WO2018142872A1 - Mécanisme de transmission - Google Patents

Mécanisme de transmission Download PDF

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Publication number
WO2018142872A1
WO2018142872A1 PCT/JP2018/000493 JP2018000493W WO2018142872A1 WO 2018142872 A1 WO2018142872 A1 WO 2018142872A1 JP 2018000493 W JP2018000493 W JP 2018000493W WO 2018142872 A1 WO2018142872 A1 WO 2018142872A1
Authority
WO
WIPO (PCT)
Prior art keywords
groove
wire
pulley
cable
transmission mechanism
Prior art date
Application number
PCT/JP2018/000493
Other languages
English (en)
Japanese (ja)
Inventor
拓也 柴山
雄亮 生駒
Original Assignee
株式会社東海理化電機製作所
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 株式会社東海理化電機製作所 filed Critical 株式会社東海理化電機製作所
Priority to CN201880006809.1A priority Critical patent/CN110177962A/zh
Publication of WO2018142872A1 publication Critical patent/WO2018142872A1/fr

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R22/00—Safety belts or body harnesses in vehicles
    • B60R22/34—Belt retractors, e.g. reels
    • B60R22/36—Belt retractors, e.g. reels self-locking in an emergency
    • B60R22/40—Belt retractors, e.g. reels self-locking in an emergency responsive only to vehicle movement
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H19/00—Gearings comprising essentially only toothed gears or friction members and not capable of conveying indefinitely-continuing rotary motion
    • F16H19/02—Gearings comprising essentially only toothed gears or friction members and not capable of conveying indefinitely-continuing rotary motion for interconverting rotary or oscillating motion and reciprocating motion

Definitions

  • the present invention relates to a transmission mechanism in which a long member is moved in the longitudinal direction by rotation of the rotating member, or the rotating member is rotated by movement of the long member in the longitudinal direction.
  • the pulley may be assembled to the pulley case with a cable wound around the outer periphery of the pulley.
  • the pulley case it is difficult to hold the cable around the outer periphery of the pulley.
  • the present invention has an object to obtain a transmission mechanism that can be held in a state in which a long member is wound around the outer peripheral portion of the rotating member in consideration of the above fact.
  • the transmission mechanism includes a long member movable in the longitudinal direction, one side in the longitudinal direction of the long member being locked, and the long member wound around an outer peripheral portion.
  • the long member is moved to the longitudinal direction side by being moved, or the rotating member is rotated by moving the long member to the longitudinal direction side.
  • the long member can be held in a state where the long member is wound around the rotating member, and the holding of the long member is eliminated by the movement of the long member in the direction away from the outer peripheral portion of the rotating member. And a holding unit.
  • the long member is held in a state of being wound around the outer peripheral portion of the rotating member by the holding unit provided in the rotating member. For this reason, a rotation member can be assembled
  • the rotating member rotates or the long member moves in the longitudinal direction side.
  • the long member can be wound around the rotating member and the long member can be pulled out from the rotating member.
  • the transmission mechanism according to a second aspect of the present disclosure is the transmission mechanism according to the first aspect, wherein the holding of the elongate member by the holding portion is performed by moving the elongate member to the other side in the longitudinal direction. This is eliminated by the movement of the elongate member in the direction away from the outer peripheral portion.
  • the long member is held by the holding portion by moving the long member in a direction away from the outer peripheral portion of the rotating member by moving the long member to the other side in the longitudinal direction. Is eliminated. For this reason, for example, after assembling the rotating member to the support or the like with the long member wound around the outer peripheral portion of the rotating member, the long member is pulled to the other side in the longitudinal direction, By moving in a direction away from the outer peripheral portion of the rotating member, the holding of the long member by the holding portion can be eliminated.
  • a transmission mechanism is the transmission mechanism according to the first or second aspect, in which the rotation member is reciprocally rotatable within a range of less than one rotation, and the holding portion is It is provided outside the winding range of the long member in the reciprocating rotation of the moving member.
  • the rotating member can be reciprocally rotated within a range of less than one rotation, and the holding portion is outside the winding range of the long member in the reciprocating rotation of the rotating member. Provided. For this reason, it can suppress that a holding
  • a transmission mechanism is the transmission mechanism according to any one of the first to third aspects, provided on an outer peripheral portion of the rotating member, and opened to a radially outer side of the rotating member. And the holding portion protrudes from a wall surface facing the central axis of the rotating member on the inner side of the groove portion on the opening side of the groove portion than the long member. It is formed.
  • the long member enters the groove portion of the rotating member, and the holding portion is provided on the opening side of the long member in the groove portion.
  • the holding portion is formed so as to protrude from the wall surface facing the central axis direction of the rotating member inside the groove portion. For this reason, a groove part becomes narrow in the part in which the holding part was provided in the groove part, and it can hold
  • the transmission mechanism according to a fifth aspect of the present disclosure is the transmission mechanism according to the fourth aspect, in which the holding portion is formed to project from each of both wall surfaces of the groove portion facing each other in the central axis direction of the rotating member.
