webbing winding device

Abstract

Webbing winding device (10) comprising: a roller (18) that winds up a webbing (20) of a safety belt device by rotating in a winding direction and which is subjected to a rotational force in an extraction direction opposite to the winding direction when the webbing (20) is pulled; a rotatable element (28) that, when rotated in one direction, rotates the roller (18) in the winding direction and that is rotated in the other direction by the rotation of the roller (18) in the extraction direction; a movable element (64) that, in a vehicle emergency situation, is moved towards an axial direction front end to engage the rotatable element (28) in such a way that the rotatable element (28) rotates in one direction and that is capable of deforming in a direction that intersects the axial direction;a tubular element (58), wherein the movable element (64) is arranged inside the tubular element (58) and one end of the tubular element (58) is open on one side of the rotatable element (28); a restraint section (68, 76, 96) that engages with a deformed section of the movable element (64) to restrict movement of the movable element (64) in the direction of an axis-direction foot end; and a guide section (70, 78) that guides the movable element (64) which has moved in the vehicle emergency situation, wherein the restraint section (68, 76, 96) is arranged between one end of the tubular element (58) and the guide section (70, 78).

Description

Technical field

[0001] The present disclosure relates to a webbing winding device in which a roll is rotated in a winding direction by a movable element which is moved in the direction of an axially directed front end. State of the art

[0002] There are webbing winding devices in which a roller is rotated in a winding direction when a movable element, which in a vehicle emergency situation is moved towards an axle-direction front end, engages a rotatable element in order to rotate the rotatable element, and a webbing is wound onto the roller (see, for example, the specification of US 2015 / 0336538A).

[0003] If, in such webbing winding devices, in a state in which the movable element has engaged with the rotatable element, a rotational force is applied from the roller to the rotatable element in a pull-out direction which is the opposite direction to the winding direction, the rotatable element moves the movable element in the direction of an axis-direction foot end side. Brief description of the invention Technical field

[0004] In view of the above circumstances, it is an object of the present disclosure to provide a webbing winding device that is capable of effectively suppressing the movement of a movable element towards an axis-direction foot end side due to a rotation of a roller in an extension direction. Solution to the problem

[0005] A webbing winding device of a first embodiment of the present disclosure comprises a roller, a rotatable element, a movable element, and a restraint section. The roller winds up a webbing of a safety belt device by rotating it in a winding direction, and it is subjected to a rotational force in an unwinding direction opposite to the winding direction when the webbing is pulled. When the rotatable element is rotated in one direction, it rotates the roller in the winding direction, and rotating the roller in the unwinding direction rotates the rotatable element in the other direction.In a vehicle emergency, the movable element is moved towards the front end of the axle to engage the rotating element, rotating it to one side and capable of deforming in a direction that intersects the axle direction. The restraint section engages with a deformed portion of the movable element to restrict its movement towards the rear end of the axle.

[0006] In the first embodiment of the webbing winding device, the movable element engages in the restriction section if the movable element, which has moved towards the front end of the axis, is pressed through an engagement section of the rotatable element and attempts to return towards the rear end of the axis, thereby restricting movement of the movable element towards the rear end of the axis. Accordingly, in a state where the movable element engages in the rotatable element, rotation of the rotatable element in the opposite direction can be suppressed, and rotation of the roller in the pull-out direction can be suppressed.

[0007] A second embodiment of a webbing winding device according to the present disclosure further comprises a tubular element. The movable element is arranged inside the tubular element, and one end of the tubular element is open on one side of the rotatable element. Under the pressure of a fluid supplied to another end of the movable element, the movable element is moved in the direction of the axially forward end and outward from one end of the tubular element to engage the rotatable element. The rotatable element has an engagement section that engages with the movable element, and the engagement section has a range of engagement with the movable element that increases and decreases due to a rotation of the rotatable element that accompanies the movement of the movable element in the direction of the axially forward end.The restriction section is provided between a rotational position of the engagement section, where the engagement area between the engagement section of the rotatable element and the movable element is greatest, and one end of the tubular element.

[0008] In the second embodiment of the webbing winding device, the movable element engages in the restricting section when the movable element, which has moved towards the front end of the axis, is pressed through the engagement section of the rotatable element and attempts to return towards the rear end of the axis, thereby restricting movement of the movable element in that direction. Accordingly, in a state where the movable element engages the rotatable element, rotation of the rotatable element in the opposite direction can be suppressed, and rotation of the roller in the pull-out direction can be suppressed.

[0009] In the second embodiment of the webbing winding device, it should be noted that the confining section is provided between the rotational position of the engagement section, where the engagement area between the engagement section of the rotatable element and the movable element is greatest, and one end of the tubular element. This allows a deformed section of the movable element, which is pressed through the rotatable element and attempts to return towards the axis-direction foot end, to effectively engage in the confining section.

[0010] A third embodiment of the present disclosure of a webbing winding device is the webbing winding device of the first embodiment or the second embodiment, which additionally comprises a guide section. The guide section guides the movable element that has moved in a vehicle emergency situation. The guide section is provided with a deformation-permitting section, which is configured such that it allows deformation of the movable element further in the direction of the axially forward end face than the restriction section.

[0011] In the third embodiment of the webbing winding device, the movable element is moved in a vehicle emergency situation while being guided by the guide section. The deformation-permitting section is located further along the guide section towards the front end of the movable element (in the direction of the axis) than the restriction section. If the movable element is subjected to a load from the rotating element and deforms in a direction intersecting the axis, the movable element is able to deform within the deformation-permitting section of the guide section. The deformed section of the moving element engages with the restriction section, thus preventing the movable element from moving towards the bottom end (in the direction of the axis).

[0012] A webbing winding device of a fourth embodiment of the present disclosure is the webbing winding device of the third embodiment, wherein the restriction section is provided on the guide section.

[0013] In the fourth embodiment of the webbing winding device, the restricting section is provided on the guide section that guides the movable element. The guide section can thus bear a force that is absorbed by the restricting section from the movable element when the restricting section limits the movement of the movable element in the direction of the axis's base end.

[0014] A webbing winding device of a fifth embodiment of the present disclosure is the webbing winding device of the second embodiment or the third embodiment, wherein the restricting section is provided on a section of one end of the tubular element.

[0015] In the fifth embodiment of the webbing winding device, the restricting section is provided at one end of the tubular element. The tubular element can thus bear a force that is absorbed by the restricting section from the movable element when the restricting section limits the movement of the movable element in the direction of the axis's base end.

[0016] A webbing winding device of a sixth embodiment of the present disclosure is the webbing winding device of the fifth embodiment, wherein the restriction section is configured as a surface of one end of the tubular element and the movable element is able to deform on an outside surface of the surface of one end of the tubular element in the direction of a radial outside of the tubular element.

