JP2704563B2 - Safety belt device - Google Patents

Description

Description: BACKGROUND OF THE INVENTION The present invention relates to a belt retractor which is incorporated in a backrest of a vehicle seat and performs a detent, when the belt retractor exerts acceleration or deceleration on the belt. It has a control device that is sensitive to the vehicle to start the locking of the winding shaft, and the sensor of this control device that is sensitive to the vehicle is provided rotatably with respect to the belt winder and connected to the sensor housing. Through a flexible shaft, the position of the sensor can be adapted to the tilt of the backrest, and the axis of rotation of the sensor housing with respect to the belt winder extends through the point of engagement of the sensor lever with the control plate hobbing. The safety belt device.

[Conventional technology]

A safety belt device according to the generic concept is known from DE 2658747. What is important for this type of safety belt device is that in a belt winder integrated into the backrest, the adjustment of the backrest at different inclinations with respect to the sensitive sensors of the vehicle is carried out in each case in the direction of the acceleration of gravity. Compensation, so that the effectiveness of the sensor is ensured even at various tilts of the backrest.

In an embodiment, in the safety belt device according to the general concept, a sensor is rotatably provided on the belt winder, and the sensor is disposed on a component rotatable about the axis of the belt winding shaft. The projecting piece of this component projects outside the belt winder and is acted on by the device for transmitting the movement of the parts of the vehicle seat and is brought into a desired position, in which the vehicle sensor Is held in the direction of the gravitational acceleration.

This known device has the disadvantage that the movement of the seat part is first detected and transmitted via a complicated mechanical connection to the belt-winding device and to a vehicle-sensitive sensor. This device is disadvantageous in expensive construction styles and complicated adjustments.

[Problems to be solved by the invention]

The object of the present invention is to improve a safety belt device according to the generic concept, so that a direct conversion of the tilting of the backrest is possible, while at the same time simplifying the structural design of the sensor device in the belt winder.

[Means for solving the problem]

To solve this problem, according to the present invention, a flexible shaft is provided between the sensor housing and the seat fitting, and is coupled to the sensor housing and the seat fitting so as not to rotate relative to each other.

〔The invention's effect〕

The automatic following of the sensor housing takes place during the adjustment of the seat, the movement of the seat part itself being used for this following movement, and special detection devices or resetting devices for resetting the sensor housing of the belt winder. No drive is required.

The invention contemplates, in embodiments, various adaptations of the guide of the rotatable shaft to the belt winder or the sensor device of the belt winder. This is because, depending on the position of the belt winder in the backrest and the arrangement of the left or right backrest adjusting device in the seat, the same guidance or the same mounting of the flexible shaft in the sen housing cannot be guaranteed.

In this case, the first embodiment starts from arranging the backrest adjusting device to rotate in the same direction with respect to the sensor housing of the belt winder, so that the invention provides for the flexible shaft to have a sensor It is proposed to mount directly on the axis of rotation of the housing. Interlocking connections between the flexible shaft and the sensor housing and between the flexible shaft and the seat fitting no longer require adjustment of the vehicle-sensitive restraint after the installation of the belt winder on the backrest. There is an advantage that it is not. This is because the connection of the flexible shaft with the sensor housing and the seat fitting can only take place in one single position, so that a suitable alignment is already achieved when the components are connected. This advantageously involves a simple assembly.

Another embodiment proposes a solution for the accommodation of the backrest adjustment device and the belt winder, in which the solution comprises:
Since the flexible shaft is arranged to rotate in the opposite direction and is turned, it is necessary to change the direction of rotation when adjusting the backrest for following the sensor housing. For this purpose, the invention provides that the flexible shaft acts on a rotatably mounted circular arc, which is connected to a sensor housing for a rotational movement that is shaped to this circular arc, It is proposed that the arc and the radius of the sensor housing are matched and that the axis of rotation of the sensor housing extends through the control point of the sensor lever. The coupling by the movement of the components is effected in the preferred embodiment by means of an intermediate gear cut which allows a further reduction of a ratio of 2: 1.

The third embodiment shows the connection of the flexible shaft to the angled sensor housing, and such a solution can also advantageously realize various adaptations of the flexible shaft and the belt winder. Also in this embodiment, the sensor housing is formed in an arc shape and has a radius dimensioned such that the rotation point of the sensor housing is located at the control point of the sensor lever. On the outer periphery of the sensor housing formed in an arc shape, it is possible to arrange a component that fits and is connected to the flexible shaft through a bevel gear in any manner.

