KR19980085407A - Height adjustment device for steering wheel - Google Patents

Abstract

The present invention relates to a height adjusting device for a steering wheel for a vehicle, and a cylindrical moving part (2) for moving the position of the steering wheel (1) to the driver side or toward the instrument panel of the vehicle body in the lower part of the steering wheel (1) ) Is installed and installed, the position adjusting means (4) for moving forward / backward by the rotation operation of the drive motor (3) is installed inside the moving part (2), the moving part (2) ) Is fixed to the sliding surface and the cylindrical fixing portion (5) which can be fixed to the position adjusting means (4) mounted on the distal end of the steering shaft has a structure provided in the lower direction of the moving part 2, electrically The steering wheel height is adjusted in various stages according to various driver's body characteristics while improving operation, improving convenience and usability as well as the driver's steering shaft according to the compression force of the inner fluid under the steering wheel when the vehicle is crashed forward. It can prevent the damage.

Description

Height adjustment device for steering wheel

The present invention relates to a height adjusting device that can adjust the height of the steering wheel in accordance with the driver's body characteristics, in particular, by adjusting the height of the steering wheel in a multi-step by the electrical operation of the motor to increase the convenience and merchandise It relates to a height adjusting device for the steering wheel.

In general, the steering device of the vehicle is a device for arbitrarily changing the progress of the vehicle, and since it is a very important device for safety due to the close correlation with the front wheel alignment, it is necessary to have a height suitable for the physical characteristics of the driver. The steering wheel is provided with a height adjusting device (Extending Device), which is a convenience device to adjust the height of the steering wheel to fit.

The conventional height adjustment device as described above is provided on the steering shaft 102 portion to which the steering wheel 101 of the vehicle is fitted, as shown in Figure 2, the steering lever 102 and the steering shaft 102 ) Is coupled to the connecting member 105 provided inside the steering shaft 102 to transfer the operating force of the operating unit 104, and the fixed portion is coupled to the connecting member 105 It is composed of a hinge moving unit 106 to be selectively released.

That is, in the height adjusting device 100 as described above, when the passenger sitting in the driver's seat operates the operating lever 103 provided at the steering shaft 102, the operation of the operating lever 103 is operated. It is transmitted to the hinge moving part 106 via the connecting member 105 via the connection, and accordingly, a range already defined around the fixed point F of the hinge moving part 106, that is, the falling range (a) to the rising range ( The steering shaft 102 is moved to b) about the fixed point F of the hinge moving unit 106.

However, since the steering wheel 101 is moved only in two stages (a, b), the conventional height adjustment device 100 has a limitation in adjusting to the body of various drivers, and thus the adjustment step Except for the special driver suitable for (a, b), the usability was limited and the merchandise was also lowered.

In addition, due to the structure of the steering shaft 102, the steering shaft 102 is pushed toward the driver during the front collision of the vehicle, there is a problem that threatens the driver's safety.

Accordingly, the present invention has been made to solve the above problems, the steering wheel height is adjusted in various stages according to the physical characteristics of the driver while being electrically operated to increase convenience and usability, as well as to the front of the vehicle It is an object of the present invention to provide a steering wheel height adjustment device for a vehicle which can prevent a driver's damage caused by a steering shaft according to a compression force of a steering shaft tip.

In order to achieve the above object, the present invention provides a cylindrical moving part connected to the lower part of the steering wheel to move the steering wheel to the driver side or toward the instrument panel of the vehicle body, and the moving motor. Positioning means that can be moved forward / backward by the rotational force of the electrical operation of the structure, and the moving part is fitted into the fixed and the cylindrical fixing portion to fix the position adjustment means to the front end of the steering shaft .

On the other hand, the first embodiment of the position adjusting means for moving the moving portion, the hydraulic cylinder is filled with a fluid therein while being installed through the connecting member via the moving portion, the hydraulic cylinder is fitted to the hydraulic cylinder in a linear reciprocating motion It is a structure provided with a piston to be stretched and a drive unit connected to the lower portion of the piston to linearly reciprocate the piston.

The piston driving part of the piston is connected to the lower part of the piston in the longitudinal direction, and a piston rod having a screw formed on the inner wall part, and a fixing member formed to cover the outer side of the piston rod to form a locking protrusion at the top and bottom to fix the piston rod. And a worm gear that moves the piston rod in the front-rear direction by the rotation of the drive motor connected to the fixing member.

