WO2022012447A1 - 卷收器传动机构 - Google Patents

卷收器传动机构 Download PDF

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Publication number
WO2022012447A1
WO2022012447A1 PCT/CN2021/105639 CN2021105639W WO2022012447A1 WO 2022012447 A1 WO2022012447 A1 WO 2022012447A1 CN 2021105639 W CN2021105639 W CN 2021105639W WO 2022012447 A1 WO2022012447 A1 WO 2022012447A1
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WO
WIPO (PCT)
Prior art keywords
pulley
transmission
retractor
angle
core wire
Prior art date
Application number
PCT/CN2021/105639
Other languages
English (en)
French (fr)
Inventor
王飞
汤丹
黄永亮
Original Assignee
延锋汽车智能安全系统有限责任公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 延锋汽车智能安全系统有限责任公司 filed Critical 延锋汽车智能安全系统有限责任公司
Publication of WO2022012447A1 publication Critical patent/WO2022012447A1/zh

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R22/00—Safety belts or body harnesses in vehicles
    • B60R22/34—Belt retractors, e.g. reels
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R22/00—Safety belts or body harnesses in vehicles
    • B60R22/34—Belt retractors, e.g. reels
    • B60R22/36—Belt retractors, e.g. reels self-locking in an emergency
    • B60R22/40—Belt retractors, e.g. reels self-locking in an emergency responsive only to vehicle movement
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R22/00—Safety belts or body harnesses in vehicles
    • B60R22/34—Belt retractors, e.g. reels
    • B60R2022/3402—Retractor casings; Mounting thereof
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R22/00—Safety belts or body harnesses in vehicles
    • B60R22/34—Belt retractors, e.g. reels
    • B60R22/36—Belt retractors, e.g. reels self-locking in an emergency
    • B60R22/40—Belt retractors, e.g. reels self-locking in an emergency responsive only to vehicle movement
    • B60R2022/401—Belt retractors, e.g. reels self-locking in an emergency responsive only to vehicle movement with adjustable sensor
    • B60R2022/402—Belt retractors, e.g. reels self-locking in an emergency responsive only to vehicle movement with adjustable sensor automatically adjustable to keep a vertical position, e.g. irrespective of seat or vehicle tilting

Definitions

  • the present disclosure relates generally to seat belt arrangements for vehicles, and more particularly, to a retractor drive mechanism for a retractor of a seat belt arrangement for a vehicle.
  • Seat belt devices are devices that protect occupants from injuries caused by inertial effects during emergency braking and collisions.
  • the seat belt device restrains the occupant through a belt-shaped webbing, the webbing is stored and retracted by a retractor, and is fixed to the vehicle body by a lock tongue.
  • Seat belt device is one of the most important components in vehicle passive safety system.
  • the seat back has evolved from a fixed type to an adjustable type, and the adjustable inclination angle has become larger and larger.
  • the retractor is usually installed in the seat back and also protects the occupant at all times during rearward adjustment of the seat back.
  • the vehicle sensing device is a mechanical sensor in the retractor, which senses the acceleration and inclination of the vehicle, and activates the webbing lock when the vehicle is in an emergency.
  • the traditional car feeling device is a fixed inclination angle car feeling device designed with the installation position of the body, which cannot meet the technical requirements of the adjustable seat back inclination angle. Therefore, an adaptive retractor is developed in which the inclination of the car-sensing device is adjusted synchronously with the seat back, wherein the car-sensing device is adjusted together with the seat back by its own gravity.
  • the self-adaptive retractor has a small adjustable range and low vehicle sense sensitivity, and cannot meet the increasingly high requirements for adjusting the inclination of the backrest.
  • the seat-integrated wire-controlled seat belt device provides a better solution for the adjustment of the large inclination angle of the seat back.
  • the wire-controlled angle adjustment retractor of the seat belt device is installed on the seat back, the angle adjustment plate assembly is installed between the seat back and the seat, and is linked with the seat angle adjuster, and the retractor is connected with the angle adjustment
  • the disc assemblies are connected by core wire assemblies.
  • the reclining plate assembly rotates synchronously with the seat back, pulls out or recovers the core wire, and drives the car-sensing device in the retractor to rotate synchronously, so as to realize the synchronous adjustment of the car-sensing device and the seat back inclination.
  • the wire-controlled angle-adjusting retractor has a significant improvement in vehicle sensitivity and angle adjustment range.
  • the car-sensing device of the wire-controlled angle-adjusting retractor will change its position along with the inclination adjustment of the seat, so the initial position of the car-sensing device is particularly important. It is necessary to design a set of retractor transmission mechanism to link the car feel device with the angle adjustment plate assembly to ensure that the initial position of the car feel device is always kept constant.
  • the existing wire-controlled angle-adjusting retractor usually adopts a two-stage gear transmission mechanism.
  • the secondary gear transmission mechanism is provided with angle-adjusting pulleys and transmission pulleys of different sizes. Both ends of the core wire are respectively fixed on the angle-adjusting pulleys and the transmission pulleys, and the core wire forms a reverse pulley transmission with the angle-adjusting pulleys and the transmission pulleys. Since the winding diameter of the chamfer pulley is larger than that of the drive pulley, an additional pinion is provided to correct the transmission ratio between the chamfer pulley and the drive pulley. The extra pinion not only increases the number of parts and improves the accuracy of the parts, but also increases the transmission path and reduces the transmission accuracy.
  • One of the objects of the present disclosure is to provide a retractor drive mechanism that overcomes at least one of the deficiencies in the prior art.
  • a first aspect of the present disclosure relates to a retractor transmission mechanism for a retractor of a seat belt device of a vehicle, wherein the seat of the vehicle includes a seat portion, and a tilt angle capable of adjusting a tilt angle with respect to the seat portion about a rotation axis A backrest, the retractor is mounted on the backrest and includes a vehicle feel device, and the retractor transmission mechanism includes:
  • the angle adjustment wheel assembly includes an angle adjustment shell and an angle adjustment pulley arranged in the angle adjustment shell, the angle adjustment shell is configured to be connected with the rotating shaft of the backrest, and the angle adjustment pulley can be independent of the adjustment angle.
  • the corner shell rotates and has an arc-shaped winding slot;
  • the transmission case assembly includes a transmission housing and a transmission pulley arranged in the transmission housing, the transmission housing is mounted to the retractor, the transmission pulley can rotate independently of the transmission housing, and has an arc-shaped winding
  • the wire groove, the wire groove of the transmission pulley and the wire groove of the angle pulley have approximately the same radius;
  • the core wire, the first end portion and the opposite second end portion of the core wire are respectively fixed to the angle pulley and the transmission pulley, and the core wire can be wound on the winding groove of the angle pulley and the winding of the transmission pulley. on the wire slot.
  • the angle pulley and the drive pulley are disposed on the same side of the extending core wire, and the angle pulley and drive pulley form a co-directional pulley drive.
  • the wire winding groove of the drive pulley is provided on a portion or all of the peripheral outer surface of the drive pulley.
  • the drive pulley is configured to maintain a rotational direction of the vehicle feel device during reclining of the backrest relative to the seat.
  • the drive pulley is provided with a push rod extending outwardly from a radially outer surface thereof, the push rod being configured to push the vehicle feel device to rotate in the front-rear direction of the vehicle.
  • the vehicle sensing device includes a sensitive seat with an inertial body supporting surface, and a sensitive ball supported on the inertial body supporting surface, wherein the sensitive seat is provided with two downwardly extending arms at its bottom , and the push rod is inserted between the two arms.
  • the push rod has a spherical or elliptical head, and the head is inserted between the two arms.
  • the transmission pulley is provided with a core wire fixing portion for fixing the end of the core wire.
  • a second aspect of the present disclosure relates to a seat belt device for a vehicle, wherein the seat belt device includes a retractor and the above-described retractor transmission mechanism for the retractor.
  • FIG. 1 shows a schematic diagram of the layout of a retractor on a vehicle seat including a retractor drive mechanism according to the present disclosure
  • FIG. 2 shows an assembled side view of a retractor including a retractor drive mechanism according to the present disclosure
  • FIG. 3 shows an exploded perspective view of a retractor including a retractor drive mechanism according to the present disclosure
  • FIG. 4 shows an exploded perspective view of a retractor drive mechanism according to the present disclosure
  • FIG. 5A and 5B illustrate assembled perspective and cross-sectional views of a retractor drive mechanism according to the present disclosure
  • FIGS. 6A and 6B illustrate a cross-sectional view and a partially enlarged perspective view of a transmission case assembly of a retractor transmission according to the present disclosure
  • FIG. 7 shows a cross-sectional view of a cam plate assembly of a retractor drive mechanism in accordance with the present disclosure.
  • an element when an element is referred to as being “on”, “attached” to, “connected” to, “coupled” to, or “contacting” another element, etc.
