18. Thereby, the webbing 20 is mounted on the body of the occupant.

  When the webbing 20 is mounted on the occupant's body, the webbing 20 pulled out from the webbing take-up device is disposed on the front side of the upper body of the occupant and passes through the slit 34 of the tongue plate 30. The webbing 20 that has passed through the slit 34 is folded back by the slit 34, passes through the gap G <b> 2 between the tongue plate 30 and the guide 40, and passes through the guide hole 50. The webbing 20 drawn out from the guide hole 50 is disposed on the vehicle front side of the occupant's waist (see FIG. 5).

  On the other hand, when the engagement between the buckle device 18 and the tongue plate 30 is released, the webbing 20 is wound around the webbing take-up device by the biasing force of the mainspring spring of the webbing take-up device. Accordingly, the tongue plate 30 and the guide 40 are moved outward in the vehicle width direction with respect to the buckle device 18.

  When the tongue plate 30 and the guide 40 are moved outward in the vehicle width direction with respect to the buckle device 18, the urging force of the mainspring spring acts on the webbing 20, so that the webbing 20 is moved by the upper part of the rear seatback 16. It is bent and arranged on the seating surface 16A side of the rear seat back 16.

  Therefore, the webbing 20 rotates the guide 40 around the axis of the support hole 38A of the tongue plate 30 (in the direction of arrow F in FIG. 3) and moves from the second position to the first position. Therefore, the webbing 20 drawn out from the slit 34 is disposed on the rear seat back 16 side of the guide 40, and is inserted through the guide hole 50 and drawn downward from the guide hole 50 (see FIG. 4).

  Here, when the webbing 20 is taken up by the webbing take-up device, the upper end portion of the tongue plate 30 is brought into contact with the seating surface 16A of the rear seat back 16, and the tip end portion of the protrusion 46 is arranged at the rear seat back 16. The seating surface 16A is abutted against. For this reason, the guide hole 50 of the guide 40 is separated from the seating surface 16A of the rear seat back 16, and the webbing 20 drawn out from the guide hole 50 is separated from the seating surface 16A of the rear seat back 16. As a result, a gap G1 is provided between the webbing 20 drawn out from the guide hole 50 and the seating surface 16A of the rear seat back 16, so that the occupant can easily grip the webbing 20.

  Therefore, the webbing 20 drawn from the guide hole 50 can be separated from the rear seat back 16 by the structure in which the guide 40 is provided on the tongue plate 30. Thereby, the webbing 20 can be separated from the rear seat back 16 with a simple structure.

  Further, as described above, the tongue plate 30 is provided with the support hole 38A, and the support hole 38A supports the guide 40 so as to be rotatable. When the engaging portion 36A of the tongue plate 30 is engaged with the buckle device 18, the webbing 20 contacts the inner peripheral portion of the guide hole 50, and the webbing 20 causes the guide 40 to rotate around the axis of the support hole 38A. Is moved (moved from the first position to the second position). In the second position, the guide hole 50 is disposed on the upper side of the tongue plate 30 with respect to the slit 34 (on the side opposite to the engaging portion 36A).

  For this reason, the tongue plate 30 can be engaged with the buckle device 18 without impairing the operability when the tongue plate 30 is engaged with the buckle device 18. Thereby, when engaging the engaging portion 36 </ b> A of the tongue plate 30 with the buckle device 18, the influence on the operability due to the provision of the guide 40 on the tongue plate 30 can be suppressed.

  Moreover, since the guide 40 is rotatably supported by the support hole 38A of the tongue plate 30, the guide 40 can be rotated in accordance with the drawing direction of the webbing 20 drawn from the slit 34. Thereby, the influence by having provided the guide 40 in the tongue plate 30 can be suppressed further.

  Further, when the guide 40 is moved to the second position, the protrusion 46 of the guide 40 is disposed on the tongue plate 30 side with respect to the webbing 20 drawn out from the slit 34 toward the guide hole 50. For this reason, when the webbing 20 is mounted on the occupant, the protrusion 46 is disposed on the opposite side of the occupant (seat region 12A) with respect to the webbing 20. Thereby, even if the protrusion 46 is provided on the guide 40, it is possible to reduce the feeling of foreign matter for the passenger of the protrusion 46.

