JP5820743B2 - Webbing movement mechanism - Google Patents

Description

  The present invention relates to a webbing moving mechanism that moves a webbing to at least one of an upper side and a front side of an occupant.

  In the leecher described in Patent Document 1 below, a holding member is provided at the tip of the leecher body, and the holding member is moved by extension of the leecher body. A cutout portion is formed through the holding member, the cutout portion is opened to the passenger side, and webbing is inserted therethrough. For this reason, by moving the holding member, the webbing is moved obliquely upward in front of the occupant.

  However, in such a leecher, when the holding member is moved, when the webbing is inserted into the opening of the notch and hooked on the holding member, the webbing is inserted into the notch from the opening and held. It is preferable that the reliability of hooking the webbing on the member can be increased.

JP 2004-142619 A

  An object of the present invention is to obtain a webbing moving mechanism capable of increasing the certainty of hooking webbing on the hooking means in consideration of the above fact.

The webbing moving mechanism according to claim 1 is arranged on the side of the occupant and is tensioned, and moving means for moving the webbing to at least one of the upper side and the front side of the occupant against the tension, A tongue provided on the webbing and engaged with a buckle to attach the webbing to an occupant, and provided on the moving means, and an insertion port is provided, and the insertion port is enlarged by a biasing force. And hooking means for hooking and moving the webbing when the webbing is inserted, and for reducing the insertion port by applying the tension of the webbing.

  The webbing movement mechanism according to claim 2 is the webbing movement mechanism according to claim 1, wherein the hooking means is a displacement member that reduces the insertion port by being displaced by the tension of the webbing. Have.

  In the webbing moving mechanism according to the first aspect, the webbing disposed on the side of the occupant is subjected to tension, and the moving means moves the webbing against at least one of the upper side and the front side of the occupant. Further, a tongue is provided on the webbing, and the webbing is attached to the occupant by engaging the tongue with the buckle.

  The moving means is provided with a hooking means, and the hooking means is provided with an insertion port. When the webbing is inserted into the insertion port, the hooking means hooks and moves the webbing.

  Here, the insertion port is enlarged, and when the webbing is inserted into the insertion port, the hooking means is applied with the tension of the webbing to reduce the insertion port. For this reason, when the webbing is inserted into the insertion port, since the insertion port is enlarged, the certainty that the webbing is inserted into the insertion port can be increased, and the certainty that the webbing is hooked on the hooking means can be increased. .

  In the webbing movement mechanism according to the second aspect, the insertion port is reduced by the displacement member of the hooking means being displaced by the tension of the webbing. For this reason, a structure can be simplified.

It is the side view seen from the vehicle left side which shows the principal part of the vehicle in the 1st Embodiment of this invention. It is the side view seen from the vehicle left side which shows after the action | operation of the webbing movement mechanism which concerns on the 1st Embodiment of this invention. (A) And (B) is the top view seen from the upper part which shows the principal part of the webbing movement mechanism which concerns on the 1st Embodiment of this invention, (A) is before webbing movement by the said webbing movement mechanism (B) shows the time of webbing movement by the webbing movement mechanism. (A) And (B) is the top view seen from the upper part which shows the principal part of the webbing movement mechanism which concerns on the 2nd Embodiment of this invention, (A) is before webbing movement by the said webbing movement mechanism (B) shows the time of webbing movement by the webbing movement mechanism. It is the perspective view seen from the vehicle left diagonal back which shows the principal part of the webbing movement mechanism which concerns on the 3rd Embodiment of this invention. (A) And (B) is sectional drawing seen from the upper part which shows the principal part of the webbing movement mechanism which concerns on the 3rd Embodiment of this invention, (A) is before webbing movement by the said webbing movement mechanism (B) shows the time of webbing movement by the webbing movement mechanism.

[First Embodiment]
FIG. 1 shows a main part of a vehicle 12 to which a webbing moving mechanism 10 according to a first embodiment of the present invention is applied, in a side view as seen from the left side of the vehicle. In the drawing, the front side of the vehicle is indicated by an arrow FR, the outer side in the vehicle width direction (right side of the vehicle) is indicated by an arrow OUT, and the upper side is indicated by an arrow UP.

