KR102478918B1 - A steering apparatus for a vehicle - Google Patents

Abstract

The present invention relates to a steering device for a vehicle in which a tele-in or tele-out operation is smooth so that a driver can adjust the tele-in or tele-out with little force, comprising: a steering shaft; an inner tube surrounding the outer circumference of the steering shaft; A column housing wrapped around the outer circumference of the inner tube and formed in an axial direction with a tele slot opened at one end and coupled to the inner tube, so that when the inner tube is moved in the axial direction, the column housing is moved along the tele slot and the inner tube is axially formed. A tele stopper that contacts the stopper protrusion formed on the column housing to limit the axial movement of the inner tube when moved a predetermined section in the direction, and is rotatably coupled to the tele stopper and protrudes from both sides of the tele stopper. and includes rollers that are in contact with both sides of the teleslot and have elasticity.

Description

Vehicle steering device {A STEERING APPARATUS FOR A VEHICLE}

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

In general, a steering device for a vehicle is a device for changing the driving direction of a vehicle according to the driver's will, and includes a steering shaft rotatable in a circumferential direction, a steering wheel coupled to an upper end of the steering shaft and held by the driver's hand, , It is configured to include a steering column surrounding the outer circumference of the steering shaft.

As the driver holds the steering wheel by hand and rotates it, 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 to move the left and right sides. By rotating a knuckle installed on a wheel, the wheel of the vehicle is steered with the leading edge toward the left or toward the right.

On the other hand, the vehicle steering device has a tilt function and a telescope function capable of adjusting the position of the steering wheel to suit the driver's physical condition (eg, sitting height, arm length).

In order to implement the tilt function and the telescopic function, the steering column is composed of a column housing and an inner tube, the inner tube is disposed to surround the outer circumference of the steering shaft, and the column housing surrounds the outer circumference of the inner tube wrapped around and placed Also, a mounting bracket is installed outside 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 to rotate around a horizontal axis on the mounting bracket, and the inner tube is installed to be movable in the column housing in an axial direction. The steering shaft is rotatably installed on the inner tube in a circumferential direction through a center bearing, and rotates together with the steering wheel when a 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 telescopic function moves the inner tube in the axial direction with respect to the column housing, so that the inner tube is moved in the axial direction along with the steering shaft while wrapping the outer circumference of the steering shaft, thereby rotating the steering wheel. It is a function that can adjust the position in the direction. The telescopic function also has a function of absorbing impact energy by collapsing the steering wheel and the steering column when a vehicle collides.

The vehicle steering device includes a tele-lever for telescopically manipulating the position of the steering wheel. That is, after manipulating the tele lever to the open position, the driver may adjust the position of the steering wheel to suit his/her physical condition, and after adjusting the position of the steering wheel to suit his/her physical condition, the driver may move the tele lever to the open position. It is possible to fix the position of the steering wheel by manipulating it into a locked position.

Republic of Korea Patent Registration No. 10-1678191 (2016.11.21. announcement date) (hereinafter referred to as 'prior art') discloses a 'vehicle steering column' having a control lever corresponding to the tele lever.

In the prior art, a hollow inner tube surrounding a steering shaft, a slot formed in a steering axis direction at one end into which the inner tube is inserted, and a shaft of the steering shaft from an outer circumferential surface so as to face each other on both sides of the slot centered on the slot. A hollow outer tube including a pair of distance flanges extending in the vertical direction to form a telescopic hole, coupled to the inner tube through the slot, and disposed between the pair of distance flanges to form the outer tube An anti-rotation block for limiting the rotation of, a tilt bracket coupled to the outer side of the pair of distance flanges and having a tilt hole formed at a position corresponding to the telescopic hole and coupled to the mounting bracket, and one outer surface of the tilt bracket It consists of a control lever coupled to, and a fixing bolt coupled to the control lever through the telescopic hole and the tilt hole.

