KR20240040892A - Steering column for vehicle having rotation - Google Patents

Abstract

The present invention relates to a steering column for an automobile equipped with a tilt means, which includes: a hollow outer tube into which a steering shaft is inserted into one side; an inner tube inserted and mounted on the other side of the outer tube; an upper bracket that secures the outer tube to the car body; A “U”-shaped lower bracket that secures the inner tube to the car body; a fixing plate that connects and fixes both sides of the upper part of the lower bracket and has fastening holes machined therein; a hollow first hanger that passes through the fastening holes and is fixed; A tilt means is inserted downward into the first hanger and includes a second hanger that is hooked to the lower opening of the first hanger and whose lower part is fixed to the inner tube, wherein the second hanger slides up and down with respect to the first hanger. By performing the tilting of the steering column, the first hanger and the second hanger are mounted in one place and the tilting of the steering column can be performed more smoothly than in a structure in which the first hanger and the second hanger are firmly fixed in two places like a conventional lower support bracket.

Description

Steering column for vehicle having rotation}

The present invention relates to a steering column for automobiles, and more specifically, the inner tube and the lower bracket are fastened by a tilt means equipped with a fixing plate and first and second hangers, so that the inner tube and the lower bracket are fastened at one place to achieve steering. This relates to a steering column for an automobile equipped with a tilt means that allows the column to be easily tilted.

In general, the steering column of a car is provided on the outside of the steering shaft, which transmits the rotational force generated by the driver's operation of the steering wheel to the mechanism including the rack and pinion. It supports the rotation of the steering shaft and is coupled to the car body through upper and lower brackets. It is a device that fixes the position of the steering axis. Such a steering column includes a telescope device that can adjust the length of the steering wheel to suit the driver's body type, and a tilt device that can adjust the angle.

This steering column will be described with reference to FIGS. 1 and 2. 1 and 2, the steering column of a car includes a steering shaft 20 that transmits the rotational force generated by manipulating the steering wheel 10 connected to the top to the rack-and-pinion mechanism (not shown) at the bottom, and a steering shaft ( An outer tube 30 that surrounds the outer surface of the outer tube 20 and takes the shape of a pipe to enable relative sliding, an inner tube 40 inserted into the interior of the outer tube 30, and an outer tube 30 that surrounds the outer surface of the outer tube 40. ) is fixed to the vehicle body through an upper bracket 50, a lower support member 60 fixed by welding to the outer surface of the inner tube 40, a lower support member 60 and a hinge 70, etc., and the inner It may be configured to include a lower bracket 80 that secures the tube 40 to the vehicle body.

Here, the lower bracket 80 is formed to surround the inner tube 40, and a fixing hole 81 may be formed to be fixed to the vehicle body. This lower bracket 80 may be coupled to the hinge 70 to perform a tilt operation of the lower support member 60 and the steering column, which are fixed to the inner tube 40 through welding.

In addition, the lower support member 60 is fixed to the end of the inner tube 40 through welding, and both sides can be coupled to the lower bracket 80 via the hinge 70. Accordingly, the lower support member 60 can be mounted on the lower bracket 80 to enable tilt of the steering column.

However, in the tilting structure of this steering column, the inner tube 40 and the lower bracket 80 are fastened via the lower support member 60, and at this time, the lower bracket 80 and the lower support member 60 are connected to the hinge 70. As it is installed to rotate in place through the medium, the cost increases due to the large number of parts, the number of work processes is large, so long work time is required, and fixation by welding between the lower support member 60 and the inner tube 40 causes long-term fatigue. There is a risk of damage and problems that may require repair work.

Republic of Korea Patent Publication No. 10-2010-0051944 (published on May 19, 2010) Republic of Korea Patent No. 10-1248312 (announced on March 27, 2013)

The purpose of the present invention, which was devised to solve the above problems, is to tilt the steering column by fastening the fixing plate fixed to the upper and lower brackets on the distal end side of the inner tube by the first and second hangers, thereby reducing the number of parts and improving the process. The aim is to provide a steering column for an automobile equipped with a tilt means that simplifies this and allows tilting to be performed more smoothly due to a structure in which the inner tube is suspended from one fastening point.

In order to achieve the above-described object, a steering column for an automobile equipped with a tilt means according to the present invention includes: a hollow outer tube into which a steering shaft is inserted at one side; an inner tube inserted and mounted on the other side of the outer tube; an upper bracket that secures the outer tube to the car body; A “U”-shaped lower bracket that secures the inner tube to the car body; a fixing plate that connects and fixes both sides of the upper part of the lower bracket and has fastening holes machined therein; a hollow first hanger that passes through the fastening holes and is fixed; A tilt means is inserted downward into the first hanger and includes a second hanger that is hooked and mounted on an opening on the lower surface of the first hanger and whose lower part is fixed to the inner tube.

