JPS581385Y2 - Passive belt device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a passive belt device with a simple structure that uses a mechanical or electrical drive mechanism to shift the belt in response to the opening and closing of a door.

In conventional passive belts of this kind, when the belt is transferred in response to the opening and closing of a door, the mechanical drive including the width amplifying mechanism is generally transferred using an electric drive means such as a motor. For example, a drag wire or rack wire driven by a motor, or a lifting tape connected to the width increasing mechanism is provided, so an increase in the number of parts for the entire mechanism and disadvantages in terms of cost can be avoided. There wasn't.

For this reason, the inventor of the present invention has been considering simplifying the mechanism for some time, and as part of the study, he was testing the possibility of eliminating the drive means, and found that when the passenger gets in and out of the vehicle, the door cannot be opened or closed. , carried out with relatively sudden force,
It was discovered that the actuation is often performed with a relatively strong force, especially at the beginning of the opening operation or the beginning of the closing operation of an opened door.Based on this knowledge, the driving means is used for the actual belt transfer operation. I experienced that this was not particularly required.

In other words, the present invention was obtained based on the inventor's knowledge based on his practical experience, and has been developed to completely eliminate mechanical or electrical drive means, which were conventionally considered to be necessary components for belt transfer. The purpose of this is to transfer the belt only by opening and closing the belt.

The elimination of such a drive means is not simply a matter of omitting the conventional drive mechanism; it is something that would not have been expected in the conventional wisdom, and it is truly surprising that the present inventor discovered this through actual experience. This is a true fact.

Hereinafter, specific details of the present invention will be explained with further reference to the accompanying drawings.

1 and 2 illustrate an example of the passive belt device of the present invention, in which a shoulder belt extends diagonally downward from the door 2 side to the center of the vehicle 1, and a shoulder belt extends from the center of the vehicle 1 to the door 2.
A continuous belt 4 is shown that forms a continuous and integral part with a waist belt that extends down the side.

One end of this continuous belt 4 on the shoulder belt side is attached to an anchor buckle 6 attached to the upper part of the open side of the door 2 via a tongue γ so that it can be released in an emergency, and the other end is inserted into an intermediate connecting ring 8. The IJ is folded back to become a waist belt, and the end is attached to the lower part of the open side of the door 2.
It can be pulled out and rolled up into the L-roughter 5 (it is wrapped around and housed in the rafter 5).

Normally, this retractor 5 wraps around the belt so that it can be pulled out freely and does not restrict the movement of the occupant, but in the event of a collision where sudden acceleration/deceleration occurs, or when the car tilts ( This is a well-known emergency lock retractor that has the function of automatically locking the belt and restraining the occupant based on belt withdrawal inertia or vehicle body sensing.

However, even if the winding device does not have such an automatic emergency locking mechanism and can be pulled out and rewound freely, it can be pulled out when the door is open, and when the door is closed, it can be pulled out. It is sufficient that the retractor is stopped and locked, and the retractor can be freely pulled out when the door is opened using the well-known emergency lock retractor, but becomes an emergency lock type retractor when the door is closed. It is also suitable to configure.

The structure in which the door can be freely pulled out when the door is opened and is in a locked state or an emergency lock type when the door is closed is a structure separately proposed by the present applicant, for example, the retractor 5 is provided with a suppressing pin 18, etc., while the vehicle 1 When the abutment plate 11 is placed on the vehicle body side and the pin 18 abuts on the abutment plate 11, the IJ (not shown)
A configuration is used in which a locking lever inside the tractor engages with a ratchet wheel or the like to prevent free withdrawal.

On the other hand, a retractable belt 9 is provided with one end fixed to the connecting ring 8 at an intermediate position of the continuous belt 4 by sewing or the like, and the other end of the retractable belt 9 is attached to a guide device 10 installed on the side of the seat 3 on the center side of the vehicle. It is pulled out through the winding prevention device 12 disposed at the bottom of the seat 3, and then wrapped around and stored in the IJ l-rafter 11 equipped with the above-mentioned well-known emergency locking mechanism at the bottom of the seat.

Note that the belt winding force of this retractor 11 is usually
Compared to the IJ I-rafter 5c at the lower part of the door opening side, it is preferable to slightly reduce the winding force in view of the operation of the passive belt in the present invention.

Further, the continuous belt 4 is provided with a stopper 4a sewn or movable between the connecting ring 8 and the retractor 5 (here, a stopper 4a for preventing the connecting ring 8 from slipping off), and a stopper 4a is sewn or movably provided between the connecting ring 8 and the retractor 5. 6 (here, it passes through the loop of a hanger 16 for lifting a belt, which is slidably supported on a guide rail 15 to be described later, so that the continuous belt 4 can be transferred by sliding of the hanger 16. .

As shown in the illustrated example, the hanger 16 is attached to the slider 16a+z by an arm or the like as appropriate, and is attached to the guide groove 15a of the guide rail 15 provided along the inner surface of the roof side panel 13 and front pillar 14 of the vehicle 1. The slider 16a is inserted inside.

f, f, the guide groove 15a of the guide rail 15 is the slider 1
Usually, Teflon (registered trademark) is used to withstand friction with 6a.
, coated with polyurethane resin, etc.

