JP2009179115A - Occupant constraint system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an occupant constraint system capable of easily attaching a constraint implement. <P>SOLUTION: The occupant constraint system 3 is equipped with an arm 30 which has a pivot shaft 33 pivotally supported on a seat 1 disposed on a vehicle 10 at one end, a tongue plate 36 engaged with a buckle 35 disposed on the seat 1 at the other end, and rigidity to such an extent as to fix the distance between the pivot shaft 33 and the tongue plate 36 when the tongue plate 36 turns around the pivot shaft 33 in order to be engaged with the buckle 35. When the vehicle 10 causes a collision, the arm 30 holds an airbag 50 constraining a lumbar of an occupant. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to an occupant restraint device that restrains an occupant seated in a seat such as a vehicle.

  An occupant restraint device that restrains an occupant seated in the seat is provided in a seat provided in a moving body such as a vehicle. A three-point seat belt device is well known as an occupant restraint device. The seat belt of the three-point seat belt device is configured such that one end is fixed to the outer anchor and the other end is wound around the retractor via a shoulder belt guide. In the middle of the seat belt, a tongue plate on which the seat belt is mounted is movably attached by being engaged with a buckle provided on the inner anchor (see, for example, Patent Document 1).

In the occupant restraint device described in Patent Document 1, when the seat belt is mounted, the occupant's waist is restrained by a lap belt that is a portion between the outer anchor of the seat belt and the tongue plate. Furthermore, the occupant restraint device detects the position of the occupant's waist in order to maintain the restraint of the seat belt with respect to the occupant regardless of the seating position of the occupant, and the lap belt according to the detected position of the waist At least one of the outer anchor and the inner anchor disposed at both ends of the vehicle is moved in the front-rear direction with respect to the seat.
Japanese Patent Laid-Open No. 2001-122076

  By the way, in the occupant restraint device as described in Patent Document 1, when the seat belt is mounted, there are many situations where the occupant engages the buckle by groping while holding the tongue plate. It is difficult to determine the engagement position of the plate with the buckle. Further, in order to attach the seat belt while visually confirming the position of the buckle, the occupant must twist the upper body to engage the tongue plate with the buckle. Thus, the conventional occupant restraint device has room for improvement in terms of its usability. In addition, there is a similar problem not only in the three-point seat belt but also in the two-point seat belt. For this reason, there has been a demand for an occupant restraint device capable of easily mounting restraints such as seat belts.

  This invention is made in view of such a situation, and the objective is to provide the passenger | crew restraint apparatus which can mount | wear a restraint tool easily.

Hereinafter, means for achieving the above-described object and its operation and effects will be described.
According to the first aspect of the present invention, a pivot shaft that is pivotally supported by a seat provided in the movable body is provided at one end, and a tongue plate that is engaged with a buckle provided in or near the seat is provided at the other end. And rigid enough to fix the distance between the rotating shaft and the tongue plate when the rotating shaft is rotated about the rotating shaft to engage the buckle. The gist of the present invention is an occupant restraint device comprising a retaining member, wherein the retaining member retains a restraining tool that restrains the occupant's waist when an impact occurs on the movable body.

  According to this configuration, since the distance between the rotation shaft of the holding member holding the restraint and the tongue plate is fixed, the tongue plate is engaged with the buckle simply by rotating the holding member. The occupant does not have to engage the buckle with the tongue plate by hand, and can easily mount the occupant restraint device by rotating the holding member without visual inspection.

  According to a second aspect of the present invention, in the occupant restraint device according to the first aspect, a space is formed between the holding member and the waist of the occupant when the tongue plate is engaged with the buckle. The restraint is normally held in a non-restrained state separated from the occupant's waist, and is restrained to restrain the occupant's waist when the impact occurs. The gist is to become.

  According to this configuration, when the holding member is mounted, it is provided at a predetermined distance from the seating surface of the seat so that a space is formed between the seat and the passenger. can do. In addition, the restraint does not normally restrain the occupant's waist, but restrains the occupant's waist when an impact occurs.Therefore, a space is formed between the holding member and the occupant during an impact, and when the impact occurs The occupant can be restrained, and both comfort and safety can be achieved.

  The invention described in claim 3 is the occupant restraint device according to claim 1 or 2, further comprising a shoulder belt for restraining an upper body of the occupant seated on the seat, the shoulder belt being connected to the holding member. The gist of this is.

  According to this configuration, since the shoulder belt that restrains the upper body of the occupant seated in the seat is connected to the holding member, the shoulder belt is also mounted together with the mounting of the holding member. Therefore, since the occupant is restrained by the waist and the upper body, the safety can be further improved.

