JPH0214219B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a sash guide device used in a seat belt device for protecting an occupant in a vehicle emergency.

In the seat belt device, the actual anchor point can be changed by attaching the webbing between the occupant restraint section and the take-up device that winds up the occupant restraint webbing to the sash guide device.

This suspension guide device has a guide ring attached to the tip of the suspension guide main body, one end of which is fixed to the vehicle body, and the middle part of the webbing is inserted through this guide ring.The guide ring is used as a substantial anchor point to connect the webbing to the passenger. It is designed to be installed properly and improve safety in vehicle emergencies.

These sash guide devices are all fixed to the vehicle body, and are designed to ensure that the large tension generated in the webbing is supported by the vehicle body in the event of a vehicle emergency.

However, in vehicles with a gently sloping roof at the rear of the vehicle (called a first back), the pillars (quarter pillars) that support the rear of the roof are relatively thin, so when attaching the main body of the suspension guide to the quarter pillars, In order to ensure the strength of the quarter pillar, it is necessary to install many reinforcing materials inside the quarter pillar.
This leads to increased costs and increased vehicle weight.

In consideration of the above facts, the present invention can reliably withstand the webbing tension that occurs during normal vehicle operation and secures an anchor point during normal vehicle operation.
It is an object of the present invention to obtain a sash guide device that can reliably detach from a vehicle body and change an anchor point in the event of a vehicle emergency.

In the sash guide device according to the present invention, a through hole and a slit that communicates the through hole with the outside are formed in the sash guide body to which a guide ring for webbing insertion is attached, and a mounting bolt is screwed into the vehicle body through the through hole. is securely attached to the vehicle body during normal vehicle operation to form an anchor point, and in a vehicle emergency, the sash guide body moves relative to the mounting bolt due to the large tension generated in the webbing, and this mounting bolt passes through the slit. The main body of the sash guide can be removed from the vehicle body and the anchor point can be changed.

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 shows a structure in which a sash guide device 10 according to an embodiment of the present invention is attached to a quarter pillar 14 that connects the rear part of a vehicle body side wall 12 and the rear end of a roof (not shown).

A winding device 16 is attached to the vehicle rear end of the side wall 12, and winds up one end of the occupant restraint webbing 18. The other end of this webbing 18 is connected to the winding device 16 at the middle part of the quarter pillar 14.
After passing through the slip joint 20 installed between the sash guide device 10 and the sash guide device 10, it passes through the sash guide device 10 and is extended toward the front of the vehicle, reaching a mounting portion for an occupant (not shown).

In the winding device 16, a winding shaft (not shown) is pivotally supported by a frame 22 fixed to the side wall 12, and this winding shaft winds the webbing 18 under a predetermined biasing force by a mainspring spring winding device 24. However, an inertia lock mechanism (not shown) instantly stops the webbing 18 from being pulled out in the event of a vehicle emergency.

In the slip joint 20, a webbing insertion ring 26 is fixed to the quarter pillar 14, and the webbing 18 can freely pass through the ring 26. This slip joint 20 is used for webbing 18 in case of vehicle emergency.
It is adapted to form an anchor point to the quarter pillar 14 of.

The sash guide device 10 will be explained in detail with reference to FIGS. 2 and 3. This sash guide device 10 has a guide ring 28 and a sash guide main body 30.

The guide ring 28 is an iron round bar whose axis is bent into an oval shape and has a webbing insertion hole 32 formed therein.

On the other hand, the sash guide main body 30 is manufactured from a thin steel plate, and has a through hole 36 formed approximately in the center thereof into which a mounting bolt 34 is inserted. This through hole 36 is communicated with the outside through a slit 38. The width dimension of this slit 38 is the width of the mounting bolt 34.
It is preferable that the diameter of the slit 38 is slightly smaller than the outer diameter of the threaded portion of the slit 38, and by changing the width of the slit 38, the load upon detachment of the sash guide device 10 can be adjusted. Further, the axis 40 of this slit 38 is directed upward and rearward of the vehicle when it is attached to the quarter pillar 14.

Quarter pillar 1 is attached to the sash guide body 30.
4, it has a bent portion 42 on the vehicle front side relative to the mounting bolt 34, and an extension portion 44 protrudes toward the interior of the vehicle. The distal end of the extension 44 surrounds a portion of the guide ring 28, thereby ensuring that the guide ring 28 is supported by the sash guide body 30. Guide ring 2
In order to securely attach the extension part 8 and the extension part 44, fixing means such as welding may be applied.

This allows the guide ring 28 and the slit 38 to
and are placed on opposite sides of each other with the bending portion 42 interposed therebetween.

An abutment plate 46 bent at right angles extends from the sash guide main body 30, and this abutment plate 46
is in close contact with the surface of the quarter pillar 14.
This prevents the sash guide body 30 from inadvertently rotating around the mounting bolt 34 during normal vehicle operation.

The operating state of the sash guide device 10 of this embodiment configured as described above will be explained.

When attaching to the vehicle body, the mounting bolt 34 is passed through the through hole 36 of the sash guide body 30 through which the webbing 18 is inserted into the guide ring 28 in advance, and the mounting bolt 34 is inserted into the quarter pillar 1.
4, assembly of the sash guide device 10 is completed.

