KR100288304B1 - Load control device of car seat belt - Google Patents

Abstract

The present invention relates to a load adjusting device for a vehicle seat belt, and in the related art, when the seat belt receives a predetermined force or more immediately after a collision by overlapping a webbing near a lower anchor of a seat belt of a vehicle after a predetermined length, the sealing portion is torn off. Accordingly, the belt length was increased to control the load applied to the webbing to prevent injury to the body due to the compression of the belt. There is a problem that can not prevent the injury of the passenger's chest or head because it only reduces the load applied to.

Therefore, the present invention forms a guide hole in the lower fastening portion of the seat belt retractor bracket, and installs the retractor bracket by bolting together with the vehicle body after installing the upper and lower limiters in the guide hole, thereby applying a predetermined force to the seat belt. As the ground retractor swivels up along the guide, the force is absorbed and the force applied to the passenger's body is reduced, thereby improving the injury of the passenger's chest or head.

Description

Load control device of car seat belt

The present invention relates to a load control device for a vehicle seat belt, and more particularly, to form a guide hole in the lower fastening portion of the seat belt retractor bracket and install upper and lower limiters in the guide hole and bolt together with the vehicle body. If a certain amount of force is applied to the seat belt by installing the tractor bracket, the retractor swivels up along the guide so that the force is absorbed and the force applied to the passenger's body is reduced, thereby improving the passenger's chest or head injury. The present invention relates to a load control device for a vehicle seat belt.

In general, a seat belt of a car is installed in each seat to protect passengers from the impact on the car in case of accident, collision or collision with other cars or accidents caused by other obstacles. It is divided into 3 points, Diagonal Belt, and Full Hernes.

In other words, the two-point seat belt is also referred to as a wrap belt in the form of supporting two points on the left and right waist, where the wrap refers to the knee-to-knee joint in a sitting position and prevents the elevation of the car from being released out of the car.

The three-point belt is the most widely used belt in passenger cars, and it is a type that supports two points by fixing two points on the left and right sides and one point on the shoulder. This is a lap belt that constrains the waist and a shoulder belt that constrains the upper body. It is.

These three-point belts are called continuous three-point seat belts in which two strands are connected in a row, and the separate types are called separate three-point seat belts. It can be said that it is important to be fixed to the pelvis without being caught in the pelvis.

Diagonal belt is a two-point belt that restrains the upper body only. Also known as shoulder belt, it was used in Europe in the early stage of seat belt. It is combined with Nibolstar, and is used again as an automatic belt.

In addition, the full harness type has better restraint performance for the three-point type, but is limited to special use such as racing cars because it is complicated to install and difficult to install in the car.

As a result, a lot of three-point seat belts are usually installed in cars that are currently shipped. In the middle of the rear seat of a passenger car or a highway bus, many support points are difficult to secure, so a two-point seat belt may be installed.

In addition, these seat belts are mandatory to wear while driving, and there are many differences in the degree of injury suffered by passengers depending on whether the seat belt is worn at high speeds as well as at 30 to 40 km / h.

Looking at the elements constituting the three-point seat belt as shown in Figure 1 webbing 10 absorbs the collision energy, the retractor 20 for adjusting the length of the webbing 10, the fastening of the seat belt and It consists of a buckle 12 and a tongue plate 11 for separation, and an anchor 30 fixing the webbing 10.

Here, webbing is made of synthetic fibers such as nylon and polyester in the shape of a band having a width of about 50 mm and a thickness of about 1.2 mm. The webbing is used for shoulder belts, wrap belts, and the like. It is the part that sets the characteristics and absorbs the collision energy.

In addition, a buckle is installed on one side of the seat opposite the door to mount or release the seat belt, and a tongue plate is installed to be slidable in the webbing to be coupled to or detached from the buckle.

And the anchor is only a hardware for fixing one end of the webbing to the body in the past, but the anchor structure of the adjustable which improves the comfort when wearing by adjusting the position of the shoulder belt up and down in accordance with the dimensional physique increases. In addition to the manual adjustment type, a variety of things, such as motorized, seat position interlocking, memory mounted electric, are starting to emerge.

