KR101083938B1 - Tilt And Telescope Device For Steering Column - Google Patents

Abstract

The present invention relates to a tilt and telescope device of a steering column.

The present invention includes an outer tube having a steering shaft therein, an inner tube inserted into the outer tube, and an upper bracket and a lever having a tilt bracket having a long hole formed at both sides and fixing the outer tube to the vehicle body. A tilt and telescope apparatus for a column, comprising: a guide member provided on one outer surface of the tilt bracket, the guide member being formed on one surface, and having a stepped portion protruding upward on both sides; An inclined member provided in close contact with the guide member and having an insertion hole communicating with the guide hole and having an inclined surface inclined at a predetermined angle on a circumferential surface of the insertion hole; And a friction force providing means penetrating through the tilt bracket, one side of which is inserted into the insertion hole of the inclined member and in which an inclined portion is in contact with the inclined surface.

According to the present invention, the friction member between the inclined member and the guide member is increased by providing a guide member and an inclined member on one side of the tilt bracket and pressing the inclined member by the inclined portion during the tilt operation by inserting the tilt bolt having the inclined portion. It minimizes the noise and improves the supporting force and operation feeling.

Steering Column, Tilt, Friction, Inclined, Moving Gear, Drive Gear

Description

Tilt And Telescope Device For Steering Column

1 is a view schematically showing a steering column according to the prior art,

2 is a cross-sectional view illustrating main parts of a tilt and telescope device of a steering column according to the related art;

3 is a view showing a steering column according to a preferred embodiment of the present invention;

4A is an exploded perspective view showing a tilt and telescope device of a steering column according to a preferred embodiment of the present invention;

4B is a cross-sectional view illustrating main parts of a tilt and telescope device of a steering column according to a preferred embodiment of the present invention;

5A and 5D are operating state diagrams illustrating a process of operating a tilt and telescope device of a steering column according to a preferred embodiment of the present invention.

<Explanation of symbols for the main parts of the drawings>

302: steering shaft 304: lever

310: outer tube 320: inner tube

330: upper bracket 332: tilt bracket

334 capsule 336: the long hole

340: lower bracket 342: coupling hole

344: tilt hinge 350: friction force providing means

352: head 354: inclined portion

360: tilt device 370: guide member

380: inclined member 412: flat portion

414: guide ball 416: step

420: fixing member 422: extension piece

424: projection 430: support member

432: sliding groove 440: slope

442: first inclined surface 444: second inclined surface

446: insertion hole

The present invention relates to a tilt and telescope device of a steering column. In more detail, a guide member and an inclined member are provided on one side of the tilt bracket, and a tilt bolt having a inclined portion is inserted to press the inclined member by the inclined portion during tilt operation, thereby increasing the friction force between the inclined member and the guide member. A tilt and telescope device for a steering column that minimizes noise and improves support and operation.

In general, as the competition in the automobile market is intensifying and the demands of consumers are diversified, the desire for more driver-oriented intelligent cars is increasing. One of these trends is that the driver can easily hold the steering wheel and drive comfortably. Tilt-and-telescope steering with a drive motor that adjusts the relative position of the steering wheel relative to the driver is being expanded.

Here, the tilt and telescope steering system means adjusting the position of a steering wheel used in a car, and the steering device includes a tilt device and a telescope device. Tilt device adjusts the fixed angle of steering wheel up and down according to driver's posture sitting in driver's seat. Telescope device adjusts the distance between steering wheel and driver by stretching the length of steering column to fit the driver's body type. .

1 is a schematic view of a steering column according to the prior art, and FIG. 2 is a cross-sectional view illustrating main parts of a tilt and telescope device of the steering column according to the prior art.

