JP2023088812A - Automatic releasing seat belt - Google Patents

Abstract

To provide a seat belt which prevents accidents happening when a person, especially an elderly, inadvertently starts a motion of getting off a seat without releasing it and incurs a shoulder, chest or arm injury which takes a long time to recover from, by automatically being released when the engine is turned off, without requiring a complicated additional electronic circuit structure.SOLUTION: An automatic releasing seat belt is configured such that a belt-side tongue plate is held and locked by electromagnetic force while an engine is turned on via a solenoid provided in a buckle and is released when the engine is turned off, while it can be manually released whenever necessary.SELECTED DRAWING: Figure 1

Description

To provide a seat belt that automatically comes off without relying on manual operation when getting off from an automobile seat.

Conventionally, with regard to seat belts, the focus has been on prevention and devising so that they do not come off easily due to the impact of an accident such as a collision. Various small items are also sold to reduce the trouble and difficulty of wearing. However, when I got out of the car, I forgot that I was wearing my seatbelt, and inadvertently tried to get out of the car by skipping the operation procedure for unlocking the buckle. The number of middle-aged and elderly people who are forced to go to the hospital is increasing, and it is attracting attention as a new daily minor accident in the aging society, and although it is not a life-threatening accident, it is quite troublesome for middle-aged and elderly people and can not be taken lightly. .
There is known a seatbelt device intended to relieve the troublesome manual unlocking of the buckle (see Patent Document 1).
Also known is an automatic unlocking mechanism for a buckle device that can unlock without requiring the operation of a release button (see Patent Document 2).

JP-A-59-040964 Published practical application s59-147653

In the shadow of one-sided efforts to prepare for traffic accidents, there is a steady increase in demand, and there is a need for pioneering products to prevent new "car-related accidents" in an aging society that cannot be laughed at. Middle-aged and elderly people become aware of their forgetfulness as they age, but shopping and going to the hospital are difficult without a car to compensate for their weakening legs. Life-threatening collisions, driving errors, and brake misapplication accidents are widely reported, but in an aging society where the demographic composition has entered a fundamental change curve, forgetting to unfasten the seatbelt when getting off the car is a very common occurrence. The auto industry needs to take serious measures to deal with "small" bodily injury accidents. It is qualitatively different from providing an advanced and complicated mechanism that responds to the "need" to improve work efficiency by reducing the troublesome work drivers have to do at the necessary speed. It should be a different form of consideration for people, and it is a problem that cannot be solved by ``calling attention'' when ``getting on and off''.
In the prior art disclosed in Patent Document 1, when the driver turns off the engine switch while getting off the vehicle, the OFF output signal activates the one-shot circuit through the detection circuit, and the solenoid drive circuit operates to temporarily energize the solenoid. The operating shaft is attracted by the electromagnetic force acting on the solenoid, and the lever that integrates the projection hooked on the hole of the tongue plate inside the buckle pushes down the projection to disengage the tongue plate from the projection. is pushed out.
In the prior art disclosed in Patent Document 2, a limit switch is additionally installed in the hole of the engine key to operate and energize only when the engine key is OFF to generate the electromagnetic attraction force of the solenoid. When the engine is turned off, it is a mechanism that the lock lever is sucked and turned to detach from the tongue plate only within that limit.
Both of the above prior arts go to the trouble of additionally installing a one-shot circuit or limit switch to activate the solenoid only when the engine key is turned off. The problem is solved by moving or rotating a pawl or projection shaft (lever) locked in a hole in a tongue plate locked in the buckle in the direction of disengagement by an electromagnetic attraction force generated when the solenoid is temporarily energized. are common in that It is also a common feature in that it assumes an existing lock structure and uses the electromagnetic attractive force of the solenoid only for unlocking. The structural complication is also considered to be one of the factors that delayed the practical application of automatic release of seat belts.
The present invention provides a simple and easy-to-use locking/unlocking mechanism between the tongue and buckle by utilizing the characteristics of the solenoid for the lock itself without requiring a complicated circuit mechanism or switch mechanism that requires additional difficulties and costs. To provide a seat belt with

