JP2010162921A - Tongue stopper structure for seat belt device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To enable setting a locking position of a tongue at a plurality of locations without changing the position of a stopper structure locking falling and moving of the tongue passed through a seat belt webbing. <P>SOLUTION: The stopper structure is for locking falling and moving of the tongue 13 that is a mounting tool passed through the seat belt webbing 11 (hereinafter referred to as "webbing 11"). The stopper structure is configured to lock falling and moving of the tongue 13 by preventing passing through due to a projection shape of a plurality of locking projections 101 provided in the webbing 11 arranged in the belt length direction. In a free state, the tongue 13 is held in a forward tilting posture state engaging with the projection shape of the locking projection 101 by the gravity, whereas the locking state with respect to the locking projection 101 is released by lifting up operation of the tongue 13 to become the state allowing the projection shape of the locking projection 101 pass through. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a tongue stopper structure for a seat belt device. More specifically, a belt-like seat belt webbing that restrains the body of a seated occupant to a vehicle seat is provided with a stopper structure for locking the falling movement of a tongue that is an attachment device passed through the seat belt webbing. The present invention relates to a tongue stopper structure of an apparatus.

  Conventionally, in a seatbelt device for a vehicle seat, a stopper for attaching a tongue, which is an attachment tool passed through the seatbelt webbing, so as not to fall when the seatbelt webbing is not attached is provided. There is. Here, the following Patent Document 1 discloses a structure in which the above-described stopper is configured to be a detachable clip type that is attached to the seat belt webbing from the side.

  In this disclosure, the stopper is configured to be elastically hooked on the webbing by being inserted into the seat belt webbing from the side, and the locking position of the tongue is changed by the seated occupant changing the hooking position. It can be changed freely. Thereby, even when the locking position of the tongue described above is set to a high position that is relatively easy to reach in the seat belt webbing when not attached, when pulling the tongue and attaching it to the buckle, The stopper is retracted to a position where it does not interfere with the tongue and can be hung on the lower abdomen of the seated occupant while the seat belt is stretched without slackening.

JP 2003-276558 A

  However, in the prior art disclosed above, in order to change the locking position of the tongue, the stopper must be moved each time, and the operability is poor.

  The present invention has been devised to solve the above-described problems, and the problem to be solved by the present invention is to position the stopper structure that locks the falling movement of the tongue passed through the seat belt webbing. The object is to be able to set the locking positions of the tongues at a plurality of locations without being changed.

In order to solve the above problems, the tongue stopper structure of the seat belt apparatus of the present invention takes the following means.
First, according to a first aspect of the present invention, there is provided a stopper structure for engaging a belt-like seat belt webbing that restrains a seated occupant's body with a vehicle seat and a drop movement of a tongue serving as a wearing tool passed through the seat belt webbing. It is the tongue stopper structure of the provided seat belt apparatus. The stopper structure has a configuration in which the drop movement is locked by preventing the tongue from passing by the protruding shape of the locking member attached to the seat belt webbing. A plurality of locking members are provided side by side in the belt length direction on the seat belt webbing. When the tongue is in its free state, the tongue is held in a posture state in which the tongue is locked to the protruding shape of the locking member by gravity. However, the tongue is a locking member by moving and operating at least a part of the components of the tongue or seat belt webbing constituting the above-mentioned locking state in a direction different from the belt length direction of the seat belt webbing. The locked state with respect to is released, and the protruding shape of the locking member can be passed.

  According to the first aspect of the present invention, in the stopper structure for locking the tongue by the protruding shape of the locking member, at least a part of the structural member of the tongue or the seat belt webbing constituting the locked state is the length of the webbing. By performing a relative movement operation in a direction different from the direction, the locking state of the tongue with respect to the locking member is released, and the tongue can be allowed to pass in the falling movement direction. In this way, the stopper structure is configured such that the locking state is broken by the movement operation of the tongue or the seat belt webbing, so that the tongue can be locked at a plurality of stopper positions provided with the locking members, The locking positions of the tongue can be set at a plurality of positions without changing the position of the stopper structure.

  Next, according to a second aspect of the present invention, in the first aspect described above, the tongue is tilted downward so that it can be locked to the protruding shape of the locking member by the biasing action due to its own weight in the free state. It is held in a state. However, by raising the tongue from the tilted position, the opening shape of the through hole of the seat belt webbing formed in the tongue is in a state where it is widely oriented in the belt length direction of the seat belt webbing. Can pass through the protruding shape of the locking member.

  According to the second aspect of the present invention, the tongue is held in a locked state in the protruding shape of the locking member by the biasing action due to its own weight in the free state. However, the tongue is raised from its tilted posture, so that the opening shape of the through hole is widely directed to the locking member and can pass through the locking member. As described above, the state of being locked to the locking member can be released by the operation of raising the tongue, and a stopper structure that can easily perform the releasing operation can be realized.

  Next, according to a third aspect, in the first or second aspect described above, the protruding shape of the locking member is from the front side rather than from the back side applied to the body of the seated occupant of the seat belt webbing. The protrusion is formed so as to be larger.

  According to the third aspect of the invention, the protruding shape of the locking member is formed such that the protrusion from the front surface side is larger than the protrusion from the back surface side applied to the body of the seated occupant of the seat belt webbing. Therefore, it is possible to make it difficult for the locking member to feel a foreign object feeling given to the seated occupant when the seat belt webbing is worn. In addition, when the seated occupant grasps the tongue and pulls out the seat belt webbing, a tensile force is applied to the tongue by the urging force applied in the winding direction applied to the seat belt webbing. At this time, the seat imparts a tensile force to the tongue. Since the locking member does not protrude greatly from the back surface of the belt webbing, the tongue can be smoothly slid with respect to the seat belt webbing. In addition, the tongue slides with respect to the seat belt webbing while the back surface of the seat belt webbing is applied. Therefore, the locking member protruding from the front side of the seat belt webbing is relatively easily passed through the through hole of the tongue. You can make it.

