KR0174414B1 - Impact absorbing device composed in buckle anchor for a vehcle seat belt - Google Patents

Abstract

The present invention relates to a seat belt of an automobile, and having a buckle at one end thereof and lancing at a predetermined interval, a support plate having a plurality of protrusions formed thereon, and one end fixed to a floor portion, and holes sequentially increasing so that the protrusions correspondingly engage. The formed connection piece was provided to protect the chest of the human body by minimizing the impact force applied to the chest belt as the protrusions of the support plate were sequentially deformed by the holes of the connection piece during the collision of the vehicle.

Description

Car seat belt

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a seat belt of a motor vehicle, and more particularly, to a seat belt of a motor vehicle to absorb an impact force transmitted to a wearer's chest during a collision of the motor vehicle.

As is well known, the seat belt is a component that reduces the secondary injury caused by the collision between the human body and a predetermined part of the vehicle during the collision of the vehicle by fixing the position of the occupant to the seat as much as possible.

As shown in FIG. 1, the conventional seat belt has a retractor 2 installed on one side of the seat 1, and a support part 4 is provided on the center pillar part 3 on the upper side thereof. Belt 5 is provided to connect to the support part 4 and back to the retractor 2. The middle part of the belt 5 is provided with a tank plate 6, It divides into 5a and the waist belt 5b.

On the other hand, the support plate 8 having the through-hole 8a is fixed to the floor part of the other side of the seat 1, and the buckle 7 is provided at the end thereof so that the tank plate 6 described above is coupled thereto. .

The conventional seat belt of this configuration is worn by pulling the belt 5 in the state where the occupant is seated on the seat 1 and pulling it out of the ratchet 2 to couple the tank plate 6 to the buckle 7.

By the way, the belt 5 or the support plate 8 of the conventional seat belt has almost no elasticity and is hardly deformed by external impact, so that the inertia force of the human body maximized due to the sudden stop during vehicle collision is transmitted to the chest belt 5a. As a result, the shock as large as the maximum inertial force was transmitted to the chest of the human body, causing a safety accident such as a heart rupture.

In view of the above-described problems, an object of the present invention is to provide a seat belt of a vehicle to minimize the impact of the chest by the chest belt to absorb a certain amount of inertial force of the human body by providing a shock absorbing means to the support plate and the connecting piece. will be.

1 is a perspective view showing a seat belt of a conventional vehicle

Figure 2 is an exploded perspective view of the main portion of the seat belt of the present invention vehicle

3 is a combined cross-sectional view

4A and 4C are partial cross-sectional views sequentially illustrating a state in which the main portion of the seat belt is deformed when the vehicle collides with each other.

* Explanation of symbols for main parts of the drawings

1: Sheet 2: Retractor

4: Supporting part 5a: Chest belt

6: tank plate 10: support plate

14: deformation protrusion 20: connecting piece

22: operating hole

The seat belt of the vehicle of the present invention for achieving the above object, the support plate is fixed to the floor portion of the seat side is provided with a buckle at its end to detach the tank plate provided in the middle of the belt to the buckle In the seat belt, a support plate having a buckle on one end and lancing on the other side and having a plurality of protrusions formed thereon, and a cross section having a channel shape, one end fixed to the floor, and the opposite end fixed to the corresponding surface such that the protrusions are fitted into the seat belt. It characterized in that the connection piece is further provided with a plurality of holes are gradually increasing in size.

According to the seat belt according to the present invention as described above, because the maximum inertial force of the human body is transmitted to the chest belt to some extent reduced chest compression by the chest belt is minimized to protect the occupants.

Specific features and advantages of the present invention will become more apparent from the following description taken in conjunction with the accompanying drawings.

Figure 2 is a partial separated perspective view of the main portion of the seat belt according to the present invention, the support plate 10 provided with a buckle 12 on one side, and one end is fixed to the floor portion 23 bark plate 10 Is provided with a connecting piece 20 is coupled.