Accordingly, the second hanger can be slid up and down with respect to the first hanger to perform tilting of the steering column.

Here, the first hanger may be manufactured by having a hollow body that passes through the fastening hole of the fixing plate, an upper flange that spans the fastening hole, and an opening provided in the lower surface of the body.

Additionally, the second hanger has a threaded portion that is inserted into the body and passes through a lower opening, and an upper head portion that spans the lower opening, and the lower portion of the threaded portion can be fixed to the inner tube.

In addition, the tilt means may further include a flat surface provided on the top of the distal end of the inner tube so that the lower part of the knee thread of the second hanger penetrates the inner tube and is engaged with the nut.

As described above, according to the present invention, the first hanger is fixed at one place on the fixing plate, and the second hanger is mounted at one place on the flat surface of the inner tube, thereby simplifying the process by reducing the number of parts and fastening at one place. Due to the structure in which the inner tube is suspended at a point, the tilting of the steering column can be performed more smoothly than a structure that is firmly fixed in two places like a conventional lower support bracket.

The following drawings attached to this specification illustrate preferred embodiments of the present invention, and serve to further understand the technical idea of the present invention along with the detailed description of the invention, so the present invention is limited only to the matters described in such drawings. It should not be interpreted as such.
1 is a perspective view schematically showing a conventional steering column for an automobile.
Figure 2 is a side view of the steering column shown in Figure 1.
Figure 3 is a perspective view schematically showing a steering column for an automobile equipped with a tilt means according to a preferred embodiment of the present invention.
Figure 4 is a side view of the steering column shown in Figure 3;

Hereinafter, with reference to the attached drawings, preferred embodiments will be described in detail so that those skilled in the art can easily practice the present invention. Additionally, among the configurations mentioned in various embodiments, similar configurations and related configurations in each embodiment may be replaced, replaced, or added. However, when explaining in detail the operating principle of a preferred embodiment of the present invention, if a detailed description of a related known function or configuration is judged to unnecessarily obscure the gist of the present invention, the detailed description will be omitted.

<Configuration>

As shown in Figures 3 and 4, the steering column for an automobile equipped with a tilt means according to a preferred embodiment of the present invention transfers the rotational force generated by the operation of the steering wheel 100 connected to the top to the rack-pinion mechanism at the bottom ( (not shown), a steering shaft 110), a pipe-shaped outer tube 200 mounted to enable relative sliding while surrounding the outer surface of the steering shaft 110, and a pipe inserted and mounted inside the outer tube 200. A shaped inner tube 300, an upper bracket 400 that surrounds the outer surface of the outer tube 200 and secures the outer tube 200 to the vehicle body, a lower bracket 350 that secures the inner tube 300 to the vehicle body, and , and includes a tilt means 600 installed to enable tilting of the inner tube 300 while connecting the inner tube 300 and the lower bracket 500.

Here, the outer tube 200 is shaped like a pipe with a hollow interior, and the steering shaft 110 connected to the steering wheel 100 is inserted and mounted on one side, and the inner tube 300 is inserted and mounted on the other side. It can be.

In addition, the inner tube 300 is shaped like a pipe with a hollow interior, is inserted into the outer tube 200 and is slidably mounted, and has a flat surface 640 of a certain length on the upper surface of the tip exposed to the outside. It can be molded. A detailed description of this flat surface 640 will be described later. Here, the inner diameter of the inner tube 300 in the area where the flat surface 640 is formed may be set to enable tilting according to the diameter of the lower bracket 500.

To explain in more detail, the lower bracket 500 is formed to be larger than the diameter of the inner tube 300 and the space between the outer peripheral surface of the inner tube 300 and the lower bracket 500 is not large, so that the inner tube 300 ) can be tiltably mounted on the lower bracket 350 via the tilt means 600.

At this time, the diameter of the inner tube 300 is preferably set within a range that does not cause interference between other steering device components such as the steering shaft 110 inserted inside the inner tube 300.

Meanwhile, as shown in FIGS. 3 and 4, the tilt means 600 may include a fixing plate 610, a first hanger 620, a second hanger 630, and a flat surface 640.

Here, the fixing plate 610 is a member that connects both sides of the approximately “U”-shaped lower bracket 500. This fixing plate 610 may be provided with a slot-shaped fastening hole 611 machined in the longitudinal direction of the inner tube 300. The first hanger 620 may be inserted downward into this fastening hole 611 and engaged so that the head part is caught.