1 is a perspective view illustrating a schematic configuration of a tongue stopper structure of a seat belt device according to Embodiment 1. FIG. It is a perspective view showing the wearing state of a seatbelt device. It is the III-III sectional view taken on the line of FIG. FIG. 4 is a cross-sectional view showing a state in which the tongue is passed through the lower side of the locking projection from the state of FIG. 3. It is a schematic block diagram of the tongue stopper structure of the seatbelt apparatus of Example 2. It is sectional drawing showing the state which passed the tongue from the state of FIG. 5 below the latching protrusion. It is a schematic block diagram of the tongue stopper structure of the seatbelt apparatus of Example 3. It is sectional drawing showing the state which passed the tongue from the state of FIG. 7 to the downward side of the latching curved board. It is a schematic block diagram of the tongue stopper structure of the seatbelt apparatus of Example 4. FIG. 10 is a cross-sectional view showing a state in which the tongue is passed from the state of FIG. 9 to the lower side of the locking fin. It is a schematic block diagram of the tongue stopper structure of the seatbelt apparatus of Example 5. FIG. 12 is a cross-sectional view illustrating a state where the tongue is passed through the lower side of the locking protrusion from the state of FIG. 11. It is sectional drawing showing a mode that the latching protrusion passed the tongue groove | channel. It is a schematic block diagram of the tongue stopper structure of the seatbelt apparatus of Example 6. It is sectional drawing showing the state which passed the tongue from the state of FIG. 14 below the latching protrusion. FIG. 10 is a schematic configuration diagram of a tongue stopper structure of a seat belt device according to a seventh embodiment. It is sectional drawing showing the state which passed the tongue from the state of FIG. 16 to the downward side of a leaf | plate spring. It is a schematic block diagram of the tongue stopper structure of the seatbelt apparatus of Example 8. It is sectional drawing showing the state which passed the tongue from the state of FIG. 18 to the downward side of the latching bag. FIG. 10 is a schematic configuration diagram of a tongue stopper structure of a seat belt device according to a ninth embodiment. It is sectional drawing showing the state which passed the tongue from the state of FIG. 20 below the latching protrusion. It is a schematic block diagram of the tongue stopper structure of the seatbelt apparatus of Example 10. FIG. 12 is a schematic configuration diagram of a tongue stopper structure of a seat belt device according to an eleventh embodiment. FIG. 16 is a schematic configuration diagram of a tongue stopper structure of a seat belt device of Example 12. It is a schematic block diagram of the tongue stopper structure of the seatbelt apparatus shown as a modification. It is a schematic block diagram of the tongue stopper structure of the seatbelt apparatus shown as another modification.

  EMBODIMENT OF THE INVENTION Below, the form for implementing this invention is demonstrated using drawing.

  First, the tongue stopper structure of the seat belt device of the first embodiment will be described with reference to FIGS. The tongue stopper structure of the seat belt device of the present embodiment is provided in a seat belt device 10 provided as an occupant restraint device for restraining the body of a seated occupant P on a vehicle seat 1 as shown in FIG. The mounting bracket (the tongue 13) passed through the belt-shaped seat belt webbing 11 (hereinafter, abbreviated as the webbing 11) serving as a restraining belt is placed at a certain height in the webbing 11 when the mounting bracket is not mounted. It functions as a stopper for locking.

  Here, the vehicle seat 1 is arranged as a second row seat behind the driver's seat of the vehicle, and includes a seat back 2 that serves as a backrest, a seat cushion 3 that serves as a seating portion, and a headrest 4 that serves as a headrest. It is comprised. The above-described seat belt device 10 is passed through a retractor (not shown) serving as a winding device for the webbing 11, a slip joint 12 for guiding the routing path of the webbing 11 fed out from the retractor, and the webbing 11 described above. A tongue 13 serving as a mounting bracket, a buckle 14 fixedly installed on the side of the seat cushion 3 as a mounting tool for the tongue 13, and a protruding shape for locking the tongue 13 to the webbing 11. And a stop projection 101. Here, the locking projection 101 corresponds to the locking member of the present invention.

  Specifically, the tongue 13 is formed by a convex-shaped metal plate, and a square hole is formed in a mountain-shaped portion on the tip side of the metal plate, and the tongue 13 is attached by being inserted into the buckle 14. Part 13A is formed. A long hole 13B serving as a through hole for the webbing 11 is formed through the base portion of the tongue 13 so that the entire base portion is formed as a resin portion 13C covered with resin.

  The webbing 11 is formed by knitting a polyester fiber having excellent tensile strength into a belt shape, and is wound around the above-described retractor (not shown). The end of the webbing 11 drawn out from the retractor is passed from the rear side to the front side with respect to the slip joint 12 provided at the shoulder portion on the outer side of the seat back 2, and from there, the seat back 2 Is extended to the lower side through the backrest surface of the seat cushion 3 and fastened and fixed to the side portion on the outer side of the seat cushion 3.

  The above-described webbing 11 is always in a state of receiving a tensile force by being biased in the direction of being wound by a retractor (not shown), and is always a tension applied with a certain tension by the tensile force. The arrangement state is maintained. Then, as shown in FIG. 2, the webbing 11 arranged as described above has the seat occupant P gripping the resin portion 13C of the tongue 13 passed through the webbing 11 and pulling it toward the inner side. 14, it is put on the chest or waist of the seated occupant P.

  As a result, the webbing 11 is pressed against the chest and waist of the seated occupant P by the tension action wound by the retractor (not shown), and the body of the seated occupant P is restrained to the seat back 2. It becomes. Here, as shown in FIG. 2, the above-described webbing 11 is divided into a shoulder webbing part 11A and a lap webbing part 11B according to the difference in the part applied to the body of the seated occupant P.

  The former shoulder webbing portion 11A is a region portion that is obliquely applied to the chest of the seated occupant P from the shoulder to the waist, and is a region defined as a length region from the portion extended from the slip joint 12 to the turn-back portion by the tongue 13 Part. The latter lap webbing portion 11B is a region portion that is applied so as to cross the waist of the seated occupant P, and is a region portion that is defined as a length region from a turning position by the tongue 13 to a fixed end portion on the lower end side.