  • the element may be directly on, attached to, connected to, coupled to, or in contact with another element, or intervening elements may be present.
  • an element is referred to as being “directly on” another element, “directly attached” to another element, “directly connected” to another element, “directly coupled” to another element or, or “directly coupled” to another element.
  • directly contacting” another element there will be no intervening elements.
  • a feature is arranged “adjacent" to another feature, which can mean that one feature has a portion that overlaps an adjacent feature or a portion that is above or below an adjacent feature.
  • spatially relative terms such as “up,” “down,” “left,” “right,” “front,” “rear,” “high,” “low,” etc. may describe one feature versus another relationship in the attached drawing. It should be understood that spatially relative terms encompass different orientations of the device in use or operation in addition to the orientation shown in the figures. For example, when the device in the figures is turned over, features previously described as “below” other features may now be described as “above” the other features. The device may also be otherwise oriented (rotated 90 degrees or at other orientations) in which case the relative spatial relationships will be interpreted accordingly.
  • FIG. 1 schematically shows a side view of a vehicle seat with a seat belt arrangement.
  • the vehicle may be a passenger car or a truck, in particular a partially or fully autonomous motor vehicle.
  • the vehicle seat has a seat portion 5 and a backrest 4 .
  • the backrest 4 can be adjusted forward and backward relative to the seat 5 about its axis of rotation from a substantially upright predetermined initial position (depicted with solid lines in FIG. 1 ).
  • the predetermined initial position is optimized for the seating of the occupant.
  • the backrest 4 can be reclined forward on the seat 5 in order to make room.
  • the backrest 4 can be adjusted rearwardly to a near-horizontal maximum reclining position in which the occupant can rest.
  • the maximum inclination position may correspond to an inclination angle of approximately 180°, for example, an inclination angle of approximately 170°, with reference to the heading direction of the vehicle.
  • the backrest 4 can be adjusted to any intermediate position between the initial position and the maximum inclination angle position according to the needs of the occupant, for example, it can be adjusted to an inclination angle of about 120° or 135°.
  • the two end positions of the backrest 5 are depicted by dashed lines in FIG. 1 .
  • the vehicle seat is equipped with a seat belt device to protect the occupant from inertial injury in the event of a vehicle emergency.
  • the seat belt device includes a retractor 1 .
  • the retractor 1 is provided on the backrest 4 and is used for winding and storing the webbing.
  • the retractor 1 includes a retractor frame 17 and a reel 33 .
  • the retractor frame 17 is U-shaped and includes a bottom wall and two side walls.
  • the retractor frame 17 is fixed to the backrest 4 by the bottom wall, and the reel 33 is rotatably supported by the cooperation of the two side walls and the two reel covers 18 , 22 .
  • the reel 33 has a cylindrical shape and is used for winding the webbing.
  • a retractor spring is provided between one end of the reel 33 and the reel cover 22 .
  • the retractor spring preloads the reel 33 in the retracting direction to apply a return torque force to the reel 33 to return to its original position.
  • the other end of the reel 33 is fixed to the ratchet 21 so that the reel 33 and the ratchet 21 can rotate together in synchronization.
  • the vehicle sensing device 10 stops the ratchet 21 and thereby stops the reel 33 so that the reel 33 stops winding the webbing and restrains the occupant.
  • the ratchet wheel 21 may be housed in the reel cover 18 , which in turn is housed in the retractor outer cover 23 .
  • the spool covers 18 , 22 and the retractor outer cover 23 may be collectively secured to the retractor frame 17 .
  • the vehicle sensing device 10 is used to detect the acceleration of the vehicle in an emergency situation.
  • the vehicle sensing device 10 includes a sensitive seat 14 , a sensitive ball 25 , a sensitive pawl 15 , and a locking pawl 8 .
  • the sensitive seat 14 has a substantially bowl shape.
  • the sensitive seat 14 is provided with two pivot shafts extending outward in opposite directions on the outer surface of the bowl body, so that the sensitive seat 14 can be pivotally mounted on the transmission box assembly 9 of the retractor transmission mechanism (which will be described in detail below). )superior.
  • the bottom of the sensitive seat 14 in the bowl includes an inertial body support surface.
  • the inertial body support surface as the reference surface of the vehicle sensing device 10, needs to be kept at a substantially horizontal position at all times.
  • the sensitive ball 25 is seated in the bowl of the sensitive seat 14 and is supported on the inertial body support surface in its initial position.
  • the sensitive pawl 15 is pivotally mounted on the sensitive seat 14 and covers the top of the sensitive ball 25 .
  • the locking pawl 8 is mounted on the retractor frame 17 of the retractor 1 (eg on the side walls) and is located between the sensitive pawl 15 and the ratchet wheel 21 of the retractor 1 .
  • the upward pivoting of the sensitive pawl 15 pushes the locking pawl 8 upward and against the ratchet wheel 21 of the retractor 1 .
  • the ratchet 21 and the reel 33 stop rotating, so that the retractor 1 stops winding the webbing and restraining the occupant.
  • a retractor 1 with a car feel device 10 is installed in the backrest 4 .
  • the vehicle feel device 10 In the initial position of the backrest 4, the vehicle feel device 10 is in a substantially vertical orientation and the inertial body support surface is in a substantially horizontal position.
  • the retractor transmission mechanism In order to keep the car feel device 10 always working normally during the adjustment of the inclination of the backrest 4, the retractor transmission mechanism is configured to automatically adjust the positioning inclination of the car feel device 10, ideally so that the car feel device 10 is kept substantially upright. Orientation.
  • the retractor drive can only partially compensate for inclination deviations of the vehicle feel device 10 from the vertical which are caused by the adjustment of the inclination of the backrest 4 .
  • the retractor transmission mechanism can compensate only half of the 20° inclination deviation of the vehicle sensing device 10 , so that the vehicle sensing device 10 still has a 10° inclination deviation. This still improves the feel of the vehicle when compared to the case where the feel device 10 is fixedly mounted relative to the backrest 4 and thus there is an inclination deviation of 20°.
  • the retractor transmission mechanism includes a transmission box assembly 9 and an angled disc assembly 3 connected through the core wire assembly 2 .
  • the angle adjustment plate assembly 3 is coaxially disposed with the rotation axis of the backrest 4 , and rotates with the rotation of the backrest 4 .
  • the core wire assembly 2 connects the cam plate assembly 3 and the gear box assembly 9 , so as to transmit the rotation angle of the cam plate assembly 3 to the gear box assembly 9 .
  • the transmission box assembly 9 is located between the core wire assembly 2 and the vehicle feeling device 10 , and transmits the rotation angle of the cam wheel assembly 3 to the vehicle feeling device 10 to adjust the positioning inclination of the vehicle feeling device 10 .
  • the core wire assembly 2 includes an elongated hollow sleeve 27 and a core wire 28 passing through the interior of the sleeve 27 .
  • the sleeve 27 wraps the core wire 28 and defines the movement path of the core wire 28 .
  • the first end 26b and the opposite second end 26a of the sleeve 27 are fixed to the housing of the cam plate assembly 3 and the housing of the gearbox assembly 9, respectively.
  • the core wire 28 is free to move within the sleeve 27 independently of the sleeve 27, and the first end 29 and the opposite second end 30 are respectively fixed to the cam pulley 31 and the gear box assembly in the housing of the cam disc assembly 3 9.
  • the transmission pulley 19 in the housing converts the rotation of the cam plate assembly 3 into the rotation of the transmission box assembly 9.
  • the core wire assembly 2 may include only the core wire 28 without the hollow sleeve 27 .
  • the angle adjustment plate assembly 3 is used to transmit the rotation angle of the backrest 4 to the core wire assembly 2 .
  • the angle adjustment disc assembly 3 includes an angle adjustment pulley 31 , an angle adjustment wrench 12 , a wrench slider 7 , and a housing.
  • the housing accommodates internal components such as the angle pulley 31 and the angle adjustment wrench 12 therein, and the angle adjustment pulley 31 and the angle adjustment wrench 12 can be rotated independently of the case.
  • the shell is assembled from two half-shells 13, 11, and the half-shell 11 is mounted on the backrest 4 of the vehicle seat by means of fasteners (eg screws, etc.).
  • the housing is configured to be in driving connection with the rotating shaft of the backrest 4 .
  • the housing can be configured to be fixed coaxially with the axis of rotation of the backrest 4 . Therefore, when the backrest 4 is rotated about its rotation axis to adjust the inclination angle, the shell rotates synchronously with the backrest 4 .
  • the housing can be rotated in a first rotation direction D1 and in a second rotation direction D2 opposite to the first rotation direction, wherein the first rotation direction D1 corresponds to the backward adjustment direction of the inclination angle of the backrest 4, and the second rotation direction D2 corresponds to Adjust the direction forward at the inclination angle of the backrest 4.