Additionally, the first hanger 620 may be processed to include a hollow body 621 and an upper flange 622. This first hanger 620 can be mounted on the fixing plate 610 by having the body 621 inserted through the fastening hole 611 of the fixing plate 610 and the flange 622 being caught. Here, the first hanger 620 may have a lower opening with a diameter smaller than the upper open surface. The diameter of this lower opening may be slightly larger than the outer diameter of the threaded portion 632 of the second hanger 630 and smaller than the diameter of the head portion 631. Accordingly, the second hanger 630 can be inserted into the first hanger 620 through the lower opening and then engaged, and a supplementary explanation for this will be provided later.

Additionally, the second hanger 630 may be processed by having a head portion 631 with a large diameter at the top and a screw portion 632 with a small diameter extending downward from the head portion 631. This second hanger 630 is inserted through the upper open surface of the first hanger 620, and then the threaded portion 632 passes through the bottom opening of the first hanger 620 and the head portion 631 is caught. , the second hanger 630 may be mounted on the first hanger 620. Accordingly, the second hanger 630 may be able to slide up and down with respect to the first hanger 620.

Additionally, the lower end of the threaded portion 632 may be bolted to the flat surface 640 of the inner tube 300. This mounting structure of the first hanger 620 and the second hanger 630 allows the second hanger 630 to slide up and down when the inner tube 300 is tilted, thereby performing tilting of the steering column. At this time, when the steering column is tilted, the first hanger 620 and the second hanger 630 may be very slightly bent forward and backward at the bottom opening area of the first hanger 620, which is similar to the slot shape of the fastening hole 611. This may be possible due to a structure such as the diameter of the opening on the lower surface of the first hanger 620 being larger than the threaded portion 632 of the second hanger 630.

Additionally, the flat surface 640 may be a portion of the distal end of the inner tube 300 where the upper portion is processed to be flat on the side. This flat surface 640 may be provided to facilitate fastening with the threaded portion 632 of the second hanger 630. Accordingly, the threaded portion 632 of the second hanger 630 may penetrate the flat surface 640 and then be fastened with a nut.

In this way, the first hanger 620 is fixed at one place on the fixing plate 610, and the second hanger 630 is mounted at one place on the flat surface 640 of the inner tube 300, and the first hanger 620 As the second hanger 630 is mounted in one place, it is different from the structure that is firmly fixed in two places like the conventional lower support bracket 60, as shown in Figure 2, and this allows the tilting of the steering column to be performed more smoothly. You can.

As described above, a person skilled in the art to which the present invention pertains will understand that the present invention can be implemented in other specific forms without changing its technical idea or essential features. Therefore, the above-described embodiments should be understood in all respects as illustrative and not restrictive. The scope of the present invention is indicated by the patent registration claims described later rather than the detailed description, and all changes or modified forms derived from the meaning and scope of the patent registration claims and the equivalent concept should be interpreted as being included in the scope of the present invention. do.

100: Steering wheel
110: Steering axis
200: Outer tube
300: Inner tube
400: Upper bracket
500: Lower bracket
600: Tilt means
610:Fixing plate
611: Fastening hole
620:1st hanger
621: Torso
622:Flange
630:2nd hanger
631:Head
632: Screw part
640: Flat.

Claims (3)

In the steering column of a car,
A hollow outer tube 200 into which the steering shaft is inserted on one side;
an inner tube (300) inserted and mounted on the other side of the outer tube (200);
an upper bracket 400 that secures the outer tube 200 to the vehicle body;
A “U” shaped lower bracket 500 that secures the inner tube 300 to the vehicle body;
A fixing plate 610 having a fastening hole 611 machined thereon while connecting and fixing both upper sides of the lower bracket 500, a hollow first hanger 620 penetrating and fastening through the fastening hole 611, this second Tilt means 600 is inserted downward into the first hanger 620 and includes a second hanger 630 that is hooked to the bottom opening of the first hanger 620 and whose lower part is fixed to the inner tube 300. ,
A steering column for an automobile equipped with a tilt means, characterized in that the second hanger 630 is slid up and down with respect to the first hanger 620 to tilt the steering column.
In claim 1,
The first hanger 620 has a hollow body 621 that passes through the fastening hole 611 of the fixing plate 610, and an upper flange 622 that spans the fastening hole 611, and the body ( An opening is provided on the lower surface of 621),
The second hanger 630 has a threaded portion 632 that is inserted into the body 621 and passes through an opening in the lower surface, and an upper head portion 631 that spans the opening in the lower surface, and the lower portion of the threaded portion 632 is A steering column for an automobile equipped with a tilt means to be fixed to the inner tube 300.
In claim 2,
The tilt means 600 is a flat surface 640 provided on the top of the distal end of the inner tube 300 so that the lower part of the threaded portion 632 of the second hanger 630 penetrates the inner tube 300 and is fastened with a nut. A steering column for an automobile equipped with a tilt means, further comprising:

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