KR20210125208A - A steering apparatus for a vehicle - Google Patents

Abstract

The present invention relates to a steering device for a vehicle, capable of absorbing an impact transmitted to a steering device in a vehicle collision accident and preventing serious injury to a driver and comprises: a steering shaft; an inner tube surrounding the outer periphery of the steering shaft; a column housing surrounding the outer periphery of the inner tube and having a teleslot opened at one end and formed in the axial direction; a stopper block coupled to the inner tube and moving along the teleslot when the inner tube is moved in the axial direction; and a stopper plate having a stopper part coupled to the stopper block, moved together with the stopper block in the axial direction when the inner tube is moved in the axial direction, and in contact with a stopper protrusion formed on the column housing when the inner tube is moved by a predetermined section in the axial direction to limit the axial movement of the inner tube. When the inner tube is further moved in the axial direction while the stopper part is in contact with the stopper protrusion, the stopper plate is separated from the stopper block and is deformed by being pushed by the stopper block.

Description

Steering system for vehicle {A STEERING APPARATUS FOR A VEHICLE}

The present invention relates to a steering device for a vehicle, and more particularly, to a steering device for a vehicle capable of adjusting a position of a steering wheel to suit the physical condition of a driver.

In general, a steering device for a vehicle is a device for changing the traveling direction of a vehicle at the will of a driver. , is configured to include a steering column surrounding the outer periphery of the steering shaft.

As the driver rotates while holding the steering wheel by hand, the steering shaft is rotated in the rotational direction of the steering wheel, and accordingly, the left and right tie rods are moved in the left and right directions by the steering gear interlocked with the steering shaft. By rotating the knuckle installed on the wheel wheel, the wheel of the vehicle is steered so that the front end is directed to the left or to the right.

Meanwhile, the vehicle steering apparatus has a tilt function and a telescope function for adjusting the position of the steering wheel according to the driver's physical condition (eg, sitting height, arm length).

In order to implement the tilt function and the telescope function, the steering column is composed of a column housing and an inner tube, the inner tube is disposed to surround the outer periphery of the steering shaft, and the column housing covers the outer periphery of the inner tube wrapped and placed In addition, a mounting bracket is installed on the outside of the column housing, and the mounting bracket is mounted on the vehicle body, so that the steering device can be installed on the vehicle body.

The column housing is installed on the mounting bracket to rotate about a horizontal axis, and the inner tube is installed on the column housing to move in an axial direction. The steering shaft is rotatably installed in the circumferential direction on the inner tube through a center bearing, and is configured to rotate together with the steering wheel when the driver rotates the steering wheel.

The tilt function is a function of adjusting the position of the steering wheel by rotating the column housing around the horizontal axis.

In addition, the telescope function axially moves the inner tube with respect to the column housing so that the inner tube is axially moved together with the steering shaft while wrapping the outer periphery of the steering shaft, thereby rotating the steering wheel. It is a function that can adjust the position in the direction. The telescope function also has a function of absorbing impact energy while the steering wheel and the steering column are collapsing when a vehicle collides.

The steering device for a vehicle is provided with a tele lever for telescopically operating the position of the steering wheel. That is, after the driver operates the tele lever to the open position, the driver can adjust the position of the steering wheel to suit his or her body condition, and after adjusting the position of the steering wheel to suit his or her body condition, the driver can operate the tele lever The position of the steering wheel may be fixed by manipulating it to the locked position.

Republic of Korea Patent Publication No. 10-1678191 (published on November 21, 2016) (hereinafter referred to as 'prior art') discloses a 'vehicle steering column' having an adjustment lever corresponding to the tele lever.

In the prior art, a hollow inner tube surrounding a steering shaft, a slot in the steering axis direction is formed at one end portion into which the inner tube is inserted, and opposite to each other on both sides of the slot with respect to the slot from the outer circumferential surface of the steering shaft A hollow outer tube including a pair of distance flanges extending in the vertical direction to form a telescope hole, coupled to the inner tube through the slot and disposed between the pair of distance flanges, the outer tube a rotation preventing block for limiting the rotation of a tilt bracket coupled to the outside of the pair of distance flanges and having a tilt hole formed at a position corresponding to the telescope hole to be coupled to a mounting bracket; and one side outer surface of the tilt bracket and a fixing bolt coupled to the control lever, and a fixing bolt coupled to the control lever through the telescope hole and the tilt hole.

In the prior art, by having the anti-rotation block disposed between a pair of distance flanges while being fixed to the inner tube to limit rotation of the outer tube, the outer tube and the It is possible to prevent the components such as the tilt bracket coupled with the outer tube from being rotated due to their own weight or external impact, as well as restrict the axial movement of the inner tube.

However, in the prior art, the anti-rotation block is moved in the axial direction in the slot and comes into contact with the distance flange located at the end of the slot, thereby limiting the axial movement of the inner tube.