As shown, the tilt and telescope device of the steering column according to the prior art is a hollow outer tube 110, the inner tube 120 is inserted into the outer tube 110 having a steering shaft 102 therein. The lower bracket 130 is fixed to the vehicle body together with the inner tube 120 and is provided on both sides of the outer tube 110 and the lower bracket 130 having the tilt hinge 132, and the vehicle body through the capsule 142 together with the outer tube 110. Tilt bracket 150 connected to the upper bracket 140, the upper bracket 140 and the tilt long hole 152 is fixed to the bottom of the outer tube 110, fixed to the lower portion of the tilt bracket 150 is provided The adjustment bracket 180 and the tilt bracket (140) passing through the distance bracket 160 supporting the outer tube 110 and the tilt bracket 150 and the tilt long hole 152 and engaging the cam 170 and the lever 175. 150 and the movable gear 195 to be engaged or separated from the fixed gear 190 and the fixed gear 190 is provided on one side It is configured to include.

In the tilt and telescope apparatus according to the related art, the fixed gear 190 and the movable gear 195 are engaged with each other by the rotation of the cam 170 by the operation of the lever 175. Press and press the tilt bracket 150 and the distance bracket 160 is in close contact with each other while the steering column, that is, the outer tube 110 is fixed in the tilt direction.

In addition, when the lever 175 is operated for the tilting operation, the movable gears 195 engaged with each other by the cam 170 rotating together with the lever 175 are separated from the fixed gear 190, thereby tilting the bracket. As the pressure that is pressing the 150 also disappears, the adhesion between the tilt bracket 150 and the distance bracket 160 is eliminated, so that the steering column, that is, the outer tube 110, is tilt tilted 132 of the lower bracket 130. Tilt operation will be enabled.

However, as described above, when the tilt operation is operated by the fixed gear 190 and the movable gear 195, as shown in Figure 2, by the respective gear teeth for the displacement of the steering wheel during the tilt operation. There was a problem in that the settable section 210 in which the steering wheel could be set by the tilt operation and the settable section 220 in which the steering wheel could not be set by the tilt operation occurred.

In other words, the settable section 210 is a section in which gears of the fixed gear 190 and the movable gear 195 are engaged or separated, and the outer tube 110 is tilted or fixed. The non-set section 220 has a fixed number of stages by the gears of the fixed gear 190 and the movable gear 195, and refers to a section between the stages, or a section corresponding to the number of stages. For example, if the deflection of the steering wheel is 60 mm and the number of stages of the fixed gear 190 and the movable gear 195 is 6, the 10 mm section between the gear stage and the gear stage cannot be set. It corresponds to the impossible section 220.

In addition, the tilt of the gear of the fixed gear 190 and the mountain of the gear of the movable gear 195 does not find a seat there was a problem that the tilt operation is not made smoothly.

In order to solve this problem, the present invention includes a guide member and an inclined member on one side of the tilt bracket, and by inserting the tilt bolt formed with the inclined portion to press the inclined member by the inclined portion during the tilt operation, the inclined member and the guide member The purpose is to increase the friction between the liver to minimize noise and to improve the support and operating feeling.

In order to achieve the above object, the present invention provides an outer tube having a steering shaft therein, an inner tube inserted into the outer tube, and a tilt bracket having long holes formed at both sides while fixing the outer tube to the vehicle body. A tilt and telescope apparatus of a steering column including an upper bracket and a lever, the tilting and telescope apparatus comprising: a guide member having a guide hole formed on one side of the tilt bracket and protruding upwards on both sides; An inclined member provided in close contact with the guide member and having an insertion hole communicating with the guide hole and having an inclined surface inclined at a predetermined angle on a circumferential surface of the insertion hole; And a friction force providing means penetrating through the tilt bracket, one side of which is inserted into the insertion hole of the inclined member and in which an inclined portion is in contact with the inclined surface.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. First, in adding reference numerals to the components of each drawing, it should be noted that the same reference numerals are used as much as possible even if displayed on different drawings. In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear.

3 is a view showing a steering column according to a preferred embodiment of the present invention.

