KR100558414B1 - Tilting Device of Steering Column for Automobile - Google Patents

Abstract

The present invention relates to a tilting device of a steering column for a vehicle, and rotates the lever (3) after adjusting the angle of the steering column (7) fixed to the first and second tilting shafts (21, 22) to a desired position. When the first and second tilting shafts 21 and 22 are coupled to each other, the length of the first and second tilting shafts 21 and 22 is reduced, so that the cam gear 4 is fixed at the first side portion 10. It is bitten by the gear part 16, and the locking ball 50 of the locking tool 5 is inserted into the locking groove 15 in the second side part 11 to fix the adjusted angle of the steering column 7.

In addition, even when the lever 3 is rotated to release the locking state during the collision, the locking ball 50 of the locking port 5 is inserted into the locking groove 15 of the second side 11 to be steered. The adjusted angle of the column 7 can be kept fixed.

Therefore, when the collision occurs, the steering column 7 is prevented from being lifted up by its own load by releasing the locked state of the steering column 7 so that the airbag mounted on the steering wheel operates to the normal position. It is a very useful invention that can minimize injury and greatly increase safety.

Description

Tilting Device of Steering Column for Automobile}             

1 is a perspective view showing a tilting apparatus of a conventional steering column for a vehicle.

2 is a side view of a general steering device;

Figure 3 is a perspective view showing a tilting device of the present invention car steering column.

Figure 4 is an enlarged exploded perspective view of the main portion of the tilting device of the present invention steering column for a vehicle.

5A to 5B are cross-sectional views of the use state of the present invention.

* Description of the major symbols in the drawings *

1-Retention Bracket 10-First Side

11- 2nd side 13-1st hole

14-Chapter 2 Hole 15-Hanging Groove

21-1st tilting shaft 22-2nd tilting shaft

3-Lever 4-Cam Gear

5-Locking Ball 50-Locking Ball

6-tumblers

The present invention relates to a tilt device for a steering column for a vehicle, and more particularly, to prevent the steering column from rising by releasing the locked state of the steering column in the event of a collision and increasing the safety.

In general, the steering device of the vehicle is a device for arbitrarily changing the direction of movement of the vehicle, a steering wheel that the driver can directly hold and operate, a steering shaft rotated in conjunction with the steering wheel, mounted in place of the steering shaft Operating mechanisms including a steering column and the like, including a tilting device, a telescopic device, and the like, for which additional convenience facilities for driving are installed, and a gear mechanism and a link mechanism are included.

The tilting device is a device for adjusting the installation angle of the steering column according to the physical characteristics of the driver.

In the conventional tilting apparatus, as shown in FIG. 1, both side ends are bent to face each other with a predetermined length, and the first and second side parts 10 and 11 having the long holes 12 are respectively formed, and the cowl of the vehicle body. A fixing bracket 1 fixed to the cross member;

The locking bracket 1 is coupled to the first and second side portions 10 and 11 through the long hole 12, which is coupled to each other. A tilting shaft (2);

It is coupled to the end of the tilting shaft (2), it consists of a lever (3) for switching the tilting shaft (2) to a locked or unlocked state.

In addition, the lever 3 is configured to rotate the left-bolt pressure bolt to the end of the tilting shaft (2) When the lever (3) is rotated by the first and second side parts (10, 11) The fastener 20 is pressed while being pressed to fix the tilting shaft 2 so as not to rotate.

That is, after adjusting the angle of the steering column mounted and fixed to the tilting shaft (2) by rotating the lever (3) to fix the installation angle and its position.

However, the conventional tilting device of the steering column is simply locked by the friction force of the locking bolt and the pressing bolt is pressed to the first and second side portions of the fixing bracket by the rotation of the lever, so that the lever rotates when a collision occurs When the pressurized state is released, there was a problem that the locking state of the steering column is easily released.

When the locking state of the steering column is released, the steering column is lifted upward by its own load, and the distance from the driver's side is increased, thereby reducing the driver's injury value when a collision accident occurs.                         

In addition, even when the airbag is operated, the steering column is lifted to the upper part, and thus it is not able to operate in a normally operated position, thereby reducing the efficiency of the airbag, thereby increasing the injury of the driver.