The prior art is provided with 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, so that the outer tube and the It is possible to prevent a part such as a tilt bracket coupled to the outer tube from being rotated by its own weight or an external impact, and also to limit the movement of the inner tube in an axial direction.

However, in the prior art, the anti-rotation block moves in the axial direction within the slot and contacts the distance flange located at the end of the slot, thereby limiting the movement of the inner tube in the axial direction.

Therefore, in the prior art, when the anti-rotation block moves in the axial direction within the slot, the axial movement may not be smooth while colliding with at least one side of the slot, which causes the driver to adjust the tele-in or tele-out. There was a problem that required a lot of power to be consumed.

In addition, in the prior art, when the control lever is in a locked state and the inner tube is moved in the axial direction due to a collision accident of a vehicle, the anti-rotation block contacts the distance flange, thereby preventing the rotation of the inner tube. Since the axial movement is limited, there is also a problem that the driver may be seriously injured by colliding with the steering wheel.

Meanwhile, in a vehicle, a multi-function switch is connected to the inner tube. The multi-function switches are formed in a lever type, are provided as a pair, and are disposed below the steering wheel to protrude on both left and right sides, respectively. Among the multi-function switches on both sides, one may be a switch for controlling various lights of the vehicle, and the other may be a switch for controlling a wiper.

However, in the prior art, a fine gap is inevitably formed between both sides of the anti-rotation block and both sides of the slot, so that the inner tube in which the multi-function switch is installed rotates finely in the circumferential direction when the multi-function switch is operated There were also possible problems.

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

An object to be solved by the present invention is to provide a steering device for a vehicle in which the tele-in or tele-out operation is smooth, and the driver can control the tele-in or tele-out with little force.

Another problem to be solved by the present invention is to provide a steering device for a vehicle capable of preventing rotation of an inner tube in a circumferential direction when a driver operates a multi-function switch.

Another problem to be solved by the present invention is to provide a steering device for a vehicle capable of preventing serious injury to a driver by absorbing shock transmitted to the steering device in the event of a vehicle collision.

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

In order to achieve the above object, a vehicle steering device according to the present invention is composed of a steering shaft, an inner tube, a column housing, a tele stopper, and a roller. The inner tube surrounds an outer circumference of the steering shaft. The column housing surrounds an outer circumference of the inner tube. Tele slots are formed in the column housing in the axial direction. The tele slot is formed by being opened at one end of the column housing. The tele stopper is coupled to the inner tube and moves along the tele slot when the inner tube moves in an axial direction. The tele stopper contacts a stopper protrusion formed on the column housing when the inner tube is moved by a predetermined section in the axial direction, and restricts the movement of the inner tube in the axial direction. The rollers are rotatably coupled to the tele stopper and protrude from both sides of the tele stopper. The rollers may be in contact with both sides of the tele slot. The roller has elasticity.

A roller insertion groove into which the roller is inserted may be formed on an inner surface of the tele stopper so that both sides thereof are open. A coupling hole may be formed at the center of the roller. A coupling protrusion inserted into the coupling hole and rotatably coupling the roller may be formed on an inner surface of the roller insertion groove.

The roller may be composed of a first roller and a second roller. The first roller may protrude toward one side of the tele stopper and contact one side of the tele slot. The second roller may protrude toward the other side of the tele stopper and contact the other side of the tele slot. The coupling hole may include a first coupling hole and a second coupling hole. The first coupling hole may be formed at the center of the first roller. The second coupling hole may be formed at the center of the second roller. The engaging protrusion may include a first engaging protrusion and a second engaging protrusion. The first coupling protrusion may be inserted into the first coupling hole to rotatably couple the first roller. The second coupling protrusion may be inserted into the second coupling hole to rotatably couple the second roller.

The roller insertion groove may include a first roller insertion groove and a second roller insertion groove. The first roller may be inserted into the first roller insertion groove. The first coupling protrusion may be formed on an inner surface of the first roller insertion groove. The second roller may be inserted into the second roller insertion groove. The second coupling protrusion may be formed on an inner surface of the second roller insertion groove.

