KR20020017073A - Structure of automobile seat belt anchor having function of load limiter - Google Patents

Abstract

PURPOSE: An anchor structure for a seat belt of a vehicle is provided to prevent a passenger from being damaged by the seat belt and to improve the convenience and safety of the passenger by adopting the anchor structure having a load limiter function. CONSTITUTION: An anchor structure comprises a body(11) and a webbing supporting bar(30). A spring for absorbing an impact is installed at both lateral sections(11a) of the body(11). A spring seat for installing the spring is formed at an inner lower portion of the lateral sections(11a) of the body(11). The webbing support bar(30) is connected to a support section which is positioned parallel to a middle portion of the anchor body(11). The support section is inserted into the webbing support bar(30) through a slot(12) formed at the lateral section(11a) of the body(11). A latching end is formed at both sides of the webbing support bar(30).

Description

Structure of automobile seat belt anchor having function of load limiter

The present invention relates to an automobile seat belt anchor structure having a load limiter function, and more particularly, when the seat belt restrains a passenger, an upper portion for supporting the webbing of the vehicle seat belt normally is applied to the chest when a certain amount of force is applied to the chest. As the lower part of the anchor is crushed, the webbing support bar is moved downward, thereby reducing chest compression, but preventing the webbing from being completely released downward so that the original function of the seat belt is performed. By employing the present invention relates to a vehicle seat belt anchor structure having a load limiter function that can easily check whether the previous operation of the load limiter function that can prevent injury by the seat belt in the event of a collision, thereby improving convenience and safety.

In general, devices for protecting passengers in a collision include seat belts, air bags, shock absorbing steering columns and instrument panels.

Of these devices, seat belts are currently essential as the most effective means of reducing the acceleration on the passenger's body during a head-on collision, while preventing the passenger from jumping out of the vehicle while preventing secondary collisions or mitigating its impact. It is mounted on the vehicle.

The seat belt is a buckle that the occupant locks after riding, one side is fixed to the vehicle body, the other side anchors the seat belt, and the seat belt and the device for fixing the seat belt when the sudden force is applied It consists of a tractor, a seat belt, etc.

3 is a perspective view showing an anchor of a conventional seat belt, referring to the anchor structure of a conventional seat belt as follows.

A fixing bolt 20 for fastening the anchor body 11 to the vehicle body is fastened to the upper side of the anchor body 11, and a webbing groove 13 in the lateral direction so as to be supported by passing the webbing 50 through the lower side. ) Is provided.

To prevent this if the occupant is momentarily forward in the event of a car crash, the locking mechanism in the retractor locks the seat belt so that the occupant no longer moves forward, thereby preventing injury from collision with the steering wheel or the instrument panel. Can be.

However, as mentioned above, the occupant temporarily protects the occupant, but when the seat belt is suddenly fixed due to the action of the retractor due to the collision, the seat belt presses on the thorax of the occupant. Will receive.

In order to reduce the thrust and pressure of the occupant due to the seat belt, conventionally, one side of the seat belt webbing is sewn in multiple layers so that when a certain amount of force is applied to the chest, the webbing is loosened so that the overall length of the webbing is stretched to a certain extent. Or limit the impact force and install a load limiter on the retractor or other seatbelt component for more reliable operation, and then secure one end of the webbing through it so that a certain amount of force is applied in the event of a crash. It was allowed to stretch to some extent.

However, there is a problem that the existing load limiter mounted on the retractor can not easily check the previous operation can not determine whether the current operation.

The present invention has been made in view of the above problems, when the seat belt restrains the occupant when a certain amount of force is applied to the chest during the car crash, while the lower part of the upper anchor that supports the webbing of the car seat belt normally broken The webbing support bar is moved downwards, thereby reducing chest compressions, but not allowing the webbings to be completely displaced downwards so that the original function of the seatbelt is carried out by adopting an anchor structure having the function of a load limiter, so that the seat in a collision It is an object of the present invention to provide an automobile seat belt anchor structure having a load limiter function which can easily check whether the load limiter function has been previously operated to prevent a belt injury.

1 is a perspective view showing an anchor of a seat belt according to the present invention

Figure 2 is a main cross-sectional view showing the anchor of the seat belt according to the invention

3 is a perspective view showing an anchor of a conventional seat belt

<Explanation of symbols for the main parts of the drawings>

10a, 10b: anchor 11: anchor body

11a: body side 12: longitudinal groove

13: webbing groove 14: spring support end

16: crushing portion 20: fixing bolt

30: webbing support bar 40: shock absorbing spring

50: webbing

Hereinafter, the present invention will be described with reference to the accompanying drawings.

An automobile seat belt anchor structure having a load limiter function according to the present invention has a downwardly facing 'c' shape and includes shock-absorbing springs inside both body side portions 11a and an inner bottom surface of the body side portion 11a. Anchor body 11 is provided with a spring support end 14 for mounting the shock-absorbing spring 40 on one side and the crushing portion 16 is formed in the center of the inner bottom of the body side portion 11a, and the anchor Parallel to the middle portion of the body 11 and the support portion 34 protruding downward from both ends and the both ends is inserted into the interior through the longitudinal grooves 12 provided in the body side portion (11a) The locking end 32 provided at both ends is characterized in that the webbing support bar 30 is supported by the shock-absorbing spring 40 inside the body side portion 11a.