A particular problem in the implementation of the present invention arises from the fact that the tilt adjustment of the backrest can be made with respect to a plurality of axes of rotation.
In addition to the direct adjustment of the tilt of the backrest relative to the seating surface of the vehicle seat, the inclination of the seat as a whole also changes the backrest angle and, consequently, the vehicle-sensitive control of the belt retractor arranged on the backrest. Influence the position of the device. For this purpose, separate axes of rotation are possible for the backrest adjustment.

Accordingly, another object of the present invention is to provide an arrangement of a flexible shaft in a backrest that is integrated into a backrest over a plurality of unrelated rotational axes for changing the position of the backrest of a vehicle seat. So that the following of the control device which is susceptible to the vehicle in the container is ensured.

For this purpose, the invention is embodied in an embodiment in which the flexible shaft is guided parallel to the respective axis of rotation for the backrest adjusting device via an attached part and is suitably held in the seat. It takes into account the inventive idea. Thus, the guidance and tightening of the flexible shaft of the seat during the adjustment of the backrest about the rotational axis allows the flexible shaft to be fixed relative to the fixed tightening of the seat in the part oriented parallel to the associated rotational axis. The advantage is that a movement is realized and this relative movement is translated into the following of the vehicle-sensitive control device on the belt winder. In this way, the provision of a holding device and a fixing device for the flexible shaft oriented parallel to this rotation axis for each rotation axis makes it possible to guide the flexible shaft beyond a plurality of rotation axes. According to an embodiment, a sleeve covering the flexible shaft is arranged on the backrest, the longitudinal axis of which is oriented substantially parallel to the axis of rotation for adjusting the backrest. In this case, when the flexible shaft is fixedly arranged in the vehicle seat, the longitudinal axis of the sleeve for holding and guiding the flexible shaft coincides with the rotation axis, and this means can be used to simultaneously fix the flexible shaft in the seat portion. The flexible shaft is mounted on an axis of rotation, for example for seat tilt, as it also applies to the tightening.

However, the invention is not limited to the fixed arrangement of the flexible shaft in the backrest and the consequent arrangement of the sleeve on the respective axis of rotation. This is because other attachments in the backrest do not possibly allow such guidance of the flexible shaft. In such a case, the sleeve as the guide for the flexible shaft does not need to coincide with the rotation axis for adjusting the backrest, and the sleeve can be arranged offset with respect to the rotation axis. The portions of the flexible shafts held in parallel are arranged parallel to the respective rotation axes. In such a case, a fixed arrangement of the flexible shaft on the backrest is not possible, since an additional twist is applied to the flexible shaft during the adjustment of the backrest about the axis of rotation. To compensate for this, the present invention provides for the flexible shaft with the part to be defined to be guided in a free, unfixed arrangement to the sleeve or the pivot point of the flexible shaft.
In this case, the degree and direction of the additional torsion depend on the holding position of the flexible shaft with respect to the rotation axis for adjusting the backrest and the length l of the free arrangement. The rotational movement effected by the adjustment can be the rotational movement of the flexible shaft, and thus also the acceleration or deceleration of the follow-up movement of the belt winder for control devices which are sensitive to the vehicle.

According to another embodiment of the present invention, the flexible shaft is mounted on the seat bracket on the axis of rotation of the seat back, so that when the backrest swings relative to the seating surface of the vehicle seat, the fixed fastening of the seat bracket is performed. The relative movement of the flexible shaft, which is guided in the backrest with respect to, is converted into a rotational movement in the belt winder for following a vehicle-sensitive control device.

Another problem in the realization of the present invention arises when the seat is swingable about an axis, for example within the range of seat height adjustment, which axis is outside the flexible shaft arrangement. The relative movement of the seat part with respect to the flexible shaft cannot occur during a swing of the seat about an external axis, since it cannot be located or detected by this flexible shaft in distance. However, such an oscillation of the entire vehicle seat leads to a change in the position of the belt winder and thus also to a change in the orientation of the control device which is sensitive to the vehicle, in the direction of the gravitational acceleration. In this case, the control device which is easily affected by the vehicle is appropriately followed. In this case, since the position from the backrest to the seating surface is unchanged, the swing of the vehicle seat cannot be transmitted directly to the vehicle sensor via the flexible shaft.