  As shown in FIG. 1, in the vehicle 12 in the present embodiment, a seat 14 (for example, a driver's seat) is installed in the passenger compartment 16, and the front, rear, right side, and left side of the seat 14 are respectively the vehicle 12. Is directed to the front, rear, right, and left.

  A seat cushion 14A is provided in the lower portion of the seat 14, and the seat cushion 14A is disposed substantially horizontally. A seat back 14B is provided on the upper portion of the seat 14, and the seat back 14B is erected upward from the rear end of the seat cushion 14A. An occupant 18 (for example, a driver) of the vehicle 12 can be seated on the seat 14.

  A seating sensor 20 as occupant detection means is provided in the seat 14, and the seating sensor 20 can detect that the occupant 18 is seated on the seat 14.

  The seat 14 is equipped with a webbing moving mechanism 10 (seat belt device).

  The webbing moving mechanism 10 is provided with a first winding device 22 (shoulder retractor) as a storage means. The first winding device 22 is located on the outer side and the lower side of the rear portion of the seat 14 in the vehicle body direction. (It may be the sheet 14). The first winding device 22 is provided with a first spool (not shown). A long belt-shaped webbing 24 (seat belt) as a belt is wound around the first spool from the base end side. Yes. Therefore, the webbing 24 is wound around the first spool by rotating the first spool in the winding direction, and the first spool is pulled out (winding direction) when the webbing 24 is pulled out from the first spool. In the opposite direction).

  The first winding device 22 applies a biasing force in the winding direction to the first spool, whereby the biasing force in the winding direction to the first spool is applied to the webbing 24. When the vehicle 12 collides (emergency), the first winding device 22 detects at least one of sudden deceleration of the vehicle and sudden withdrawal of the webbing 24 from the first spool, and the webbing 24 from the first spool. Lock the drawer.

  The webbing 24 is movably inserted in a shoulder anchor 26 (slip joint) as an anchor (upper support portion) on the front end side of the first winding device 22, and the shoulder anchor 26 is a vehicle at the rear portion of the seat 14. It is rotatably attached to the vehicle body (or the seat 14) on the outer side and the upper side in the width direction. Accordingly, the webbing 24 is supported by the shoulder anchor 26 on the distal end side from the first winding device 22.

  The webbing moving mechanism 10 is provided with a second winding device 28 (wrap retractor) as a storage means (outer support portion), and the second winding device 28 is located outside the rear portion of the seat 14 in the vehicle width direction and On the lower side, it is fixed to the vehicle body (or the seat 14). The second winding device 28 is provided with a second spool (not shown), and the webbing 24 is wound on the second spool from the leading end side, so that the leading end side of the webbing 24 is connected to the second winding device 28. It is supported. Therefore, the webbing 24 is wound around the second spool by rotating the second spool in the winding direction, and the second spool is pulled out (winding direction) when the webbing 24 is pulled out from the second spool. In the opposite direction).

  The second winding device 28 applies a biasing force in the winding direction to the second spool, whereby the biasing force in the winding direction to the second spool is applied to the webbing 24. When the vehicle 12 collides (emergency), the second winding device 28 detects at least one of sudden deceleration of the vehicle and sudden withdrawal of the webbing 24 from the second spool, and the webbing 24 from the second spool. Lock the drawer.

  As described above, the first winding device 22 applies an urging force in the winding direction to the first spool to the webbing 24, and the second winding device 28 moves in the winding direction to the second spool. Energizing force is given. Therefore, tension is applied to the webbing 24 by the first winding device 22 and the second winding device 28, and the webbing 24 is connected to the shoulder anchor 26 and the second on the outer side in the vehicle width direction at the rear portion of the seat 14. It extends substantially vertically with the winding device 28 and is disposed perpendicular to the vehicle width direction.

  A tongue 30 is fixed to the webbing 24 at an arbitrary position between the shoulder anchor 26 and the second winding device 28.

  The webbing moving mechanism 10 is provided with a buckle 32 (inner anchor) as a member for supporting the tongue 30, and the buckle 32 is provided on the vehicle body (or the seat 14) on the inner side and the lower side of the seat 14 in the vehicle width direction. It is supported. A tongue 30 is engaged with and disengaged from the buckle 32, and the webbing 24 is interposed between the shoulder anchor 26 and the second winding device 28 by engaging the tongue 30 with the buckle 32. , The buckle 32 is supported by the tongue 30. As a result, the webbing 24 is mounted on the occupant 18, and a portion (shoulder belt portion) between the shoulder anchor 26 and the tongue 30 of the webbing 24 is obliquely passed over the chest of the occupant 18 and the tongue of the webbing 24 is A portion (lap belt portion) between 30 and the second winding device 28 is stretched laterally around the waist of the occupant 18.

