JPS5814339B2 - Passive belt belt guiding device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a belt guiding device for a passive belt that automatically releases or restrains an occupant by opening and closing a door.

Many passive belt devices have been proposed that automatically operate in response to door opening/closing in order to make it easier to attach and release the seatbelt. There are various problems that need to be improved regarding the related guiding mechanism, and studies are still being continued in various fields.

The inventor of the present invention has been paying attention to this problem for some time, and has attempted to improve it by researching a method of converting the degree of opening of the door into the operation of a drive member for guiding the belt through an interlocking mechanism. We have proposed a belt guiding device that integrates a reaction mechanism that responds to the movement of the reaction mechanism, and an amplification interlocking mechanism that responds to the reaction mechanism, amplifies the movement, and converts it to a belt guiding operation.

However, due to the mechanism in which one end of the response rod, which is the main body of the response mechanism, is fixed to the vehicle body, there are restrictions on the installation location of the device, and in addition, there is a need to guide the belt from the door closed state to the door half open state. Although the belt is not guided until the door is fully opened, the reaction rod requires a rotatable intermediate rod in order to absorb the movement that does not hinder the opening of the door. This required a special sliding groove surface to smooth the movement of the rods, including the rods, leading to a complicated overall mechanism.

Of course, the above device is also very effective depending on its mounting position, and it goes without saying that it is sufficiently effective in itself, but when considering various aspects of the belt guiding mechanism of a passive belt, it is possible to use a simpler device. It is natural that the need for a guidance device that is flexible is acutely felt, and therefore, in response to this need, the response rod is always urged toward the vehicle member by the biasing force of an elastic spring, and the response rod is Previously, a mechanism was proposed in which the belt can be smoothly guided by setting the tip end so as to counteract the elastic force of the elastic spring and come into contact with the vehicle member.

However, when this mechanism was later tested, it was found that although it was extremely comfortable when opening the door, when closing the door it compressed the elastic spring, making the movement feel heavy. I came to know that there was a need for departmental improvements.

That is, a first object of the present invention is to provide a belt guide device as described above that does not require a complicated response rod mechanism and can easily open and close a door.

It is also an object of the present invention to define the belt movement at the required opening angle of the response rod by utilizing a spring having a spring force that counteracts the required opening angle of the door, and to improve the ease of vehicle installation and operation thereof. The aim is to facilitate the

Furthermore, in conjunction with the above, the present invention reduces costs by simplifying the responsive amplification interlocking mechanism for belt guidance, reduces the burden of installing it on a vehicle, promotes its application, and improves the safety of occupants by installing safety belts. Another purpose is to ensure sex.

Accordingly, the structure of the present invention that achieves the above object includes forming a locking portion at the tip of the response rod, and providing an elastic locking device on the vehicle member side that can be elastically engaged with and detached from the locking portion. When the door is opened, the locking part of the response rod is elastically engaged and disengaged from the elastic locking device, and when the door is opened, the spring force of the spring causes the locking portion of the response rod to engage and disengage from the elastic locking device, and the rod slides only when engaged, resulting in amplification interlocking. While the mechanism is activated to move the belt toward the front of the vehicle, when the door is closed, the response rod engages with the vehicle member side locking tool and slides together, thereby causing the amplification interlocking mechanism to act on the opposite side. , which is characterized by moving the belt toward the rear of the vehicle.

Other features of the present invention and specific embodiments thereof will be made clearer in the following description, but of course the present invention is not limited to the description and various modifications may be made without departing from the purpose. It goes without saying that it is possible.

1 and 2 illustrate an embodiment in which the device of the present invention is applied, and FIG. 1 schematically shows a passive belt device using the device of the present invention.

In the figure, 1 is the vehicle body, 2 is the door, and 3 is the seat 10.
This is a belt that extends diagonally upward across the front of the seat 10 from the center of the vehicle, and one end of the belt 3 is attached to a locking mechanism 5 attached near the top of the center door 4 in the center of the vehicle body 1.
The movable anchor member 6, which moves back and forth along the inner surface of the roof 11, can be attached to and detached from the buckle 7 diagonally downward at the tip of the movable anchor member 6. On the other hand, the other end side is wound and housed in a retractor 9 provided at the lower part of the center side of the vehicle so that it can be pulled out and retracted.