  The invention according to claim 4 is the occupant restraint device according to claim 2 or 3, wherein the restraint is an airbag that is inflated so as to fill a space between the holding member and the occupant, The gist is that when the impact is generated or when the impact is predicted to occur in the moving body, the contracted state is expanded from the contracted unconstrained state to restrain the occupant's waist.

  According to this configuration, when an impact occurs, the airbag is inflated to change from a non-restrained state to a restrained state in which the occupant is restrained. For this reason, when an impact occurs, the occupant's waist is restrained by the airbag, and safety can be ensured.

  According to a fifth aspect of the present invention, in the occupant restraint device according to the second or third aspect, the restraint tool is a lap belt that can be wound by a winder, and the lap belt generates the impact. Or at the time of impact prediction when it is predicted that an impact will be generated on the moving body, by being wound up by the winding device, it is separated from the holding member from a non-restrained state and becomes a restrained state that restrains the waist of the occupant That is the gist.

  According to this configuration, when the impact is generated, the winding device winds up the lap belt, so that the occupant is restrained from the unrestrained state. For this reason, when the impact occurs, the occupant's waist is restrained by the lap belt, and safety can be ensured.

The gist of the invention described in claim 6 is that the shoulder belt and the lap belt are integrally coupled in the occupant restraint device according to claim 5.
According to this configuration, since the shoulder belt and the lap belt are integrally connected, the shoulder belt and the lap belt can be displaced integrally without being displaced separately. For example, when winding with a winding device, both belts can be wound by winding one belt.

  According to a seventh aspect of the present invention, in the occupant restraint device according to any one of the first to sixth aspects, the holding member is provided with an expansion / contraction mechanism, which is in an extended state when mounted and contracted when stored. The gist is to be in a state.

  According to this configuration, the holding member is stretched by the expansion / contraction mechanism, and is stretched when mounted, and is contracted when stored. Therefore, the holding member can be stored in a contracted state and is installed except when the holding member is mounted. Does not take up space, looks good, and does not get in the way.

  ADVANTAGE OF THE INVENTION According to this invention, the passenger | crew restraint apparatus which can be mounted | worn easily can be provided.

(First embodiment)
Hereinafter, a first embodiment in which an occupant restraint device according to the present invention is applied to a seat of a driver's seat of a vehicle as a moving body will be described with reference to FIGS.

  As shown in FIGS. 1 and 2, the seat 1 is disposed on the floor 11 of the vehicle 10. The seat 1 is provided integrally with a seat cushion frame 16 that supports the seat 1, a seat cushion 17 that supports an occupant's buttocks, and a rear end portion of the seat cushion 17. The seat back 18 that supports the back of the occupant and the headrest 19 provided on the upper portion of the seat back 18 are configured.

  The seat 1 is provided with an occupant restraint device 3 for restraining an occupant seated on the seat 1 and a displacement mechanism 2 as a displacement means for displacing the occupant restraint device 3 in the front-rear direction of the seat 1 together with the seat 1.

  The displacement mechanism 2 is provided on a seat cushion frame 16 attached to the floor 11 of the vehicle 10 via a slide rail 16a. Specifically, the right support members 12 and 13 and the left support members 14 and 15 are fixed to the front and rear sides of the seat cushion frame 16, respectively. On the right support members 12 and 13, a right drive shaft 21 formed with a spiral protrusion 21 a extends in the front-rear direction and is rotatably supported. On the left support members 14 and 15, a left drive shaft 22 formed with a spiral protrusion 22 a extends in the front-rear direction and is supported rotatably. On both the left and right side surfaces of the seat cushion frame 16, the arm support member 23 and the buckle support member 24 are disposed so as to be between the right support members 12 and 13 and the left support members 14 and 15, respectively. The arm support member 23 and the buckle support member 24 are penetrated in the front-rear direction, and the right side through hole 25 and the left side penetration in which spiral grooves 25a and 26a are formed on the inner surface and coincide with the spiral protrusions 21a and 22a. Each hole 26 is formed. The right drive shaft 21 and the left drive shaft 22 are screwed into the right through hole 25 of the arm support member 23 and the left through hole 26 of the buckle support member 24, respectively, and are rotatably supported.