  • the holding portion is formed so as to protrude from each of both wall surfaces facing the central axis direction of the rotating member in the groove portion of the rotating member. For this reason, the width
  • maintenance part can be made small, when a long member is moved to the direction away from the outer peripheral part of a rotation member, holding
  • the transmission mechanism according to the sixth aspect of the present disclosure is the transmission mechanism according to the fourth or fifth aspect, in which a protruding direction side end of the holding portion from the wall surface is a curved surface that bulges toward the protruding direction side.
  • the end in the protruding direction from the wall surface of the holding portion is a curved surface that swells toward the protruding direction, so that the long member is separated from the outer peripheral portion of the rotating member.
  • the holding of the long member by the holding portion can be easily eliminated.
  • the long member can be held around the outer periphery of the rotating member.
  • an arrow FR indicates the front side of the webbing retractor 10 to which the transmission mechanism according to the embodiment of the present invention is applied
  • an arrow LH indicates the left side of the apparatus
  • an arrow UP indicates the upper side of the apparatus. Show. Further, in the following description of each embodiment, the same reference numerals are given to the substantially same parts as those in the previous embodiment, and the detailed description thereof is omitted. To do.
  • the webbing retractor 10 to which the first embodiment is applied is provided on a seat back 14 of a vehicle seat 12.
  • the seat back 14 is located behind the vehicle with respect to the seat cushion 16 around the lower portion of the seat back 14 (the side opposite to the arrow Y in FIG. 2).
  • the seat 12 is provided with a reclining mechanism that can be turned to the side (arrow Z1 direction side in FIG. 2) and the vehicle front side (arrow Z2 direction side in FIG. 2).
  • the webbing take-up device 10 includes a device main body 18.
  • the apparatus main body 18 is provided on the vehicle upper side (arrow Y direction side in FIG. 2) inside the seat back 14 of the seat 12.
  • the apparatus main body 18 includes a frame 20.
  • the frame 20 is fixed to a skeleton or the like (not shown) of the seat back 14 shown in FIG.
  • the frame 20 includes leg plates 22 and 24. These leg plates 22 and 24 are opposed to each other in the left-right direction of the apparatus.
  • the frame 20 is provided with a spool 26.
  • the center axis direction of the spool 26 is along the opposing direction of the leg plate 22 and the leg plate 24 (that is, the left-right direction of the device), and the spool 26 is rotatable around the center axis.
  • the longitudinal base end portion of the long webbing 28 is locked to the spool 26, and when the spool 26 is rotated in the winding direction (the direction of arrow A in FIG. 1), the webbing 28 is It is wound on the spool 26 from the end side.
  • the webbing 28 extends from the spool 26 to the upper side of the apparatus.
  • the webbing 28 extending from the spool 26 to the upper side of the device is located on the vehicle upper side end (side end in the arrow Y direction in FIG. 2) of the seat back 14 in the vehicle width direction From the side) portion to the upper side of the seat back 14. Further, the webbing 28 that protrudes to the upper side of the seat back 14 extends to the front side of the vehicle (the end in the direction of the arrow X in FIG. 2) along the upper side end of the seat back 14, and further to the front side of the seat back 14 on the front side of the vehicle. Along the vehicle lower side (the opposite side to the arrow Y direction in FIG. 2).
  • the front end of the webbing 28 in the longitudinal direction is locked to the anchor plate 30.
  • the anchor plate 30 is fixed to the skeleton of the seat back 14 or the vehicle body of the vehicle.
  • the webbing 28 is provided with a tongue 32.
  • the tongue 32 is disposed in a portion of the webbing 28 that is provided on the front side of the seatback 14 and can move within a predetermined range along the webbing 28.
  • the vehicle seat belt device to which the webbing retractor 10 is applied includes a buckle 34.
  • the buckle 34 is provided inside the seat 12 in the vehicle width direction.
  • the webbing 28 is attached to the occupant's body by engaging the tongue 32 with the buckle 34 in a state where the webbing 28 is wound around the occupant's body seated on the seat 12.
  • a spring case 36 is provided on the left side of the leg plate 24 of the frame 20.
  • a spiral spring as a spool urging portion is accommodated inside the spring case 36.
  • the spiral direction outer end of the spiral spring is locked to the spring case 36.
  • the spiral direction inner end of the spiral spring is directly or indirectly locked to the end of the spool 26 on the leg plate 24 side (device left side). As a result, the spool 26 is biased in the winding direction (the direction of arrow A in FIG. 1).
  • a lock base 38 is provided on the leg plate 22 side of the spool 26 (on the right side of the device).
  • the lock base 38 is disposed coaxially with the spool 26.
  • the device right side portion of the torsion bar 40 serving as an energy absorbing member constituting the force limiter mechanism is disposed in the center side in the radial direction of the lock base 38 so as to penetrate the device right side portion of the torsion bar 40 of the lock base 38. Relative rotation is limited.
  • the torsion bar 40 has a rod shape, and the longitudinal direction of the torsion bar 40 is the left-right direction of the apparatus.
  • the device left side portion of the torsion bar 40 is disposed inside the spool 26.
  • the left side portion of the torsion bar 40 is connected to the spool 26, and the relative rotation of the left side portion of the torsion bar 40 with respect to the spool 26 is restricted.
  • the relative rotation of the lock base 38 with respect to the spool 26 is limited, and the lock base 38 is rotated integrally with the spool 26.
