WO2016199525A1 - シートベルト用リトラクタ - Google Patents
シートベルト用リトラクタ Download PDFInfo
- Publication number
- WO2016199525A1 WO2016199525A1 PCT/JP2016/063585 JP2016063585W WO2016199525A1 WO 2016199525 A1 WO2016199525 A1 WO 2016199525A1 JP 2016063585 W JP2016063585 W JP 2016063585W WO 2016199525 A1 WO2016199525 A1 WO 2016199525A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- pawl
- friction ring
- clutch housing
- seat belt
- contact
- Prior art date
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R22/00—Safety belts or body harnesses in vehicles
- B60R22/34—Belt retractors, e.g. reels
- B60R22/46—Reels with means to tension the belt in an emergency by forced winding up
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R22/00—Safety belts or body harnesses in vehicles
- B60R22/34—Belt retractors, e.g. reels
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R22/00—Safety belts or body harnesses in vehicles
- B60R22/34—Belt retractors, e.g. reels
- B60R22/46—Reels with means to tension the belt in an emergency by forced winding up
- B60R22/4619—Transmission of tensioning power by cable, e.g. using a clutch on reel side
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R22/00—Safety belts or body harnesses in vehicles
- B60R22/34—Belt retractors, e.g. reels
- B60R22/46—Reels with means to tension the belt in an emergency by forced winding up
- B60R2022/4666—Reels with means to tension the belt in an emergency by forced winding up characterised by electric actuators
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R22/00—Safety belts or body harnesses in vehicles
- B60R22/34—Belt retractors, e.g. reels
- B60R22/46—Reels with means to tension the belt in an emergency by forced winding up
- B60R2022/468—Reels with means to tension the belt in an emergency by forced winding up characterised by clutching means between actuator and belt reel
Definitions
- the present invention relates to a seat belt retractor, and more particularly, to a seat belt retractor that can wind up slack of a seat belt by rotating a spindle by an electric actuator.
- the state of sudden deceleration of the vehicle is detected by a sensor, and the spindle is rotated in the winding direction by a motor. And if there is a possibility of collision, wind up a certain amount of seat belt and lightly restrain the occupant, and at the time of collision, actuate the explosive pretensioner to forcibly wind up the seat belt, Securely protect passengers.
- the power transmission mechanism that transmits the power from the motor to the spindle is transmitted to the spindle in order to prevent the rotation on the spindle side from being transmitted to the motor by the operation of the pretensioner.
- a clutch mechanism for shutting off is provided.
- a motor that rotates a gear wheel by using a pawl disposed in a pawl sliding groove of the gear wheel to disengage and disengage a clutch housing and a gear wheel that are opposed to each other. Switching between power transmission and interruption.
- the pawl is held by an outer gear cover that accommodates the clutch housing and the gear wheel via a friction ring.
- the friction ring 142 that supports the pawl has a plurality of claw portions 142b each having a substantially hemispherical protrusion 142c protruding outward in the radial direction.
- the friction ring 142 holds the outer gear cover 126 by frictional force by pressing the claw 142b toward the convex portion 126a provided on the outer gear cover 126 and bringing the projection 142c into contact with the inner peripheral surface of the convex portion 126a. Has been.
- Patent Document 1 when the claw portion 142b of the friction ring 142 is assembled to the convex portion 126a of the outer gear cover 126, the claw portion 142b is temporarily contracted and then set. The skill of was demanded.
- the present invention has been made in view of the above-described circumstances, and an object of the present invention is to provide a seatbelt retractor that can easily assemble a friction ring to an outer gear cover.
- a spindle for winding up a seat belt An electric actuator that generates power to rotate the spindle; A power transmission mechanism capable of transmitting power from the electric actuator to the spindle;
- a seat belt retractor comprising:
- the power transmission mechanism is A clutch housing that rotates with the spindle and has an engaged portion;
- a pawl having a first engaging portion engageable with an engaged portion of the clutch housing;
- a gear wheel that has a holding part that holds the pawl in a movable manner, and that is arranged to face the clutch housing and rotates according to the rotation of the electric actuator;
- An outer gear cover that houses the clutch housing and the gear wheel;
- a friction ring that allows the relative movement in the radial direction of the pawl to engage with the pawl and is held by the outer gear cover by a frictional force;
- the seat belt retractor according to (1) wherein the frictional force acts between an outer peripheral surface of the cylindrical portion of the outer gear cover and a contact piece of the friction ring.
- the contact piece includes a contact portion that extends in an axial direction from an inner diameter side of the annular plate portion of the friction ring and extends in a tangential direction of the outer peripheral surface of the cylindrical portion,
- the retractor for a seat belt according to (1) or (2) wherein the contact portion presses the outer peripheral surface of the cylindrical portion toward a radially inner side.
- an opening is formed in each of the contact pieces.