  The right drive shaft 21 and the left drive shaft 22 are rotated in synchronization by a right drive motor 27 and a left drive motor 28 provided at one end thereof. When the right drive shaft 21 and the left drive shaft 22 are rotated, the spiral grooves 25a and 26a of the right through hole 25 and the left through hole 26 and the spiral protrusions 21a and 22a of the right drive shaft 21 and the left drive shaft 22 are rotated. As a result, the arm support member 23 and the buckle support member 24 are driven in the front-rear direction.

  The occupant restraint device 3 includes an arm 30 as a holding member that holds an airbag 50 as a restraint that restrains the occupant's waist, and a single continuous webbing 40 that restrains the occupant.

  The arm 30 extends in the left-right direction of the seat 1, and as shown in FIG. 3, the AA cross-sectional shape is substantially square, and an internal space 31 in which the webbing 40 is accommodated is provided in the center of the cross-section. It consists of a hollow member. As shown in FIG. 2, a rotation shaft 33 that is rotatably supported by the arm support member 23 is provided at the right end 32 of the arm 30 when viewed from the passenger. A tongue plate 36 that is engaged with a buckle 35 fixed to the buckle support member 24 is provided at the left end 34 of the arm 30 when viewed from the occupant. These are provided so that the buckle 35 corresponds to the rotation locus of the tongue plate 36. Therefore, when the arm 30 is rotated, the tongue plate 36 is engaged with the buckle 35. In a state where the tongue plate 36 is engaged with the buckle 35, the arm 30 is formed in an arc shape protruding upward so as to surround the lumbar portion of the occupant when viewed from the front-rear direction of the seat 1, and the lumbar portion of the occupant The seat cushion 17 is provided at a predetermined distance from the seat surface so that a space is formed between the seat cushion 17 and the seat cushion 17. The arm 30 is rigid to such an extent that the distance between the rotation shaft 33 and the tongue plate 36 is fixed. From the lower outer surface of the arm 30 to the rear outer surface, a folded airbag 50 is housed and disposed in a breakable cover 51. The airbag 50 is inflated so as to fill the space between the arm 30 and the occupant when an impact occurs in the vehicle 10 due to a collision or the like, or when an impact is predicted to occur in the vehicle 10. A webbing 40 is accommodated in the internal space 31 of the arm 30. For this reason, the strength of the entire arm 30 is ensured. The arm 30 has a strength capable of withstanding the pressure when the airbag 50 is inflated in a state where the webbing 40 is stored.

  The right end of the webbing 40 is inserted through the internal space 31 of the arm 30 and is locked to a pretensioner 43 as a winding device provided inside the arm support member 23. The pretensioner 43 receives an operation signal from an impact detection sensor (not shown) provided in the vehicle 10 when an impact occurs in the vehicle 10 or predicts that an impact will occur in the vehicle 10. When an operation signal is input from a collision prediction sensor (not shown) that predicts the occurrence of a collision provided at 10, the webbing 40 is pulled in the direction of the pretensioner 43 by a predetermined amount. The left end of the webbing 40 is inserted through the inner space 31 of the arm 30 and is drawn out from an upper opening 44 formed in the vicinity of the tongue plate 36 on the upper outer surface.

  As shown in FIG. 1, the left end of the webbing 40 drawn out from the upper opening 44 is locked to a winding shaft (not shown) of a retractor 45 provided above the right shoulder of the occupant of the seat back 18. Has been. That is, the webbing 40 is housed in the internal space 31 of the arm 30, folded back at the upper opening 44, locked to the winding shaft of the retractor 45, and coupled to the arm 30. The winding shaft constantly biases the webbing 40 in the winding direction by the biasing force of the mainspring spring. Here, a portion between the upper opening 44 of the webbing 40 and the retractor 45 is referred to as a shoulder belt 41, and a portion accommodated in the internal space 31 of the arm 30 of the webbing 40 is referred to as a lap belt 42. The shoulder belt 41 and the lap belt 42 are integral.

  The arm 30 is normally held in a state in which the left end 34 is positioned above the rotation shaft 33 because the webbing 40 is wound up by the retractor 45. When the arm 30 is rotated to the left about the rotation shaft 33 by the occupant, the tongue plate 36 at the left end 34 coincides with the position of the buckle 35 while the webbing 40 is pulled out from the retractor 45, Combined.

  Inside the arm support member 23, a gas generator (not shown) that supplies inflation gas to the inside of the airbag 50 through a supply pipe is provided. As shown in FIG. 4 and FIG. 5, when an operation signal is input to the gas generation device from the impact detection sensor when an impact such as a collision occurs or when it is predicted that an impact will occur, The gas generator supplies gas to the airbag 50. Thereby, the airbag 50 is inflated so as to cover the arm 30 and the waist and abdomen of the occupant.