Therefore, another object of the present invention is to provide a control device which is susceptible to a vehicle via a flexible shaft even when a vehicle seat is swung about a rotation axis outside the arrangement of the flexible shaft. The solution is to provide a solution that allows

For this purpose, the invention makes it possible to convert the movement of the pivot point for the flexible shaft during the rocking movement of the seat, via a transmission, into a rotation of the flexible shaft which follows the sensor housing in the belt winder. That is, the invention idea embodied in the embodiment is taken into consideration. In this case, the invention takes advantage of the fact that the flexible shaft is passed through the seat fitting and is connected to the lever so as not to rotate relative thereto. In pivoting the seat about an axis outside of this arrangement, the lever attempts to follow the pivoting movement with respect to its position, and the position of the lever changes by the angle of the seat pivot in the direction of the gravitational acceleration. . According to the invention, the lever is fixed in position by the transmission, so that the movement of the seat fitting, and thus also the pivoting of the flexible shaft at the upper end, always has the same angle with respect to the direction of the gravitational acceleration. Because of the following, the swing of the vehicle seat is converted into a twist of the flexible shaft by the linear forced movement, and the twist is directly transmitted to the following of the vehicle sensor in the belt winder.

According to an embodiment of the invention, the forcibly guided lever is part of a parallelogram linkage, which is supported on the seat, in particular on a mechanical device for adjusting the seat height. , Thus causing the translation of the lever.

According to another embodiment, the lever is configured as a push rod extending in the direction of movement of the seat fitting, so that the lever supporting the flexible shaft always moves at the same angle with respect to the direction of the gravitational acceleration. Can be

According to a third embodiment of the present invention, the other free end of the lever is movably connected to a connecting rod, which is fixedly connected to the seat part and rotates the seat swing. It can swing about an axis.

Another problem is that not only can the backrest be tilted, but it can also be swung completely forward, depending on the construction of the vehicle, with the acceleration occurring through the slewing stroke increasing, resulting in a backrest. It consists in that the sensor of the integrated belt winder is activated, whereby the belt winder is restrained with respect to the belt pull-out movement. Therefore, according to an embodiment of the present invention, a device for preventing the engagement of the sensor lever with the gear cutting portion of the control plate during the swinging motion of the backrest is also provided, but this device is also provided with a device for the backrest. Allows the sensor to follow via rotary movement during normal tilt adjustment.

According to an embodiment of the present invention, a restraint lever coupled to a restraint release lever for a backrest is attached to the sensor lever, and the restraint lever fixes the sensor lever when the restraint release lever is operated. Since the backrest must be released first with respect to the complete swinging of the backrest, the sensor lever is fixed by the release of the backrest, so that the sensor follows the rotation by the swinging motion of the backrest and the coupling in the seat bracket through the shaft. Despite being restrained, the sensor lever is not restrained.

Alternatively, according to an embodiment of the present invention, a detection lever is mounted on the sensor lever, which slides along a guide surface formed on the belt winder. This guide surface on the belt winder is used for the sensor lever to be fixed by the detection lever via the sliding stroke according to the invention outside the normal tilt adjustment stroke, while the swing in the range of the normal tilt adjustment stroke. Since the guide surface releases the detection lever outside the stroke, the sensor lever can operate in a functional manner.

〔Example〕

An embodiment of the present invention is shown in the drawings and will be described in detail below.

A belt winder 12 is incorporated in a backrest 10 having a seat bracket 11, and the belt winder 12 is a double-headed arrow.
The seat bracket 11 is connected via the flexible shaft 13 so that a change in the inclination of the backrest 10 in the direction of 14 is converted into a rotational movement of the flexible shaft 13.
Is combined with

FIG. 2 shows a control plate 16 and a gear cutting portion 17 on the control plate.
A sensor 15 is shown that interacts with the sensor. The sensor 15 has a ball-shaped housing 18, in which a ball 19 is arranged so as to freely roll. On ball 19,
A lever 21 arranged rotatably about an axis 20 is mounted on the sensor housing 18, and the ball 19 in the housing 18 is
When changing the position for acceleration or deceleration acting on it, the lever 21 is moved outwardly from the deactivated position shown in FIG. 2 until its tip 22 engages with the gear cut 17 of the control plate 16. Swingable. The engagement point of the engagement position of the sensor lever 21 in the gear cutting portion 17 of the control plate 16 is shown as a control point 23. Further, in FIG. 2, the possible extreme positions of the sensor housing 18 are indicated by broken lines.

The rotatable arrangement of the sensor housing 18 in the belt winder 12 is not shown. As can be seen more clearly from FIG. 3, it has been realized in the embodiment shown in FIGS. 1 to 3 that the seat fitting 11 and the housing follower are arranged to rotate in the same direction. In this case, the flexible shaft 13 is mounted directly on the sensor housing 18 on the axis of rotation 24 of the sensor housing, which is fixed by the control point 23, and is configured as a bayonet connection, a non-rotating fitting connection. Since it is mounted via 25, upon rotation of the flexible shaft 13 indicated by the arrow 26, the sensor housing 18 rotates about a rotation axis 24 coinciding with the control point 23, and as a result the backrest The follow-up of the sensor housing synchronous with the adjustment is guaranteed.

