WO2014126059A1 - シートベルト用リトラクタ - Google Patents

シートベルト用リトラクタ Download PDF

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Publication number
WO2014126059A1
WO2014126059A1 PCT/JP2014/053080 JP2014053080W WO2014126059A1 WO 2014126059 A1 WO2014126059 A1 WO 2014126059A1 JP 2014053080 W JP2014053080 W JP 2014053080W WO 2014126059 A1 WO2014126059 A1 WO 2014126059A1
Authority
WO
WIPO (PCT)
Prior art keywords
lock
retractor
lock arm
rotation
winding drum
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/JP2014/053080
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
宗麟 李
知也 松永
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ashimori Industry Co Ltd
Original Assignee
Ashimori Industry Co Ltd
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 Ashimori Industry Co Ltd filed Critical Ashimori Industry Co Ltd
Priority to US14/763,858 priority Critical patent/US9701278B2/en
Priority to DE112014000484.7T priority patent/DE112014000484T5/de
Publication of WO2014126059A1 publication Critical patent/WO2014126059A1/ja
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • 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
    • B60R22/38—Belt retractors, e.g. reels self-locking in an emergency responsive only to belt movement
    • 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
    • B60R22/405—Belt retractors, e.g. reels self-locking in an emergency responsive to belt movement and vehicle movement
    • 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
    • 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
    • B60R22/3416—Unlocking devices for retractors
    • 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
    • B60R2022/3419—Belt retractors, e.g. reels with end lock preventing means

Definitions

  • the webbing removed from the occupant is taken up by the rotating take-up drum and stored in the retractor until it is pulled out next time.
  • the lock mechanism may be erroneously operated due to the reaction of stopping the rotation of the winding drum.
  • the lock mechanism is activated, the retractor is prevented from rotating in the pull-out direction, and the webbing cannot be pulled out from the retractor.
  • the webbing cannot be wound, and an end lock occurs in the retractor.
  • a retractor that releases an end lock by pulling out a webbing is conventionally known (see Patent Document 1).
  • the present invention relates to a winding drum that is rotatable in the winding direction and the drawing direction of the webbing, and a displacement member that rotates together with the winding drum and can be displaced in the lock operation direction in accordance with the acceleration in the drawing direction of the winding drum. And a stop portion that engages with the displacement member displaced in the lock operation direction and stops the displacement member, and starts operation with rotation of the take-up drum in a state where the displacement member stops at the stop portion.
  • a retractor for a seat belt comprising a lock mechanism for stopping the rotation of the take-up drum, and a release means for releasing the engagement between the displacement member and the stop portion, wherein the release means starts from the operation start of the lock mechanism.
  • the seat belt retractor includes a transmission mechanism that transmits the rotation of the take-up drum to the displacement member and displaces the displacement member in the releasing direction to release the engagement with the stop portion until the rotation of the belt stops.
  • FIG. 10 is a side view of the winding drum as viewed from the direction W3 in FIG. 9. It is a perspective view of an acceleration sensor, a mechanism cover, and a regulating member. It is sectional drawing of the mechanism cover unit seen from the W4 direction of FIG. It is a figure which shows operation
  • the winding spring unit 5 and the mechanism cover unit 6 are fixed to the side surface of the housing unit 3 in a state where the winding drum 10 is disposed in the housing unit 3.
  • the winding spring unit 5 and the mechanism cover unit 6 cover both ends of the winding drum unit 4 in the axial direction outside the housing unit 3 and rotatably support the winding drum unit 4. Further, the webbing 2 is inserted into the insertion portion 11 of the winding drum 10, and the webbing 2 is prevented from coming out of the insertion portion 11 by the retaining pin 7. Thereby, the end of the webbing 2 is attached to the winding drum 10.
  • the winding drum unit 4 has a clutch unit 8 and rotates in the retracting direction 1 in the winding direction M and the drawing direction P.
  • the winding drum 10 rotates together with the clutch unit 8 in a normal time, and rotates independently from the clutch unit 8 in an emergency or the like.
  • the mechanism cover unit 6 covers the clutch unit 8 of the winding drum unit 4 and constitutes a lock mechanism 9 that stops the rotation of the winding drum 10 together with the clutch unit 8.
  • the lock mechanism 9 is a lock unit that locks the winding drum 10 that rotates in the drawing direction P.
  • the lock mechanism 9 stops the rotation of the take-up drum 10 in the pull-out direction P in response to a rapid pull-out of the webbing 2 or a rapid change in the vehicle speed.
  • the operation of the lock mechanism 9 stops the webbing 2 from being pulled out.
  • the housing unit 3 includes a housing 20 that houses the winding drum 10 and a protector 3A formed of synthetic resin.
  • the housing 20 includes a back plate portion 21 fixed to the vehicle body, a pair of side wall portions 22 and 23 (first side wall portion 22 and second side wall portion 23) protruding from both side edges of the back plate portion 21, and a pair of It consists of a fixed plate 24 fixed to the side walls 22, 23.
  • the protector 3 ⁇ / b> A has a passage portion 3 ⁇ / b> B for the webbing 2, and is attached to the upper edge portion of the back plate portion 21. The webbing 2 is passed through the passage portion 3B of the protector 3A and passes through the passage portion 3B during winding and withdrawal.
  • FIG. 5 is a cross-sectional view of the retractor 1 taken along line X1-X1 in FIG. 1 in the arrow direction
  • FIG. 6 is a cross-sectional view of the retractor 1 taken in line X2-X2 in FIG.
  • the winding drum 10 is disposed in the housing 20, the first opening 25, and the second opening 27 in a state where the axis of the winding drum 10 coincides with the center of the first opening 25. Rotate.
  • the take-up drum 10 has a pair of shafts 12 and 13 (first shaft 12 and second shaft 13) protruding sideways along the axis.
  • the mechanism cover unit 6 is combined with the clutch unit 8 and rotatably supports the first shaft 12.
  • the winding spring unit 5 is connected to the second shaft 13 and supports the second shaft 13 in a rotatable manner.
  • the winding spring unit 5 (see FIGS. 3 and 4) includes a spiral spring 5A, a spring case 5B that houses the spiral spring 5A, a spring sheet 5C that contacts the second side wall 23 of the housing 20, and a spring shaft 5D.
  • the outer end K1 of the spiral spring 5A is fixed to the spring case 5B, and the inner end K2 of the spiral spring 5B is fixed to the spring shaft 5D.
  • the spring seat 5C is attached to the spring case 5B and covers the spiral spring 5A in the spring case 5B. In this state, the spring shaft 5D is rotatably attached to the spring case 5B and the spring seat 5C.
  • the second shaft 13 of the winding drum 10 is inserted into the support hole 5E and rotatably supported by the spring seat 5C, and is fixed to the spring shaft 5D.
  • FIG. 7 is a perspective view of the disassembled take-up drum unit 4 and shows the take-up drum 10 and the clutch unit 8 as seen from the same direction as FIG.
  • FIG. 8 is a perspective view of the disassembled clutch unit 8, and is an enlarged view of the clutch unit 8 of FIG.