- the outer gear cover includes another cylindrical portion formed concentrically with the cylindrical portion on a radially outer side of the cylindrical portion, and the gear wheel is rotatably fitted to the other cylindrical portion.
- the second engagement portion is an engagement groove formed in the pawl,
- the engaged portion of the clutch housing is an internal tooth formed on the inner peripheral side of the clutch housing,
- the power transmission mechanism that transmits the power from the electric actuator to the spindle includes the clutch housing, the pawl that can be engaged with the clutch housing, and the pawl that holds the pawl to rotate the electric actuator.
- the friction ring includes another engagement portion that engages with the second engagement portion of the pawl, and a plurality of contact pieces that contact the outer peripheral surface of the cylindrical portion of the outer gear cover and press it radially inward. .
- the contact between the outer peripheral surface of the cylindrical portion and the contact piece makes it possible to easily assemble the friction ring to the outer gear cover while holding the pawl, thereby facilitating the automation of the assembly work. Can respond.
- the contact between the outer peripheral surface of the cylindrical portion and the contact piece comes into a linear contact, the wear resistance is improved and the durability is improved.
- FIG. 1 It is a perspective view of the retractor for seatbelts concerning this invention. It is a disassembled perspective view which shows an electric actuator and a power transmission mechanism. It is principal part sectional drawing which shows a power transmission mechanism. It is a perspective view of a clutch housing. It is a perspective view of a friction ring.
- (A) is a principal part side view which shows the state in which the contact piece of a friction ring contacts the outer peripheral surface of the cylindrical part of an outer gear cover
- (b) is principal part sectional drawing seen from VI direction of (a). It is. It is a figure for demonstrating the non-engagement state of the clutch at the time of a motor non-operation.
- (A) is a perspective view of a conventional friction ring
- (b) is a main part sectional view showing a state in which the protrusion of the friction ring is in contact with the inner peripheral surface of the cylindrical portion of the outer gear cover
- c) is a cross-sectional view of an essential part taken along line XI-XI in (b).
- the seat belt retractor 10 of the present embodiment includes a spindle 12 that winds up a seat belt (not shown), and a winding that urges the spindle 12 in the seat belt winding direction.
- a spring device 13 a lock mechanism 14 that locks a seat belt pull-out operation according to acceleration detected by an unillustrated acceleration sensor, a motor 34 that is an electric actuator that generates power for rotating the spindle 12, and the spindle 12 And a power transmission mechanism 19 capable of transmitting power from the motor 34 to the spindle 12.
- the spindle 12 is rotatably supported by the retractor frame 11 at both ends. Further, a torsion bar (not shown) constituting an energy absorption mechanism is provided in the spindle 12. The torsion bar is connected to the spindle 12 on one end side (left end side in FIG. 1) and connected to a tread head (not shown) to which the force from the pretensioner 15 is input on the other end side (right end side in FIG. 1). Is done.
- the pretensioner 15 strongly pushes the ball (not shown) by the gas generated by igniting the explosive, and the ball moves along the groove of the pinion (not shown).
- the rotation of the pinion is transmitted to the tread head, the torsion bar, and the spindle 12 via the lock mechanism 14 to wind up the seat belt.
- the motor assembly 16 is attached to the left side surface of the retractor frame 11 in the drawing, and an outer gear cover 26 in which the power transmission mechanism 19 is accommodated is attached. Further, a winding spring device 13 is attached to the left side surface of the outer gear cover 26.
- the motor assembly 16 located below the retractor frame 11 includes a motor case 31, a motor 34, a first gear 35, a drive circuit board 37, and a case lid 38.
- the first gear 35 is attached to the rotating shaft of the motor 34 and meshes with the second gear 70 of the power transmission mechanism 19.
- the second gear 70 that meshes with the first gear 35 is attached to one end of the support shaft 71, and the third gear 72 is attached to the other end of the support shaft 71. It meshes with a final gear 58 formed on the outer peripheral surface of the wheel 57.
- the support shaft 71 is rotatably supported by the outer gear cover 26 by a pair of bearings 73.
- the first gear 35, the second gear 70, the third gear 72, and the final gear 58 constitute a gear assembly.
- the clutch mechanism 46 constituting the power transmission mechanism 19 includes a gear wheel 57 having a final gear 58 formed on the outer peripheral surface, a pair of pawls 41, a friction ring 42, and a cover ring 43. , The gear cover 44, and the clutch housing 50.
- the clutch housing 50 includes a boss portion 51, an angular shaft 52 extending in the axial direction from the center of the boss portion 51, and an engaged portion in which the pawl 41 engages with the inner peripheral surface.
- a plurality of thin-walled rupture portions 55 connected at four locations).
- the male spline 12a of the spindle 12 is spline-fitted to the female spline 51a formed on the spindle 12 side of the boss portion 51.