  • a ratchet hole 42 is formed in the leg plate 22 of the frame 20 corresponding to the lock base 38.
  • the ratchet hole 42 is formed coaxially with the lock base 38, and the lock base 38 is disposed inside the ratchet hole 42.
  • the lock base 38 is provided with a lock pawl 44.
  • the lock pawl 44 is movable with respect to the lock base 38 in a lock direction (arrow C direction in FIG. 1) which is one of the radial directions of the lock base 38 and in the opposite direction.
  • the lock pawl 44 is formed with lock teeth.
  • the engagement teeth of the lock pawl 44 mesh with the ratchet teeth of the ratchet hole 42.
  • the rotation of the lock base 38 in the pull-out direction (direction of arrow B in FIG. 1) opposite to the winding direction is performed. Limited.
  • a sensor holder 46 is provided on the right side of the frame 20.
  • the sensor holder 46 is formed in a bottomed shape that opens toward the left side of the apparatus, and the sensor holder 46 is fixed to the frame 20 so as to face the leg plate 22 of the frame 20.
  • a V gear 48 is provided inside the sensor holder 46.
  • the torsion bar 40 described above corresponding to the V gear 48 is provided with a shaft portion 50.
  • the shaft portion 50 is provided coaxially with the spool 26, and the V gear 48 is rotatably supported by the shaft portion 50.
  • the V gear 48 is provided with a spring (not shown). A part of this spring is engaged with the lock base 38, and when the lock base 38 is rotated in the pull-out direction, the spring is pressed against the lock base 38 and the V gear 48 is pulled in the pull-out direction by the spool 26. Pressed. As a result, the V gear 48 can follow the spool 26 and rotate in the pull-out direction. A part of the lock pawl 44 provided on the lock base 38 is engaged with the V gear 48. When the lock base 38 is rotated relative to the V gear 48 in the pull-out direction, the lock pawl 44 is locked. It is moved in the direction (arrow C direction in FIG. 1).
  • a sensor cover 52 is provided on the opposite side of the sensor holder 46 from the leg plate 22.
  • the sensor cover 52 has a bottomed shape that opens toward the leg plate 22, and is attached to the leg plate 22.
  • a hanger 54 is disposed inside the sensor cover 52.
  • the hanger 54 has a box shape and is fixed to the leg plate 22 of the frame 20.
  • the hanger 54 is opened to the upper side of the apparatus, and an acceleration sensor 56 is provided inside the hanger 54.
  • the acceleration sensor 56 includes a sensor housing 58.
  • the sensor housing 58 includes a placement unit 60.
  • Vertical walls 62 are formed at both ends of the mounting unit 60 in the left-right direction of the apparatus.
  • the vertical wall 62 extends from the both ends of the mounting portion 60 in the left-right direction of the apparatus to the upper side of the apparatus.
  • Housing pins 64 are provided on the upper end portions of the vertical walls 62.
  • the central axis direction of these housing pins 64 is generally the left-right direction of the device, and both housing pins 64 are arranged coaxially with each other.
  • the housing pin 64 of the vertical wall 62 on the right side of the apparatus protrudes from the vertical wall 62 to the right side of the apparatus, and the housing pin 64 of the vertical wall 62 on the left side of the apparatus protrudes from the vertical wall 62 to the left side of the apparatus. Yes.
  • These housing pins 64 are rotatably supported by the hanger 54. Accordingly, the sensor housing 58 of the acceleration sensor 56 can be rotated relative to the hanger 54 around the housing pin 64.
  • a sensor ball 66 as an inertia mass body is provided on the mounting portion 60 of the sensor housing 58. Further, a sensor lever 68 is provided on the upper side of the sensor ball 66. The sensor lever 68 is supported by a sensor housing 58, and the sensor lever 68 can be rotated in the vertical direction of the apparatus around a support position by the sensor housing 58. When the sensor ball 66 rolls to the vehicle front side on the mounting portion 60, the sensor lever 68 is pushed by the sensor ball 66 and rotated to the vehicle upper side.
  • a V pawl 70 is provided on the upper side of the sensor lever 68.
  • the V pawl 70 is rotatably supported by the sensor holder 46, and when the sensor lever 68 is rotated upward, the V pawl 70 is pressed by the sensor lever 68 and rotated upward. .
  • a part of the V pawl 70 is arranged on the radial side of the V gear 48 inside the sensor holder 46, and the V pawl 70 is engaged with the V gear 48 by being turned upward. This restricts the rotation of the V gear 48 in the pull-out direction.
  • a gear case 72 is provided on the left side of the leg plate 22 of the frame 20.
  • the gear case 72 includes a pulley arrangement portion 74.
  • the pulley arrangement part 74 is formed in a substantially cylindrical shape whose left end is closed.
  • a spring support portion 76 is provided inside the pulley arrangement portion 74.
  • the spring support portion 76 has a substantially cylindrical shape and is provided coaxially with the pulley arrangement portion 74.
  • the spring support portion 76 is provided with a return spring 78 shown in FIG.
  • the return spring 78 is a torsion coil spring, and the return spring 78 is attached to the spring support portion 76 in a state where the spring support portion 76 is inserted inside the coiled portion of the return spring 78. It is supported. One end of the return spring 78 is held by the gear case 72, and the other end of the return spring 78 is one of the directions around the axis centering on the spring support 76 (see FIG. 1 and the like). Energized in the direction of arrow D).