Next, the operation | movement aspect of the passenger | crew restraint apparatus 3 comprised as mentioned above is demonstrated.
Before the occupant gets into the vehicle 10, the arm 30 is rotated upward about the rotation shaft 33 of the right end portion 32 and the left end portion 34 is held above the rotation shaft 33. Has been.

  When the occupant gets into the vehicle 10, sits on the seat 1 and mounts the occupant restraint device 3, the arm 30 is rotated downward about the rotation shaft 33 of the right end 32. When the arm 30 is rotated, the tongue plate 36 at the left end 34 of the arm 30 coincides with the position of the buckle 35, and the tongue plate 36 is engaged with the buckle 35. At this time, the shoulder belt 41 is pulled out of the retractor 45 as the arm 30 rotates. That is, when the tongue plate 36 is engaged with the buckle 35, the shoulder belt 41 restrains the occupant's upper body, and the arm 30 creates a space between the occupant's waist and restrains the occupant's waist. The occupant can mount the occupant restraint device 3 simply by rotating the arm 30.

  When the vehicle 10 collides, an operation signal is pre-set from an impact detection sensor (not shown) provided on the vehicle 10 or when a collision of the vehicle 10 is predicted. Input to the tensioner 43 and the gas generator. Then, the pretensioner 43 winds up the webbing 40 by a predetermined amount, and the upper body of the occupant is more reliably restrained. Moreover, if gas is supplied to the airbag 50 from a gas generator, the airbag 50 will expand | swell. The inflated airbag 50 fills the space between the arm 30 and the occupant's waist, and restrains the occupant's waist and abdomen.

  As described above, the occupant restraint device 3 can be easily mounted only by rotating the arm 30. Further, in a state where the occupant wears the occupant restraint device 3, a space is provided between the arm 30 and the lumbar region of the occupant. When the vehicle 10 collides or when it is predicted that the vehicle 10 will collide, the airbag 50 is inflated to prevent the arm 30 and the occupant's waist from contacting each other, and the occupant's waist and abdomen. Can be restrained.

As described above, according to the embodiment described above, the following effects can be obtained.
(1) Since the distance between the support member of the arm 30 and the tongue plate 36 is fixed, the tongue plate 36 is engaged with the buckle 35 only by rotating the arm 30. The occupant does not need to engage the buckle 35 by searching for the tongue plate 36, and the occupant restraint device 3 can be easily mounted by rotating the arm 30 without visual inspection.

  (2) When the arm 30 is mounted, it is provided at a predetermined distance from the seat surface of the seat 1 so that a space is formed between the arm 30 and the passenger. it can. In addition, since the restraint does not normally restrain the occupant's waist, but restrains the occupant's waist when an impact occurs, a space is normally formed between the arm 30 and the occupant when an impact occurs. The occupant can be restrained, and both comfort and safety can be achieved.

  (3) Since the shoulder belt 41 that restrains the upper body of the occupant seated on the seat 1 is connected to the arm 30, the shoulder belt 41 is attached together with the arm 30. Therefore, since the occupant is restrained by the waist and the upper body, the safety can be further improved.

  (4) When an impact occurs or when an impact is predicted, the airbag 50 serving as a restraint is inflated to change from a non-restraint state to a restraint state that restrains the occupant. For this reason, the passenger | crew's waist | hip | lumbar part is restrained by the airbag 50 at the time of an impact generation or an impact prediction, and safety | security can be ensured.

  (5) Since the shoulder belt 41 and the lap belt 42 are integrally connected, the shoulder belt 41 and the lap belt 42 are not displaced separately but can be displaced integrally. For example, when winding with a winding device, both belts can be wound by winding one belt.

(6) Since the displacement mechanism 2 that displaces the arm 30 in the front-rear direction is provided, passengers of various physiques can wear the arm 30 in a more comfortable state.
(Second Embodiment)
Hereinafter, a second embodiment in which an occupant restraint device according to the present invention is applied to a driver's seat of a vehicle will be described with reference to FIGS. The occupant restraint device of this embodiment has a point that the cross-sectional shape of the arm is C-shaped, a point that the webbing is separated into a shoulder belt and a lap belt, and a lap belt that is housed in the center of the cross-section of the arm. The point which becomes a restraint tool which restrains a passenger | crew's waist | hip | lumbar part differs from the said 1st Embodiment. Hereinafter, a description will be given focusing on differences from the first embodiment.