Further, the shape of the guide groove 15a is determined depending on the relationship with the slider 16a. For example, if the slider 16a is a square prism,
As various types are adopted, such as spherical, cylindrical, and roller bearing types, the shapes are adapted to each type.

Note that the hanger can also be attached using the aforementioned arm (not limited to this, but also a ball joint, a lobe, a string, etc.).

The passive belt of the present invention is constructed as described above, and its operation will be explained next. First, when the door 2 is closed, the slider 16a is located at the rear end side of the guide rail 15, and the continuous belt 4 The end on the waist belt side is wrapped around the retractor 5.

When the door is opened in this state, the continuous belt 4 connected between the anchor 6 and the retractor 5 is pulled outward in response to the opening of the door 2, and the position of the connecting ring 8 is shifted outward. .

Therefore, the retraction belt 9 on the vehicle center side is pulled by the connecting ring 8 and pulled out, and at the same time, one end of the continuous belt 4 is also pulled out from the lower glue tractor 5 on the door opening side.

However, at this time, when the door 2 is opened, tension is applied to the shoulder belt, and the shoulder belt is stretched so that it is at its shortest length, and the slider 16a that suspends the hanger 16 is moved when the door 2 is opened. It automatically slides from the rear position to the front within the guide rail 15 without requiring any installation or drive source, and the shoulder belt side is lifted up by the hanger 16 and guided forward and hung on the front upper part of the seat 3. is passed.

As a result, the gap between the seat 3 and the shoulder belt widens, making getting on and off the vehicle much easier.

Next, in the process of closing the door from the open position, the shoulder belt is about to be stretched over the shortest distance by the retracting spring force of the beam tractor 5, which is the opposite of the opening process (this slider 16a moves the guide rail 15 from the front position to the rear). slide to.

Therefore, the waste belt automatically fits the body of the occupant, and at the same time, the waist belt also restrains the occupant by the force of the retractor 5's spring.

At this time, the retraction belt 9 is wound around the retractor 11.

The stopper 4a prevents the connecting ring 8 from sliding downward when the door is opened.

In this way, the occupant can be automatically restrained and released without using any electrical or mechanical drive mechanism in response to opening and closing of the door.

As described above, according to the passive belt of the present invention, the slider of the hanger automatically and easily slides within the guide rail according to the opening and closing of the door, and when the door is opened, it is lifted forward and upward, making it easier to get on and off. Compared to various conventional passive belt devices, it does not require any mechanical or electrical drive mechanism to slide the hanger, and has an extremely simple configuration.
Not only can it be manufactured at low cost, but since it does not have a complicated mechanism, it can operate evenly and reliably.

[Brief explanation of the drawing]

1 and 2 are perspective views of the passive belt device of the present invention, with FIG. 1 showing the door when it is open and FIG. 2 showing the door when it is closed. FIG. 3 is a partially sectional side view showing an example of how the hanger is attached. 1... Vehicle, 2... Door, 3...
... Sheet, 4, ... Continuous belt, 4a ... Stopper, 5 ... Retractor -16 ...
・Anchor 8...Connection ring, 9...
- Retraction belt, 11... Emergency lock retractor - 13... Roof side panel, 14 Front pillar 15... Guide rail, 16-...
···Hanger.

Claims (1)

[Scope of Claim for Utility Model Registration] ■ Attached to the lower part of the open side of the door 2, one end pulled out from the tractor 5, wrapped so that it can be rolled in, and the other end is the stopper 4.
The shoulder I is inserted into the connecting ring 8 held by the a & folded back and is anchored to the anchor 6 on the upper part of the open side of the door 2.
The next continuous belt 4 and the emergency lock retractor 11 (a retraction belt whose one end extends to the center side of the vehicle 1 of the seat 3 and is wound so that it can be pulled out and retracted, and whose other end is fixed to the connection ring 8) 9, the portion of the continuous belt 4 between the connecting ring 8 and the anchor 6 is mechanically or A passive belt device characterized in that it is slidably inserted and supported by a hanger 16 that is slidably supported only by the opening/closing movement of the door without relying on electrical drive. 2. The continuous belt 4 is on the door opening side. The passive belt device according to claim 1, which is attached to the upper part by an anchor buckle 6 and a tongue 7 so as to be able to be released in an emergency. 9. The passive belt device according to claim 1, which is slightly smaller than the retracting force of the emergency lock retractor 11 of 4. The passive belt device according to claim 1 of the utility model registration claim, which is a retractor that is emergency locked when the vehicle body changes due to deceleration.5 The retractor 5 of the continuous belt 4 can be freely pulled out when the door is opened, but cannot be pulled out when the door is closed. The passive belt device according to claim 2 of the utility model registration claim, which is configured to be automatically locked.6 The IJ l-rafter 5 of the continuous belt 4 can be freely pulled out when the door is opened, and automatically locked when the door is closed. The passive belt device according to claim 1, which is configured to be locked by sudden movement of the vehicle body or the belt.