JPS581386Y2 - Passive belt device - Google Patents

Description

[Detailed description of the invention] The present invention relates to a passive belt that automatically releases and restrains occupants by opening and closing a door. The present invention relates to a passive belt device that simultaneously and quickly retracts the belts to make it easier for passengers to get on and off the vehicle.

Seatbelts are widely used in automobiles to ensure the safety of occupants in the event of a collision, etc., but conventional seatbelts rely on the occupant's will to put them on or take them off, and are cumbersome to operate. The reality is that they are generally used infrequently and do not effectively ensure safety.

Therefore, in order to eliminate this inconvenience, passive belt devices have been proposed that automatically restrain and release occupants in conjunction with door opening and closing.

In particular, in recent years, these passive belt devices have been further improved to increase the opening/closing movement of the door, and a response amplification system that quickly retracts the belt with the door partially open without having to fully open the door. There has been a gradual increase in the number of devices that incorporate mechanisms.

This invention also utilizes a response amplification mechanism linked to the door.
This is an improvement to a passive belt device that retracts the belt, with the aim of making the operation more reliable and faster (i.e., allowing occupants to be restrained and released).

Below, the detailed details of the device of the present invention are shown in the attached circular.
I will explain it starting with number 11.

Figures 1 to 4 show an example of the passive belt device of the present invention, in which Figure 1 shows the external appearance with the door closed, Figure 2 shows the appearance with the door open, and Figure 3 shows details of the belt winding mechanism. , FIG. 4 shows the working mode of the winding mechanism. In these figures, 2 is a vehicle body, 2 is a door, and 3 is an occupant restraint belt device, one end of which is connected to the seat 4 on the center side of the vehicle. It extends to the retractor 1 through a guide device 5 installed on the side of the seat 4 as a retraction belt 3C, and a tightening prevention device 6 installed at the bottom of the seat 4, and is wound and stored in a retractable manner. There is.

Normally, this retractor γ wraps around the belt so that it can be pulled out freely and does not impede the movement of the occupant. This is a well-known emergency lock type retractor that has a function of automatically locking the belt based on the inertia of belt withdrawal or sensing of the vehicle body to keep the occupant restrained.

Further, the other side of the restraint belt device 3 that is continuous with the retracting belt 3c is a shoulder belt 3a, which is inserted into a through anchor 8 fixed to the upper part of the open side of the door 2, and is folded back and moved downward. The waist belt t- 3b, and is fixed at an intermediate position between the retractable belt 3c and the shoulder belt 3a (by sewing or the like).

On the other hand, 10 is a connecting rod 11 whose one end is supported by the vehicle body 1.
A responsive amplification mechanism interlocks with the winding member 11, which connects the other end of the drive member 12, one end of which is fixed to the winding member 11, to open the door (responsively rotating the winding member 11).

FIG. 3 shows an example of a winding mechanism including the winding member 11 and the response amplifying mechanism 10, and the winding mechanism includes the door 2.
It is mainly composed of a response amplification mechanism 10 that is built in the inside of the hinge side and responds to the opening degree of the door 2, a winding member 11 that is built in the intermediate position on the opening side of the door 2, and a drive member 12 that connects these two. As described above, in this embodiment, the take-up member 11 is a take-up reel 1 which is rotatably pivoted to a frame fixed to the door 2.
3, a reel 14 is fixed to the end thereof, and one end of a wire serving as the driving member 12 is fixed to the reel 14, and is wound multiple times.

The wire 12 extending downward from the reel 14 is rotated around a guide pulley 15, changes direction, and is wound around the drive wire 6 in the response amplification mechanism 10.

For example, the inventor of the present invention previously applied for the response amplification mechanism 10 in a patent application filed in 1972.
An amplification mechanism as proposed as No. 120963,
A reaction mechanism consisting of a connecting rod 11 on the vehicle body 1 side, a 20th rod 19 having rack teeth 20 connected to the connecting rod 17, and an intermediate l/bar 18 connecting these two, and a rack tooth of the reaction mechanism. a pinion 21 that engages with 20;
It is constituted by an amplification interlocking mechanism formed by a large gear 22 coaxially fixed to the pinion 21 and a small gear 23 meshed with the dog gear 22.
A drive reel 16 for winding and unwinding the wire 12 and driving it is fixed to the shaft 24 of the wire.

However, these response mechanisms and interlocking mechanisms are not limited to this embodiment and can be modified in various ways. For example, the connecting rod 11 and rack teeth 20 of the response mechanism may be integrally configured, or the amplification interlocking mechanism may be modified. Of course, it is also possible to interpose another intermediate gear in the winding member 11, or to rotate the winding member 11 using an electric actuating device.

Although not shown in the illustrated embodiment, a pin 18' connects the connecting rod 1γ, the intermediate lever 18, and the 20th rod 19 in the response mechanism.

18 are respectively fitted into sliding grooves as shown in the above-mentioned Japanese Patent Application No. 52-120963, and when the connecting rod 11 is pulled in response to the opening degree of the door 2, that is, the wire 12 is amplified in response. The belt 3 is wound to a suitable length via the drive reel 16 in the mechanism 10, and while the take-up reel 13 is winding the belt 3 from the state shown in FIG. 4A to the state shown in FIG.
The point at which the T and 20th bolts 19 move linearly together with the intermediate lever 1B interposed, and the winding of the belt 3 is completed as shown in Figure 4, and the shoulder belt 3a and waist belt 3b are retracted. In this case, only the intermediate lever 18 is tilted to absorb the movement of the connecting rod 11, and the movement of the connecting rod 11 is not transmitted to the 20th rod 19, thereby stopping the operation of the amplification interlocking mechanism.

