JP2015140079A - Webbing winding device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a webbing winding device that enables a lock member to smoothly get away from a lock position.SOLUTION: In a webbing winding device 10, when a lock pawl 40 is brought away from a lock position in a state in which a tooth 82 of the lock pawl 40 is engaged with an internal tooth 80 of a lock gear 70, a winding-direction side surface 82A of the tooth 82 is brought into pressure contact with a pull-out direction side surface 80A of the internal tooth 80. Thus, the lock gear 70 is rotated in a winding direction.

Description

  The present invention relates to a webbing take-up device that can restrict rotation of a spool in a pull-out direction by engaging a lock member with a rotating member.

  In the lock mechanism of the webbing take-up device, the ratchet teeth of the lock member provided on the spool are engaged with the inner teeth of the ratchet formed on the frame in the event of a vehicle emergency, and rotation of the spool in the pull-out direction is prevented. There is a thing (refer the following patent document 1 as an example). In this type of webbing take-up device, when the lock member returns to the original position from the state in which the lock member is engaged with the ratchet inner teeth of the frame, it may be difficult to smoothly separate the lock member from the lock position. .

JP 2012-11913 A

  In view of the above fact, an object of the present invention is to obtain a webbing take-up device in which a lock member can be smoothly separated from a lock position.

  The webbing take-up device according to claim 1 is a spool that is rotated in a pull-out direction when the webbing is pulled out, a lock member that moves to a lock position in a vehicle emergency, and the lock member is moved to the lock position. Accordingly, the lock member is engaged, and the rotation member that prevents the spool from rotating in the pull-out direction, and the lock member is engaged with the rotation member in the winding direction of the rotation member. A rotation mechanism that enables rotation.

  According to the webbing take-up device of the first aspect, the turning member can be turned in the take-up direction by the turning mechanism. For this reason, when the lock member is moved from the lock position while the lock member is engaged with the rotation member, the rotation member is rotated in the winding direction by the lock member. Accordingly, the lock member can be smoothly separated from the lock position.

  The webbing take-up device according to claim 2 is the webbing take-up device according to claim 1, wherein the rotating member is urged in the pulling-out direction and the rotating member is moved in the pulling-out direction by the rotating mechanism. A holding member that holds the rotating member at a rotation position where the rotation is restricted is provided.

  In the webbing take-up device according to claim 2, the rotating member is urged in the pulling direction by the holding member, and is rotated at a rotating position where the rotating mechanism restricts the rotating member in the pulling direction. The moving member is held. For this reason, the lock member can be engaged with the rotation member in a state where the rotation of the rotation member in the pull-out direction is restricted.

  The webbing take-up device according to claim 3 is the webbing take-up device according to claim 2, wherein the release member for urging the lock member in a direction away from the lock position and the spool in the take-up direction are applied. A spool biasing member is provided, and the sum of the biasing force of the release member and the biasing force of the spool biasing member is made larger than the biasing force of the holding member.

  In the webbing take-up device according to claim 3, the lock member is urged away from the lock position by the urging force of the release member, and the spool is urged in the take-up direction by the urging force of the spool urging member. . Here, the sum of the biasing force of the release member and the biasing force of the spool biasing member is greater than the biasing force of the holding member. For this reason, in the engaged state of the lock member and the rotation member, the lock member can be separated from the lock position while rotating the rotation member in the winding direction by the biasing force of at least one of the release member and the spool biasing member. .

  The webbing take-up device according to claim 4 is the webbing take-up device according to claim 3, wherein the webbing take-up device is rotated in one of the drawing direction and the winding direction in a state in which the spool is prevented from rotating in the drawing direction. The lock member includes a rotating body separated from the lock position, and the release member is a spring that biases the rotating body toward the one side.

  According to the webbing take-up device of the fourth aspect, the lock member is separated from the lock position by rotating the rotating body in one of the draw-out direction and the take-up direction while preventing the spool from rotating in the draw-out direction. . Here, the release member is a spring that biases the rotating body to the one side, and the rotating body is rotated to the one side by the spring to separate the lock member from the lock position and rotate the rotating member in the winding direction. I can move.

  The webbing take-up device according to claim 5 is the webbing take-up device according to any one of claims 1 to 4, wherein the rotating member is rotatably supported; The rotation of the rotation member from the rotation position of the rotation member in a state where rotation of the spool in the pull-out direction is prevented to the rotation position of the rotation member where the support of the rotation member by the support member is canceled. And a plurality of engaging portions that are formed on the rotating member and are engaged with the locking member at a constant angle smaller than the moving angle.

