JPH0447008Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a webbing locking structure for attaching webbing to an optimal position for a seated occupant.

[Prior Art and Problems to be Solved by the Invention] Currently, an automatic seat belt device has been proposed that automatically attaches webbing after an occupant is seated.

This automatic seat belt device has a structure that locks one end of the webbing to the door frame and allows the webbing to be installed and uninstalled by opening and closing the door (hereinafter referred to as the door frame structure), and a structure that is attached near the roof side of the vehicle. There is a structure (hereinafter referred to as a guide rail structure) in which one end of the webbing is moved in the longitudinal direction of the vehicle along a guide rail.

In either case, when the webbing is attached, one end of the webbing is placed near the shoulder position of the occupant, so that the occupant can be restrained by the intermediate portion of the webbing. Further, the other side of the webbing is wound onto a winding device installed inside the center console.

Therefore, it is preferable that the webbing locking portion near the shoulder position of the occupant can adjust the attachment angle of the webbing toward the occupant depending on the physique of the occupant or the position of the seat. , disclosed in Utility Model Application No. 58-73260.

However, if the webbing locking portion is made rotatable with respect to the vehicle body, it is necessary to provide a rotation limiting means for restricting the rotation of the webbing locking portion in addition to a mechanism for making the webbing locking portion rotatable. Therefore, there are problems in that the number of parts is large, assembly is complicated, and workability is reduced.

Further, there is a demand to be able to easily adjust the rotation angle of the locking portion of the webbing with one hand.

In consideration of the above facts, the present invention aims to provide a webbing locking structure that is easy to assemble and allows the webbing locking angle to be easily adjusted.

[Means and effects for solving the problem] A first plate to which a part of the webbing is locked, one end attached to the vehicle body and the other end attached to the first plate, and the first plate with the other end as the center. a second plate that is rotatable relative to the first plate; a protrusion formed on one of the first plate or the second plate; and a protrusion that passes through the other of the first plate or the second plate and is on the rotational movement locus of the protrusion. 2
a restriction means for restricting relative rotation between the first plate and the second plate, the restriction means having a protrusion disposed at a point;
The first plate includes a plurality of recesses provided in the protrusion along the relative rotational direction of the first plate and the second plate, and a protrusion that selectively enters the recess attached to the protrusion. It is characterized by having a locking means for locking the second plate, and a relative rotation angle adjusting means for adjusting the relative rotation angle between the first plate and the second plate.

Therefore, the convex portion selectively enters the concave portion, and the first plate and the second plate are adjusted to a predetermined relative rotation angle. Therefore, even when occupants of different physiques are seated, the webbing can be optimally attached.

In addition, a protrusion is formed on one of the first plate or the second plate, and this protrusion is used for fixing the locking means, and a new member for fixing the locking means is not required. The structure is simplified and ease of assembly is improved.

[Example] Fig. 1 shows an automatic seat belt device 10 to which the webbing locking structure according to the present invention is applied.
It is shown.

A guide rail 16 is attached near the roof side 14 of the vehicle 12, and its front end is disposed along the front pillar 18.

Further, the end portion of the guide rail 16 on the vehicle rear side is bent along the center pillar 19 at a substantially right angle.

As shown in FIG. 2, a groove 20 is formed inside the guide rail 16. The bottom of the groove 20 is widened, and the slider 2 which is the second plate
2 heads 24 are arranged. Further, a tape storage groove 26 is formed in the middle part of the groove 20,
A flexible tape 28 is accommodated.

The tip of this flexible tape 28 is attached to the slider 2
The rear end portion is wound onto a take-up reel 30 which is rotated by a drive means (not shown) disposed below the center pillar 19.

Note that this take-up reel 30 and guide rail 16
A tape guide cover 32 is disposed between the tape guide cover 32 and the flexible tape 28 to pass through the tape guide cover 32.

A female thread 34 is provided in the middle portion of the slider 22, and an anchor plate 38, which is a first plate, is pivotally supported via a stepped bolt 36. Note that a spacer 42 is interposed between the outer periphery of the stepped bolt 36 and a circular hole 40 provided in the anchor plate 38 to facilitate relative rotation between the slider 22 and the anchor plate 38.

A slit hole 44 is provided in the anchor plate 38, and one end of a webbing 46 is locked therein.

The other end of the webbing 46 is wound up by a winding device 50 attached to the floor surface of the vehicle body near a center console 48 disposed in the center of the vehicle.

This winding device 50 is equipped with an inertia lock mechanism that senses a vehicle emergency using an acceleration sensor and instantly prevents the webbing 46 from being pulled out.

Here, when the take-up reel 30 rotates forward due to the driving force of the driving means, a tensile force is applied to the flexible tape 28 within the tape guide cover 32, and the slider 22 moves toward the rear side of the vehicle along with the flexible tape 28. The occupant 54 who has moved and is seated on the seat 52 can wear the webbing.

Further, when the take-up reel 30 is reversed by the driving force of the driving means, compressive force is applied to the flexible tape 28 within the tape guide cover 32, and the slider 22 moves toward the front of the vehicle.

This creates a space between the webbing and the seat where the user can get on and off the vehicle.

Here, when an occupant of a different physique is seated on the seat 52, the automatic seat belt device 10 according to this embodiment is designed to change the relative angle between the slider 22 and the anchor plate 38. Explain the structure.

A radial protrusion 56 is integrally formed on a portion of the outer periphery of the slider 22 . This protrusion 56 corresponds to a rectangular hole 58 provided adjacent to the slit hole 44 of the anchor plate 38.