  • the winding drum unit 4 includes a winding drum 10 that can rotate in the winding direction M and the drawing direction P of the webbing 2, a movable pawl 4 ⁇ / b> A that engages with a lock tooth 26 of the housing 20, and a clutch unit 8. And a cap 17.
  • the movable pawl 4A includes an engaging claw 4B that engages with the lock teeth 26, and an interlocking pin 4C that protrudes laterally.
  • the movable pawl 4A has a non-locking position (the position shown in FIG. 10A) where the engaging claw 4B does not engage the locking tooth 26, and a locking position (shown in FIG. 10B) where the engaging claw 4B engages the locking tooth 26. Position).
  • the engaging claw 4B engages with the lock teeth 26, and the movement of the movable pawl 4A is prevented.
  • the movable pawl 4A the winding drum 10 rotating in the drawing direction P is pressed, the winding drum 10 is locked, and the rotation of the winding drum 10 in the drawing direction P is stopped. Therefore, the movable pawl 4 ⁇ / b> A forms a part of the lock mechanism 9 together with the clutch unit 8.
  • the locking clutch 30 has a spring holder 32 formed on the winding drum 10 side, and the return spring 8A is attached to the spring holder 32.
  • the return spring 8 ⁇ / b> A and the spring holder 32 are disposed in the recess 15 of the winding drum 10 with the return spring 8 ⁇ / b> A contracted.
  • the interlocking pin 4C of the movable pawl 4A is inserted into the guide groove 33 of the locking clutch 30, and the columnar protrusion 16 (see FIG. 3) of the winding drum 10 is inserted into the through groove 34 of the locking clutch 30.
  • the protrusion 16 is formed on the side surface of the winding drum 10 and moves in the through groove 34 in the rotation direction of the winding drum 10.
  • the engagement claw 4B and the lock teeth 26 are engaged, the engagement claw 4B comes into contact with the lock teeth 26, and the engagement claw 4B rotates in the pull-out direction P in the radial direction of the locking clutch 30. Move outward. As a result, the engaging claw 4 ⁇ / b> B moves along the lock teeth 26 toward the bottom of the lock teeth 26. When the engagement claw 4B reaches the bottom of the lock tooth 26, the engagement claw 4B is completely engaged with the lock tooth 26, and the engagement between the movable pawl 4A (engagement claw 4B) and the lock tooth 26 is completed. To do.
  • the engaging claw 4B and the lock teeth 26 are formed in a shape that engages with each other in this way.
  • the lock mechanism 9 engages the movable pawl 4A with the lock teeth 26 by moving the movable pawl 4A as described above while the winding drum 10 rotates by a predetermined amount in the drawing direction P.
  • the winding drum 10 is locked, and the rotation of the winding drum 10 in the drawing direction P is stopped.
  • the locking clutch 30 rotates relative to the take-up drum 10 in the pull-out direction P by urging the return spring 8A (see FIGS. 7 and 8).
  • the interlocking pin 4 ⁇ / b> C is pushed by the locking clutch 30 and moves in the guide groove 33.
  • the interlocking pin 4 ⁇ / b> C is guided by the guide groove 33 and moves inward in the radial direction of the locking clutch 30 along the guide groove 33.
  • the movable pawl 4A moves away from the lock tooth 26 by the movement of the interlocking pin 4C and returns to the unlocked position. Thereby, the lock of the winding drum 10 by the lock mechanism 9 is released.
  • the locking clutch 30 includes a ratchet wheel 36 having a plurality of teeth 35, an arm support portion 37 that rotatably supports the lock arm 40, and a support pin 38 that supports the sensor spring 8B.
  • the ratchet wheel 36 is composed of an annular member formed on the outer periphery of the locking clutch 30 and is rotatable together with the winding drum 10.
  • the plurality of teeth 35 are inclined so as to stop only the rotation of the ratchet wheel 36 in the pull-out direction P, and are formed on the entire outer periphery of the ratchet wheel 36.
  • the lock arm 40 is rotatable with the winding drum 10 and rotates in the drawing direction P and the winding direction M together with the winding drum 10 and the locking clutch 30. Under normal conditions, the other end 42 of the lock arm 40 is maintained in contact with the first stopper 39 ⁇ / b> A of the locking clutch 30 by the urging of the sensor spring 8 ⁇ / b> B.
  • a predetermined acceleration that is, when the acceleration in the pulling direction P (rotational acceleration) of the winding drum 10 rotating in the pulling direction P exceeds a predetermined acceleration).
  • a delay due to inertia occurs in the lock arm 40 with respect to the rotating locking clutch 30.
  • the lock arm 40 rotates while compressing the sensor spring 8 ⁇ / b> B, and the one end 41 of the lock arm 40 is displaced outward in the radial direction of the locking clutch 30.
  • the lock mechanism 9 of the retractor 1 operates.
  • the lock arm 40 is a displacement member that can be displaced in the lock operation direction in accordance with the acceleration in the pull-out direction P of the winding drum 10, and is displaced in a predetermined lock operation direction in response to the acceleration.
  • the lock operation direction is a direction for operating the lock mechanism 9, and here is a direction in which the one end portion 41 of the lock arm 40 is displaced radially outward of the locking clutch 30.
  • the lock mechanism 9 is operated by the lock arm 40 displaced in the lock operation direction.
  • the lock arm 40 may be displaced, or the lock arm 40 may be displaced relative to the winding drum 10 and the locking clutch 30.
  • the lock arm 40 may be displaced relative to the winding drum 10 and the locking clutch 30 while being displaced. Therefore, the displacement of the lock arm 40 includes such a displacement in each aspect.
  • the lock mechanism 9 (see FIG. 2) is operated by the displacement of the lock arm 40 in the lock operation direction, and stops the rotation of the take-up drum 10 in the drawing direction P. In addition, the lock mechanism 9 is operated by stopping the rotation of the ratchet wheel 36 in the pulling direction P, and stops the rotation of the winding drum 10 in the pulling direction P.
  • the retractor 1 includes, in the mechanism cover unit 6, a means for stopping the lock arm 40 displaced in the lock operating direction (lock arm stop means) and a means for stopping the rotation of the ratchet wheel 36 (ratchet wheel stop). Means).
  • the locking clutch 30 stops.
  • the movable pawl 4A of the lock mechanism 9 moves to the lock position, and the take-up drum 10 is locked.
  • the mechanism cover unit 6 (see FIGS. 3 and 4) includes an acceleration sensor 50 that detects vehicle acceleration, a mechanism cover 6A that houses the clutch unit 8, a regulating member 56 that regulates the displacement of the lock arm 40, and a retractor. 1 has switching means 60 for switching the state of 1.
  • the acceleration sensor 50 is a ratchet wheel stop means, and is an emergency lock activation device that activates the lock mechanism 9 in the event of a vehicle emergency.
  • the acceleration sensor 50 includes a sensor holder 51, an inertia mass body 52, and a sensor lever 53.
  • the inertia mass body 52 is made of a metal sphere and is movably disposed in the recess of the sensor holder 51.
  • the sensor lever 53 covers the inertial mass body 52 from above and is attached to the sensor holder 51 so as to be movable in the vertical direction.