An object of the present invention is to insert the locking portion provided with the locking ball in the locking groove formed on the side of the fixing bracket when the lever is rotated when the lever is rotated when the collision occurs to fix the position of the steering column in the case of a collision accident It is to provide a tilting device for a steering column for a vehicle which can prevent the driver's injury value from increasing due to the palm-up phenomenon and increase the driver's safety.

The object of the present invention is fixed to the cowl cross member of the vehicle body, and both side ends are bent to face each other with a predetermined length so that the first and second side portions 10, the first and second long holes 13 and 14, respectively, are drilled. A fixing bracket (1) formed of 11) and having a locking groove (15) into which the locking ball (50) is inserted and caught on the outer side of the second side portion (11);

A fixed gear portion 16 provided on the first side portion 10 of the fixing bracket 1 and having teeth 16a protruding at a predetermined interval;

A lever (3) rotatably provided outside the first side portion (10) of the fixing bracket (1);

The lever 3 protrudes to a predetermined length so that an end portion penetrates the first side portion 10 and is located between the first and second side portions 10 and 11, and a screw groove is drilled inside the end portion so that the female screw portion 21a is provided. A first tilting shaft 21 formed with;

The cam which is coupled to the first tilting shaft 21 and positioned outside the first side portion 10 of the fixing bracket 1 and protruding from the fixing teeth 40 engaged with the teeth of the fixing gear portion 16 on one surface thereof. A gear 4;

At one end, a male screw portion 22a fastened to the female screw portion 21a of the first tilting shaft 21 is formed to have a predetermined length and is fastened to the first tilting shaft 21, and the other end of the fixing bracket 1 is fixed. A second tilting shaft 22 penetrating through the second long hole 14 bored in the second side portion 11 and protruding outward of the second side portion 11;

Positioned outside the second side portion 11 of the fixing bracket 1 and fixed to the other end of the second tilting shaft 22, the second side portion 11 is recessed in a surface opposite to the second side portion 11. Locking ball 50 is inserted into the locking groove 15 is achieved by being composed of a locking port 5 protruding part.

That is, the driver adjusts the angle of the steering column 7 mounted on the first and second tilting shafts 21 and 22 to a desired position, and then rotates the lever 3 so that the first and second tilting shafts are screwed together. The length of the first and second tilting shafts 21 and 22 decreases as the first and second tilting shafts 21 and 22 are engaged, so that the cam gear 4 is caught by the fixed gear portion 16 in the first side portion 10. In the side portion 11 is fixed to the adjusted angle of the steering column 7 while the locking ball 50 of the locking port 5 is inserted into the locking groove (15).

And even if the lever (3) is rotated to release the lock state in the event of a collision, the locking ball 50 of the locking port 5 is inserted into the locking groove 15 of the second side portion 11 is caught. The adjusted angle of the steering column 7 can be maintained in a fixed state.

When described in detail with reference to the accompanying drawings a preferred embodiment of the present invention.

Figure 2 is a side view showing a general steering device, showing that the steering column equipped with a steering wheel at the end is provided with a tilting device.

3 is a perspective view showing a tilting device of a steering column for a vehicle according to the present invention, in which a plurality of locking grooves are formed at both sides of the second long hole along the second long hole and formed in the second side hole of the fixing bracket. The outer side shows that the locking mechanism is provided with a locking ball that is inserted into the locking groove is located.

Figure 4 is an enlarged exploded perspective view of the main portion of the tilting device of the steering column for automobiles of the present invention, the first side portion of the fixing bracket disassembles and shows the lever, cam gear, and fixed gear.

Figures 5a to 5b is a cross-sectional view of the use state of the present invention, Figure 5a shows a locked state to fix the adjusted angle of the steering column by rotating the lever, Figure 5b is a locked state in which the steering column is fixed by rotating the lever Indicates that the steering column angle can be adjusted.

Hereinafter, as shown in FIG. 2, the steering column may be mounted on the fixing bracket 1 of the tilting device to fix the position by adjusting the mounting angle desired by the driver, and the steering column 7 may be fixed to the fixing bracket 1. A lever 3 is provided for locking and releasing the adjusted angle of the.