[0017] In the sixth embodiment of the webbing winding device, the movable element is capable of deforming on an outer surface of one end of the tubular element in the direction of the radially outer surface of the tubular element. The movable element, having deformed in this way, is able to engage the surface of one end of the tubular element that serves as the constraint section over a large area. This allows the constraint section to effectively restrict the movement of the movable element in the direction of the axially oriented end face. Advantageous effects of the invention

[0018] As described above, the webbing winding device according to the present disclosure is able to effectively restrict a movement of a movable element in the direction of an axis-direction foot end due to a rotation of a roller in a pull-out direction, when the movable element has moved in the direction of an axis-direction front end in a vehicle emergency situation. List of characters Fig. Figure 1 is an expanded perspective view showing a webbing winding device according to a first exemplary embodiment. Fig. Figure 2 is a perspective view showing the interior of a cover plate. Fig. Figure 3 is a sectional view from the front of a vehicle, showing a cover plate, a cylinder, a movable element and a rotatable element. Fig. 4 is a Fig. 3. Corresponding sectional view showing a state in which an axial direction front end of a movable element has collided with a second engagement tooth of a rotatable element. Fig. 5 is a Fig. 4. Corresponding sectional view showing a state in which first engagement teeth and second engagement teeth of a rotatable element dig into a movable element. Fig. 6 is a Fig. 5 corresponding sectional view showing a condition in which an axial direction front end of a movable element has collided with a movement restriction section of a second rivet. Fig. 7 is a Fig. 6. Corresponding sectional view, which represents a state in which a movable element has expanded at a first deformation-allowing section and a second deformation-allowing section. Fig. Figure 8 is a perspective view showing an axial direction front end section of a cylinder and a movable element in a webbing winding device according to a second exemplary embodiment. Fig. Figure 9 is a perspective view showing an axial direction front end section of a cylinder in a belt winding device according to a third exemplary embodiment. Fig. Figure 10 is a perspective view showing an axial direction front end section of a cylinder in a belt winding device according to a fourth exemplary embodiment. Fig. Figure 11 is a perspective view showing an axial direction front end section of a cylinder and a movable element in a webbing winding device according to a fifth exemplary embodiment. Fig. Figure 12 is a sectional view showing an axial direction front end section of a cylinder and its surroundings in a belt winding device according to a sixth exemplary embodiment. Fig. Figure 13 is a sectional view showing an axial direction front end section of a cylinder and its surroundings in a belt winding device according to a seventh exemplary embodiment. Fig. Figure 14 is a sectional view showing an axial direction front end section of a cylinder and its surroundings in a belt winding device according to an eighth exemplary embodiment. Description of exemplary implementations

[0019] With reference to Fig. 1 to Fig. Section 14 provides an explanation of exemplary embodiments of the present invention. In each of the drawings, the arrow indicates FR the front, the arrow OUT a vehicle width direction outer side and the arrow UP a vehicle top of a vehicle equipped with a belt winding device 10 is equipped. In later embodiments, points that are basically the same as those already dealt with in an earlier exemplary embodiment are provided with the same reference numbers, and a detailed explanation of them is omitted. Configuration of the first exemplary implementation

[0020] As in Fig. As shown in 1, a webbing winding device is present. 10 according to a first exemplary embodiment, a frame 12 up. The frame 12 is attached to a section of the vehicle's underside, specifically to a central pillar (not shown in the drawings) that serves as the vehicle body. The frame 12 is with leg plates14 , 16 equipped with the leg plate 14 and the leg plate 16 They are essentially located opposite each other along a vehicle front / rear direction.

[0021] The webbing winding device 10 also plays a role 18 on. The role 18 is essentially formed in a round tube shape and between the leg plate 14 and the leg plate 16 of the frame 12 arranged. An axis center direction of the roller 18 runs in the direction in which the leg plate 14 and the leg plate 16 are opposite each other (essentially in the front / rear direction of the vehicle), and the role 18 It can rotate around its axis center.

[0022] On the role 18 is the longitudinal foot end section of an elongated, belt-shaped webbing. 20 anchored. If the role 18in one winding direction (direction of arrow A in Fig. 1 etc.) is turned, the webbing 20 from a longitudinal foot end side onto the roller 18 wound up. One longitudinal front end of the webbing. 20 extends from the role 18 outwards towards the top of the vehicle. The longitudinally oriented front end of the webbing. 20 passes through a slot formed in a through-bolt (not shown in the drawings) that extends from the central column on the upper surface of the vehicle frame. 12 is carried, and it is folded back on itself towards the underside of the vehicle.

[0023] The longitudinal front end section of the webbing 20is anchored to an anchor plate (not shown in the drawings). The anchor plate is made of a metal sheet material such as steel and is attached to the vehicle floor (not shown in the drawings) or to a frame element of a seat (not shown in the drawings) that houses the webbing retractor. 10 corresponds.

[0024] One with the webbing winding device 10 The vehicle's equipped safety belt system includes a locking device (not shown in the drawings). The locking device is located on the inside of the seat, facing the vehicle's width, and is connected to the belt retractor. 10 is equipped with a tongue (not shown in the drawings) with which the webbing 20 is equipped, engages in a state in which the webbing 20has been wrapped around the body of an occupant seated in the seat, in such a way as to be locked into the locking device that the strap 20 is worn over the body of the occupant.

[0025] On the role 18 is on the rear of the vehicle, the roller 18 A single-piece, coaxial shaft section (not shown in the drawings) is provided. This shaft section passes through a hole (not shown in the drawings) in the leg plate. 14 of the frame 12 is formed, and extends towards the rear of the vehicle frame. 12 .

[0026] As in Fig. As shown in 1, the leg plate is located at the rear of the vehicle. 14 of the frame 12 a spring housing 22 Provided. Inside the spring housing. 22A roller thrust element, such as a coil spring (not shown in the drawings), is provided. The roller thrust element is connected to the roller via the shaft section. 18 directly or indirectly involved, and the role 18 is forced into the winding direction (direction of arrow A) by the pressure force of the roller pushing element. Fig. 1) crowded.

[0027] The webbing winding device 10 features a torsion bar 24 on, which configures a force limiting mechanism. The torsion bar 24 It is designed in an elongated rod shape that runs essentially in the front / rear direction of the vehicle. A rear side section of the torsion bar. 24 is inside the roll 18 arranged and is in a state in which a rotation of the torsion bar 24 regarding the role 18 is limited, with the role 18connected. A vehicle front section of the torsion bar. 24 goes through a hole in the leg plate 16 of the frame 12 is formed, and extends towards the outside (vehicle front) of the frame. 12 .

[0028] On the front of the vehicle, the leg plate 16 of the frame 12 is a rotating element 28 a seatbelt tensioner 26 provided. The rotating element 28 features a first turning section 30 up. The first part of filming. 30 is coaxial to the roll 18 arranged and the vehicle front section of the torsion bar 24 is at the first filming section 30 coupled. The rotating element 28 This prevents it from moving with respect to the front section of the vehicle's torsion bar. 24 to rotate, so that through the torsion bar 24indirectly a rotation of the rotatable element 28 regarding the role 18 is restricted.

[0029] The first part of filming 30 of the rotating element 28 has a first flange 32 up. The first flange 32 is designed in a disc shape and is located on the front of the vehicle at the first flange. 32 are several first surgical teeth 34 arranged to serve as intervention points. The first intervention teeth 34 are around the center of the axis of the first flange 32 formed around at predetermined intervals and the rear ends of the first engagement teeth of the vehicle 34 are integral with the first flange 32 connected. Circumferential rotational direction dimensions of each of the first interposed teeth 34 shorten on the way towards the radial outer side of the rotatable element 28 .

[0030] Furthermore, on one vehicle front of the first turning section 30 a second filming section 36 planned, which together with the first filming section 30 the rotating element 28 configured. The second turning section 36 has a second flange 38 up. The second flange 38 is configured in a disc shape and is located on the rear of the vehicle at the second flange. 38 are several second surgical teeth 40 arranged, which serve as a single intervention section. The second intervention teeth 40 are around the center of the axis of the second flange 38 formed around at predetermined intervals. The distances between adjacent second intervention teeth. 40 around the center of the axis of the second rotation section 36 The distances around them are the same as the aforementioned distances between adjacent first intervention teeth. 34around the center of the axis of the first rotation section 30 around.

