KR100449095B1 - Steering Mechanism Assembly of Steering System Having Impact Absorption Device - Google Patents

Abstract

The present invention relates to a control mechanism assembly of a steering device of a vehicle, and more particularly, to absorb or block an impact when a driver's head or chest hits a steering wheel due to a collision or a collision accident while driving a vehicle. It relates to an operation mechanism assembly of the steering apparatus for a vehicle having a.

According to an aspect of the present invention, there is provided an operating mechanism assembly including a steering wheel and a steering shaft of an automotive steering apparatus, the first shock absorbing and blocking unit disposed on the steering wheel, and the second shock absorbing and blocking unit disposed on the steering shaft. The first shock absorbing and blocking means may include a handle shock absorbing part installed on a spoke to absorb a shock applied by the driver's collision to the steering wheel rim by elastic deformation, and a signal of a shock sensor installed on the rim of the steering wheel. And a pedestal container installed at a coupling portion of the hub and the spoke of the steering wheel to explode by the second shock absorbing and blocking means, the upper steering shaft being connected to the hub of the steering handle and having a spline at the bottom thereof, A hollow cylindrical lower steering shaft formed therein for receiving a lower spline of the upper steering shaft, and the upper steering shaft and the lower steering shaft; And the axial impact comprising an elastic member provided between the adaxial absorbing portion is provided on the lower steering shaft characterized in that it comprises a barrel peony to explode by the signal of the air bag impact sensor.

Description

Steering Mechanism Assembly of Steering System Having Impact Absorption Device

The present invention relates to an operation mechanism assembly of a steering device for a vehicle, and more particularly, a device for absorbing or blocking an impact when a driver's head or chest hits a steering wheel due to a collision or a collision accident while driving a vehicle. It relates to an operation mechanism assembly of the steering apparatus for a vehicle having a.

The steering device of a vehicle is provided with a steering mechanism assembly comprising a steering wheel for adjusting the driving direction of the vehicle, a steering shaft connected to the steering wheel, and the like, and decelerating the rotation of the steering shaft and increasing the steering force of the steering wheel to be transmitted to the link mechanism connected to the wheel. And a link mechanism composed of a pitman arm, a drag arm, a knuckle arm, a tie rod, and the like, which transmit steering force to the wheel.

In addition, when the collision occurs, the steering mechanism assembly, in order to lighten the driver's injury, the steering device pops out toward the driver and the driver is injured (primary shock) and at the same time the driver is inertia to the steering wheel. It is structured to reduce the injuries (secondary shock) of the driver by being hit.

As a structure for mitigating a conventional primary shock, the steering shaft or column is compressively deformed in the axial direction to absorb shock, and the steering shaft tube is a mesh type (or corrugated tube) or a bowl type. As a structure for mitigating secondary impact, there is an additional member to the steering wheel that can perform elastic deformation or plastic deformation.

However, the above-mentioned shock absorber has a problem that the driver is injured in the accident because the steering wheel that the driver directly collides during the accident is not installed, there is a problem that the driver is injured during the accident, to compensate for this airbag It is equipped, but the driver may be hurt by the airbag rather. In addition, the risk of injury to the driver is further increased if the airbag fails to operate poorly.

In addition, the conventional shock absorber only has a function to mitigate the impact in the event of an accident, and can not block the shock, if the impact is large, there is a drawback that there is a risk that the driver collides with the steering shaft or the steering wheel and is injured by a second shock. .

The present invention is to solve the above problems, the vehicle having a vehicle that can absorb and block the primary shock when the vehicle collides with an external object and the secondary impact when the driver collides with the steering wheel. An object of the present invention is to provide an operation mechanism of a steering device.

In addition, the present invention, the shock absorbing and blocking means absorbs the impact by the elastic deformation, if the impact is greater than the prescribed value, the steering mechanism and the steering mechanism of the steering apparatus having a device that can block the impact by breaking the steering shaft and the steering wheel by the gunpowder The purpose is to provide.

In addition, the present invention provides a first shock absorbing and blocking means provided on the steering wheel and a second shock absorbing and blocking means installed on the steering shaft, the first shock absorbing and blocking means provided on the steering wheel is a second installed on the steering shaft. It is an object of the present invention to provide a device that can be operated even at a smaller impact than the shock absorbing and blocking means to more effectively protect the driver from impact.