  • FIG. 11 is a perspective view of the acceleration sensor 50, the mechanism cover 6 ⁇ / b> A, and the regulating member 56.
  • the mechanism cover 6A includes a cylindrical clutch housing portion 6B that houses the locking clutch 30, a sensor housing portion 6C that houses the acceleration sensor 50, and a sensor cover that covers the acceleration sensor 50 in the sensor housing portion 6C. 6D.
  • the lock claw 54 of the sensor lever 53 protrudes upward and is disposed in the opening 6E of the clutch housing 6B.
  • the mechanism cover 6A (see FIG. 11) includes an annular wall 6F formed in the clutch housing portion 6B, a stop portion 6G formed on the inner periphery of the annular wall 6F, and a center support portion located at the center of the annular wall 6F. 6H and an insertion hole 6I that penetrates the center support 6H.
  • a cap 17 (see FIG. 7) fixed to the first shaft 12 is inserted into the insertion hole 6I, and the first shaft 12 of the winding shaft 10 is rotatably supported by the center support portion 6H.
  • the locking clutch 30, the ratchet wheel 36, and the lock arm 40 are accommodated in the clutch accommodating portion 6B (see FIGS. 11 and 12).
  • the ratchet wheel 36 is disposed between the inner periphery of the clutch housing 6B and the outer periphery of the annular wall 6F, and the lock arm 40 is disposed inside the annular wall 6F.
  • the center support portion 6H is also a restricting member support portion that rotatably supports the restricting member 56, and includes an annular convex portion that protrudes into the clutch housing portion 6B.
  • the restricting member 56 includes a holding portion 57 that holds the lock arm 40 and an attachment portion 58 that is attached to the center support portion 6H.
  • the regulating member 56 is formed in a predetermined shape by bending the wire, and the attachment portion 58 is a clip that is fitted in the center support portion 6H.
  • the pressing portion 57 of the regulating member 56 has a linear shape and is arranged from the center support portion 6H (attachment portion 58) toward the outside in the radial direction of the locking clutch 30.
  • the distal end portion of the pressing portion 57 is bent toward the lock arm 40, and the lock arm 40 is in contact with the bent portion (contact portion 59) of the pressing portion 57.
  • the regulating member 56 is adjacent to the lock arm 40 inside the annular wall 6F, and rotates in the winding direction M and the drawing direction P around the center support portion 6H. During normal rotation of the winding drum 10, the regulating member 56 rotates in conjunction with the rotation of the locking clutch 30 and the lock arm 40.
  • FIG. 13 is a view showing the operation of the lock arm 40 when the webbing 2 is pulled out, and shows a part of the stop portion 6G and the clutch unit 8.
  • FIG. 13A the lock operating direction L of the lock arm 40 is indicated by an arrow.
  • the lock arm 40 is displaced in the lock operation direction L by rotation, the one end portion 41 of the lock arm 40 is displaced toward the stop portion 6G, and the other end portion 42 of the lock arm 40 is the pressing portion 57 of the regulating member 56. Displace towards
  • the locking clutch 30 and the lock arm 40 together with the take-up drum 10 rotate integrally in the withdrawal direction P.
  • the one end portion 41 of the lock arm 40 is disposed at a position away from the stop portion 6G (engagement tooth 6J), and the lock arm 40 is maintained in a state of not being engaged with the stop portion 6G.
  • the lock arm 40 When the acceleration in the pulling-out direction P of the winding drum 10 exceeds a predetermined acceleration due to the rapid pull-out of the webbing 2, the lock arm 40 is locked in the lock operating direction L according to the acceleration in the pulling-out direction P of the winding drum 10. (See FIG. 13B). Accordingly, the lock arm 40 is displaced by rotation and comes into contact with the third stopper 39C of the locking clutch 30. Moreover, the one end part 41 of the lock arm 40 approaches the stop part 6G, and engages with the engaging tooth 6J. The stop portion 6G engages with the lock arm 40 displaced in the lock operation direction L, and stops the lock arm 40.
  • the locking arm 40 locks the locking clutch 30 and the rotation of the locking clutch 30 in the pull-out direction P stops. Accordingly, the lock mechanism 9 is activated to lock the winding drum 10 by the movable pawl 4A. The lock mechanism 9 stops the rotation of the take-up drum 10 in the pull-out direction P, and the webbing 2 is pulled out. Therefore, the stop portion 6G of the lock arm 40 constitutes a part of the lock mechanism 9. Further, the stop portion 6G and the lock mechanism 9 constitute a webbing sensitive lock mechanism that stops the pull-out of the webbing 2 in response to the sudden pull-out of the webbing 2.
  • the locking clutch 30 When the one end 41 of the lock arm 40 is disengaged from the engaging teeth 6J, the locking clutch 30 is unlocked.
  • the lock arm 40 is released from the stop portion 6G and displaced in the direction opposite to the lock operation direction L. Thereafter, the winding drum 10 is released from the load of the webbing 2 and rotates in the winding direction M in accordance with the winding of the webbing 2.
  • the locking clutch 30 rotates relative to the take-up drum 10 in the pull-out direction P, and the lock of the take-up drum 10 by the lock mechanism 9 is released. Thereafter, the webbing 2 can be pulled out and taken up.
  • FIG. 14 is a diagram illustrating the operation of the lock arm 40 during winding of the webbing 2, and shows a part of the stop portion 6 ⁇ / b> G and the clutch unit 8.
  • the locking clutch 30 and the lock arm 40 rotate together with the winding drum 10 in the winding direction M.
  • the pressing portion 57 of the restricting member 56 comes into contact with the other end portion 42 of the lock arm 40 and is pressed in the winding direction M by the other end portion 42.
  • the regulating member 56 rotates in the winding direction M together with the lock arm 40.
  • the lock mechanism 9 is erroneously operated due to the reaction of the rotation stop of the winding drum 10. That is, with respect to the locking clutch 30 that has stopped rotating, the lock arm 40 is displaced in the lock operation direction L (here, the winding direction M) by the inertial force, and the lock mechanism 9 is operated.
  • the lock mechanism 9 is actuated, the rotation of the winding drum 10 in the pulling direction P is stopped, and the webbing 2 cannot be pulled out from the winding drum 10.
  • the restricting member 56 restricts the displacement of the lock arm 40 in the lock operation direction L due to the reaction of the rotation stop of the take-up drum 10 in the take-up direction M. To prevent.
  • the pressing portion 57 contacts the other end portion 42 of the lock arm 40 by the rotation of the winding drum 10 in the winding direction M, and contacts the lock arm 40 during the rotation of the winding drum 10 in the winding direction M. Maintained. Further, the pressing portion 57 presses the lock arm 40 that is displaced in the lock operation direction L by the reaction of the rotation stop of the winding drum 10 in the winding direction M.
  • the lock arm 40 has an engaging portion 44 that engages with the pressing portion 57 of the regulating member 56 when displaced in the lock operation direction L.
  • the engaging portion 44 is a convex portion formed at the other end portion 42 of the lock arm 40 and protrudes toward the lock operation direction L side.