The first roller insertion groove and the second roller insertion groove may communicate with each other. The first roller insertion groove and the second roller insertion groove may be disposed obliquely with respect to an axial direction.

The tele stopper may be composed of a stopper block and a stopper plate. The stopper block may be coupled to the inner tube and move along the tele slot when the inner tube moves in an axial direction. The roller may be coupled to the stopper block. The stopper plate may be coupled to the stopper block and move in an axial direction together with the stopper block when the inner tube moves in an axial direction. A stopper portion may be formed on the stopper plate to limit movement of the inner tube in an axial direction by coming into contact with the stopper protrusion. The stopper plate may be deformed by being separated from the stopper block and pushed by the stopper block when the inner tube is further moved in an axial direction while the stopper part is in contact with the stopper protrusion.

The stopper plate may include an outer plate portion, an inner plate portion, and a bending portion. The outer plate portion may be coupled to the stopper block and disposed outside the stopper block. The stopper portion may be formed on the outer plate portion. The inner plate part may be disposed parallel to the outer plate part inside the inner tube. 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.

Other embodiment specifics are included in the detailed description and drawings.

In the vehicle steering device according to the present invention, since the roller rotatably coupled to the tele stopper contacts both sides of the tele slot, the tele-in or tele-out operation is smooth, and the driver can tele-in or tele-out with little force. has the effect of controlling

In addition, in the vehicle steering device according to the present invention, since the rollers protrude from both sides of the tele stopper and contact both sides of the tele slot, when the driver operates the multi-function switch, both sides of the tele stopper and the tele slot There is also an effect of preventing the inner tube from rotating in the circumferential direction due to the gap between both sides of the inner tube.

In addition, in the vehicle steering apparatus according to the present invention, when the inner tube is inserted into the column housing from the maximum telein position due to an impact generated during a vehicle collision accident, the stopper plate is pushed and deformed by the stopper block to reduce the impact Since it absorbs, there is also an effect of preventing the driver from being seriously injured by hitting 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 steering device for a vehicle according to an embodiment of the present invention;
2 is an exploded perspective view of a main part of a steering device for a vehicle according to an embodiment of the present invention;
3 is an enlarged exploded perspective view of the tele stopper shown in FIG. 2;
4 is an exploded perspective view showing the bottom of the tele stopper shown in FIG. 3;
5 is a side cross-sectional view showing a tele stopper before a vehicle crash accident;
Figure 6 is a side cross-sectional view showing the tele stopper after a vehicle crash;
7 is a view showing the action of the rollers shown in FIGS. 2 to 4;

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

1 is a perspective view showing a steering device for a vehicle according to an embodiment of the present invention.

Referring to FIG. 1 , a vehicle steering device 100 according to an embodiment of the present invention may be installed in a vehicle.

The steering device 100 may include a steering column 7 and a steering shaft 40 . The steering column 7 may be installed on an outer circumferential surface of the steering shaft 40 . The steering column 7 may wrap the outer circumference of the steering shaft 40 . The steering shaft 40 may axially pass through the steering column 7 .

The steering column 7 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 cover the outer circumference of the inner tube 30 . The steering shaft 40 may pass through the inner tube 30 in the axial direction.

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

The first mounting bracket 5 may be installed on the column housing 20 and mounted on the vehicle body. The first mounting brackets 5 may be formed of a pair of first mounting brackets 5 protruding from both sides of the column housing 20 in the radial direction. Each of the pair of first mounting brackets 5 may be connected to each of the support protrusions 20A through respective springs 3 . The pair of first mounting brackets 5 may be disposed orthogonally to the pair of installation bracket parts 23 and 24 to be described later.