  As shown in FIGS. 6 and 7, the arm 30 is formed of a hollow member that extends in the left-right direction of the seat 1 and is provided with an internal space 31 in which a lap belt 42 is accommodated in a central portion of the cross section. In a state where the tongue plate 36 is engaged with the buckle 35, the arm 30 is formed in an arc shape protruding upward so as to surround the lumbar portion of the occupant when viewed from the front-rear direction of the seat 1, and the lumbar portion of the occupant The seat cushion 17 is provided at a predetermined distance from the seat surface so that a space is formed between the seat cushion 17 and the seat cushion 17. The arm 30 is rigid to such an extent that the distance between the rotation shaft 33 and the tongue plate 36 is fixed. An opening 37 extending in the left-right direction is formed on the lower side of the arm 30, and the C-C cross-sectional shape is C-shaped. The opening 37 extends to the vicinity of the right end 32 and the vicinity of the left end 34. A lap belt 42 is accommodated in the internal space 31 of the arm 30.

  The right end of the lap belt 42 is inserted through the internal space 31 of the arm 30 and is locked to a pretensioner 43 serving as a winding device provided inside the arm support member 23. The left end of the lap belt 42 is inserted through the internal space 31 of the arm 30 and fixed to the tongue plate 36 of the internal space 31. As shown in FIG. 8, the pretensioner 43 receives a collision prediction sensor (not shown) from an impact detection sensor (not shown) provided in the vehicle 10 when an impact occurs or when it is predicted that an impact will occur. ), The lap belt 42 is pulled in the direction of the pretensioner 43 by a predetermined amount. Then, since the lap belt 42 tends to be positioned at the shortest distance, the lap belt 42 passes through the opening 37 from the internal space 31 of the arm 30 and comes into contact with the occupant's waist, thereby reliably restraining the occupant's waist.

  The shoulder belt 41 is connected to the arm 30. That is, the lower end of the shoulder belt 41 is fixed to the tongue plate 36 on the upper outer surface of the arm 30. The upper end of the shoulder belt 41 is locked to a winding shaft (not shown) of a retractor 45 provided above the right shoulder of the occupant of the seat back 18. The winding shaft constantly urges the shoulder belt 41 in the winding direction by the urging force of the mainspring spring.

Next, the operation | movement aspect of the passenger | crew restraint apparatus 3 comprised as mentioned above is demonstrated.
Before the occupant gets into the vehicle 10, the arm 30 is rotated upward about the rotation shaft 33 of the right end portion 32 and the left end portion 34 is held above the rotation shaft 33. Has been.

  When the occupant gets into the vehicle 10, sits on the seat 1 and mounts the occupant restraint device 3, the arm 30 is rotated by the occupant about the rotation shaft 33 of the right end 32. When the arm 30 is rotated, the tongue plate 36 at the left end 34 of the arm 30 coincides with the position of the buckle 35, and the tongue plate 36 is engaged with the buckle 35. At this time, the shoulder belt 41 is pulled out of the retractor 45 as the arm 30 rotates. That is, when the tongue plate 36 is engaged with the buckle 35, the shoulder belt 41 restrains the upper body of the occupant and the arm 30 restrains the occupant's waist through a space formed between the shoulder 30 and the occupant's waist. To do. The occupant can mount the occupant restraint device 3 simply by rotating the arm 30.

At normal times, the lap belt 42 is locked to the inner edge of the internal space 31 of the arm 30, thereby preventing the lap belt 42 from falling off the opening 37.
When the vehicle 10 collides, an operation signal is output from an impact detection sensor (not shown) provided on the vehicle 10 or from a collision prediction sensor (not shown) when the vehicle 10 is predicted to collide. 43 is input. Then, the lap belt 42 is wound up by a predetermined amount in the pretensioner 43, and a downward force is applied to the lap belt 42. The lap belt 42 passes through the opening 37 while being deformed, and the waist of the occupant is lowered. Securely restrained.

  As described above, the occupant restraint device 3 can be easily mounted only by rotating the arm 30. Further, in a state where the occupant wears the occupant restraint device 3, a space is provided between the arm 30 and the lumbar region of the occupant. When the vehicle 10 collides, the lap belt 42 can restrain the occupant's waist.

As described above, according to the embodiment described above, the following effects can be obtained in addition to the effects (1) to (3), (5), and (6) of the first embodiment.
(1) When the impact is generated or when the impact is predicted, the pretensioner 43 takes up the lap belt 42 to change the restraint state to restrain the occupant from the unrestrained state. For this reason, when an impact occurs or when an impact is predicted, the lap belt 42 restrains the occupant's lower back, thereby ensuring safety.