During normal vehicle operation, the guide ring 28 forms an anchor point for the webbing 18 that acts as shoulder webbing, and transfers the webbing tension generated by the winding force of the winding device 16, changes in driving posture of the occupant, etc. to the quarter pillar 14. The webbing is supported so that the occupant can wear the webbing appropriately. The sash guide main body 30 is in close contact with the quarter pillar 14 by the tightening force of the mounting bolt 34, and the abutting plate 46 is also in close contact with the surface of the quarter pillar 14, so the sash guide main body 30 will not rotate around the mounting bolt 34 inadvertently. The anchor point will not be changed by pulling force or the like by the occupant.

When the vehicle is in an emergency situation such as a collision, the occupant moves in the direction of the collision due to inertia, and a large tension is generated in the longitudinal direction of the webbing 18, as shown by arrow A in FIG. By being supported by the winding device 16, the sash guide device 10 is pulled forward and downward in the vehicle as shown by arrow F in FIG.

Since this load F is extremely large, the sash guide main body 30 is slightly rotated around the mounting bolt 34 in the direction of arrow B, and the slit axis 40 approaches the direction of the load F.

At the same time, the sash guide main body 30 is loaded with a load F.
The mounting bolt 34 moves relative to the slit 38, and by passing through the slit 38, the sash guide body 30 is attached to the quarter pillar 14.
depart from.

Since the slit 38 has a width smaller than the outer diameter of the mounting bolt 34, the mounting bolt 3
4 moves relative to the sash guide main body 30 while pushing and expanding the slit 38, and when the load F reaches a preset value, the sash guide device 10 separates.

In particular, since the extension part 44 of the sash guide main body 30 is placed further forward of the vehicle than the mounting bolt 34, the sash guide main body 30 is less deformed than when it is arranged further back of the vehicle than the mounting bolt 34, and the slit axis can be reliably aligned. 40 can be arranged in the load F direction.

When the sash guide device 10 is detached from the mounting bolt 34 and the quarter pillar 14, the webbing 18 is supported by the slip joint 20 to the quarter pillar 14. Since the slip joint 20 is fixed to the quarter pillar 14, the webbing 18 is supported by the slip joint 20. The large tension generated in 18 is reliably supported by the vehicle body, ensuring the safety of the occupants.

Since the large tension generated in the webbing 18 is transmitted to the quarter pillar 14 via the slip joint 20, the slip joint 2
The strength of the quarter pillar 14 can be lowered compared to a case where the webbing tension is supported to the quarter pillar 14 by a portion of the mounting bolt 34 disposed at a portion farther from the vehicle body side wall 12 than zero.

In addition, the sash guide device 10 is attached to the mounting bolt 34.
After being removed from the quarter pillar 14, only the mounting bolts 34 remain on the quarter pillar 14, and no other sharp protrusions remain on the quarter pillar 14, resulting in high safety.

Although the above embodiment shows a structure in which the present invention is applied to a sash guide device for supporting shoulder webbing to a quarter pillar, the present invention also applies to other webbing such as lap webbing to other parts of the vehicle body such as the vehicle roof. Naturally, it can also be applied to a locking structure.

As explained above, in the sash guide device according to the present invention, since the sash guide body is detachably attached to the vehicle body, it has an excellent effect that a temporary anchor point can be easily obtained during normal vehicle operation.

[Brief explanation of drawings]

Fig. 1 is a perspective view showing an embodiment of the sash guide device according to the present invention as viewed from the inside of the vehicle in the lateral direction of the vehicle, Fig. 2 is a perspective view showing the state in which the sash guide device is attached to a quarter pillar, and Fig. 3 is a perspective view of the sash guide device. FIG. 3 is a front view of the device. 10...Sash guide device, 14...Quarter pillar, 18...Webbing, 28...Guide ring,
30...Sash guide body, 34...Mounting bolt,
36...Through hole, 38...Slit, 46...Abutting plate.

Claims (1)

[Claims] 1. A guide ring for webbing insertion, and a sash guide body to which this guide ring is attached and which is provided with a through hole for a mounting bolt to be screwed into the vehicle body. A sash guide device characterized in that a slit is formed to communicate the mounting bolt through hole with the outside, and the sash guide body is detachable from the vehicle body together with the guide ring, and is used for passing the bolt in case of a vehicle emergency. 2. The sash guide device according to claim 1, wherein the width of the slit is smaller than the outer diameter of the mounting bolt. 3. The sash guide device according to claim 1, wherein the slit is arranged on the opposite side of the webbing insertion portion of the guide ring with respect to the mounting bolt. 4. The sash guide device according to claim 1, wherein the sash guide body is formed from a metal plate. 5. The sash guide device according to claim 4, wherein the attachment portion of the guide ring is located further forward of the vehicle than the attachment portion to the vehicle body by the attachment bolt. 6. The sash guide device according to claim 4, wherein a portion that contacts the vehicle body protrudes from a part of the sash guide body to prevent rotation of the sash guide body during normal vehicle operation. .