The column housing 20 may be rotatably installed on a vehicle body about a horizontal axis as a rotational center. Here, the horizontal axis may be an axis perpendicular to the axial direction of the steering shaft 40 . A tilt lever (not shown) may be provided in the vehicle compartment, and a driver may manipulate the tilt lever to make the column housing 20 rotatable about the horizontal axis as a rotation center. After this, the driver may rotate the column housing 20 around the horizontal axis 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 movably installed inside the column housing 20 in the axial direction. The inner tube 30 may be formed in an axially long cylindrical shape, and both ends may be open. A tele lever 50 may be installed in the column housing 20 . The operator can rotate the tele lever 50 to make the inner tube 30 axially movable relative to the column housing 20, and then move the inner tube 30 axially relative to the column housing 20. direction, so that the position of the steering wheel comes to a position suitable for the driver's physical condition.

A second mounting bracket 6 may be installed on the inner tube 30 . The second mounting bracket 6 may be mounted on the vehicle body. The second mounting bracket 6 may be disposed at an angle of 90 degrees with the pair of first mounting brackets 5 installed in the column housing 20 .

The steering shaft 40 may include an inner shaft (not shown) and an outer shaft 42 . An upper end of the inner shaft may be inserted into a lower end of the outer shaft 42 . The outer shaft 42 may have a larger outer diameter than the inner shaft, and the inner shaft 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 may constitute a lower portion of the steering shaft 40 .

An upper end of the outer shaft 42 may protrude upward from the upper end of the inner tube 30 , and a lower end of the inner shaft 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 configured to be held by a driver's hand and rotated to the right or to the right in order to steer a vehicle, and may be disposed in a vehicle interior around an instrument panel located forward from a driver's seat.

A decoupling unit (not shown) may be installed at a lower end of the inner shaft to perform a damping action. 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 a lower end of the steering shaft and a unit-vertical joint disposed at an upper end of the intermediate shaft.

When the outer shaft 42 is rotated as the driver rotates the steering wheel, the inner shaft may be rotated in conjunction therewith.

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

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 relative to the column housing 20 and adjust the position of the steering wheel according to his/her physical 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 open 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 tele slot ( 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 outside the lower end of the column housing 20, the tele slot 25 It may be formed to be opened at the lower end of the column housing 20 .

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

The tele slot 25 is open at the upper end of the column housing 20 and may be formed to pass between the pair of mounting bracket parts 23 and 24 in the axial direction.

The tele shaft 55 may pass through the pair of installation brackets 23 and 24. The teleshaft 55 may be disposed long in a direction orthogonal to the axial direction of the steering shaft 40 . The teleshaft 55 may be disposed long in the radial direction of the inner tube 30 . The tele shaft 55 may be disposed long in the horizontal direction.

The tele lever 50 is coupled to one end of the tele shaft 55 to regulate the radial width of the tele slot 25, thereby controlling the axial movement of the inner tube 30 relative 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 physical condition, the radial width of the tele slot 25 widens, thereby increasing the position of 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 relative to the column housing 20 in the axial direction. 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 physical condition, the radial width of the tele slot 25 is narrowed and the column housing 20 The inner circumferential surface may come into close contact with the outer circumferential surface of the inner tube 30 so that the inner tube 30 cannot be moved relative to the column housing 20 in the axial direction.

The pair of mounting bracket parts 23 and 24 include a first mounting bracket part 23 formed on one side of the outer circumferential surface of the upper end of the column housing 20 and a second mounting bracket part 23 formed on the other side of the outer circumferential surface of the upper end of the column housing 20. An installation bracket portion 24 may be included. The first installation bracket part 23 and the second installation bracket part 24 may be disposed to face each other in the radial direction of the column housing 20 .

The tele shaft 55 may pass through the pair of installation brackets 23 and 24, and both ends of the tele shaft 55 may protrude outward from the pair of installation brackets 23 and 24, respectively. there is. A first cam (not shown) may be installed at one end of the tele shaft 55 protruding outward of the first installation bracket portion 23, and a tele lever coupled to one end of the first installation bracket portion 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 a 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 narrows, and the inner circumferential surface of the column housing 20 adheres to the outer circumferential surface of the inner tube 30, preventing the inner tube 30 from moving in the axial direction.