  • the sliding part 45 of the lock arm 40 is a part close to the engaging part 44 of the lock arm 40.
  • the pressing portion 57 slides on the sliding portion 45 and approaches the engaging portion 44 or leaves the engaging portion 44. In this state, the engaging portion 44 does not engage with the pressing portion 57, and the regulating member 56 rotates in the winding direction M together with the lock arm 40 while sliding on the sliding portion 45.
  • the pressing portion 57 and the engaging portion 44 approach each other, and the engaging portion 44 engages with the pressing portion 57.
  • the pressing portion 57 slides the sliding portion 45 formed of a flat surface or a curved surface toward the engaging portion 44 and contacts the engaging portion 44.
  • the engaging portion 44 formed of a convex portion comes into contact with the contact portion 59 of the pressing portion 57 and is caught, stops the movement of the pressing portion 57, and engages with the pressing portion 57.
  • the engaging part 44 restrains the pressing part 57 of the regulating member 56 and prevents the movement (including sliding and rotation) of the pressing part 57.
  • the engagement portion 44 prevents the pressing portion 57 from moving, and the regulating member 56 stops.
  • the engaging portion 44 of the lock arm 40 has an engaging surface 46 that contacts the pressing portion 57 of the restricting member 56, and the engaging surface 46 engages the pressing portion 57.
  • the engaging surface 46 is formed of a flat surface or a curved surface, and is formed so as not to apply a force in a direction in which the pressing portion 57 is moved to the pressing portion 57.
  • the rotation center N1 of the restriction member 56 is arranged at a position different from the rotation center N2 of the lock arm 40 by the center support portion 6H which is a support member support portion.
  • the rotation radius R ⁇ b> 2 of the engaging portion 44 is set larger than the rotation radius R ⁇ b> 1 of the pressing portion 57.
  • the rotation radius R2 of the engagement portion 44 is the distance from the rotation center N2 of the lock arm 40 to the contact point between the engagement portion 44 and the pressing portion 57, and the rotation radius R1 of the pressing portion 57 is the rotation center N1 of the regulating member 56. To the contact point between the engaging portion 44 and the pressing portion 57.
  • the displacement direction (rotation locus) S2 due to the rotation of the engaging portion 44 is set to a direction intersecting the rotation direction (rotation locus) S1 of the pressing portion 57 (contact portion 59).
  • the engaging portion 44 is displaced in the direction of pressing the pressing portion 57 of the regulating member 56 together with the lock arm 40, and the front of the displacement direction S2 is reached. It engages with the holding part 57 located in the position. Subsequently, the engaging portion 44 is pressed against the pressing portion 57 and applies a force in a direction that prevents the pressing portion 57 from moving to the pressing portion 57.
  • the normal line T of the engaging surface 46 passes through the rotation center N ⁇ b> 1 of the regulating member 56. Therefore, the pressing portion 57 is pressed against the center support portion 6 ⁇ / b> H by the engaging portion 44, and only the force toward the rotation center N ⁇ b> 1 is applied to the pressing portion 57.
  • the movement of the pressing portion 57 is blocked by the force applied from the engaging portion 44, and the regulating member 56 is maintained in the regulated state. Further, the operation of the lock mechanism 9 due to the displacement of the lock arm 40 is prevented, and occurrence of an end lock in the retractor 1 is suppressed.
  • the engagement portion 44 is displaced in the opposite direction of the displacement direction S2 by the urging of the sensor spring 8B. It moves away from the holding part 57 smoothly. As a result, the engagement between the engaging portion 44 and the pressing portion 57 is released.
  • the surface that contacts the engaging portion 44 of the pressing portion 57 may be formed in a curved surface, or may be formed in a shape having a flat surface or a corner portion.
  • the pressing portion 57 may be in contact with the engaging portion 44 by a line, or may be in contact with the engaging portion 44 at a point or a surface.
  • the engaging portion 44 may be formed so that the normal line T of the engaging surface 46 deviates from the rotation center N ⁇ b> 1 of the restricting member 56. For example, by shifting the normal line T of the engagement surface 46 to the rotation center N2 side of the lock arm 40, a force on the opposite side of the rotation direction S1 is applied from the engagement portion 44 to the pressing portion 57.
  • a portion (such as a hook-shaped portion) that interferes with the rotation of the pressing portion 57 may be formed in the engaging portion 44.
  • the holding portion 57 may be held by the engaging portion 44 and the engaging portion 44 may be engaged with the holding portion 57 by the static frictional force between the holding portion 57 and the engaging portion 44.
  • the contact point between the engaging portion 44 and the pressing portion 57 is connected to the rotation center N1 of the regulating member 56, and a virtual line is drawn between the contact point and the rotation center N1.
  • the angle formed by the imaginary line and the normal T of the engagement surface 46 normal angle
  • the pressing portion 57 is held by the engagement portion 44 by the static friction force.
  • the friction angle ⁇ is about 8.5 degrees. Therefore, if the normal angle is 8.5 degrees or less, the engagement portion 44 is maintained in the engaged state with the pressing portion 57 regardless of the direction of the normal line T of the engagement surface 46.
  • the normal T may be shifted from the rotation center N1 of the restricting member 56 toward the rotation direction S1 of the pressing portion 57. Further, the direction of the normal T may be changed so as to satisfy the condition that the normal angle is equal to or less than the friction angle ⁇ . As long as the condition that the normal angle is equal to or less than the friction angle ⁇ is satisfied, an error may occur in the normal angle.
  • the retractor 1 includes a release means 18 that releases the engagement between the lock arm 40 and the stop portion 6G while the lock mechanism 9 is operating. Even if the end lock is generated in the retractor 1, the release means 18 releases the engagement between the lock arm 40 and the stop portion 6 ⁇ / b> G to release the end lock of the retractor 1.
  • the release means 18 includes a protrusion 16 formed on the winding drum 10 and a through groove 34 formed on the locking clutch 30. The protrusion 16 protrudes from the winding drum 10 toward the lock arm 40, and moves in the through groove 34 in the rotation direction of the winding drum 10. Further, the protrusion 16 passes through the through groove 34 and contacts the lock arm 40.
  • FIGS. 16 and 17 are views showing the operation of the retractor 1 at the time of end-locking, and the main part of the retractor 1 is shown in the same manner as FIG. 16 and 17 show a part of the stop portion 6G and the clutch unit 8, and also show a cross section of the lock arm 40.
  • the movable pawl 4A and a part of the lock teeth 26 are also shown in FIGS.
  • the protrusion 16 is disposed in a recess 47 formed in the lock arm 40, moves in the recess 47, and contacts the lock arm 40.
  • the protrusion 16 pushes the portion on the one end 41 side of the lock arm 40 in the pulling direction P (see FIG. 16D). Accordingly, the protrusion 16 is also a rotation transmission member that directly pushes the lock arm 40 and transmits the rotation of the take-up drum 10 in the drawing direction P to the lock arm 40.
  • the release means 18 has a transmission mechanism 19 that transmits the rotation of the winding drum 10 to the lock arm 40 by the protrusion 16.