- the clutch housing 50 rotates integrally with the spindle 12.
- a spring core (not shown) of the take-up spring device 13 is fitted to the square shaft 52 of the clutch housing 50, and the spindle 12 is always urged in the take-up direction.
- the gear wheel 57 includes a large-diameter side cylindrical portion 60 having a final gear 58 formed on the outer peripheral surface, and an inwardly extending inwardly extending from a portion near the other axial end (closer to the outer gear cover 26) of the large-diameter side cylindrical portion 60. And a small-diameter side cylindrical portion 62 that extends from the inner diameter portion of the inward flange portion 61 toward the retractor frame 11 and has a shorter axial length than the large-diameter side cylindrical portion 60.
- the cylinder part 53 of the clutch housing 50 is inserted toward the inward flange 61 from the retractor frame 11 side.
- the clutch housing 50 is accommodated in the gear wheel 57.
- the inner peripheral surface of the large-diameter side cylindrical portion 60 faces the outer peripheral surface of the cylindrical portion 53 of the clutch housing 50 so as to be relatively rotatable
- the outer peripheral surface of the small-diameter side cylindrical portion 62 is the inner peripheral surface of the clutch housing 50. It faces the inner teeth 53a formed on the inner surface 53a in a relatively rotatable manner.
- the inner peripheral surface of the small-diameter side cylinder portion 62 is rotatably fitted on a large-diameter ring portion 26b formed concentrically with the clutch housing 50 from the side wall 26a of the outer gear cover 26 toward the clutch housing 50.
- a small-diameter ring portion 26c having a smaller diameter than the large-diameter ring portion 26b is concentrically formed on the inner diameter side of the large-diameter ring portion 26b on the side wall 26a of the outer gear cover 26.
- a pair of pawl sliding grooves 62 a that are holding portions for holding the pair of pawls 41 are formed on the outer peripheral portion of the small diameter side cylindrical portion 62 of the gear wheel 57 on the gear cover 44 side.
- the pair of pawl sliding grooves 62 a are arranged at the counter electrode position (position rotated by 180 °) on the outer peripheral surface of the small diameter side cylinder portion 62, and the engaging portion (first engaging portion) 41 a of the pawl 41 It has an opening 62b that opens to face 53a, and extends in opposite directions along the shape of the pawl 41 from the opening 62b.
- Each of the pair of pawls 41 has an engaging portion 41a on one end side, has a curved shape slightly curved from one end side to the other end side, and is slidably held in the pawl sliding groove 62a.
- the first position P1 (see FIG. 7), which is located when the motor 34 is not operating, and the engaging portion 41a are connected to the inner teeth 53a of the clutch housing 50 by the motor 34 operating. Is moved to a second position P2 (see FIG. 9) which is located when engaged.
- the friction ring 42 includes an annular plate portion 42d and a pair of protrusions (a phase of 180 ° on the outer diameter side of the annular plate portion 42d) that protrudes radially outward. And a plurality of (six in this embodiment) contact pieces 42b extending in the axial direction from the inner diameter side of the annular plate portion 42d, and formed by a single plate-like member. Is done. Each contact piece 42b is formed by bending a plate-like portion having a predetermined width extending inward from the inner diameter side of the annular plate portion 42d in the axial direction.
- each contact piece 42b is formed in a substantially V-shaped cross section that extends in the axial direction while slightly inclining radially inward and then reverses and inclines radially outward. The portion where the inclination is reversed continues smoothly by the curved surface 42c. Therefore, the curved surface 42c has the same predetermined width as the contact piece 42b, and is formed to extend linearly in the tangential direction of the outer peripheral surface of the small diameter ring portion 26c.
- the friction ring 42 presses the outer peripheral surface of the small-diameter ring portion 26c, which is a non-driven portion formed on the outer gear cover 26, radially inward by the urging force of the contact piece 42b itself. More specifically, the curved surface 42c of the friction ring 42 is in line contact with the outer peripheral surface of the small diameter ring portion 26c by the elastic force of the contact piece 42b. As a result, when the contact piece 42b of the friction ring 42 receives a force in the rotational direction, a frictional force in the direction opposite to the rotational direction is generated between the contact piece 42b and the small-diameter ring portion 26c of the outer gear cover 26. The ring 42 is held by the small diameter ring portion 26c.
- each contact piece 42b is formed in a substantially V-shaped cross section is simply pushed straight from the axial direction toward the small diameter ring portion 26c of the outer gear cover 26, so that each contact piece 42b is an outer peripheral surface of the small diameter ring portion 26c. And is set on the outer gear cover 26. For this reason, the work of assembling the friction ring 42 to the outer gear cover 26 may be automated.
- the pair of protrusions 42a of the friction ring 42 are held in the engagement grooves (second engagement portions) 41b of the pawls 41 (see FIG. 7).