The retractor is a device that extends the length of the webbing by shortening or releasing the webbing for the purpose of storing the belt when the length of the webbing is adjusted or not used according to the elevation dimension or posture.

Among these retractors, ALR (Automatic Locking Retractor) is a device that can be pulled out and locked when the webbing is pulled out and locked up to the length that fits the ascending dimension. It is mainly used for waist belt because it can fix body firmly.

In addition, ELR (Emergence Locking Retractor) is a shock detection device for locking in a collision or sudden braking, the detection method is a type that detects the deceleration of the vehicle body by a pendulum, etc. There is also.

The three-point seat belt is worn after the occupant is seated on the seat with the seat belt wound in the retractor hooked to the anchor, and then grasps and pulls the tongue plate. To fit the tongue plate into the buckle fixed to the waist.

When combined as described above, the shoulder belt is pressed against the shoulders from the occupant's shoulder to the waist in the diagonal direction, that is, the chest, and at the same time, the lap belt is configured to press the occupant's pelvis from the anchor.

In such a seat belt, when the collision and sudden braking of the vehicle occur, the EMR (Emergence Locking Retractor) locks the shock sensing retractor during braking, and the length of the webbing is fixed so that the occupant is supported by the seat belt and bounces off the seat Can be prevented, but the body sustained by the supporting shoulder belt and the lap belt frequently occurred.

In the related art, as shown in the enlarged view of FIG. 1, when the webbing 10 near the lower anchor 30 overlaps a predetermined length and is sealed, and the seat belt is subjected to more than a predetermined force immediately after the collision, the sealing portion is torn off and accordingly. By increasing the length of the belt to control the load on the webbing to prevent injury to the body due to the compression of the belt.

However, it is preferable to increase the shoulder belt that presses the occupant's chest, but according to the above method, the length of the lap belt is increased so that only the load applied to the knee is reduced, thereby preventing the injury of the passenger's chest or head. there was.

Therefore, an object of the present invention is to solve the above problems, when a predetermined amount of force is applied to the seat belt during a car crash, the seat belt retractor moves along a predetermined distance, thereby reducing the load on the passenger's body. The present invention provides a load control device for a vehicle seat belt.

Such an object of the present invention is to form a guide hole of a predetermined size in the lower fastening portion of the seat belt retractor bracket and combine the upper and lower limiters with the guide hole and then bolt and nut together with the guide hole and the upper and lower limiters. Is achieved by combining

In the present invention, when a force is applied to the seat belt due to a collision or the like, when the retractor is pulled up by the force, the retractor bracket moves between the upper and lower limiters continuously absorbing energy, and a predetermined force is applied to the seat belt. It can be achieved by maintaining the following.

1 is a perspective view showing a mounting state of the seat belt is formed with a conventional load adjustment.

Figure 2 is a perspective view showing a coupling state of the retractor bracket and the body to which the load adjusting device according to the present invention is applied.

3 is a cross-sectional view illustrating a state in which the retractor bracket is deformed in FIG.

4 is a cross-sectional view taken along the line A-A 'of FIG.

Explanation of symbols for the main parts of the drawings

100: webbing 200: retractor

210: retractor bracket 211: lower fastening

212: guide ball 300: phase limiter

310: insertion hole 320: bolt hole

400: limiter 410: insertion portion

420: bolt hole

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

That is, FIG. 2 is a perspective view illustrating a coupling state of the retractor bracket and the vehicle body to which the load adjusting device according to the present invention is applied, FIG. 3 is a longitudinal cross-sectional view of FIG. 2, and FIG. 4 is A-A 'of FIG. 2. Line cross section is shown.