  • the lock mechanism 40 is removed from the stop portion 6G by the transmission mechanism 19, and the end lock of the retractor 1 is released.
  • the transmission mechanism 19 moves in the drawing direction P of the winding drum 10 from the start of operation of the locking mechanism 9 until the rotation of the winding drum 10 in the drawing direction P is completely stopped by the locking mechanism 9.
  • the rotation is transmitted to the lock arm 40.
  • the transmission mechanism 19 includes a rotation transmission member including the protrusions 16.
  • the protrusion 16 contacts the lock arm 40 and pushes the lock arm 40 as the take-up drum 10 rotates in the pull-out direction P.
  • the transmission mechanism 19 (protrusion 16) applies a force to the lock arm 40 and displaces the lock arm 40 in a direction in which the engagement with the stop portion 6G is released (release direction).
  • the lock arm 40 is disengaged from the stop portion 6G by the transmission mechanism 19 of the release means 18, and the engagement between the lock arm 40 and the stop portion 6G is released (see FIG. 17A).
  • the engaging claw 4B is in a position where it can come into contact with the lock teeth 26 and comes into contact with the lock teeth 26 as the take-up drum 10 rotates in the pull-out direction P. Thereafter, the engagement of the movable pawl 4A and the lock teeth 26 is completed with the rotation of the winding drum 10 in the drawing direction P.
  • FIG. 18 is a diagram showing a process of releasing the engagement between the lock arm 40 and the stop portion 6G, and shows the lock arm 40 and the stop portion 6G in an enlarged manner.
  • the release means 18 pushes the lock arm 40 by the transmission mechanism 19 and displaces the lock arm 40 in the release direction while moving the lock arm 40 along the stop portion 6G.
  • the protrusion 16 of the transmission mechanism 19 pushes the one end 41 of the lock arm 40 toward the engaging tooth 6J of the stop 6G (arrow Q1).
  • one end 41 of the lock arm 40 starts to move along the engagement surface of the engagement tooth 6J and moves toward the tip of the engagement tooth 6J (arrow Q2).
  • the lock arm 40 rotates about the arm support portion 37 and the arm support portion 37 of the lock arm 40 moves (arrow Q3). Further, after the arm support portion 37 starts to move, the locking clutch 30 is pushed in the winding direction M by the arm support portion 37. As a result, the lock arm 40 rotates in the winding direction M together with the locking clutch 30, and the one end 41 of the lock arm 40 moves toward the tip of the engagement tooth 6J. At the same time, the lock arm 40 rotates around the rotation center N2 (arm support portion 37) in a direction opposite to the lock operation direction L (release direction), and the entire lock arm 40 is displaced in a direction away from the engagement teeth 6J.
  • the protrusion 16 of the transmission mechanism 19 contacts the contact surface (contact portion) 47A of the lock arm 40 in the recess 47 of the lock arm 40.
  • the recess 47 is formed on the winding arm 10 side of the lock arm 40, and the contact surface 47 ⁇ / b> A is a smooth inner surface of the recess 47.
  • the protrusion 16 slides along the contact surface 47 ⁇ / b> A in the recess 47 and smoothly moves toward the one end 41 of the lock arm 40. Along with this movement, the protrusion 16 pushes the one end 41 of the lock arm 40 toward the engaging teeth 6J of the stop 6G without hindering the movement of the lock arm 40.
  • the lock arm 40 and the locking clutch 30 are rotated by the protrusion 16 and the engaging tooth 6J of the stop portion 6G, and the lock arm 40 is displaced.
  • the winding drum 10 rotates in the winding direction M, and the locking clutch 30 rotates relative to the winding drum 10 in the drawing direction P (see FIG. 17C). Since the locking clutch 30 is unlocked before the webbing 2 is wound, after the winding drum 10 rotates in the winding direction M, the locking clutch 30 starts to rotate in the drawing direction P at an early stage. Further, the interlocking pin 4C of the movable pawl 4A is guided by the guide groove 33, and moves to a position where the engaging claw 4B of the movable pawl 4A is disengaged from the lock teeth 26.
  • the acceleration sensor 50 is activated by the vibration of the vehicle or the like, and the lock claw 54 of the sensor lever 53 may be engaged with the teeth 35 of the ratchet wheel 36.
  • the lock pawl 54 may be removed from the teeth 35 by utilizing the rotation of the locking clutch 30 in the winding direction M by the release means 18. Thereby, the stop of the ratchet wheel 36 by the acceleration sensor 50 is released.
  • the protrusion 16 of the winding drum 10 may be brought into contact with the outer surface of the lock arm 40 and the lock arm 40 may be pushed.
  • the rotation of the winding drum 10 may be transmitted to the lock arm 40 by bringing a protrusion (rotation transmission member) formed on the lock arm 40 into contact with the side surface of the winding drum 10.
  • the rotation of the winding drum 10 may be indirectly transmitted to the lock arm 40 via a rotation transmission member without being directly transmitted to the lock arm 40.
  • the interlocking pin 4C of the movable pawl 4A may be used as a rotation transmission member.
  • the other end 42 of the lock arm 40 is partially formed toward the guide groove 33, and the interlocking pin 4 ⁇ / b> C is formed toward the other end 42 of the lock arm 40.
  • the other end portion 42 of the lock arm 40 and the interlocking pin 4C are formed so as to be in contact with each other, and the other end portion 42 of the lock arm 40 is pushed by the interlocking pin 4C that moves in the guide groove 33.
  • the rotation of the winding drum 10 is transmitted to the lock arm 40, and the lock arm 40 is displaced in the release direction.
  • the switching means 60 includes an actuating member 61 that operates the lock mechanism 9, an arm-shaped disposing member 62 that disposes the actuating member 61 at a predetermined position, a disc-shaped moving member 70 that moves the disposing member 62, and a disposing member.
  • a first urging unit 63 that is an urging unit, a second urging unit 64 that is an urging member urging unit, and a speed reduction mechanism 80 are provided.
  • the reduction mechanism 80 has a drive gear 81, an intermediate gear 82, and a driven gear 83, and is connected to the winding drum 10 and the moving member 70 by a plurality of combined gears 81, 82, 83.
  • the actuating member 61 and the disposing member 62 are rotatably attached to a columnar rotating shaft (rotating shaft) 6K formed on the mechanism cover 6A (see FIG. 3).
  • the first urging means 63 is composed of an elastically deformable urging member (spring, rubber, elastic member, etc.) (here, a tension coil spring), and is attached to the arrangement member 62 and the mechanism cover 6A.
  • the second urging means 64 is composed of an elastically deformable urging member (spring, rubber, elastic member, etc.) (here, a torsion spring), and is attached to the operating member 61 and the mechanism cover 6A.
  • the center hole 71 of the moving member 70 is rotatably attached to the annular support portion 6L of the mechanism cover 6A, and the moving member 70 rotates around the annular support portion 6L.
  • the cap 17 fixed to the first shaft 12 is inserted into the insertion hole 6I and disposed in the annular support portion 6L.
  • the drive gear 81 is fixed to the cap 17 in the annular support portion 6 ⁇ / b> L, and rotates integrally with the first shaft 12 and the cap 17 of the winding drum 10 at the center of the moving member 70.