It consists of a combination of a belt mechanism and a buckle mechanism, and a solenoid installed in the buckle mechanism is temporarily energized only when the engine is off, and attracts the lock lever with electromagnetic force to pull the tongue plate. In the form of unlocking the seat belt, which automatically releases physical restraints without manual action,
The electromagnetic force of the solenoid, which is energized only when the engine is ON, directly attracts and locks the tongue plate on the side of the belt mechanism. offer.
In the belt portion, a conductive portion made of an electromagnetic induction material is embedded in the wide surface central region of the tip region of the tongue plate attached to the belt body, covering the full width of the thin thickness,
In the buckle part, the solenoid part is integrated into the buckle case body through a separate contact type joint having a contact space at the end of the tongue insertion part of the buckle body part that receives the tongue plate. , a plunger portion is provided in the central region of the solenoid portion that is in close contact with the tongue plate when it is inserted, and is in close contact with the conductive portion of the tongue plate;
With one of the two wide surfaces of the buckle as the front, the front side of the buckle case body has a manual switch push button exposed to the outside at a portion where the buckle main body and the solenoid part come into contact with each other. An electromagnetic opening/closing shaft is provided that enters the inside of the buckle case body from the center of the switching push button at right angles, extends to the joint portion, has a thin flat and sharp tip, and is pushed into the close contact space by external pressure. there is
On the inner side of the manual switching push button that faces the outer wall of the buckle case body, the base is fixed to both the upper and lower sides of the buckle body side and the solenoid side, and bulges in an arc shape to the base of the electromagnetic opening/closing shaft. , a push button adjustment spring is provided, and a cover-like dust prevention part is provided to prevent dust from entering, surrounding the periphery of the push button adjustment spring,
A solenoid power supply linked to the engine switch is provided at a slightly lowered position of the dust prevention section.
Before starting, the passenger first turns on the engine switch, and then inserts the tongue plate into the tongue insertion part of the buckle body. As long as it stays in place, the tongue plate will not come off and will be held firmly. When getting off the vehicle, when the engine switch is turned off, the electromagnetic attraction of the plunger part is turned off, and the electromagnetic attachment state that has been attracted and held via the conductive part is automatically released. Without doing so, the tongue plate automatically disengages from the buckle portion and returns to the belt winding mechanism portion. As before, if you forget to release the seat belt and inadvertently try to get off the seat while still restrained by the seat belt, there is a danger of hurting your shoulders, waist, chest, ribs, upper arms, etc. due to the strength of the belt. automatically prevented.
If there is an engine trouble or something that does not automatically release, do not panic and press the manual switch push button on the outside of the buckle case body with your finger. It cuts into the close contact space of the joint where the jar part is in close contact, cancels the electromagnetic connection state, and the tongue plate separates smoothly.
The automatic detachable seat belt is characterized as described above.

First, in an aging society, in contrast to the tendency of young people to avoid cars, there is also an increase in the number of elderly people who cannot live their daily lives without a car for daily shopping and hospital visits. It is not only the newsworthy aspect of the increase in serious accidents, but also the increase in elderly people who use cars on a daily basis, suffering from minor physical injuries that they have no choice but to give up as "inevitable and unavoidable." You have to get out of the car you're in to get out of the car, and because it's a standard behavior that gets boring every day, you inadvertently add physical damage that makes you say "Aitata!" Although it is "just" a small accident like a car crash, and it is not a damage to another person or property, it should be recognized as a proper car-related accident, and the recognition that it is such an era must be shared.
"Injuries to the shoulders, waist, chest, ribs, and upper arms of the elderly," which are likely to occur due to "forgetting to unfasten the seatbelt" when getting out of the car, add to the chronic illness that the person has from the beginning, and torment the person persistently. , is an "avoidable blow", and the present invention should be able to turn this social phenomenon around for the better.
Secondly, even if it was not intended to meet the demands of the times and society mentioned above, technological developments have been made to meet the need for automatic release of seatbelts mainly from the viewpoint of operational efficiency. Due to the overemphasis on technological development, the direction of structural complication was unavoidable, which became a bottleneck and did not progress to commercialization. In this regard, one method that is easy to carry out has been provided by a simple and clear structural change using a solenoid as an intermediary in both the tongue plate on the belt portion side and the buckle portion side in the present invention.

BB' cross-sectional view partially including the vehicle body mounting portion in the present invention shown in FIG. AA' cross-sectional view including a part of the vehicle body mounting portion in the present invention shown in FIG. Appearance perspective view in the present invention