- the side of the friction ring 42 is covered with a cover ring 43 (see FIG. 3).
- the friction ring 42 is configured to be heavier than one pawl 41.
- the friction ring 42 starts to rotate, if the friction ring 42 is lighter than the weight of the pawl 41, the friction ring 42 is difficult to operate properly due to the influence of the weight of the pawl 41. Therefore, in order to operate the friction ring 42 appropriately, the weight of the friction ring 42 is set to the above relationship.
- the operation of the seatbelt retractor 10 of this embodiment will be described.
- the motor 34 is driven before the collision by an ECU (not shown), and the spindle 12 is rotated via the power transmission mechanism 19 to wind the seat belt.
- the motor 34 is reversely rotated so that the seat belt can be pulled out.
- the pretensioner 15 operates to forcibly wind up the seat belt.
- the operation of the clutch mechanism 46 will be described with reference to FIGS.
- the pawl 41 is positioned at the innermost part of the pawl sliding groove 62 a, and the engaging portion 41 a of the pawl 41 is the clutch housing 50.
- the clutch housing 50 and the pawl 41 are not engaged with each other. Therefore, only the clutch housing 50 integrated with the spindle 12 can rotate, and the seat belt can be normally wound and pulled out.
- the contact piece 42b of the friction ring 42 slides on the outer peripheral surface of the small diameter ring part 26c of the outer gear cover 26 against the frictional force between the contact piece 42b and the small diameter ring part 26c.
- the curved surface 42c of the contact piece 42b that contacts the outer peripheral surface of the small-diameter ring portion 26c has a larger contact area than the conventional friction ring 142 (see FIG. 11) that contacts the substantially hemispherical protrusion 142c. Become. For this reason, even when the spring characteristics of the contact pieces 42b vary, the variation in the contact area can be reduced, and as a result, the variation in the operating torque can be reduced.
- the power transmission mechanism 19 that transmits the power from the motor 34 to the spindle 12 is engageable with the clutch housing 50 and the clutch housing 50.
- the friction ring 42 includes a protrusion 42a that engages with the engagement groove 41b of the pawl 41, and a plurality of contact pieces 42b that contact the outer peripheral surface of the small-diameter ring portion 26c of the outer gear cover 26 and press it radially inward.
- the friction ring 42 can be easily assembled to the outer gear cover 26 while holding the pawl 41 by the contact between the outer peripheral surface of the small-diameter ring portion 26c and the contact piece 42b. Can be easily handled. Further, since the contact between the outer peripheral surface of the small-diameter ring portion 26c and the contact piece 42b comes in a linear shape, the wear resistance is improved and the durability is improved. In particular, in the present embodiment, the frictional force described above acts between the outer peripheral surface of the small diameter ring portion 26 c of the outer gear cover 26 and the contact piece 42 b of the friction ring 42.
- the contact piece 42b includes a curved surface 42c extending in the tangential direction of the outer peripheral surface of the small diameter ring portion 26c, and the curved surface 42c presses the outer peripheral surface of the small diameter ring portion 26c toward the radial inner side. Even if the outer peripheral surface of the portion 26c and the curved surface 42c increase the contact area by line contact and the spring characteristics of the contact pieces 42b vary, the contact area variation can be reduced. Torque variation can be reduced. Moreover, since the contact piece 42b is formed by a bending process, it can be easily processed compared with the case where the conventional protrusion 142c is provided.
- the outer gear cover 26 includes a large-diameter ring portion 26b formed concentrically with the small-diameter ring portion 26c on the radially outer side of the small-diameter ring portion 26c. Since the large-diameter ring portion 26b is rotatably fitted to the gear wheel 57 as a bearing of the gear wheel 57, the assembly structure of the friction ring 42 and the outer gear cover 26 of the present embodiment can be changed from the surrounding structure. Can be designed without.
- the seat belt retractor described above is a preferred example of the present invention, and other embodiments can be implemented or performed by various methods.
- the invention is not limited to the detailed shape, size, configuration, and the like of the components shown in the accompanying drawings unless otherwise specified in the present specification.
- expressions and terms used in the present specification are for the purpose of explanation, and are not limited thereto unless otherwise specified.
- FIG. 10 shows a friction ring 42 according to a modification of the present invention.
- an opening 42e is formed in each contact piece 42b.
- the opening 42e can adjust the spring force of the contact piece 42b while ensuring the contact area by the line contact between the outer peripheral surface of the small-diameter ring portion 26c and the curved surface 42c. It can be adjusted optimally. Specifically, the spring force can be lowered and the frictional contact force can be lowered by the opening 42e, so that the operating torque of the friction ring 42 can be adjusted.
- the opening 42e is formed at least between the inner diameter side end portion 42d1 of the annular plate portion 42d and the curved surface 42c as the contact portion in the extending direction of the contact piece 42b.