  According to the webbing take-up device according to claim 5, a plurality of engaging portions are formed at a certain angle in the rotation direction of the rotation member on the rotation member supported rotatably on the support member. The lock member is engaged with the engaging portion. Here, the plurality of engaging portions are from the rotation position of the rotation member in the rotation preventing state in the spool pull-out direction to the rotation position of the rotation member where the support of the rotation member by the support member is released. It is formed at every fixed angle smaller than the rotation angle of the rotation member. For this reason, even if the rotation member is rotated in the winding direction by the lock member that is separated from the lock position, the support of the rotation member by the support member can be prevented or suppressed.

  As described above, in the webbing take-up device according to the present invention, the lock member engaged with the rotating member can be smoothly separated from the lock position.

It is a disassembled perspective view which shows the webbing take-up device according to the present embodiment. It is a side view of a webbing take-up device showing a state in which a lock member is not engaged with a rotating member, and is a view in which illustration of a sensor holder and a vehicle acceleration sensor is omitted. It is a side view corresponding to FIG. 2 which shows the state which the locking member engaged with the rotation member. FIG. 3 is a side view corresponding to FIG. 2 showing a state in which the lock member is pressed against the rotating member when the lock member returns. It is a side view which shows the assembly | attachment state with which the rotation member was mounted | worn with the leg plate of the flame | frame which is a supporting member. FIG. 6 is an enlarged front cross-sectional view taken along line 6-6 of FIG. 2, in which the rotating member shows a supporting structure of the rotating member on the leg plate of the frame.

<Configuration of the present embodiment>
An embodiment of the present invention will be described with reference to FIGS. In each figure, the arrow LH is the left side of the webbing take-up device 10 on the left side in the axial direction of the spool 18, the arrow FR is the front side of the webbing take-up device 10 in the front-rear direction, and the arrow UP is the webbing take-up device 10. This shows the upper side in the vertical direction.

  As shown in FIG. 1, the webbing take-up device 10 includes a frame 12 that is fixed to a vehicle as a support member. The frame 12 includes a pair of leg plates 14 and 16 facing in the left-right direction. A spool 18 is provided between the leg plate 14 and the leg plate 16. The spool 18 is formed in a substantially cylindrical shape, and the center axis direction of the spool 18 is along the left-right direction. The longitudinal end of the webbing 20 for occupant mounting is locked to the spool 18, and the webbing 20 is wound around the outer periphery of the spool 18 in layers by rotating the spool 18 in the winding direction.

  A ratchet wheel 22 is formed coaxially with the spool 18 on one side in the central axis direction of the spool 18. The ratchet wheel 22 passes through a hole 24 formed in the leg plate 14. A plurality of ratchet-like inner teeth 26 are formed on the upper portion of the hole 24, and the ratchet wheel 22 of the spool 18 is engaged with the inner teeth 26 of the hole 24 when the spool 18 is displaced upward. . As a result, rotation of the spool 18 in the drawing direction opposite to the winding direction is prevented.

  Further, a shaft portion 28 is formed so as to protrude from one end portion in the central axial direction of the spool 18. The shaft portion 28 is formed coaxially with the spool 18. The shaft portion 28 is inside a spring case 30 provided outside the leg plate 14, and is rotatably supported by the spring case 30. A spiral spring 32 as a spool urging member is provided inside the spring case 30. The shaft portion 28 is urged in the winding direction by the spiral spring 32, whereby the spool 18 is urged in the winding direction.

  On the other hand, a lock base 34 is formed on the other side of the spool 18 in the central axis direction. The lock base 34 passes through a circular hole 36 formed in the leg plate 16 of the frame 12. The circular hole 36 is formed around the central axis of the spool 18. A hollow accommodating portion 38 is formed in the lock base 34. A part of the accommodating portion 38 is opened on the peripheral surface of the lock base 34 and is opened on the surface on the other side in the central axial direction of the spool 18. In the accommodating portion 38, a lock pawl 40 as a lock member is accommodated.