  • first rotation direction D1 corresponds to the backward adjustment direction of the inclination angle of the backrest 4
  • second rotation direction D2 corresponds to Adjust the direction forward at the inclination angle of the backrest 4.
  • the portion of the cam plate assembly 3 at the front along the first rotational direction D1 is called the front portion
  • the portion at the rear along the first rotational direction D1 is called the rear portion.
  • the housing includes a substantially cylindrical accommodating portion 13-1, and a core wire inlet and outlet portion 13-2 protruding tangentially from an edge of the accommodating portion 13-1.
  • the inner cavity of the accommodating portion 13-1 includes a long-diameter portion 13-3 with a larger radius and a short-diameter portion 13-4 with a smaller radius to receive the angle-adjusting pulley 31 and the rotating portion 12-1 of the angle-adjusting wrench 12.
  • the long-diameter portion 13-3 and the short-diameter portion 13-4 are circumferentially adjacent to each other.
  • the short-diameter portion 13-4 includes a front end portion 13-5 and a rear end portion 13-6 along the first rotational direction D1.
  • the center of the inner cavity of the accommodating part 13-1 may have a mounting shaft on which the angle-adjusting pulley 31 and the swivel part 12-1 of the angle-adjusting wrench 12 are rotatably installed.
  • the core wire inlet and outlet portion 13-2 adjoins the short diameter portion 13-4 in the radial direction of the accommodating portion 13-1, and includes two continuous through holes.
  • a through hole with a larger diameter is located radially outside, and is used for fixing the first end portion 26 b of the sleeve 27 of the core wire assembly 2 .
  • a through hole with a smaller diameter is located radially inside, and the core wire 28 of the core wire assembly 2 passes therethrough.
  • the core wire 28 of the core wire assembly 2 passes through the through hole with a smaller diameter, and is wound and fixed on the angle adjusting pulley 31, which will be described in detail below.
  • the wrench slider 7 is fixedly mounted to the seat portion 5 of the vehicle seat.
  • the angle adjustment wrench 12 includes a sliding part 12-2 and a swivel part 12-1 which are connected to each other.
  • the sliding part 12-2 is slidably assembled on the wrench slider 7, whereby the combination of the angle adjustment wrench 12 and the wrench slider 7 can be adapted to different vehicle seats, and can compensate for component errors and adjust the backrest 4 Variation in part position when tilted.
  • the swivel portion 12-1 is arranged around the mounting axis of the receiving portion 13-1, and is provided with a stopper 12-3 protruding outward from the surface thereof to limit or allow the reclining pulley 31 during the reclining adjustment of the backrest 4 rotate.
  • the angle-adjusting pulley 31 is substantially annular.
  • the angle-adjusting pulley 31 includes a long-diameter portion 31-1 having a relatively large radius and a short-diameter portion 31-2 having a relatively small radius, and the long-diameter portion 31-1 and the short-diameter portion 31-2 are circumferentially adjacent to each other.
  • the long-diameter portion 31-1 includes a front end portion 31-3 and a rear end portion 31-4 along the first rotational direction D1.
  • the long-diameter portion 31-1 is provided with an arc-shaped opening 31-5 at a portion close to the rear end portion 31-4.
  • the arc-shaped opening 31 - 5 extends circumferentially on all or part of the long diameter portion 31 - 1 , and is concentric with the angle adjusting pulley 31 .
  • the stopper 12 - 3 of the angle adjustment wrench 12 is received in the arcuate opening 31 - 5 of the angle adjustment pulley 31 .
  • the stopper 12-3 is located between the front end portion 31-8 and the rear end portion 31-9 of the arc-shaped opening 31-5, the angle adjustment pulley 31 can rotate;
  • the end of the opening 31-5 the angle adjustment pulley 31 cannot rotate.
  • the long-diameter portion 31-1 is provided with a core wire fixing portion 31-6 at a portion close to the front end portion 31-3.
  • the core wire fixing portion 31-6 is adjacent to the short diameter portion 31-2, and is used to fix the first end portion 29 of the core wire 28 of the core wire assembly 2, and the second end portion 30 of the core wire 28 is fixed to the transmission case assembly 9.
  • the short-diameter portion 31-2 is provided with a winding groove 31-7 in which the core wire 28 is wound on a part or all of its peripheral outer surface.
  • the wire winding slot 31 - 7 is substantially arc-shaped, and may be concentric with the angle adjusting pulley 31 .
  • the wire winding groove 31-7 is drawn out from the core wire fixing portion 31-6 and extends circumferentially along the circumference of the short diameter portion 31-2 to receive the core wire 28 from the core wire fixing portion 31-6 and define the core wire 28 movement path.
  • the depth and width of the wire winding groove 31-7 are preferably not smaller than the diameter of the core wire 28.
  • the transmission box assembly 9 is used to convert the movement of the core wire 28 of the core wire assembly 2 into a rotation angle and transmit it to the vehicle sensing device 10 .
  • Transmission box assembly 9 includes transmission pulley 19 and housings 20 , 16 .
  • the housings 20 , 16 house internal components such as the drive pulley 19 therein, and the drive pulley 19 is capable of rotating independently of the housings 20 , 16 .
  • the transmission pulley 19 is substantially hat-shaped, and includes an annular base plate and a hollow convex portion extending outward from a central hole of the annular base plate, and the hollow convex portion is a cylindrical body with a bottom plate.
  • the annular substrate is provided with a core wire fixing portion 19 - 1 for fixing the second end portion 30 of the core wire 28 of the core wire assembly 2 .
  • the core wire fixing portion 19-1 may be disposed at the middle or outer position of the annular substrate in the radial direction.
  • the annular substrate is provided with a winding groove 19 - 2 in which the core wire 28 is wound on a part or all of its peripheral edge.
  • the wire winding groove 19 - 2 is substantially arc-shaped, and may be concentric with the transmission pulley 19 .
  • the wire winding groove 19-2 is drawn out from the core wire fixing part 19-1 and extends circumferentially along the circumference of the annular substrate to receive the core wire 28 from the core wire fixing part 19-1 and define the movement path of the core wire 28.
  • the depth and width of the wire winding groove 19 - 2 are preferably not smaller than the diameter of the core wire 28 .
  • the radius of the winding groove 19-2 of the transmission pulley 19 is approximately the same as that of the winding groove 31-7 of the angle adjustment pulley 31, so there is no need to add an extra pinion to correct the distance between the angle adjustment pulley 31 and the transmission pulley 19 during the transmission process.
  • the angle pulley 31 and the transmission pulley 19 are arranged on the same side of the extending core wire 28, so that the angle pulley 31 and the transmission pulley 19 form a co-directional pulley transmission.
  • the rotation directions of the angle adjustment pulley 31 and the transmission pulley 19 are kept in the same direction.
  • the annular base plate of the transmission pulley 19 is also provided with a push rod 19-3 extending perpendicular to its outer surface, and the sensitive seat 14 is provided with two parallel extending arms 14-1 extending downward at the bottom of the bowl body.
  • the push rod 19-3 is inserted between the two extending arms 14-1, and can rotate the sensitive seat 14 in the front-rear direction of the vehicle to ensure that the inertial body support surface in the sensitive seat 14 is always kept in a substantially horizontal position.
  • the push rod 19-3 has a spherical or elliptical head, and the head is inserted between the two extending arms 14-1 to drive the sensitive seat 14 to rotate.
  • the hollow projection of the drive pulley 19 is used to receive the drive pulley spring 24 .
  • the drive pulley spring 24 provides back torsion to the drive pulley 19 to bias the drive pulley 19 circumferentially to its initial rotational position.
  • the housing includes two half-shells 20 and 16 .
  • the two half-shells 20 and 16 are fitted together by a snap fit, and the half-shells 16 are secured to the retractor 1 (eg on the retractor cover 23 ) by fasteners (eg screws or the like).
  • the half-shell 20 includes a substantially cylindrical accommodating portion 20-1, and a core wire inlet and outlet portion 20-2 protruding tangentially from an edge of the accommodating portion 20-1.
  • the core wire entry and exit portion 20-2 is substantially elongated and includes two through grooves inside. The two through grooves are continuous with each other and open above.
  • a through groove with a larger diameter is located radially outside, and is used for fixing the second end portion 26 a of the sleeve 27 of the core wire assembly 2 .
  • the through-groove with a smaller diameter is located on the radially inner side, and the core wire 28 of the core wire assembly 2 passes therethrough.
  • the core wire 28 of the core wire assembly 2 passes through the through groove, is wound on the wire winding groove 19-2 of the transmission pulley 19, and is finally fixed to the core wire fixing portion 19-1 of the transmission pulley 19.