- the friction ring 42 is configured to be heavier than one pawl 41 from the viewpoint of operability at the time of starting rotation.
- the protrusion 42a of the friction ring 42 in this modification is separated from the bottom surface (see FIG. 6) of the engagement groove 41b of the pawl 41 with respect to the horizontal plane H of the annular plate portion 42d, that is, FIG. ) Is inclined upward (opposite to the extending direction of the contact piece 42b) with respect to the horizontal plane H of the annular plate portion 42d.
- the contact pressure between the pawl 41 and the friction ring 42 becomes strong.
- the pawls 41 may become unstable because they interfere with each other except when necessary.
- the contact pressure between the pawl 41 and the friction ring 42 can be lowered by inclining the protrusion 42a slightly upward with respect to the horizontal plane H of the annular plate 42a.
- the engagement groove 41 b formed in the pawl 41 and the protrusion 42 a formed in the friction ring 42 are engaged so as to allow the pawl 41 to move in the radial direction relative to the friction ring 42.
- the present invention is not limited to this.
- the second engaging portion of the pawl 41 and the other engaging portion of the friction ring 42 are engaged so as to allow radial movement of the pawl 41 relative to the friction ring 42.
- other structures may be used.
- the engaging portion 41a of the pawl 41 can be engaged with the inner teeth 53a formed on the inner peripheral side of the clutch housing 50, and the power from the electric actuator can be transmitted to the spindle 12.
- the present invention is not limited to this. That is, the present invention is a structure in which the engaged portion of the clutch housing 50 and the first engaging portion of the pawl 41 are engaged and disengaged so that the power from the electric actuator can be transmitted to and disconnected from the spindle 12.
- other structures may be used.
- the pawl 41 is movably held by the pawl sliding groove 62a.
- the holding portion of the present invention is not limited to this as long as the pawl 41 is movably held.
- other structures may be used.
- the present invention is based on a Japanese patent application filed on June 8, 2015 (Japanese Patent Application No. 2015-116092) and a Japanese patent application filed on January 27, 2016 (Japanese Patent Application No. 2016-013571). The contents are incorporated herein by reference.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Automotive Seat Belt Assembly (AREA)
Abstract
Description
(1) シートベルトを巻き取るスピンドルと、
該スピンドルを回転する動力を発生する電動アクチュエータと、
前記電動アクチュエータからの動力を前記スピンドルに伝達可能な動力伝達機構と、
を備えるシートベルト用リトラクタであって、
前記動力伝達機構は、
前記スピンドルと共に回転し、被係合部を有するクラッチハウジングと、
前記クラッチハウジングの被係合部と係合可能な第1係合部を有するパウルと、
前記パウルを移動可能に保持する保持部を有し、前記クラッチハウジングに対向配置されて前記電動アクチュエータの回転に応じて回転するギヤホイールと、
前記クラッチハウジング及び前記ギヤホイールを収容するアウターギヤカバーと、
前記パウルの径方向相対移動を許容して前記パウルに係合すると共に、摩擦力により前記アウターギヤカバーに保持されるフリクションリングと、
を備え、前記クラッチハウジングの被係合部と前記パウルの第1係合部との係脱によって、前記電動アクチュエータからの動力を前記スピンドルに伝達可能及び遮断可能に切り換えるクラッチ機構を構成し、