  Further, a shaft portion 42 is formed so as to protrude from the other end portion of the lock base 34 in the center axis direction of the spool 18. The shaft portion 42 is formed coaxially with the spool 18. Further, a sensor holder 46 of the sensor mechanism 44 is attached to the outside of the leg plate 16. A sensor cover (not shown) is attached to the sensor holder 46 or the leg plate 16 of the frame 12 from the other side in the central axis direction of the spool 18 of the sensor holder 46. The shaft portion 42 passes through the sensor holder 46 and is rotatably supported by the sensor cover.

  On the other hand, a V gear 48 as a rotating body is provided inside the sensor holder 46, and the V gear 48 is rotatably supported by the shaft portion 42. The V gear 48 is a ratchet wheel formed by a plurality of external teeth 50, and a guide hole 52 is formed. A pin 54 formed in the lock pawl 40 is passed through the guide hole 52. When the lock base 34 is rotated relative to the V gear 48 in the pull-out direction, the pin 54 is guided in the guide hole 52 and the lock pawl 40 is guided in the inner surface of the accommodating portion 38 of the lock base 34 so that the diameter of the spool 18 is increased. It is moved to the lock position outside the direction (see FIG. 3).

  Further, a locking portion 56 shown in FIG. 2 is formed on one side in the central axis direction of the spool 18 of the V gear 48, and one end of a compression coil spring 58 constituting a release member as a spring is formed in the locking portion 56. Is locked. The other end of the compression coil spring 58 is locked to a locking portion 60 formed on the lock base 34, and the V gear 48 is biased in the pull-out direction with respect to the lock base 34 by the biasing force of the compression coil spring 58. Has been. As a result, the V gear 48 can follow the lock base 34 and rotate in the pull-out direction. However, the lock base 34 can rotate relative to the V gear 48 in the pull-out direction by compressing and elastically deforming the compression coil spring 58. Further, since the V gear 48 is urged in the pulling direction with respect to the lock base 34 by the urging force of the compression coil spring 58, the lock pawl 40 is urged to the release position on the radially inner side of the spool 18 (see FIG. 2). ).

  As shown in FIG. 1, a W pawl 62 is swingably supported on the V gear 48. In the event of a vehicle emergency such as a vehicle collision, the spool 18 is rotated in the pull-out direction with a rotational acceleration of a predetermined magnitude or greater, and the W pawl 62 is swung by rotating the V gear 48 in the pull-out direction. Thus, the center of gravity of the W pawl 62 is determined. Further, ratchet-shaped internal teeth (not shown) are formed on the inner side of the sensor holder 46 at regular angles around the center axis of the spool 18. When the W pawl 62 is swung by the spool 18 being rotated in the pull-out direction with a rotational acceleration of a predetermined size or more, the W pawl 62 is engaged with the ratchet-shaped inner teeth of the sensor holder 46. As a result, rotation of the V gear 48 in the pull-out direction is prevented.

  Further, a vehicle acceleration sensor 64 is provided below the V gear 48. The vehicle acceleration sensor 64 includes a hard ball 66 that rolls with inertia when the vehicle collides. When the hard ball 66 rolls, the sensor pawl 68 of the vehicle acceleration sensor 64 is pushed up by the hard ball 66 and engaged with the external teeth 50 of the V gear 48. As a result, rotation of the V gear 48 in the pull-out direction is prevented.

  On the other hand, a disc-shaped lock gear 70 is attached to the frame 12 as a rotating member. The outer peripheral shape of the lock gear 70 is circular, and is inserted into the circular hole 36 of the leg plate 16 of the frame 12 as shown in FIGS. 2 and 5. Further, the lock gear 70 is formed with a retaining portion 72 as a rotation mechanism. The retaining portion 72 extends outward in the radial direction of the lock gear 70 and has a substantially U shape. As shown in FIGS. 1 and 6, a groove 74 is formed in the retaining portion 72. The groove 74 opens at both ends of the locking portion 72 in the circumferential direction of the lock gear 70 and at the radially outer end of the locking gear 70 of the locking portion 72. Further, as shown in FIG. 6, the bottom of the groove 74 is located outside the outer peripheral portion of the lock gear 70.

  As shown in FIGS. 1, 2, and 5, a mounting hole 76 is formed in the leg plate 16 corresponding to the retaining portion 72. The mounting hole 76 is a rectangular recess that partially enlarges the inner diameter of the circular hole 36, and the retaining portion 72 of the lock gear 70 can penetrate the mounting hole 76 in the axial direction. The position where the retaining portion 72 and the mounting hole 76 face each other in the rotational position (rotating posture) of the lock gear 70 is the lock gear mounting position. By making the retaining portion 72 and the mounting hole 76 face each other, the lock gear 70 is moved to the circular hole 36. Can be inserted into. The mounting holes 76 are provided at two opposing positions across the center of the circular hole 36.

