JPH0224356Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Field of Application of the Invention] The present invention relates to a seat belt device for protecting occupants during vehicle emergencies.

[Background technology]

In a seat belt device, one end of a webbing for restraining an occupant is generally wound up by a webbing take-up device and stored. This seatbelt device uses a retractor and a part of the webbing pulled out from the retractor inside the vehicle body, such as the center pillar, in order to save extra space and improve the appearance of the vehicle interior. There is a configuration that is stored in .

However, in some vehicles, the width of the interior of the center pillar into which the webbing is inserted is narrower than the width of the webbing, and conventionally such vehicles have not been stored in the above manner.

[Purpose of invention]

The present invention takes the above facts into account, and even if the width of the part where the webbing is inserted into the vehicle body is narrower than the width of the webbing, the present invention allows one end of the webbing to pass smoothly into the vehicle body, and is connected to a winding device etc. The object is to obtain a seat belt device in which a part of the webbing on the device side can be stored inside a vehicle body.

[Structure of the idea]

In the seat belt device according to the present invention, one end of the webbing is pulled by a take-up device disposed inside the vehicle body, and the other end of the webbing is pulled out to restrain the occupant and protect the occupant in the event of a vehicle emergency. The webbing is bent from approximately the center in the width direction and is characterized by having a guide that can be inserted along the longitudinal direction of the webbing into a hole drilled in the surface of the vehicle body.

According to the above configuration, even if the maximum widthwise length of the hole drilled in the surface of the vehicle body is shorter than the widthwise length of the webbing, the webbing can be reliably stored in the vehicle body.

[Example of idea]

FIG. 1 shows a state in which a webbing is attached to a seat belt device according to a first embodiment of the present invention.

In this seat belt device, an occupant 12 seated on a seat 10 is configured to wear webbing 14. This webbing 14 has one end fixed to the lower part of the vehicle body side wall 18 by an anchor plate 16, a middle part passing through a tongue plate 20 and a guide 24 leading into the center pillar 22, and the other end passing through a joint 26. The wire 28 is connected to the wire 28 via the wire 28. The other end of the wire 28 is wound up by a winding device 30 disposed between the roof panels of the vehicle body.

The tongue plate 20 is secured to a buckle device 34 that is erected from a tunnel portion 32 that is raised approximately at the center of the vehicle body.

Further, the guide 24 is composed of a neck portion 36 and a collar 38, as shown in FIG. A claw 40 is provided upright on the neck portion 36, and a claw hole 42 is formed in the collar 38 in correspondence with the claw 40. A long hole 43 is bored in the side surface of the center pillar 22, and the neck 36 is inserted into this long hole 43. The collar 38 is joined to the neck 36 from the opposite side of the panel, and the claw 40 is inserted into the claw hole 42. The guide 24 is bonded to the center pillar 22 by using the guide 24. A hole 44 formed in the center of the guide 24 has a substantially triangular shape, and the circumferential length of the hole 44 is approximately equal to the width of the webbing 14.

The width A of this center pillar 22 is the webbing 1
As shown in FIG. 3, the webbing is bent and overlapped at approximately the center in the width direction. This webbing is inserted into the hole 44 of the guide 24 in the overlaid state, that is, with its length in the width direction being approximately half that before being overlaid.

Next, the tip of the webbing 14 that has passed through the center pillar 22 is bent in half in the same manner as described above and attached to the joint 26, as shown in FIG. A mouth portion 46 is formed in this joint 26, and the webbing 14 is held between the mouth portion 46 and fastened with a bolt 48. A locking ring 49 is provided upright on the opposite side of the mouth 46 of the joint 26, and the wire 2 is connected to this locking ring 49.
8 is locked at one end.

Further, the other end of the wire 28 is wound up by a winding device 30 shown in FIGS. 5 and 6. In FIG. 5, the winding drum 50, the supporting shaft plate 54 that pivotally supports the lock plate 52, and the locking plate 58 of the weight 56 are omitted.

The winding drum 50 is formed with a guide groove for winding the wire in an orderly manner, and the wire can be completely wound in one stage without overlapping. Ratchet wheels 60 are fixed to both end faces of the winding drum 50 for engagement with the lock plate 52. The lock plate 52 is
The counterclockwise rotation in FIG. 6 is prevented by the head of a pin 62 that passes through the lead weight 56. This pin 62 is loosely inserted into a hole bored in the locking plate 58, and is locked to the locking plate 58 by having its head larger than the diameter of this hole. A shaft 64 of the winding drum 50 and protrusions 66 formed at both ends of the lock plate 52 are pivotally supported by the support shaft plate 54. A clockwork spring (not shown) is attached to this shaft 64, and the wire 28 can be completely wound by its elastic force. Next, the operation of the first embodiment configured as described above will be explained.