前記フリクションリングは、前記パウルの径方向相対移動を許容するように前記パウルの第2係合部に係合する他の係合部と、前記アウターギヤカバーに形成された円筒部の外周面に接触して前記外周面を径方向内側に向かって押圧する複数の接触片と、を備えることを特徴とするシートベルト用リトラクタ。
(2)前記摩擦力は、前記アウターギヤカバーの前記円筒部の外周面と前記フリクションリングの接触片との間に作用することを特徴とする(1)に記載のシートベルト用リトラクタ。
(3) 前記接触片は、前記フリクションリングの環状板部の内径側から軸方向に延設され、且つ、前記円筒部の外周面の接線方向に延びる接触部を備え、
該接触部が前記円筒部の外周面を径方向内側に向かって押圧することを特徴とする(1)または(2)に記載のシートベルト用リトラクタ。
(4) 前記各接触片には、開口部が形成されることを特徴とする(3)に記載のシートベルト用リトラクタ。
(5) 前記開口部は、前記接触片の延設方向において、少なくとも前記環状板部の内径側端部と前記接触部との間に形成されることを特徴とする(4)に記載のシートベルト用リトラクタ。
(6) 前記アウターギヤカバーは、前記円筒部の径方向外側に前記円筒部と同心に形成された他の円筒部を備え、前記ギヤホイールが前記他の円筒部に回転自在に嵌合することを特徴とする(1)から(5)のいずれかに記載のシートベルト用リトラクタ。
(7) 前記第2係合部は、前記パウルに形成された係合溝であり、
前記他の係合部は、前記フリクションリングに形成された突起部であることを特徴とする(1)から(6)のいずれかに記載のシートベルト用リトラクタ。
(8) 前記突起部は、前記フリクションリングの環状板部の水平面に対して前記係合溝から離間する方向に傾斜していることを特徴とする(7)に記載のシートベルト用リトラクタ。
(9) 前記フリクションリングは、1つの前記パウルよりも重いことを特徴とする(1)~(8)のいずれかに記載のシートベルト用リトラクタ。
(10) 前記クラッチハウジングの被係合部は、クラッチハウジングの内周側に形成された内歯であり、
前記パウルの第1係合部は、前記内歯と噛み合うことが可能な構造であることを特徴とする(1)~(9)のいずれかに記載のシートベルト用リトラクタ。
まず、図7に示すように、モータ34による巻き取りが行なわれていない場合は、パウル41は、パウル摺動溝62aの最奥部に位置し、パウル41の係合部41aはクラッチハウジング50の内歯53aより内径側に位置し、クラッチハウジング50とパウル41とは非係合である。このため、スピンドル12と一体のクラッチハウジング50のみが回転可能となり、シートベルトの通常の巻き取り及び引き出しが可能である。
特に、本実施形態では、上述した摩擦力は、アウターギヤカバー26の小径リング部26cの外周面とフリクションリング42の接触片42bとの間に作用している。
また、接触片42bは、曲げ加工で形成されるため、従来の突起部142cを設ける場合に比べて、容易に加工することができる。
ただし、この変形例においても、フリクションリング42は、回転始動時の作動性の観点から、1つのパウル41よりも重く構成されている。
12 スピンドル
19 動力伝達機構
26 アウターギヤカバー
26b 大径リング部(他の円筒部)
26c 小径リング部(円筒部)
34 モータ(電動アクチュエータ)
41 パウル
41a 係合部(第1係合部)
41b 係合溝(第2係合部)
42 フリクションリング
42a 突起部(他の係合部)
42b 接触片
42c 湾曲面(接触部)
46 クラッチ機構
50 クラッチハウジング
53a 内歯(被係合部)
57 ギヤホイール
62a パウル摺動溝(保持部)
Claims (10)
- シートベルトを巻き取るスピンドルと、
該スピンドルを回転する動力を発生する電動アクチュエータと、
前記電動アクチュエータからの動力を前記スピンドルに伝達可能な動力伝達機構と、
を備えるシートベルト用リトラクタであって、
前記動力伝達機構は、
前記スピンドルと共に回転し、被係合部を有するクラッチハウジングと、
前記クラッチハウジングの被係合部と係合可能な第1係合部を有するパウルと、
前記パウルを移動可能に保持する保持部を有し、前記クラッチハウジングに対向配置されて前記電動アクチュエータの回転に応じて回転するギヤホイールと、
前記クラッチハウジング及び前記ギヤホイールを収容するアウターギヤカバーと、
前記パウルの径方向相対移動を許容して前記パウルに係合すると共に、摩擦力により前記アウターギヤカバーに保持されるフリクションリングと、
を備え、前記クラッチハウジングの被係合部と前記パウルの第1係合部との係脱によって、前記電動アクチュエータからの動力を前記スピンドルに伝達可能及び遮断可能に切り換えるクラッチ機構を構成し、
前記フリクションリングは、前記パウルの径方向相対移動を許容するように前記パウルの第2係合部に係合する他の係合部と、前記アウターギヤカバーに形成された円筒部の外周面に接触して前記外周面を径方向内側に向かって押圧する複数の接触片と、を備えることを特徴とするシートベルト用リトラクタ。 - 前記摩擦力は、前記アウターギヤカバーの前記円筒部の外周面と前記フリクションリングの接触片との間に作用することを特徴とする請求項1に記載のシートベルト用リトラクタ。
- 前記接触片は、前記フリクションリングの環状板部の内径側から軸方向に延設され、且つ、前記円筒部の前記外周面の接線方向に延びる接触部を備え、
該接触部が前記円筒部の外周面を径方向内側に向かって押圧することを特徴とする請求項1または2に記載のシートベルト用リトラクタ。 - 前記各接触片には、開口部が形成されることを特徴とする請求項3に記載のシートベルト用リトラクタ。
- 前記開口部は、前記接触片の延設方向において、少なくとも前記環状板部の内径側端部と前記接触部との間に形成されることを特徴とする請求項4に記載のシートベルト用リトラクタ。
- 前記アウターギヤカバーは、前記円筒部の径方向外側に前記円筒部と同心に形成された他の円筒部を備え、前記ギヤホイールが前記他の円筒部に回転自在に嵌合することを特徴とする請求項1から5のいずれか1項に記載のシートベルト用リトラクタ。
- 前記第2係合部は、前記パウルに形成された係合溝であり、
前記他の係合部は、前記フリクションリングに形成された突起部であることを特徴とする請求項1から6のいずれか1項に記載のシートベルト用リトラクタ。 - 前記突起部は、前記フリクションリングの環状板部の水平面に対して前記係合溝から離間する方向に傾斜していることを特徴とする請求項7に記載のシートベルト用リトラクタ。
- 前記フリクションリングは、1つの前記パウルよりも重いことを特徴とする請求項1~8のいずれか1項に記載のシートベルト用リトラクタ。
- 前記クラッチハウジングの被係合部は、クラッチハウジングの内周側に形成された内歯であり、