FIG. 4 shows an embodiment. In this embodiment, the correspondence between the positions of the seat fitting 11 and the belt winder 12 is the first.
The arrangement is different from that in the figure, whereby the flexible shaft 13 can be arranged to rotate in the opposite direction to the orientation in FIG. Need to change direction of rotation between. To this end, FIG. 5 shows a structural solution for sensor following, in which the extreme positions of the sensor housing 18 are indicated by broken lines. In this embodiment, unlike the embodiment according to FIGS. 1 to 3, the mounting point of the flexible shaft 13 in the sensor housing 18 and the rotation axis 24 of the sensor housing 18 are spatially separated from each other. The fitting joint 25 of the flexible shaft 13 is attached to a rotatable fan-shaped piece 27. Since the outer shape of the sensor housing 18 conforms to the shape of the rotatable sector 27, these arc surfaces can contact each other. Sector in the area of the contact area
Since the gear 27 and the gear cutting portion 28 attached to the sensor housing 18 are provided, the rotational movement of the sector 27 is converted into the rotational movement of the sensor housing 18. In this case, a reduction ratio can be realized. The radius of the circular sensor housing 18 is adjusted with respect to the upper edge of the associated gear cut 28 such that the axis of rotation of the sensor housing 18 passes through the control point of the sensor lever.

FIG. 6 shows an embodiment, in which the flexible shaft 13 is guided at right angles to the belt winder 12, so that the end 29, which can be seen in FIG. It contacts the sensor housing 18 formed in an arc shape. Since the radius of the sensor housing 18 formed in an arc shape is dimensioned so that the virtual center point of the sensor housing is located at the control point 23, the rotation of the sensor housing 18 is always performed at the control point.
The rotation is performed around a rotation axis 24 coincident with 23. Flexible shaft 13
The coupling between the sensor housing 18 and the end 29, which is coupled by the engagement coupling 25, can be effected via a bevel gear-shaped coupling device.

As can be seen from FIG. 8, the vehicle seat 9 can in one embodiment be formed with two rotational axes for adjusting the backrest 10, ie the backrest 10 is displaceable with respect to the seat portion 30 of the vehicle seat 9. It is possible to form one rotation axis 31 and another rotation axis 32 in which the entire seat 9 is pivotably arranged. Even if the backrest 10 in this configuration of the vehicle seat is invariant in tilt with respect to the seat part 30 at the axis of rotation 31, the rocking movement of the seat 9 about the lower axis of rotation 32 is arranged on the backrest 10. The position of the belt winder 12 is changed (FIG. 9).

As shown in FIG. 9, the belt winder 12 or a vehicle-sensitive control device and a seat of this belt winder rotatably mounted on the belt winder housing. The flexible shaft 13 is arranged between the metal fitting 33 and the flexible shaft 13. The flexible shaft 13 is connected to the sensor and the seat metal fitting 33 which are susceptible to the vehicle so as not to rotate relatively.

The rotation axes 31, 32 realized in the seat 9 in this embodiment.
, The flexible shaft 13 is first moved from the belt winder 12 to the seat portion.
The upper axis of rotation 31 for adjustment of the backrest 10 relative to 30 is guided to the upper axis of rotation 31 and in this case extends along the axis of rotation 31 via the part 34 in a fixed arrangement and the part 34 of the flexible shaft 13
Is surrounded and rotatably supported by a sleeve 35 fixedly connected to the backrest 10. The flexible shaft 13 extends from the sleeve 35 to a further lower rotation axis 32, about which the seat 9 can be swung about. In this case, the flexible shaft 13 is connected to the attached seat fitting 33 on this rotation axis, and in this case also, the flexible shaft 13 is oriented through one part in the same direction as the rotation axis 32. . A fixed arrangement of the flexible shaft 13 in the backrest 10 is possible, as long as the mountings and guides for the flexible shaft 13 in the backrest 10 can be arranged in the same direction as the respective axes of rotation 31,32.

If the backrest 10 is rotated in the direction of the double arrow 26, for example by pivoting the seat 9 about the lower axis of rotation 32, this pivoting movement is caused by the fixed pivoting of the flexible shaft 13 in the attached seat fitting 33. As a result of the coupling, a rotational movement in the same direction is converted, so that the vehicle-sensitive control device is appropriately followed in the belt winder.

If the adjustment of the backrest is made only via the upper axis of rotation 31, for example, the branches 36 of the vertically arranged flexible shaft 13
Is the sleeve 35 or a flexible shaft guided in this sleeve
This relative movement of the vertical branch 36, which is rotated with respect to the part 34 of the flexible shaft 13, and the rest of the flexible shaft 13, which is fixed by the sleeve 35 and fixedly connected to the seat fitting 33, Leading to a rotational movement of the flexible shaft in the area between the take-up 12 and the sleeve 35, this rotational movement being
This is useful for following the control unit 12 which is sensitive to the vehicle.