Before the occupant wears the webbing, the winding device 30 winds up the wire 28 using the elastic force of a mainspring spring.

The occupant pulls the webbing intermediate portion against this elastic force, and the tongue plate 20 is folded into the buckling device 3.
4, the webbing becomes attached. When pulling the webbing intermediate portion, the wire 28 is unwound from the take-up device, and the webbing 14 is pulled out from the guide 24 into the vehicle interior in a state where the webbing 14 is overlapped in the width direction. The pulled-out webbing 14 is kept straight in the width direction by the elastic force of the webbing itself, which tends to straighten in the width direction, and because the webbing 14 is straight in the width direction at the tongue plate 20. A restoring force that tries to restore the shape is transmitted to the guide 24 side, and the shape gradually becomes flat as it moves away from the guide 24 (see FIG. 3). Therefore, webbing 1
4 will come into contact with the occupant without overlapping. In this first embodiment, the shape of the hole 44 of the guide 24 is approximately triangular, and the curvature of the webbing central portion is ensured to a certain extent, so that the overlapped webbing 14 can be pulled out from the guide 24. It immediately tries to flatten.

When the vehicle is normally running, the ratchet wheel 60 is not locked by the lock plate 52, and even if the occupant moves slightly, the webbing 14 is pulled out accordingly. Therefore, the occupant does not feel uncomfortable pressure from the webbing 14.

Next, in a vehicle emergency, when the acceleration of the vehicle suddenly changes, the inertia of the weight 56 of the winding device 30 causes the weight 56 and the pin 62 to tilt, and the head of the pin 62 tilts the weight 56 and the pin 62. Lock plate 52 rotates clockwise in FIG. 6 and engages the pawl on ratchet wheel 60. This prevents the winding drum 50 from rotating in the wire unwinding direction, thereby preventing the webbing from being pulled out. Therefore, the occupant is restrained, and the safety of the occupant is improved.

Next, FIG. 7 shows a cross section of the webbing 14 according to the second embodiment of the present invention.
are lined up and sewn.

Therefore, as shown in FIG.
Even if the webbing is narrow, the fabrics 72 and 74 do not bend along the fold lines in the longitudinal direction, so the webbing is easily overlapped and inserted into the pillar.

In the above embodiment, by using a webbing having a certain degree of rigidity in the width direction, it is possible to immediately flatten the webbing pulled out from the guide.

Further, the winding device may be disposed not between the panels of the roof but between the panels below the center pillar.

One end of the webbing may be directly wound up by a winding device without being connected to a wire.

Furthermore, the structure of the winding device may be any structure as long as it can prevent the webbing from being pulled out in the event of a vehicle emergency. Further, the lock mechanism may have a structure that clamps the webbing and prevents the webbing from being pulled out, and in this case, the lock mechanism may be disposed near the guide.

[Effect of idea]

In the seat belt device according to the present invention, a guide for inserting the webbing, which is bent from approximately the center in the width direction along the longitudinal direction, is provided in a hole drilled on the surface of the vehicle body. Even if the width of the part of the car body where the webbing can be inserted is narrower than the width of the webbing, one end of the webbing can be passed smoothly into the car body, and the part of the webbing on the side of the take-up device can be easily inserted into the car body. It has the excellent effect of being able to be stored inside the vehicle body.

[Brief explanation of the drawing]

FIG. 1 is a partially sectional front view showing the webbing attached state of the seat belt device according to the first embodiment of the present invention, FIG. 2 is an exploded perspective view of the guide shown in FIG. 1, and FIG.
The figure is a perspective view showing the state of the webbing near the guide in Figure 1, Figure 4 is a partially sectional front view of the joint in Figure 1, and Figure 5 is a partially omitted perspective view showing the winding device in Figure 1. 6 is a side view of the winding device shown in FIG. 1, FIG. 7 is a cross-sectional view of the webbing showing the second embodiment of the present invention, and FIG. 8 is a side view of the webbing shown in FIG. 7 at the guide position. FIG. 3 is a cross-sectional view showing the state. 24...Guide, 44, 76...Hole.

Claims (1)

[Scope of utility model registration request] In a seat belt device where one end of the webbing is pulled by a retractor installed inside the vehicle body and the other end of the webbing is pulled out to restrain the occupant and protect the occupant in the event of a vehicle emergency, the seatbelt device is bent from approximately the center in the width direction. A seat belt device characterized in that a guide through which a state webbing can be inserted along its longitudinal direction is disposed in a hole bored in a surface of a vehicle body.