[0031] When viewed along an axis center direction of the rotatable element 28 Each of the second surgical teeth 40 around the center of the axis of the first rotation section 30 essentially centrally located between adjacent first teeth requiring intervention. 34 arranged. The second rotation section 36 In this state, it is so close to the first turning section 30 coupled that the second rotation section 36 is prevented from discussing the first part of the shoot 30 to move, which includes a rotation.

[0032] A section of the second filming segment 36 on the front of the vehicle, on the second flange 38 configures a snap-in base 44 a locking mechanism 42 The snap-in base 44 features a locking pawl bolt 46up. The axial direction of the pawl bolt 46 runs along the front / rear direction of the vehicle and is a rear side end section of the locking pawl bolt. 46 is from the snap-in base 44 (namely from the rotating element) 28 ) worn. At the locking base 44 is also a locking latch 48 provided. A foot end section of the locking latch. 48 is secured by the locking pawl bolt 46 worn so that he is able to turn the locking pawl bolt 46 to swing around.

[0033] On the front of the vehicle, the leg plate 16 , which is the snap-in base 44 and the locking latch 48 This corresponds to a cover plate. 50 attached, which serves as a guide section and incorporates both the locking mechanism 42 as well as the seatbelt tensioner 26 configured. The cover plate 50It is open towards the rear of the vehicle and has a base plate 52 the cover plate 50 The leg plate 16 in a state opposite, in which they are facing the front of the vehicle leg plate 16 is spaced apart.

[0034] On the base plate 52 the cover plate 50 is a blockage 54 formed. At an inner circumferential hole of the locking hole. 54 Locking teeth are formed. The locking pawl 48 the locking base 44 lies on the inner circumferential section of the blocking hole 54 in a radial oscillation direction of the pawl 48 opposite. If the locking pawl 48 in one direction around the locking pawl bolt 46 As it is swung around, a front end section approaches the locking pawl. 48 the inner circumferential section of the locking hole 54 and the front end section of the pawl 48engages one of the locking teeth of the locking hole 54 The snap-in base 44 This prevents it from rotating in the direction of withdrawal, which reduces the role 18 indirectly prevents it from rotating in the direction of withdrawal.

[0035] On the front of the vehicle, the cover plate 50 is a sensor holder 56 the locking mechanism 42 provided. The sensor holder 56 It is open towards the rear of the vehicle and it is attached to the leg plate 16 of the frame 12 either directly attached or indirectly via the cover plate 50 Attached. Inside the sensor holder. 56 Various components are housed within the sensor holder, forming a sensor mechanism that detects vehicle emergency situations. When the sensor mechanism is located within the sensor holder... 56 If triggered in a vehicle emergency situation, the locking pawl will 48coordinated with a pull-out direction rotation of the locking base 44 the locking mechanism 42 in one direction around the locking pawl bolt 46 swung around.

[0036] The webbing winding device 10 also features a cylinder 58 on, which serves as a tubular element that holds the seatbelt tensioner 26 configured. The cylinder 58 It is designed in a round tube shape. An axially centered foot end section of the cylinder. 58 is located on the upper rear of the vehicle frame 12 arranged. In the axially centered foot end section of the cylinder. 58 is a micro gas generator 60 Introduced, which configures a load generator that serves as a fluid pressure generator. The micro gas generator 60The micro gas generator is electrically connected via an ECU, which serves as a control unit in the vehicle, to a collision detection sensor (neither of which are shown in the drawings). 60 is triggered by the ECU when an impact is detected by the collision detection sensor during a vehicle collision, and into the cylinder 58 Gas, a form of gas from the micro gas generator, is produced. 60 generated fluids, fed in.

[0037] Inside the cylinder 58 is a ball seal 62 arranged, which serves as a piston. The ball seal 62 It is made of a synthetic resin. The ball seal 62 has a state in which the ball seal 62 When not under load, it is essentially spherical. The spherical seal 62 separates an interior space of the cylinder 58 into an axis center direction foot end side of the ball seal62 and an axis center direction front end of the ball seal 62 If the micro gas generator 60 This is triggered by the micro gas generator 60 generated gas to the cylinder 58 supplied. The internal pressure in the cylinder 58 The increase rises accordingly between the micro gas generator 60 and the ball seal 62 on, and the ball seal 62 moves in the direction of the axis center direction front end of the cylinder 58 and it is in the axial direction of the cylinder 58 compressed and deformed.

[0038] Inside the cylinder 58 is also a movable element 64 arranged. The movable element 64 It is formed in a round column shape from a synthetic resin and is capable of deforming when subjected to an external force. The movable element 64is regarding the ball seal 62 on the front end of the cylinder, in the direction of the axis center 58 arranged. If the ball seal 62 in the direction of the axis center direction front end of the cylinder 58 The movable element is moved 64 through the ball seal 62 pressed and in the direction of the axis center direction front end of the cylinder 58 moved.

[0039] The cylinder 58 is bent at an axle center direction intermediate section, and at the upper front of the vehicle leg plate 16 of the frame 12 is an axis-center-direction front end section of the cylinder 58 arranged. The cylinder 58 is between the cover plate 50 and the leg plate 16 of the frame 12 Clamped. The front end of the cylinder, in the direction of the axis center. 58is essentially open in the direction of the vehicle's underside and in a direction angled towards the vehicle's underside in the direction of the vehicle's width. If the movable element 64 the axial direction front end section of the cylinder 58 Once reached, the movable element 64 through the ball seal 62 pressed and continues to move, so that it exits the axially centered front end section of the cylinder. 58 protrudes towards the underside of the vehicle.

[0040] An axis-center direction front end surface of the cylinder 58 configures a flat surface that is aligned with the axis center direction of the cylinder 58 It is orthogonal. The axially centered front surface of the cylinder. 58 and an inner circumferential surface of the cylinder 58 at the axial direction front end section of the cylinder 58are orthogonal to each other and the axis center direction front end surface of the cylinder 58 and an outer circumferential surface of the cylinder 58 are also orthogonal to each other.

[0041] A first deformation-allowing section 66 is located in a section within the cover plate 50 provided and essentially located on the underside of the vehicle at the axle center-direction front end of the cylinder 58 positioned in a direction that is angled towards the outside of the vehicle in the direction of the vehicle's width, relative to the underside. As in Fig. As shown in section 3, a space widens in the first deformation-allowing section. 66 , which is located essentially on the underside of the vehicle at the axle-center-direction front end of the cylinder 58 located on an outer circumferential edge at the front end of the cylinder 58in a direction orthogonal to the center of the axis, more towards an outer edge. The movable element 64 , the front end of the cylinder extending from the axis center direction 58 protruding towards the underside of the vehicle, it is thus able to deform in such a way that it aligns itself with respect to the center of the axis of the movable element. 64 extends in the direction of the orthogonal outer edge.

[0042] It should be noted that in the present exemplary embodiment, the axis center direction front end of the cylinder 58 a first restriction section 68 configured, which serves as a constraint section. When the movable element 64 , which comes from the front end of the cylinder 58 protrudes towards the underside of the vehicle, at the first deformation-allowing section 66 with respect to the center of the axis of the movable element 64extending in the direction of the outer edge of the orthogonal direction lies at the first restriction section 68 of the cylinder 58 in the axis-center direction an extensive section of the movable element 64 opposite. If the moving element 64 , which comes from the front end of the cylinder 58 protrudes towards the underside of the vehicle, attempts to enter the cylinder 58 To return, the section of the movable element thus collides with the moving element. 64 , which has extended in the direction of the outer edge of the orthogonal direction towards the center of the axis, against the first restriction section 68 (the axis-center direction front end of the cylinder) 58 ).