  A buckle switch 34 is provided in the buckle 32 as engagement detecting means, and the buckle switch 34 can detect that the tongue 30 is engaged with the buckle 32.

  The webbing moving mechanism 10 is provided with a reacher 36 (easy access outer) as a moving means, and the reacher 36 is supported by the vehicle body (or the seat 14) on the outer side and the lower side of the seat 14 in the vehicle width direction. ing.

  The leecher 36 is provided with an arm part 38 as a moving part (expandable part), and the arm part 38 extends obliquely upward in the front of the vehicle. The arm portion 38 is provided with a plurality of cylindrical cylinders 40 on the same axis, and the diameters of the plurality of cylinders 40 are different from each other. In the plurality of cylinders 40, the small-diameter side cylinders 40 are sequentially inserted into the large-diameter side cylinders 40 so as not to be relatively rotatable, and the plurality of cylinders 40 are superposed on each other in the radial direction. Further, the proximal end of the small-diameter side cylinder 40 is engageable with the distal end of the large-diameter side cylinder 40.

  When the leecher 36 is positively driven, the cylinder 40 (hereinafter referred to as the “front end tube 42”) having the smallest diameter as the installation portion is moved toward the front end of the arm portion 38. Therefore, the base end of the small-diameter side cylinder 40 is sequentially engaged with the distal end of the large-diameter side cylinder 40 in the order of the small-diameter side cylinder 40 to the large-diameter side cylinder 40, and a plurality of cylinders When the arm 40 is moved toward the distal end of the arm portion 38, the arm portion 38 is extended obliquely upward in front of the vehicle (see FIG. 2). On the other hand, when the leecher 36 is reversely driven, the distal end tube 42 is moved in the proximal direction of the arm portion 38. For this reason, the plurality of cylinders 40 are moved in the proximal direction of the arm portion 38, and the small-diameter-side cylinder 40 is moved from the large-diameter-side cylinder 40 to the small-diameter-side cylinder 40 in the order of the small-diameter-side cylinder 40. By sequentially disengaging the base end of the cylindrical body 40, the arm portion 38 contracts obliquely downward rearward of the vehicle.

  As shown in detail in FIG. 3A, a head 44 as a hooking means (restricting member) is installed at the tip of the tip tube 42. A columnar installation shaft 46 is provided at the base end side portion of the head 44, and the head 44 is installed in the distal end tube 42 by being coaxially fixed to the distal end tube 42. .

  A hook 48 having a U-shaped cross section as a hooking portion is provided at the tip side portion of the head 44, and the hook 48 has an L-shaped plate shape as a fixing member (insertion portion) on the outer side in the vehicle width direction. The first hook 50 and a second hook 52 having an L-shaped cross section as a displacement member (insertion portion) on the inner side in the vehicle width direction are provided.

  The vehicle rear side portion (base end side portion) of the first hook 50 is fixed to the installation shaft 46 at the center in the vehicle width direction, and the vehicle front side portion (tip end portion) of the first hook 50 is the installation shaft. 46 is arranged in parallel to the vehicle and extends to the front side of the vehicle (arranged perpendicular to the vehicle width direction). A columnar stopper 50 </ b> A is provided on the vehicle front side portion of the first hook 50, and the stopper 50 </ b> A protrudes in the thickness direction of the first hook 50.

  A center portion of the second hook 52 is rotatably supported at an inner end portion in the vehicle width direction of a vehicle rear side portion of the first hook 50, and the second hook 52 is a vehicle front side portion with respect to the first hook 50. The (front end side portion) is urged in the direction toward the inner side in the vehicle width direction and functions as an urging means. The second hook 52 is locked to the rotation (displacement) by the biasing force by the stopper 50A of the first hook 50 at the vehicle width direction outer side end portion of the vehicle rear side portion (base end side portion). The vehicle rear side portion of the hook 52 is inclined in a direction toward the vehicle front side toward the vehicle width direction outer side, and protrudes toward the vehicle front side with respect to the vehicle rear side portion of the first hook 50.