  Further, the support portion 38 of the tongue plate 30 is disposed between the slit 34 and the engagement portion 36 </ b> A of the engagement plate 36. Therefore, as compared with the case where the support portion 38 is disposed on the opposite side of the engagement portion 36A with respect to the slit 34, the rotation of the guide 40 when the guide 40 is rotated around the axis of the support hole 38A. The movement trajectory becomes smaller. Thereby, compared with the case where the support part 38 is arrange | positioned with respect to the slit 34 on the opposite side to the engaging part 36A, the guide 40 can be reduced in size.

  Furthermore, the dimension in the width direction of the guide 40 is set smaller than the dimension in the width direction of the tongue plate 30. For this reason, the guide 40 can be arranged in the width direction of the tongue plate 30. Thereby, it can suppress that the guide 40 is enlarged.

  In the present embodiment, the guide 40 is provided on the rear seat back 16 side (one side) of the tongue plate 30. Instead of this, the guide 40 may be provided on the opposite side (the other side) of the tongue plate 30 to the rear seat back 16 side. In this case, the support portion 38 of the tongue plate 30 is provided on the opposite side of the tongue plate 30 from the rear seat back 16 side. Further, the arm 42A and the arm 42B of the guide 40 are arranged on the outer side in the width direction of the tongue plate 30, and a hole that does not interfere with the tongue plate 30 when the guide 40 is rotated from the first position to the second position. It is good also as a structure provided in the guide 40. FIG.

  In the present embodiment, the guide hole 50 of the guide 40 is disposed below the tongue plate 30 with respect to the engaging portion 36 </ b> A of the engaging plate 36 of the tongue plate 30. Alternatively, the guide hole 50 may be disposed between the slit 34 of the tongue plate 30 and the engaging portion 36A.

  Further, in the present embodiment, the support portion 38 of the tongue plate 30 is provided between the slit 34 and the engaging portion 36A. Alternatively, the support portion 38 of the tongue plate 30 may be provided on the opposite side of the engagement portion 36 </ b> A with respect to the slit 34.

  In the present embodiment, the webbing guide structure 10 is provided on the rear seat 12. Instead of this, the webbing guide structure 10 may be provided on a front seat provided in the front part of the vehicle. In this case, a webbing take-up device may be built in the upper part of the front seat, and the webbing may be arranged from the upper part of the front seat to the seating surface side of the front seat.

10 Webbing guide structure 16 Rear seat back (seat back)
18 Buckle device 20 Webbing 30 Tongue plate 34 Slit (first insertion hole)
36A Engagement part 38 Support part 40 Guide (guide part)
46 Protrusion (protrusion)
50 Guide hole (second insertion hole)

Claims (5)

A tongue plate having a first insertion hole for inserting a webbing for restraining a seated occupant of a vehicle and an engaging portion formed to be engageable with a buckle device of the vehicle and disposed on a seating surface side of the seat back of the vehicle A guide part provided with a second insertion hole provided to guide the webbing from the first insertion hole to the engagement part side by inserting the webbing that has passed through the first insertion hole;
A protrusion that is provided on the guide portion, protrudes toward the seat back with respect to the guide portion, and separates the second insertion hole from the seat back by contacting the seat back;
Webbing guide structure with. Provided on the tongue plate, and provided with a support part that rotatably supports the guide part,
When the engaging portion is engaged with the buckle device, the guide portion is rotated by the webbing that is inserted through the second insertion hole, and the second insertion hole is moved with respect to the first insertion hole. The webbing guide structure according to claim 1, wherein the webbing guide structure is disposed on a side opposite to the engagement portion side.   When the engaging portion is engaged with the buckle device, the protruding portion is disposed on the tongue plate side with respect to the webbing drawn from the first insertion hole toward the second insertion hole. The webbing guide structure according to claim 2.   The webbing guide structure according to claim 2 or 3, wherein the support portion is disposed between the first insertion hole and the engagement portion.   The webbing guide structure according to any one of claims 1 to 4, wherein a dimension in the width direction of the guide portion is set smaller than a dimension in the width direction of the dump plate.

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