In addition, when the driver rotates the tele lever 50 to an open position, the first cam and the second cam are spread apart, and accordingly, the pair of installation bracket parts 23 and 24 are opened back to their original positions and the tele The radial width of the slot 25 is widened to the 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, so that the inner tube 30 can move in the axial direction. .

A fixed gear 56 may be coupled to the outside of the second mounting bracket 24, and the other end of the teleshaft 55 protruding outward of the second mounting bracket 24 passes through the fixed gear 56. This may protrude outward of the fixed gear 56. In addition, a movable gear 57 may be installed at the other end of the tele shaft 55 protruding outward from 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 installation brackets 23 and 24, the fixed gear 56, and the movable gear 57.

The fixed gear 56 and the movable gear 57 may be formed in a substantially rectangular shape and 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 in the movable gear 57 are engaged with the gear teeth formed in the fixed gear 56 to prevent the tele lever 50 from being unlocked.

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

The tele stopper 60 is coupled to the inner tube 30 and can move along the tele slot 25 when the inner tube 30 moves in the axial direction.

The tele stopper 60 limits the axial movement of the inner tube 30 by coming into contact with the stopper protrusions 21 and 22 formed on the column housing 20 when the inner tube 30 moves in the axial direction for a predetermined period. can do. In the tele stopper 60, when the inner tube 30 moves in the axial direction for a predetermined period, it comes into contact with the stopper protrusions 21 and 22 formed on the column housing 20 to limit the axial movement of the inner tube 30. A stopper portion 70 may be formed.

The operation of moving the inner tube 30 in the axial direction and inserting it into the column housing 20 during the operation of adjusting the position of the steering wheel according to the driver's physical condition is called a tele-in, and the inner tube 30 ) is moved in the axial direction and taken out of the column housing 20 is called tele-out.

A position where the stopper part 70 contacts the stopper protrusions 21 and 22 may be a 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 protrusions 21 and 22 formed on the column housing 20 may be formed as a pair of stopper protrusions 21 and 22 respectively formed on both sides of the tele slot 25 . The pair of stopper protrusions 21 and 22 include a first stopper protrusion 21 formed on one side of the tele slot 25 and a second stopper protrusion 22 formed on the other side of the tele slot 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 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 can be pushed by the stopper block 80 so that it can be stably deformed.

A pair of stopper protrusions 71 and 72 respectively contacting the pair of stopper protrusions 21 and 22 formed in the column housing 20 may be formed in the stopper portion 70 formed in the tele stopper 60 . The pair of stopper protrusions 71 and 72 may be formed on a surface of the stopper part 70 that faces the pair of stopper protrusions 21 and 22 . The pair of stopper protrusions 71 and 72 include 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.

Meanwhile, 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 shock. there is. A structure in which the tele stopper 60 can absorb an impact in the event of a vehicle crash will be described below with reference to FIGS. 2 to 6 .

2 is an exploded perspective view of a main part of a vehicle steering device according to an embodiment of the present invention, FIG. 3 is an enlarged exploded perspective view of the tele stopper shown in FIG. 2, and FIG. 4 is an exploded perspective view showing the bottom of the tele stopper shown in FIG. 5 is a side cross-sectional view showing the tele stopper before a vehicle crash accident, and FIG. 6 is a side cross-sectional view showing the tele stopper after a vehicle crash accident.

Referring to FIGS. 2 to 6 , the tele stopper 60 may include a stopper block 80 and a stopper plate 90 in order to absorb shock in the event of a vehicle crash.

The stopper block 80 is coupled to the inner tube 30 and can move along the tele slot 25 when the inner tube 30 moves in the axial direction.

The stopper plate 90 is coupled to the stopper block 80 so that when the inner tube 30 moves in the axial direction, it can move along 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 shock generated during a vehicle collision accident. Therefore, 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 at a minimum through the steering wheel.