  An insertion hole 54 is formed between the first hook 50 and the second hook 52, and an insertion port 54 </ b> A is provided between the vehicle front side end of the first hook 50 and the vehicle front side end of the second hook 52. Is formed. The insertion hole 54 is opened to the vehicle front side through the insertion port 54A, and the insertion port 54A is opposed to the webbing 24 between the shoulder anchor 26 and the second winding device 28 in the front of the vehicle. Moreover, the vehicle front side part of the 2nd hook 52 inclines in the direction which goes to a vehicle width direction inner side as it goes to the vehicle front side, Therefore, 54 A of insertion ports are expanded inside the vehicle width direction.

  As shown in FIG. 1, the seating sensor 20, the buckle switch 34, and the leecher 36 are electrically connected to a control device 56 as control means.

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

  In the webbing movement mechanism 10 having the above configuration, when the seating sensor 20 detects that the occupant 18 is seated on the seat 14, the leecher 36 is positively driven by the control of the control device 56, and the arm portion 38 of the leecher 36 is moved. The head 44 on the distal end side of the arm portion 38 is moved obliquely upward in front of the vehicle by being extended obliquely upward in front of the vehicle. For this reason, as shown in FIGS. 2 and 3B, the webbing 24 between the shoulder anchor 26 and the second winding device 28 and below the tongue 30 is inserted into the insertion hole 54 of the hook 48 of the head 44. The webbing 24 and the tongue 30 are moved obliquely upward in front of the vehicle by being inserted from the vehicle front side through the mouth 54A and hooked on the hook 48, and are disposed on the front side of the occupant 18 on the outer side in the vehicle width direction. . Therefore, the occupant 18 can easily grip at least one of the webbing 24 and the tongue 30.

  Thereafter, the occupant 18 grips at least one of the webbing 24 and the tongue 30, removes the webbing 24 from the hook 48, and moves the webbing 24 and the tongue 30 inward in the vehicle width direction (occupant 18 side). 18 engages the tongue 30 with the buckle 32, and the webbing 24 is attached to the occupant 18.

  Further, when the buckle switch 34 detects that the tongue 30 is engaged with the buckle 32, the leecher 36 is reversely driven by the control of the control device 56, and the arm portion 38 is contracted obliquely downward in the rear of the vehicle. Thus, the head 44 is moved obliquely downward after the vehicle.

  Here, before the webbing 24 is inserted into the insertion hole 54 of the hook 48 via the insertion port 54A when the arm portion 38 of the leecher 36 is extended obliquely upward in the front of the vehicle, FIG. As shown, the vehicle front side portion of the second hook 52 of the hook 48 is inclined toward the vehicle width direction inner side as it goes to the vehicle front side, and the insertion port 54A is expanded toward the vehicle width direction inner side. For this reason, the certainty that the webbing 24 is inserted into the insertion hole 54 of the hook 48 via the insertion port 54A can be increased, and the certainty that the webbing 48 is hooked on the hook 48 can be increased.

  Further, when the webbing 24 is inserted into the insertion hole 54 of the hook 48, as shown in FIG. 3B, the vehicle rear side portion of the second hook 52 has the tension of the webbing 24 (the first winding device 22 and The second hook 52 is rotated against the urging force by applying the urging force from the second winding device 28 to the rear side of the vehicle. For this reason, the vehicle front side portion of the second hook 52 is rotated outward in the vehicle width direction, the insertion port 54A is reduced outward in the vehicle width direction, and the vehicle front side portion of the second hook 52 is directed toward the vehicle front side. (It is arranged perpendicular to the vehicle width direction). Accordingly, when the leecher 36 moves the webbing 24 and the tongue 30 obliquely upward in the front of the vehicle, the webbing 24 can be prevented from moving inward in the vehicle width direction beyond the front part of the second hook 52. 48 can move the webbing 24 and the tongue 30 obliquely upward in front of the vehicle without dropping off.