  • the accommodating portion 20-1 includes an annular base plate, a hollow convex portion protruding from a central hole of the annular base plate, and a flange portion protruding from a peripheral edge of the annular base plate in a direction opposite to the hollow convex portion.
  • the hollow convex portion of the half-shell 20 is a cylindrical body with a bottom plate, and the shape is approximately matched and slightly larger than the shape of the hollow convex portion of the transmission pulley 19 to accommodate the hollow convex portion of the transmission pulley 19 .
  • the hollow convex portion of the accommodating portion 20-1 has a protruding center column on its bottom plate, and the hollow convex portion of the transmission pulley 19 has a center hole on its bottom plate for the center column to pass through, so that the transmission pulley 19 can wrap around the center column Rotation relative to the half-shell 20 .
  • the half-shell 16 includes a base plate, and a feel frame 16-1 fixed to the base plate.
  • the outer contour shape of the substrate roughly corresponds to the combined outer contour shape of the accommodating portion 20-1 and the core wire in-out portion 20-2.
  • the second end 26a of the sleeve 27 of the core wire assembly 2 is put into the core wire entry and exit part 20-2 of the half shell 20, and the transmission pulley 19 and the transmission pulley spring 24 are put into the accommodating part 20-2 of the half shell 20.
  • the base plate can cover the accommodating part 20-1 and the core wire entry and exit part 20-2, so that the half shells 16 and 20 connect the second end 26a of the sleeve 27 of the core wire assembly 2, the transmission pulley 19 and the transmission pulley spring 24 is enclosed within it.
  • the base plate is provided with an opening 16-2 for the push rod 19-3 of the transmission pulley 19 to extend and rotate back and forth.
  • the half-shell 16 is provided with a spring fixing portion on its inner surface, and the bottom plate of the hollow convex portion of the transmission pulley 19 is also provided with a spring fixing portion.
  • the transmission pulley spring 24 may be a coil spring, and the leg at one end thereof is fixed to the spring fixing portion of the transmission pulley 19 , and the leg at the other end is fixed to the spring fixing portion of the half-shell 16 .
  • the vehicle feel frame 16 - 1 is used to pivotably support the sensitive seat 14 of the vehicle feel device 10 .
  • the vehicle feel frame 16-1 includes a support rod extending parallel to the base plate, and two support legs supporting both ends of the support rod at a certain distance from the base plate.
  • the support rod and the opposite base plate are provided with corresponding pivot holes for receiving the pivot shaft of the sensitive seat 14 , so that the sensitive seat 14 can be relative to the half shell under the action of the push rod 19 - 3 of the transmission pulley 19 16 and the entire gearbox assembly 9 pivots.
  • the vehicle feel frame 16-1 may be integrally formed with the base plate of the half-shell 16, or may be separately formed and connected together by connecting pieces.
  • FIG. 7 is a schematic diagram of the angle adjustment disc assembly 3 in this working state.
  • the housings 13 , 11 of the reclining plate assembly 3 rotate in the first rotational direction D1 following the backrest 4 , and the core wire 28 is wound around a section of the wire winding groove 31 - 7 .
  • the housings 13 and 11 can continue to rotate along the first rotation direction D1 from the position shown in FIG. 7 , in other words, the backrest 4 of the vehicle seat can continue to adjust the inclination angle toward the rear, and at the same time, the core wire 28 can continue to be wound. Winding on slot 31-7.
  • the above-mentioned movement process can also be described as follows with reference to the backrest 4 of the vehicle seat according to the movement relativity.
  • the housings 13 , 11 of the reclining plate assembly 3 fixed to the backrest 4 are fixed and 5.
  • the fixed angle adjustment wrench 12 rotates in the second rotation direction D2. Since the block 12-3 of the angle adjustment wrench 12 is blocked against the rear end 31-9 of the arc opening 31-5 of the angle adjustment pulley 31, The angle adjustment wrench 12 drives the angle adjustment pulley 31 to rotate together along the second rotation direction D2, so that the core wire 28 is wound onto the wire winding groove 31-7.
  • the angle-adjusting pulley 31 and the transmission pulley 19 are arranged on the same side of the core wire 28, so that the angle-adjusting pulley 31 and the transmission pulley 19 constitute a co-directional pulley transmission.
  • the core wire 28 is unwound from the winding groove 19-2 of the transmission pulley 19, and the transmission pulley 19 rotates in the second rotation direction D2.
  • the transmission pulley 19 uses the push rod 19-3 to push the sensitive seat 14 of the vehicle sensing device 10, so that the sensitive seat 14 rotates along the second rotation direction D2.
  • the backrest 4 is rotated by a certain angle relative to the fixed seat 5 along the first rotation direction D1, while the sensitive seat 14 mounted on the backrest 4 is rotated by a certain angle relative to the backrest 4 in the opposite second rotation direction D2, so that the vehicle is rotated by a certain angle.
  • Sensor device 10 remains in a generally vertical orientation.
  • the backrest 4 of the vehicle seat returns to the upright initial position along the second rotational direction D2 from the rearwardly inclined position as shown in FIG. D2 is rotated upward until the rear end portion 13 - 6 of the short diameter portion 13 - 4 of the housings 13 and 11 substantially contacts the front end portion 31 - 3 of the long diameter portion 31 - 1 of the angle pulley 31 .
  • the angle-adjusting pulley 31 keeps pressing against the stopper 12-3 with the rear end 31-9 of the arc-shaped opening 31-5 under the condition that the core wire 28 is preloaded, and the core wire 28 passes from the winding groove 31-7. Unwind.
  • the above-mentioned movement process can also be described as follows with reference to the backrest 4 of the vehicle seat according to the movement relativity.
  • the housings 13, 11 of the reclining plate assembly 3 fixed to the backrest 4 are fixed,
  • the angle adjustment wrench 12 fixed to the seat 5 rotates in the first rotation direction D1.
  • the angle adjusting pulley 31 rotates along the first rotation direction D1 along with the block 12-3, so that the core wire 28 is unwound from the wire winding slot 31-7.
  • the core wire 28 is wound onto the wire winding groove 19-2 of the transmission pulley 19, and the transmission pulley 19 rotates along the first rotation direction D1.
  • the transmission pulley 19 pushes the sensitive seat 14 of the vehicle sensing device 10 by means of the push rod 19-3, so that the sensitive seat 14 rotates along the first rotation direction D1.
  • the backrest 4 rotates at a certain angle relative to the fixed seat 5 along the second rotational direction D2, while the sensitive seat 14 mounted on the backrest 4 rotates at a certain angle along the opposite first rotational direction D1 relative to the backrest 4, thereby turning the vehicle.
  • Sensor device 10 remains in a generally vertical orientation.
  • the housings 13 , 11 of the reclining plate assembly 3 fixed to the backrest 4 are rotated in the second rotational direction D2 .
  • the rear end portion 13-6 of the short-diameter portion 13-4 of the housing just contacts the front end portion 31-3 of the long-diameter portion 31-1 of the angle-adjusting pulley 31, and the casings 13 and 11 drive the angle-adjusting pulley 31 Exercise together.
  • the presence of the arcuate opening 31-5 allows the angle pulley 31 to move together with the housings 13, 11, and they can move together until the front end 31-8 of the arcuate opening 31-5 abuts the stop 12-3.
  • the co-movement of the angle adjusting pulley 31 and the housings 13 and 11 can correspond to the forward tilting process of the backrest 4 of the vehicle seat. needs.
  • the core wire 28 does not have a winding operation on the winding groove 31 - 7 , so that the transmission pulley 19 and the vehicle feeling device 10 do not rotate relative to the seat back 12 .
  • the housings 13 , 11 of the cam plate assembly 3 mounted to the backrest 4 are in the first rotational direction D1
  • the adjusting pulley 31 is pulled by the preloaded core wire 28 and thus rotates together with the housings 13, 11 in the first rotational direction D1 until the rear end 31-9 of the arc-shaped opening 31-5 reaches the stop 12-3 and thus the angle-adjusting pulley 31 is immobilized by the angle-adjusting wrench 12 and the wrench slider 7.
  • the movement of the cam pulley 31 together with the housing may correspond to the process of the backrest 4 of the vehicle seat being folded forward and returning to the upright initial position. Tilt adjustment is not required.
  • the core wire 28 does not have a winding operation on the winding groove 31 - 7 , so that the transmission pulley 19 and the vehicle feeling device 10 do not rotate relative to the seat back 12 .
  • the two-stage gear transmission mechanism of the existing recoil-by-wire retractor requires the use of a pinion to correct the transmission ratio between the cam pulley and the transmission pulley.
  • the core wire forms a reverse pulley transmission with the angle-adjusting pulley and the transmission pulley.
  • the rotation of the angle-adjusting pulley directly drives the winding of the core wire, the movement of the core wire drives the rotation of the transmission pulley, the rotation of the transmission pulley drives the pinion to rotate, the pinion corrects the transmission ratio, and the pinion rotates in the opposite direction to the transmission pulley, and the pinion transmits the rotation to the car sensor device.