Around the rotation axis of the anchor plate 38, there are two rivets 60A forming a protrusion.
60B is installed. Rivet 60A,
60B has a stepped shape composed of a small diameter part 62 and a large diameter part 64, and the small diameter part 62 is inserted into the anchor plate 38 from the end surface facing the slider 22.

As a result, the large diameter portion 64 is arranged at two points on the locus of rotation of the protrusion 56 about the stepped bolt 36, thereby restricting the rotation of the protrusion 56.
The rivets 60A, 60B and the protrusion 56 constitute a limiting means.

Both ends of a leaf spring 66 serving as a locking means are attached to the small diameter portions 62 of the rivets 60A, 60B.

The plate spring 66 as a locking means has a substantially U-shaped planar shape, and the middle portion thereof is a locking portion 68 projecting toward the rectangular hole 58 .

An arc-shaped convex portion 70 is formed on the locking portion 68 and corresponds to the concave portions 72A and 72B formed on the protrusion 56. The recesses 72A and 72B are formed at two locations on the protrusion 56, and the anchor plate 38
rotates around the stepped bolt 36, the protrusion 70
selectively enters the concave portion 72A or 72B, and the elastic force of the convex portion 70 allows the anchor plate 38 to be locked to the slider 22 at a predetermined angle. Note that, as shown in FIG.
Preferably, the sides of 2A and 72B are sloped. The recesses 72A, 72B and the leaf spring 66 are
This constitutes relative rotation angle adjusting means.

As a result, the anchor plate 38 and the slider 2
The locked state with 2 is designed to prevent wobbling.

The operation of this embodiment will be explained below.

When the occupant 54 is seated on the seat 52, there is a space between the webbing 46 and the seat 52 in which the occupant 54 can ride, and the occupant 54 can easily sit there.

Here, when the take-up reel 30 rotates forward due to the driving force of the driving means, a tensile force is applied to the flexible tape 28 within the tape guide cover 32, and the flexible tape 28
moves toward the rear of the vehicle along the guide rail 16.

Along with this, the webbing 46 locked to the slider 22 moves, allowing the occupant 54 to wear the webbing.

Here, if the vehicle falls into an emergency state, this is detected by the acceleration sensor, and pulling out of the webbing 46 from the take-up device 50 is instantly prevented, making it possible to place the occupant 54 in a restrained state.

Furthermore, when the occupant 54 releases the webbing attachment, the take-up reel 30 is driven by the driving force of the driving means.
By reversing the , one end of the webbing 46 moves forward of the guide rail 16 as the flexible tape 28 moves forward of the vehicle due to compressive force being applied to the flexible tape 28 within the tape guide cover 32 . , the occupants can exit the vehicle.

Next, when an occupant of a different physique sits on this seat 52 and attaches the webbing 46, the automatic seat belt device 10 according to this embodiment
The locking angle of the anchor plate 38 relative to the slider 22 can be changed.

This is because the anchor plate 38 and the slider 22 are engaged with the convex portion 70 and the concave portions 72A and 72B, so that their relative angles are maintained. Since the recesses 72A and 72B are provided at two locations, when the anchor plate 38 is rotated around the stepped bolt 36, the locking portion 68 of the leaf spring 66 is elastically deformed and comes out of the recess 72A. From this state, when it is matched with another recess 72B, its shape is restored and it is locked again, and is held at an angle different from the above-mentioned relative angle.

Thereby, the webbing 46 can be attached to an optimal position for occupants of different physiques.

Here, when the protrusion 70 is engaged with the recess 72A or 72B, the anchor plate 38 is supported by the elastic force of the protrusion 70 to the recess 72A or 72B, so it can be held securely without wobbling. .

Furthermore, since the rivets 60A and 60B are used in combination as a stopper when the anchor plate 38 overswings and for attaching the leaf spring 66, the number of parts is reduced and assembly work efficiency is improved.

In this embodiment, the webbing locking structure of the present invention was applied to an automatic seat belt device having a guide rail structure, but it can also be applied to a door frame structure. Furthermore, the present invention may be applied to a so-called three-point seat belt device that is commonly used at present.

[Effect of the invention] With the above configuration, according to the invention,
This has the excellent effect of providing a webbing locking structure that is easy to assemble and allows the webbing locking angle to be easily adjusted.

[Brief explanation of the drawing]

Fig. 1 is a front view of an automatic seat belt device to which the webbing locking structure of the present invention is applied, as seen from the side of the vehicle, Fig. 2 is a sectional view taken along the - line in Fig. 1, and Fig. 3 is a slider and FIG. 4 is an exploded perspective view of FIG. 3, and FIG. 5 is a cross-sectional view showing a state in which the protrusion and recess are engaged. 10... Automatic seat belt device, 2
2...Slider, 38...Anchor plate, 46
...Webbing, 56...Protrusion, 60A, 60
B... Rivet, 66... Leaf spring, 70... Convex portion, 72A, 72B... Concave portion.

Claims (1)

[Claims for Utility Model Registration] A first plate to which a part of webbing is fixed; one end attached to the vehicle body and the other end attached to the first plate; a second plate that is relatively rotatable; a protrusion formed on one of the first plate or the second plate; a protrusion disposed at a point; a limiting means for restricting relative rotation between the first plate and the second plate; and a limiting means provided on the protrusion along a direction of relative rotation between the first plate and the second plate. a first plate and a locking means having a plurality of concave portions attached to the protrusion and selectively entering the concave portions and locking the first plate and the second plate; A webbing locking structure comprising: a relative rotation angle adjustment means that allows adjustment of the relative rotation angle with the second plate.