As shown, the steering column according to a preferred embodiment of the present invention is the outer tube 310, the inner tube 320, the outer tube 310 is inserted into the outer tube 310 having a steering shaft 302 therein. ) And the inclined portion 354 through the upper bracket 330 having the tilt bracket 332 on both sides, the lower bracket 340 for fixing the inner tube 320 to the vehicle body, and the tilt bracket 332. ) Is formed and is provided on one surface of the tilting force providing means 350 and the tilt bracket 332 to provide a frictional force, and comprises a tilting device 360 for supporting or fixing the tilting operation by the frictional force.

The outer tube 310 takes the shape of a pipe having a hollow inside, and is provided with an aberration shaft 302 connected to a steering wheel (not shown) therein, and an inner tube 320 is inserted along an inner circumferential surface thereof. A distance bracket is provided below the outer tube 310, and fixed to the outer tube 310 by a method such as welding.

The inner tube 320 is inserted into the outer tube 310 but the inside is hollow and coupled to the outer tube 310 so as to be slidable. One end of the inner tube 320 is provided with a lower bracket 340 to support the inner tube 320 and to fix the inner tube 320 to the vehicle body.

The upper bracket 330 is provided outside the outer tube 310 to support the outer tube 310 and at the same time to fix the outer tube 310 to the vehicle body. In addition, both sides of the bent tilt bracket 332 is provided, the upper both sides are provided with a capsule 334 is a structure that is fixed to the vehicle body via the capsule 334. In addition, one surface of the tilt bracket 332 is formed with a long hole 336 for the tilt operation.

The lower bracket 340 is formed to surround the inner tube 320 and the coupling hole 342 is formed to be fixed to the vehicle body on the upper side. In addition, both sides of the lower bracket 340 is provided with a tilt hinge 344 to enable tilt adjustment so that the steering column 300 rotates about the tilt hinge 344.

The frictional force providing means 350 penetrates through the long hole 336 formed in the tilt bracket 332, and is coupled to the tilting device 360 on one side and the other end as a kind of fixing bolt fastened to the lever 304 on the other side. An inclined portion 354 inclined at a predetermined angle is formed in the head 352, which is an end of the frictional force providing means 350, which is combined with the apparatus 360 to provide the frictional force to the tilting device 360. The frictional force providing means 350 is in close contact with the tilting device 360 when the lever 304 is operated, thereby generating a tensile force and providing the frictional force to the tilting device 360 by the tensile force.

Here, the inclined portion 354 is formed to be inclined while projecting downward toward the axial center side of the frictional force providing means 350 at the end of the head 352, that is, both sides of the head 352, that is, the frictional force providing means of the 350 It is formed to correspond to each other based on the axial center, and preferably formed at the same angle as the inclined surface 440 of the tilt device 360 to be described later.

The tilt device 360 supports or fixes the operation of the tilt by the operation of the lever. The tilt device 360 is mounted on the guide member 370 and the guide member 370 fixed or coupled to an outer surface of the tilt bracket 332 to provide frictional force. And an inclined member 380 which fixes the operation of the tilt by the frictional force provided from 350.

4A is an exploded perspective view showing a tilt and telescope device of a steering column according to a preferred embodiment of the present invention. 4B is a cross-sectional view illustrating main parts of a tilt and telescope apparatus of a steering column according to a preferred embodiment of the present invention.

As shown, the guide member 370 is formed in the shape of the cross-section 'c' is fixed or coupled to the outer surface of the tilt bracket 332, the flat portion 412 of the guide member 370 A guide hole 414 is formed in the guide hole 414, and the guide hole 414 is preferably formed at the same position as that of the long hole 336, and a stepped part 416 protruding upward from both sides of the guide member 410 is formed. do.

Such a guide member 370 may be fixed through the tilt bracket 332 and various fastening means such as fixing bolts and screws, or may be coupled through welding or the like. However, the present disclosure is not limited thereto, and the guide member 370 may be fixed or coupled to the tilt bracket 332 so as to be stable and completely in contact with each other. will be.