  In addition, a guide hole 78 that forms a rotation mechanism together with the retaining portion 72 is formed on the drawing hole side of the mounting hole 76. The guide hole 78 is a rectangular recess that partially enlarges the inner diameter of the circular hole 36, similarly to the mounting hole 76, and is connected to both the circular hole 36 and the mounting hole 76. As shown in FIG. 5, the length L1 from the center of the circular hole 36 to the peripheral surface of the guide hole 78 is longer than the length L2 from the center of the lock gear 70 to the bottom of the groove 74 of the retaining portion 72. It is shorter than the length L3 from the center of 70 to the radially outer surface of the retaining portion 72. For this reason, as shown in FIG. 2, when the retaining portion 72 fitted in the mounting hole 76 is rotated in the pull-out direction, the guide hole 78 in the leg plate 16 of the frame 12 as shown in FIG. The outer part enters the inside of the groove 74. This can prevent the lock gear 70 from being pulled out of the circular hole 36.

  Further, the lock gear 70 is rotated in the pulling direction, and the retaining portion 72 is brought into contact with the pulling direction side end portion of the guide hole 78. In the rotation position (rotation posture) of the lock gear 70, the position where the retaining portion 72 is brought into contact with the pull-out direction side end of the guide hole 78 is a stop position, and the lock gear 70 is prevented from rotating in the pull-out direction. .

  As shown in FIG. 5, the lock gear 70 has a ratchet hole 79 formed coaxially with the lock gear 70. On the inner surface of the ratchet hole 79, a plurality of ratchet-shaped internal teeth 80 are formed as engaging portions. The internal teeth 80 are formed around the center of the lock gear 70 at a constant angle θ1, and the constant angle θ1 is set smaller than the formation range angle θ2 of the guide hole 78 around the center of the circular hole 36.

  On the other hand, as shown in FIGS. 1 and 2, ratchet-like teeth 82 are formed on the lock pawl 40 provided in the accommodating portion 38 of the lock base 34, and the lock pawl 40 has a diameter of the spool 18. By moving to the lock position side outside in the direction, the teeth 82 are engaged with the internal teeth 80 of the lock gear 70 as shown in FIG. The rotation of the lock gear 70 in the pull-out direction is prevented at the stop position, and the teeth 82 of the lock pawl 40 are engaged with the internal teeth 80 of the lock gear 70, thereby preventing the spool 18 from rotating in the pull-out direction. .

  1 and 2, the leg plate 16 of the frame 12 is formed with a locking portion 84, and one end of a tension coil spring 86 as a holding member is locked to the locking portion 84. ing. The other end of the tension coil spring 86 is latched by a latching portion 88 formed on the retaining portion 72 of the lock gear 70, and the lock gear 70 is biased in the pulling direction by the tension coil spring 86. Thus, the lock gear 70 is rotated to the stop position in the normal state, and the lock gear 70 is prevented from rotating in the pull-out direction. Further, the urging force of the tension coil spring 86 is set smaller than the sum of the urging forces of both the compression coil spring 58 and the spiral spring 32 in the spring case 30 interposed between the V gear 48 and the lock base 34. ing.

<Operation and effect of the present embodiment>
Next, the operation and effect of the present embodiment will be described.

  In the webbing retractor 10, the webbing 20 attached to the occupant's body is pulled in the event of a vehicle emergency such as a vehicle collision, and the spool 18 and the V gear 48 are pulled in the pull-out direction with a rotational acceleration of a predetermined size or more. It is rotated. As a result, when the W pawl 62 provided on the V gear 48 is swung and engaged with the ratchet-shaped inner teeth of the sensor holder 46, the rotation of the V gear 48 in the pull-out direction is prevented. Further, when the hard ball 66 of the vehicle acceleration sensor 64 rolls by inertia during a vehicle collision, the sensor pawl 68 is pushed up by the hard ball 66 and engaged with the external teeth 50 of the V gear 48. This also prevents the V gear 48 from rotating in the pull-out direction.