  • a pulley support shaft 80 is provided coaxially with respect to the spring support portion 76 at the right end of the spring support portion 76, and a pulley 82 as a rotating member shown in FIG.
  • the support shaft 80 is rotatably supported.
  • the pulley 82 holds one side portion of the cable 84 in the longitudinal direction.
  • the cable 84 includes a tube 86.
  • the tube 86 is formed in a hollow long string shape.
  • An engaging cylinder 88 is provided at one end portion in the longitudinal direction of the tube 86.
  • the engagement cylinder 88 is a cylinder that is harder than the tube 86, and the longitudinal end portion of the tube 86 is inserted inside the engagement cylinder 88.
  • a flange portion 90 is formed at the center portion in the central axis direction of the engagement cylinder 88. The flange portion 90 extends from the outer peripheral portion of the engagement tube 88 in a direction orthogonal to the central axis direction of the engagement tube 88.
  • a caulking portion 92 is formed in the engagement cylinder 88.
  • the caulking portion 92 is disposed on the tube 86 side of the flange portion 90 in the engagement tube 88.
  • the cross-sectional shape of the engagement tube 88 is substantially hexagonal.
  • the engagement cylinder 88 is fixed to the longitudinal end of the tube 86 by the engagement cylinder 88 being caulked at the caulking portion 92 in a state where the longitudinal end of the tube 86 is inserted inside the engagement cylinder 88.
  • the cable 84 includes a wire 94 as a long member.
  • the wire 94 has a long string shape.
  • the middle portion in the longitudinal direction of the wire 94 is disposed inside the tube 86, and both end portions in the longitudinal direction of the wire 94 extend from both longitudinal ends of the tube 86 to the outside of the tube 86.
  • the wire 94 is movable relative to the tube 86 in the longitudinal direction of the wire 94 and the tube 86.
  • Wire stoppers 96 are fixed to both ends of the wire 94 in the longitudinal direction.
  • the wire stopper 96 has a cylindrical shape that is thicker than the wire 94, for example.
  • the pulley 82 that holds one side in the longitudinal direction of the cable 84 having such a configuration includes a pulley body 98.
  • the pulley body 98 has a ring shape or a cylindrical shape with a relatively small axial dimension.
  • a wire locking portion 100 is provided on the radially outer side of the pulley body 98.
  • the wire locking part 100 includes a stopper arrangement part 102.
  • the stopper placement portion 102 is a hole with a bottom that is opened on one side in the axial direction of the pulley main body 98 (on the left side of the device), and on the inside of the stopper placement portion 102 is one side in the longitudinal direction of the wire 94 of the cable 84.
  • An end wire stopper 96 is disposed.
  • a first groove 104 is formed on the opposite side of the stopper arrangement portion 102 in the wire locking portion 100 from the return direction (the arrow D direction in FIG. 6 and the like).
  • the first groove 104 is a groove opened on one side of the pulley body 98 in the axial direction (on the left side of the device). Further, the first groove 104 is connected to the stopper arrangement portion 102, and the end opposite to the stopper arrangement portion 102 of the first groove 104 is opened at the peripheral surface of the wire locking portion 100.
  • the wire 94 of the cable 84 is disposed inside the first groove 104, and the opposite side of the wire 94 to the wire stopper 96 in the stopper placement portion 102 is the end opposite to the stopper placement portion 102 of the first groove 104. To the outside of the wire locking part 100.
  • a first crushing rib 106 is provided inside the stopper arrangement portion 102 in the wire locking portion 100.
  • the first crushing rib 106 is formed so as to protrude from the surface of the stopper arrangement portion 102 opposite to the first groove 104, and when the wire stopper 96 of the cable 84 is arranged inside the stopper arrangement portion 102, the first crushing rib 106 is formed.
  • the crushing rib 106 is crushed to the side opposite to the first groove 104 by the wire stopper 96.
  • the wire stopper 96 is held by the wire locking portion 100 inside the stopper arrangement portion 102, and the displacement of the wire stopper 96 is suppressed.
  • a wire winding portion 108 is provided outside the pulley body 98 in the radial direction of the pulley 82.
  • the wire winding part 108 is formed on the side of the pulley main body 98 in the circumferential direction of the wire locking part 100.
  • a second groove 110 is formed in the wire winding portion 108.
  • the second groove 110 is opened to the outside in the radial direction of the pulley main body 98, and the wire 94 of the cable 84 can enter the inside of the second groove 110, and the wire 94 can be wound around the wire winding portion 108. it can.
  • the wire winding portion 108 is provided with a temporary holding portion 112 as a holding portion.
  • the temporary holding portion 112 protrudes from both wall surfaces facing the central axis direction of the pulley main body 98 on the inner surface of the second groove 110 of the wire winding portion 108.
  • the temporary holding portion 112 is formed in a substantially conical shape tapered toward the protruding direction side from the wall surface of the second groove 110, and the protruding direction side end portion of the temporary holding portion 112 is a curved surface that swells toward the protruding direction side. It is said that.