  • the rotation direction of the transmission pulley is opposite to the rotation direction of the car feel device.
  • the wire-controlled angle-adjusting retractor adopts a direct-drive transmission mechanism and omits the pinion.
  • the core wire forms a positive pulley transmission with the angle-adjusting pulley and the transmission pulley.
  • the cam pulley has the same winding diameter as the drive pulley, as there is no need to provide a pinion to correct the transmission ratio.
  • the rotation of the angle-adjusting pulley drives the movement of the core wire, and the movement of the core wire drives the rotation of the transmission pulley. Consistent rotation.
  • the retractor transmission mechanism according to the present disclosure does not need a pinion to correct the transmission ratio, the number of parts is small, the precision requirements of the parts are reduced, the transmission is simple, the transmission precision is high, and the applicability of the product is improved.
  • the cam plate assembly and gear box assembly according to the present disclosure are small in size, which is convenient for customers to install.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Seats For Vehicles (AREA)

Abstract

本公开涉及一种用于车辆安全带装置的卷收器的卷收器传动机构，包括：调角轮组件，所述调角轮组件包括调角壳体和设置在调角壳体内的调角滑轮，调角壳体构造成与和靠背的转动轴传动连接，调角滑轮能够独立于调角壳体进行旋转、并且具有圆弧形的绕线槽；传动箱组件，所述传动箱组件包括传动壳体和设置在传动壳体内的传动滑轮，传动壳体安装至卷收器，传动滑轮能够独立于传动壳体进行旋转、并且具有圆弧形的绕线槽，传动滑轮的绕线槽和调角滑轮的绕线槽半径大致相同。根据本公开的线控调角卷收器采用直接传动的传动机构，省略掉了小齿轮。

Description

卷收器传动机构 技术领域
本公开总体上涉及车辆的安全带装置，更具体来说，本公开涉及一种用于车辆安全带装置的卷收器的卷收器传动机构。
背景技术
安全带装置是保护乘员在车辆紧急刹车和碰撞时免受惯性作用而受伤的装置。安全带装置通过带状织带来束缚住乘员，织带通过卷收器进行收纳和卷收、并通过锁舌固定于车体。安全带装置是车辆被动安全系统中最为重要的组成部分之一。
随着车辆保有量的不断增加，乘员对车辆舒适性、特别是座椅舒适性的要求越来越高。座椅靠背从固定式演变为可调式，并且可调节倾角越来越大，例如商务车已经实现了接近平躺的可调节倾角。为了取得最佳的安全性和舒适性，卷收器通常安装在座椅靠背中，并且在座椅靠背向后调节过程中也能时刻保护乘员安全。车感装置是卷收器中的机械传感器，用于感知车辆的加速度和倾斜倾角，并且在车辆发生紧急状态时启动织带锁止。
传统的车感装置是随车身安装位置设计的固定倾角车感装置，不能满足座椅靠背倾角可调的技术要求。因此，开发出车感装置的倾角随座椅靠背同步调节的自适应卷收器，其中的车感装置靠自身重力与座椅靠背一起调节。但是，自适应卷收器的可调节范围小、车感灵敏度低，不能满足越来越高的靠背调节倾角要求。
座椅集成线控安全带装置为解决座椅靠背大倾角可调提供了较好的解决方案。该安全带装置的线控调角卷收器安装在座椅靠背上，调角盘组件安装在座椅靠背与座部之间、并与座椅调角器联动，并且卷收器与调角盘组件之间通过芯线组件连接起来。当调节座椅调角器时，调角盘组件与座椅靠背同步旋转，拉出或回收芯线，带动卷收器中的车感装置同步旋转，从而实现车感装置与座椅靠背同步调节倾角。线控调角卷收器在车感灵敏度和调角范围上比自适应卷收器有了明显提升。线控调角卷收器的车感装置会随着座椅的倾角调节一起改变位置，因此车感装置的初始位置尤为重要。需要设计一套卷收器传动机构使车感装置与调角盘组件连动，以保证车感装置的初始位置始终保持一定。
现有的线控调角卷收器通常采用二级齿轮传动机构。二级齿轮传动机构具备大 小不同的调角滑轮与传动滑轮，芯线的两端分别固定在调角滑轮与传动滑轮上，并且芯线与调角滑轮和传动滑轮形成反向滑轮传动。由于调角滑轮的绕线直径大于传动滑轮的绕线直径，因此提供额外的小齿轮来修正调角滑轮和传动滑轮之间的传动比。额外的小齿轮不仅增加了零件数量、提高了对零件精度的要求，而且使传动路径增长，传动精度降低。
发明内容
本公开的目的之一是提供一种能够克服现有技术中至少一个缺陷的卷收器传动机构。
本公开的第一方面涉及一种用于车辆安全带装置的卷收器的卷收器传动机构，其中，所述车辆的座椅包括座部、以及能够相对于座部绕转动轴调节倾角的靠背，所述卷收器被安装在靠背上并且包括车感装置，所述卷收器传动机构包括：
调角轮组件，所述调角轮组件包括调角壳体和设置在调角壳体内的调角滑轮，调角壳体构造成与和靠背的转动轴传动连接，调角滑轮能够独立于调角壳体进行旋转、并且具有圆弧形的绕线槽；
传动箱组件，所述传动箱组件包括传动壳体和设置在传动壳体内的传动滑轮，传动壳体安装至卷收器，传动滑轮能够独立于传动壳体进行旋转、并且具有圆弧形的绕线槽，传动滑轮的绕线槽和调角滑轮的绕线槽半径大致相同；和
芯线，所述芯线的第一端部和相对的第二端部分别被固定至调角滑轮和传动滑轮，并且芯线能够被卷绕在调角滑轮的绕线槽和传动滑轮的绕线槽上。
在一些实施例中，调角滑轮和传动滑轮被设置在延伸的芯线的同一侧，并且调角滑轮和传动滑轮形成同向滑轮传动。
在一些实施例中，传动滑轮的绕线槽设置在传动滑轮的周缘外表面的一部分或全部上。
在一些实施例中，传动滑轮被构造成在靠背相对于座部调节倾角的过程中与车感装置保持旋向一致。
在一些实施例中，传动滑轮设有从其径向外表面向外伸出的推动杆，所述推动杆构造成推动车感装置沿车辆的前后方向转动。
在一些实施例中，车感装置包括具有惯性体支撑面的敏感座、以及被支撑在惯性体支撑面上的敏感球，其中，敏感座在其底部设有向下伸出的两个臂部，并且推动杆 被插在两个臂部之间。
在一些实施例中，推动杆具有球形或椭圆形的头部，并且所述头部插入两个臂部之间。
在一些实施例中，传动滑轮设有芯线固定部，以用于固定芯线的端部。
本公开的第二方面涉及一种用于车辆的安全带装置，其中，所述安全带装置包括卷收器和用于所述卷收器的上述卷收器传动机构。
本公开的主题技术的其它特征和优点将在下面的描述中阐述，并且部分地将从所述描述显而易见，或者可以通过实践本公开的主题技术来学习。通过在书面说明书及其权利要求书以及附图中特别指出的结构，将实现和获得本公开的主题技术的优点。
应当理解，前述一般性描述和以下详细描述都是示例性和说明性的，并且旨在提供对要求保护的本公开的主题技术的进一步说明。