As shown in FIG. 3, the fixing bracket 1 is bent such that both side ends thereof face each other with a predetermined length to form the first and second side portions 10 and 11, and the first and second side portions 10, In 11), the first and second long holes 13 and 14 having a predetermined length are drilled at positions corresponding to the lengths.

On the outer side of the second side portion 11, a plurality of locking grooves 15 into which protruding portions of the locking ball 50 of the locking hole 5 to be described later are inserted into both sides of the second long hole 14 are successively several. Formed by digging.

In addition, the outer side surface of the first side portion 10 is integrally formed with a fixed gear portion 16 protruding teeth 16a at a predetermined interval.

  That is, the teeth 16a protrude integrally at a predetermined interval on the outer side of the first side portion 10 so that the outer side of the first side portion 10 forms the fixed gear portion 16.

In addition, as shown in FIG. 4, the first tilting shaft 21 is coupled to the first long hole 13 of the first side portion 10, and one end of the first tilting shaft 21 is coupled to the lever 3. And rotated by the rotation of the lever 3.

 The first tilting shaft 21 is coupled to the cam gear 4 protruding from the fixing teeth 40 engaging the teeth 16a of the fixing gear portion 16 on one surface thereof, so that the first of the fixing bracket 1 is coupled to the first tilting shaft 21. It is located between the levers 3 on the outside of the side portion 10.

One end of the first tilting shaft 21 is provided with a rotating plate 6 protruding from the anti-rotation jaw 60 to rotate together with the first tilting shaft 21, and a rear surface of the cam gear 4. On the surface opposite to the rotating plate 6, the slot groove 41 which is engaged by the anti-rotation jaw 60 is engaged is excavated.

In addition, the anti-rotation jaw 60 and the slot groove 41 of the rotating plate 6 increase the first and second tilting shafts 21 and 22 to a length capable of locking and releasing the fixed state of the steering column 7. The lever 3 is positioned to rotate only by shrinking.

That is, when the lever 3 is rotated to increase and decrease the length of the first and second tilting shafts 21 and 22 to lock and release the fixed state of the steering column 7, the anti-rotation jaw of the rotating plate 6 is prevented. (60) is caught in the slot groove 41 to limit the excessive rotation of the lever (3), the first and second tilting shaft (21, 22) when the length is increased due to this excessive rotation is separated or excessively compressed when the length is reduced This prevents the problem of damage to the parts.

Meanwhile, as shown in FIG. 5A, the first tilting shaft 21 is formed by penetrating the inside of the first tilting shaft 21, and a screw groove is drilled by a predetermined length inside the end portion of the first tilting shaft 21 to allow female threads. It forms 21a.

In addition, at one end of the first tilting shaft 21, a male screw portion 22a is formed at one end of the first tilting shaft 21 to be fastened to the female screw portion 21a of the first tilting shaft 21, and the other end thereof is the second end of the fixing bracket 1. The second tilting shaft 22 which protrudes through the second long hole 14 of the side portion 11 is fastened.

That is, when the first tilting shaft 21 is rotated by the lever 3, the second tilting shaft 22 screwed in accordance with the rotation direction is inserted and drawn out at the end of the first tilting shaft 21. , The combined length of the two tilting shafts 21 and 22 is increased and reduced.

In addition, at the end of the second tilting shaft 22, a locking ball 5 is provided with a locking ball 50 protruding from the locking ball 50 inserted into the locking groove 15 on a surface opposite to the outer side of the second side portion 11. It is fixedly installed.

In addition, although not shown, the first and second tilting shafts 21 and 22 are mounted with column fixing brackets (not shown) to which the steering column is seated and fixed to rotate the first and second tilting shafts 21 and 22. By moving along one or two long holes (13, 14) is to adjust the fixed installation angle desired by the driver.