  Therefore, as can be seen with reference to FIG. 1, the latter lap webbing portion 11 </ b> B has the tongue 13 engaged when, for example, the locking position of the tongue 13 by the locking projection 101 is set at a high position of the webbing 11. When the bulging shape of the stop protrusion 101 prevents the bulging shape from moving downward, the length between the fixed end portion on the lower end side of the webbing 11 and the tongue 13 is increased, and the lap webbing is increased. As shown in FIG. 2, there is a situation where the portion 11B is not applied to the waist while being applied to the waist, that is, the lap webbing portion 11B is loosened.

  However, in the configuration of the present embodiment, as shown in FIG. 1, a plurality of locking projections 101 are arranged in the band width direction with respect to the webbing 11, and the tongue 13 is connected to one of the locking projections 101. It can be made to lock with respect to, or it can be made to pass and move by releasing the locked state. Thus, for example, even when the tongue 13 is locked at a high position on the webbing 11 when the seat belt device 10 is not attached, when the tongue 13 is attached to the buckle 14, The wrap webbing portion 11B is put on the waist of the seated occupant P by passing it through a region below the locking projection 101 that is locked.

  Hereinafter, the stopper structure of the tongue 13 by each locking projection 101 described above will be specifically described. Here, as shown in FIG. 3, each locking projection 101 is formed by being integrally knitted into the webbing 11 so as to protrude gently from both the front and back surfaces of the webbing 11. These locking projections 101 are configured to bulge out from the webbing 11 and come into contact with the resin portion 13C of the tongue 13 from the lower side to hook the tongue 13 and prevent the tongue 13 from falling.

  Specifically, each of the locking projections 101 described above has a resin portion 13 </ b> C that forms a long hole 13 </ b> B of the tongue 13 by a forward tilting rotational force that causes the mounting portion 13 </ b> A to hang downward by the gravity of the tongue 13. The inner peripheral surface is hooked on a protruding shape that protrudes from the back surface side of the webbing 11. At this time, each of the locking projections 101 keeps the posture of the tongue 13 in the forward inclined posture state by causing the tongue 13 to ride on the protruding shape protruding from the surface side of the webbing 11. The tongue 13 can be held in a state of being locked with a relatively large force to the protruding shape protruding from the back surface side of the webbing 11 so that a force in the forward rotation direction due to the gravity action is applied.

  Here, each of the locking projections 101 described above is such that the protruding shape thereof hits the body of the seated occupant P rather than the protrusion from the back surface (see FIG. 2) applied to the body of the seated occupant P of the webbing 11. It is formed in a shape in which the protrusion from the front surface side is larger. As a result, it is possible to make it difficult for the locking projections 101 to feel a foreign object feeling to the seated occupant P when the webbing 11 is mounted.

  Further, when the seated occupant P grasps the tongue 13 and pulls out the webbing 11, a tensile force is applied to the tongue 13 by the urging force applied in the winding direction applied to the webbing 11. At this time, the tensile force is applied to the tongue 13. Since the locking projections 101 are formed so as to protrude gently from the back side of the webbing 11 to be applied, the tongue 13 can be smoothly slid with respect to the webbing 11.

  Further, the tongue 13 is slid with respect to the webbing 11 in a state where the back surface of the webbing 11 is applied by the above-described tensile force, so that the locking projection 101 protruding from the front side of the webbing 11 is provided with the long hole of the tongue 13. 13B can be passed relatively easily. The tongue 13 having the above-described configuration is normally held in a forward inclined posture state in which the mounting portion 13A is hung downward by a gravitational action as a state of being hooked on one of the locking protrusions 101. It has become.

  However, as shown in FIG. 4, the tongue 13 has a posture in which the long hole 13 </ b> B is directed straight in the dropping movement direction in which the webbing 11 extends by raising the mounting portion 13 </ b> A hanging downward as described above. By doing so, the long hole 13B can be passed through the locking projection 101. Specifically, the tongue 13 is in a state in which the opening shape of the long hole 13B is oriented most widely with respect to the locking projection 101 by adopting a posture in which the long hole 13B is directed straight in the falling movement direction. It will be in the state which can pass the stop protrusion 101 in the hole of the long hole 13B.

  Therefore, by dropping the tongue 13 downward from this state, the locking projection 101 can be received into the hole of the long hole 13B, and the tongue 13 can be passed to the lower side of the locking projection 101. . Then, after passing the tongue 13 to the lower region of the locking projection 101 and then releasing the hand from the tongue 13, the tongue 13 again becomes a forward inclined posture that hangs downward by the gravitational action, and below that It is locked by a locking protrusion 101 arranged on the side.

  Therefore, as shown in FIG. 2, the tongue 13 is engaged in each case where a child seat is attached to the vehicle seat 1, a small person of a physique is seated, or a person of a large physique is seated. The wrap webbing portion 11B can be applied while being stretched against the waist of the seated occupant P, the child seat, and the like because the wrap webbing portion 11B can be freely moved to the optimum through position without being held at the locking position of the stop protrusion 101.

  As shown in FIG. 4, when the tongue 13 that has passed through the lower side of the locking projection 101 is returned to the region above the locking projection 101, the tongue 13 is lifted upward. Just operate. As a result, the tongue 13 is directed to the direction in which the locking projection 101 can be naturally received in the hole of the elongated hole 13B by the inclined surface shape guide of the locking projection 101, and the tongue 13 is locked as it is. It is possible to pass through the upper region of the protrusion 101.

  As described above, according to the tongue stopper structure of the seat belt device of the present embodiment, the stopper structure that locks the tongue 13 by the protruding shape of the locking protrusion 101 has the tongue 13 that is inclined forward by the action of gravity. By operating to raise (relatively moving in a direction different from the length direction of the webbing 11), the locking state of the tongue 13 with respect to the locking projection 101 is released, and the falling movement direction of the tongue 13 It will be in the state which can permit passage movement to.

  As described above, since the stopper structure is configured such that the locking state is broken by the movement operation of the tongue 13, the tongue 13 can be locked at a plurality of stopper positions provided with the locking projections 101. The locking positions of the tongue 13 can be set at a plurality of positions without changing the position of the structure.

