JP2014061869A - Tongue for seat belt device and seat belt device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a tongue for a seat belt device capable of suppressing increase of a clamp load after the increase of the clamp load applied to a webbing reaches a prescribed magnitude, and to obtain a seat belt device.SOLUTION: In a tongue 10 for a seat belt device, when a load applied from a webbing 16 to a winding part 72 of a slider 62 becomes heavier than a mechanical strength of the winding part 72, the winding part 72 is deformed. While such a deformation is generated in the winding part 72, at least a part of the load applied from the webbing 16 to the winding part 72 is served to deformation of the winding part 72. Consequently, while such a deformation is generated in the winding part 72, when the load applied from the webbing 16 to the winding part 72 is further increased in the state where the clamp load is not increased, or increase of the clamp load is suppresses to finish deformation of the winding part 72, the clamp load is increased again (namely, increase timing of the clamp load is delayed.).

Description

  The present invention relates to a tongue for a seat belt device applied to a seat belt device for a vehicle and a seat belt device provided with such a tongue.

  A tongue for a seat belt device disclosed in Patent Document 1 (referred to as a “safety belt tongue” in Patent Document 1) includes a tongue main body formed in a substantially semicircular concave shape in a side view. I have. Two passage holes (in Patent Document 1, one is referred to as an “upper eye portion” and the other is referred to as a “lower eye portion”) are formed in the tongue main body portion. Webbing (referred to as “belt webbing” in Patent Document 1) passes through these passage holes. The webbing passes through the inside of the tongue main body between the two passage holes.

  In addition, a clamp member (referred to as “bending and tightening element” in Patent Document 1) curved in a substantially semicircular shape is provided inside the tongue main body. Webbing is hung around one end of the clamp member in the bending direction. When the tension of the webbing exceeds a predetermined magnitude, the clamp member is pressed by the webbing, and is thereby rotated along the inner peripheral surface of the tongue body part.

  In the clamp member thus rotated, the other end in the bending direction is pressed against the webbing to press the webbing, and the other end in the bending direction of the clamp member and the tongue main body portion clamp the webbing. This suppresses the shoulder webbing, which is the base end portion of the webbing, from moving toward the lap webbing, which is the tip side of the tongue.

JP-T-2009-525909

  By the way, in Patent Document 1 described above, the load that sandwiches the webbing when the other end in the bending direction of the clamp member and the tongue main body clamp the webbing, that is, the clamp load increases as the webbing tension increases.

  In view of the above fact, the present invention can provide a seatbelt device tongue and a seatbelt device that can suppress an increase in the clamp load after the increase in the clamp load applied to the webbing reaches a predetermined magnitude. Is the purpose.

  The tongue for a seat belt device according to the first aspect of the present invention is provided with an insertion portion that is provided on the webbing so that the webbing passes through the inside and is movable in the longitudinal direction of the webbing, and can be inserted into a buckle. A tongue body having a webbing, a hooking part around which the webbing is looped, and a clamp part set at a site different from the hooking part, and the hooking part is pulled by the webbing to be predetermined. The clamp portion and the tongue main body clamp the webbing by moving in the direction of, and the tension load applied from the webbing to the hanging portion exceeds a predetermined magnitude. A clamp member whose part is deformed.

  In the tongue for the seatbelt device according to the first aspect of the present invention, the insertion portion of the tongue main body is inserted into the buckle. In this state, if the webbing is hung around the occupant's body seated on the seat, the webbing is attached to the occupant's body, and the occupant's body is restrained by the webbing. The tongue body is provided with a clamp member. The clamp member has a hanging portion, and webbing is hung around the hanging portion.

  When the vehicle suddenly decelerates with the webbing attached to the occupant's body, the occupant's body attempts to move inertially toward the front side of the vehicle. As a result, when the webbing is pulled by the occupant's body, the hanging portion of the clamp member is pulled by the webbing. The clamp member is moved in a predetermined direction by being pulled by the webbing.