  • the temporary holding portion 112 is disposed on the radially outer side of the pulley main body 98 with respect to the wire 94 (that is, on the opening side of the second groove 110). For this reason, the movement of the wire 94 to the opening side of the second groove 110 is suppressed by the temporary holding part 112 in the portion where the temporary holding part 112 is formed in the second groove 110.
  • the temporary holding portion 112 is formed in the second groove 110 on the opposite side to the return direction (direction of arrow D in FIG. 7 and the like) that is the biasing direction of the return spring 78.
  • the wire stopper 96 of the wire 94 on one side in the longitudinal direction of the cable 84 is held by the wire locking portion 100 of the pulley 82, and the one side portion in the longitudinal direction of the wire 94 is The temporary holding portion 112 holds the second groove 110 inside.
  • the other end portion in the longitudinal direction of the cable 84 is connected to the interlocking mechanism 114 shown in FIG.
  • the interlocking mechanism 114 is disposed on the vehicle lower side portion of the seat back 14.
  • the wire 94 of the cable 84 is pulled and moved to the other side in the longitudinal direction.
  • the wire 94 is pulled out of the second groove 110 at a portion of the second groove 110 opposite to the return direction (the arrow D direction in FIG. 6 and the like).
  • the wire 94 is wound around the portion where the temporary holding portion 112 of the second groove 110 is formed even if the pulley 82 is most rotated in the return direction.
  • the formation position of the temporary holding portion 112 is set so as not to occur.
  • a cable holding portion 116 is formed on the lower rear side of the pulley arrangement portion 74 in the gear case 72.
  • the cable holding portion 116 includes a cable arrangement groove 118.
  • the cable arrangement groove 118 is opened to the right side of the apparatus.
  • a wide portion 120 is formed in the cable arrangement groove 118, and the width of the cable arrangement groove 118 is widened in the wide portion 120.
  • the width dimension of the cable arrangement groove 118 at the widened portion 120 is slightly smaller than the thickness of the engagement tube 88 at the flange portion 90 (the dimension of the flange portion 90 along the direction orthogonal to the longitudinal direction of the cable 84). Has been enlarged to. Further, the width dimension of both sides of the cable arrangement groove 118 across the widened portion 120 is larger than the thickness dimension of both side portions of the engaging cylinder 88 sandwiching the flange portion 90, and the thickness of the engaging cylinder 88 at the flange portion 90. It is smaller than that.
  • the flange portion 90 of the engagement tube 88 on one side in the longitudinal direction of the cable 84 is disposed inside the widened portion 120 of the cable disposition groove 118, and both side portions sandwiching the flange portion 90 of the engagement tube 88 are cable disposition grooves. 118 is disposed inside both side portions sandwiching the widened portion 120.
  • a claw disposing portion 122 is formed on the lower side of the cable disposing groove 118 in the cable holding portion 116.
  • the claw placement portion 122 is a bottomed hole opened to the right side of the apparatus, and the width dimension of the claw placement portion 122 along the width direction of the cable placement groove 118 is made larger than the widened portion 120 of the cable placement groove 118.
  • the other end portion of the cable 84 in the longitudinal direction of the engagement tube 88 is arranged in the engagement tube 88 with respect to the cable placement groove 118.
  • the claw placement portion 122 is provided with a pair of cable holding claws 124.
  • the cable holding claw 124 is erected from the bottom of the claw placement portion 122 to the opening side (right side of the device) of the claw placement portion 122.
  • Both cable holding claws 124 are opposed to each other in the width direction of the claw disposing portion 122, and the other end portion in the longitudinal direction of the cable 84 in the engagement tube 88 is a base end portion of the cable holding claws 124 (cable holding claw). 124 between the left and right devices).
  • the distal end portion of the cable holding claw 124 is opposed to the engagement cylinder 88 from the opening side (right side of the device) of the claw arrangement portion 122, and thereby the displacement of the engagement cylinder 88 toward the opening side of the claw arrangement portion 122. Is suppressed.
  • a passage groove 126 is formed on the gear case 72 on the lower side of the claw arrangement portion 122.
  • the passage groove 126 is opened to the right side of the apparatus.
  • the claw arrangement portion 122 side of the passage groove 126 is connected to the claw arrangement portion 122, and the side opposite to the claw arrangement portion 122 of the passage groove 126 is opened at the apparatus lower end of the gear case 72.
  • the other side portion in the longitudinal direction of the cable 84 is arranged with respect to the claw arrangement portion 122 in the engagement tube 88 of the cable 84.
  • Second crushing ribs 128 are formed on the walls on both sides in the width direction of the passage groove 126.
  • the second crushing rib 128 on one wall portion of the passage groove 126 is opposed to the second crushing rib 128 on the other wall portion of the passage groove 126, and the engagement cylinder 88 is disposed inside the passage groove 126. At this time, these second crushing ribs 128 are crushed by the engaging cylinder 88. Thereby, rattling of the engaging cylinder 88 is suppressed.
  • the other end portion in the longitudinal direction of the cable 84 from the engagement tube 88 extends from the passage groove 126 to the lower side of the gear case 72, and the other end portion in the longitudinal direction of the cable 84 is connected to the interlock mechanism as shown in FIG. 114.