  Next, the tongue stopper structure of the seatbelt device according to the second embodiment will be described with reference to FIGS. In the present embodiment, portions having substantially the same configuration and operational effects as those of the tongue stopper structure of the seat belt apparatus shown in the first embodiment are described with the same reference numerals. Will be omitted and the different parts will be described in detail.

  In the tongue stopper structure of the seat belt device of the present embodiment, as shown in FIG. 5, the hook 13E provided on the tongue 13 is pulled on each locking projection 102 (locking member) provided on the webbing 11. By being hung, the falling movement of the tongue 13 is locked. Specifically, the hook 13 </ b> E enters the hook groove 102 </ b> A formed in the locking protrusion 102 so as to be locked with the locking protrusion 102, and is difficult to slip off the locking protrusion 102.

  Further, the hook 13E is formed to extend downward from a portion of the tongue 13 that is inclined forward by the gravitational action, that is, a portion on the left side of the elongated hole 13B in the drawing. As a result, the hook 13E is brought closer to the webbing 11 due to the gravitational action of the tongue 13 in the forward tilted posture, and is configured to be more difficult to slip off from the locking projection 102. ing.

  As shown in FIG. 6, the tongue 13 having the above-described configuration has a posture in which the long hole 13 </ b> B is straightly directed in the dropping movement direction in which the webbing 11 extends by raising the mounting portion 13 </ b> A hanging downward. As a result, the long hole 13B can be passed through the locking projection 102. Therefore, the tongue 13 can be passed below the locking projection 102 by dropping and moving the tongue 13 downward from this state.

  Further, when the tongue 13 passed through the lower side of the locking projection 102 is returned to the region above the locking projection 102, this time, it is pushed up as it is without considering the posture state of the tongue 13. You just have to operate. As a result, the tongue 13 is naturally directed to the direction in which the locking protrusion 102 can be received in the hole of the long hole 13B by the guide of the inclined surface 102B of the locking protrusion 102. It can be passed to the upper region of the protrusion 102.

  Subsequently, the tongue stopper structure of the seat belt device of Example 3 will be described with reference to FIGS. In the present embodiment, portions having substantially the same configuration and operational effects as those of the tongue stopper structure of the seat belt apparatus shown in the first embodiment are described with the same reference numerals. Will be omitted and the different parts will be described in detail.

  In the tongue stopper structure of the seat belt device of the present embodiment, as shown in FIG. 7, the locking member that locks the falling movement of the tongue 13 warps in the direction opposite to the gravity direction attached to the webbing 11. It is formed by a bent curved plate 103 having a different shape. The locking bent plate 103 is attached to the webbing 11 by a fastener 103A, and due to the warped shape, the tongue 13 is brought into contact with the resin portion 13C of the tongue 13 from below and the tongue 13 is dropped. It is configured to prevent movement.

  As a result, the tongue 13 is normally held in a forward inclined posture state in which the mounting portion 13A is hung downward by the gravitational action as a state of being hooked on the locking curved plate 103. Yes. However, the tongue 13 is formed by curving the webbing 11 according to the warped shape of the locking curved plate 103 and overlapping the webbing 11 with the warped shape of the locking curved plate 103 as shown in FIG. The long hole 13B can be passed through the locking curved plate 103.

  Specifically, as shown in FIG. 7, the tongue 13 cannot normally pass through the locking curved plate 103 due to the opening between the webbing 11 and the curved curved locking plate 103. ing. However, as shown in FIG. 8, when the webbing 11 is bent and overlapped on the locking curved plate 103, the tongue 13 closes the opening between the webbing 11 and the locking curved plate 103, so that the tongue 13 is long. The hole 13B can be passed through the locking curved plate 103.

  Therefore, from this state, by dropping and moving the tongue 13 downward, the locking curved plate 103 is received into the hole of the elongated hole 13B, and the tongue 13 is passed through the downward side of the locking curved plate 103. Can do. Further, when the tongue 13 (the phantom line state in FIG. 7) passed through the lower side of the locking curved plate 103 is returned to the region on the upper side of the locking curved plate 103, this time, the tongue 13 is moved upward as it is. It may be operated so as to push it upward. Thus, as can be seen with reference to FIG. 8, the tongue 13 naturally receives the locking curved plate 103 into the hole of the long hole 13B by guiding the inclined surface of the locking curved plate 103, and the long hole 13B. While the webbing 11 is drawn toward the locking curved plate 103 by the guide of the inner peripheral surface shape of 13B, it passes through the upper region of the locking curved plate 103.

  As described above, according to the configuration of the present embodiment, when the tongue 13 is passed through the lower region of the locking curved plate 103, the webbing 11 is curved in accordance with the warped shape of the locking curved plate 103. By overlapping, the substantial protruding amount of the locking curved plate 103 from the webbing 11 is suppressed, and the locking function of the tongue 13 does not work. Thereby, the tongue 13 can be passed below the locking curved plate 103. Then, when returning to the initial position before passing the tongue 13 passed through the lower region of the locking curved plate 103, the webbing 11 passed through the tongue 13 is moved to the locking curve by moving the tongue 13 as it is. The guide of the warped shape of the plate 103 can naturally overlap the warped shape of the locking curved plate 103, and the tongue 13 can be passed upward.

  Next, the tongue stopper structure of the seatbelt device according to the fourth embodiment will be described with reference to FIGS. In the present embodiment, portions having substantially the same configuration and operational effects as those of the tongue stopper structure of the seat belt apparatus shown in the first embodiment are described with the same reference numerals. Will be omitted and the different parts will be described in detail.

  In the tongue stopper structure of the seat belt device of this embodiment, as shown in FIG. 9, the locking member for locking the dropping movement of the tongue 13 is integrated with the webbing 11 so as to protrude from the back surface of the webbing 11. It is formed by a locking fin 104 formed by knitting. The locking fin 104 is formed in a shape that jumps up from the back surface of the webbing 11 in the direction opposite to the gravitational direction. The protruding shape abuts the resin portion 13C of the tongue 13 from the lower side to pull the tongue 13. It is configured to prevent the tongue 13 from dropping and moving.