  When the clamp member moves in a predetermined direction as described above, the clamp portion set in the clamp member clamps the webbing together with the tongue main body. As a result, the webbing moves along its longitudinal direction, for example, a part that restrains the shoulder or chest of the occupant in the webbing, a part where the so-called “shoulder webbing” passes the tongue body and restrains the occupant's waist, a so-called “wrap” It moves to the "webbing" side, and this can suppress the lap webbing from becoming longer than before.

  If the webbing is further pulled from such a state and the tensile load applied to the hanging portion increases, the hanging portion is deformed by the tensile load. Accordingly, at least a part of the tensile load applied from the webbing to the clamp member, that is, at least a part of the load by which the occupant's body pulls the webbing is absorbed. While the wrapping portion is deformed in this way, an increase in clamp load that clamps the webbing between the clamp member and the tongue main body is suppressed, and the timing of further increase in the clamp load can be delayed.

  According to a second aspect of the present invention, the tongue for a seat belt apparatus according to the first aspect of the present invention is the first aspect of the present invention, wherein the clamp member penetrates in the width direction of the webbing and is at one place in the circumferential direction. It is formed in a discontinuous cylindrical shape, and the hanging portion is configured to include one end in the circumferential direction of the clamp member, and when the tensile load exceeds the predetermined size, one end in the circumferential direction of the clamp member is It is configured to be deformed radially inward from the other end side.

  According to the tongue for a seat belt device according to the second aspect of the present invention, the clamp member is formed in a cylindrical shape penetrating in the width direction of the webbing. However, the clamp member is formed in a discontinuous side-view substantially C shape at one location in the circumferential direction. The hooking portion of the clamp member includes one end in the circumferential direction of the clamp member.

  In the clamp member, when the tensile load applied from the webbing exceeds a predetermined magnitude, one end in the circumferential direction (that is, at least part of the hung portion) is deformed radially inward from the other end in the circumferential direction. For this reason, when such a deformation | transformation arises, the circumferential direction one end of a clamp member does not contact | abut to a tongue main body. When one end in the circumferential direction of the clamp member comes into contact with the tongue main body, there is a possibility that movement and deformation of the clamp member due to a tensile load are restricted. However, in the tongue for the seat belt device according to the present invention, even if the hanging portion is deformed as described above, one end in the circumferential direction of the clamp member does not come into contact with the tongue main body. Can move and transform.

  According to a third aspect of the present invention, the tongue for a seat belt apparatus according to the first or second aspect of the present invention is the shoulder webbing of the webbing on the proximal end side in the longitudinal direction from the tongue main body. Thus, the upper side of the waist of the occupant's body is restrained by the shoulder webbing, and the front end of the webbing in the longitudinal direction of the tongue main body is a lap webbing, and the waist of the occupant's body is restrained by the lap webbing. The hanging portion is set on the shoulder webbing side with respect to the clamp portion.

  According to the tongue for a seat belt apparatus according to the third aspect of the present invention, the proximal end side in the longitudinal direction of the webbing from the tongue main body is shoulder webbing, and the shoulder webbing is above the waist of the occupant's body. Restrained by. On the other hand, the front end side in the longitudinal direction of the webbing from the tongue main body is a lap webbing, and the waist of the occupant's body is restrained by the lap webbing.

  Here, in the tongue for the seat belt device according to the present invention, the hanging portion is set on the shoulder webbing side with respect to the clamp portion. For this reason, the hanging portion is deformed when the tensile load applied from the shoulder webbing exceeds a predetermined magnitude. As described above, the shoulder webbing is hung around the occupant's waist, that is, around the abdomen, chest, shoulder, and the like of the occupant. For this reason, at least a part of the load when the shoulder webbing is pulled by the abdomen, chest, shoulder, etc. of the occupant is subjected to the deformation of the hung portion and absorbed.