The inclined member 380 is formed with an insertion hole 446 communicating with the guide hole 414 formed in the guide member 370, the inclined surface 440 inclined at a predetermined angle on the outer peripheral surface of the insertion hole 446 Is formed, the frictional force providing means 350 is inserted into the inclined member 380 so that the inclined portion 354 formed on the frictional force providing means 350 and the inclined surface 440 formed on the inclined member 380 contact each other. The inclined portion 354 and the inclined surface 440 slide into each other to provide a friction force to the inclined member 380 when the lever 304 is operated.

The inclined member 380 includes a fixing member 420 which is in close contact with the plane portion 412 of the guide member 370 and a supporting member 430 that is coupled to the fixing member 420 but is slidably movable. It is composed.

In addition, the inclined surface 440 is formed on the fixing member 420 and the supporting member 430, and the first inclined surface 442 formed on the fixing member 420 and the second inclined surface 444 formed on the supporting member 430. It may be configured as), and is formed at the same angle as the inclined portion 354 of the frictional force providing means 350.

The fixing member 420 is provided to be in close contact with the planar portion 412 of the guide member 370, and the extension pieces 422 are formed to extend at both ends thereof, and the inner ends of the extension pieces 422 protrude inwards. The protrusion 424 is formed. The fixing member 420 has a first inclined surface 442 is formed between each of the extension pieces 422 formed on both sides, the first inclined surface 442 and the inclined portion 354 of the frictional force providing means 350 and It is preferably formed at the same angle.

The support member 430 is slidably coupled to the fixing member 420, and sliding grooves 432 are formed at both surfaces of both sides of the supporting member 430 so that the protrusions 424 of the fixing member 420 are inserted to slide together. Is formed. In addition, a second inclined surface 444 is formed at one end of the support member 430, where the second inclined surface 444 formed in the support member 430 is a first inclined surface 442 formed in the fixing member 420. It is preferably formed in a portion corresponding to the angle, and the angle is also formed at the same angle as the first inclined surface 442 formed on the fixing member 420.

In addition, when the fixing member 420 and the support member 430 are completed to slide each other, the insertion hole 446 into which the frictional force providing means 350 is inserted between the first inclined surface 442 and the second inclined surface 444. Is formed and the approximate shape of the first inclined surface 442 and the second inclined surface 444, that is, the approximate shape of the outer circumferential surface of the insertion hole 446 is the first inclined surface 442 and the second inclined surface 444. Take the shape of '◇' gradually getting smaller toward the upper and lower sides of the or take the shape of a hexagon.

In the tilt and telescope apparatus of the steering column according to the preferred embodiment of the present invention configured as described above, the inclined member 380 is in close contact with the flat part 412 of the guide member 370 fixed or coupled to the tilt bracket 332. And a frictional force providing member 350 inserted into the insertion hole 446 formed in the inclined member 380 to penetrate the guide hole 414 of the guide member 370 and the long hole 336 of the tilt bracket 332. Next, one end of the friction force providing member 350 and the lever 304 are fastened.

5A and 5D are operating state diagrams illustrating a process of operating a tilt and telescope device of a steering column according to a preferred embodiment of the present invention.

As shown, the tilt and telescope apparatus of the steering column according to the preferred embodiment of the present invention operates the lever 304 for fixing the steering column after the tilting operation, as shown in FIG. 350 moves to the lever 304 side, and the inclined portion 354 contacts the inclined surface 440 formed on the inclined member 380 and pushes the inclined surface 440 toward the stepped portion 416 of the guide member 370. Move. At this time, since the inclined member 380 is in close contact with the guide member 370, the inclined portion 354 of the frictional force providing means 350 is provided with the guide member 370 toward the stepped portion 416 of the guide member 370. As the friction moves, the guide member 370 and the inclined member 380 generate a frictional force, and the steering column after the tilting operation is fixed by the frictional force.