This retractor 9 normally wraps the belt so that it can be pulled out freely so as not to impede the movement of the occupant, but in the event of a collision where sudden acceleration/deceleration occurs or when the car tilts, etc. This is a well-known emergency lock retractor that has the function of automatically locking the belt and restraining the occupant based on the inertia of the belt being pulled out or sensing the vehicle body.

Furthermore, in addition to employing known mechanisms for engaging and disengaging the movable anchor member 6 and the locking mechanism 5 in the device mechanism, various mechanisms previously proposed by the present applicant may be applied at any time. .

Reference numeral 12 denotes a drive member for moving the belt 3 from the rear occupant restraint position to the front release position, the rear end of which is connected to the movable anchor member 6, as shown in detail in FIG. It is installed along a guide rail 13 provided from the inner surface of the roof side 11 on the upper part of the center villa 4 to the front pillar 14, and the belt 3 is simultaneously moved by the sliding movement of the guide rail 13.

In the figure, reference numeral 15 indicates an amplification interlocking mechanism according to the present invention, in which a partially used response rod 16 that responds to the opening and closing of the door and a drive member 12 such as a racked wire connected at one end to the movable anchor member 6 are pulled out. - The drive gear 17 is shown as being retractable, and the front end 16a of the response rod 16 is not pivoted to the vehicle body 1, but is arranged to respond to door opening/closing by a mechanism described later. .

Incidentally, when the drive member 12 is a wire, a winding reel for winding the drive member 12 is used as the drive gear 17.

FIGS. 2 and 3 also show detailed examples of the specific structure of the amplification interlocking mechanism 15, in which the front end 16a is formed as a locking part forming a chain hook, and the rear end thereof has a rack 18. A response member comprising a response rod 16, a pinion 19 that engages with a rack 18 of the response member 16, a large gear 20 coaxially fixed to the shaft of the pinion 19, and a dog gear 2.
A drive system is formed by an amplification interlocking mechanism formed by a small gear 21 that meshes with the small gear 21, and a drive gear 17 for operating the drive member is fitted on the shaft 22 of the small gear 21 coaxially therewith. ing.

An intermediate gear is further arranged as necessary to connect each of the gears, and a spiral spring 23 biased toward the rewinding side is attached to the shaft 22 in order to reduce the opening force of the door 2. This reduces the burden when opening.

Note that this spiral spring 23 is set to be relatively light.
It also has the role of moving forward to fix the wobbling of the movable anchor member 6 and prevent it from moving backward or the like.

In the above configuration, the locking portion 16 is attached to the tip of the response rod 16.
As described above, a hook 24a is formed on the vehicle body side in correspondence with the locking portion 16a, and the locking tool 24 has a hook portion 24a at its tip on the vehicle body side in the figure. A spring 26 is interposed between the response rod 16 and the response rod 16 so that the response rod 16 can be tilted back and forth by a required angle, usually preferably 30 degrees, and can be disengaged from the front end locking portion 16a of the response rod 16. is normally provided with a spring force that counteracts the opening force of the required opening angle when the door is opened.

Of course, this spring is limited to the winding reel 1 shown in the illustration.
It is also possible to replace it with a spiral spring 23 coaxial with 7, and it is also possible to use other types of springs with the same effect, but in either case, the spring force must be set so that it is counterbalanced with the door opening force. Of course, it is preferable to set .

Thus, depending on the required degree of opening of the door 2, the reaction rod 1
6, the drive member 12 is driven to move the belt 3 together with the movable anchor member 6 between the solid line position and the two-dot chain line position.

Although the above description has been made for the case of the diagonal belt shown in the figure, it goes without saying that the present invention can also be applied to the movement of the shoulder belt in the case of a continuous belt system in which the shoulder belt and the waist belt are continuous. , various modifications are naturally permitted.