  Moreover, when the occupant 18 grips at least one of the webbing 24 and the tongue 30, the action of the tension of the webbing 24 on the vehicle rear side portion of the second hook 52 is released as shown in FIG. Thus, the second hook 52 is rotated by the biasing force. For this reason, while the vehicle rear side part of the 2nd hook 52 is rotated to the vehicle front side, the vehicle front side part of the 2nd hook 52 is rotated inside the vehicle width direction. Accordingly, the insertion port 54A is expanded inward in the vehicle width direction, so that the occupant 18 can easily remove the webbing 24 from the hook 48, and the occupant 18 easily moves the webbing 24 inward in the vehicle width direction. The occupant 18 can easily wear the webbing 24.

  Further, when the occupant 18 removes the webbing 24 from the hook 48, the second hook 52 is rotated to the initial position by the biasing force. For this reason, the head 44 can be automatically returned to the initial state.

  Further, the vehicle rear side portion of the second hook 52 is rotated against the urging force by applying the tension of the webbing 24, so that the insertion port 54A is reduced and the vehicle rear side of the second hook 52 is provided. When the portion is released from the tension of the webbing 24 and rotated by the biasing force, the insertion port 54A is enlarged. For this reason, a structure can be simplified.

  In the present embodiment, the second hook 52 is rotatable with respect to the installation shaft 46. However, the first hook 50 may be rotatable (displaced) with respect to the installation shaft 46. In this case, the first hook 50 is biased with respect to the installation shaft 46 in a direction in which the front portion of the vehicle is directed outward in the vehicle width direction.

  In this embodiment, the first hook 50 is provided with a stopper 50A. However, the stopper 50 </ b> A may be provided on the second hook 52.

[Second Embodiment]
FIG. 4A shows a plan view of the main part of the webbing moving mechanism 60 according to the second embodiment of the present invention as seen from above.

  The webbing moving mechanism 60 according to the present embodiment has substantially the same configuration as that of the first embodiment, but differs in the following points.

  As shown in FIG. 4A, in the webbing moving mechanism 60 according to the present embodiment, a rectangular plate-like base 62 is provided on the hook 48 in the head 44 of the reacher 36, and the base 62 is arranged in the vehicle width direction. It is fixed to the installation shaft 46 at the center.

  A center portion of the first hook 50 is rotatably supported at an outer end portion of the base 62 in the vehicle width direction. The first hook 50 functions as a displacement member, and a stopper 50A is provided for the first hook 50. It is provided in the vehicle width direction inner side edge part of the vehicle rear side part.

  The center portion of the second hook 52 is rotatably supported at the vehicle width direction inner end portion of the base 62, and the vehicle width direction outer end portion of the rear side portion of the second hook 52 is locked to the vehicle width direction end portion. A long locking hole 64 as a part is formed through. The stopper 50A of the first hook 50 is inserted into the locking hole 64, and the first hook 50 and the second hook 52 are predetermined by moving the stopper 50A along the longitudinal direction of the locking hole 64. It can be rotated in the range.

  The second hook 52 is urged in the direction toward the inner side in the vehicle width direction with respect to the base 62 and functions as an urging means, and the urging force of the second hook 52 acts as a locking hole 64 and a stopper. By being transmitted to the first hook 50 via 50A, the first hook 50 is urged toward the vehicle width direction outer side with respect to the base 62 and functions as an urging means. .

  In the first hook 50 and the second hook 52, the stopper 50A is locked to the outer end in the vehicle width direction of the locking hole 64, and the rotation (displacement) due to the urging force is locked. For this reason, the vehicle rear side portion of the first hook 50 is inclined in a direction toward the vehicle front side toward the inner side in the vehicle width direction, protrudes toward the vehicle front side with respect to the base 62, and the vehicle rear side of the second hook 52. The side portion is inclined in a direction toward the vehicle front side as it goes outward in the vehicle width direction, and protrudes toward the vehicle front side with respect to the base 62. Further, the vehicle front side portion of the first hook 50 is inclined toward the vehicle width direction outer side as it goes to the vehicle front side, and the vehicle front side portion of the second hook 52 is moved toward the vehicle front side toward the vehicle width direction inner side. Therefore, the insertion port 54A between the vehicle front side end of the first hook 50 and the vehicle front side end of the second hook 52 is expanded outward in the vehicle width direction and inside in the vehicle width direction. Yes.

  Here, also in this embodiment, the same operations and effects as those in the first embodiment can be obtained.