  (2) The arm 30 is hollow and has a C-shaped structure in which an opening 37 is formed over the entire length of the lower part thereof. When an impact occurs or when an impact is predicted, the lap belt 42 is accommodated inside the arm 30. From the unconstrained state, it passes through the opening 37 downward to enter the constrained state. For this reason, the lap belt 42 can easily shift to a restraint state in which the occupant is restrained when an impact occurs or when an impact is predicted by utilizing the winding of the pretensioner 43. Further, the arm 30 and the lap belt 42 are not separated except when an impact occurs or when an impact is predicted, and a clean structure can be obtained.

In addition, the said embodiment can be implemented with the following forms which changed this suitably.
In the first embodiment, the lap belt 42 is accommodated in the internal space 31 of the arm 30 in order to improve the strength of the arm 30. However, the wrap belt 42 has a strength that can withstand the pressure when the airbag 50 is inflated. It may be replaced with a metal plate.

If the arm 30 can withstand the pressure when the airbag 50 is inflated, the lap belt 42 and the metal plate may be omitted.
In the first embodiment, the airbag 50 is disposed so as to restrain the occupant's waist and abdomen, but may be disposed so as to restrain only the occupant's waist.

  In the first embodiment, the airbag 50 is inflated when an impact occurs in the vehicle 10 or when an impact is predicted to occur in the vehicle 10. Gas may be supplied to the bag 50, and the airbag 50 may always be inflated at the time of wearing.

  In the first embodiment, the shoulder belt 41 and the lap belt 42 are integrated into the webbing 40. However, the shoulder belt 41 and the lap belt 42 may be separated as in the second embodiment.

  In the first embodiment, the arm 30 fixed in a fixed shape is used. However, as shown in FIG. 10, an arm 60 that can be deformed after being mounted may be used. The arm 60 is divided into a plurality of rectangular parallelepipeds, and adjacent lower ends of the rectangular parallelepipeds are connected by a rotatable rotating unit. Specifically, as shown in the enlarged views of FIGS. 11A and 11B, rotating portions 64, 65, 66, and 67 are provided at the adjacent lower ends of the rectangular parallelepipeds 61, 62, and 63. For example, when the rectangular parallelepiped 62 is lifted upward, the adjacent upper ends of the rectangular parallelepipeds 61, 62, and 63 are separated from each other, and the arm 60 can be deformed.

  In the second embodiment, a deformable arm 60 may be adopted as shown in FIG. Specifically, an opening 68 is formed on the lower side of the arm 60, and rotating parts 64, 65, 66, and 67 that connect the rectangular parallelepipeds 61, 62, and 63 so as to sandwich the opening 68 are provided.

  -In the said 2nd Embodiment, as shown to Fig.13 (a) and (b), you may employ | adopt the expansion-contraction mechanism 7 for an arm. Specifically, the telescopic mechanism 7 is provided in the central portion of the arm 70. In the telescopic mechanism 7, the first telescopic part 71, the second telescopic part 72, and the third telescopic part 73 are connected so as to be displaceable in the axial direction, and the first telescopic part 71 is fitted into the left end 74 of the arm 70, The second stretchable part 72 is fitted inside the first stretchable part 71, and the third stretchable part 73 is fitted inside the second stretchable part 72 to contract. According to such a configuration, the arm 70 is stretched by the expansion / contraction mechanism 7 when attached, and is contracted when stored, so that the arm 70 can be stored in a contracted state and when the arm 70 is mounted. It doesn't take up any other installation space and looks nice.

  -Moreover, as FIG. 14, FIG. 15 (a) and (b) show, you may provide the airbag 76 in the arm 70 with which the said expansion-contraction mechanism 7 was provided. Specifically, the airbag 76 is disposed in the internal space 75 of the expansion / contraction mechanism 7 of the arm 70, and an opening 77 is formed below the expansion / contraction mechanism 7. When the airbag 76 is inflated, the airbag 76 is deployed outward from the internal space 75 through the opening 77 to restrain the occupant's waist.

  In the second embodiment, the left end of the lap belt 42 is inserted into the inner space 31 of the arm 30 and fixed to the tongue plate 36 of the inner space 31. The internal space 31 may be inserted and fixed to the tongue plate 36 near the internal space 31.