  As a result, the tongue 13 is normally held in a forward inclined posture state in which the mounting portion 13A is hung downward by the gravitational action as a state of being hooked on the locking fin 104. . However, as shown in FIG. 10, the tongue 13 has a posture in which the long hole 13 </ b> B is straightly directed in the falling movement direction in which the webbing 11 extends by raising the mounting portion 13 </ b> A hanging downward as described above. By doing so, the long hole 13B can be passed through the locking fin 104.

  Specifically, the tongue 13 is in a state in which the opening shape of the long hole 13B is oriented most widely with respect to the locking fin 104 by setting the long hole 13B to be in a straight line in the falling movement direction. The locking fin 104 can be received. Therefore, by moving the tongue 13 downward from this state, the locking fin 104 is received into the hole of the long hole 13B while pushing away the flexible portion on the distal end side of the locking fin 104. Thus, the tongue 13 can be passed below the locking fin 104.

  Note that when the tongue 13 is returned to the region above the locking fin 104, this time, it may be operated so as to push it upward as it is without considering the posture state of the tongue 13. As a result, the tongue 13 is naturally directed to the direction in which the locking fin 104 can be received in the hole of the elongated hole 13B by the jumping shape guide of the locking fin 104. 104 to the upper region.

  Subsequently, the tongue stopper structure of the seat belt device of the fifth embodiment will be described with reference to FIGS. In the present embodiment, portions having substantially the same configuration and operational effects as those of the tongue stopper structure of the seat belt apparatus shown in the first embodiment are described with the same reference numerals. Will be omitted and the different parts will be described in detail.

  In the tongue stopper structure of the seat belt device of the present embodiment, as shown in FIG. 11, the locking member for locking the dropping movement of the tongue 13 is formed by the locking protrusion 105 having an elliptical shape. Yes. The locking projection 105 is arranged such that the longitudinal direction of the oval is obliquely inclined by about 45 degrees with respect to the longitudinal direction of the webbing 11, and the locking portion 105 locks the resin portion 13 </ b> C of the tongue 13. The tongue 13 is brought into contact with the surface Ca from the lower side, and the tongue 13 is prevented from falling.

  However, as shown in FIG. 12, the tongue 13 is a state in which the webbing 11 on the lower side of the tongue 13 is bent back so that the elliptical longitudinal direction of the locking projection 105 faces the longitudinal direction of the webbing 11. By doing so, it becomes possible to pass the locking projection 105 through the through groove 13D formed continuously to the long hole 13B. Here, returning to FIG. 11, the through groove 13 </ b> D is formed to be recessed in the back side portion of the resin portion 13 </ b> C of the tongue 13, and the opening width of the opening facing the long hole 13 </ b> B on the lower side in the figure is webbing. 11 is formed with an opening size that can receive the locking protrusion 105 oriented in the longitudinal direction.

  The through-groove 13D is formed in a hole shape that gradually widens the opening from the opening facing the elongated hole 13B on the lower side in the drawing toward the opening on the upper side in the drawing. As shown in FIG. 13, the opening size of the opening on the upper side in the figure is such that the opening width that can receive the locking protrusion 105 when the locking protrusion 105 is in an initial oblique orientation. It has become. Therefore, as shown in FIG. 12, the tongue 13 is passed through the lower region of the locking projection 105 by bending the webbing 11 back as described above and passing the locking projection 105 through the through groove 13 </ b> D of the tongue 13. Can do.

  When the tongue 13 (the phantom line state in FIG. 11) passed through the lower region of the locking projection 105 is returned to the upper region of the locking projection 105 as described above, this time, the tongue 13 is moved upward as it is. It may be operated so as to push it upward. As a result, as shown in FIG. 13, the locking protrusion 105 in the obliquely oriented posture is received inside the through groove 13D of the tongue 13 and forms an inclined surface having a widened shape of the through groove 13D. It will be in the state contact | abutted with Da.

  From this state, the tongue 13 is further pushed upward, so that the locking projection 105 moves along the slope shape of the inclined surface Da and pushes toward the lower opening where the through groove 13D becomes narrower. It is pushed out from the narrowed opening with rotation. As a result, the locking projection 105 is returned to the original obliquely oriented state, and is in a state where the falling movement of the tongue 13 can be locked.

  As described above, according to the configuration of the present embodiment, the stopper structure that locks the tongue 13 with the protruding shape of the locking protrusion 105 moves the webbing 11 in a direction different from the length direction (bending operation). Then, by switching the locking projection 105 to a posture that allows the locking projection 105 to pass through the through groove 13D of the tongue 13, the locking state of the tongue 13 with respect to the locking projection 105 is released, and the tongue 13 moves in the direction of falling movement. Can be allowed.

  The stopper structure is a one-way structure in which the locking function of the tongue 13 by the locking protrusion 105 does not work when returning to the initial position before passing the tongue 13 passed below the locking protrusion 105. . Thereby, the movement amount of the release operation for passing the tongue 13 to the lower side of the locking projection 105 is large, and the movement amount of the release operation for passing the tongue 13 to the upper side of the locking projection 105 is reduced. In this way, the movement amount of the release operation for returning the tongue 13 to the upper region of the locking projection 105 that is a relatively frequently used region is small, and the locking projection 105 that is a relatively less frequently used region is moved. The use of the tongue 13 can be improved by increasing the movement amount of the release operation for moving to the lower region.

  Next, the tongue stopper structure of the seatbelt device according to the sixth embodiment will be described with reference to FIGS. In the present embodiment, portions having substantially the same configuration and operational effects as those of the tongue stopper structure of the seat belt apparatus shown in the first embodiment are described with the same reference numerals. Will be omitted and the different parts will be described in detail.

  In the tongue stopper structure of the seat belt device of the present embodiment, as shown in FIG. 14, the locking members for locking the dropping movement of the tongue 13 are provided so as to protrude from the surface portions on both the front and back sides of the webbing 11. It is formed as a rubber locking projection 106. The locking projection 106 is formed so that the protrusion from the front surface side is larger than the back surface side of the webbing 11, and is projected larger than the hole diameter of the long hole 13 </ b> B of the tongue 13. In this configuration, the tongue 13 is prevented from moving by being prevented from passing therethrough.