[0043] Furthermore, within the cover plate 50 essentially on the underside of the vehicle of the first deformation-allowing section 66 the previously described rotatable element 28arranged. If this differs from the ball seal 62 pressed movable element 64 essentially towards the underside of the vehicle of the first deformation-permitting section 66 When moved, the movable element occurs 64 between the first flange 32 of the first filming section 30 and the second flange 38 of the second filming section 36 of the rotating element 28 one. The movable element 64 bumps against the first access teeth. 34 of the first filming section 30 and the second surgical teeth 40 of the second filming section 36 , and the first surgical teeth 34 and the second surgical teeth 40 are caused by the movable element 64 pressed towards the underside of the vehicle.

[0044] As a result, the rotating element 28 in the winding direction (the direction of the arrow) Ain Fig. 3 etc.) rotated and the movable element 64 is under pressure from the ball seal 62 from further towards the underside of the vehicle. In this way, the rotating element 28 through the movable element 64 rotated in the winding direction and the first engagement teeth 34 and the second surgical teeth 40 dig into the movable element 64 The rotating element 28 It continues to rotate in the winding direction when the movable element 64 in this state it continues to move towards the underside of the vehicle.

[0045] In the cover plate 50 is located on the underside of the vehicle at the first deformation-allowing section 66 a directional guidance section 70 planned. The directional guidance section 70 is formed by part of a vehicle width-direction inner side section of a side wall72 formed as a wall section of the cover plate 50 serves. As in Fig. 2 and Fig. As shown in section 3, this is the side wall. 72 at the directional guidance section 70 on the inside of the cover plate 50 Profiled in the direction of the vehicle's width, towards the outside. As in Fig. Figure 3 shows an inner side surface on a vehicle underside section of the guidance section. 70 arranged so that they are along a dash-dot line C runs from the vehicle width-oriented inner side of the inner circumferential surface at the front end section of the cylinder 58 It extends downwards. Furthermore, it forms a vehicle underside end section of the guidance section. 70 on a dash-dot line D arranged, extending from the center of rotation of the rotatable element 28from extending in the direction of the vehicle's width inwards, such that it aligns with the axle center direction at the front end section of the cylinder 58 It intersects orthogonally.

[0046] On the underside of the vehicle's guidance section 70 is a second deformation-allowing section 74 provided for. At the second deformation-permitting section 74 is the inner side surface of the side wall 72 further in the direction of the vehicle width inwards as an inner side surface of the guidance section 70 arranged. The movable element 64 This enables it to engage with the second deformation-allowing section 74 to extend in the direction of the vehicle's width inwards.

[0047] On a vehicle underside surface of the guidance section 70 is a second restriction section 76planned. The second restriction section 76 is a flat surface that is orthogonal to the axis-center direction of the front end section of the cylinder 58 is. If the moving element 64 at the second deformation-allowing section 74 The extended section of the movable element lies in the direction of the vehicle's width inwards. 64 in the axial direction of the cylinder 58 the second restriction section 76 opposite. The extended section thus abuts the second restricted section. 76 , if the moving element 64 attempts to move in the direction of the axis direction foot end.

[0048] On the underside of the vehicle, the second deformation-allowing section 74 is on a section of the side wall 72 the cover plate 50 a curved section 78arranged. The curved section 78 curves at the pivot point of the rotating element 28 around a center of curvature. A distance between the curved section 78 and the center of rotation of the rotatable element 28 The distance increases as it moves towards the winding direction side. A distance between one winding direction side end 78A of the curved section 78 is greater than or equal to the sum of a radial dimension of a circle passing through the anterior ends of the first occluding teeth 34 and the second intervention teeth 40 of the rotating element 28 is described, and a diameter dimension of the moving element 64 The movable element 64 bends so that it fits the curved section 78 such that it follows that the movable element 64 is able to position itself at the winding direction side end 78A of the curved section78 from the first surgical teeth 34 and the second surgical teeth 40 to separate.

[0049] It should be noted that an angle θ, which is between the dash-dot line D , which are orthogonal to the axis-center direction of the cylinder 58 is and is located away from the center of rotation of the rotatable element 28 extends in the direction of the vehicle's width inwards, and is formed by a dash-dot line E that passes through the center of rotation of the rotatable element. 28 and the winding direction side end 78A of the curved section 78 The angle is set to less than 180°. More precisely, the angle θ in the present exemplary embodiment is set to 90°.

[0050] On a section of the side wall 72 on the outside of the curved section in the direction of vehicle width 78 is a first corner section 80formed, which serves as a corner section. On the opposite side of the curved section. 78 of the first corner section 80 the side wall extends 72 from the first corner section 80 outwards towards the top of the vehicle, while angled inwards in the direction of the vehicle's width. The section of the side wall 72 , which extends from the first corner section 80 The first corner section, extending towards the top of the vehicle, is inclined with respect to the dashed-dotted line E such that it moves away from the dashed-dotted line E. 80 the side wall 72 is on the inside of the cover plate 50 bent around a center of curvature and the radius of curvature of the first corner segment 80 is smaller than the radius of curvature of the bent section 78 the side wall 72 .

[0051] On a section of the side wall 72the cover plate 50 on the vehicle's upper surface of the first corner section 80 is a second corner section 82 formed, which serves as a corner section. On the opposite side to the first corner section. 80 of the second corner section 82 the side wall extends 72 from the second corner section 82 outwards in the direction of the vehicle's width inwards. The second corner section 82 bends on the inside of the cover plate 50 around a center of curvature and the radius of curvature of the second corner segment 82 is not larger than the radius of curvature of the bent section 78 The section that extends from the second corner section 82 extending inwards towards the vehicle's width, it bends along the cylinder. 58 , so that it is attached to the cylinder 58 follows.

[0052] The cover plate configured in this way 50 is as in Fig. 1 is shown, using several first rivets 84 and a single second rivet 86 on the leg plate 16 of the frame 12 Attached. From the side wall 72 A flange extends from it 88 towards the outside of the cover plate 50 . Front end sections (vehicle rear side end sections) of the first rivet 84 are in a state where the first rivets 84 the flange 88 and the leg plate 16 of the frame 12 from the side of the cover plate 50 from penetrating, caulked.

[0053] The second rivet 86 is on the top of the vehicle, on the rotating element 28 and on the vehicle width-direction outer side of the axle center-direction front end section of the cylinder 58provided. A front end section (vehicle rear side end section) of the second rivet. 86 is in a state where the second rivet 86 through the base plate 52 and the leg plate 16 of the frame 12 from the side of the cover plate 50 from through, crimped. An intermediate section of the second rivet 86 configures a movement restriction section 90 The movable element 64 is prevented from moving in the direction of the axis direction front end when the axis direction front end of the moving element 64 against the movement restriction section 90 of the second rivet 86 impacts. In the present exemplary embodiment, the axial length of the movable element is 64 such that an axis direction foot end of the movable element 64 inside the cylinder 58in a state in which the axially oriented front end of the movable element 64 against the movement restriction section 90 of the second rivet 86 has been pushed, not from the front end of the cylinder 58 comes out. Operating principle and advantageous effects: first exemplary embodiment

[0054] The following is an explanation of the working method and the advantageous effects of the present exemplary embodiment.

[0055] In the webbing winding device 10 will the sensor mechanism of the locking mechanism 42 triggered in a vehicle collision, which is an example of a vehicle emergency situation. If the sensor mechanism of the locking mechanism... 42 If the locking pawl is in a triggered state, it will... 48 the locking base 44 in coordination with a rotation of the locking base 44the locking mechanism 42 in the direction of withdrawal (the direction of arrow B in Fig. 1 etc.) in one direction around the locking pawl bolt 46 swung around. The front end section of the pawl. 48 accordingly approaches the inner circumferential section of the blocking hole 54 on the base plate 52 the cover plate 50 and the front end section of the pawl 48 engages the locking teeth of the locking hole 54 , which creates the snap-in base 44 is prevented from rotating in the direction of withdrawal.