1 is a schematic exploded perspective view showing the structure of a general steering apparatus;

2 is a schematic perspective view of an operating mechanism assembly of a steering apparatus having a first shock absorbing and blocking means according to an embodiment of the present invention;

3 is a schematic representation of a steering wheel with first shock absorbing and blocking means in accordance with the present invention;

4 is a partially enlarged view of a steering wheel having a first shock absorbing and blocking means according to the present invention;

5 is a schematic representation of another embodiment of a steering wheel with a first shock absorbing and blocking means according to the present invention;

6 is a partially enlarged view of another embodiment of a steering wheel with a first shock absorbing and blocking means according to the present invention;

7 is a schematic cross-sectional view of a steering shaft having a second shock absorbing and blocking means according to the present invention.

<Short description of symbols>

110 Rim 120 Spokes

130 hub 125 peony

210 Upper Steering Shaft 220 Lower Steering Shaft

230 Bracket Shaft 260 Peony Box

The present invention for achieving the above object, in the operating mechanism assembly comprising a steering wheel and a steering shaft of the steering device for a vehicle, the first shock absorbing and blocking means provided on the steering handle, and the first installed on the steering shaft And a shock absorbing and blocking means, wherein the first shock absorbing and blocking means includes: a handle shock absorbing part installed on the spoke to absorb the impact applied by the driver's collision to the steering wheel rim by elastic deformation, and the steering wheel And a pedestal container installed at a coupling portion of the hub and the steering wheel of the steering wheel to explode by a signal of an impact sensor installed on the rim, wherein the second shock absorbing and blocking means is connected to the hub of the steering wheel and has a spline at the bottom thereof. And the upper steering shaft having a hollow cylindrical lower steering shaft formed therein with a spline for accommodating the spline of the upper steering shaft. And a shaft shock absorbing part including an elastic member installed between the upper steering shaft and the lower steering shaft, and a peony tube installed on the lower steering shaft to explode by a signal of an airbag impact sensor. do.

The handle shock absorbing unit comprises a plurality of rods, one end of which is connected to the rim, and one end of which receives the rod at one end corresponding to each rod, and the other end is coupled to the hub, and a spring housed inside the cylinder. do.

The handle shock absorbing unit has a plurality of first spokes, one end of which is fixed to the rim, a plurality of second spokes of which one end is rotatably coupled to the other end of the respective spokes, and one end of which is connected to the first spoke. And the other end includes a spring fixed to the second spoke.

The spring stiffness of the handle shock absorbing portion is smaller than the stiffness of the spring of the axial shock absorbing portion.

The material of the spokes of the site where the peony barrel of the first shock absorbing and blocking means is installed is made of synthetic resin. The material of the spokes of the site of installation of the peony container of the second shock absorbing and blocking means is made of synthetic resin. It features.

Hereinafter, with reference to the accompanying drawings, a preferred embodiment of the present invention will be described.

1 is a schematic exploded perspective view showing the structure of a general steering apparatus, and FIG. 2 is a schematic perspective view of an operation mechanism assembly of a steering apparatus having a first shock absorbing and blocking means according to an embodiment of the present invention.

As shown in Figure 1, the manipulator structure assembly of the steering apparatus for a vehicle is composed of a steering wheel portion 100 for adjusting the traveling direction of the vehicle, and a steering shaft portion 200 connected to the steering wheel portion.

In the operation mechanism assembly according to an embodiment of the present invention shown in Figures 2 to 4, the steering wheel portion 100 is composed of a rim 110, a plurality of spokes 120 and the hub 130, steering The shaft portion 200 is composed of a bracket shaft 230 for supporting the upper steering shaft 210 and the lower steering shaft 220. In addition, the spokes 120 are fixed to the rim 110 while being inclined at a predetermined angle from the hub 130.

The operating mechanism assembly of the present embodiment is characterized in that the steering wheel portion and the steering shaft portion are provided with first and second shock absorbing and blocking means capable of absorbing and blocking an impact during a collision of the vehicle. The first shock absorbing and blocking means is installed in the steering wheel part 100, and the second shock absorbing and blocking means is installed in the steering shaft part 200.

The first shock absorbing and blocking means is to prevent the driver from being injured by the head or chest hitting the steering wheel part 100 by the inertia during the collision of the vehicle. The first shock absorbing and blocking means is installed on the handle shock absorbing unit and the steering wheel rim installed in the spoke 120 to absorb the impact applied when the driver collides with the rim 110 of the steering handle by the elastic deformation. It includes a peony container 125 installed at the coupling portion of the hub and the spoke of the steering wheel to explode by the signal of the impact sensor 140.