  According to a fourth aspect of the present invention, the tongue for a seat belt device according to the third aspect of the present invention is the first aspect of the present invention, wherein the insertion portion side of the tongue main body is opposite to a webbing passage side of the tongue main body. It is configured to be rotatable.

  According to the tongue for the seatbelt device according to the fourth aspect of the present invention, the insertion portion side of the tongue main body is rotatable with respect to the webbing passage side of the tongue main body.

  By the way, in a configuration in which the webbing that extends from the top to the bottom of the vehicle passes from the bottom of the tongue body to the top with the insertion part of the tongue body attached to the buckle, it is attached to the insertion part buckle of the tongue body When not in use, there is a possibility that the top and bottom of the tongue body will be reversed by the webbing tension.

  Here, in the tongue for the seat belt device according to the present invention, even if the webbing passage side of the tongue body is turned upside down, the insertion part side of the tongue body is not turned upside down, or the webbing of the tongue body The reversal angle is smaller than the passing part side. For this reason, if a passenger | crew grasps and pulls the insertion part side of a tongue main body, the webbing passage part side of a tongue main body will become easy to invert up and down with the tension of webbing. Thereby, even if the tongue for the sieve belt device according to the present invention has the above-described structure, it can be easily attached to the buckle.

  For the seat belt device according to the present invention as set forth in claim 5, a webbing whose front end is directly or indirectly locked to the seat or the vehicle body of the vehicle at a side of a seating position of an occupant in a vehicle seat; The buckle provided on the opposite side to the locking position on the front end side of the webbing via the seating position, and the tongue for the seat belt device according to any one of claims 1 to 4. I have.

  According to the seat belt device of the fifth aspect, the front end side of the webbing is directly or indirectly locked to the seat or the vehicle body of the vehicle on the side of the seating position of the occupant in the vehicle seat. Further, a buckle is provided on the side opposite to the locking position on the front end side of the webbing via the seating position of the occupant on the seat. When the occupant seated on the seat wears the webbing on the body, the seat belt device tongue is attached to the buckle while the webbing is hung around the occupant's body. The tongue for the seat belt device is held by the buckle, and the webbing is put on the occupant's body.

  Here, the tongue for the seat belt device constituting the seat belt device according to the present invention is the tongue for the seat belt device according to any one of claims 1 to 4 described above. For this reason, the same effect as the invention of any one of claims 1 to 4 described above is exhibited, and as a result, the same effect as the invention of any one of claims 1 to 4 described above is obtained. Can be obtained.

  As described above, according to the present invention, an increase in the clamp load after the clamp load applied to the webbing reaches a predetermined magnitude can be suppressed.

It is a front view showing roughly the composition of the seatbelt device concerning a 1st embodiment. It is a disassembled perspective view which shows roughly the structure of the tongue for seatbelt apparatuses which concerns on 1st Embodiment. It is side surface sectional drawing which shows schematically the structure of the tongue for seatbelt apparatuses which concerns on 1st Embodiment. It is side surface sectional drawing corresponding to FIG. 3 which shows the state by which the webbing was clamped. It is sectional drawing corresponding to FIG. 4 which shows the state which the clamp member deform | transformed. It is side surface sectional drawing which shows schematically the structure of the tongue for seatbelt apparatuses which concerns on 2nd Embodiment. It is side surface sectional drawing corresponding to FIG. 6 which shows the state currently pulled in order to mount | wear the buckle with the seatbelt apparatus tongue. It is side surface sectional drawing corresponding to FIG. 6 which shows the state with which the tongue for seatbelt apparatuses was mounted | worn with the buckle. It is side surface sectional drawing corresponding to FIG. 8 which shows the state by which the webbing was clamped. It is sectional drawing corresponding to FIG. 9 which shows the state which the clamp member deform | transformed.

  Next, each embodiment of the present invention will be described. In the following description of each embodiment, the same reference numerals are given to the same parts as those in the previous embodiment, and detailed descriptions thereof are given. Omitted.