FIGS. 4 to 6 are explanatory diagrams of the operation of the main parts of the present invention in a passive belt device having the above-mentioned structure,
In FIG. 4, when the door 2 is closed, the response rod 16 is
The front end locking part 16a is engaged with and integrated with the hook part 24a of the elastic locking device 24 near the door hinge part 27, while the pinion 19 is located near the front of the rank 18 and is connected to the amplification interlocking mechanism. The drive member 12 is pulled out from the connected drive gear 17 and moves the movable anchor member 6 to the second position.
The vehicle is moved to the position shown by the solid line in the figure to ensure that the occupant is restrained.

When the door 2 is opened from this state as shown in FIG. Response rod 1 depending on the angle
The end locking portion 16a of 6 is tilted toward the disengagement tendency with respect to the locking tool 24, and as a result, the pinion 19 moves to the rear side of the rank 18, and the amplification interlocking mechanism is activated to rotate the drive gear 17 and close the drive member. 12, the movable anchor member 6
is moved to the position shown by the two-dot chain line in FIG. 2, and the shoulder belt 3 is moved to the retracted side to release the restraint of the occupant.

When the door 2 tilts back and forth by about 30 degrees, the engagement limit is reached and the locking part 16a of the response rod 16 and the locking tool 2
4 is disengaged from the hook portion 24a, and at the same time, the response rod 16 becomes free.

Furthermore, when the door 2 shifts from half-open to fully open, the response rod 16 separates from the vehicle body 1 as shown in FIG. The door 2 is opened without the drive member 12 being operated by the gear 17, but the shoulder belt 3 is not guided at all.

Next, the occupant gets on or off the vehicle with the door 2 fully open,
When the door 2 is closed, the door 2 goes from the state shown in FIG. 6 through the state shown in FIG. 5 to the closed state shown in FIG. 4, contrary to the above-described operation.

That is, the amplification interlocking mechanism does not operate until the response rod 16 engages with the locking tool 24 of the vehicle body 1, and therefore the shoulder belt 3 is not guided, and the response rod 16 does not reach the required position. When the opening angle is reached, the locking part 16a at the tip
When the latch 24 is locked, the engagement between the rack 18 and the pinion 19 causes each gear of the amplification interlocking mechanism to perform the required interlocking operation, causing the drive gear 17 to operate in a manner different from when the door is opened. The drive member 1, such as a racked wire, is rotated in the opposite direction.
2, the movable anchor member 6 is moved to the solid line position in FIG.

Thus, by engaging and disengaging between the locking portion 16a at the tip of the response rod 16 and the hook portion 24a of the locking tool 24 on the vehicle body side, the movable anchor member 6 is automatically moved between the occupant restraint position and the release position. In addition to automatically guiding passengers to get on and off the vehicle, it is possible to automate restraint and release using shoulder belts.

FIGS. 7 and 8 show modified embodiments of the locking part of the response rod 16 and the locking tool on the vehicle body side in the belt guiding device according to the present invention. The portion 16b is formed in a mushroom shape having a constricted portion, and the corresponding locking tool on the vehicle body side has two claw members 29 and 30 having concave and convex fitting portions that fit into each other. 25, and fixed by the shaft 28 to the vehicle body mounting plate 25.
At the same time, the locking portion 16b at the tip of the response rod is elastically fitted and fixed by a spring 31, and the two pieces are fixed depending on the required opening angle of the door, for example, about 30 degrees. The response rod end insertion portions of the pawl members 29 and 30 open to allow the response rod 16 to be disengaged, and when the door is closed, the end locking portion of the response rod 16 opens to the required degree of closing, that is, when the opening degree is about 30 degrees. 16b
is pushed between the claw members 29 and 30 of the engaging IE tool, and is fitted and fixed.

In addition, in the above structure, a spring 32 for positioning both the claw members 29 and 30 is further provided.

FIGS. 9 to 11 are explanatory diagrams showing the operating states of door opening/closing and belt guidance when the belt guiding device based on the above structure is used. In contrast, the locking tool is made up of two claw members 29 and 30 elastically connected to the mushroom-shaped locking portion 16b, whereas the locking tool is elastically engaged with the locking portion 16b in the shape of a mushroom. The only difference is that the spring force is elastically engaged with the door, and the spring force is released at the required door opening angle, for example, about 30 degrees. There is no difference from the cases shown in FIGS. 4 to 6.