In particular, the crushing portion 16 is configured to break when a predetermined amount or more downward force is applied by the lower end of the support portion 34, after the crushing portion 16 is broken, the webbing support bar 30 is the vertical The locking end 32 is configured to be caught by the spring support end 14 so that the webbing support bar 30 is not completely detached from the anchor body 11 even if it moves downward along the groove 12. It features.

Generally, seat belts are divided into a diagonal wearing way from the shoulder to the chest and a horizontal wearing way from the waist to the abdomen. The upper anchor of the seat belt is fixed to the vehicle body on one side and the webbing of the seat belt is supported on the other side. It is one of the components of the seat belt assembly.

The anchor structure of the present invention is a structure in which the load limiter function of the seat belt is added to the upper anchor to prevent injury of the occupant due to the seat belt during a vehicle crash.

Hereinafter, the present invention will be described in more detail with reference to the accompanying drawings.

1 is a perspective view showing the anchor of the seat belt according to the present invention, Figure 2 is a sectional view of the main portion showing the anchor of the seat belt according to the present invention.

As shown in the drawing, the anchor body 11 according to the present invention has a 'c' shape facing downwards, and a fixing bolt 20 for fastening to the vehicle body is fastened to an upper side thereof.

In addition, both side portions (11a) of the anchor body 11 is provided with a longitudinal groove 12 is formed in the longitudinal length of the webbing support bar 30 is arranged to be parallel to the middle portion of the anchor body (11) The end is inserted into both body side 11a of the anchor body 11, and the webbing support bar 30 is moved downward when the anchor 10a of the present invention performs the load limiter function. To help.

As shown in FIG. 2, both ends of the webbing support bar 30 inserted into both body side portions 11a of the anchor body 11 are engaged with spring end portions for supporting the spring in the body side portion 11a. 32 and a support portion 34 protruding downward, the locking end 32 is supported by the shock-absorbing spring 40, the lower end of the support portion 34 in both body side (11a) It is installed in a floating state by the shock-absorbing spring 40 at a predetermined interval on the bottom.

A space is formed inside the body side portion 11a so that each end portion of the webbing support bar 30 including the locking end 32 and the support portion 34 can be inserted therein, and the body side portion 11a of A spring support end 14 is provided on an inner bottom thereof, and the impact relief spring 40 is mounted between the locking end 32 of the webbing support bar 30 and the spring support end 14.

In addition, a crushing portion 16 is provided at the center of the spring support end 14 so that the webbing support bar 30 moves downward along the longitudinal grooves 12 of the anchor body 11 when the vehicle collides. While being moved, the lower end of the support part 34 may be broken by applying an impact to the crushing part 16 with a predetermined amount or more of force.

That is, when the support 34 hits the crushed portion 16 with a certain amount or more of the impact force that the webbing 50 may injure the thorax of the occupant during the collision of the vehicle, the crushed portion 16 is broken, the crushed portion The webbing support bar 30 moves downward along the longitudinal grooves 12 of the anchor body 11 as the support part 34 passes through the hole that is formed while the 16 is broken.

As the webbing support bar 30 supporting the webbing 50 moves downward along the longitudinal grooves 12, the thrust feeling of the occupant of the occupant by the webbing 50 is reduced, thereby causing the seat belt to crash. This will prevent injuries to the occupants.

At this time, the locking end 32 of the webbing support bar 30 inserted into the body side 11a is caught by the spring support end 14, so that the webbing support bar 30 is completely detached from the anchor body 11. To prevent it.

In this way, the anchor structure of the present invention is anchored to the anchor body 11 and the webbing when a certain amount of force that can cause injury to the thorax of the occupant when the seat belt is operated so that the occupant is not injured by the forward movement during the collision By the anchor structure of the present invention composed of a support bar 30 it is possible to reduce the pressure feeling of the chest.

As described above, according to the present invention, the seat belt anchor structure for a vehicle having a load limiter function is adopted so that the original function of the seat belt is performed, and by adopting an anchor structure having the function of a load limiter, It is easy to check whether the load limiter function was previously operated to prevent injuries caused by injury, thereby improving convenience and safety.

Claims (2)

A spring support for mounting the shock-absorbing spring 40 on one side of the inner bottom surface of the body side portion 11a and including a shock-absorbing spring in both body side portions 11a as a 'c' shape facing downward. An anchor body 11 having a stage 14 and a crushed portion 16 formed at the center of the inner bottom surface of the body side portion 11a, and parallel to the middle portion of the anchor body 11, The support part 34 protruding downward from the both ends is inserted into the inside through the vertical grooves 12 provided in the both body side portions 11a, and the locking ends 32 provided at the both ends have the both body parts. Car seat belt anchor structure with a load limiter function, characterized in that consisting of a webbing support bar (30) supported by the shock-absorbing spring (40) inside the side (11a). According to claim 1, wherein the crushing portion 16 is configured to break when a certain amount of downward force is applied by the lower end of the support portion 34, after the crushing portion 16 is broken the webbing support bar 30 Even if the () is moved downward along the longitudinal groove 12, the locking end 32 is in contact with the spring support end 14 so that the webbing support bar 30 is not completely separated from the anchor body 11. Automotive seat belt anchor structure having a load limiter function, characterized in that configured to hook.