前記パウルの第1係合部は、前記内歯と噛み合うことが可能な構造であることを特徴とする請求項1~9のいずれか1項に記載のシートベルト用リトラクタ。
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2017523159A JP6450001B2 (ja) | 2015-06-08 | 2016-05-02 | シートベルト用リトラクタ |
KR1020177034759A KR102026286B1 (ko) | 2015-06-08 | 2016-05-02 | 시트 벨트용 리트랙터 |
EP16807232.0A EP3305606B1 (en) | 2015-06-08 | 2016-05-02 | Seatbelt retractor |
CN201680033731.3A CN107635834B (zh) | 2015-06-08 | 2016-05-02 | 安全带用卷收器 |
US15/580,581 US10421430B2 (en) | 2015-06-08 | 2016-05-02 | Seatbelt retractor |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2015-116092 | 2015-06-08 | ||
JP2015116092 | 2015-06-08 | ||
JP2016013571 | 2016-01-27 | ||
JP2016-013571 | 2016-01-27 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2016199525A1 true WO2016199525A1 (ja) | 2016-12-15 |
Family
ID=57504826
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2016/063585 WO2016199525A1 (ja) | 2015-06-08 | 2016-05-02 | シートベルト用リトラクタ |
Country Status (6)
Country | Link |
---|---|
US (1) | US10421430B2 (ja) |
EP (1) | EP3305606B1 (ja) |
JP (1) | JP6450001B2 (ja) |
KR (1) | KR102026286B1 (ja) |
CN (1) | CN107635834B (ja) |
WO (1) | WO2016199525A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP7434391B2 (ja) | 2022-03-09 | 2024-02-20 | オートリブ ディベロップメント エービー | シートベルト用リトラクタ |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102018211226B4 (de) * | 2018-07-06 | 2020-08-13 | Autoliv Development Ab | Gurtaufroller für eine Sicherheitsgurteinrichtung eines Kraftfahrzeuges |
CN112389363B (zh) * | 2019-08-16 | 2022-03-18 | 比亚迪股份有限公司 | 安全带用卷绕器及其离合机构、车辆 |
CN113291252A (zh) * | 2020-02-21 | 2021-08-24 | 奥托立夫开发公司 | 离合装置 |
KR102624901B1 (ko) * | 2020-12-31 | 2024-01-15 | 주식회사 우신세이프티시스템 | 구동모터를 포함하는 전동식 프리텐셔너 |
WO2024019332A1 (ko) * | 2022-07-18 | 2024-01-25 | 아우토리브 디벨롭먼트 아베 | 프리 텐셔닝 모듈 및 그가 적용된 시트벨트 리트랙터 |
Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2008149746A1 (ja) * | 2007-05-31 | 2008-12-11 | Autoliv Development Ab | シートベルト装置 |
JP2009078633A (ja) * | 2007-09-25 | 2009-04-16 | Autoliv Development Ab | シートベルト用リトラクタ |
WO2009101992A1 (ja) * | 2008-02-15 | 2009-08-20 | Autoliv Development Ab | シートベルト用リトラクタ |
JP2009286213A (ja) * | 2008-05-28 | 2009-12-10 | Tokai Rika Co Ltd | ウエビング巻取装置 |
WO2011055763A1 (ja) * | 2009-11-04 | 2011-05-12 | オートリブ ディベロップメント エービー | シートベルト用リトラクタ |
WO2011059010A1 (ja) * | 2009-11-11 | 2011-05-19 | オートリブ ディベロップメント エービー | シートベルト用リトラクタ |
JP2011162157A (ja) * | 2010-02-15 | 2011-08-25 | Autoliv Development Ab | シートベルト用リトラクタ |
JP2014218133A (ja) * | 2013-05-07 | 2014-11-20 | オートリブ ディベロップメント エービー | 乗員保護装置 |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4571427B2 (ja) * | 2004-04-01 | 2010-10-27 | 株式会社東海理化電機製作所 | ウエビング巻取装置 |
CA2562973A1 (en) * | 2004-04-01 | 2005-10-20 | Kabushiki Kaisha Tokai-Rika-Denki-Seisakusho | Webbing winder |
DE102013220956B3 (de) * | 2013-10-16 | 2015-01-29 | Autoliv Development Ab | Getriebe für einen reversiblen Gurtstraffer |
-
2016
- 2016-05-02 KR KR1020177034759A patent/KR102026286B1/ko active IP Right Grant
- 2016-05-02 JP JP2017523159A patent/JP6450001B2/ja active Active