  In the second embodiment, the lap belt 42 is normally held in an unconstrained state in which it is housed in the internal space 31, and is wound by the pretensioner 43 when an impact occurs or when an impact is predicted. The passenger is restrained by passing through the opening 37 of the arm 30. However, as shown in FIG. 9, the lap belt 42 is bonded to the lower portion of the arm 30 with an adhesive 38, and is normally held in an unbound state in which the lap belt 42 is bonded. By being wound up, the lap belt 42 may be peeled off from the arm 30 to be in a restrained state in which the occupant's waist is restrained.

  In the above embodiment, the shoulder belt 41 is locked to the take-up shaft of the retractor 45 provided on the seat back 18, but the retractor provided at other places such as the B pillar of the vehicle 10 is taken up. You may make it latch on a axis | shaft.

Further, the retractor 45 may be replaced with a retractor pretensioner that also has a pretensioner function.
In the above-described embodiment, the arm 30 is rotated by being operated by the occupant. However, a drive unit may be provided on the rotation shaft 33 to automatically rotate the arm 30.

  In the above embodiment, the right drive shaft 21 and the left drive shaft 22 are rotated by the right drive motor 27 and the left drive motor 28, respectively, but the right drive shaft 21 and the left drive shaft 22 are interlocked with a gear or the like. You may make it rotate with one drive motor provided in any one drive shaft by interlocking with a member.

  In the above embodiment, the occupant restraint device 3 can be displaced in the front-rear direction by the displacement mechanism 2, but the occupant restraint device 3 may be further displaced in the vertical direction by the displacement mechanism 2. Further, the occupant restraint device 3 may be displaced only in the vertical direction by the displacement mechanism 2.

In the above configuration, a configuration in which the displacement mechanism is omitted can be adopted.
-In the said structure, you may comprise right and left. For example, the rotation shaft 33 is provided on the left end 34 of the arm 30 and the tongue plate 36 is provided on the right end 32.

In the above configuration, if a two-point seat belt may be used, a configuration in which the shoulder belt 41 is omitted may be employed.
In the above embodiment, the present invention is applied to the driver's seat of the vehicle 10, but may be applied to other seats.

In the above embodiment, the present invention is applied to the seat of the vehicle 10, but may be applied to a seat of another moving body such as an airplane.
Next, the technical idea that can be grasped from the embodiment will be described together with the effects.

  (A) In the occupant restraint device according to claim 5 or 6, the holding member is hollow and has a C-shaped structure in which an opening is formed over the entire length of the lower part thereof. The lap belt is held in the non-restrained state accommodated in the holding member, and the lap belt is wound downward by the winding device when the impact is generated or the impact is predicted. The occupant restraint device is placed in a restraint state in which the occupant is separated from the holding member and restrains the occupant's waist.

  According to this structure, the holding member is hollow and has a C-shaped structure in which an opening is formed over the entire length of the lower part thereof. When an impact occurs or when an impact is predicted, the lap belt is accommodated inside the holding member. From the unconstrained state that has been made, the opening portion is passed downward to enter a constrained state. For this reason, the lap belt can easily shift to a restrained state in which the occupant is restrained when an impact occurs or when an impact is predicted, using the winding of the winding device. In addition, the holding member and the lap belt are not separated except when an impact occurs or when an impact is predicted, and a clean structure can be obtained.

  (B) The occupant restraint device according to claim 5, wherein the lap belt is normally held in an unrestrained state bonded to a lower portion of the holding member, and the winding device is used when the impact occurs or when the impact is predicted. The occupant restraint device, wherein the lap belt is peeled off to be in a restrained state that restrains the occupant's waist.

  According to this configuration, when an impact occurs or when an impact is predicted, the lap belt is peeled from the unconstrained state bonded to the lower portion of the holding member and becomes a restrained state. For this reason, the lap belt can easily shift to a restrained state in which the occupant is restrained when an impact occurs or when an impact is predicted, using the winding of the winding device. In addition, the holding member and the lap belt are not separated except when an impact occurs or when an impact is predicted, and a clean structure can be obtained.

  (C) In the occupant restraint device according to any one of claims 1 to 6, supplementary note 1 and supplementary note 2, a displacement means for displacing the holding member in at least one of the front-rear direction and the vertical direction is provided. An occupant restraint device.

According to this configuration, since the displacement member that displaces the holding member in at least one of the front-rear direction and the up-down direction is provided, the occupant can mount the holding member in a more comfortable state.
(D) In the occupant restraint device according to any one of claims 1 to 6 and appendices 1 to 3, the holding member maintains a shape when being mounted, and when the occupant is mounted, An occupant restraint device comprising a structure that is deformable within a range of movement.

