JPS60154937A - Seatbelt device - Google Patents

Abstract

PURPOSE:To prevent missing of application of seatbelt by providing a signal oscillation element and a receiving circuit in the seatbelt while providing a control circuit for enabling start of car engine upon receipt of an oscillation signal in the receiving circuit. CONSTITUTION:A signal oscillation element or a magnetic tape 7 is sticked to a seatbelt 1 to store the signal. The receiving circuit 4 has a magnetic head for detecting the signal of magnetic tape 7 and the control circuit 5 will produce a signal for bringing the engine drive circuit 6 into drivable state on the basis of said signal. Upon receipt of a control signal, the engine driving circuit 6 is brought to drivable state thus to drive the engine through operation of engine key.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a seat belt for ensuring the safety of a driver when driving a car.

2. Description of the Related Art Conventional Structures and Problems Conventionally, an automobile engine has been started using a system in which a starter is rotated by operating an engine key to perform an ignition operation and initial drive of the engine.

In recent years, people are calling for safe driving, and the movement to make it compulsory to wear seatbelts is gradually gaining momentum. However, since the engine start and seat belt are not linked, it is common for the engine to start and the driver to take off without wearing the seat belt, making it difficult to drive safely. You can't necessarily expect it.

OBJECTS OF THE INVENTION The purpose of the present invention is to eliminate such drawbacks, and it is an object of the present invention to make it possible to expect even safer driving by reliably wearing a seat belt.

Composition of the Invention The present invention I↓ consists of a seatbelt control device with a function of detecting whether a seatbelt is worn, and an engine drive circuit, and when the seatbelt control device receives a signal indicating that the seatbelt is fastened, the engine drive circuit is activated. The system configuration allows the engine to be started as long as there is a signal from the engine key.

DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments of the present invention will be described. FIG. 1 shows a functional block diagram of the present invention.

Reference numeral 1 denotes a seat belt, and when the seat belt is worn, the seat belt 1 wound around a seat belt retractor 2 is pulled out by a metal fitting of a seat belt stopper 3.

A force is always applied to the seatbelt retractor 3 in the direction of retracting the seatbelt 1. Furthermore, as shown in FIG. 2, a magnetic tape 7 of an appropriate length is attached to the seat belt 1 as a signal oscillation element at an appropriate location from the seat belt stopper 3 to the length required for wearing. Leave it on. Appropriate signals are stored on the magnetic tape 7.

Reference numeral 4 indicates a receiving circuit including a magnetic head for detecting the signal from the magnetic tape 7, and 5 indicates a control circuit which outputs a signal for enabling the engine drive circuit 6 to be driven in response to the signal from the receiving circuit.

When the seatbelt 1 is pulled out to the fastening position, the signal stored on the magnetic tape 7 attached to the seatbelt 1 is detected by the magnetic head of the receiver circuit 4, processed, and a detection signal is output as the output of the receiver circuit 4. be done. The control circuit 5 receives the detection signal and outputs a control signal for controlling the engine drive circuit 6. The engine drive circuit 6 becomes ready to drive the engine only after receiving the control signal,
The engine can be driven by operating the engine key.

Note that the method for detecting the wearing of the seat belt 1 is as follows:
In addition to the combination of magnetic tape and magnetic head, magnets and magnetic sensors (Hall elements, MR sensor Wigand wires, etc.)
, a combination of a light source (such as an LER) and a phototransistor, etc., can be considered by providing an appropriate hole in the seat belt 1 at the relevant position and passing the hole through the hole.

As described in detail, the present invention makes it possible to drive the engine only after the seatbelt is worn, which eliminates the need to drive a car due to forgetting to wear the seatbelt, so safe driving can be expected.

[Brief explanation of the drawing]

FIG. 1 is a functional block diagram of a seat belt device according to an embodiment of the present invention, and FIG. 2 is a front view of the seat belt. 1. Seat belt, 2.-Seat belt retractor, 3
... Seatbelt stopper, 4... Receiving circuit, 5...
・・Control circuit, 6・−・Engine drive circuit, 7・
Magnetic tape. Name of agent: Patent attorney Toshio Nakao and 1 other person81
Figure 71 J

Claims (1)

[Claims] A signal oscillation element installed in a part of a seat belt that is installed in a car seat and used by pulling out the belt part when worn, and a signal oscillation element installed in the pull-out part of the seat belt and receiving a signal oscillated from the signal oscillation element. A seat belt device comprising a receiving circuit and a control circuit that enables starting of an automobile engine when the receiving circuit receives an oscillation signal.