  In particular, when the arm portion 38 of the leecher 36 extends obliquely upward in front of the vehicle, before the webbing 24 is inserted into the insertion hole 54 of the hook 48 via the insertion port 54A, as shown in FIG. As described above, the vehicle front side portion of the first hook 50 of the hook 48 is inclined toward the vehicle width direction outer side as it goes to the vehicle front side, and the vehicle front side portion of the second hook 52 of the hook 48 moves toward the vehicle front side. The insertion port 54 </ b> A is expanded outward in the vehicle width direction and inward in the vehicle width direction by being inclined in the direction toward the inner side in the width direction. For this reason, the reliability with which the webbing 24 is inserted into the insertion hole 54 of the hook 48 via the insertion port 54A can be further increased, and the reliability with which the webbing 48 is hooked on the hook 48 can be further increased.

  Furthermore, when the webbing 24 is inserted into the insertion hole 54 of the hook 48, the vehicle rear side portion of the first hook 50 and the vehicle rear side portion of the second hook 52 are webbing 24 as shown in FIG. The first hook 50 and the second hook 52 rotate against the urging force by acting on the rear side of the vehicle with the tension (the tension due to the urging force from the first winding device 22 and the second winding device 28). Is done. For this reason, the vehicle front side portion of the first hook 50 is turned inward in the vehicle width direction, and the vehicle front side portion of the second hook 52 is turned outward in the vehicle width direction, so that the insertion port 54A is inward in the vehicle width direction. In addition, the vehicle front side portion of the first hook 50 and the vehicle front side portion of the second hook 52 are directed toward the vehicle front side (disposed perpendicularly to the vehicle width direction). As a result, when the leecher 36 moves the webbing 24 and the tongue 30 obliquely upward in the front of the vehicle, the webbing 24 can be restricted from moving outside the vehicle front side portion of the first hook 50 in the vehicle width direction. The webbing 24 can be restricted from moving inward in the vehicle width direction beyond the vehicle front side portion of the second hook 52, and the hook 48 can be moved obliquely upward in the front of the vehicle without dropping the webbing 24 and the tongue 30. .

  Moreover, when the occupant 18 grips at least one of the webbing 24 and the tongue 30, as shown in FIG. 4A, the first hook 50 and the second hook 52 are connected to the rear part of the vehicle. By releasing the tension of the webbing 24, the first hook 50 and the second hook 52 are rotated by the biasing force. For this reason, the vehicle rear side portion of the first hook 50 and the vehicle rear side portion of the second hook 52 are rotated to the vehicle front side, and the vehicle front side portion of the first hook 50 and the vehicle front side portion of the second hook 52 are Each of them is turned outward in the vehicle width direction and inward in the vehicle width direction. As a result, the insertion port 54A is expanded outward in the vehicle width direction and inward in the vehicle width direction, whereby the occupant 18 can easily remove the webbing 24 from the hook 48, and the occupant 18 moves the webbing 24 inward in the vehicle width direction. The occupant 18 can easily move the webbing 24.

  Further, when the occupant 18 removes the webbing 24 from the hook 48, the first hook 50 and the second hook 52 are rotated to the initial position by the urging force. For this reason, the head 44 can be automatically returned to the initial state.

  Further, the vehicle rear side portion of the first hook 50 and the vehicle rear side portion of the second hook 52 are rotated against the urging force due to the tension of the webbing 24, whereby the insertion port 54A is reduced. At the same time, the vehicle rear side portion of the first hook 50 and the vehicle rear side portion of the second hook 52 are released from the action of the tension of the webbing 24 and rotated by the biasing force, so that the insertion port 54A is enlarged. For this reason, a structure can be simplified.

  In the present embodiment, the second hook 52 is biased. However, the first hook 50 may be biased together with or instead of this. In this case, the first hook 50 is urged toward the outside in the vehicle width direction with respect to the base 62 at the vehicle front side portion.

  In the present embodiment, the first hook 50 is provided with the stopper 50 </ b> A, and the second hook 52 is provided with the locking hole 64. However, the first hook 50 may be provided with the locking hole 64 and the second hook 52 may be provided with the stopper 50A.

[Third Embodiment]
FIG. 5 is a perspective view of the main part of the webbing moving mechanism 70 according to the third embodiment of the present invention as seen obliquely from the left rear of the vehicle. FIG. 6 (A) shows the webbing movement. The main part of the mechanism 70 is shown in a sectional view as seen from above.