Accordingly, in the prior art, when the control lever is in the locked state, when a car collision accident occurs and the inner tube moves in the axial direction, the anti-rotation block comes into contact with the distance flange, so that the inner tube Since the axial movement is restricted, there is a problem that the driver may be seriously injured by hitting the steering wheel.

Republic of Korea Patent Publication No. 10-1678191 (2016.11.21. Announcement date)

SUMMARY OF THE INVENTION An object of the present invention is to provide a steering system for a vehicle capable of preventing serious injury to a driver by absorbing a shock transmitted to a steering system in a vehicle collision accident.

The problems of the present invention are not limited to the problems mentioned above, and other problems not mentioned will be clearly understood by those skilled in the art from the following description.

In order to achieve the above object, a steering apparatus for a vehicle according to the present invention includes a steering shaft, an inner tube, a column housing, a stopper block, and a stopper plate. The inner tube surrounds an outer periphery of the steering shaft. The column housing surrounds the outer periphery of the inner tube. A teleslot is formed in the column housing in the axial direction. The teleslot is formed by opening at one end of the column housing. The stopper block is coupled to the inner tube and moves along the teleslot when the inner tube moves in the axial direction. The stopper plate is coupled to the stopper block and moves in the axial direction together with the stopper block when the inner tube moves in the axial direction. A stopper portion is formed on the stopper plate to contact a stopper protrusion formed on the column housing to limit the axial movement of the inner tube when the inner tube is moved by a predetermined section in the axial direction. When the inner tube is further moved in the axial direction while the stopper part is in contact with the stopper protrusion, the stopper plate is separated from the stopper block and is deformed by being pushed by the stopper block.

The stopper plate may include an outer plate part, an inner plate part, and a bending part. The outer plate part may be coupled to the stopper block and disposed outside the stopper block. The stopper part may be formed on the outer plate part. The inner plate portion may be disposed in the inner tube parallel to the outer plate portion. The bending part may connect the outer plate part and the inner plate part. The bending part may be disposed to correspond to one end of the stopper block.

The outer plate part may be coupled to the stopper block and the inner tube through a rivet.

A polygonal protrusion may be formed on an inner surface of the stopper block to be inserted into a polygonal hole formed in the inner tube. The stopper block may be formed as a convex curved portion in which a portion in contact with the bending portion corresponds to a shape of the bending portion.

Bolt fastening portions may be formed to protrude from both sides of one end of the outer plate portion. The stopper part may be fastened to the bolt fastening part through a bolt.

An insertion hole opening in an axial direction may be formed at an end of the inner tube inserted into the column housing. The bending part may be disposed in the insertion hole. A guider part inserted into the insertion hole and disposed inside the inner tube may protrude from an inner surface of one end of the stopper block. A guide slot may be formed in the guider part through which the inner plate part is movably disposed.

One end of the stopper block may be formed as a convex curved portion so that a portion in contact with the bending portion corresponds to a shape of the bending portion.

The stopper protrusion may be formed of a pair of stopper protrusions respectively formed on both sides of the teleslot. A pair of stopper protrusions may be formed on the stopper part to respectively contact the pair of stopper protrusions.

The details of other embodiments are included in the detailed description and drawings.

In the steering apparatus for a vehicle according to the present invention, when the inner tube is inserted into the column housing rather than the maximum tele-in position due to the impact generated during a vehicle collision accident, the stopper plate is separated from the stopper block and then is pushed by the stopper block and is deformed As the shock is absorbed, there is an effect of preventing the driver from being seriously injured by colliding with the steering wheel.

The effects of the present invention are not limited to the effects mentioned above, and other effects not mentioned will be clearly understood by those skilled in the art from the description of the claims.

1 is a perspective view showing a tele-out state of a steering apparatus for a vehicle according to an embodiment of the present invention;
2 is a perspective view showing a tele-in state of the steering apparatus for a vehicle according to an embodiment of the present invention;
3 is a partially cutaway perspective view showing a tele-out state of the steering apparatus for a vehicle according to an embodiment of the present invention;
4 is a partially cutaway perspective view showing a tele-in state of the steering apparatus for a vehicle according to an embodiment of the present invention;
5 is an exploded perspective view showing the tele stopper shown in FIGS. 1 to 4;
6 is an exploded perspective view showing the bottom of the tele stopper shown in FIG. 5;
7 is a side cross-sectional view showing the tele stopper before the vehicle crash accident;
8 is a side cross-sectional view showing a tele stopper after a vehicle crash accident.

Hereinafter, a steering apparatus for a vehicle according to an embodiment of the present invention will be described with reference to the drawings.