  • the interlock mechanism 114 is operated in conjunction with the rotation of the seat back 14 around the vehicle lower side portion of the seat back 14 toward the vehicle rear side and the vehicle front side. For example, when the interlocking mechanism 114 is operated in conjunction with the rotation of the seat back 14 toward the rear side of the vehicle, the wire 94 of the cable 84 is pulled to the other side in the longitudinal direction of the cable 84 (that is, the interlocking mechanism 114 side).
  • the wire 94 is moved to the other side in the longitudinal direction of the cable 84 with respect to the tube 86.
  • the pulley 82 is rotated in the direction opposite to the return direction (the arrow D direction in FIG. 1 and the like) against the urging force of the return spring 78.
  • the wire 94 of the cable 84 is one side in the longitudinal direction of the cable 84 (that is, opposite to the interlocking mechanism 114).
  • the wire 94 is moved to one side in the longitudinal direction of the cable 84 with respect to the tube 86.
  • the pulley 82 is rotated in the return direction (the direction of arrow D in FIG. 1 and the like) by the urging force of the return spring 78.
  • a gear arrangement part 130 is provided on the upper side of the pulley arrangement part 74 in the gear case 72.
  • the gear arrangement portion 130 is provided with a gear support shaft 132.
  • a sector gear 142 is provided on the gear support shaft 132.
  • the sector gear 142 is generally fan-shaped as a whole, and a circular hole 144 is formed at the main position of the fan when the sector gear 142 is regarded as a fan shape.
  • a gear support shaft 132 is disposed through the circular hole 144 of the sector gear 142, and the sector gear 142 is supported by the gear support shaft 132 so as to be rotatable around the gear support shaft 132.
  • the pulley 82 described above corresponding to the sector gear 142 is provided with a gear portion 146.
  • the gear portion 146 is a spur external gear, and is arranged coaxially with the pulley main body 98.
  • the external teeth of the sector gear 142 are engaged with the external teeth of the gear portion 146, and the sector gear 142 is rotated when the pulley 82 is rotated.
  • the sector gear 142 is provided with a rod 148.
  • the rod 148 has a substantially cylindrical shape, and the central axis direction of the rod 148 is the same as the central axis direction of the gear support shaft 132.
  • the rod 148 extends from the right side surface of the sector gear 142.
  • a first hole 150 is formed in the leg plate 22 of the frame 20, and a second hole 152 is formed in the vertical wall 62 on the leg plate 22 side of the hanger 54.
  • the rod 148 passes inside the hanger 54 through the first hole 150 and the second hole 152.
  • the tip end of the rod 148 (the end opposite to the sector gear 142) is engaged with the sensor housing 58 of the acceleration sensor 56, and when the sector gear 142 is rotated, the sensor housing 58 is The sector gear 142 is pressed toward the rotation direction by 148, whereby the sensor housing 58 is rotated around the housing pin 64.
  • the sensor ball 66 of the acceleration sensor 56 rolls on the mounting portion 60 of the sensor housing 58 when the vehicle suddenly decelerates during a vehicle collision or the like.
  • the sensor lever 68 is rotated upward by the sensor ball 66.
  • the V pawl 70 is pressed upward by the sensor lever 68 and the V pawl 70 is rotated upward.
  • the V pawl 70 is engaged with the V gear 48, and the rotation of the V gear 48 in the pull-out direction is limited.
  • the webbing take-up device 10 is provided on the seat back 14 of the seat 12 with the reclining mechanism as described above.
  • the seat back 14 shown in FIG. 2 is located on the vehicle rear side with respect to the seat cushion 16 with respect to the vehicle lower side (opposite the arrow Y direction in FIG. 2) portion of the seat back 14 (
  • the state of the apparatus main body 18 of the webbing take-up device 10 before being rotated in the direction indicated by the arrow X1 in FIG. 2 is shown.
  • FIG. 4 shows the state in which the seat back 14 is rotated toward the rear side of the vehicle. It is shown.
  • the frame 20 of the apparatus main body 18 of the webbing take-up device 10 is fixed to the skeleton of the seat back 14 or the like. For this reason, when the seat back 14 is rotated to the rear side of the vehicle, the apparatus main body 18 is rotated together with the seat back 14 to the rear side of the vehicle.
  • the interlocking mechanism 114 of the webbing retractor 10 is operated in conjunction with the rotation of the seat back 14.
  • the wire 94 of the cable 84 is pulled to the other side in the longitudinal direction of the cable 84 (that is, the interlocking mechanism 114 side), and the wire 94 is moved to the other side in the longitudinal direction of the cable 84 with respect to the tube 86.
  • the pulley 82 is rotated in the direction opposite to the return direction (the arrow D direction in FIG. 1 and the like) against the urging force of the return spring 78.
  • the rotation of the pulley 82 is transmitted to the sector gear 142, whereby the sector gear 142 is rotated.
  • the sensor housing 58 of the acceleration sensor 56 is pressed against the rod 148 of the sector gear 142, and the sensor housing 58 rotates with respect to the frame 20 of the apparatus body 18 around the housing pin 64. Moved. Thereby, even if the apparatus main body 18 is rotated to the rear side of the vehicle, the inclination of the sensor housing 58 is suppressed, and even if the apparatus main body 18 is rotated to the rear side of the vehicle, the operation of the acceleration sensor 56 can be stabilized. it can.