<Configuration of First Embodiment>
FIG. 1 is a front view schematically showing the overall configuration of a seat belt apparatus 12 using a seat belt apparatus tongue 10 (hereinafter simply referred to as “tang 10”) according to the first embodiment.

  As shown in this figure, the seat belt device 12 includes a webbing take-up device 14 as webbing storage means. The webbing take-up device 14 is fixed to the vehicle body constituting the vehicle, for example, on the lower end side of the center pillar of the vehicle. The webbing take-up device 14 is provided with a spool so as to be rotatable around an axis whose axial direction is the longitudinal direction of the vehicle, for example. A longitudinal base end side of the webbing 16 formed in the shape of a long belt having flexibility is locked to the spool. The base end side in the longitudinal direction of the webbing 16 is stored in a state of being wound around the outer periphery of the spool.

  On the other hand, the front end side of the spool in the webbing 16 is pulled out upward of the vehicle along the center pillar, passes through a shoulder anchor 18 provided in the vicinity of the upper end portion of the center pillar, and is folded downward of the vehicle. . The front end of the webbing 16 that is turned downward in the vehicle is engaged with an anchor 22 as an anchor member fixed to the vehicle body on the side of the vehicle seat 20. The tongue 10 according to the present embodiment is provided between the tip of the webbing 16 (the portion locked to the anchor 22) and the shoulder anchor 18.

  In the present embodiment, the webbing take-up device 14 and the anchor 22 are fixed to the vehicle body side. However, for example, the webbing take-up device 14 may be built in the seat back 24 constituting the seat 20, or the webbing take-up device 14 may be provided behind the seat back 24. . Further, the anchor 22 may be configured to be attached to a member constituting the skeleton of the seat 20 or the like instead of the vehicle body.

  A buckle 26 is fixed to a member constituting a skeleton of the vehicle body or the seat 20 on the opposite side of the arrangement position of the webbing retractor 14 and the anchor 22 via the seat 20. Although the details will be described later, the tongue 10 can be attached to the buckle 26. When the passenger 30 seated on the seat cushion 28 of the seat 20 pulls the tongue 10, the webbing 16 is pulled out from the spool of the webbing take-up device 14. When the webbing 16 pulled out in this way is hung around the body of the occupant 30 from the front and the tongue 10 is mounted on the buckle 26, the webbing 16 is mounted on the body of the occupant 30.

  In this state, a portion of the webbing 16 between the tongue 10 and the anchor 22 is a lap webbing 32, and the waist of the occupant 30 is restrained from the front by the lap webbing 32. On the other hand, a portion of the webbing 16 between the shoulder anchor 18 and the tongue 10 is a shoulder webbing 34, and the shoulder portion and chest of the occupant 30 are restrained from the front by the shoulder webbing 34.

  The seat belt device 12 of the present embodiment has a configuration corresponding to a single seat 20 such as a driver's seat or a passenger seat of a vehicle, for example. The present invention can be applied to bench seats. When the present invention is applied to such a bench seat, the webbing retractor 14 and the anchor 22 are provided on one side in the seat width direction with respect to the seating position of the occupant 30 on the bench seat, and the buckle 26 is provided on the other side. Provided.

(Configuration of tongue 10)
2 shows an outline of the configuration of the tongue 10 in an exploded perspective view, and FIG. 3 shows a configuration of the tongue 10 in a side sectional view.

  As shown in this figure, the tongue 10 includes a cored bar 42 constituting a tongue main body 40. The cored bar 42 is formed by punching a metal flat plate and further bending it. The core metal 42 includes an insertion portion 44. The insertion portion 44 is inserted from an opening formed in the buckle 26 when the tongue 10 is attached to the buckle 26. A through hole 46 is formed in the insertion portion 44. When the insertion portion 44 is inserted into the buckle 26, a latch provided on the buckle 26 enters the through hole 46. When the insertion portion 44 tries to come out of the buckle 26, the latch comes into contact with the inner peripheral portion of the through hole 46. As a result, the insertion portion 44 is restricted from moving in the direction of coming out of the buckle 26, and the tongue 10 is attached to the buckle 26.