  The webbing moving mechanism 70 according to the present embodiment has substantially the same configuration as that of the first embodiment, but differs in the following points.

  As shown in FIGS. 5 and 6A, in the webbing moving mechanism 70 according to the present embodiment, the first hook 50 is provided with the stopper 50A in the first embodiment in the hook 48 of the head 44. Absent.

  The tip tube 42 of the leecher 36 is a displacement means, and the tip side portion of the tip tube 42 is made into a substantially rectangular tube-shaped fitting portion 72, and the upper and lower walls of the fitting portion 72 are It has a substantially V shape in plan view (may be a substantially U shape in plan view). The axially intermediate portion of the distal end cylinder 42 is a rectangular cylindrical insertion portion 74. The insertion portion 74 has a smaller sectional area than the fitting portion 72 and is closed at the proximal end. It has been.

  An installation spring 76 (coil spring) is installed as an installation means between the installation shaft 46 of the head 44 and the proximal end in the insertion portion 74 of the distal end tube 42. It is supported by the tip tube 42 through 76. Therefore, the hook 48 of the head 44 is disengaged from the inside of the fitting portion 72 of the front end tube 42 to the vehicle front side, and the installation shaft 46 of the head 44 is placed in the fitting portion 72 of the front end tube 42 and the front side of the insertion portion 74 in the vehicle. It is arranged in the department.

  In the hook 48 of the head 44, the second hook 52 is formed in a rectangular plate shape, and the second hook 52 is formed at the vehicle rear side end portion of the vehicle rear side portion of the first hook 50 in the vehicle width direction inner end portion. It is rotatably supported. The second hook 52 is urged toward the inner side in the vehicle width direction with respect to the first hook 50 and functions as an urging means, and the second hook 52 is a vehicle of the fitting portion 72 of the tip tube 42. The rotation (displacement) due to the urging force is locked by the inner portion in the width direction and is directed inward in the vehicle width direction.

  Here, also in this embodiment, the same operations and effects as those in the first embodiment can be obtained.

  In particular, when the arm portion 38 of the leecher 36 is extended obliquely upward in front of the vehicle, before the webbing 24 is inserted into the insertion hole 54 of the hook 48 via the insertion port 54A, FIGS. ), The second hook 52 of the hook 48 of the head 44 is directed inward in the vehicle width direction, and the insertion port 54A is expanded inward in the vehicle width direction. For this reason, the certainty that the webbing 24 is inserted into the insertion hole 54 of the hook 48 via the insertion port 54A can be increased, and the certainty that the webbing 48 is hooked on the hook 48 can be increased.

  Further, when the webbing 24 is inserted into the insertion hole 54 of the hook 48, as shown in FIG. 6B, the vehicle rear side portion of the first hook 50 has the tension of the webbing 24 (the first winding device 22 and The tension of the urging force from the second winding device 28 is applied to the rear side of the vehicle, and the head 44 is moved to the rear side of the vehicle against the urging force of the installation spring 76. Is inserted (inserted) into the fitting portion 72 of the distal end tube 42, and the installation shaft 46 of the head 44 is inserted into the insertion portion 74 of the distal end tube 42. For this reason, the second hook 52 is rotated to the vehicle front side against the urging force by the vehicle width direction inner side portion of the fitting portion 72, the insertion port 54A is reduced to the vehicle width direction outer side, and the second hook 52 is directed to the front side of the vehicle (arranged perpendicular to the vehicle width direction). Accordingly, when the leecher 36 moves the webbing 24 and the tongue 30 obliquely upward in the front of the vehicle, the webbing 24 can be restricted from moving inward in the vehicle width direction beyond the second hook 52, and the hook 48 can be moved to the webbing 24. And the tongue 30 can be moved diagonally upward in front of the vehicle without dropping off.