1 is a perspective view illustrating a tele-out state of a vehicle steering apparatus according to an embodiment of the present invention, FIG. 2 is a perspective view illustrating a tele-in state of a vehicle steering apparatus according to an embodiment of the present invention, and FIG. 3 is an embodiment of the present invention 4 is a partially cut-away perspective view showing a tele-out state of the steering system for a vehicle by FIG. 4 is a partially cut-away perspective view showing a tele-in state of the steering system for a vehicle according to an embodiment of the present invention.

1 to 4 , the steering apparatus 100 for a vehicle according to an embodiment of the present invention may be installed in a vehicle.

The steering apparatus 100 may include a steering column 10 and a steering shaft 40 . The steering column 10 may be installed on the outer peripheral surface of the steering shaft 40 . The steering column 10 may surround the outer periphery of the steering shaft 40 . The steering shaft 40 may axially penetrate the steering column 10 .

The steering column 10 may include a column housing 20 and an inner tube 30 . The column housing 20 may be installed outside the inner tube 30 , and the inner tube 30 may be installed inside the column housing 20 . The column housing 20 may surround the outer periphery of the inner tube 30 . The steering shaft 40 may axially penetrate the inner tube 30 .

Support protrusions 20A may be formed on both sides of the column housing 20 , respectively. The support protrusions 20A on both sides may be connected to and supported by the connecting portions 5A protruding from the mounting bracket 5 through the springs 3 , respectively.

The mounting bracket 5 may be mounted on the vehicle body. The mounting bracket 5 may be formed of a pair of mounting brackets 5 disposed to protrude from both sides of the column housing 20 in the radial direction. Each of the pair of mounting brackets 5 may be connected to each support protrusion 20A through a respective spring 3 . The pair of mounting brackets 5 may be disposed orthogonally to a pair of mounting bracket portions 23 and 24 to be described later.

The column housing 20 may be rotatably installed on the vehicle body about a horizontal axis. Here, the horizontal axis may be an axis in a direction perpendicular to the axial direction of the steering shaft 40 . A tilt lever (not shown) may be provided in the vehicle compartment, and the driver may operate the tilt lever to make the column housing 20 rotatable about the horizontal axis as a rotation center. Thereafter, the driver may rotate the column housing 20 about the horizontal axis to the rotation center, so that the position of the steering wheel (not shown) comes to a position suitable for the driver's physical condition.

In addition, the inner tube 30 may be axially movably installed inside the column housing 20 . The inner tube 30 may be formed in an axially long cylindrical shape, and both ends may be opened. A tele lever 50 may be installed in the column housing 20 . The operator may rotate the tele lever 50 to make the inner tube 30 axially movable with respect to the column housing 20 , and then pivot the inner tube 30 relative to the column housing 20 . direction, so that the position of the steering wheel can be brought to a position suitable for the physical condition of the driver.

The steering shaft 40 may include an inner shaft 41 and an outer shaft 42 . The upper end of the inner shaft 41 may be inserted into the lower end of the outer shaft 42 . The outer shaft 42 may have an outer diameter larger than that of the inner shaft 41 , and the inner shaft 41 may have a smaller outer diameter than the outer shaft 42 .

The outer shaft 42 may constitute an upper portion of the steering shaft 40 , and the inner shaft 41 may constitute a lower portion of the steering shaft 40 .

The upper end of the outer shaft 42 may protrude upward from the upper end of the inner tube 30 , and the lower end of the inner shaft 41 may protrude downward from the lower end of the column housing 20 .

The steering wheel may be installed at an upper end of the outer shaft 42 . The steering wheel is a configuration that a driver holds by hand and rotates to the right or to the right to steer the vehicle, and may be disposed in a vehicle compartment around an instrument panel located in front from the driver's seat.

A decoupling unit (not shown) that acts as a damping unit may be installed at the lower end of the inner shaft 41 . The decoupling unit may be connected to a universal joint disposed on an upper end of an intermediate shaft (not shown). That is, the decoupling unit may connect the lower end of the steering shaft and the unit universal joint disposed at the upper end of the intermediate shaft.

When the outer shaft 42 is rotated as the driver rotates the steering wheel, the inner shaft 41 may be rotated in association with this.

In addition, when the driver adjusts the position of the steering wheel to suit his or her physical condition, the inner shaft 41 may be drawn into or drawn out of the outer shaft 42 as the inner tube 30 moves in the axial direction. have.

Meanwhile, a bearing unit (not shown) may be installed inside the inner tube 30 . The bearing unit may rotatably install the steering shaft 40 to the inner tube 30 . The bearing unit may be installed between the inner tube 30 and the steering shaft 40 . The bearing unit may be installed between the inner tube 30 and the outer shaft 42 .

In order for the driver to move the inner tube 30 in the axial direction with respect to the column housing 20 to adjust the position of the steering wheel to suit his or her body condition, the column housing 20 has a teleslot 25 It can be formed in this axial direction. The tele slot 25 may be formed to be opened at one end of the column housing 20 .