附图说明
在结合附图阅读下文的具体实施方式后，将更好地理解本公开的多个方面，在附图中：
图1示出包括根据本公开的卷收器传动机构的卷收器在车辆座椅上的布局的示意图；
图2示出包括根据本公开的卷收器传动机构的卷收器的组装侧视图；
图3示出包括根据本公开的卷收器传动机构的卷收器的分解立体图；
图4示出根据本公开的卷收器传动机构的分解立体图；
图5A和5B示出根据本公开的卷收器传动机构的组装立体图和剖视图；
图6A和6B示出根据本公开的卷收器传动机构的传动箱组件的剖视图和局部放大立体图；和
图7示出根据本公开的卷收器传动机构的调角盘组件的剖视图。
具体实施方式
以下将参照附图描述本公开，其中的附图示出了本公开的若干实施例。然而应当理解的是，本公开可以以多种不同的方式呈现出来，并不局限于下文描述的实施例；事实上，下文描述的实施例旨在使本公开的公开更为完整，并向本领域技术人员充分说明本公开的保护范围。还应当理解的是，本文公开的实施例能够以各种方式进行组 合，从而提供更多额外的实施例。
应当理解的是，在所有附图中，相同的附图标记表示相同的元件。在附图中，为清楚起见，某些特征的尺寸可以进行变形。
应当理解的是，说明书中的用辞仅用于描述特定的实施例，并不旨在限定本公开。说明书使用的所有术语(包括技术术语和科学术语)除非另外定义，均具有本领域技术人员通常理解的含义。为简明和/或清楚起见，公知的功能或结构可以不再详细说明。
说明书使用的单数形式“一”、“所述”和“该”除非清楚指明，均包含复数形式。说明书使用的用辞“包括”、“包含”和“含有”表示存在所声称的特征，但并不排斥存在一个或多个其它特征。说明书使用的用辞“和/或”包括相关列出项中的一个或多个的任意和全部组合。说明书使用的用辞“在X和Y之间”和“在大约X和Y之间”应当解释为包括X和Y。本说明书使用的用辞“在大约X和Y之间”的意思是“在大约X和大约Y之间”，并且本说明书使用的用辞“从大约X至Y”的意思是“从大约X至大约Y”。
在说明书中，称一个元件位于另一元件“上”、“附接”至另一元件、“连接”至另一元件、“耦合”至另一元件、或“接触”另一元件等时，该元件可以直接位于另一元件上、附接至另一元件、连接至另一元件、联接至另一元件或接触另一元件，或者可以存在中间元件。相对照的是，称一个元件“直接”位于另一元件“上”、“直接附接”至另一元件、“直接连接”至另一元件、“直接耦合”至另一元件或、或“直接接触”另一元件时，将不存在中间元件。在说明书中，一个特征布置成与另一特征“相邻”，可以指一个特征具有与相邻特征重叠的部分或者位于相邻特征上方或下方的部分。
在说明书中，诸如“上”、“下”、“左”、“右”、“前”、“后”、“高”、“低”等的空间关系用辞可以说明一个特征与另一特征在附图中的关系。应当理解的是，空间关系用辞除了包含附图所示的方位之外，还包含装置在使用或操作中的不同方位。例如，在附图中的装置倒转时，原先描述为在其它特征“下方”的特征，此时可以描述为在其它特征的“上方”。装置还可以以其它方式定向(旋转90度或在其它方位)，此时将相应地解释相对空间关系。
图1示意性示出具有安全带装置的车辆座椅的侧视图。车辆可以是乘用车或载货车，特别是部分自主驾驶的或者完全自主驾驶的机动车。车辆座椅具有座部5和靠背4。靠背4可以相对于座部5绕其转动轴从基本上直立的预定初始位置(在图1中用实线描述)向前和向后调节倾角。预定的初始位置对于乘员的就座来说是优化的。靠背4可以向前放倒在座部5上，以便腾出空间。靠背4可以向后调节至接近水平的最 大倾角位置，在该最大倾角位置上，乘员可以休息。参考车辆的前进方向，最大倾角位置可以对应于接近180°的倾角，例如大约170°的倾角。靠背4可以根据乘员的需要调节至初始位置与最大倾角位置之间的任意的中间位置，例如可以调节至大约120°或者135°的倾角。靠背5的两个末端位置在图1中用虚线描述。
车辆座椅设有车辆紧急状况时保护乘员免受惯性作用而受伤的安全带装置。安全带装置包括卷收器1。卷收器1设置在靠背4上，并且用于卷绕和收纳织带。如图2和3所示，卷收器1包括卷收器框17和卷轴33。卷收器框17呈U形，并且包括底壁和两个侧壁。卷收器框17通过底壁固定在靠背4上，并且通过两个侧壁和两个卷轴罩盖18、22的配合可转动地支撑卷轴33。卷轴33呈圆柱体状，并且用于卷绕织带。在卷轴33的一端和卷轴罩盖22之间设有卷收器弹簧。卷收器弹簧在卷收方向上预紧卷轴33，以对卷轴33施加返回其初始位置的回扭力。卷轴33的另一端固定至棘轮21，从而卷轴33和棘轮21能够一起同步转动。在车辆的紧急状况下，车感装置10止动棘轮21、并且由此止动卷轴33，从而卷轴33停止卷绕织带并束缚住乘员。棘轮21可以被容纳在卷轴罩盖18中，并且该卷轴罩盖18又被容纳在卷收器外盖23中。卷轴罩盖18、22和卷收器外盖23可以共同地固定至卷收器框17。
车感装置10用于检测车辆在紧急状况下产生的加速度。车感装置10包括敏感座14，敏感球25，敏感爪15，以及锁止爪8。敏感座14呈大致碗体状。敏感座14在碗体的外表面上设有两个沿相反方向向外伸出的枢转轴，从而敏感座14可枢转地安装在卷收器传动机构的传动箱组件9(下文将详述)上。敏感座14在碗体内的底部包括惯性体支撑面。惯性体支撑面作为车感装置10的基准面，需要始终保持在大致水平的位置。敏感球25安放在敏感座14的碗体内，并且在其初始位置时被支撑在惯性体支撑面上。敏感爪15可枢转地安装在敏感座14上，并且覆盖在敏感球25的上方。锁止爪8安装在卷收器1的卷收器框17上(例如在侧壁上)，并且位于敏感爪15和卷收器1的棘轮21之间。在车辆发生紧急状况而产生超过预定值的加速度时，敏感球25由于惯性作用离开惯性体支撑面、并沿敏感座14的碗体内表面发生向上的移位，从而带动敏感爪15向上枢转。敏感爪15的向上枢转将锁止爪8往上顶出并抵住卷收器1的棘轮21。棘轮21和卷轴33停止旋转，从而卷收器1停止卷绕织带并束缚住乘员。
带有车感装置10的卷收器1安装在靠背4内。在靠背4的初始位置，车感装置10处于基本上竖直定向中，并且惯性体支撑面处于大致水平的位置。当靠背4从初始 位置沿车辆的前后方向转动时，车感装置10不再处于基本上竖直定向，从而影响锁止功能。为使车感装置10在靠背4的倾角调节过程中始终保持正常工作，卷收器传动机构构造成自动地调节车感装置10的定位倾角，理想地使得车感装置10基本上保持在竖直定向中。另外也可能的是，卷收器传动机构可以仅部分地补偿车感装置10的由于靠背4调节倾角引起的与竖直方向的倾角偏差。例如，当靠背4从预定初始位置向后倾斜调节20°时，卷收器传动机构可以仅补偿车感装置10的20°倾角偏差的一半，从而车感装置10仍具有10°的倾角偏差。这与在车感装置10相对于靠背4固定安装并且从而存在20°倾角偏差的情况相比仍然改进了车感功能。
如图4、5A和5B所示，卷收器传动机构包括通过芯线组件2相连的传动箱组件9和调角盘组件3。调角盘组件3与靠背4的转动轴同轴设置，并且随靠背4的转动而转动。芯线组件2连接调角盘组件3和传动箱组件9，从而将调角盘组件3的转动角度传递至传动箱组件9。传动箱组件9位于芯线组件2和车感装置10之间，并且将调角盘组件3的转动角度传递至车感装置10，以调节车感装置10的定位倾角。
芯线组件2包括伸长的中空套管27和穿过套管27内部的芯线28。套管27包裹芯线28，并且限定芯线28的运动路径。套管27的第一端部26b和相对的第二端部26a分别固定至调角盘组件3的壳体和传动箱组件9的壳体。芯线28可以在套管27内独立于套管27自由移动，并且第一端部29和相对的第二端部30分别固定至调角盘组件3壳体内的调角滑轮31和传动箱组件9壳体内的传动滑轮19，从而将调角盘组件3的转动转换成传动箱组件9的转动。在其他实施例中，芯线组件2可以仅包括芯线28，而不包括中空套管27。
调角盘组件3用于将靠背4的转动角度传递给芯线组件2。调角盘组件3包括调角滑轮31、调角扳手12及扳手滑块7、以及壳体。壳体在其内容纳调角滑轮31和调角扳手12等内部部件，并且调角滑轮31和调角扳手12能够独立于壳体进行旋转。