The stopper plate 90 may be formed in a plate shape in which 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 portion 91 may be coupled to the stopper block 80 and disposed outside the stopper block 80 . A stopper portion 70 may be formed on the outer plate portion 91 . The outer plate portion 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 long 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 portion 92 may be disposed to face the inner surface of the stopper block 80 . The inner plate portion 92 may be disposed spaced downward from the inner surface of the stopper block 80 . The inner plate portion 92 may be formed to be long 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 It can be. Therefore, when the stopper block 80 is moved in the axial direction while the stopper plate 90 is separated from the stopper block 80, the bending portion 93 can be pushed by one end of the stopper block 80, thereby Accordingly, the stopper plate 90 may be deformed.

If 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, the outer plate portion 91 is preferably coupled to the stopper block 80 through a weak fastening member. In this embodiment, the outer plate portion 91 is coupled to the stopper block 80 and the inner tube 30 through rivets R1 and R2. Therefore, 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 rivets R1 and R2 are damaged and the outer plate part (91) can be separated from the stopper block (80).

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

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

Polygonal protrusions 83 and 84 inserted into the polygonal holes 33 and 34 formed in the inner tube 30 may be formed on an 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 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 to be spaced apart from each other in the axial direction of the inner tube 30 . The first polygon protrusion 83 may be inserted into the first polygon hole 33 , and the second polygon protrusion 84 may be inserted into the second polygon hole 34 .

Since the polygon protrusions 83 and 84 are inserted into the polygon 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 along with the inner tube (30) in the axial direction to push the bent 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 protrusions 83 and 84 are formed in polygonal shapes, and the polygonal holes 33 and 34 ) is preferably formed as a hole having a shape corresponding to the polygonal protrusions 83 and 84. In this embodiment, the polygonal protrusions 83 and 84 and the polygonal holes 33 and 34 are illustrated as being formed in a substantially rectangular shape, but may be variously changed to a triangular shape, a pentagonal shape, or a hexagonal shape.

Meanwhile, polygonal slot holes 91S1 and 91S2 may be formed in the outer plate portion 91 of the stopper plate 90 . The polygonal slot holes 91S1 and 91S2 may be formed at positions corresponding to the polygonal protrusions 83 and 84 formed on the stopper block 80 . Therefore, when the polygonal protrusions 83 and 84 of the stopper block 80 are inserted into the polygonal holes 33 and 34 of the inner tube 30 with the stopper block 80 assembled to the stopper plate 90 , Since the positions of the polygonal protrusions 83 and 84 can be grasped from the outside of the stopper plate 90, the tele stopper 60 can be easily assembled to the inner tube 30. Of course, the polygonal slot holes 91S1 and 91S2 may reduce the weight of the stuffer plate 90. The polygonal slot holes 91S1 and 91S2 may be formed in a shape corresponding to the polygonal protrusions 83 and 84, and since the polygonal protrusions 83 and 84 are formed in a rectangular shape in this embodiment, the polygonal slot holes 91S1, 91S2) is also formed in a rectangular shape. The polygonal slot holes 91S1 and 91S2 may include a first polygonal slot hole 91S1 and a second polygonal slot hole 91S2 that are spaced apart from each other in the axial direction of the outer plate portion 91 . The first polygonal slot hole 91S1 may be formed at a position corresponding to the first polygonal projection 83, and the second polygonal slot hole 91S2 may be formed at a position corresponding to the second polygonal projection 84. there is.

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

The stopper part 70 may be fastened to the bolt fastening parts 91A and 91B through a bolt B. The bolt B may include a first bolt fastened to the first bolt fastening part 91A and a second bolt fastened to the second bolt fastening part 91B. Since the stopper part 70 is coupled to the stopper plate 90 through the bolt B, which is a fastening member that is stronger than the rivets R1 and R2, in the event of a vehicle collision, the stopper part 70 has a stopper protrusion ( If the inner tube 30 is further moved in the axial direction while being in contact with 21 and 22, the rivets R1 and R2 may be damaged.