FIG. 10 shows the case where the axis for the partial fixation of the flexible shaft 13 cannot coincide with the rotation axis 31 or 32 of the backrest 10, for example, because the structural conditions do not allow the arrangement of the sleeve 35 in the backrest. The arrangement of the guide or mounting axis for the flexible shaft 13 is shown. According to FIG. 10, the holding axis 37 for the flexible shaft 13 is shifted upward, for example with respect to the rotation axis 33 of the backrest 10.

Flexible shaft 13 during rotation of backrest 10 about axis 33
Important to the degree of additional torsion and the associated transmission error is the spacing A between both axes 37 and 33. To offset the errors associated with it, the flexible shaft 13
Are freely and unguidedly arranged on the backrest 10 over a length 1 to be selected structurally. In this case, the larger the length l with respect to the interval A, the smaller the transmission error. Thus, preferably, the length l is at least about twice as large as the distance A. Because in that case the angle α drawn by the backrest 10 during adjustment
Is approximately the same as the torsion angle β of the flexible shaft 13, and this approximate angular agreement can be achieved as a preferred embodiment of the present invention. However, depending on the construction conditions, even larger deviations can be tolerated or offset by other means without losing the underlying idea of the invention.

The present invention is not limited to the correspondence between the belt winder 12 and the mounting portion 33 for the flexible shaft 13 as can be seen from FIG. The present invention
The arrangement of the belt winder 12 and the mounting portion 33 for the flexible shaft on the same seat side can be realized as well as the belt winder, so that the U-shaped arrangement of the flexible shaft 13 in the backrest 10 can be achieved. . With such an arrangement of the flexible shafts 13, the mounting or guiding element also provides partial guidance of the flexible shafts parallel to the respective rotation axes at a plurality of rotation axes for adjusting the backrest. Thus, the present invention can be realized.

Furthermore, the invention is not limited to the exact parallel arrangement of the guided part 34 of the flexible shaft and the rotation axes 31, 32 of the vehicle seat 9. Since deviations from the parallel guidance only result in greater transmission errors, tolerances are acceptable within this range within the scope of the invention.

FIG. 11 shows a vehicle seat 9 having a backrest 10 and a seating surface 40.
The seat 9 rests on a base frame 41 and as a whole is provided with a rotational axis provided at the front edge of the seating surface 40.
It can swing around 42. For this purpose, the vehicle seat 9 has a push rod-shaped height adjusting device 43 on the rear side.

A belt winder 12 is arranged in the backrest 10 of the vehicle seat 9 and the vehicle-sensitive control device of the belt winder is movably arranged in a manner not shown. In addition, the direction of the gravitational acceleration can be readjusted. The vehicle sensor of the belt winder 12 is connected to the seat bracket 33 via the flexible shaft 13. Therefore, the flexible shaft 13
Is guided to a seat bracket 33 at a rotation axis 31 for adjusting the backrest 10 with respect to the seating surface 40, and is attached thereto so as not to rotate relative thereto.

In FIG. 11, the departure position of the vehicle seat 9 is indicated by a solid line, and the position of the vehicle seat 9 in a state where the vehicle seat 9 is swung upward about the axis 42 is indicated by a broken line. As can be seen, since the position of the backrest 10 with respect to the seating surface 40 has not been changed by adjusting the height of the seat, no action is taken on the flexible shaft 13 as far as it is, so that the vehicle sensor is not displaced. However, the displacement of the vehicle seat from the position indicated by the solid line to the position indicated by the dashed line leads to a change in the position of the belt winder 12, so that the vehicle sensor is moved from the axis oriented in the direction of the gravitational acceleration. It has been swung outwards and therefore has no operational capacity. For this reason, axis 42
It is necessary to follow the vehicle sensor even when the seat 9 swings around the vehicle.

In order to realize this follow-up, the flexible shaft 13 is
And is non-rotatably coupled to the upper end of a lever 44, which in the embodiment shown in FIG. 11 is part of a parallelogram linkage 45, This parallelogram link mechanism is connected to the upper end of the push rod-shaped height adjusting device 43. Thus, when the seat 9 swings about the axis 42, the lever 44 is translated at the same angle with respect to the direction of the gravitational acceleration.