In this embodiment, since the lower end of the inner tube 30 is inserted into the upper end of the column housing 20 and the upper end of the inner tube 30 protrudes out of the upper end of the column housing 20, the teleslot ( 25 is formed to be opened at the top of the column housing 20 . However, if the upper end of the inner tube 30 is inserted into the lower end of the column housing 20 and the lower end of the inner tube 30 protrudes out of the lower end of the column housing 20, the teleslot 25 is It may be formed to be opened at the lower end of the column housing 20 .

In addition, a pair of mounting bracket portions 23 and 24 may be formed in the column housing 20 . The pair of installation bracket portions 23 and 24 may be formed to face each other in a radial direction on the outer peripheral surface of the upper end of the column housing 20 .

The tele slot 25 is formed by being opened from the upper end of the column housing 20 , and may be formed to pass between the pair of mounting brackets 23 and 24 in the axial direction.

The tele shaft 55 may pass through the pair of mounting bracket portions 23 and 24 . The tele shaft 55 may be elongated in a direction perpendicular to the axial direction of the steering shaft 40 . The tele shaft 55 may be disposed elongated in the radial direction of the inner tube 30 . The tele shaft 55 may be long in the horizontal direction.

The tele lever 50 is coupled to one end of the tele shaft 55 and adjusts the radial width of the tele slot 25 to control the axial movement of the inner tube 30 with respect to the column housing 20 . . That is, when the driver rotates the tele lever 50 to the open position in order to adjust the position of the steering wheel to suit his or her body condition, the radial width of the tele slot 25 is widened so that the column housing 20 The inner circumferential surface is in loose contact with the outer circumferential surface of the inner tube 30 , so that the inner tube 30 can be moved in the axial direction with respect to the column housing 20 . In addition, when the driver rotates the tele lever 50 to the locked position after adjusting the position of the steering wheel to suit his or her body condition, the radial width of the tele slot 25 is narrowed and the Since the inner circumferential surface is in close contact with the outer circumferential surface of the inner tube 30 , the inner tube 30 may not be able to move in the axial direction with respect to the column housing 20 .

The pair of installation bracket portions 23 and 24 include a first installation bracket portion 23 formed on one side of the outer peripheral surface of the upper end of the column housing 20 , and a second installation bracket portion 23 formed on the other side of the outer peripheral surface of the upper end of the column housing 20 . It may include an installation bracket portion (24). The first installation bracket part 23 and the second installation bracket part 24 may be disposed to face each other in a radial direction of the column housing 20 .

The tele shaft 55 may pass through the pair of installation bracket portions 23 and 24, and both ends of the tele shaft 55 may be disposed to protrude outward of the pair of installation bracket portions 23 and 24, respectively. have. A first cam (not shown) may be installed at one end of the tele shaft 55 protruding to the outside of the first installation bracket part 23 , and a tele lever coupled to one end of the first installation bracket part 23 ( 50), a second cam (not shown) may be disposed on an inner surface facing the first cam.

When the driver rotates the tele lever 50 to the locked position, the first cam and the second cam are tightly engaged, and accordingly, the pair of installation bracket parts 23 and 24 are pulled in a direction closer to each other. As a result, the radial width of the teleslot 25 is reduced, and the inner circumferential surface of the column housing 20 is in close contact with the outer circumferential surface of the inner tube 30 to prevent the inner tube 30 from moving in the axial direction.

In addition, when the driver rotates the tele lever 50 to the open position, the first cam and the second cam are opened from each other, and accordingly, the pair of mounting bracket parts 23 and 24 are opened to their original positions and the tele The radial width of the slot 25 is widened to its original position, and the inner circumferential surface of the column housing 20 is in loose contact with the outer circumferential surface of the inner tube 30, thereby enabling the inner tube 30 to move in the axial direction. .

A fixed gear 56 may be coupled to the outside of the second installation bracket part 24 , and the other end of the tele shaft 55 protruding to the outside of the second installation bracket part 24 passes through the fixed gear 56 . Thus, it may protrude to the outside of the fixed gear 56 . In addition, the movable gear 57 may be installed at the other end of the tele shaft 55 protruding to the outside of the fixed gear 56 . The other end of the tele shaft 55 may pass through the movable gear 57 , and a nut 58 may be installed at the other end of the tele shaft 55 passing through the movable gear 57 . The nut 58 may prevent the movable gear 57 from coming out through the other end of the tele shaft 55 . A shaft through hole through which the tele shaft 55 passes may be formed in each of the pair of mounting brackets 23 and 24 , the fixed gear 56 , and the movable gear 57 .

The fixed gear 56 and the movable gear 57 are formed in a substantially rectangular shape and may be disposed to face each other, and gear teeth may be formed on opposite surfaces of the fixed gear 56 and the movable gear 57 , respectively. When the tele lever 50 is in the locked position, the gear teeth formed on the movable gear 57 are meshed with the gear teeth formed on the fixed gear 56 , so that the locked state of the tele lever 50 may not be released.