In addition, according to the second embodiment of the position adjusting means for moving the moving part, the moving part is moved back and forth by the rotation of the driving motor attached to the fixing part while being engaged with the screw part formed on the inner wall part of the moving part. The worm gear is installed.

A third embodiment of another position adjusting means, which is a modification of the second embodiment of the position adjusting means, is provided with a spur gear that is engaged with a threaded portion formed on an inner wall of the moving part to move the moving part, and a spur gear of the upper and lower parts. The worm gear is inserted into and engaged with each other to transfer the power of the drive motor to each spur gear.

Therefore, the steering wheel can be stretched in the driver's direction or the instrument panel direction without even up and down flow by the electric operation of the drive motor, thereby adjusting the position of the steering wheel in accordance with the driver's body by the simple switch operation of the driver. It is adjustable.

Figure 1a is a side cross-sectional view schematically showing a height adjusting device for a steering wheel for a vehicle according to the present invention,

1B is a cross-sectional view taken along the line A-A of FIG. 1A;

Figure 2 is a side cross-sectional view schematically showing another embodiment of Figure 1a,

3 is a side cross-sectional view schematically showing another embodiment of FIG.

Figure 4 is a perspective view schematically showing a height adjusting device for a steering wheel for a vehicle according to the prior art.

Explanation of symbols on the main parts of the drawings

1: steering wheel 2: moving unit

2a: thread part 3: driving motor

4: position adjusting means 5: fixing part

6: connecting member 7: hydraulic cylinder

8 piston 9 drive unit

10: piston rod 11: fixed member

11a: Jamming 12,12a, 12b: Worm Gear

13 spur gear 13a drive shaft

F: fluid

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

Figure 1a is a side cross-sectional view schematically showing the height adjustment device for a steering wheel for a vehicle according to the present invention, Figure 1b is a cross-sectional view taken along the line AA of Figure 1a, the lower portion of the steering wheel (1) A cylindrical moving part 2 for moving the position of the steering wheel 1 toward the driver or toward the instrument panel of the vehicle body is connected and installed to rotate the driving motor 3 inside the moving part 2. Position adjusting means (4) for moving forward / backward to the moving part 2 is installed, the sliding surface of the moving part (2) is fitted and fixed, and the position adjusting means (4) to be fixed to the front end of the steering shaft The cylindrical fixing part 5 is a structure installed in the downward direction of the moving part 2.

Here, the first embodiment of the position adjusting means (4) for moving the moving part 2, the hydraulic cylinder (7) filled with the fluid (F) therein through the connecting member 6 to the moving part (2) Is installed, and the hydraulic cylinder (7) is fitted with a piston (8) for linear reciprocating motion to expand and contract the moving part (2), the drive unit 9 is connected to the lower part of the piston (8) The piston (8) is to be able to reciprocate linearly.

In addition, the driving part 9 of the piston 8 is connected to the lower part of the piston 8 in the longitudinal direction, and the piston rod 10 having a screw formed on the inner wall portion, and wraps the outer side of the piston rod 10. The piston rod 10 is formed by the rotation of the fixing member 11 and the driving motor 3 connected to the fixing member 11, the locking protrusions 11a being formed on the upper and lower sides to fix the piston rod 10. ) Consists of a worm gear (12) to move forward and backward.

For example, when the driver presses an operation switch (not shown) installed at a predetermined position in order to adjust the height of the steering wheel 1 according to his / her body shape, power is applied to the driving motor 3 to drive the driving motor. The worm gear 12 connected to the rotor 3 rotates forward, and the piston rod 10 installed to linearly move according to the rotation of the worm gear 12 pushes the piston 8 upwards. The moving part 2 of the connected steering wheel 1 is moved upward, and thus the driver can adjust the height of the steering wheel 1 by turning off the operation switch at an appropriate height.

In addition, in order to lower the height of the steering wheel (1) by operating the operation switch so that the drive motor (3) reverse rotation, the worm gear 12 is rotated in reverse direction to the piston rod (10) connected thereto The moving part 2 of the steering wheel 1 is moved downward in such a way that the height of the steering wheel 1 is lowered accordingly.

On the other hand, the operation principle of the piston rod 10 is fixed to the fixed member 11 of the drive motor 3 only linear movement, when the worm gear 12 fitted to the piston rod 10 is rotated The piston rod 10 engaged with this should rotate, but because it is fixed in the upper and lower portions by the engaging projection (11a) of the fixing member 11 will not rotate and do a linear movement.