  • the pulley 82 is attached to the gear case 72 in the assembly process of the apparatus main body 18 of the webbing take-up device 10.
  • the wire stopper 96 on one side in the longitudinal direction of the cable 84 is previously arranged inside the stopper arrangement portion 102 of the wire locking portion 100 of the pulley 82.
  • One side portion of the wire 94 in the longitudinal direction is wound around the second groove 110 of the wire winding portion 108 of the pulley 82.
  • a first crushing rib 106 is provided inside the stopper arrangement portion 102, and when the wire stopper 96 is arranged inside the stopper arrangement portion 102, the first crushing rib 106 is moved by the wire stopper 96. One groove 104 is crushed to the opposite side. As a result, the wire stopper 96 is held by the wire locking portion 100 inside the stopper arrangement portion 102, and the displacement of the wire stopper 96 is suppressed. For this reason, when the pulley 82 is attached to the gear case 72, the wire stopper 96 can be prevented from coming off from the stopper arrangement portion 102.
  • a temporary holding portion 112 is provided in the second groove 110 of the wire winding portion 108, and the second groove 110 becomes narrow at the portion where the temporary holding portion 112 is formed in the second groove 110, and the opening of the second groove 110.
  • the temporary holding portion 112 suppresses the movement of the wire 94 to the side.
  • the wire 94 is held in a state of being wound around the second groove 110 of the wire winding portion 108.
  • the mounting work becomes easier.
  • the temporary holding portion 112 protrudes from both wall surfaces facing the central axis direction of the pulley main body 98 on the inner surface of the second groove 110 of the wire winding portion 108. For this reason, the width
  • channel 110 can be narrowed, without enlarging the protrusion dimension of each temporary holding
  • the protruding direction side end portion of the temporary holding portion 112 is a curved surface bulging toward the protruding direction side. Therefore, when the wire 94 is pulled and moved to the other side in the longitudinal direction, the wire 94 can be pulled out of the second groove 110.
  • the pulley 82 is moved in the return direction (see FIG. 6, and the wire 94 is wound around the second groove 110 of the pulley 82 from one side in the longitudinal direction.
  • the wire 94 is not wound around the portion where the temporary holding portion 112 of the second groove 110 is formed. The formation position is set. For this reason, when the pulley 82 is rotated in the return direction, the temporary holding portion 112 does not become a resistance when the wire 94 is wound around the second groove 110 of the pulley 82. Accordingly, when the pulley 82 is rotated in the return direction, the wire 94 can be smoothly wound around the second groove 110 of the pulley 82.
  • the temporary holding portion 112 as the holding portion is plate-shaped.
  • the longitudinal direction of the temporary holding portion 112 is along the circumferential direction of the pulley body 98 of the pulley 82, and the thickness direction of the temporary holding portion 112 is along the radial direction of the pulley body 98.
  • the temporary holding portion 112 protrudes from both wall surfaces facing the central axis direction of the pulley main body 98 on the inner surface of the second groove 110 of the wire winding portion 108. For this reason, this embodiment can obtain the same effects as those of the first embodiment.
  • a third embodiment will be described.
  • a portion of the second groove 110 of the pulley 82 opposite to the return direction is a narrow portion 154 as a holding portion.
  • the width of the second groove 110 is narrower than the portion of the second groove 110 that is closer to the return direction than the narrow portion 154.
  • the diameter is equal to or smaller than the diameter of the wire 94.
  • a pair of notches 156 is formed on the wire winding portion 108 of the pulley 82 on the opposite side to the return direction (the direction of arrow D in FIG. 10 and the like). ing.
  • One of the pair of notches 156 is formed in one of the walls facing the central axis direction of the pulley body 98 in the second groove 110, and the other of the pair of notches 156 is in the second groove 110 of the pulley body 98. It is formed on the other of the wall portions facing in the central axis direction.
  • These notches 156 are opened outward in the radial direction of the pulley main body 98, and face the central axis direction of the pulley main body 98.
  • an engaging portion 158 is provided inside the notch 156 on the left side of the apparatus.
  • the engaging portion 158 as a holding portion extends from the end portion of the notch portion 156 on the central axis side of the pulley main body 98 to the outside in the radial direction of the pulley main body 98, and is formed at a portion where the engaging portion 158 is formed in the second groove 110.
  • the wire 94 of the cable 84 is arranged, the wire 94 is arranged on the right side of the device of the engaging portion 158. Further, the device right side surface of the engaging portion 158 is shifted to the device right side from the device right side surface inside the second groove 110.
  • the wire 94 is bent and arrange
  • a protrusion 160 is provided at the radially outer end of the pulley main body 98 in the engaging portion 158.
  • the protrusion 160 protrudes from the engagement portion 158 to the right side of the apparatus, and this also suppresses the movement of the wire 94 to the outside of the second groove 110.
  • the wire 94 of the cable 84 arranged inside the second groove 110 is bent in the second groove 110 by the engaging portion 158, and further, on the radially outer side of the pulley body 98 of the wire 94.
  • the protrusion 160 of the engaging portion 158 is disposed.
  • the wire 94 is held in a state of being wound around the second groove 110 of the wire winding portion 108.
  • the mounting work becomes easier.