A tele stopper 60 may be coupled to the inner tube 30 . The tele stopper 60 may be disposed to be movable in the axial direction together with the inner tube 30 .

The tele stopper 60 is in contact with the stopper protrusions 21 and 22 formed on the column housing 20 when the inner tube 30 is moved in the axial direction by a predetermined section to limit the axial movement of the inner tube 30 . can do. The tele stopper 60 has contact with the stopper protrusions 21 and 22 formed on the column housing 20 when the inner tube 30 is moved by a predetermined section in the axial direction to limit the axial movement of the inner tube 30 . A stopper portion 70 may be formed.

During the operation of the driver adjusting the position of the steering wheel to suit his/her body condition, the operation of moving the inner tube 30 in the axial direction and inserting it into the column housing 20 is called tele-in, and the inner tube 30 is referred to as tele-in. ) is moved in the axial direction to withdraw from the column housing 20 is referred to as a tele-out.

The position where the stopper part 70 contacts the stopper protrusions 21 and 22 may be the maximum tele-in position. That is, the state in which the inner tube 30 is moved in the axial direction by the predetermined section may be a state in which the inner tube 30 is moved to the maximum tele-in position.

The stopper projections 21 and 22 formed on the column housing 20 may be formed of a pair of stopper projections 21 and 22 respectively formed on both sides of the teleslot 25 . The pair of stopper projections 21 and 22 includes a first stopper projection 21 formed on one side of the teleslot 25 and a second stopper projection 22 formed on the other side of the teleslot 25 . can do. Since the stopper protrusions 21 and 22 are formed of a pair of stopper protrusions 21 and 22, when the stopper plate 90 to be described later is separated from the stopper block 80, the stopper plate 90 rotates to one side. It may not be, and furthermore, the stopper plate 90 may be pushed by the stopper block 80 to be stably deformed.

A pair of stopper projections 71 and 72 may be formed in the stopper portion 70 formed on the tele stopper 60 to respectively contact the pair of stopper projections 21 and 22 formed on the column housing 20 . The pair of stopper protrusions 71 and 72 may be formed on a surface of the stopper portion 70 opposite to the pair of stopper protrusions 21 and 22 . The pair of stopper protrusions 71 and 72 includes a third stopper protrusion 71 in contact with the first stopper protrusion 21 and a fourth stopper protrusion 72 in contact with the second stopper protrusion 22 . can do.

On the other hand, when the inner tube 30 is further moved in the axial direction while the stopper part 70 is in contact with the stopper protrusions 21 and 22 during a vehicle collision accident, the tele stopper 60 can absorb the impact. have. A structure in which the tele stopper 60 can absorb an impact in a vehicle crash accident will be described below with reference to FIGS. 5 to 8 .

5 is an exploded perspective view showing the tele stopper shown in FIGS. 1 to 4, FIG. 6 is an exploded perspective view showing the bottom of the tele stopper shown in FIG. 8 is a side cross-sectional view showing a telestopper after a vehicle crash accident.

5 to 8 , the tele stopper 60 may include a stopper block 80 and a stopper plate 90 in order to absorb an impact during a vehicle collision accident.

The stopper block 80 may be coupled to the inner tube 30 to move along the teleslot 25 when the inner tube 30 is moved in the axial direction.

The stopper plate 90 is coupled to the stopper block 80 so that when the inner tube 30 is moved in the axial direction, it can be moved together with the stopper block 80 in the axial direction.

A stopper portion 70 may be formed on the stopper plate 90 . In the event of a vehicle collision, the stopper plate 90 is separated from the stopper block 80 when the inner tube 30 is further moved in the axial direction while the stopper portion 70 is in contact with the stopper protrusions 21 and 22. After being pushed and deformed by the stopper block 80 , it is possible to absorb the shock generated during a vehicle crash accident. Accordingly, since the impact energy generated in a vehicle collision accident is consumed to deform the stopper plate 90 , it can be transmitted to the driver through the steering wheel to a minimum.

The stopper plate 90 may be formed in a plate shape in which any one point in the longitudinal direction is bent once. That is, the stopper plate 90 may include an outer plate portion 91 , an inner plate portion 92 , and a bending portion 93 .

The outer plate part 91 may be coupled to the stopper block 80 and disposed outside the stopper block 80 . A stopper part 70 may be formed in the outer plate part 91 . The outer plate part 91 may be a portion coupled to the stopper block 80 of the stopper plate 90 . The outer plate portion 91 may be formed to be elongated in the axial direction.

The inner plate part 92 may be disposed parallel to the outer plate part 91 inside the inner tube 30 . The inner plate part 92 may be disposed to face the inner surface of the stopper block 80 . The inner plate portion 92 may be disposed to be spaced downward from the inner surface of the stopper block 80 . The inner plate portion 92 may be formed to be elongated in the axial direction.