First, the support plate 10 is divided into a rectangular metal plate-shaped coupling part 13 and an extension part 11 extending from one side thereof and having a buckle 12 fixed to an end thereof. The lancing is processed along a predetermined interval so that the first, second, third and fourth protrusions 14a, 14b, 14c and 14d (these are called deformation protrusions) are sequentially formed.

On the other hand, the connecting piece 20 to which the support plate 10 is coupled is provided with a fixing portion 21 having a through hole 21a formed so that one end thereof is fixed to the floor portion 23 by a channel shape, and the coupling portion 13 is provided. First, second, third and fourth holes 22a, 22b, 22c and 22d to correspond to the deformed projections 14 of

(These are called working holes) are formed.

Here, the operation hole 22 is formed so that the height of the hole increases toward the opposite side of the fixing portion 21. That is, as shown in Figs. 3 and 4, the height of the first hole 22a is D1, the height of the second hole 22b is D2, and the height of the third hole 22c is D3 and the fourth hole 22d. ), The height of D4 is D1 <D2 <D3 <D4.

Meanwhile, since the deformation protrusions 14 are formed at a predetermined interval, the distance between the first protrusion 14a and the second protrusion 14b is d1, and the distance between the second protrusion 14b and the third protrusion 14c is d2, When the distance between the 3rd protrusion 14c and the 4th protrusion 14d is d3, it is d1 = d2 = d3.

When the first protrusion 14a of the deformation protrusions 14 of the support plate 10 formed as described above is supported to be supported at the upper end of the first hole 22a of the operating holes 22 of the connecting piece 20, the second and third and The fourth protrusions 14b, 14c, and 14d have a progressively increased separation distance from the upper ends of the second, third, and fourth holes 22b, 22c, and 22d.

Therefore, the support plate 10 is coupled to the connecting piece 20 and when the seat belt is worn in a state in which the fixing part 21 of the connecting piece 20 is fixed to the floor part 23 by the fixing bolt 24, the collision of the vehicle is caused. When the impact force is applied to the chest belt 5a by the inertial force of the human body, and thus the support plate 10 is pulled to the front side, at this time, the connecting piece 20 is fixed to the floor 23 so that the first hole ( 22a) The first protrusion 14a supported at the upper end is bent from the first hole 22a while being bent as shown in FIG. 4B by the support plate 10 to be raised.

Here, as the support plate 10 is continuously pulled by the inertia force of the human body, as shown in FIG. 4B, the second protrusion 14b is caught and supported by the upper end of the second hole 22b, as shown in FIG. 4C. As described above, the second protrusion 14b is bent from the second hole 22b while being bent, and the third and fourth protrusions 14c and 14d are also separated from the first and second protrusions 14a and 14b. Similarly, bending is performed while sequentially contacting the upper ends of the third and fourth holes 22c and 22d.

Accordingly, the maximum inertia force during sudden stop of the vehicle is reduced by the force while deforming the deformation protrusions 14, the impact force that the chest belt presses the chest is also reduced by that much.

Therefore, the seat belt of the vehicle according to the present invention minimizes the impact force applied to the chest belt (5a) while the deformation protrusion 14 of the support plate 10 is sequentially deformed by the operation hole 22 of the connecting piece 20, the human body Will protect the chest.

According to the seat belt of the vehicle according to the present invention as described above, not only to protect the body from being bounced off the seat during the collision of the vehicle, but also to minimize the impact force applied to the chest by the chest belt to prevent safety accidents such as heart rupture It is effective.

Claims (1)

In the seat belt, the support plate is fixed to the floor of one side of the seat and the buckle is provided at the end thereof so that the tank plate provided in the middle of the belt can be attached to and detached from the buckle. A support plate 10 having a buckle 12 at one end and a plurality of protrusions formed at a predetermined interval on the other side, The sheet is characterized in that the cross section is channel-shaped, one end is fixed to the floor portion 23, the connecting piece 20 is formed with a plurality of holes formed in the corresponding surface to increase in size toward the opposite side of the fixed end so that the projections are fitted belt.