[0056] The snap-in base 44 is on the second part of the shoot 36 of the rotating element 28 trained. The first filming phase 30 of the rotating element 28 is prevented from discussing the second part of the shoot 36 to rotate, and it is connected to the front of the vehicle's torsion bar. 24connected. Since the first turning section 30 and the role 18 Both are prevented from discussing the torsion bar. 24 to turn the role 18 because of the rotating element 28 prevented from rotating in the direction of withdrawal, prevented from rotating in the direction of withdrawal (the direction of arrow B in Fig. 1 etc.) to turn. The webbing 20 This prevents him from getting out of position. 18 to be pulled out, which allows the occupant's body to be freed from the seatbelt 20 is held.

[0057] If the occupant is in a condition where the locking base 44 is prevented from moving in the direction of withdrawal (the direction of arrow B in Fig. 1 etc.) to rotate, due to inertia it tries to move towards the front of the vehicle, a pulling force acts on the seatbelt from the occupant's body. 20and it acts on the rear side section of the torsion bar. 24 about the role 18 Corresponding to this tensile force is a rotational force in the pull-out direction. If the pull-out rotational force is present on the rear side section of the torsion bar of the vehicle, 24 The mechanical strength of the torsion bar is affected. 24 If the vehicle's rear side section of the torsion bar is exceeded, the force is transferred to the rear side section of the torsion bar. 24 a torsional deformation, so that it is in relation to the front section of the torsion bar of the vehicle 24 rotates in the direction of withdrawal.

[0058] The role 18 becomes proportional to this torsional deformation of the torsion bar 24 in the direction of withdrawal (the direction of the arrow) B in Fig. 1 etc.) turned and the webbing 20 is extended by a length proportional to the rotational magnitude of the pulley 80 in the direction of withdrawal, from the roll 18The occupant is thus able to move in proportion to the length of the seatbelt due to inertia. 20 , who are out of sorts 18 is pulled away, to move towards the front of the vehicle, and part of the pulling force exerted by the occupant on the seatbelt 20 The effect is caused by the torsional deformation of the torsion bar. 24 broken down and absorbed.

[0059] In the webbing winding device 10 In a vehicle collision, which is one example of a vehicle emergency situation, within the cylinder 58 High-pressure gas is instantly fed in when the micro gas generator is activated by the ECU. 60 the seatbelt tensioner 26 is triggered. If the ball seal 62 due to the pressure of the gas in the direction of the axis center direction front end of the cylinder 58 When the movable element is moved 64 through the ball seal 62pressed and the movable element 64 is directed towards the axis center direction front end of the cylinder 58 moved.

[0060] Due to the movement of the movable element 64 In the direction of the axis direction front end, an axis direction front end section of the movable element moves. 64 from the axially centered front end of the cylinder 58 towards the underside of the vehicle (in the direction of the arrow) F in Fig. 3 etc.). A vehicle width-direction inner side section of the axle-direction front end section of the moving element. 64 abuts the inner side surface of the cover plate 50 at the directional guidance section 70 If the movable element 64 In this state, the movable element moves further towards the front end of the axis. 64 , as in Fig. 4 is shown, between the first flange 32 and the second flange 38 of the rotating element 28 one. The first teeth to be treated 34 and the second surgical teeth 40 of the rotating element 28 are formed by the axially oriented front end of the movable element 64 such a direction towards the underside of the vehicle (in the direction of the arrow) F in Fig. 4 etc.) pressed so that the rotatable element 28 in the winding direction (the direction of arrow A in Fig. 4 etc.) is rotated.

[0061] Because the rotating element 28 , as in Fig. As shown in section 5, the first engagement teeth rotate in the winding direction, bite, or dig in. 34 and second intervention teeth 40 , which extend further in the direction of the withdrawal direction (the side of arrow B in Fig. 4 etc.) than those from the front end of the movable element 64 pressed first intervention teeth 34 and second intervention teeth 40 are located on an outer circumferential surface of the movable element 64 from in the direction of a radial central side of the movable element 64 into the movable element 64 .

[0062] The rotating element 28 This is due to the fact that the movable element 64 , into which the first intervention teeth 34 and the second surgical teeth 40 bite or dig, further towards the underside of the vehicle (in the direction of arrow F in Fig. 5 etc.) is moved further in the direction of the winding direction (the direction of the arrow). A in Fig. 5 etc.) rotated. This winding direction rotation of the rotatable element. 28 is via the torsion bar 24 such a role 18 transferred that the role18 is rotated in the winding direction. The webbing 20 This will therefore affect the role 18 wound up, which reduces the holding force on the occupant from the seatbelt 20 increased.

[0063] The first teeth requiring surgery 34 and the second surgical teeth 40 bite or burrow into the movable element at a position further towards the top of the vehicle. 64 than the position of the dash-dot line D in Fig. 3. If the rotating element 28 from this state due to the fact that the movable element 64 moved in the direction of the axis direction, in the winding direction (the direction of the arrow) A in Fig. 3 etc.) is rotated, the degree to which the first intervention teeth are rotated increases. 34 and the second surgical teeth 40 into the movable element 64biting or digging (specifically the area over which the first penetrating teeth emerge) 34 and the second surgical teeth 40 with the movable element 64 are undergoing intervention).

[0064] The extent to which the first surgical teeth 34 and the second surgical teeth 40 into the movable element 64 biting or digging, i.e., the area over which the first penetrating teeth emerge 34 and the second surgical teeth 40 with the movable element 64 The risk is greatest when the front ends of the first teeth are involved in the intervention. 34 and the anterior ends of the second intervention teeth 40 on the dot-dash line D in Fig. 3 are arranged.

[0065] The underside of the vehicle's guidance section 70 the cover plate 50 is further along the underside of the vehicle than the dash-dot line. D in Fig. 3 arranged. The length from the center of rotation of the rotatable element. 28 to the inner side surface of the cover plate 50 on the section of the guidance section 70 on the underside of the vehicle from the dash-dot line D in Fig. 3 is longer than the length from the center of rotation of the rotatable element. 28 to the inner side surface of the cover plate 50 at the directional guidance section 70 at the dash-dot line D in Fig. 3.

[0066] In a state in which the moving element 64 at the directional guidance section 70 the cover plate 50 against the inner side surface of the cover plate 50 has been struck when the moving element 64 moved further in the direction of the axis's front end, such that the movable element 64 at the position of the dash-dot line D in Fig. As 3 passes by, the movable element moves. 64 thus from the center of rotation of the rotatable element 28 away. The extent to which the first surgical teeth disappear. 34 and the second surgical teeth 40 into the movable element 64 biting or digging (i.e., the area over which the first penetrating teeth emerge) 34 and the second surgical teeth 40 of the rotating element 28 with the movable element 64 (are undergoing intervention) therefore decreases (see Fig. 6).

[0067] If the moving element 64 Moving further from this state towards the front end of the axis, the movable element experiences 64 on the side of the rotating element 28 a bending deformation around a center of curvature. Due to the fact that the movable element 64When moved in this way towards the front end of the axis, the front end of the movable element collides with the axis. 64 at the intermediate section of the second rivet 86 against the movement restriction section 90 , whereby the movable element 64 is prevented from moving in the direction of the front end of the axis.