Therefore, since the height of the steering wheel 1 is controlled by the fluid F through the operation of the piston 8 installed under the steering wheel 1, the vertical flow is eliminated and the driving force is evenly transmitted during height adjustment. The driver can easily adjust the position of the steering wheel 1 in multiple stages.

In addition, in the second embodiment of the position adjusting means 4 for adjusting the height of the steering wheel 1, as shown in FIG. 2, a screw portion 2a is formed on the inner wall of the moving portion 2. The worm gear 12a for moving the moving part 2 in the front-rear direction is engaged with the screw part 2a, and the driving motor 3 is fixed to the bottom of the fixing part 5 to fix the worm gear. The forward and reverse rotation of 12a allows the moving part 2 to move forward and backward along the worm gear 12a.

In addition, a third embodiment of the position adjusting means 4 for adjusting the height of the steering wheel 1, as shown in Figure 3, to the screw portion (2a) formed in the inner wall portion of the moving part (2) The spur gear 13 inserted into each drive shaft 13a in the up and down direction is engaged to move the moving part 2 in the front and rear directions, and the worm gear 12b is disposed between the spur gears 13 of the upper and lower parts. Is installed to transmit power to each spur gear 13, while the worm gear 12b is rotated forward and backward by the drive motor 3 to rotate the worm gear 12b. By transmitting to (13), the moving part 2 can be moved forward / backward by the rotation of the spur gears 13.

Therefore, the steering wheel 1 can be stretched in the direction of the driver or the direction of the instrument panel by the electric operation of the drive motor 3 and the rotational force of the respective gears. To adjust the position of the steering wheel (1) to fit.

As described above, according to the steering wheel height adjustment device for an automobile of the present invention, the steering wheel height is adjusted in various stages according to various physical characteristics of the driver while being electrically operated, thereby increasing convenience and usability as well as front of the vehicle. In the event of a collision, according to the compression force of the inner fluid under the steering wheel, there is an effect that can prevent the driver's damage by the steering shaft.

Claims (5)

A cylindrical moving part 2 which is connected to the lower part of the steering wheel 1 to move the position of the steering wheel 1 toward the driver or toward the instrument panel of the vehicle body, and the moving part 2 is driven. Position adjusting means (4) and the moving portion (2) is fitted and fixed to the front / back by the rotational force by the electrical operation of the rotor (3) and the position adjusting means (4) to the tip of the steering shaft Height adjustment device for a steering wheel for a vehicle made of a cylindrical fixing portion (5) to be fixed to the mounting. The hydraulic cylinder (7) of claim 1, wherein the position adjusting means (4) is installed in the moving part (2) via a connecting member (6) and filled with fluid therein. A piston 8 which is inserted and expands and contracts the moving part 2 by a linear reciprocating motion, and a driving part 9 which is connected to the lower part of the piston 8 to linearly reciprocate the piston 8. Height adjustment device for a steering wheel for cars, characterized in that. 3. The piston rod (10) according to claim 2, wherein the driving portion (9) of the piston (8) is connected to the lower portion of the piston (8) in the longitudinal direction, and has a screw rod formed on the inner wall thereof. By the rotation of the fixing member 11 and the driving motor 3 connected to the fixing member 11, the locking projection 11a is formed on the upper and lower sides while surrounding the outside to fix the piston rod 10. Height adjustment device for a steering wheel for a vehicle, characterized in that consisting of worm gear 12 for moving the piston rod 10 in the front and rear directions. The driving motor (1) according to claim 1 or 2, which is fitted to the screw portion (2a) formed on the inner wall portion of the moving portion (2) by the position adjusting means (4). Height adjustment device for a vehicle steering wheel, characterized in that the worm gear (12a) for moving the moving part 2 in the front and rear direction by the rotation of 3) is installed. The spur gear 13 according to claim 4, wherein the position adjusting means 4 is engaged with the threaded portions 2a formed on the inner wall of the movable portion 2 to move the movable portion 2, and the upper and lower portions thereof. Height of the steering wheel for the automobile, characterized in that the worm gear 12b is inserted between the spur gears 13 and simultaneously engaged to each other to transfer the power of the drive motor 3 to the spur gears 13. Regulator.