As a result of this movement, corresponding to a forced guidance, at the same angle with respect to the direction of the gravitational acceleration, the flexible shaft rotates by the angle at which the seat 9 is swung about the rotation axis 42.
That is, if there is no forcible guidance, the lever 44 rotates about the axis 42 by the swing of the seat, and changes its angular position with respect to the direction of the gravitational acceleration. This is prevented by the forced guidance provided by the parallelogram link mechanism 45, so that the oscillating movement of the seat 9 is converted into a rotational movement acting on the flexible shaft 13, which rotational movement is A transition is made to the following of the vehicle sensor in the belt winder 12 via 13.

FIGS. 12 and 13 show an alternative to the forced guidance. In the embodiment according to FIG. 12, a push rod 46 arranged in the direction of movement of the seat fitting 33 acts as a forcible guide device, and at the upper end of this push rod, the flexible shaft is prevented from relatively rotating after passing through the seat fitting 33. Is joined to. The push rod causes movement of the pivot point at the same angle to the direction of the gravitational acceleration.

In the embodiment shown in FIG. 13, the lever 44, to which the flexible shaft 13 is connected so as not to rotate relative to the upper end, is connected to a connecting rod 47 at the other end so as to be swingable. Is rotatable about a rotation axis 42 in combination with a vehicle seat. Thus, the swing of the vehicle seat causes the movement of the lever 44 without changing the angle in the direction of the gravitational acceleration.

The present invention is not limited to the forced guidance shown in the embodiment.
Rather, as long as the lever retains its angular position in the direction of gravitational acceleration during a seat swing about a rotational axis outside the pivot point of the flexible shaft, the lever 44 will transmit in any other possible position. It can be part of a device.

14 to 17 show embodiments of the present invention. In these embodiments, the sensor lever of the sensor 15 is used.
21 is disengaged from the engagement of the control plate with the gear cut 17 when the backrest is swung completely forward rather than being adjusted within the normal tilt adjustment stroke.

In the embodiment shown in FIGS. 14 and 15, the connection with the restraint release lever for swinging the backrest is performed. For this purpose, since the restraint release lever 50 for releasing the restraint of the backrest provided with the handle 51 is connected to the restraint lever 53 via the connecting lever 52, when the restraint of the backrest is released, the connecting lever 52 is moved in the direction of arrow 59. Is raised and the restraining lever 53 swings, the front end of which is supported by the sensor lever 21, and the external lever 17 of the control plate 16 of the belt winder is moved when the sensor lever follows the sensor 15. Do not invade. After returning the backrest to the normal position, the restraint release lever 50 is again locked in the reference position, whereby the return movement of the restraint lever 53 releases the sensor lever 21 for normal operation.

Instead, according to FIGS. 16 and 17, the device for de-energizing the sensor can be adapted to a normal tilt adjustment stroke 54 and a different defined swing stroke 55. For this purpose, the belt winder 12 has a guide surface 57 along which the detection lever 56 coupled to the sensor lever 21 slides. Since this guide surface has a step 58, the sensor lever 21 is moved over the inclination adjustment process 54.
The detection lever 56 has an appropriate degree of freedom, and as a result, the sensor lever 21 functions as the
Can be engaged. When the backrest 10 is swung in the range of the swinging stroke 55, the relative rotation of the sensor 15 with respect to the belt winder 12 results in the related portion of the guide surface 57 being located in front of the detection lever 56 of the sensor lever 21. , The sensor lever 21 is prevented from swinging,
Therefore, it is fixed. Thereafter, the return swing of the backrest 10 returns to the starting position shown by the solid line in FIG. 17 again, and at this starting position, the sensor lever 21 moves the external teeth 17 of the control plate 16.
Can be engaged. The correspondence between the guide surface 57 having the stepped portion 58 and the swing stroke 55 of the backrest 10 is indicated by a broken line.

The present invention also extends to providing a belt winder including a control device which is susceptible to the influence of the vehicle on the backrest so as to be rotatable as a whole, and in this case, when the inclination of the backrest changes, the belt winder is provided. The take-up device is readjusted to a position where the vehicle-sensitive controls operate intact. For this purpose, the belt winder is connected via a flexible shaft to the backrest adjusting device, and the respective connection is designed so as not to rotate relative to each other. Consistent with the principles of the previously described embodiment, the flexible shaft 13 must be mounted on the belt winder such that the belt winder can rotate about the axis of the shaft as a fulcrum. .

Finally, it is self-evident that in all embodiments the flexible shaft 13 must be configured so as not to rotate relative to each other.

Disclosed in the foregoing description, claims and drawings,
The features of the subject matter of the invention, individually and in any combination, are important for the realization of the invention in the various embodiments.