  According to this configuration, the holding member has a structure that maintains its shape when mounted and can be deformed within a range in which the occupant moves when mounted. Therefore, when the occupant mounts the holding member, the tongue plate is easily engaged with the buckle, and when the holding member is mounted, the occupant can move while mounting the holding member.

The perspective view of a seat and a crew member restraint device. The front view of a seat and a crew member restraint device. AA sectional drawing of a holding member. The front view of a seat and a crew member restraint device. BB sectional drawing of a holding member. The front view of a seat and a crew member restraint device. CC sectional drawing of a holding member. The front view of a seat and a crew member restraint device. Sectional drawing of a holding member. The front view of a holding member. (A) Enlarged view of holding member, (b) Enlarged view showing deformation of holding member. The perspective view of a holding member. (A) The front view which shows the normal time of a passenger | crew restraint apparatus, (b) The front view which shows the time of accommodation of a passenger | crew restraint apparatus. The perspective view of a holding member. (A) DD sectional drawing of a holding member, (b) EE sectional drawing of a holding member.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Seat, 2 ... Displacement mechanism, 3 ... Passenger restraint device, 7 ... Telescopic mechanism, 10 ... Vehicle, 11 ... Floor, 12 ... Right side support member, 13 ... Right side support member, 14 ... Left side support member, 15 ... Left side support 16: Seat cushion frame, 17 ... Seat cushion, 18 ... Seat back, 19 ... Headrest, 21 ... Right drive shaft, 21a ... Projection, 22 ... Left drive shaft, 22a ... Projection, 23 ... Arm support member, 24 ... Buckle support member, 25 ... right side through hole, 25a ... groove, 26 ... left side through hole, 26a ... groove, 27 ... right side drive motor, 28 ... left side drive motor, 30 ... arm, 31 ... internal space, 32 ... right side End part 33 ... Rotating shaft 34 ... Left end part 35 ... Buckle 36 ... Tang plate 37 ... Opening part 38 ... Adhesive 40 ... Webbing 41 ... Shoulder belt 42 ... Ladder Belt, 43 ... pretensioner, 44 ... upper opening, 45 ... retractor, 50 ... airbag, 51 ... cover, 60 ... arm, 61-63 ... rectangular parallelepiped, 64-67 ... rotating part, 68 ... opening, 70 DESCRIPTION OF SYMBOLS ... Arm, 71 ... 1st expansion-contraction part, 72 ... 2nd expansion-contraction part, 73 ... 3rd expansion-contraction part, 74 ... Left end part, 75 ... Internal space, 76 ... Air bag, 77 ... Opening part.

Claims (7)

A pivot shaft that is pivotally supported by a seat provided in the movable body is provided at one end, and a tongue plate that is engaged with a buckle provided in the seat or in the vicinity thereof is provided at the other end. A holding member that is rigid to the extent that the distance between the rotating shaft and the tongue plate when the rotating shaft is rotated about the rotating shaft to engage with the buckle is fixed;
The said holding member hold | maintains the restraint tool which restrains a passenger | crew's waist | hip | lumbar part at the time of the impact generate | occur | produced in the said mobile body. The occupant restraint device according to claim 1,
When the tongue plate is engaged with the buckle, the holding member is provided at a predetermined distance from the seating surface of the seat so that a space is formed between the waist and the occupant.
The restraint device is normally held in an unrestrained state separated from the occupant's waist, and is restrained to restrain the occupant's waist when the impact occurs. The occupant restraint device according to claim 1 or 2,
A shoulder belt for restraining the upper body of an occupant seated in the seat,
The shoulder belt is connected to the holding member. The occupant restraint device according to claim 2 or 3,
The restraint is an airbag that inflates so as to fill a space between the holding member and an occupant,
The airbag is in the restrained state in which the airbag is inflated from the contracted unconstrained state and restrains the occupant's waist when the impact is generated or when the impact is predicted to occur in the moving body. An occupant restraint device. The occupant restraint device according to claim 2 or 3,
The restraint tool is a lap belt provided so as to be wound by a winding device,
The lap belt is separated from the holding member from an unconstrained state by being wound by the winding device when the impact is generated or when the impact is predicted to be generated on the moving body. An occupant restraint device characterized by being in a restrained state of restraining the waist. The occupant restraint device according to claim 5,
The shoulder belt and the lap belt are integrally connected. In the crew member restraint device according to any one of claims 1 to 6,
The holding member is provided with an expansion / contraction mechanism, and is in an extended state when mounted and contracted when stored.

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