  When the spool 18 is rotated in the drawing direction while the rotation of the V gear 48 in the drawing direction is blocked, the pin 54 of the lock pawl 40 is guided to the guide hole 52 of the V gear 48 and the lock pawl 40 is moved. It is guided to the inner surface of the accommodating portion 38. As a result, the lock pawl 40 is moved toward the lock position radially outside the spool 18 and the teeth 82 of the lock pawl 40 are engaged with the internal teeth 80 of the lock gear 70 as shown in FIG. State). The lock gear 70 is biased in the pull-out direction by the biasing force of the tension coil spring 86, whereby the lock gear 70 is rotated to the stop position and is prevented from rotating in the pull-out direction. For this reason, when the teeth 82 of the lock pawl 40 are engaged with the internal teeth 80 of the lock gear 70, the rotation of the spool 18 in the pull-out direction is prevented, and the pull-out of the webbing 20 from the spool 18 is prevented.

  On the other hand, when the engagement between the teeth 82 of the lock pawl 40 and the inner teeth 80 of the lock gear 70 is released, the helical spring 32 in the spring case 30 or the compression coil spring between the V gear 48 and the lock base 34 is released. The spool 18 is rotated in the winding direction by the urging force 58. Accordingly, when the lock base 34 is rotated relative to the V gear 48 in the winding direction, the pin 54 of the lock pawl 40 is guided to the guide hole 52 of the V gear 48 and the lock pawl 40 is Guided inside. Accordingly, the lock pawl 40 is moved inward in the radial direction of the spool 18 so as to be separated from the lock position, and the engagement between the teeth 82 of the lock pawl 40 and the inner teeth 80 of the lock gear 70 is released.

  Incidentally, when the lock pawl 40 is separated from the lock position and returns to the release position, the winding direction side surface 82A of the tooth 82 is pressed against the pulling direction side surface 80A of the internal tooth 80 of the lock gear 70 as shown in FIG. Sometimes. Here, the urging force of the tension coil spring 86 that urges the lock gear 70 in the pull-out direction is the urging force of both the spiral spring 32 in the spring case 30 and the compression coil spring 58 between the V gear 48 and the lock base 34. Smaller than the sum of For this reason, when the lock pawl 40 is separated from the lock position in the pressure contact state between the winding direction side surface 82A of the tooth 82 and the extraction direction side surface 80A of the internal tooth 80, the extraction direction side surface 80A of the internal tooth 80 is the tooth 82. The lock gear 70 is rotated in the winding direction by being pressed by the winding side surface 82A.

  Accordingly, the lock pawl 40 can be smoothly separated from the lock position, and the engagement between the lock pawl 40 and the lock gear 70 can be smoothly released. For this reason, the shape of each of the lock pawl 40 and the lock gear 70 and the relative positions of the lock pawl 40 and the lock gear 70 so that the winding side surface 82A of the tooth 82 is not pressed against the pull-out side surface 80A of the internal tooth 80. There is no need to strictly manage the relationship.

  Further, the lock gear 70 is biased in the pull-out direction by the biasing force of the tension coil spring 86, so that the lock gear 70 is held at the stop position where the retaining portion 72 is in contact with the pull-out direction side end portion of the guide hole 78. Is done. For this reason, the teeth 82 of the lock pawl 40 can be engaged with the internal teeth 80 of the lock gear 70 in a state where the lock gear 70 is in the stop position. Thus, the lock gear 70 can be prevented from rotating in the pull-out direction after the teeth 82 are engaged with the internal teeth 80, and the spool 18 can be prevented from rotating in the pull-out direction.

  Furthermore, the lock gear 70 can be easily mounted on the leg plate 16 simply by fitting the retaining portion 72 of the lock gear 70 into the mounting hole 76 of the leg plate 16 of the frame 12 and rotating the lock gear 70 in the pull-out direction. Moreover, the formation range angle θ2 of the guide hole 78 around the center of the circular hole 36 is larger than the angle θ1 of the adjacent internal teeth 80 around the center of the lock gear 70. Therefore, even if the pull-out side surface 80A of the internal tooth 80 is pressed against the winding-direction side surface 82A of the tooth 82 of the lock pawl 40 and the lock gear 70 is rotated, the engagement between the tooth 82 and the internal tooth 80 is released. The rotation angle of the lock gear 70 until it does not exceed the angle θ1.