- 2016-05-02 US US15/580,581 patent/US10421430B2/en active Active
- 2016-05-02 EP EP16807232.0A patent/EP3305606B1/en active Active
- 2016-05-02 CN CN201680033731.3A patent/CN107635834B/zh active Active
- 2016-05-02 WO PCT/JP2016/063585 patent/WO2016199525A1/ja active Application Filing
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2008149746A1 (ja) * | 2007-05-31 | 2008-12-11 | Autoliv Development Ab | シートベルト装置 |
JP2009078633A (ja) * | 2007-09-25 | 2009-04-16 | Autoliv Development Ab | シートベルト用リトラクタ |
WO2009101992A1 (ja) * | 2008-02-15 | 2009-08-20 | Autoliv Development Ab | シートベルト用リトラクタ |
JP2009286213A (ja) * | 2008-05-28 | 2009-12-10 | Tokai Rika Co Ltd | ウエビング巻取装置 |
WO2011055763A1 (ja) * | 2009-11-04 | 2011-05-12 | オートリブ ディベロップメント エービー | シートベルト用リトラクタ |
WO2011059010A1 (ja) * | 2009-11-11 | 2011-05-19 | オートリブ ディベロップメント エービー | シートベルト用リトラクタ |
JP2011162157A (ja) * | 2010-02-15 | 2011-08-25 | Autoliv Development Ab | シートベルト用リトラクタ |
JP2014218133A (ja) * | 2013-05-07 | 2014-11-20 | オートリブ ディベロップメント エービー | 乗員保護装置 |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP7434391B2 (ja) | 2022-03-09 | 2024-02-20 | オートリブ ディベロップメント エービー | シートベルト用リトラクタ |
Also Published As
Publication number | Publication date |
---|---|
CN107635834B (zh) | 2019-08-13 |
US10421430B2 (en) | 2019-09-24 |
EP3305606A4 (en) | 2018-11-21 |
CN107635834A (zh) | 2018-01-26 |
EP3305606A1 (en) | 2018-04-11 |
EP3305606B1 (en) | 2019-11-13 |
JPWO2016199525A1 (ja) | 2018-02-22 |
KR102026286B1 (ko) | 2019-09-27 |
US20180178750A1 (en) | 2018-06-28 |
KR20170141251A (ko) | 2017-12-22 |
JP6450001B2 (ja) | 2019-01-09 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP6450001B2 (ja) | シートベルト用リトラクタ | |
US20170021797A1 (en) | Seat belt device | |
JP5388042B2 (ja) | シートベルト用リトラクタ | |
WO2012165410A1 (ja) | シートベルト用リトラクタ | |
JP2006282097A (ja) | シートベルト用リトラクター | |
WO2017006788A1 (ja) | ウェビング巻取装置 | |
JP5648924B2 (ja) | シートベルト用リトラクタ | |
JP6175099B2 (ja) | ウェビング巻取装置 | |
JP2020083147A (ja) | ウェビング巻取装置 | |
JP5135604B2 (ja) | シートベルト用リトラクタ | |
JP5252149B2 (ja) | シートベルト用リトラクタ | |
JP5168519B2 (ja) | シートベルト用リトラクタ | |
JP5331048B2 (ja) | ウエビング巻取装置 | |
JP5137005B2 (ja) | シートベルト用リトラクタ | |
JP6211136B1 (ja) | ウェビング巻取制御装置 | |
US11691593B2 (en) | Engaging and disengaging device, seat belt retractor, and seat belt assembly | |
JP6081395B2 (ja) | ウェビング巻取装置 | |
JP5767166B2 (ja) | シートベルト用リトラクタ | |
JP5692171B2 (ja) | シートベルト用リトラクタ | |
JP5263626B2 (ja) | シートベルト用リトラクタ | |
JP6081396B2 (ja) | ウェビング巻取装置 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 16807232 Country of ref document: EP Kind code of ref document: A1 |
|
ENP | Entry into the national phase |
Ref document number: 2017523159 Country of ref document: JP Kind code of ref document: A |
|
ENP | Entry into the national phase |
Ref document number: 20177034759 Country of ref document: KR Kind code of ref document: A |
|
WWE | Wipo information: entry into national phase |
Ref document number: 15580581 Country of ref document: US |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2016807232 Country of ref document: EP |