  As shown in FIG. 3, the cored bar 42 includes a base portion 48. The base 48 is formed by bending a crank (bowl) around an axis whose width direction is the axial direction. A hole (for example, a rectangular hole) (not shown) penetrating in the thickness direction of the base 48 is formed in a portion bent in a crank shape in the base 48. Further, the base portion 48 is covered with a covering portion 52 formed of a synthetic resin material.

  The covering portion 52 is formed with a slider accommodating portion 54. The slider accommodating part 54 is formed in the part corresponding to the hole of the base part 48 mentioned above. The slider accommodating portion 54 opens on one side in the thickness direction of the base portion 48 (right side in FIG. 3) and opens on the insertion portion 44 side (lower side in FIG. 3).

  Further, a webbing passage hole 56 is formed in the covering portion 52. The webbing passage hole 56 penetrates the covering portion 52 so as to open on the insertion portion 44 side and the opposite side. The end portion of the webbing passage hole 56 on the insertion portion 44 side is connected to the slider accommodating portion 54. The webbing 16 from the shoulder anchor 18 toward the anchor 22 passes through the webbing passage hole 56 and then passes through the slider accommodating portion 54.

  A slider 62 as a clamp member is provided inside the slider accommodating portion 54. The slider 62 is formed in a substantially cylindrical shape penetrating in the width direction of the core metal 42 by appropriately bending the metal plate material around an axis whose axial direction is the width direction of the core metal 42. The slider 62 includes a sliding contact portion 64 whose outer surface is planar. A portion of the slider accommodating portion 54 that faces the sliding contact portion 64 is a guide surface 66. The guide surface 66 is an inclined surface that gradually moves toward one side in the thickness direction of the cored bar 42 in the direction toward the insertion portion 44, and the slider 62 moves while being guided by the guide surface 66.

  A slider-side clamp portion 68 as a clamp portion is formed continuously from the slide contact portion 64 on the side in the circumferential direction of the slider 62 with respect to the slide contact portion 64. The slider side clamp portion 68 is formed so as to be bent or bent in a wave shape in a side view (shown in FIG. 3). A main body side clamp portion 70 is formed inside the slider accommodating portion 54 corresponding to the slider side clamp portion 68.

  The main body side clamp part 70 is formed in a wave shape whose side cross-sectional shape is appropriately bent or curved around an axis whose axial direction is the width direction of the cored bar 42. The concave portion in the main body side clamp portion 70 is opposed to the convex portion in the slider side clamp portion 68 in the sliding direction of the slider 62 that is guided by the guide surface 66 and slides. It faces the concave portion in the slider side clamp portion 68 in the sliding direction.

  For this reason, when the slider 62 is guided by the guide surface 66 and slides toward the main body side clamp portion 70, the convex portion in the slider side clamp portion 68 enters the concave portion in the main body side clamp portion 70, and the concave portion in the slider side clamp portion 68 enters the concave portion. The convex part in the main body side clamp part 70 enters, and the slider side clamp part 68 and the main body side clamp part 70 sandwich the webbing 16 while curving around the axis whose axial direction is the width direction.

  Hereinafter, for the sake of convenience, the moving direction (sliding direction) of the slider 62 when the slider side clamp part 68 approaches the main body side clamp part 70 by being guided by the guide surface 66 will be referred to as “clamp direction”.

  The side opposite to the sliding contact portion 64 of the slider-side clamp portion 68 along the circumferential direction of the slider 62 (one end side in the circumferential direction of the clamp member in the claims) is a hooking portion 72, which is shown in FIG. As described above, the webbing 16 that has passed through the webbing passage hole 56 and entered the slider accommodating portion 54 is wound around the hanging portion 72. The webbing 16 that has been wound around the hanging portion 72 in this manner has a shoulder webbing 34 on the proximal end side (that is, the shoulder anchor 18 side) than the webbing 16 and a lap webbing 32 on the distal end side (that is, the anchor 22 side). It becomes. Further, the end portion of the hanging portion 72 along the circumferential direction of the slider 62 opposite to the slider-side clamp portion 68 (one end portion in the circumferential direction of the clamp member in the claims) is a bent piece 74, It enters the inside of the slider 62 rather than the contact portion 64.