[0068] In a case where the occupant's body moves towards the front of the vehicle due to inertia and the rotating element 28 thereby in the direction of withdrawal (the direction of arrow B in Fig. 6 etc.) is rotated, the section of the moving element is subject to 64 , in which the first intervention teeth 34 and the second surgical teeth 40 biting or digging, in this state from the first erupting teeth 34 and the second surgical teeth 40from a rotational force in the withdrawal direction (the direction of the arrow) B in Fig. 6 etc.). A section of the moving element 64 , which extends further towards the axis direction foot end side than the section of the movable element 64 is located where the first teeth are accessed. 34 and the second surgical teeth 40 Biting or digging into it causes it to be compressed along its axis. If the movable element... 64 When compressed in this way, it attempts to align itself with respect to the axial direction of the moving element. 64 to extend in its orthogonal direction.

[0069] It should be noted that the inner side surface of the side wall 72 at the second deformation-allowing section 74 further towards the inside of the vehicle width than the inner side surface of the side wall 72 at the directional guidance section 70is arranged. The movable element 64 , which has been compressed in the above manner, is thus able to move with respect to the axial direction of the movable element 64 to deform in the orthogonal direction in order to expand the space at the second deformation-allowing section 74 to prove. The section of the movable element 64 , which in this way is located within the second deformation-allowing section 74 The extended area lies in the axial direction of the front end section of the cylinder. 48 the second restriction section 76 opposite. If the moving element 64 As it attempts to move in the direction of the axis direction foot end, the extended section of the movable element collides with it. 64 thus within the second deformation-allowing section 74 against the second restriction section 76 and the movable element64 is prevented from moving in the direction of the axis direction foot end.

[0070] Furthermore, on the inside of the cover plate 50 on the underside of the vehicle at the axle centering front end of the cylinder 58 the first deformation-allowing section 66 configured. Thus, the movable element compressed in the manner described above is 64 able to position itself on the underside of the vehicle at the axle center-direction front end of the cylinder 58 to extend in its orthogonal direction with respect to the axis. The section of the movable element 64 , which in this way is within the first deformation-allowing section 66 The first restriction section is based on the extended scope. 68 opposite, which is the front end of the cylinder in the direction of the axis center 58 is. If the moving element 64As it attempts to move in the direction of the axis direction foot end, the extended section of the movable element collides with it. 64 thus within the first deformation-allowing section 66 against the first restriction section 68 and the movable element 64 is prevented from moving in the direction of the axis direction foot end.

[0071] Since the movable element 64 As described above, if the element is prevented from moving in the direction of the axis direction foot end, the rotatable element can 28 to be prevented from moving in the direction of withdrawal (the direction of the arrow) B in Fig. 6 etc.) to rotate, which makes it possible to achieve a similar state to the state in which the front end section of the pawl is 48 the locking mechanism 42 into the locking teeth in the locking hole 54 on the base plate 52 the cover plate50 engages, thereby the locking base 44 is prevented from rotating in the direction of withdrawal. Triggering the seatbelt pretensioner. 26 This allows the coil 18 to prevent it from rotating in the direction of withdrawal. This allows the webbing to 20 to prevent him from going off the rails 18 to be pulled out, which allows the occupant's body to be effectively restrained by the strap 20 to keep.

[0072] Since the rotating element 28 as described above, it can be prevented from rotating in the direction of withdrawal if, as a result, the pressure exerted by the occupant's body on the webbing 20 acting tensile force the mechanical strength of the torsion bar 24 exceeds, onto the rear side section of the torsion bar 24 about the role 18 a rotational force in the withdrawal direction (the direction of the arrow) B in Fig. 1 etc.) also acts, the torsion bar can 24 to be caused to undergo torsional deformation.

[0073] Similar beneficial effects to those described above can also be achieved in cases where the webbing 20 is pulled through the occupant's body with a tensile force that equals the rotational force of the rotating element 28 exceeds when the seatbelt tensioner 26 has been triggered.

[0074] Furthermore, at the axis-centered front end of the cylinder 58 the first restriction section 68 planned. Specifically, the first restriction section is 68 further in the direction of the axis direction foot end of the movable element 64 than the position of the dash-dot line D in Fig. 3 arranged, at which the measure with which the first intervention teeth 34and the second surgical teeth 40 into the movable element 64 biting or digging, i.e., the area over which the first penetrating teeth emerge 34 and the second intervention teeth 40 with the movable element 64 The extent to which the first teeth undergoing intervention are affected is greatest. This is the case when the degree to which the first teeth are affected is greatest. 34 and the second surgical teeth 40 into the movable element 64 When biting or digging, the greatest torque is also in the direction of withdrawal (the direction of the arrow). B in Fig. 5), which is caused by the movable element 64 from the first surgical teeth 34 and the second surgical teeth 40 from which it is recorded, the largest. Since the moving element 64 through the first restriction section 68, which is located further from the position of the dash-dot line D in the direction of the axis direction foot end, is prevented from moving in the direction of the axis direction foot end end, the movable element can 64 effectively restricted in moving towards the foot end of the axis direction.

[0075] Furthermore, the movable element 64 able to react at the first deformation-permitting section 66 on the underside of the vehicle at the first restriction section 68 of the cylinder 58 regarding the axial direction of the moving element 64 to extend in the orthogonal direction in a widening shape. The extended section of the movable element 64 This brings us to the first restriction section. 68 against the entire axially central front end of the cylinder 58 This allows the movable element to 64through the first restriction section 68 of the cylinder 58 is effectively prevented from moving in the direction of the axis direction foot end.

[0076] Even if the moving component 64 as a result of the rotation of the rotatable element 28 in the direction of withdrawal (the direction of the arrow) B in Fig. 5) is damaged if the extent to which the first intervention teeth are damaged 34 and the second surgical teeth 40 of the rotating element 28 into the movable element 64 biting or digging, the largest part is also struck by a section of the movable element. 64 on the axis-direction foot end side of the damaged area against the first restriction section 68 of the cylinder 58 , which allows the movable element 64 is prevented from moving in the direction of the axis direction foot end.

[0077] Furthermore, in the present exemplary embodiment, the vehicle underside surface of the guidance section is configured 70 the side wall 72 the second restriction section 76 and the space on the underside of the vehicle of the second restriction section 76 configures the second deformation-allowing section 74 It should be noted that the vehicle's underside end section of the guidance section 70 on the dash-dot line D is arranged in a manner that extends from the center of rotation of the rotatable element. 28 extending in the direction of the vehicle's width inwards and orthogonal to the axis center direction of the front end section of the cylinder 58 is. The extent to which the first intervention teeth 34 and the second surgical teeth 40 into the movable element 64biting or digging (i.e., the area over which the first penetrating teeth emerge) 34 and the second surgical teeth 40 of the rotating element 28 with the movable element 64 (are involved) is greatest at the dash-dot line D.

[0078] In the state in which the first surgical teeth emerge 34 and the second surgical teeth 40 into the movable element 64 biting or digging is therefore when the rotating element is affected. 28 a rotational force in the withdrawal direction (direction of the arrow) B in Fig. 5B) acts, the preforming dimension of the movable element 64 The area around the dash-dot line D is the largest. This allows the movable element to 64 is caused to occur in the second deformation-allowing section 74 the cover plate 50to undergo sufficient deformation, and it allows the movable element to 64 such a thing against the second restriction section 76 the cover plate 50 that the movable element 64 is effectively prevented from moving in the direction of the axis direction foot end.

[0079] Furthermore, the underside of the vehicle's guidance section is equipped with 70 the cover plate 50 the second restriction section 76 provided for and the second restriction section 76 is by profiling the side wall 72 inside the cover plate 50 formed in the direction of the vehicle's width on the outside. Thus, the second restriction section 76 (i.e., the guidance section) 70 ) a larger cross-sectional coefficient than other sections of the side wall 72 the cover plate 50Thus, the mechanical strength of the side wall is 72 at the second restriction section 76 (i.e., the directional guidance section) 70 ) larger than in other sections, and the movable element 64 can be achieved through the extended section of the movable element 64 , which is against the second restriction section 76 impacts, effectively prevented from moving in the direction of the axis direction foot end side.