  • the driven gear 83 is an internal gear formed on the inner convex portion 72 of the moving member 70 and is larger than the drive gear 81 and the intermediate gear 82.
  • the intermediate gear 82 has a first gear 82A larger than the drive gear 81 and a second gear 82B (see FIG. 4) smaller than the first gear 82A, and is rotatably attached to the outer surface cover 6V.
  • the first gear 82A meshes with the drive gear 81, and the second gear 82B meshes with the driven gear 83.
  • the outer cover 6 ⁇ / b> V is attached to the mechanism cover 6 ⁇ / b> A and covers the switching unit 60.
  • the speed reduction mechanism 80 decelerates the rotation of the winding drum 10 and transmits it to the moving member 70, and rotates the moving member 70 at a rotation speed slower than the rotation speed of the winding drum 10.
  • the moving member 70 rotates by a predetermined angle of 360 ° or less while the entire webbing 2 is pulled out. Further, the moving member 70 rotates in the direction opposite to the rotation direction of the winding drum 10.
  • the actuating member 61 and the disposing member 62 are rotatably attached to one rotating shaft 6K so as to overlap in the axial direction of the rotating shaft 6K, and are combined to be rotatable in conjunction with each other.
  • the actuating member 61 is disposed on the ratchet wheel 36 side with respect to the moving member 70, and the disposing member 62 is disposed along the surface on the inner convex portion 72 side of the moving member 70.
  • the moving member 70 is a cam member that moves the arrangement member 62 by rotation, and a control member that controls the position of the operation member 61 by the arrangement member 62.
  • the arrangement member 62 is a cam follower that follows the moving member 70 and a switching lever that switches the state of the retractor 1.
  • the operation member 61 is an interlocking member that interlocks with the arrangement member 62, and is an operation switch (switching switch) that switches between the operation and non-operation of the lock mechanism 9.
  • the lock mechanism 9 is actuated by the actuating member 61 to stop the rotation of the take-up drum 10 in the pull-out direction P and allow the take-up drum 10 to rotate in the take-up direction M.
  • the actuating member 61 is a meshing member that meshes with the teeth 35 of the ratchet wheel 36 in the mechanism cover 6 ⁇ / b> A, and stops the rotation of the ratchet wheel 36 in the pull-out direction P by meshing with the teeth 35.
  • the lock mechanism 9 is operated when the rotation of the ratchet wheel 36 in the pull-out direction P due to the engagement of the operation member 61 and the teeth 35 is stopped. Therefore, the switching means 60 provided with the operation member 61 is also a ratchet wheel stop means.
  • the actuating member 61 and the disposing member 62 rotate around the rotation shaft 6K and move in the same rotation direction. That is, the retractor 1 includes a rotating means 65 that moves the operating member 61 and the disposing member 62 by rotation, and the rotating means 65 has one rotating shaft 6K.
  • the arrangement member 62 is moved by the rotation means 65 by rotation together with the operation member 61 (arrow H in FIG. 19).
  • the operating member 61 includes a non-operating position E1 (a position indicated by a solid line in FIG. 19) where the locking mechanism 9 is not operated and an operating position E2 where the locking mechanism 9 is operated. It moves (rotates) to (the position indicated by the dotted line in FIG. 19).
  • the non-operating position E1 of the operating member 61 is a position where the operating member 61 does not mesh with the teeth 35 of the ratchet wheel 36 (non-meshing position).
  • the operating position E2 of the operating member 61 is a position (meshing position) where the operating member 61 meshes with the teeth 35 of the ratchet wheel 36.
  • the operation member 61 is moved from the non-operating position E1 (non-meshing position) to the operating position E2 (meshing position) by the arrangement member 62, and operates the lock mechanism 9.
  • the second urging means 64 always urges the operating member 61 toward the operating position E2.
  • the operating member 61 is pressed against the ratchet wheel 36 by the second urging means 64 when it contacts the ratchet wheel 36.
  • the arrangement member 62 is moved in the direction in which the operating member 61 is moved to the non-operating position E1 by the first biasing means 63 (the direction in which the operating member 61 is separated from the ratchet wheel 36) (here, the radius of the moving member 70). It is always biased inward.
  • the actuating member 61 is urged to rotate counterclockwise by the second urging means 64, and the disposing member 62 is urged to rotate clockwise by the first urging means 63. ing.
  • the arrangement member 62 is located on the inner side in the radial direction of the moving member 70, and It arrange
  • the first position F1 of the disposing member 62 is a position where the operating member 61 is disposed at the non-operating position E1, and the operating member 61 is disposed at the non-operating position E1 by the disposing member 62.
  • the arrangement member 62 is arranged at the first position F1 and the second position F2 by the rotation of the rotation means 65. At the same time, the arrangement member 62 moves together with the operation member 61 to arrange the operation member 61 at the non-operation position E1 and the operation position E2. Further, the first biasing means 63 biases the arrangement member 62 toward the first position F1. In the state in which the arrangement member 62 is arranged at the second position F2, the urging force of the first urging means 63 is larger than the urging force of the second urging means 64, and therefore the arrangement member 62 of the first urging means 63 Due to the urging, the actuator moves to the first position F1, and the operating member 61 moves to the non-operating position E1.
  • FIG. 20 is a perspective view of the actuating member 61 and the disposing member 62
  • FIG. 21 is a cross-sectional view of Y2 part of FIG.
  • the arrangement member 62 includes a cylindrical attachment portion 62A attached to the rotation shaft 6K, an arm portion 62B protruding from the attachment portion 62A, and a contact portion 62C formed of a protrusion formed at the tip of the arm portion 62B.
  • the contact portion 62C moves in contact with the moving member 70
  • the arm portion 62B rotates around the attachment portion 62A, and the arrangement member 62 moves.
  • the meshing pawl 61C and the teeth 35 of the check wheel 36 are formed so as to mesh only when the ratchet wheel 36 rotates in the pull-out direction P.
  • the meshing pawl 61C constitutes a part of the lock mechanism 9, and the lock mechanism 9 includes a ratchet wheel 36 and a meshing pawl 61C.
  • the actuating member 61 is arranged at a position where the meshing pawl 61C meshes with the teeth 35 by moving to the actuating position E2, and is arranged at a position where the meshing pawl 61C is not meshed with the teeth 35 by moving to the non-actuating position E1.
  • the lock mechanism 9 operates in accordance with the engagement between the teeth 35 and the meshing pawl 61C.
  • the meshing pawl 61C of the actuating member 61 meshes only with the teeth 35 of the ratchet wheel 36 that rotates in the pull-out direction P.
  • the meshing pawl 61 ⁇ / b> C is pushed by the teeth 35.
  • the operating member 61 is displaced along the teeth 35 while narrowing the gap 66, and gets over the plurality of teeth 35 in order.
  • the retractor 1 includes the displacement mechanism 67 of the operating member 61 configured as described above.
  • the meshing pawl 61C of the actuating member 61 is moved along the teeth 35 of the ratchet wheel 36 rotating in the winding direction M together with the winding drum 10 by the displacement mechanism 67. Displace.