壳体由两个半壳体13、11装配而成，并且半壳体11通过紧固件(例如螺钉等)安装在车辆座椅的靠背4上。壳体构造成和靠背4的转动轴传动连接。有利的是，壳体可以构造成与靠背4的转动轴同轴地固定连接。因此，当靠背4围绕其转动轴转动以调节倾角时，壳体随同靠背4一起同步转动。壳体可以在第一转动方向D1上和在与第一转动方向相反的第二转动方向D2上转动，其中，第一转动方向D1对应于靠背4倾角向后调节方向，第二转动方向D2对应于靠背4倾角向前调节方向。在此，将调角盘组件3上沿第一转动方向D1处于前部的部位称为前部部位，而沿第一转动方向 D1处于后部的部位称为后部部位。
壳体包括大致筒形的容纳部13-1、以及从容纳部13-1的边缘切向伸出的芯线进出部13-2。容纳部13-1的内部空腔包括半径较大的长径部13-3和半径较小的短径部13-4，以接收调角滑轮31和调角扳手12的转动部12-1。长径部13-3和短径部13-4周向彼此邻接。短径部13-4沿第一转动方向D1包括前端部13-5和后端部13-6。容纳部13-1的内部空腔的中心可以具有安装轴，调角滑轮31和调角扳手12的转环部12-1可转动地安装在安装轴上。芯线进出部13-2在容纳部13-1的径向上与短径部13-4邻接，并且包括两个接续的通孔。直径较大的通孔位于径向外侧，并且用于固定芯线组件2的套管27的第一端部26b。直径较小的通孔位于径向内侧，并且供芯线组件2的芯线28穿过。芯线组件2的芯线28穿过该直径较小的通孔，卷绕和固定在调角滑轮31上，下文将详述。
扳手滑块7固定安装至车辆座椅的座部5。调角扳手12包括彼此相连的滑动部12-2和转环部12-1。滑动部12-2可滑动地装配在扳手滑块7上，由此调角扳手12和扳手滑块7的组合体可以适配于不同的车辆座椅，并且可以补偿部件的误差以及靠背4调节倾角时产生的部件位置变化。转环部12-1围绕容纳部13-1的安装轴设置，并且设有从其表面向外伸出的挡块12-3，以在靠背4的倾角调节过程中限制或允许调角滑轮31旋转。
调角滑轮31大致呈圆环形。调角滑轮31包括半径较大的长径部31-1和半径较小的短径部31-2，并且长径部31-1和短径部31-2周向彼此邻接。长径部31-1沿第一转动方向D1包括前端部31-3和后端部31-4。长径部31-1在靠近后端部31-4的部分设有弧形开口31-5。弧形开口31-5在长径部31-1的全部或部分上周向延伸，并且与调角滑轮31同圆心。调角扳手12的挡块12-3被接收在调角滑轮31的弧形开口31-5中。当挡块12-3位于弧形开口31-5的前端部31-8和后端部31-9之间的位置时，调角滑轮31可以旋转；而在挡块12-3抵靠弧形开口31-5的端部时，调角滑轮31无法旋转。长径部31-1在靠近前端部31-3的部分设有芯线固定部31-6。芯线固定部31-6与短径部31-2毗邻，并且用于固定芯线组件2的芯线28的第一端部29，而芯线28的第二端部30固定至传动箱组件9。短径部31-2在其周缘外表面的一部分或全部上设有卷绕芯线28的绕线槽31-7。绕线槽31-7呈大致圆弧形，并且可以与调角滑轮31同圆心。绕线槽31-7自芯线固定部31-6引出，并且沿短径部31-2的周缘周向延伸，以接收来自芯线固定部31-6的芯线28，并限定芯线28的运动路径。绕线槽31-7的深 度和宽度优选地不小于芯线28的直径。
传动箱组件9用于将芯线组件2的芯线28的运动转化为转动角度传递给车感装置10。传动箱组件9包括传动滑轮19和壳体20、16。壳体20、16在其内容纳传动滑轮19等内部部件，并且传动滑轮19能够独立于壳体20、16进行旋转。
传动滑轮19呈大致礼帽状，并且包括环形基板、以及从环形基板的中心孔向外伸出的中空凸部，并且中空凸部为具有底板的筒体。环形基板设有芯线固定部19-1，以用于固定芯线组件2的芯线28的第二端部30。芯线固定部19-1可以设置在环形基板沿径向的中间或靠外部位。环形基板在其周缘的一部分或全部上设有卷绕芯线28的绕线槽19-2。绕线槽19-2呈大致圆弧形，并且可以与传动滑轮19同圆心。绕线槽19-2自芯线固定部19-1引出，并且沿环形基板的周缘周向延伸，以接收来自芯线固定部19-1的芯线28，并限定芯线28的运动路径。绕线槽19-2的深度和宽度优选地不小于芯线28的直径。传动滑轮19的绕线槽19-2与调角滑轮31的绕线槽31-7半径大致相同，从而在传递过程中无需增加额外的小齿轮来修正调角滑轮31和传动滑轮19之间的传动比。另外，如图5A和5B所示，调角滑轮31和传动滑轮19布置在延伸的芯线28的同一侧，从而调角滑轮31和传动滑轮19形成同向滑轮传动。在车辆座椅的靠背4的倾角调节过程中，调角滑轮31和传动滑轮19的旋转方向保持为同一方向。
传动滑轮19的环形基板还设有垂直于其外表面伸出的推动杆19-3，并且敏感座14在碗体底部设有向下伸出的两个平行伸出臂14-1。推动杆19-3插在两个伸出臂14-1之间，并且可以沿车辆的前后方向转动敏感座14，以确保敏感座14内的惯性体支撑面始终保持在大致水平的位置。在一些实施例中，推动杆19-3具有球形或椭圆形的头部，并且该头部插入两个伸出臂14-1之间，以带动敏感座14转动。
传动滑轮19的中空凸部用于接收传动滑轮弹簧24。传动滑轮弹簧24给传动滑轮19提供回扭力，以将传动滑轮19沿周向偏压至其初始转动位置。
壳体包括两个半壳体20和16。两个半壳体20和16通过卡扣配合装配在一起，并且半壳体16通过紧固件(例如螺钉等)固定至卷收器1(例如在卷收器外盖23上)。半壳体20包括大致筒形的容纳部20-1、以及从容纳部20-1的边缘沿切向伸出的芯线进出部20-2。芯线进出部20-2呈大致伸长状，并且内部包括两个通槽。两个通槽彼此接续，并且上方敞开。直径较大的通槽位于径向外侧，并且用于固定芯线组件2的套管27的第二端部26a。直径较小的通槽位于径向内侧，并且供芯线组件2的芯线28穿过。芯线组件2的芯线28穿过该通槽，卷绕在传动滑轮19的绕线槽19-2上，并且 最终固定至传动滑轮19的芯线固定部19-1。
容纳部20-1包括环形基板、从环形基板的中心孔伸出的中空凸部、以及从环形基板的周缘沿与中空凸部相反的方向伸出的凸缘部。半壳体20的中空凸部为具有底板的筒体，并且形状大致匹配并稍大于传动滑轮19的中空凸部的形状，以容纳传动滑轮19的中空凸部。容纳部20-1的中空凸部在其底板上具有伸出的中心柱，并且传动滑轮19的中空凸部在其底板上具有供中心柱穿过的中心孔，从而传动滑轮19可以绕中心柱相对于半壳体20转动。
半壳体16包括基板、以及固定至基板的车感架16-1。基板的外轮廓形状与容纳部20-1和芯线进出部20-2的组合外轮廓形状大致对应。在芯线组件2的套管27的第二端部26a放入半壳体20的芯线进出部20-2、并且传动滑轮19和传动滑轮弹簧24放入半壳体20的容纳部20-1后，基板可以覆盖容纳部20-1和芯线进出部20-2，从而半壳体16和20将芯线组件2的套管27的第二端部26a、传动滑轮19和传动滑轮弹簧24包封在其内。基板设有开口16-2，以供传动滑轮19的推动杆19-3伸出并来回转动。半壳体16在其内表面上设有弹簧固定部，并且传动滑轮19的中空凸部的底板亦设有弹簧固定部。传动滑轮弹簧24可以为螺旋弹簧，并且其一端的支脚固定至传动滑轮19的弹簧固定部，并且其另一端的支脚固定至半壳体16的弹簧固定部。
如图6A-6B所示，车感架16-1用于可枢转地支撑车感装置10的敏感座14。车感架16-1包括平行于基板延伸的支撑杆、以及将支撑杆的两端支撑在距基板一定距离处的两个支撑腿。支撑杆和相对的基板上设有对应的枢转孔，以用于接收敏感座14的枢转轴，从而敏感座14在传动滑轮19的推动杆19-3的作用下，能够相对于半壳体16以及整个传动箱组件9枢转。车感架16-1可以与半壳体16的基板一体成型，或者可以分开成型并通过连接件连接在一起。