  The above-described locking projection 106 is normally in a state in which even if the tongue 13 is pressed by its own weight due to its elastic force, the protruding shape prevents the tongue 13 from passing through and locks the falling movement. Is supposed to maintain. However, as shown in FIG. 15, the locking protrusion 106 is pushed down by the human force against the elastic force, so that the locking protrusion 106 is formed by the inner peripheral surface of the long hole 13 </ b> B of the tongue 13. By being pressed inwardly, it is compressed and deformed in such a manner that it is elastically constricted, and the passage of the tongue 13 is allowed along with this compression deformation.

  Here, referring back to FIG. 14, the above-described locking projection 106 is formed such that the upper surface portion that locks the tongue 13 is an inclined surface (upper inclined surface 106 </ b> A) that hangs downward. . Further, the tongue 13 is warped in such a way that the inner peripheral surface of the long hole 13B that receives the upper inclined surface 106A of the locking projection 106 described above is curved so that the hole shape expands toward the upper and lower openings in the figure. It is formed in a different shape. Thereby, as shown in FIG. 15, the above-described locking protrusion 106 is perpendicular to the pressed direction when the upper inclined surface 106 </ b> A receives a force pressed downward from the tongue 13. In response to the pressing force in the inner direction, it is compressed and deformed in a constricted form allowing the tongue 13 to pass through.

  Therefore, by performing a moving operation that pushes the tongue 13 down as it is, the tongue 13 can be passed through the locking projection 106, and the tongue 13 can be moved to a region below the locking projection 106. Further, when the tongue 13 is returned to the region above the locking projection 106, the tongue 13 may be operated in the same way as it is pushed upward. Here, the surface portion on the lower side from the protruding shape portion of the locking projection 106 described above is formed as an inclined surface (lower inclined surface 106B) that is inclined so that the protruding shape gradually attenuates. The lower inclined surface 106B is inclined more gently than the above-described upper inclined surface 106A.

  As a result, the force required to press the tongue 13 upward and pass it through the locking projection 106 is used to press the tongue 13 downward and pass it under the locking projection 106. It is lighter than the necessary pressing force, and the operation of returning the tongue 13 to the position above the locking projection 106 can be performed more easily than the operation of dropping the tongue 13 downward.

  As described above, according to the configuration of the present embodiment, since the locking projection 106 is formed of rubber that is an elastic body, when the seat belt device 10 is worn, the locking projection 106 with respect to the body of the seated passenger P It can soften the hit and make it difficult to feel a foreign object.

  Next, the tongue stopper structure of the seat belt device of Example 7 will be described with reference to FIGS. In the present embodiment, portions having substantially the same configuration and operational effects as those of the tongue stopper structure of the seat belt apparatus shown in the first embodiment are described with the same reference numerals. Will be omitted and the different parts will be described in detail.

  In the tongue stopper structure of the seat belt device of the present embodiment, as shown in FIG. 16, the locking member for locking the falling movement of the tongue 13 is such that the short plate portion 107A and the long plate portion 107B are tongues. It is formed by a leaf spring 107 formed in an open shape. The leaf spring 107 is configured to lock the drop movement of the tongue 13 in a state where the tongue 13 is normally brought into contact with the tip of the short plate portion 107A and the long plate portion 107B.

  Then, from this state, as shown in FIG. 17, the short plate portion 107 </ b> A and the long plate portion 107 </ b> B are elastically constricted and deformed so as to be sandwiched between fingers, whereby the leaf spring 107 has the length of the tongue 13. It will be in the state which can pass the hole 13B. Accordingly, the tongue 13 can be passed through the lower region of the leaf spring 107 by moving the tongue 13 downward from this state.

  Then, as shown in FIG. 16, when the tongue 13 (imaginary line state) passed through the lower side of the leaf spring 107 as described above is returned to the region on the upper side of the leaf spring 107, This time, the tongue 13 may be operated so as to be pushed upward as it is. As a result, the short plate portion 107A and the long plate portion 107B, which are in the shape of a tongue, enter the long hole 13B of the tongue 13 and are elastically constricted. An operation of returning to the upper region 107 can be performed.

  Next, the tongue stopper structure of the seatbelt device according to the eighth embodiment will be described with reference to FIGS. In the present embodiment, portions having substantially the same configuration and operational effects as those of the tongue stopper structure of the seat belt apparatus shown in the first embodiment are described with the same reference numerals. Will be omitted and the different parts will be described in detail.

  In the tongue stopper structure of the seat belt device of the present embodiment, as shown in FIG. 18, the locking member for locking the dropping movement of the tongue 13 is the locking bag filled with the gel-like viscous fluid 108A. 108. The locking bag 108 is configured to lock the drop movement of the tongue 13 with the tongue 13 in contact with the upper surface portion at all times. Then, from this state, as shown in FIG. 19, by applying a pressing force that pushes the tongue 13 downward, the locking bag 108 changes its shape while flowing the viscous fluid 108A inside, and the tongue 13 It becomes the shape which can let the long hole 13B pass.

  Therefore, the tongue 13 can be passed through the region of the lower side of the locking bag 108 by pushing down the tongue 13 as it is. In this embodiment, as shown in FIG. 18, the tongue 13 (imaginary line state) passed through the lower side of the locking bag 108 as described above is transferred to the upper region of the locking bag 108. In the case of returning, it is sufficient to operate the tongue 13 as it is in the same way as above. As a result, the locking bag 108 can be changed to a shape that allows the elongated hole 13B of the tongue 13 to pass through in the same manner as shown in FIG. The operation to return to can be performed.

  Next, the tongue stopper structure of the seatbelt device according to the ninth embodiment will be described with reference to FIGS. In the present embodiment, portions having substantially the same configuration and operational effects as those of the tongue stopper structure of the seat belt apparatus shown in the first embodiment are described with the same reference numerals. Will be omitted and the different parts will be described in detail.