[Brief description of the drawings]

1 is a perspective view of a backrest having a belt winder arranged so that the backrest adjustment device and the sensor follower rotate in the same direction, and FIG. 2 is an enlarged view of the sensor for the arrangement according to FIG. FIG. 3 is a side view, FIG. 3 is a front view of the sensor according to FIG. 2, FIG. 4 is a perspective view of a backrest having a belt winder arranged so that a backrest adjustment device and a sensor follower rotate in opposite directions. FIG. 5 is an enlarged side view of the sensor for the arrangement according to FIG. 4, FIG. 6 is a perspective view of a backrest with a belt winder with a flexible shaft guided at right angles to the belt winder, FIG. 6 shows an enlarged side view of the sensor for the arrangement according to FIG. 6, FIG. 8 shows a schematic view of a seat having two rotation axes for adjusting the backrest, and FIG. 9 shows a seat having a belt winder and a flexible shaft. FIG. 10 is a perspective view of the backrest adjusting device from the holding axis of the flexible shaft. FIG. 11 is a side view of a vehicle seat, FIG. 12 is an enlarged view of a transmission device for following a pivot point of a flexible shaft, FIG. 13 is an enlarged view of an object according to FIG. FIG. 14 shows another embodiment, FIG. 14 is a partial view of a backrest of a vehicle seat, FIG. 15 is an enlarged view of a device for fixing a sensor lever, FIG. 16 is a view showing a movement stroke of the backrest, FIG. The figure is an enlarged view of a guide device for fixing the sensor lever. 11,33… Seat bracket, 13… Flexible shaft, 15… Sensor, 16
…… Control plate, 17… Gear cutting part, 18 …… Sensor housing, 21 …… Sensor lever, 23 …… Control point, 24 …… Rotation axis

Claims (26)