  Further, slider urging means (not shown) is provided inside the slider 62 or inside the slider accommodating portion 54. The slider 62 is urged by the slider urging means in a direction away from the main body side clamp portion 70 (that is, a direction opposite to the clamping direction). Therefore, when the load applied to the slider 62 in the clamping direction is larger than the urging force of the slider urging means, the slider 62 is guided by the guide surface 66 and slides in the clamping direction.

<Operation and Effect of First Embodiment>
Next, the operation and effect of the present embodiment will be described.

  In the seat belt device 12 to which the tongue 10 is applied, when the occupant 30 seated on the seat cushion 28 of the seat 20 wears the webbing 16 on the body, first, the webbing 16 is pulled together with the tongue 10. By pulling the webbing 16, the webbing 16 is pulled out from the spool of the webbing take-up device 14. The webbing 16 drawn out in this way is hung around the body of the occupant 30 from the front. When the insertion portion 44 of the tongue 10 is inserted into the buckle 26 in this state, the tongue 10 is held by the buckle 26 and the webbing 16 is attached to the body of the occupant 30.

  In this state, the webbing 16 that has passed through the webbing passage hole 56 and has entered the slider accommodating portion 54 is wound around the hanging portion 72 of the slider 62 and escapes from the slider accommodating portion 54 as shown in FIG. On the other hand, the webbing 16 is folded back toward the base end (upward in FIG. 3). In this state, the waist of the occupant 30 is restrained by the lap webbing 32 from the front or upper side of the seat 20, and the shoulder, chest, and abdomen of the occupant 30 (that is, above the waist of the occupant 30 body) are forward of the seat 20. Is restrained by the shoulder webbing 34.

  With the webbing 16 attached, for example, when the vehicle suddenly decelerates, both the lap webbing 32 and the shoulder webbing 34 of the webbing 16 are pulled forward of the seat 20 by the body of the occupant 30. When the lap webbing 32 and the shoulder webbing 34 are pulled in this manner, the hooking portion 72 of the slider 62 is pulled in the clamping direction by the webbing 16 inside the slider accommodating portion 54 of the tongue 10. When this tensile load exceeds the urging force of the slider urging means, the slider 62 slides in the clamping direction.

  When the slider 62 slides in the clamping direction, one surface in the thickness direction of the webbing 16 (the right side surface in FIG. 3) is pressed by the slider-side clamp portion 68, and the webbing 16 is pressed against the body-side clamp portion 70 of the slider accommodating portion 54. Pressed. As a result, as shown in FIG. 4, the webbing 16 is clamped by the slider-side clamp unit 68 and the body-side clamp unit 70 while being curved following the unevenness of the slider-side clamp unit 68 and the body-side clamp unit 70. The Thus, by clamping the webbing 16, it is possible to prevent or suppress the portion of the webbing 16 on the shoulder webbing 34 side from passing through the slider accommodating portion 54 and moving to the lap webbing 32 side.

  Further, if the force with which the body of the occupant 30 pulls the lap webbing 32 and the shoulder webbing 34 toward the front of the seat 20 in this state increases, the tensile load applied from the webbing 16 to the hanging portion 72 of the slider 62 increases. Further, along with this, a load for sandwiching the webbing 16 between the slider side clamp portion 68 of the slider 62 and the main body side clamp portion 70 of the slider accommodating portion 54, that is, a “clamp load” increases.