3 is a schematic view of a steering wheel with a first shock absorbing and blocking means according to the present invention, and FIG. 4 is a partial enlarged view of a steering wheel with a first shock absorbing and blocking means according to the present invention.

3 and 4, in one embodiment of the present invention, the handle shock absorbing part installed in the spoke has a plurality of rods 122 having one end connected to the rim 110 and one end corresponding to each rod. In the rod and the other end is composed of a cylinder 121 coupled to the hub, and a spring 123 accommodated in the cylinder. However, instead of the spring 123 installed inside the cylinder 121, the fluid may be sealed and filled with a material capable of absorbing the impact to act as a damper.

As shown in Figure 4, the impact blocking means of the first shock absorbing and blocking means is provided in the peony container 125 is installed in the portion where the cylinder 121 is coupled to the hub, and is installed on the rim electrically connected to the peony container It consists of a plurality of sensors 140. Although not shown, the sensor is connected to the electronic control unit input terminal of the vehicle, the electronic control so that the peony 125 is instantaneously ignited when any of the plurality of sensors 140 detects a shock of a certain intensity or more. The output end of the device is electrically connected to the peony container. Therefore, when the vehicle collides with an external object and the driver hits the steering wheel, first, the spring 123 of the spoke 120 compresses and deforms to absorb some of the impact energy to mitigate the impact, and at the same time, the impact is defined in the sensor. In the case of more than the intensity, the sensor is operated to ignite the powder of the peony barrel to cut the spokes by the explosive power of the gunpowder to completely block the impact.

5 is a schematic diagram of another embodiment of a steering wheel with a first impact absorbing and blocking means according to the present invention, and FIG. 6 is a part of another embodiment of a steering wheel with a first impact absorbing and blocking means according to the present invention. It is an enlarged view.

5 and 6, in the present embodiment, the handle shock absorbing unit has a plurality of first spokes 127, one end of which is fixed to the rim 110, and the other end of each of the first spokes 127. A plurality of second spokes 126, one end of which is rotatably coupled by an external force, and one end of which is connected to the first spoke 127, and the other end of the spring 128 is fixed to the second spoke 126. Include. Coupling portions of the first spoke and the second spoke are formed with the concave-convex curved surfaces 121a and 122a so as to be rotatable, and the coupling pins 129 fitted into the concave-convex curved surfaces 121a and 122a of the first and second spokes 127 and 126. ) In particular, the spring 128 has a moderate rigidity and is maintained firmly by the external force applied during normal operation. However, when the strong external force in a collision is momentarily operated, the spring is impacted while being tensioned as opposed to the embodiment of FIG. It is designed to absorb water.

In addition, as shown in Figure 6, the lower part of the second spoke 126 is provided with a peony to block the impact. As shown in Figures 4 and 6, the portion of the peony is installed may be installed with a synthetic resin material (125a) to be more easily cut by the explosion of the gunpowder, the rod 122 and the first spoke ( 127 is connected to the metal rim frame 110a constituting the rim 110, the metal rim frame 110a is wrapped by a synthetic resin. Reference numeral 121b denotes the second spoke 126. It is a hole formed so that the coupling pin 129 is fitted.

Figure 7 is a schematic cross-sectional view of one embodiment of a steering shaft portion having a second shock absorbing and blocking means according to the present invention.

As shown in FIG. 7, in the present embodiment, the second shock absorbing and blocking means is connected to the hub 130 of the steering wheel and has an upper steering shaft 210 having a spline 211b formed therein, and A hollow cylindrical lower steering shaft 220 having a spline for accommodating the splines 211b of the upper steering shaft 210 and an elastic member 250 provided between the upper steering shaft and the lower steering shaft. Include.

In the present embodiment, the upper steering shaft 210 has a bolt forming portion 211a for fastening with the hub 130 at one end, and the other end formed with a spline is accommodated in the lower steering shaft 220. The disk portion 211c is expanded in diameter so as not to be separated by the pressure by the spring is formed. The inner space of the lower steering shaft 220 is divided into a first space for accommodating the upper steering shaft 211 and receiving a spline on an inner surface thereof and a second space for accommodating a spring. When the vehicle collides with an external object, the upper steering shaft 210 enters into the lower steering shaft 220 while compressing the spring (elastic member) 250, so that the impact at the time of the collision is caused by the spring 250. Absorption will mitigate the impact.