  • the cable holding claw 124 is not provided in the gear case 72.
  • the cable pressing claws 162 are provided on the leg plates 22 of the frame 20.
  • the cable presser claws 162 are arranged on the leg plate 22 at a portion facing the claw arrangement part 122 of the cable holding part 116 of the gear case 72.
  • the cable presser claw 162 is bent from the leg plate 22 to the left side of the device, and the tip of the cable presser claw 162 is inside the claw arranging portion 122. Thereby, the displacement of the engagement cylinder 88 toward the opening side of the claw placement portion 122 can be suppressed.
  • the temporary inner surface of the second groove 110 of the wire winding portion 108 is temporarily used as a holding portion from both wall surfaces facing the central axis direction of the pulley body 98.
  • the holding part 112 protruded.
  • the temporary holding portion 112 may be provided only on one of both wall surfaces facing the central axis direction of the pulley body 98 on the inner surface of the second groove 110.
  • the holding portion is provided on the opposite side of the second groove 110 of the pulley 82 from the return direction (the arrow D direction in FIG. 6 and the like).
  • the holding portion may be provided in the center portion in the circumferential direction of the pulley 82 in the second groove 110.
  • the wire 94 is wound around the portion where the temporary holding portion 112 of the second groove 110 is formed.
  • the formation position of the temporary holding part 112 as a holding part was set so as not to occur.
  • a configuration in which a part of the wire 94 is held by the holding portion in a state where the pulley 82 is most rotated in the return direction may be employed.
  • the present invention is applied to the wire 94 of the cable 84 that connects the device main body 18 of the webbing take-up device 10 and the interlocking mechanism 114 and the pulley 82 around which the wire 94 is wound on the device main body 18 side.
  • the configuration was applied.
  • the present invention may be applied to other parts of the webbing take-up device 10 or configurations other than the webbing take-up device 10.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Automotive Seat Belt Assembly (AREA)
  • Transmission Devices (AREA)
  • Seats For Vehicles (AREA)
  • Storing, Repeated Paying-Out, And Re-Storing Of Elongated Articles (AREA)

Abstract

Dans ce dispositif d'enroulement de nappe (10), des pièces de maintien temporaires (112) sont disposées sur des parties latérales en regard d'une direction de verrouillage dans une seconde rainure (110) d'une poulie (82). Les pièces de maintien temporaires (112) sont formées de manière à faire saillie à partir des surfaces, de la seconde rainure (110), qui se font face dans la direction d'axe central de la poulie (82). Le mouvement d'un fil dans une direction de chute hors de la seconde rainure (110) est supprimé par les pièces de maintien temporaires (112) pendant que le fil d'un câble est disposé à l'intérieur de la seconde rainure (110).
PCT/JP2018/000493 2017-02-06 2018-01-11 Mécanisme de transmission WO2018142872A1 (fr)

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JP2017019910A JP6393788B2 (ja) 2017-02-06 2017-02-06 伝達機構

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Citations (3)

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JPH10291461A (ja) * 1997-02-24 1998-11-04 Nippon Seiko Kk シートベルト用リトラクター
JP2013159318A (ja) * 2012-02-08 2013-08-19 Tokai Rika Co Ltd ウェビング巻取装置
JP2015001124A (ja) * 2013-06-17 2015-01-05 株式会社城南製作所 ウィンドウレギュレータ

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GB2306441B (en) * 1995-10-21 1999-09-29 Adrian David Stuart Hall A reel
JP3767197B2 (ja) * 1998-06-01 2006-04-19 タカタ株式会社 シートベルト装置
CN101223095B (zh) * 2005-07-13 2013-03-27 特线工业株式会社 金属线条体卷装用卷轴
US7487932B2 (en) * 2005-12-20 2009-02-10 Andrew Ellis Wire spool
KR100901253B1 (ko) * 2008-04-24 2009-06-08 델파이코리아 주식회사 후크로 연결하는 시트벨트 리트랙터의 잠금장치
JP5833374B2 (ja) * 2011-08-11 2015-12-16 株式会社ブリヂストン ケーブルビードの製造方法とその装置
CN103930316B (zh) * 2011-11-14 2016-02-17 奥托立夫开发公司 安全带装置
JP2013123994A (ja) * 2011-12-14 2013-06-24 Autoliv Development Ab シートベルト装置
JP5778025B2 (ja) * 2011-12-27 2015-09-16 株式会社東海理化電機製作所 ウェビング巻取装置
CN203158925U (zh) * 2013-03-25 2013-08-28 深圳市德润青华水下工程科技股份有限公司 一种用于潜水机器人收放线缆的滑轮的导向杆结构
JP2016199221A (ja) * 2015-04-14 2016-12-01 株式会社東海理化電機製作所 ウェビング巻取装置

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10291461A (ja) * 1997-02-24 1998-11-04 Nippon Seiko Kk シートベルト用リトラクター
JP2013159318A (ja) * 2012-02-08 2013-08-19 Tokai Rika Co Ltd ウェビング巻取装置
JP2015001124A (ja) * 2013-06-17 2015-01-05 株式会社城南製作所 ウィンドウレギュレータ

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JP2018128044A (ja) 2018-08-16
CN110177962A (zh) 2019-08-27

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