The stopper part 70 may be formed in a substantially rectangular plate shape. Bolt fastening holes 73 and 74 through which the bolts B pass may be formed in the stopper part 70 . The bolt fastening holes 73 and 74 may include a first bolt fastening hole 73 through which the first bolt passes, and a second bolt fastening hole 74 through which the second bolt passes. The first bolt fastening hole 73 and the second bolt fastening hole 74 may 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 portion 91A, and a second bolt fastening hole 74 may be formed on the second bolt fastening portion 91B. ) and a corresponding fourth bolt fastening hole 91F 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. It can be. The first bolt may pass through the first bolt fastening hole 73 and the third bolt fastening hole 91E, and the second bolt may pass through the second bolt fastening hole 74 and the fourth bolt fastening hole 91F. can penetrate

A pair of cutout holes 75 and 76 may be formed between the first bolt fastening hole 73 and the second bolt fastening hole 74 in the stopper part 70 . The weight of the stopper part 70 may be reduced by a pair of cut-out holes 75 and 76. The pair of cut-out holes 75 and 76 may open 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 an inner surface of one end of the stopper block 80 . In addition, an insertion hole 35 into which the guider unit 85 is inserted may be formed in the inner tube 30 . The insertion hole 35 may be formed to open in an axial direction 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 and disposed inside the inner tube 30 . A guide slot 86 through which the inner plate portion 92 is movably disposed may be formed in the guider unit 85 .

A portion of the bending portion 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 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 become transformed. 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 so that the shape of the bending part 93 can be deformed while maintaining the maximum. It is preferable to form a convex curved portion 87 corresponding to the shape of the bent portion 93 .

A pair of cutout holes 88 and 89 leading to the guide portion 85 may be formed on an 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 incision holes 88 and 89 may be formed from an outer surface to an inner surface of one end of the stopper block 80 . The pair of cut-out holes 88 and 89 may include a third cut-out hole 88 and a fourth cut-out hole 89 spaced apart from each other in the radial direction of the inner tube 30 .

The operation of the tele stopper 60 will be described as follows.

1 and 5 before a vehicle collision accident occurs, the outer plate portion 91 of the stopper plate 90 is connected to the stopper block 80 and the inner tube 30 through rivets R1 and R2. is bound to

In this state, when a vehicle collision accident occurs and the inner tube 30 is moved in the axial direction and inserted into the column housing 20, the stopper portion 70 formed on the stopper plate 90 moves the column housing 20 ) It is in contact with the stopper protrusions 21 and 22 formed on. In this state, if the inner tube 30 is further moved in the axial direction, as shown in FIG. 6, the rivets R1 and R2 are broken and the stopper plate 90 is separated from the stopper block 80, after which The bending portion 93 of the stopper plate 90 is pushed and deformed by the curved portion 87 formed at one end of the stopper block 80, and can absorb impact generated during the vehicle collision accident.

7 is a view showing the action of the rollers shown in FIGS. 2 to 4;

Referring to FIGS. 2 to 7 , rollers 11 and 12 having elasticity may be coupled to the tele stopper 60 . The rollers 11 and 12 are disposed to protrude from both sides of the tele stopper 60 and can come into contact with both sides of the tele slot 25 . Since the rollers 11 and 12 protrude from both sides of the tele stopper 60 and contact both sides of the tele slot 25, when the operator operates the multi-function switch, both sides of the tele stopper 60 and the tele slot ( 25), it is possible to prevent the inner tubes 11 and 12 from rotating in the circumferential direction by the gap C between both sides of the tele stopper 60, and as both sides of the tele stopper 60 collide with both sides of the tele slot 25, noise can be avoided.