  In the tongue stopper structure of the seat belt device of the present embodiment, as shown in FIG. 20, the locking member that locks the falling movement of the tongue 13 is a gentle bulge like a meteorite attached to the back surface of the webbing 11. It is formed by a disk-shaped locking projection 109 having a certain shape. The locking protrusion 109 is made of resin, and its bulging shape prevents the tongue 13 from passing through the long hole 13B, thereby locking the tongue 13 from falling.

  Accordingly, the tongue 13 is normally held in a forward inclined posture state in which the mounting portion 13A is hung downward by the gravitational action as being hooked on the locking projection 109. . However, the tongue 13 is in a state in which the long hole 13B can be passed through the locking projection 109 by performing a moving operation of shifting the webbing 11 in the long hole 13B in the band width direction as shown in FIG. .

  Specifically, the tongue 13 is formed with a through portion Bb that partially expands a part of the shape of the long hole 13B so that the locking protrusion 109 can be passed in the falling movement direction. As shown in FIG. 20, the through portion Bb is in an arrangement relationship in which the position in the band width direction is shifted from the locking protrusion 109 at all times before the webbing 11 is shifted in the band width direction. Then, when the webbing 11 is moved in the band width direction (rightward in the drawing) from this state, the threading portion Bb is moved in the band width direction as shown in the phantom line state of FIG. The position is adjusted.

  As a result, the tongue 13 can pass the locking projection 109 in the band length direction with respect to the passing portion Bb, and the locking state by the locking projection 109 has been released. It will be in the state which can be passed below the protrusion 109. Here, returning to FIG. 20, the long hole 13 </ b> B of the tongue 13 described above is formed with a relief portion Ba that is bent and extended from the end on the right side of the figure.

  Thereby, the webbing 11 can be moved in the band width direction (right direction in the figure) while passing the webbing 11 through the escape portion Ba, and the moving operation for shifting the webbing 11 in the band width direction is easier. It can be done. Then, as shown in FIG. 21, when returning the tongue 13 passed through the lower side of the locking projection 109 to the region above the locking projection 109, the webbing 11 is similarly moved to the tongue 13. The tongue 13 may be operated so as to be lifted upward by shifting in the band width direction so that the locking projection 109 can be passed through the through portion Bb.

  Thereby, the tongue 13 can be passed through the upper region of the locking projection 109. Note that the above-described locking protrusion 109 may be provided so as to protrude from the surface of the webbing 11. In this case, the through portion Bb may be formed so as to be recessed with respect to the long hole 13B on the lower side instead of the upper side in the figure. Thereby, the latching protrusion 109 can be arranged so as not to hit the body of the seated occupant P.

  Next, the tongue stopper structure of the seat belt device of Example 10 will be described with reference to FIG. In the present embodiment, portions having substantially the same configuration and operational effects as those of the tongue stopper structure of the seat belt apparatus shown in the first embodiment are described with the same reference numerals. Will be omitted and the different parts will be described in detail.

  In the tongue stopper structure of the seat belt device of the present embodiment, the passage portion Bb of the tongue 13 that allows the locking projection 110 (locking member) provided on the webbing 11 to pass in the band length direction is the locking projection 110. And is formed at a position matching the band width direction. However, the tongue 13 is provided with a slide plate 13D that blocks the hole shape widened by the above-described through portion Bb and prevents the locking protrusion 110 from moving through the long hole 13B.

  The slide plate 13D is provided so as to be slidable in the band width direction (the left-right direction in the figure) with respect to the tongue 13. The slide plate 13D is exposed to the through portion Bb by the slide to block the through portion Bb. The state can be switched between a state where the part Bb is retracted and the through part Bb is opened. In this way, the stopper structure that can be switched so that the locking projection 110 is made to function or not to function even by the structure in which the tongue 13 is provided with the slide plate 13D that closes or opens the through portion Bb. Can be configured.

  Next, the tongue stopper structure of the seatbelt device of Example 11 will be described with reference to FIG. In the present embodiment, portions having substantially the same configuration and operational effects as those of the tongue stopper structure of the seat belt apparatus shown in the first embodiment are described with the same reference numerals. Will be omitted and the different parts will be described in detail.

  In the tongue stopper structure of the seat belt device of the present embodiment, the locking member that locks the falling movement of the tongue 13 is provided so as to protrude from the back surface side with respect to the webbing 11 and rotate around the support shaft 111A. The locking piece 111 is formed. The locking piece 111 is formed of a disc-shaped resin member having a gentle swelling such as a meteorite, and can be rotated with respect to the webbing 11 by a support shaft 111A at an eccentric position deviated from the center of the disc shape. It is connected to the shaft.

  Thereby, the locking piece 111 is in a state in which the arrangement in the band width direction is shifted with respect to the through part Bb due to the rotational movement (solid line state) and the arrangement in the band width direction with respect to the through part Bb. (Virtual line state). Here, the above-mentioned locking piece 111 has a configuration in which a certain sliding resistance is given to its rotational movement, and the arrangement in the band width direction with the through portion Bb is shifted (solid line state). Then, it is set as the state which can be made to latch the fall movement of the tongue 13 with the bulging shape.

  Then, by rotating and moving the above-described locking piece 111 to match the arrangement in the band width direction with the through portion Bb (in a phantom line state), the tongue 13 passes the locking piece 111 into the through portion Bb. It will be in a state that can be. As described above, the locking piece 111 can be made to function or function even by a configuration in which the locking piece 111 is provided so as to be eccentrically rotatable and can be switched between a state where it can be passed through the through portion Bb and a state where it cannot be passed. It is possible to configure a stopper structure that can be switched so as not to exist.

  Note that the locking piece 111 described above may be provided so as to protrude from the surface of the webbing 11. In this case, the through portion Bb may be formed so as to be recessed with respect to the long hole 13B on the lower side instead of the upper side in the figure. Accordingly, the locking piece 111 can be arranged so as not to hit the body of the seated occupant P.