  In addition, when the occupant 18 grips at least one of the webbing 24 and the tongue 30, as shown in FIGS. 5 and 6A, the tension of the webbing 24 on the rear side portion of the first hook 50 is exerted. By being released, the head 44 is moved to the vehicle front side by the urging force of the installation spring 76, and the hook 48 of the head 44 is released from the inside of the fitting portion 72 of the tip tube 42 to the vehicle front side. The installation shaft 46 is inserted into the fitting portion 72 of the tip tube 42. For this reason, the second hook 52 is rotated inward in the vehicle width direction by the urging force, and the insertion port 54A is expanded inward in the vehicle width direction, so that the occupant 18 does not move the webbing 24 once to the vehicle front side. Can be easily removed from the hook 48, the occupant 18 can easily move the webbing 24 inward in the vehicle width direction, and the occupant 18 can easily attach the webbing 24.

  Further, when the occupant 18 removes the webbing 24 from the hook 48, the head 44 is moved to the initial position by the urging force of the installation spring 76, and the second hook 52 is rotated to the initial position by the urging force. For this reason, the head 44 can be automatically returned to the initial state.

  Further, the vehicle rear side portion of the first hook 50 is subjected to the tension of the webbing 24 and the second hook 52 is rotated against the urging force, whereby the insertion port 54A is reduced and the first hook 50 is also reduced. The rear portion of the vehicle 50 is released from the tension of the webbing 24 and the second hook 52 is rotated by the biasing force, so that the insertion port 54A is enlarged. For this reason, a structure can be simplified.

  In the present embodiment, the second hook 52 is rotatable with respect to the installation shaft 46. However, instead of this, or together with this, the first hook 50 may be rotatable (displaced) with respect to the installation shaft 46. In this case, the first hook 50 is biased with respect to the installation shaft 46 in a direction in which the front portion of the vehicle is directed outward in the vehicle width direction.

  In the first to third embodiments, when the webbing 24 is inserted into the insertion hole 54 of the hook 48, the vehicle front side portion of the first hook 50 is directed to the vehicle front side. The vehicle front side portion of the second hook 52 is directed to the vehicle front side. However, when the webbing 24 is inserted into the insertion hole 54 of the hook 48, the configuration in which the vehicle front side portion of the first hook 50 is inclined in the vehicle width direction inward as it goes forward of the vehicle, and the second hook 52 The vehicle front side portion may be at least one of a configuration in which the vehicle front side portion is inclined in the direction toward the vehicle width direction outer side as it goes toward the vehicle front. As a result, the insertion opening 54A of the hook 48 can be further reduced (even if the webbing 24 is sandwiched between the front end of the first hook 50 and the front end of the second hook 52, or the insertion opening 54A is closed). Good), the hook 48 can move the webbing 24 and the tongue 30 obliquely upward in front of the vehicle without further dropping.

  Furthermore, in the first to third embodiments, the webbing 24 is inserted into the insertion hole 54 of the hook 48 of the head 44 and hooked on the hook 48. However, at least one of the webbing 24 and the tongue 30 may be inserted into the insertion hole 54 of the hook 48 of the head 44 and hooked on the hook 48.

  Moreover, in the said 1st Embodiment-3rd Embodiment, the 1st winding apparatus 22 and the 2nd winding apparatus 28 were provided. However, only the first winding device 22 is provided by inserting the webbing 24 movably into the tongue 30 and providing a tongue stopper at an arbitrary position of the webbing 24 so that the tongue 30 does not move downward due to its own weight. May be.

  Furthermore, in the first to third embodiments, the seat 14 is used as a driver seat, but the seat 14 may be used as a passenger seat or a rear seat.

10 Webbing Movement Mechanism 18 Crew 24 Webbing 30 Tongue 32 Buckle 36 Reacher (Moving means)
44 head (hooking means)
50 First hook (displacement member)
52 Second hook (displacement member)
54A Insertion Port 60 Webbing Movement Mechanism 70 Webbing Movement Mechanism

Claims (2)

A webbing placed on the side of the occupant and subjected to tension;
Moving means for moving the webbing against at least one of the upper side and the front side of the occupant against tension;
A tongue provided on the webbing and engaged with a buckle to attach the webbing to an occupant;
In addition to being provided in the moving means, an insertion port is provided, and when the webbing is inserted into the insertion port expanded by an urging force , the webbing is hooked and moved, and the tension of the webbing is applied to the webbing. Hooking means for reducing the insertion slot;
Webbing movement mechanism with   The webbing moving mechanism according to claim 1, wherein the hooking means includes a displacement member that is displaced by applying a tension of the webbing to reduce the insertion port.

Images