The bending part 93 may connect the outer plate part 91 and the inner plate part 92 . The bending part 93 may be disposed to correspond to one end of the stopper block 80 . That is, one end of the stopper block 80 may be disposed between the outer plate portion 91 and the inner plate portion 92 , and the bending portion 93 is disposed in front of the stopper block 80 in the tele-in direction. can be Accordingly, when the stopper block 80 is moved in the axial direction in a state in which the stopper plate 90 is separated from the stopper block 80 , the bending part 93 may be pushed by one end of the stopper block 80 , thereby Accordingly, the stopper plate 90 may be deformed.

When the inner tube 30 is further moved in the axial direction while the stopper part 70 is in contact with the stopper protrusions 21 and 22 during a vehicle collision accident, the stopper plate 90 may be separated from the stopper block 80 . In order to make it possible, it is preferable that the outer plate part 91 is coupled to the stopper block 80 through a fastening member having low rigidity. In this embodiment, the outer plate part 91 is coupled to the stopper block 80 and the inner tube 30 through rivets R1 and R2. Accordingly, when the inner tube 30 is further moved in the axial direction while the stopper portion 70 is in contact with the stopper protrusions 21 and 22 during a vehicle collision accident, the rivets R1 and R2 are damaged and the outer plate portion 91 may be separated from the stopper block 80 .

Fastening holes 91G, 81, 31, 91H, 82, and 32 to which rivets R1 and R2 are respectively fastened may be formed in the outer plate part 91, the stopper block 80, and the inner tube 30.

The rivets R1 and R2 may include a first rivet R1 and a second rivet R2 spaced apart from each other in the axial direction. The fastening holes 91G, 81, 31, 91H, 82, and 32 include a first fastening hole 91G and a second fastening hole 91H formed in the outer plate part 91 to be axially spaced apart from each other, and a stopper. A third fastening hole 81 and a fourth fastening hole 82 formed to be spaced apart from each other in the axial direction in the block 80, and a fifth fastening hole 31 formed to be spaced apart from each other in the axial direction in the inner tube 30 and a sixth fastening hole 32 . The first rivet R1 includes a first fastening hole 91G, a third fastening hole 81 and a fifth fastening hole 31 respectively formed in the outer plate part 91 , the stopper block 80 and the inner tube 30 . ) through which it can be fastened. The second rivet R2 includes a second fastening hole 91H, a fourth fastening hole 82 and a sixth fastening hole 32 respectively formed in the outer plate part 91 , the stopper block 80 , and the inner tube 30 . ) through which it can be fastened.

Polygonal protrusions 83 and 84 inserted into the polygonal holes 33 and 34 formed in the inner tube 30 may be formed on the inner surface of the stopper block 80 . The polygonal protrusions 83 and 84 may be formed between the third fastening hole 81 and the fourth fastening hole 82 . The polygonal protrusions 83 and 84 may include a first polygonal protrusion 83 and a second polygonal protrusion 84 formed to be spaced apart from each other in the axial direction on the inner surface of the stopper block 80 . The polygonal holes 33 and 34 may include a first polygonal hole 33 and a second polygonal hole 34 formed in the inner tube 30 to be spaced apart from each other in the axial direction. The first polygonal protrusion 83 may be inserted into the first polygonal hole 33 , and the second polygonal protrusion 84 may be inserted into the second polygonal hole 34 .

Since the polygonal projections 83 and 84 are inserted into the polygonal holes 33 and 34, when the rivets R1 and R2 are broken and the stopper plate 90 is separated from the stopper block 80, the inner tube When 30 is moved in the axial direction, the stopper block 80 is moved together with the inner tube 30 in the axial direction to push the bending portion 93 of the stopper plate 90 to deform the stopper plate 90. . In order to prevent the stopper block 80 from rotating when the stopper block 80 pushes the bending portion 93 of the stopper plate 90 , the polygonal projections 83 and 84 are formed in a polygonal shape and the polygonal holes 33 and 34 are formed. ) is preferably formed of a hole having a shape corresponding to the polygonal projections (83, 84). Although the polygonal protrusions 83 and 84 and the polygonal holes 33 and 34 are exemplified as being formed in a substantially rectangular shape in the present embodiment, they may be variously changed to a triangular shape, a pentagonal shape, or a hexagonal shape.

Meanwhile, bolt fastening portions 91A and 91B may be formed to protrude from both sides of one end of the outer plate portion 91 , respectively. The bolt fastening parts 91A and 91B include a first bolt fastening part 91A protruding from one side of one end of the outer plate part 91 and a second bolt fastening formed protruding from one end of the outer plate part 91 to the other side of the outer plate part 91 . A portion 91B may be included. A first side bending part 91C and a second side bending part 91D may be formed on both sides of the outer plate part 91 , respectively. The first side bending part 91C and the second side bending part 91D may be formed entirely along the length of the outer plate part 91 , and may be bent in a direction opposite to the inner plate part 92 . The first bolt fastening part 91A may protrude from one side of one end of the first side bending part 91C, and the second bolt fastening part 91B may be formed on one side of one end of the second side bending part 91D. A protrusion may be formed.