In addition, in FIGS. 9 to 11, parts with the same reference numerals as those in the previous figure represent the same members.

As described above, the present invention uses the amplification interlocking mechanism to convert the displacement of the door due to the opening and closing of the door into the movement of the movable anchor member etc. that engages with the shoulder belt via the response mechanism, and in any door opening angle state. The shoulder belt is moved from a position that obstructs getting on and off the vehicle, and the opening of the door after the belt is shifted can easily respond to the movement, so the movement of simply opening and closing the door automatically eliminates the large amount of belt displacement. This makes it possible to absorb this and significantly improve the practicality of the passive belt.In addition, we have adopted an easy-to-engage locking mechanism that uses the spring force as a response mechanism, and the tip of the response rod and a single unit. Since the side locking device is elastically engaged and can be automatically engaged and disengaged depending on the opening angle of the door, the door can be easily opened and closed, without being weighed down by spring compression when the door is closed. In addition, even if the amplification mechanism does not operate in the event of a collision, it is easy to manually release the door, and the door can be easily opened for emergency escape, making the overall installation simple. This, together with the reliability of mechanical operation, is extremely safe, and has expanded its use to various vehicle models, and has a remarkable effect on improving safety through the use of seatbelts.

[Brief explanation of drawings]

FIG. 1 is an overview perspective view showing an example of a passive belt device to which the device of the present invention is applied, FIG. 2 is a mechanism explanatory diagram showing the relationship between an amplification interlocking mechanism and a belt transfer mechanism, and FIG. 3 is a main part of the present invention. Detailed view showing an example of the response rod engaging portion forming the fourth
6 to 6 are explanatory diagrams of the operation of the device of the present invention, in which FIG. 4 shows the door in the closed state, FIG. 5 in the ajar state, and FIG. 6 in the door fully open state. Further, FIGS. 7 and 8 are side sectional views and front views showing modified embodiments of the response rod engaging portion which constitutes the main part of the device of the present invention, and FIGS. 9 to 11 are views showing the same device of the present invention. It is an explanatory view of the operation of the applied passive belt device. 1...Vehicle body, 2...Door, 3...Belt, 4...
・Center pillar, 6... Moving anchor member, 12.
... Drive member, 14... Front pillar, 15...
Amplification interlocking mechanism, 16... response rod, 16a, 16b
...Response rod locking part, 17... Drive gear or wire winding reel, 18... Rack, 19... Pinion, 22... Shaft, 20, 21... Gear, 23...・
- Spiral spring, 24...locking tool, 26, 31...spring, 24a...hook portion, 29, 30...claw member, 31, 32...spring.

Claims (1)

[Scope of Claims] 1. A response member that responds to the opening and closing of a door, a drive member that guides a passive belt, and an amplification interlocking member that amplifies and interlocks the movement of the response member to the drive member. In the passive belt device, the reaction member includes at least a reaction rod having a rack for starting the amplification interlocking member in a part thereof, a locking portion formed at a front end portion of the reaction rod on the door hinge side, and the locking portion. An elastic locking device on the vehicle body side corresponding to the locking portion is provided, and the locking device and the locking portion can be engaged and detached when the door is at a certain opening angle, and when the door is in a half-open state than when the door is closed. The belt is moved to the release position by an amplifying interlocking member that engages and drives the rack according to the opening degree of the door while maintaining the engaged state, and between the door half-open state and the door fully open state, the above-mentioned engagement is maintained by displacement of the response rod. A belt guiding device for a passive belt, characterized in that the stop portion is disengaged from the locking tool to absorb the displacement of the door opening degree. 2. A pinion in which the amplification interlocking member engages with a rack provided on a part of the response rod, a large gear coaxial with the pinion, a small gear meshing with the large gear, and 1 drive member winding coaxial with the small gear. A belt guiding device for a passive belt according to claim 1, which is constituted by a combination of a reel or a driving gear. 3. The belt guiding device for a passive belt according to claim 2, further comprising a spring that tends to unwind when the belt is moved to the release position side coaxially with the driving member winding reel or the driving gear.