  Here, when the tensile load applied from the webbing 16 to the hooking portion 72 of the slider 62 increases and exceeds the mechanical strength of the hooking portion 72 of the slider 62 (that is, the hooking portion of the slider 62 from the webbing 16). When the load applied to 72 increases and exceeds a predetermined size), the looping portion 72 is deformed so that the bent piece 74 further enters the inside of the slider 62, as shown in FIG.

  While such deformation occurs in the hanging portion 72, at least a part of the tensile load applied from the webbing 16 to the hanging portion 72 of the slider 62 is used for deformation of the hanging portion 72. For this reason, while such a deformation | transformation has arisen in the hanging part 72, a clamp load does not increase, or the increase in a clamp load is suppressed, and the webbing 16 is further in the state which the deformation | transformation of the hanging part 72 was complete | finished. When the load applied to the hanging portion 72 of the slider 62 increases, the clamp load again increases (that is, the increase timing of the clamp load is delayed).

  As described above, in the tongue 10 according to the present embodiment, an increase after the clamp load reaches a predetermined magnitude can be suppressed, and a further increase timing can be delayed.

<Second Embodiment>
Next, a second embodiment will be described.

  FIG. 8 shows a tongue 100 for a seatbelt device according to the present embodiment (hereinafter simply referred to as “tang 100”) by a cross-sectional view corresponding to FIG. 3 describing the first embodiment. Yes. FIG. 6 is a sectional view showing the state where the tongue 100 is not attached to the buckle 26.

  As shown in these drawings, in the tongue 100, the core metal 42 is divided into two parts, that is, an insertion part 44 side and a base part 48 side. Further, the core metal 42 divided into two in this way is connected by a hinge 102. The hinge 102 has a hinge shaft 104 along the width direction of the core metal 42. For this reason, in the tongue 100, the insertion portion 44 side and the base portion 48 side of the cored bar 42 are relatively rotatable about the hinge shaft 104.

  Also, as shown in FIG. 8, the tongue 100 has basically the same configuration as the tongue 10 according to the first embodiment except that the cored bar 42 is divided as described above. However, as can be seen by comparing FIG. 4 and FIG. 8, the tongue 100 and the tongue 10 according to the first embodiment have a bilaterally symmetric structure. Therefore, unlike the tongue 10, the webbing 16 from the shoulder anchor 18 toward the anchor 22 passes through the inside of the slider accommodating portion 54 and then passes through the webbing passage hole 56.

  For this reason, the webbing 16 passes through the webbing passage hole 56 from the lower side after being hooked on the hooking portion 72 of the slider 62 with the tongue 100 as shown in FIG. For this reason, as shown in FIG. 6, when the tongue 100 is not attached to the buckle 26, the base 48 side of the tongue main body 40 is inverted upside down by the tension of the webbing 16. In addition, the webbing 16 is hung on the hung portion 72 of the slider 62 on the shoulder webbing 34 side rather than the portion clamped by the slider side clamp portion 68 of the slider 62 and the main body side clamp portion 70 of the slider accommodating portion 54. .

  Next, the operation and effect of the present embodiment will be described.

  When the occupant 30 wears the webbing 16, the insertion portion 44 side is gripped from the hinge shaft 104 of the core metal 42 and pulled toward the buckle 26 as shown in FIG. In this state, the insertion portion 44 is attached to the buckle 26, and the webbing 16 is attached to the occupant 30.

  Here, immediately before the insertion portion 44 is attached to the buckle 26, the lap webbing 32 is pulled upward from the tongue main body 40. For this reason, the base 48 side of the tongue main body 40 with respect to the hinge shaft 104 is pressed by the lap webbing 32 (that is, due to the tension of the webbing 16) and rotated. Accordingly, the occupant 30 does not have to correct the posture of the tongue main body 40 by rotating the base 48 side of the tongue main body 40 in particular from the hinge shaft 104.

  In a state where the webbing 16 is attached to the body of the occupant 30, the slider 62 slides as the webbing 16 is pulled by the body of the occupant 30 as in the first embodiment. As a result, as shown in FIG. 9, the webbing 16 is clamped by the slider 62 and the tongue main body 40. Further, when the slider 62 is pulled by the webbing 16 in this clamped state, as shown in FIG. 10, the hanging portion 72 is deformed as in the first embodiment.