  Next, the tongue stopper structure of the seat belt device of Example 12 will be described with reference to FIG. In the present embodiment, portions having substantially the same configuration and operational effects as those of the tongue stopper structure of the seat belt apparatus shown in the first embodiment are described with the same reference numerals. Will be omitted and the different parts will be described in detail.

  In the tongue stopper structure of the seat belt device of the present embodiment, the locking member for locking the dropping movement of the tongue 13 is formed by the locking protrusion 112 having a shape swelled in an elliptical shape. The locking projection 112 is arranged such that the elliptical longitudinal direction thereof is obliquely inclined by about 45 degrees with respect to the longitudinal direction of the webbing 11, and the bulging shape of the end portion on the oblique upper side is always It is arranged at a position deviating in the band width direction with respect to the through portion Bb formed in the tongue 13.

  As a result, the tongue 13 is normally held in a state in which its falling movement is locked by the bulging shape (see the imaginary line state) of the obliquely upper end of the locking protrusion 112. ing. In this state, the tongue 13 bends the webbing 11 and the longitudinal direction of the locking projection 112 is directed into the shape of the passing portion Bb as shown in FIG. It will be in a state where it can pass through Bb.

  Therefore, the tongue 13 can be passed through the lower region of the locking projection 112 by bending the webbing 11 back and passing the locking projection 112 through the passage Bb of the tongue 13 as described above. As described above, the locking protrusion 112 is formed into a long shape and can be switched to a state in which the locking protrusion 112 can be passed through the through portion Bb by an operation of turning the webbing 11 back. It is possible to configure a stopper structure that can be switched so as not to exist.

  As mentioned above, although embodiment of this invention was described using the some Example, this invention can be implemented with various forms other than the said Example. For example, in the ninth embodiment, as shown in FIGS. 20 to 21, a relief portion Ba capable of receiving movement of the webbing 11 in the band width direction is formed in communication with the elongated hole 13 </ b> B of the tongue 13. However, as shown in FIG. 25, a configuration without a relief (Ba) may be used. However, in this case, since the webbing 11 is forcibly shifted in the band width direction in the elongated hole 13B, it should be noted that the webbing 11 is wrinkled and difficult to move.

  Further, as shown in FIG. 26, the relief portion Ba may be formed to extend straight and extend in the band width direction in which the long hole 13B extends. In addition, a hook 13F for restricting the webbing 11 so as not to flutter between the elongated hole 13B and the escape portion Ba in the band width direction may be provided. The hook 13F shown in the figure is pivotally connected to the tongue 13 by a support shaft Fa, and the hook portion Fb provided on the tongue 13 is normally hooked on a hook pin Fb provided on the tongue 13 so as to be a relief portion Ba. The webbing 11 can be switched to a state in which the webbing 11 can move in the band width direction by opening the relief portion Ba by rotating the hook 13F in the counterclockwise direction shown in the figure by manually operating the hook 13F. It has become.

  Further, the locking member targeted by the present invention is intended to lock the falling movement of the tongue 13 by the shape protruding from the belt surface of the webbing 11, and only from the back side of the webbing 11. Even if it protrudes, it may protrude only from the surface side. Further, in the form in which the locking member protrudes from both the front and back surfaces of the webbing 11, even if it protrudes in the same manner from the front and back surfaces of the webbing 11, it greatly protrudes to either one of the surfaces. It does not matter if it is in the form.

DESCRIPTION OF SYMBOLS 1 Vehicle seat 2 Seat back 3 Seat cushion 4 Headrest 10 Seat belt device 11 Seat belt webbing 11A Shoulder webbing part 11B Lap webbing part 12 Slip joint 13 Tongue 13A Mounting part 13B Long hole Ba Relief part Bb Passing part 13C Resin part Ca Stop surface 13D Through groove Da Inclined surface 13D Slide plate 13E Hanging hook 13F Hanging hook Fa Support shaft Fb Hanging pin 14 Buckle 101 Locking protrusion (Locking member)
102 Locking projection (locking member)
102A Hook groove 102B Inclined surface 103 Locking curved plate (locking member)
103A Fastener 104 Locking Fin (Locking Member)
105 Locking protrusion (Locking member)
106 Locking protrusion (Locking member)
106A Upper inclined surface 106B Lower inclined surface 107 Leaf spring (locking member)
107A Short plate portion 107B Long plate portion 108 Locking bag (locking member)
108A Viscous fluid 109 Locking protrusion (Locking member)
110 Locking protrusion (Locking member)
111 Locking piece (locking member)
111A Support shaft 112 Locking protrusion (Locking member)
P seated crew

Claims (3)

A tongue of a seat belt device provided with a stopper structure for locking a drop movement of a tongue serving as a wearing tool passed through the seat belt webbing to a belt-like seat belt webbing that restrains the body of a seated occupant to a vehicle seat A stopper structure,
The stopper structure is configured to prevent the passage of the tongue by the protruding shape of a locking member attached to the seat belt webbing and lock the fall movement, and the locking member is attached to the seat belt webbing. A plurality of the tongues are provided side by side in the longitudinal direction, and the tongue is held in a posture state in which the tongue is locked to the protruding shape of the locking member by a gravitational action in the free state. When the seat belt webbing is operated to move at least a part of the seat belt webbing in a direction different from the belt length direction of the seat belt webbing, the latched state of the latch member is released. A tongue stopper structure for a seat belt device, wherein the tongue stopper structure is capable of passing through a protruding shape. A tongue stopper structure for a seat belt device according to claim 1,
When the tongue is in its free state, the tongue is held in a state of being tilted downward, which can be locked to the protruding shape of the locking member, by the biasing action of its own weight, but the tongue is tilted downward. By raising from the posture, the opening shape of the through hole of the seat belt webbing formed in the tongue is in a state of being widened in the belt length direction of the seat belt webbing and passes through the protruding shape of the locking member A tongue stopper structure for a seatbelt device, wherein A tongue stopper structure for a seat belt device according to claim 1 or 2,
The seat belt is characterized in that the protruding shape of the locking member is formed such that the protrusion from the front surface side is larger than the protrusion from the back surface side applied to the body of the seated occupant of the seat belt webbing. The tongue stopper structure of the device.

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