As shown in the drawing, the present invention includes a retractor bracket 210 having a guide hole 212 having a predetermined size in a lengthwise direction at a lower fastening portion 211; The horizontal length is larger than the guide hole 212, the vertical length is smaller than a predetermined length, the upper limiter 300 is inserted into the guide hole 212 and the bolt hole 320 and the insertion hole 310 is formed in the center; A bolt hole 420 is formed at a position corresponding to the bolt hole 320 of the phase limiter 300 to the same size as the phase limiter 300, and is fitted into the guide hole 212 to be coupled to the insertion hole 310. The inserter 410 is configured to include a limiter 400 is formed.

And the upper and lower limiters (300, 400) are installed on the upper and lower surfaces of the retractor bracket 210, the insertion portion 410 of the lower limiter 400 is inserted into the guide hole 212, the insertion portion 410 The insertion hole 310 formed in the upper limiter 300 is installed in combination.

In addition, the upper / lower limiter (300.400) and the retractor bracket 210 is coupled to the bolt 500 and inserted into the bolt hole 320 and the corresponding bolt hole 420 formed in the insertion hole 310 It is coupled to the fastening means such as the nut (600).

The combination of the upper and lower limiters 300.400 and the retractor bracket 210 is coupled to the vehicle body 700 by the bolt 500 and the nut 600.

In the configuration of the present invention, it is the most important key to set the strength of the retractor bracket 210 so that the lower side of the upper bolting portion is pulled and bent only when the tension to be pulled by the webbing 100 is more than a prescribed load. There is, this can be adjusted by the thickness of the retractor bracket 210 or by forming a slit or the like in the upper bent portion.

Reference numeral 200 in the figure is a retractor.

According to the present invention configured as described above, as shown in FIG. 3, when the passenger with the seat belt is subjected to a force to move forward in response to an impact such as a collision of the vehicle, the webbing 100 is pulled with a large force and the force thereof. The retractor 200 is transmitted to the retractor bracket 210 which is fastened.

At this time, the upper end is bolted to the vehicle body 700 and the lower end of the retractor bracket 210 which is fastened by the pressing force of the upper and lower limiters (300,400) is the load pulled to the webbing (100) upper and lower limiters (300,400) If the lower than the pressing force holding the lower portion acts as the retractor bracket 210 does not deform the position of the retractor 200 does not change.

However, when the load to be pulled by the webbing 100 is greater than the pressing force of the upper and lower limiters (300,400) holding the retractor bracket 210, the lower end of the retractor bracket 210 is guided by the guide hole (212). As shown in Fig. 3, the position of the retractor 200 is moved upward as the upper and lower limiters 300 and 400 slide up and bend under the upper bolting portion as shown in the dashed line.

Therefore, as the retractor bracket 210 moves between the upper and lower limiters (300.400) and continuously absorbs energy, the passenger's shoulder belt is extended by the length of the guide hole 212, thereby acting on the seat belt. By keeping it below 6 ~ 7 KN, it is possible to prevent passenger injuries.

As described above, the present invention forms a guide hole in the retractor bracket and installs an upper / lower limiter in the guide hole so that the retractor bracket is positioned between the upper and lower limiters so that an accident such as a vehicle collision occurs. When the seat belt is energized, the retractor moves upwards, so that the retractor bracket moves between the upper and lower limiters, continually absorbing energy and reducing the force on the passenger, thereby causing the passenger to be injured by the seat belt. It is a useful invention that can be prevented from wearing.

Claims (1)

In the car seat belt, An image limiter 300 having an insertion hole 310 including a bolt hole 320 in the center thereof; A lower limiter 400 having a bolt hole 420 formed at a position corresponding to the bolt hole 320 of the upper limiter 300 and having an insertion part 410 coupled to the insertion hole 310; The lower fastening portion 211 is formed with a guide hole 212 to be fastened between the upper / lower limiters (300, 400), the upper end of the tension pulled to the webbing (100) in a bolted fastening state to the vehicle body 700 is defined Retractor bracket 210 so that the lower side of the upper bolting portion is pulled and bent only when it is pulled more than a predetermined load; Load control device of the vehicle seat belt, characterized in that consisting of.