[0080] In the present exemplary embodiment, the first deformation-permitting section 66 , the second deformation-allowing section 74 and the second restriction section 76 all of the cover plate 50 configured. This also allows it even if the first deformation-allowing section 66 , the second deformation-allowing section 74 and the second restriction section 76are designed to suppress an increase in the number of components. In the present exemplary embodiment, the first restriction section 68 through the axis-center direction front end of the cylinder 58 configured. Even if the first restriction section 68 As planned, there will therefore be no increase in the number of components. Second exemplary embodiment

[0081] As in Fig. Figure 8 shows, in a second exemplary embodiment, the inner diameter dimensions and outer diameter dimensions of an axially oriented front end section of a cylinder are taken. 58 , which serves as a tubular element, on its way towards the front end of the axis. Thus, the movable element 64 , which moves in the direction of the axial direction front end, is deformed in such a way that it is in relation to the axial direction of the cylinder 58is compressed in the direction of the orthogonal inner side when it passes through the axially directed front end section of the cylinder 58 passes through it.

[0082] If the moving element 64 , which has deformed in this way, towards the underside of the vehicle at the front end of the cylinder in the direction of the axle direction 58 When moved, the movable element experiences 64 a restoring deformation, causing it to expand in the direction of the outer orthogonal dimension. The movable element 64 , which has undergone a rebound deformation in this way, is treated by the first intervention teeth 34 and the second surgical teeth 40 of the rotating element 28 pressed, which tries to move in the direction of withdrawal (the direction of the arrow). B in Fig. 6 etc.) to rotate, and the movable element 64extends further in the orthogonal direction with respect to the axis such that the area over which the movable element is located increases. 64 and the first restriction section 68 They are opposite each other. This allows the movable element to... 64 is brought to effectively counter the first restriction section 68 to bump when it attempts to move in the direction of the axis direction foot end, which allows the movement of the moving element to 64 to effectively restrict the area towards the foot of the axis. Third and fourth exemplary implementation examples

[0083] As in Fig. Figure 9 shows a third exemplary embodiment, which includes a first restriction section. 68 , which is an axis-center-direction front end section of a cylinder 58 is, which serves as a tubular element to define the circumferential direction of the cylinder58 around at predetermined intervals in the direction of the axis direction foot end of the cylinder 58 jailed. As in Fig. Figure 10 shows a fourth exemplary embodiment containing a first restriction section. 68 , which is a restriction section on an axial direction front end section of a cylinder 58 serves on opposite sides of the center of the cylinder 58 at two points in the direction of the axis center direction foot end of the cylinder 58 imprisoned.

[0084] Because of the fact that the axis center direction front end 58 The surface of the first constraint section is locally indented in the circumferential direction in the direction of the axis center direction foot end. 68 at the front end of the cylinder, in the direction of the axis center 58 to. If a section of a moving element 64 (not in Fig. 9 and Fig. 10 shown), which is related to the axial direction of the cylinder. 58 deformed in the orthogonal direction, against the first constraint sections 68 of the cylinder 58 impacts, the movable element 64 thus effectively prevented from moving in the direction of the axis direction foot end. Fifth exemplary embodiment

[0085] As in Fig. Figure 11 shows, in a fifth exemplary embodiment, the outer diameter dimensions of an axially oriented front end section of a cylinder are taken. 58 , which serves as a tubular element, on its way towards the front end of the axis. A first restriction section 68 , which is a restriction section at the axially directed front end of the cylinder 58 serves, with regard to the axial direction of the cylinder 58in the orthogonal direction a thinner dimension than the thickness of the cylinder 58 and the thickness of the first constraint section 68 It is preferably adjusted to have a very thin blade shape. If a section of a moving element 64 , which has extended in the direction of the outer edge of the orthogonal direction, against the first restriction section 68 of the cylinder 58 The first restriction section thus bumps, bites, or burrows its way through. 68 into the extended section of the movable element 64 The movable element 64 This effectively prevents it from moving in the direction of the axis direction foot end. Sixth exemplary embodiment

[0086] As in Fig. As shown in 12, in a sixth exemplary embodiment, on a side wall serving as a wall section 72 a cover plate50 , which serves as a guide section, a deformation section 94 trained. The deformation section 94 is between an axially oriented front end of a cylinder 58 , which includes a first restriction section 68 configured, which serves as a constraint section, and a second constraint section 76 provided, which serves as a restriction section and is located on the side wall 72 the cover plate 50 is planned. Part of the side wall 72 the cover plate 50 is at the deformation section 94 Profiled in the direction of the vehicle's width on the outside.

[0087] A vehicle underside end section of the deformation section 94 is on a path of movement of the moving element 64 between the first restriction section 68 and the second restriction section 76arranged when the movable element 64 moves in the direction of the axis's front end. When the moving element 64 between the first restriction section 68 and the second restriction section 76 When moved in the direction of the axis's front end, the movable element collides with the moving element. 64 thus against the underside end section of the deformed section of the side wall 72 the cover plate 50 and is deformed in such a way that it is indented in the direction of the outside of the vehicle's width.

[0088] Furthermore, at one end of the vehicle's underside, the deformation section 94 a third restriction section 96 configured, which serves as a constraint section. The third constraint section 96 is on the top of the vehicle, the dash-dot line Darranged, extending from the center of rotation of the rotatable element 28 in the direction of the vehicle width inwards in a direction orthogonal to the axis center direction of the front end section of the cylinder 58 extends.

[0089] In the present exemplary embodiment, the rotational position of the first engagement teeth is therefore on the upper side of the vehicle. 34 and the second intervention teeth 40 , at which the measure to which the first intervention teeth 34 and the second intervention teeth 40 of the rotating element 28 into the movable element 64 biting or digging, i.e., the area where the first teeth erupt 34 and the second surgical teeth 40 of the rotating element 28 with the movable element 64 The third restriction section is the largest. 96 ordered, and the third restriction section96 is also further towards the underside of the vehicle than the first restriction section 68 arranged.

[0090] The third restriction section 96 is configured by a flat surface that is orthogonal to the axis-center direction of the front end section of the cylinder. 58 is. If the moving element 64 , which is due to the deformation section 94 the side wall 72 has been deformed, on the underside of the vehicle in the deformation section 94 A section of the movable element undergoes a restoring deformation. 64 on the underside of the vehicle in the deformation section 94 in the axial direction of the cylinder 58 the third restriction section 96 opposite.

[0091] If the moving element 64 as it attempts to move in the direction of the axis direction foot end, the movable element collides with it.64 thus against the third restriction section 96 between the first restriction section 68 and the second restriction section 76 , which makes it possible to move the movable element 64 to prevent it even more effectively from moving in the direction of the axis direction foot end. Seventh exemplary embodiment

[0092] As in Fig. Figure 13 shows a seventh exemplary embodiment on the upper surface of the vehicle at a position of the first engagement teeth. 34 and the second interventional tooth 40 , at which the measure to which the first intervention teeth 34 and the second surgical teeth 40 of the rotating element 28 into the movable element 64 biting or digging, the largest is a third restriction section 96 ordered. In addition, the third restriction section is 96on the underside of the vehicle at the first restriction section 68 arranged.