In addition, the portion of the bracket shaft 230 of the lower steering shaft 220 is installed, the inside is blocked to press the spring, the peony tube 260 is installed below. Although not shown in the drawing, the powder and ignition devices are built into the peony container 260, and the ignition device is electrically connected to an output terminal of the electronic control device of the vehicle. When the vehicle collides, the medicine container 260 is exploded in accordance with a signal of a collision detection sensor for operating the airbag. When the bottle is exploded, the steering shaft is cut off, and thus the steering shaft is moved to the driver's seat side, thereby preventing the driver from pressing the driver, thereby completely blocking the impact.

In addition, the portion 240 of the peony barrel 260 of the second shock absorbing and blocking means is installed in Figure 2 and 7, the material is made of synthetic resin, it can be easily broken when the peony explosion explodes effectively block the impact. It is desirable to.

In particular, in the present invention, the rigidity of the spring 123 provided in the handle shock absorbing portion constituting the first shock absorbing and blocking means is smaller than the spring stiffness of the second shock absorbing and blocking means. Therefore, when the vehicle collides, the steering wheel shock absorber first absorbs the impact that the driver hits the steering wheel. In this case, the spring coefficients of the plurality of handle shock absorbers are absorbed primarily by the spring of the steering wheel when the force of about 10 kg is applied and absorbs the impact by the secondary when more force is applied. It is desirable to be able to absorb.

As described above, according to the present invention, it is possible to absorb and block the primary shock when the vehicle collides with an external object and the secondary shock when the driver collides with the steering wheel, thereby effectively protecting the driver. do.

In addition, according to the present invention, the shock absorbing and blocking means absorbs the shock by the elastic deformation, and when the impact is above the prescribed value, the steering shaft and the steering wheel can be broken by the gunpowder to block the shock, thereby more completely preventing the driver. You can protect it.

In addition, according to the present invention, the first shock absorbing and blocking means installed on the steering wheel can be operated even at a smaller impact than the second shock absorbing and blocking means installed on the steering shaft, thereby protecting the driver from impact more effectively.

An embodiment of the present invention described above and illustrated in the drawings should not be construed as limiting the technical spirit of the present invention. The scope of protection of the present invention is limited only by the matters described in the claims, and those skilled in the art can change and change the technical spirit of the present invention in various forms. Therefore, such improvements and modifications will fall within the protection scope of the present invention, as will be apparent to those skilled in the art.

Claims (6)

In the operating mechanism assembly comprising a steering wheel and a steering shaft of a vehicle steering device, A first shock absorbing and blocking means installed on the steering wheel, and a second shock absorbing and blocking means installed on the steering shaft, The first shock absorbing and blocking means includes a handle shock absorbing part installed in the spoke to absorb the impact applied by the driver's collision to the steering wheel rim by elastic deformation; And a peony container installed at a coupling portion of the hub and the spoke of the steering wheel to explode by a signal of an impact sensor installed on the rim of the steering wheel, The second shock absorbing and blocking means is connected to a hub of the steering wheel and has an upper steering shaft formed with a spline at a lower portion, and a hollow cylindrical lower steering shaft having a spline therein for accommodating the spline of the upper steering shaft. And an axial shock absorbing unit including an elastic member installed between the upper steering shaft and the lower steering shaft. And a peony container installed on the lower steering shaft so as to explode by a signal of an airbag impact sensor. The method of claim 1, The handle shock absorbing unit comprises a plurality of rods, one end of which is connected to the rim, and one end of which receives the rod at one end corresponding to each rod, and the other end is coupled to the hub, and a spring housed inside the cylinder. Assembly of the operating mechanism of the steering device for a vehicle. The method of claim 1, The handle shock absorbing unit has a plurality of first spokes, one end of which is fixed to the rim, a plurality of second spokes of which one end is rotatably coupled to the other end of the respective spokes, and one end of which is connected to the first spoke. And the other end comprises a spring fixed to the second spoke. The method according to claim 2 or 3, The spring stiffness of the handle shock absorbing unit is smaller than the rigidity of the spring of the axial shock absorbing unit. The method according to any one of claims 1 to 3, Spoke device assembly of the vehicle steering apparatus, characterized in that the material of the spokes of the portion where the peony barrel of the first shock absorbing and blocking means is made of synthetic resin. The method according to any one of claims 1 to 3, The material of the spokes of the site where the peony barrel of the second shock absorbing and blocking means is installed is made of synthetic resin.