(57) [Claims] A belt winder incorporated in a backrest of a vehicle seat to perform a detent starts to restrain a belt winding shaft when an acceleration or a deceleration acts on the belt winder, so that the influence of the vehicle is reduced. The sensor of this control device, which is easily affected by the vehicle, is provided rotatably with respect to the belt winder, and the position of the sensor is adjusted via a flexible shaft connected to the sensor housing. In a safety belt device, which is adaptable to the inclination of the backrest and the axis of rotation of the sensor housing with respect to the belt winder extends through the point of engagement of the sensor lever with the control plate hobbing, ) Is provided between the sensor housing (18) and the seat bracket (11, 33), and the sensor housing (1) is provided.
8) The safety belt device, wherein the safety belt device is coupled to the seat bracket (11, 33) so as not to rotate relative to each other. 2. A flexible shaft (13), wherein a sensor housing (18) is rotatably held by a belt winder housing.
2. The device according to claim 1, characterized in that it is mounted directly on the axis of rotation (24) to the sensor housing (18) and is coupled with the seat fitting (11, 33) so as to rotate in the same direction. Safety belt device. 3. The safety belt device according to claim 2, wherein a fitting connection (25) is provided between the sensor housing (18) and the flexible shaft (13). 4. A flexible shaft (13) is mounted on a rotatable fan-shaped piece (27), which is connected to the sensor housing (18) via a gear cut (28). The fan-shaped piece (27) and the sensor housing (18)
2. The safety according to claim 1, characterized in that the radii of the sensor housings (18) are adjusted so that the axis of rotation (24) of the sensor housing (18) extends through the control point (23) of the sensor lever (21). Belt device. 5. A sector piece (27) and a sensor housing (18).
The safety belt device according to claim 4, characterized in that interlocking gear cuts (28) are formed on the surfaces of the safety belts. 6. A flexible shaft (13) is connected to an outer surface of a sensor housing (18) formed in an arc shape, and a radius of the sensor housing (18) is set to a virtual center point of the sensor housing (18). The safety belt device according to claim 1, characterized in that the safety belt device is dimensioned such that is located at a control point (23). 7. The safety belt device according to claim 6, wherein the sensor housing (18) is connected to the connecting piece (29) for the flexible shaft (13) via a bevel gear. 8. A sensor (15) susceptible to the influence of the vehicle,
A ball-shaped housing (18) and a ball (19) which is rotatably mounted on the housing and moves with the ball (19) during engagement within the housing (18) to engage the gear plate (17) of the control plate (16). 8. The safety belt device according to claim 1, wherein the safety belt device is formed as a ball sensor having a sensor lever (21) that can be turned. 9. Two axes of rotation (31, 32) are formed for adjusting the backrest (10), and the flexible shaft (13) is connected to the part (34).
9. The device as claimed in claim 1, wherein the at least one backrest adjuster is guided substantially parallel to each of the rotational axes of the backrest and is held on the seat. Safety belt device as described. A sleeve (35) surrounding the flexible shaft (13) and rotatably supporting the flexible shaft (13) is disposed on the backrest (10), and the longitudinal axis of the sleeve has a longitudinal axis for adjusting the backrest (31). 10. The safety belt device according to claim 9, characterized in that it is oriented substantially parallel to (32). 11. The rotation axis (31, 3) of the backrest adjusting device.
11. The safety as claimed in claim 9, wherein a separate sleeve is arranged for fixing the position of the flexible shaft (13) relative to 2) and for supporting it rotatably. Belt device. 12. In a flexible shaft (13) fixedly provided on the backrest (10), the longitudinal axis of a sleeve (35) surrounding the flexible shaft (13) is aligned with the rotation axis (3) of the backrest adjusting device.
The safety belt device according to one of claims 9 to 11, characterized in that it corresponds to (1,32). 13. A sleeve (35) is arranged at a distance (A) relative to the rotation axis (31, 32) of the backrest adjusting device with respect to its longitudinal axis, and the sleeve (3) is attached to the flexible shaft (13).
The safety belt device according to claim 9, wherein the safety belt device is guided in a free arrangement up to 5). 14. The safety as claimed in claim 9, wherein the mounting of the flexible shaft (13) in the seat fitting (33) takes place on an axis of rotation (31, 32). Belt device. 15. The flexible shaft (13) is mounted on a rotating axis (3).
14. The safety belt device according to claim 13, wherein the shift is performed with respect to (1, 32). 16. The mounting of the flexible shaft (13) in the seat fitting (33) is performed on the rotation axis (31) of the backrest (10) with respect to the seating surface (40).
A safety belt device according to any one of claims 1 to 15. 17. The vehicle seat (9) is swingable about a rotation axis (42) outside a pivot point (33) of the flexible shaft (13) of the seat (9), A device (4) for converting the movement of the pivot point (33) into a rotation of the flexible shaft (13) which follows the sensor housing in the belt winder (12) during the movement.
17. The safety belt device according to claim 16, wherein (4, 45, 46, 47) is provided. 18. A flexible shaft (13) is passed through the seat fitting (33) and is connected to the lever (44) so as not to rotate relative to the lever (44). (44)
Translates at the same angle to the direction of the gravitational acceleration, whereby the flexible shaft (1) is moved by the swing angle of the seat (9).
18. The safety belt device according to claim 17, wherein 3) is rotated. 19. The safety belt device according to claim 18, wherein the lever (44) is part of a parallelogram linkage (45) coupled to the seat (9). 20. A seat bracket (3) when the lever is swung.
19. Safety belt device according to claim 18, characterized in that it is part of the push rod (46) between the movement positions of 3). 21. A lever (44) movably connected at the other end to a seat (9) and to a connecting rod (47) swingable about a rotation axis (42) for seat adjustment. 19. The safety belt device according to claim 18, wherein: 22. A device for preventing engagement of a sensor lever (21) with a gear cutting (17) of a control plate (16) during a swinging movement of a backrest (10). Safety belt device according to one of the preceding claims, characterized in that a safety belt (57) is provided. 23. A backrest (10) for the sensor lever (21).
Lever (5) that is coupled to the restraint release lever (50)
23. The safety belt device according to claim 22, wherein 3) is attached, and the restraint lever fixes the sensor lever (21) when the restraint release lever (50) is operated. 24. The sensor lever of the sensor (15) of the belt winder (12) over the swinging stroke (55) of the backrest (10) which is outside the range of the inclination adjusting stroke (54) of the backrest (10). In order to restrain (21), the belt winder (12) has a guide surface (57), and the detection lever (56) attached to the sensor lever (21) slides along this guide surface (57). Then, the guide surface (57) releases the detection lever (56) over the inclination adjustment stroke (54), and the swing stroke (55) of the backrest (10).
23. The safety belt device according to claim 22, wherein the detection lever (56) is restrained for a long time. 25. A belt winder incorporated in a backrest of a vehicle seat to perform a detent, which starts restraining a belt winding shaft when an acceleration or a deceleration is applied to the belt winder. In a safety belt device, the housing of the belt winder (12) has at least one control device which is easy to receive and the position of the belt winder can be automatically adapted to the inclination of the backrest via a transmission element. , The seat bracket (1) via the flexible shaft (13)
A safety belt device coupled to 1), characterized in that the axis of the flexible shaft (13) extends through the axis of the belt winder (12). 26. A rotation axis (24) of a belt winder rotatably provided on a backrest coincides with an axis of a flexible shaft (13), and the flexible shaft (13) is a housing of the belt winder. 26. The safety belt device according to claim 25, wherein the safety belt device is coupled so as not to relatively rotate with the safety belt device.