  • the meshing pawl 61 ⁇ / b> C is reliably maintained in a state where it can mesh with the plurality of teeth 35 during the rotation of the ratchet wheel 36 in the winding direction M.
  • the meshing pawl 61C meshes with the teeth 35 again.
  • Arrangement member 62 moves together with operation member 61 to move operation member 61 to non-operation position E1 and operation position E2.
  • the actuating member 61 and the disposing member 62 control the rotatable direction of the ratchet wheel 36 and switch the state of the retractor 1.
  • the ratchet wheel 36 can be rotated in the winding direction M and the drawing direction P, and the state of the retractor 1 is switched to the emergency lock state.
  • the operation member 61 is moved to the operation position E2 by the arrangement member 62, the ratchet wheel 36 can be rotated only in the winding direction M, and the state of the retractor 1 is switched to the automatic lock state.
  • the moving member 70 By the moving member 70, the arrangement member 62 is arranged at the first position F1 and the second position F2, and the operation member 61 is arranged at the non-operation position E1 and the operation position E2.
  • the moving member 70 rotates in conjunction with the rotation of the winding drum 10, and moves the arrangement member 62 to the first position F1 and the second position F2 with the rotation.
  • the moving member 70 includes an inner convex portion 72, an outer convex portion 73 surrounding the inner convex portion 72, a first maintaining portion 74 that maintains the arrangement member 62 at the first position F1, a changing portion 75, and an arrangement member.
  • the moving part 76 which moves 62, the 2nd maintenance part 77 which maintains the arrangement
  • the inner convex part 72 is an annular convex part formed inside the moving member 70 in the radial direction.
  • the outer convex portion 73 is an annular convex portion formed on the outer side in the radial direction of the moving member 70, and is formed on the outer side of the inner convex portion 72 on one surface of the moving member 70.
  • the center of the inner convex part 72 and the center of the outer convex part 73 coincide with the rotation center of the moving member 70, and the outer convex part 73 is formed to have a diameter larger than the diameter of the inner convex part 72.
  • the 1st maintenance part 74 consists of an annular course between inner side convex part 72 and outside convex part 73 (the 2nd maintenance part 77). In the first maintaining part 74, the arrangement member 62 (contact part 62 ⁇ / b> C) is arranged in the vicinity of the inner convex part 72 without contacting the inner convex part 72, and relatively moves along the inner convex part
  • the contact portion 62C of the disposing member 62 is disposed on the first maintaining portion 74 (see FIG. 22A). Thereby, the arrangement member 62 is maintained at the first position F1, and the operation member 61 is maintained at the non-operation position E1.
  • the disposing member 62 (contact portion 62 ⁇ / b> C) relatively moves along the first maintaining portion 74. Further, as the webbing 2 is pulled out and taken up, the disposing member 62 moves relatively in the circumferential direction of the moving member 70 in the first maintaining portion 74.
  • the contact portion 62C is disposed in the first maintaining portion 74, and the disposing member 62 is moved to the first position F1 by the first maintaining portion 74. Maintained. As a result, the state of the retractor 1 is maintained in the emergency lock state.
  • the arrangement member 62 When the webbing 2 is pulled out from the winding drum 10 by a predetermined length (see FIGS. 22B and 22C), the arrangement member 62 is relatively displaced along the change portion 75, and the position of the arrangement member 62 is changed by the change portion 75. Is changed from the first maintaining unit 74 to the moving position by the moving unit 76.
  • the moving position by the moving unit 76 is a position where the arrangement member 62 can be moved by the moving unit 76.
  • the arrangement member 62 moves to the movement position and then moves by the movement unit 76.
  • the changing unit 75 is a slope inclined from the first maintaining unit 74 toward the tip of the moving unit 76, and is formed at the terminal end of the first maintaining unit 74.
  • the moving part 76 is composed of an inclined convex part that is inclined from the moving position by the moving part 76 toward the second maintaining part 77 with respect to the rotation direction of the moving member 70, and is arranged at the front end of the second maintaining part 77. Connected. Further, when the webbing 2 completely drawn out from the take-up drum 10 is taken up on the take-up drum 10, the arrangement member 62 is moved by the moving unit 76. At that time, the contact portion 62 ⁇ / b> C of the arrangement member 62 is guided by the moving portion 76 and moves toward the second maintaining portion 77 while being pressed against the moving portion 76 by the urging force of the first urging means 63. .
  • 2nd maintenance part 77 consists of a circular arc part formed in the shape of an arc on the outside of the 1st maintenance part 74 in the radial direction, and encloses a part of 1st maintenance part 74.
  • the arrangement member 62 comes into contact with the second maintaining portion 77 and is maintained at the second position F ⁇ b> 2 by the second maintaining portion 77.
  • the second maintaining portion 77 is formed of an arc-shaped convex portion that constitutes a part of the outer convex portion 73 and is formed to have a predetermined length along the circumferential direction of the moving member 70.
  • the arrangement member 62 is maintained at the second position F2 by the second maintaining unit 77 until the webbing 2 is wound around the winding drum 10 by a predetermined length (a predetermined winding length). Further, when the webbing 2 is wound around the winding drum 10 by a predetermined length, the arrangement member 62 is detached from the terminal end 79 of the second maintaining portion 77 and is moved toward the first maintaining portion 74 by the release portion 78. To be released. The arrangement member 62 is detached from the end portion 79 before the webbing 2 is completely wound around the winding drum 10.
  • the contact part 62C of the arrangement member 62 is detached from the second maintaining part 77 after reaching the terminal part 79. Accordingly, the contact portion 62 ⁇ / b> C is released from the state pressed by the second maintenance portion 77, and the arrangement member 62 is released from the second maintenance portion 77.
  • the release portion 78 of the moving member 70 is a portion following the end portion 79 and includes a release region formed from the second maintenance portion 77 to the first maintenance portion 74. In the release portion 78, the arrangement member 62 moves from the second maintenance portion 77 to the first maintenance portion 74 toward the radially inner side of the movement member 70 without contacting the movement member 70.
  • the release part 78 removes the arrangement member 62 from the second maintenance part 77. It releases toward the 1st maintenance part 74 (refer FIG. 19). With this release, the arrangement member 62 is immediately moved from the second maintenance part 77 (second position F2) to the first maintenance part 74 (first position F1) by the urging of the first urging means 63. At the same time, the operating member 61 moves from the operating position E2 to the non-operating position E1, and the state of the retractor 1 is switched from the automatic lock state to the emergency lock state. Thereafter, the webbing 2 is wound around the winding drum 10 or pulled out from the winding drum 10.
  • the end lock can be released simply by pulling out the webbing 2 in the same manner as the normal webbing 2 is mounted. Since the end lock is released while the lock mechanism 9 is operated, it is not necessary to pull out the webbing 2 strongly, and the end lock is released only by pulling out the webbing 2 slightly. Since the lock arm 40 is displaced using the rotation of the winding drum 10, the force required to pull out the webbing 2 can be reduced. Therefore, the end lock can be easily and reliably released.