下面参照车辆坐标系，介绍卷收器传动机构的工作原理。首先介绍车辆座椅的靠背4从基本上直立的初始位置向后调节的过程。图7是调角盘组件3在该工作状态下的示意图。当靠背4从基本上直立的初始位置沿第一转动方向D1向后调节时，调角扳手12的挡块12-3与调角滑轮31的弧形开口31-5的后端部31-9贴靠，调角滑轮31被调角扳手12固定不动。调角盘组件3的壳体13、11跟随靠背4在第一转动方向D1上转动，并且芯线28缠绕绕线槽31-7的一段。壳体13、11可以从如图7所示位置沿着第一转动方向D1继续转动，换言之，车辆座椅的靠背4可以继续朝后调节倾角，与此同时，芯线28可以继续在绕线槽31-7上卷绕。
上述的运动过程也可以根据运动相对性以车辆座椅的靠背4为参照系如下地描述。在车辆座椅的靠背4从基本上直立的初始位置沿第一转动方向D1向后调节时，与靠背4固定的调角盘组件3的壳体13、11是固定不动的，与座部5固定的调角扳手12在第二转动方向D2上转动，由于调角扳手12的挡块12-3挡靠在调角滑轮31的弧形开口31-5的后端部31-9上，调角扳手12带动调角滑轮31沿第二转动方向D2一起转动，使得芯线28被卷绕到绕线槽31-7上。如上所述，调角滑轮31和传动滑轮19布置在芯线28的同一侧，从而调角滑轮31和传动滑轮19构成同向滑轮传动。相应的，在传动箱组件9侧，芯线28从传动滑轮19的绕线槽19-2上退绕，并且传动滑轮19沿第二转动方向D2转动。传动滑轮19利用推动杆19-3来推动车感装置10的敏感座14，使得敏感座14沿第二转动方向D2发生转动。
靠背4相对于固定的座部5沿第一转动方向D1转动一定的角度，而安装在靠背4上的敏感座14相对于靠背4沿相反的第二转动方向D2转动一定的角度，从而将车感装置10保持在大致竖直的定向。
下面继续参照车辆坐标系，描述卷收器传动机构的工作过程。如果从如图7所示的向后倾角的位置出发，车辆座椅的靠背4沿第二转动方向D2返回直立的初始位置，则调角盘组件3的壳体13、11在第二转动方向D2上转动，直至壳体13、11的短径部13-4的后端部13-6大致接触调角滑轮31的长径部31-1的前端部31-3为止。调角滑轮31在芯线28被预紧的情况下以弧形开口31-5的后端部31-9保持压靠在挡块12-3上，芯线28从绕线槽31-7上退绕。
上述的运动过程也可以根据运动相对性以车辆座椅的靠背4为参照系如下地描述。在车辆座椅的靠背4从向后倾角的位置沿第二转动方向D2返回基本上直立的初始位置时，与靠背4固定的调角盘组件3的壳体13、11是固定不动的，与座部5固定的调角扳手12在第一转动方向D1上转动。调角滑轮31随着挡块12-3沿第一转动方向D1转动，使得芯线28从绕线槽31-7退绕。相应的，在传动箱组件9侧，芯线28卷绕到传动滑轮19的绕线槽19-2上，并且传动滑轮19沿第一转动方向D1转动。传动滑轮19借助推动杆19-3来推动车感装置10的敏感座14，使得敏感座14沿第一转动方向D1发生转动。
靠背4相对于固定的座部5沿第二转动方向D2转动一定的角度，而安装在靠背4上的敏感座14相对于靠背4沿相反的第一转动方向D1转动一定的角度，从而将车感装置10保持在大致竖直的定向。
下面继续参照车辆坐标系，来描述卷收器传动机构的工作过程。在车辆座椅的靠背4从基本上直立的初始位置沿第二转动方向D2开始向前调节时，固定至靠背4的调角盘组件3的壳体13、11沿着第二转动方向D2转动。此时，壳体的短径部13-4的后端部13-6恰好接触调角滑轮31的长径部31-1的前端部31-3，并且壳体13、11带动调角滑轮31一起运动。弧形开口31-5的存在允许调角滑轮31与壳体13、11一起运动，它们可以一起运动直至弧形开口31-5的前端部31-8抵靠挡块12-3。调角滑轮31与壳体13、11的一起运动可以对应于车辆座椅的靠背4的朝前放倒过程，在此过程中，车感装置10借助于调角盘组件3的倾角调节是不需要的。相应的，芯线28没有在绕线槽31-7上发生绕线操作，由此传动滑轮19和车感装置10不会相对于椅背12发生转动。
当车辆座椅的靠背4从朝前放倒在座部21上的位置出发返回到直立的初始位置时，安装至靠背4的调角盘组件3的壳体13、11在第一转动方向D1上转动，调角滑轮31被预紧的芯线28牵拉并且从而与壳体13、11一起在第一转动方向D1上转动，直至弧形开口31-5的后端部31-9到达挡块12-3并且从而调角滑轮31被调角扳手12和扳手滑块7固定不动。调角滑轮31与壳体的一起运动可以对应于车辆座椅的靠背4从朝前放倒返回到直立的初始位置的过程，在此过程中，车感装置10借助于调角盘组件3的倾角调节是不需要的。相应的，芯线28没有在绕线槽31-7上发生绕线操作，由此传动滑轮19和车感装置10不会相对于椅背12发生转动。
如上所述，现有线控调角卷收器的二级齿轮传动机构需要使用小齿轮来修正调角滑轮和传动滑轮之间的传动比。芯线与调角滑轮和传动滑轮形成反向滑轮传动。调角滑轮的旋转直接带动芯线卷绕，芯线运动带动传动滑轮旋转，传动滑轮的旋转带动小齿轮旋转，小齿轮修正传动比并且小齿轮与传动滑轮旋向相反，小齿轮将旋转传递给车感装置。传动滑轮的旋向与车感装置的旋向相反。
根据本公开的线控调角卷收器采用直接传动的传动机构，省略掉了小齿轮。芯线与调角滑轮和传动滑轮形成正向滑轮传动。调角滑轮与传动滑轮的绕线直径相同，因为无需提供小齿轮来修正传动比。调角滑轮的旋转带动芯线运动，芯线运动带动传动滑轮旋转，传动滑轮的旋转直接推动车感装置旋转，实现了传动滑轮直接传动车感装置，并且传动滑轮的旋向与车感装置的旋向一致。
根据本公开的卷收器传动机构无需小齿轮来修正传动比，零件数量少、零件精度要求降低，并且传动简洁、传动精度高，提高了产品的适用性。另外，根据本公开的 调角盘组件和传动箱组件尺寸较小，便于客户安装。
虽然已经描述了本公开的示范实施例，但是本领域技术人员应当理解的是，在本质上不脱离本公开的精神和范围的情况下能够对本公开的示范实施例进行多种变化和改变。因此，所有变化和改变均包含在权利要求所限定的本公开的保护范围内。本公开由附加的权利要求限定，并且这些权利要求的等同物也包含在内。

Claims (9)

  1. 一种用于车辆安全带装置的卷收器的卷收器传动机构，其特征在于，所述车辆的座椅包括座部、以及能够相对于座部绕转动轴调节倾角的靠背，所述卷收器被安装在靠背上并且包括车感装置，所述卷收器传动机构包括：
    调角轮组件，所述调角轮组件包括调角壳体和设置在调角壳体内的调角滑轮，调角壳体构造成与和靠背的转动轴传动连接，调角滑轮能够独立于调角壳体进行旋转、并且具有圆弧形的绕线槽；
    传动箱组件，所述传动箱组件包括传动壳体和设置在传动壳体内的传动滑轮，传动壳体安装至卷收器，传动滑轮能够独立于传动壳体进行旋转、并且具有圆弧形的绕线槽，传动滑轮的绕线槽和调角滑轮的绕线槽半径大致相同；和
    芯线，所述芯线的第一端部和相对的第二端部分别被固定至调角滑轮和传动滑轮，并且芯线能够被卷绕在调角滑轮的绕线槽和传动滑轮的绕线槽上。
  2. 根据权利要求1所述的卷收器传动机构，其特征在于，调角滑轮和传动滑轮被设置在延伸的芯线的同一侧，并且调角滑轮和传动滑轮形成同向滑轮传动。
  3. 根据权利要求1所述的卷收器传动机构，其特征在于，传动滑轮的绕线槽设置在传动滑轮的周缘外表面的一部分或全部上。
  4. 根据权利要求1-3中任一项所述的卷收器传动机构，其特征在于，传动滑轮被构造成在靠背相对于座部调节倾角的过程中与车感装置保持旋向一致。
  5. 根据权利要求4所述的卷收器传动机构，其特征在于，传动滑轮设有从其径向外表面向外伸出的推动杆，所述推动杆构造成推动车感装置沿车辆的前后方向转动。
  6. 根据权利要求5所述的卷收器传动机构，其特征在于，车感装置包括具有惯性体支撑面的敏感座、以及被支撑在惯性体支撑面上的敏感球，其中，敏感座在其底部设有向下伸出的两个臂部，并且推动杆被插在两个臂部之间。
  7. 根据权利要求6所述的卷收器传动机构，其特征在于，推动杆具有球形或椭圆形的头部，并且所述头部插入两个臂部之间。
  8. 根据权利要求1-3中任一项所述的卷收器传动机构，其特征在于，传动滑轮设有芯线固定部，以用于固定芯线的端部。
  9. 一种用于车辆的安全带装置，其特征在于，所述安全带装置包括卷收器和用于所述卷收器的根据权利要求1-8中任一项所述的卷收器传动机构。
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