  Therefore, even if the pull-out side surface 80A of the internal tooth 80 is pressed against the winding-direction side surface 82A of the tooth 82 of the lock pawl 40 and the lock gear 70 is rotated, the retaining portion 72 of the lock gear 70 and the mounting hole 76 of the leg plate 16 are provided. The lock gear 70 does not reach the lock gear mounting position opposite to each other. As a result, the support of the lock gear 70 by the leg plate 16 of the frame 12 is canceled, and the lock gear 70 can be prevented from falling off the leg plate 16.

  In the present embodiment, the rotation mechanism that allows the lock gear 70 as the rotation member to rotate in the winding direction is configured by the retaining portion 72 of the lock gear 70 and the guide hole 78 of the leg plate 16. However, the rotation mechanism is not limited to the combination of the retaining portion 72 and the guide hole 78. For example, a rotation mechanism is formed by a long hole formed in one of the lock gear 70 and the leg plate 16 so as to be bent around the central axis of the spool 18 and a pin provided on the other side of the lock gear 70 and the leg plate 16 so as to be movable in the long hole. May be configured.

  In the present embodiment, the holding member for urging the lock gear 70 in the pull-out direction is the tension coil spring 86. However, a spring having another structure such as a compression coil spring or a torsion coil spring may be used as the holding member, and the holding member is limited to a specific structure as long as the lock gear 70 can be urged in the pull-out direction. It is not a thing.

  Further, in the present embodiment, the release member for biasing the lock pawl 40 in the direction away from the lock position is the compression coil spring 58 that biases the V gear 48 in the pull-out direction with respect to the lock base 34. It was. However, the release member may be a spring having another structure such as a tension coil spring or a torsion coil spring, and is limited to a specific structure as long as the lock pawl 40 can be urged away from the lock position. It is not something.

  In the present embodiment, the lock base 34 is formed on the spool 18 as a part of the spool 18. However, the spool 18 and the lock base 34 may be configured as separate bodies, and the spool 18 and the lock base 34 may be connected by a connecting member. 18 is considered a part.

  Further, in the present embodiment, the lock gear 70 as the rotation member is provided on the leg plate 16 of the frame 12, and the lock pawl 40 as the lock member is provided on the lock base 34 of the spool 18. However, the rotating member and the locking member are not limited to such a configuration. For example, a lock pawl is configured in such a manner that a lock gear having ratchet-shaped external teeth is supported so as to be rotatable in a pulling direction and a winding direction with respect to a lock base of a spool, and a lock pawl as a lock member is provided on a leg plate of the frame. When separating from the lock position, the lock gear may be rotated in the winding direction with respect to the lock base by the lock pawl. In such a configuration, the spool serves as a support member for the lock gear.

10 Webbing take-up device 12 Frame (supporting member)
18 Spool 20 Webbing 32 Spiral spring (spool urging member)
40 Lock pawl (locking member)
48 V gear (rotating body)
58 Compression coil spring (release member, spring)
70 Lock gear (rotating member)
72 Stopping part (rotating mechanism)
78 Guide hole (rotating mechanism)
80 Internal teeth (engagement part)
86 Tension coil spring (holding member)

Claims (5)

A spool that is rotated in the pull-out direction by pulling out the webbing;
A locking member that moves to a locking position in a vehicle emergency;
A rotation member that engages the lock member when the lock member is moved to a lock position and prevents rotation of the spool in the pull-out direction;
A rotation mechanism that enables rotation of the rotation member in a winding direction in an engaged state of the lock member with the rotation member;
A webbing take-up device comprising:   2. A holding member that urges the rotating member in a pulling direction and holds the rotating member at a rotating position where the rotating mechanism restricts the rotating member from rotating in the pulling direction. The webbing take-up device described in 1.   A release member that urges the lock member in a direction away from the lock position; and a spool urging member that urges the spool in a winding direction. The urging force of the release member and the urging force of the spool urging member The webbing take-up device according to claim 2, wherein the sum of the forces is greater than the biasing force of the holding member. A rotating body that separates the lock member from the lock position by being rotated in one of the drawing direction and the winding direction in a state in which the spool is prevented from rotating in the drawing direction;
The webbing retractor according to claim 3, wherein the release member is a spring that biases the rotating body toward the one side. A support member on which the rotating member is rotatably supported;
The rotation member from the rotation position of the rotation member in a state where rotation of the spool in the pull-out direction is prevented to the rotation position of the rotation member at which the support of the rotation member is canceled by the support member. A plurality of engaging portions that are formed on the rotating member at fixed angles smaller than the rotating angle and are engaged with the locking member;
5. The webbing take-up device according to claim 1, further comprising:

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