The stopper part 70 may be fastened to the bolt fastening parts 91A and 91B through bolts B1 and B2. The bolts B1 and B2 may include a first bolt B1 fastened to the first bolt fastening part 91A and a second bolt B2 fastened to the second bolt fastening part 91B. Since the stopper portion 70 is coupled to the stopper plate 90 through the bolts B1 and B2, which are fastening members stronger than the rivets R1 and R2, the stopper portion 70 is the stopper in a vehicle crash accident. If the inner tube 30 is further moved in the axial direction while in contact with the protrusions 21 and 22 , the rivets R1 and R2 may be damaged.

The stopper portion 70 may be formed in a substantially rectangular plate shape. Bolt fastening holes 73 and 74 through which the bolts B1 and B2 pass may be formed in the stopper portion 70 . The bolt fastening holes 73 and 74 may include a first bolt fastening hole 73 through which the first bolt B1 passes, and a second bolt fastening hole 74 through which the second bolt B2 passes. have. The first bolt fastening hole 73 and the second bolt fastening hole 74 may be formed to be spaced apart from each other in the radial direction of the inner tube 30 .

A third bolt fastening hole 91E corresponding to the first bolt fastening hole 73 may be formed in the first bolt fastening part 91A, and a second bolt fastening hole 74 in the second bolt fastening part 91B. ) and a fourth bolt fastening hole 91F corresponding to may be formed. The third bolt fastening hole 91E may be formed to open the outside of the first bolt fastening part 91A, and the fourth bolt fastening hole 91F may be formed to open the outside of the second bolt fastening part 91B. can be The first bolt B1 may pass through the first bolt fastening hole 93 and the third bolt fastening hole 91E, and the second bolt B2 may be fastened to the second bolt fastening hole 74 and the fourth bolt fastening hole 74 . It may pass through the hole 91F.

A pair of cutout holes 75 and 76 may be formed in the stopper portion 70 between the first bolt B1 and the second bolt B2 . The weight of the stopper part 70 may be reduced by the pair of cut-out holes 75 and 76 . The pair of cutout holes 75 and 76 may be opened in the direction in which the tele slot 25 is opened. The pair of cut-out holes 75 and 76 may include a first cut-out hole 75 and a second cut-out hole 76 formed to be spaced apart from each other in the radial direction of the inner tube 30 .

A guider part 85 may protrude from the inner surface of one end of the stopper block 80 . In addition, an insertion hole 35 (refer to FIGS. 3 and 8 ) into which the guider part 85 is inserted may be formed in the inner tube 30 . The insertion hole 35 may be formed to be axially opened at an end of the inner tube 30 inserted into the column housing 20 . The guider part 85 may be inserted into the insertion hole 35 to be disposed inside the inner tube 30 . A guide slot 86 through which the inner plate part 92 is movably disposed may be formed in the guider part 85 .

A part of the bending part 93 may be disposed in the insertion hole 35 . Since the insertion hole 35 is opened and formed at the end of the inner tube 30 inserted into the column housing 20, after the stopper plate 90 is separated from the stopper block 80, the stopper block ( When one end of the 80 pushes the bending part 93 in the axial direction, the bending part 93 is pushed in the axial direction by the stopper block 80 , and the stopper plate 90 maintains the shape of the bending part 93 . can be transformed as When the bending part 93 is pushed by the stopper block 80 , one end of the stopper block 80 is in contact with the bending part 93 in order to be deformable while maintaining the shape of the bending part 93 as much as possible. It is preferable to form a convex curved portion 87 corresponding to the shape of the bending portion 93 .

A pair of cut-out holes 88 and 89 through the guide part 85 may be formed on the outer surface of one end of the stopper block 80 . The weight of the stopper block 80 may be reduced by a pair of cut-out holes 88 and 89 . A pair of cut-out holes 88 and 89 may be formed to pass through one end of the stopper block 80 from the outer surface to the inner surface. The pair of cut-out holes 88 and 89 may include a third cut-out hole 88 and a fourth cut-out hole 89 that are formed to be spaced apart from each other in the radial direction of the inner tube 30 .

The operation of the vehicle steering apparatus according to the embodiment of the present invention configured as described above will be described below.