  In the present embodiment, as described above, the webbing 16 is closer to the shoulder webbing 34 than the portion clamped by the slider-side clamp part 68 of the slider 62 and the body-side clamp part 70 of the slider accommodating part 54. It is hung on the hung portion 72 of 62. For this reason, the hanging portion 72 is deformed by a tensile load from the shoulder webbing 34. The shoulder webbing 34 is hung around the chest, shoulders, and abdomen of the occupant 30 body. Therefore, the tensile load used for the deformation of the hanging portion 72 is a load that the chest, shoulder, and abdomen of the occupant 30 pull the shoulder webbing 34. For this reason, in the present embodiment, the chest, shoulder, and abdomen of the occupant 30 can absorb at least part of the load that pulls the shoulder webbing 34 by the deformation of the wrapping portion 72.

  In the present embodiment, the deformation of the hanging portion 72 in the slider 62 is such that the bent piece 74 further enters the inside of the slider 62. However, the deformation of the slider 62 is not limited to such a mode. For example, the bent portion 74 is not formed at one end in the circumferential direction of the slider 62, and the hanging portion 72 is deformed so that one end in the circumferential direction of the slider 62 moves to the outside of the slider 62 by deformation of the hanging portion 72. May be.

  However, in the configuration in which the bent piece 74 is further deformed so as to enter the inside of the slider 62 as in the present embodiment, the bent piece 74 (that is, one end side in the circumferential direction of the slider 62) is the guide surface. No contact with the inner wall of the slider accommodating portion 54 such as 66. For this reason, the slider 62 can be smoothly slid in the clamping direction.

DESCRIPTION OF SYMBOLS 10 Seat belt device tongue 12 Seat belt device 16 Webbing 26 Buckle 32 Lap webbing 34 Shoulder webbing 40 Tongue body 62 Slider (clamp member)
68 Slider side clamp (clamp)
72 Hanging part 100 tongue for seat belt device

Claims (5)

A tongue body provided on the webbing so as to be movable in the longitudinal direction of the webbing through the inside of the webbing and having an insertion part that can be inserted into a buckle;
A hook portion around which the webbing is hung, and a clamp portion set at a portion different from the hung portion, and the hung portion is pulled by the webbing and moves in a predetermined direction. The clamp member and the tongue main body clamp the webbing, and when the tensile load applied from the webbing to the hanging part exceeds a predetermined magnitude, the clamping part is deformed. When,
A tongue for a seat belt device comprising: The clamp member penetrates in the width direction of the webbing and is formed in a discontinuous cylindrical shape at one place in the circumferential direction,
The hanging portion includes one end in the circumferential direction of the clamp member, and when the tensile load exceeds the predetermined size, one end in the circumferential direction of the clamp member is more radially inward than the other end. The seatbelt tongue according to claim 1, wherein the tongue is configured to be deformed. The base end side in the longitudinal direction of the webbing from the tongue main body is a shoulder webbing, and the upper side of the waist of the occupant's body is restrained by the shoulder webbing,
The front end side in the longitudinal direction of the webbing from the tongue body is a lap webbing, and the waist of the occupant's body is restrained by the lap webbing,
The seat belt device tongue according to claim 1 or 2, wherein the hanging portion is set closer to the shoulder webbing than the clamp portion.   The seat belt device tongue according to claim 3, wherein the insertion portion side of the tongue main body is configured to be rotatable with respect to a webbing passage side of the tongue main body. A webbing whose front end is directly or indirectly locked to the seat or the vehicle body of the vehicle at the side of the seating position of the occupant in the vehicle seat;
A buckle provided on the opposite side to the locking position on the tip side of the webbing via the seating position;
The tongue for a seat belt device according to any one of claims 1 to 4,
A seat belt device comprising:

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