[0093] Furthermore, the third restriction section configures 96 a vehicle underside end section of a deformation section 94 , which is on the side wall 72 the cover plate 50 is trained. The third restriction section 96 is between an axially oriented front end of a cylinder 58 , which serves as a tubular element that defines the first restriction section 68 configured, and the second restriction section 76 on the outside of a path of movement of the moving element 64 arranged in the direction of the front end of the axis.

[0094] On a section of the vehicle's underside within the third restriction section 96 is inside the cover plate 50 a third deformation-allowing section 98configured. The moving element 64 , which has been compressed in the axial direction, is able to change its position with respect to the axial direction of the movable element 64 to deform in the orthogonal direction, so that it expands the space in the third deformation-allowing section 98 proven.

[0095] In the present exemplary embodiment, the movable element 64 , which is a consequence of the fact that it is caused by the first intervention teeth 34 and the second surgical teeth 40 of the rotating element 28 , which attempt to move in the direction of withdrawal (the direction of the arrow) B in Fig. 14) to rotate, has been compressed. is pressed, in a position to move with respect to the axial direction of the movable element. 64 to deform in the orthogonal direction, so that it expands the space in the third deformation-allowing section 98substantiated. Thus, the section of the movable element is located 64 , which is located in the third deformation-permitting section 98 has extended in the axial direction of the front end section of the cylinder 58 the third restriction section 96 opposite. If the moving element 64 As it attempts to move in the direction of the axis direction foot end, the extended section of the movable element thus collides with it. 64 within the third deformation-permitting section 98 against the third restriction section 96 This allows the movable element to 64 is even more effectively prevented from moving in the direction of the axis direction foot end.

[0096] In the present exemplary embodiment, the deformation section 94 outside the path of movement of the moving element 64provided, which makes it possible to suppress the moving element 64 a resistance from the deformation section 94 is subject to this if the movable element 64 in the direction of the axis's front end. This allows the movable element to 64 moved smoothly in the direction of the front end of the axis. Eighth exemplary embodiment

[0097] As in Fig. Figure 14 shows an eighth exemplary embodiment on the top of the vehicle, the dash-dot line. D , which extend from the center of rotation of the rotatable element 28 in the direction of the vehicle width inwards in a direction orthogonal to the axis center direction of the front end section of the cylinder 58 extends a second restriction section 76 arranged as one on the side wall 72 the cover plate50 trained restriction section serves.

[0098] In the present exemplary embodiment, the second restriction section 76 that is, on the upper surface of the vehicle, a rotational position of the first engagement teeth 34 and the second intervention teeth 40 arranged, to which the measure with which the first intervention teeth 34 and the second surgical teeth 40 into the movable element 64 biting or digging is the biggest. Furthermore, the second restriction section... 76 on the underside of the vehicle at the first restriction section 68 arranged as a restriction section at the axis center direction front end of the cylinder 58 serves this purpose. Such a configuration enables similar advantageous effects to those achievable with the first exemplary embodiment.

[0099] It should be noted that each of the above exemplary embodiments is configured to include the first deformation-allowing section. 66 and the first restriction section 68 as well as the second deformation-allowing section 74 and the second restriction section 76 exhibits. However, a configuration can also be used that only affects the first deformation-allowing section. 66 and the first restriction section 68 or only the second deformation-allowing section 74 and the second restriction section 76 exhibits.

[0100] Furthermore, each of the above exemplary embodiments is configured such that the first constraint section serving as a constraint section 68 at the axis center direction front end of the serving cylinder 58(configured at an end face of the tubular element) which serves as the tubular element, and the second constraint section serving as the constraint section 76 on the cover plate 50 The section intended to serve as a guide section is provided. However, a restriction section can be provided separately from the tubular element and the guide section, for example by attaching it to the leg plate. 16 of the frame 12 or similar measures are provided.

[0101] Furthermore, each of the above exemplary embodiments is configured such that the first deformation-allowing section 66 and the second deformation-allowing section 74 , which serve as deformation-allowing sections, on the cover plate 50are provided which serve as a guide section. However, a configuration can be used, for example, in which the axis center direction front end of the cylinder 58 outside the cover plate 50 is arranged and the movable element 64 is able to position itself between the axis-center direction front end of the cylinder 58 and the cover plate 50 regarding the axial direction of the cylinder 58 to extend in an orthogonal direction. The movable element 64 This is due to the section of the moving element. 64 , which is located between the axis-center direction front end of the cylinder 58 and the front end of the cylinder facing the axis center direction 58 butting cover plate 50 extended in the orthogonal direction, preventing it from moving in the direction of the axis direction foot end side.

[0102] In some of the above exemplary embodiments, the second restriction section 76 , which serves as a restriction section, and the second deformation-allowing section 74 , which serves as a deformation-allowing section, set close to the position where the measure with which the first occluding teeth 34 and the second surgical teeth 40 of the rotating element 28 into the movable element 64 biting or digging, is greatest. However, the position of a constraint section and the position of a deformation-allowing section can be set at locations other than those close to the position where the degree to which the first occluding teeth deform is greatest. 34 and the second intervention teeth 40 of the rotating element 28 into the movable element 64 biting or digging, the largest is.

[0103] The disclosure of Japanese patent application 2016 - 115 674 is hereby incorporated in its entirety by reference.

[0104] All cited documents, patent applications and technical standards mentioned in this specification are incorporated into this specification by reference to the same extent as it has been specifically and individually stated for each cited document, patent application or technical standard that it should be incorporated by reference. QUOTES INCLUDED IN THE DESCRIPTION

[0000] This list of documents cited by the applicant was automatically generated and is included solely for the reader's convenience. The list is not part of the German patent or utility model application. The DPMA accepts no liability for any errors or omissions. Cited patent literature

[0000] JP 2016115674

[0103]

Claims

[1] Webbing winding device with: a roller which winds up a webbing of a safety belt device by being rotated in a winding direction, and which is subjected to a rotational force in a pulling-out direction opposite to the winding direction when the webbing is pulled; a rotatable element that, when rotated in one direction, turns the roller in the winding direction and is turned in the other direction by the rotation of the roller in the pulling direction; a movable element which, in a vehicle emergency situation, is moved towards a front end of the axle direction in order to engage the rotatable element, which rotates the rotatable element in one direction and which is capable of deforming in a direction that intersects the axle direction; and a constraint section that engages with a deformed section of the movable element in order to restrict movement of the movable element in the direction of an axis direction foot end side. [2] Webbing winding device according to claim 1 further comprising a tubular element, wherein: the movable element is arranged inside the tubular element and one end of the tubular element is open on one side of the rotatable element; the movable element is moved under the pressure of a fluid supplied to another end side of the movable element in the direction of the axial direction and is moved outwards from one end of the tubular element in order to engage the rotatable element; the rotatable element has an engagement section that engages with the movable element, the engagement section has an engagement area with the movable element, and the engagement area increases and decreases due to a rotation of the rotatable element, which is accompanied by the movement of the movable element in the direction of the axial direction front end; and the restricted area is provided between a rotational position of the engagement position, at which the engagement area between the engagement section of the rotatable element and the movable element is greatest, and one end of the tubular element. [3] Webbing winding device according to claim 1 or 2, further comprising: a guide section that guides the movable element which has moved in a vehicle emergency situation, wherein the guide section is provided with a deformation-allowing section which is configured to allow deformation of the movable element further in the direction of the axle direction than the restriction section. [4] Webbing winding device according to claim 3, wherein the restricting section is provided on the guide section. [5] Webbing winding device according to claim 2 or 3, wherein the restricting section is provided on a section of one end of the tubular element. [6] Webbing winding device according to claim 5, wherein the confining section is configured as a surface of one end of the tubular element and the movable element is able to deform on an outside surface of the one end of the tubular element in the direction of a radial outside of the tubular element.