  • the lock arm 40 Since the lock arm 40 is moved along the stop portion 6G and displaced in the release direction, the engagement between the lock arm 40 and the stop portion 6G can be smoothly released. Further, the lock arm 40 can be removed from the stop portion 6G without difficulty.
  • the lock arm 40 When the lock arm 40 is rotated together with the locking clutch 30 and displaced in the release direction, the engagement between the lock arm 40 and the stop portion 6G can be released more smoothly. Further, the lock arm 40 can be easily detached from the stop portion 6G.
  • the lock arm 40 that is displaced in the release direction rotates while moving toward the tip of the engagement tooth 6J, and a force that rotates together with the locking clutch 30 is applied from the engagement tooth 6J. By doing in this way, the force which rotates with the locking clutch 30 can be generated with a simple configuration.
  • the lock arm 40 can be smoothly displaced in the release direction by the engagement teeth 6J.
  • the urging force of the first urging means 63 is applied to the second urging means 64 while the arrangement member 62 is maintained at the first position F 1. You may make it become larger than urging
  • the contact portion 62 ⁇ / b> C of the arrangement member 62 contacts the inner convex portion 72 in the first maintaining portion 74 and is pressed by the inner convex portion 72.
  • the movement member 70 may be elastically deformed without elastic deformation of the arrangement member 62.
  • the speed reduction mechanism 80 is not limited to the example of this embodiment, and a known speed reduction mechanism can be used.
  • the engaging pawl 61 ⁇ / b> C may be a member different from the operating member 61 without forming the engaging pawl 61 ⁇ / b> C on the operating member 61.
  • the operating member 61 moves the meshing pawl 61C to the non-meshing position and the meshing position.
  • the actuating member 61 and the disposing member 62 may be attached to different rotating shafts and rotate in conjunction with each other. By doing in this way, the arrangement space of the operation member 61 and the arrangement
  • clutch unit 9 ... lock mechanism, 10 ... winding drum, 11 ... -Insertion part, 12 ... 1st shaft, 13 ... 2nd shaft 14 ... Paul housing part, 15 ... recess, 16 ... protrusion, 17 ... cap, 18 ... release means, 19 ... transmission mechanism, 20 ... housing, 21 ... Back plate part, 22 ... 1st side wall part, 23 ... 2nd side wall part, 24 ... Fixing plate, 25 ... 1st opening part, 26 ... Lock tooth, 27 ... 1st 2 openings, 30 ... locking clutch, 31 ... center hole, 32 ... spring holder, 33 ... guide groove, 34 ... through groove, 35 ... tooth, 36 ... ratchet Wheel, 37...

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Automotive Seat Belt Assembly (AREA)
PCT/JP2014/053080 2013-02-12 2014-02-10 シートベルト用リトラクタ Ceased WO2014126059A1 (ja)

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US14/763,858 US9701278B2 (en) 2013-02-12 2014-02-10 Seat belt retractor
DE112014000484.7T DE112014000484T5 (de) 2013-02-12 2014-02-10 Sicherheitsgurtstraffer

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JP2013-024968 2013-02-12
JP2013024968A JP6045933B2 (ja) 2013-02-12 2013-02-12 シートベルト用リトラクタ

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Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9725068B2 (en) * 2011-12-27 2017-08-08 Autoliv Development Ab Self-locking belt retractor with deactivation of its belt webbing-sensitive control system operating in the retracting direction of the belt shaft
JP6250427B2 (ja) * 2013-02-12 2017-12-20 芦森工業株式会社 シートベルト用リトラクタ
DE102013015996B4 (de) * 2013-09-26 2022-07-28 Zf Automotive Germany Gmbh Gurtaufroller für einen Fahrzeug-Sicherheitsgurt
JP6549879B2 (ja) * 2015-04-03 2019-07-24 Ｊｏｙｓｏｎ Ｓａｆｅｔｙ Ｓｙｓｔｅｍｓ Ｊａｐａｎ株式会社 シートベルトリトラクタ及びシートベルト装置
JP6539102B2 (ja) * 2015-04-28 2019-07-03 Ｊｏｙｓｏｎ Ｓａｆｅｔｙ Ｓｙｓｔｅｍｓ Ｊａｐａｎ株式会社 シートベルトリトラクタ及びシートベルト装置
JP6509634B2 (ja) * 2015-05-22 2019-05-08 芦森工業株式会社 シートベルト用リトラクタ
JP6566725B2 (ja) * 2015-05-28 2019-08-28 Ｊｏｙｓｏｎ Ｓａｆｅｔｙ Ｓｙｓｔｅｍｓ Ｊａｐａｎ株式会社 シートベルトリトラクタ及びシートベルト装置
WO2018125708A1 (en) * 2016-12-30 2018-07-05 Key Safety Systems, Inc. Child seat detector with airbag or pretensioner suppression
DE102021106309A1 (de) * 2021-03-16 2022-09-22 Zf Automotive Germany Gmbh Gurtaufroller und Verfahren zum Lösen einer fehlsynchronisierten Sperrstellung eines Gurtaufrollers
JP2025167815A (ja) * 2024-04-26 2025-11-07 Ｊｏｙｓｏｎ Ｓａｆｅｔｙ Ｓｙｓｔｅｍｓ Ｊａｐａｎ合同会社 リトラクタ及びシートベルト装置

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08253103A (ja) * 1994-11-14 1996-10-01 Tokai Rika Co Ltd ウエビング巻取装置
JPH08276823A (ja) * 1995-04-04 1996-10-22 Tokai Rika Co Ltd ウエビング巻取装置
US20090189006A1 (en) * 2008-01-28 2009-07-30 Hyundai Motor Company Locking Unit For Seat Belt Retractor

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3233429B2 (ja) 1992-03-06 2001-11-26 タカタ株式会社 シートベルトリトラクタ
JP3251743B2 (ja) * 1993-11-24 2002-01-28 タカタ株式会社 シートベルトリトラクタ
DE60215914T2 (de) * 2002-04-08 2007-09-13 Key Safety Systems, Inc., Sterling Heights Gurtsensor
JP2004074828A (ja) * 2002-08-09 2004-03-11 Tokai Rika Co Ltd ウエビング巻取装置
JP2011246013A (ja) * 2010-05-27 2011-12-08 Tokai Rika Co Ltd ウェビング巻取装置及び回転検出部材の製造方法
JP5797381B2 (ja) * 2010-05-27 2015-10-21 株式会社東海理化電機製作所 ウェビング巻取装置
JP5781035B2 (ja) * 2012-08-10 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

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08253103A (ja) * 1994-11-14 1996-10-01 Tokai Rika Co Ltd ウエビング巻取装置
JPH08276823A (ja) * 1995-04-04 1996-10-22 Tokai Rika Co Ltd ウエビング巻取装置
US20090189006A1 (en) * 2008-01-28 2009-07-30 Hyundai Motor Company Locking Unit For Seat Belt Retractor

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JP6045933B2 (ja) 2016-12-14
JP2014151843A (ja) 2014-08-25
US9701278B2 (en) 2017-07-11
DE112014000484T5 (de) 2015-11-05
US20150360642A1 (en) 2015-12-17

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