In the figure, 25 is a spiral spring attached to the end of the shaft 24 to which the drive reel 16 is fixed, and the take-up reel 13 winds the belt 3 in order to reduce the force required to open the door 2. When it is moved to the take-avoidance position, it tends to rewind and assists in its movement.

The passive belt device of the present invention is constructed as described above, and its operation will be explained based on the embodiment shown in FIGS. 1 to 4. First, when the door 2 is closed, that is, when the first When the belt device 3 is in the state shown in FIG.
passes through the shoulder belt 3a and the waist belt 3b, and the tractor γ below the seat 4 wraps around the retraction belt 3c.

When the door 2 is opened in this state as shown in FIG. Rotate the IJ-ru 16 counterclockwise.

Therefore, the wire 12 whose one end is fixed to the drive reel 16 is wound and pulled, and the reel 14 of the winding member 11
The wire 12 that has been wound several times is unwound.

As a result, the take-up reel 13, which is provided coaxially with the reel 14, rotates to take up the shoulder belt 3a and waist belt 3b at the same time, pulling up and retracting both belts 3a and 3b from the door 2 side. A retraction belt 3c is installed at the bottom of the vehicle and is fed out from the tractor 1, resulting in a state as shown in Figure 4. As a result, the gap between the seat 4 and the belt device 3 widens, allowing the occupant to move toward the vehicle without feeling any resistance. It becomes possible to get on and off easily.

Next, when an occupant gets on the vehicle and the door 2 is closed from the open state, the connecting rod 17 in the response amplification mechanism 10 is pushed toward the open side of the door 2.
The acting force is transmitted to each member, the drive reel 16 rotates clockwise, and the wire 12 wound around the drive reel 16 is rewound.

Therefore, the wire 12 is pulled out along with this, and the shoulder belt 3a and waist belt 3b receive tension from the retracting force of the IJ tractor 1 of the retracting belt 3c, rotating the belt take-up reel 13 in the unwinding direction, and at the same time A reel 14 fixed to the belt winds the wire 12 and the belt device 3
The vehicle is in a state as shown in FIGS. 1 and 4A, and the shoulder belt 3a and waist bell 1-3b (thus, the occupant is well restrained t7 and safety is ensured.

As described above, according to the passive belt device of the present invention, a configuration is adopted in which a response amplification mechanism that is linked to the opening and closing of the door is combined with a winding member that winds the belt on the door opening side by the action of the amplification mechanism, By simply opening and closing the door, the occupant can be automatically restrained or released smoothly and reliably, and an amplifying mechanism can amplify the opening of the door and convert it into the movement of the winding member. It has features such as quick movement and movement to the restraining position, and in practical use,
This is particularly suitable.

[Brief explanation of drawings]

FIGS. 1 and 2 are schematic external views showing an example of the device of the present invention, with FIG. 1 showing the door in a closed state and FIG. 2 showing the door in an open state. Further, FIG. 3 is a mechanism explanatory diagram showing the relationship between the responsive amplification mechanism and the winding member, and FIG. 4 is an explanatory diagram of the operation of the device. 1...Vehicle body, 2...Door, 3...
...Belt device, 3a...Shoulder belt, 3b...
...Waist belt, 3c...Retractable belt,
4...Seat sea 1-18.9...Through anchor, 10...Response amplification mechanism, 11...
... Winding member, 12 ... Drive member, 13.
... End-of-life reel, 1γ... Connection rod, 1
4...Reel.

Claims (1)

[Scope of Claim for Utility Model Registration] 1. Shoulder belt 3 connected to a pull-out belt 3c extending from the vehicle center side of the seat 4, which can be pulled out, rolled up, and retracted.
a, and the other end of the shoulder belt 3a is inserted into the through anchor 8 provided at the upper part of the open side of the door 2, and then passed through the take-up reel 13 of the installed take-up member 11 at an intermediate position on the open side of the door 2. It passes through a through anchor 9 provided at the lower part of the opening side of the door 2, and is fixed to the take-up reel 13 by one continuous belt device 3 whose end is fixed to the retractable belt 3c to become the waist belt 3b. A response amplification mechanism 10 that amplifies and transmits the movement of the reel 14 in response to the opening and closing of the door 2.
when the door 2 is opened via the drive member 12.
The rotation of the take-up reel 13 causes the reel 13 (shoulder belt 3a
By winding up the waist belt 3b and the waist belt t-3b at the same time, the anchoring point of the waist belt 3b and the retractable belt 3c is raised, and when the door is closed, the belt rewinding rotation of the take-up reel 13 raises the anchoring point. A passive belt device characterized by lowering the belt. 2. Utility model registration claim 1, in which the response amplification mechanism 10 is constituted by an amplification mechanism consisting of a combination of a connecting rod 11 with one end fixed to the vehicle body 1 side, and large and small gears that are linked to the movement of the connecting rod IT. Passive belt device as described in section. 3. The passive belt device according to claim 1, wherein the driving member 12 is a wire.