That is, when the lever 304 is operated to fix the steering column, the frictional force providing means 350 engaged with the lever 304 tries to move toward the lever 304 and the inclined member 380 moves the frictional force providing means 350. Since the inclined portion 354 and the inclined surface 440 of the inclined member 380 move while sliding with each other, the friction force providing means 350 tries to move toward the stepped portion 416 side of the guide member 370, as shown in FIG. 5B. As shown, the tension force P in the opposite direction to which the frictional force providing means 350 is intended to move is generated.

Accordingly, the guide member 370 and the inclined member 380 generate more frictional force through the tensile force P, so that the steering column can be fixed only by the frictional force, thereby improving the bearing force, and the conventional angle. Problems that occur between the gear teeth can overcome the phenomenon of deterioration of operation.

In addition, as shown in FIG. 5C, when an external force is applied to the frictional force providing means 350 in which the tensile force P is generated, the frictional force providing means 350 is an upper side P1 of the insertion hole 446 of the inclined member 380. Or moving to the lower side (P2), the fixing member 420 and the support member 430 is in close contact with the stepped portion 416 and the flat portion 412 of the guide member 370, the insertion hole 446 Since the shape is formed in a '◇' shape that gradually decreases toward the upper side P1 or the lower side P2, the frictional force providing means 350 is the upper side P1 or the lower side P2 of the insertion hole 446 by an external force. As shown in FIG. 5D, a tensile force P ′ is generated in the fixed member 420 and the support member 430 of the inclined member 380 to obtain a greater support force.

Accordingly, the inclined member 380 has another tensile force P 'in a direction perpendicular to the plane (the direction perpendicular to the axial direction of the friction force providing means 350) with respect to the direction in which the friction force providing means 350 is to move. As shown in the conventional gear type, the steering column is generated only by the operation of the lever 304 without the non-settable section 220, which cannot be set by the stages between the gear teeth. It can be fixed to maximize steering.

The foregoing description is merely illustrative of the technical idea of the present invention, and various changes and modifications may be made by those skilled in the art without departing from the essential characteristics of the present invention. Therefore, the embodiments disclosed in the present invention are not intended to limit the technical idea of the present invention but to describe the present invention, and the scope of the technical idea of the present invention is not limited by these embodiments. The protection scope of the present invention should be interpreted by the following claims, and all technical ideas within the equivalent scope should be interpreted as being included in the scope of the present invention.

As described above, according to the present invention, the inclined member is provided by providing a guide member and an inclined member on one side of the tilt bracket, and inserting friction force providing means in which the inclined portion is formed to press the inclined member by the inclined portion during tilt operation. Increasing the friction between the guide members to minimize the noise and has the effect of improving the support and operating feeling.

Claims (4)

Tilt of the steering column including an outer tube having a steering shaft therein, an inner tube inserted into the outer tube, and an upper bracket and a lever provided with a tilt bracket fixing the outer tube to the vehicle body and having long holes formed at both sides thereof. In the telescope device, A guide member provided on one outer surface of the tilt bracket and having a guide hole formed on one surface thereof, and having a stepped portion protruding upward from both sides; An inclined member provided in close contact with the guide member and having an insertion hole communicating with the guide hole and having an inclined surface inclined at a predetermined angle on a circumferential surface of the insertion hole; And A friction force providing means penetrating the tilt bracket, one side is inserted into the insertion hole of the inclined member and the inclined portion is in contact with the inclined surface Tilt and telescope device of the steering column comprising a. The method of claim 1, The insertion hole is a tilt and telescope device of the steering column, characterized in that formed in any one of the shape of '◇' or the shape of the hexagon gradually smaller toward the upper side and the lower side. The method of claim 1, And the inclined portion and the inclined surface are inclined at a predetermined angle. The method of claim 1, The inclined member is Extension members are formed to extend at both ends and the projection is formed to protrude at the end of the extension piece between the extension piece has a first inclined surface formed; And A support member having a sliding groove into which the protrusion is inserted to be slidably coupled to the fixing member and having a second inclined surface corresponding to the first inclined surface formed on the fixing member is formed. Tilt and telescope device of the steering column comprising a.

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