Accordingly, as shown in FIG. 5A, when the lever 3 is rotated in a direction in which the lengths of the first and second tilting shafts 21 and 22 are reduced, the fixing teeth 40 of the cam gears 4 are fixed gear portions 16. Engaged in engagement with the teeth 16a, the locking ball 50 of the locking port 5 is inserted into the locking groove 15 dug into the second side portion 11 to fix the position of the steering column 7 will be.

In addition, when adjusting the installation angle and position of the steering column 7 again, as shown in FIG. 5B, the lever 3 is rotated in a direction in which the lengths of the first and second tilting shafts 21 and 22 are lengthened. The locking ball 50 of the locking mechanism 5 is separated from the fixing teeth 40 of the 4 and the teeth 16a of the fixing gear 16 and inserted into the locking groove 15 of the second side 11. ) Is separated from the locking groove 15 of the second side portion 11 so that the driver can adjust the installation angle and position of the steering column 7 to a desired position.

In addition, after adjusting the installation angle and position of the steering column 7 to the position desired by the driver, when the lever 3 is rotated in reverse, the locked state in which the position of the steering column 7 is fixed again is maintained.

In addition, even when the lever 3 rotates to release the locking state when a collision occurs, the locking ball 50 of the locking port 5 is inserted into the locking groove 15 of the second side portion 11. It will be caught so that the adjusted angle of the steering column 7 can be kept fixed.

According to the configuration of the present invention, it is possible to firmly maintain the fixed locking state of the steering column by the engagement of the fixed gear portion and the cam gear and the insertion of the locking groove and the locking ball.

In addition, even if the steering column is locked by the rotation of the lever in the event of a crash, the locking ball of the locking mechanism is inserted into the locking groove to maintain the installation angle and position of the steering column.

Therefore, in the event of a collision, the steering column is prevented from being lifted up by its own load by releasing the locked state of the steering column, so that the airbag mounted on the steering wheel operates to the normal position, minimizing the injury of the driver and ensuring safety. It is a very useful invention that can significantly increase the.

Claims (3)

It is fixed to the cowl cross member of the vehicle body, and both side ends are bent to face each other with a predetermined length, and are formed as first and second side portions 10 and 11 having first and second long holes 13 and 14, respectively, A fixing bracket (1) having a locking groove (15) into which the locking ball (50) is inserted and locked to the outer side of the second side portion (11); A fixed gear portion 16 provided on the first side portion 10 of the fixing bracket 1 and having teeth 16a protruding at a predetermined interval; A lever (3) rotatably provided outside the first side portion (10) of the fixing bracket (1); The lever 3 protrudes to a predetermined length so that an end portion penetrates the first side portion 10 and is located between the first and second side portions 10 and 11, and a screw groove is drilled inside the end portion so that the female screw portion 21a is provided. A first tilting shaft 21 formed with; The cam which is coupled to the first tilting shaft 21 and positioned outside the first side portion 10 of the fixing bracket 1 and protruding from the fixing teeth 40 engaged with the teeth of the fixing gear portion 16 on one surface thereof. A gear 4; At one end, a male screw portion 22a fastened to the female screw portion 21a of the first tilting shaft 21 is formed to have a predetermined length and is fastened to the first tilting shaft 21, and the other end of the fixing bracket 1 is fixed. A second tilting shaft 22 penetrating through the second long hole 14 bored in the second side portion 11 and protruding outward of the second side portion 11; Positioned outside the second side portion 11 of the fixing bracket 1 and fixed to the other end of the second tilting shaft 22, the second side portion 11 is recessed in a surface opposite to the second side portion 11. Tilting device of the steering column for a vehicle, characterized in that the locking ball (50) is inserted into the locking groove 15 is composed of a locking port (5) protruding part. 2. The tilting apparatus of claim 1, wherein a fixed gear part (16) protruding teeth (16a) is integrally formed on the outer side surface of the first side part (10). The rotating plate 6 according to any one of claims 1 and 2, wherein the anti-rotation jaw 60 protrudes from one end of the first tilting shaft 21 to rotate together with the first tilting shaft 21. ) Is provided, and the rear of the cam gear (4), the surface facing the rotary plate 6, the slot groove 41 for engaging the anti-rotation jaw 60 is coupled to the steering column for automobiles, characterized in that Tilting device.

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