Before the vehicle collision accident occurs, as shown in FIGS. 1 and 7 , the outer plate part 91 of the stopper plate 90 is connected to the stopper block 80 and the inner tube 30 through the rivets R1 and R2. is bound to

When a vehicle collision accident occurs in such a state, the inner tube 30 is moved in the axial direction and inserted into the column housing 20, the stopper portion formed on the stopper plate 90 as shown in FIG. 2 ( 70 is in contact with the stopper projections 21 and 22 formed on the column housing 20 . In this state, when the inner tube 30 is further moved in the axial direction, as shown in FIG. 8 , the rivets R1 and R2 are broken and the stopper plate 90 is separated from the stopper block 80 , and then The bending portion 93 of the stopper plate 90 may be deformed by being pushed by the curved portion 87 formed at one end of the stopper block 80 to absorb the shock generated in the vehicle crash accident.

As described above, in the steering apparatus for a vehicle according to an embodiment of the present invention, when the inner tube 30 is inserted into the column housing 20 rather than the maximum tele-in position due to an impact generated during a vehicle collision accident, the stopper plate After the 90 is separated from the stopper block 80, it is pushed and deformed by the stopper block 80 to absorb the shock, thereby preventing the driver from being seriously injured by colliding with the steering wheel.

Those of ordinary skill in the art to which the present invention pertains will understand that the present invention may be embodied in other specific forms without changing the technical spirit or essential features thereof. Therefore, it should be understood that the embodiments described above are illustrative in all respects and not restrictive. The scope of the present invention is indicated by the following claims rather than the above detailed description, and all changes or modifications derived from the meaning and scope of the claims and their equivalents should be construed as being included in the scope of the present invention.

20: column housing 23, 24: mounting bracket part
25: teleslot 30: inner tube
33, 34: polygonal hole 40: steering shaft
50: tele lever 55: tele shaft
60: tele stopper 70: stopper part
80: stopper block 83, 84: polygon protrusion
85: guide part 86: guide slot
87: curved portion 90: stopper plate
91: outer plate portion 92: inner plate portion
93: bending part B1, B2: bolt
R1, R2: Rivets

Claims (8)

steering shaft 40;
an inner tube 30 surrounding the outer periphery of the steering shaft 40;
a column housing 20 surrounding the outer periphery of the inner tube 30 and having a teleslot 25 opened at one end and formed in the axial direction;
a stopper block 80 coupled to the inner tube 30 and moving along the teleslot 25 when the inner tube 30 is moved in the axial direction; and
When the inner tube 30 is coupled to the stopper block 80 and moves in the axial direction, it is moved together with the stopper block 80 in the axial direction, and the inner tube 30 is moved in the axial direction by a predetermined section. a stopper plate 90 having a stopper portion 70 formed in contact with the stopper protrusions 21 and 22 formed on the column housing 20 to limit the axial movement of the inner tube 30 in the state,
The stopper plate 90 is separated from the stopper block 80 when the inner tube 30 is further moved in the axial direction while the stopper portion 70 is in contact with the stopper protrusions 21 and 22, and A steering device for a vehicle that is deformed by being pushed by the stopper block (80). The method according to claim 1,
The stopper plate 90,
an outer plate portion 91 coupled to the stopper block 80 and disposed outside the stopper block 80, the stopper portion 70 being formed;
an inner plate portion 92 disposed in the inner tube 30 parallel to the outer plate portion 91;
and a bending part (93) connecting the outer plate part (91) and the inner plate part (92) and disposed to correspond to one end of the stopper block (80). 3. The method according to claim 2,
The outer plate part 91 is coupled to the stopper block 80 and the inner tube 30 through rivets R1 and R2. 4. The method according to claim 3,
Polygonal projections 83 and 84 inserted into the polygonal holes 33 and 34 formed in the inner tube 30 are formed on the inner surface of the stopper block 80,
The stopper block (80) is a vehicle steering apparatus in which a portion in contact with the bending portion (93) is formed as a convex curved portion (87) corresponding to the shape of the bending portion (93). 3. The method according to claim 2,
Bolt fastening parts 91A and 91B are respectively protruded from both sides of one end of the outer plate part 91,
The stopper part 70 is fastened to the bolt fastening parts 91A and 91B through bolts B1 and B2. 3. The method according to claim 2,
An insertion hole 35 is formed at an end of the inner tube 30 inserted into the column housing 20, which is opened in the axial direction and in which the bending part 93 is disposed,
A guider part 85 inserted into the insertion hole 35 and disposed inside the inner tube 30 protrudes from the inner surface of one end of the stopper block 80,
A steering device for a vehicle in which a guide slot 86 through which the inner plate part 92 is movably disposed is formed in the guider part 85 . 7. The method of claim 6,
A steering device for a vehicle in which one end of the stopper block (80) is formed as a convex curved portion (87) so that a portion in contact with the bending portion (93) corresponds to the shape of the bending portion (93). The method according to claim 1,
The stopper protrusions 21 and 22 are formed of a pair of stopper protrusions 21 and 22 respectively formed on both sides of the teleslot 25,
A steering apparatus for a vehicle in which a pair of stopper protrusions (71, 72) respectively contacting the pair of stopper protrusions (21, 22) are formed on the stopper part (70).

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