Hereinafter, the configuration of the invention will be reconfirmed and the embodiments will be described with reference to the drawings in the preceding paragraph.
In the belt portion (1), a conductive portion (6) made of an electromagnetic induction material is formed in the central region of the wide surface of the tip region of the tongue plate (2) attached to the belt member (15) and is made of an electromagnetic induction material. is embedded,
In the buckle part (3), the tongue plate (2) is received at the end of the tongue insertion part (14) of the buckle main body part (4) via a separate and close-fitting joint (9) having a close-fitting space. , the solenoid part (5) is integrated in the buckle case body (7), and the tongue plate (2) A plunger portion (8) is provided at a portion that is in close contact with the conductive portion (6) of
With one of the two wide faces of the buckle part (8) as the front, the buckle case body (7) on the front side corresponds to the junction (9) between the buckle main body (4) and the solenoid part (5). The manual switching push button (10) is exposed to the outside at the contacting part, and the center of the manual switching push button (10) enters the inside of the buckle case body (7) at right angles to form a tight joint (9). an electromagnetic opening/closing shaft (11) that extends to a point, has a flat and sharp tip, and is pushed into the close contact space by an external pressure,
On the inner surface of the manual switching push button (10) facing the outer wall of the buckle case body (7), the base is fixed to both the upper and lower surfaces of the buckle main body (4) side and the solenoid part (5) side, and the electromagnetic A push button adjustment spring (12) is provided in an arcuate shape extending to the base of the opening/closing shaft (11), and a cover-like dust prevention part (12) surrounds the spring to prevent dust from entering. 13) is provided,
A solenoid power supply (15) linked to an engine switch is provided at a slightly lowered position of the dust prevention section (13).
The present invention is configured as described above, and its embodiments and specific usage will be described below.
There is no need to change the mounting position or material of the seat belt, which is generally widely practiced. On the (3) side, the buckle main body (4) and the solenoid (5) are joined via a separate and close joint (9), which is integrated with the buckle case body (7), and the engine The plunger part (8) of the solenoid part (5) and the conductive part (6) of the tongue plate (2) are mechanized in a direct electromagnetic attraction-releasing system via the solenoid power supply (9) linked to the switch. , the question itself of "how to separate the lock lever/claw from the hole in the tongue", which the prior art has struggled with, has been solved. Naturally, a manual switching push button (10) is also provided so that manual release can be performed at any time in case of an unexpected emergency, ensuring peace of mind.
When specifically using this, the passenger first turns on the engine switch before starting, and then inserts the tongue plate (2) into the tongue insertion part (14) of the buckle body (4). Then, the conductive part (6) is automatically sucked by the plunger part (8), and as long as the engine switch is in the ON state, the tongue plate (2) is firmly held without coming off. When getting off the vehicle, when the engine switch is turned off, the electromagnetic attraction of the plunger part (8) is turned off, and the electromagnetic attachment state that has been attracted and held via the conductive part (6) is automatically released, and the buckle part ( The tongue plate (2) automatically separates from the buckle portion (3) and returns to the belt winding mechanism side without performing an unlocking operation by searching for 3). As in the past, if you forgot to release the seat and tried to get off the car while your body was still restrained, you would be at risk of injuring your shoulders, hips, chest, ribs, upper arms, etc. due to the pullback force of the belt. are automatically prevented.
If there is an engine trouble or something that does not automatically release, just press the manual switching push button (10) outside the buckle case body (7) without panicking, and the electromagnetic opening/closing shaft (11) will be activated. ) cuts into the close contact space of the joint (9) where the conductive part (6) and the plunger part (8) are in close contact with each other, canceling the electromagnetic contact state, and the tongue plate (2) smoothly separates. continue.
Thus, the elderly driver does not need to learn additional operation procedures more than before, and does not have to remember the painful feeling of forgetting to take the release procedure and feel resentment for getting older. Instead, you can enjoy using the car as a substitute for your weak feet in your daily life.

1 belt portion, 2 tongue plate, 3 buckle portion,
4 buckle body portion, 5 solenoid portion, 6 conductive portion,
7 buckle case body, 8 plunger portion, 9 joint portion,
10 manual switching push button, 11 electromagnetic switching shaft,
12 push button adjustment spring, 13 dust prevention part,
14 tongue insertion part, 15 solenoid power supply, 16 band,
17 belt through-hole, 18 vehicle body mounting portion

Claims (2)

In a seat belt consisting of a combination of a belt part and a buckle part, in the belt part, in the wide surface central region of the tip region of the tongue plate attached to the belt, the thin thickness width is filled with a conductive material made of an electromagnetic induction material. part is buried,
In the buckle part, the solenoid part is integrated into the buckle case body through a separate contact type joint having a contact space at the end of the tongue insertion part of the buckle body part that receives the tongue plate. , a plunger portion is provided in the central region of the solenoid portion that is in close contact with the tongue plate when it is inserted, and is in close contact with the conductive portion of the tongue plate;
In the buckle case body, the manual switching push button is exposed to the outside at a portion that just abuts the joint, enters the buckle case body perpendicularly from the center of the manual switching push button, extends to the joint, and reaches the tip. There is provided an electromagnetic opening/closing shaft that is thin, flat, and sharply pointed, and is pushed into the close contact space by external pressure,
On the inner side of the manual switching push button, a push button adjustment spring is provided with its root fixed to both the top and bottom sides of the buckle body and the solenoid, and swells in an arc to the root of the electromagnetic opening/closing shaft. ,
A solenoid power supply linked to the engine switch is provided near the push button adjustment spring,
An automatic detachable seat belt characterized by the above. 2. The automatic detachable seat belt according to claim 1, wherein a cover-like dust prevention part is provided so as to surround the push button adjusting spring.

Images