Since the rollers 11 and 12 are formed of an elastic body having elasticity, shock can be absorbed and noise can be prevented. For example, the rollers 11 and 12 may be formed of a rubber material.

In addition, the rollers 11 and 12 come into contact with both sides of the tele slot 25 so that the tele stopper 60 can be rotated as the tele slot 25 is moved. Accordingly, when the tele-in or the tele-out is performed smoothly, the user can adjust the tele-in or the tele-out with little force.

The rollers 11 and 12 may be formed in a disk shape. Therefore, since the circumferential surfaces of the rollers 11 and 12 are formed as outwardly convex curved surfaces, the driver manipulates the tele lever 50 to the open position or the locked position to widen or narrow the radial width of the tele slot 25. Even when lost, both sides of the rollers 11 and 12 can always maintain contact with both sides of the teleslot 25.

The rollers 11 and 12 are elastically deformed when the operator operates the tele lever 50 to the open or locked position, and both sides are formed in a structure capable of maintaining contact with both sides of the tele slot 25 it is desirable

Since the rollers 11 and 12 rotate while moving in the axial direction while being in contact with both sides of the tele slot 25, the rollers 11 and 12 can maintain a state rotatably coupled to the tele stopper 60 there is.

Roller insertion grooves 65 and 66 into which the rollers 11 and 12 are inserted may be formed on an inner surface of the tele stopper 60 so that both sides thereof are open. Since the roller insertion grooves 65 and 66 are open on both sides, both ends of the rollers 11 and 12 protrude to both sides of the tele stopper 60 through both open sides of the roller insertion grooves 65 and 66. can be placed. The roller insertion grooves 65 and 66 may be formed in a circular shape corresponding to the rollers 11 and 12 .

Coupling holes 11A and 12A may be formed in the center of the rollers 11 and 12 . Coupling protrusions 65A and 66A may be protruded from the inner surfaces of the roller insertion grooves 65 and 66 . The coupling protrusions 65A and 66A are inserted into the coupling holes 11A and 12A to rotatably couple the rollers 11 and 12 .

The rollers 11 and 12 may include a first roller 11 and a second roller 12 . The first roller 11 is protruded to one side of the tele stopper 60 and can come into contact with one side of the tele slot 25 . The second roller 12 is protruded to the other side of the tele stopper 60 and can come into contact with the other side of the tele slot 25 .

The coupling holes 11A and 12A may include a first coupling hole 11A and a second coupling hole 12A. The first coupling hole 11A may be formed at the center of the first roller 11 . The second coupling hole 12A may be formed at the center of the second roller 12 .

The coupling protrusions 65A and 66A may include a first coupling protrusion 65A and a second coupling protrusion 66A. The first coupling protrusion 65A is inserted into the first coupling hole 11A to rotatably couple the first roller 11 . The second coupling protrusion 66A is inserted into the second coupling hole 12A to rotatably couple the second roller 12 .

The roller insertion grooves 65 and 66 may include a first roller insertion groove 65 and a second roller insertion groove 66 . The first roller 11 may be inserted into the first roller insertion groove 65 . A first coupling protrusion 65A may be formed on an inner surface of the first roller insertion groove 65 . The second roller 12 may be inserted into the second roller insertion groove 66 . A second coupling protrusion 66A may be formed on an inner surface of the second roller insertion groove 66 .

The first roller insertion groove 65 and the second roller insertion groove 66 may communicate with each other. The first roller insertion groove 65 and the second roller insertion groove 66 may be arranged obliquely with respect to the axial direction so that they can be coupled and disposed even with a small width in the axial direction. The first roller insertion groove 65 may be disposed above the second roller insertion groove 66 . Therefore, when the first roller 11 is inserted into the first roller insertion groove 65 and the second roller 12 is inserted into the second roller insertion groove 66, the first roller 11 It may be disposed above the second roller 12 .

Meanwhile, in this embodiment, the tele stopper 60 is composed of a stopper block 80 and a stopper plate 90, and the rollers 11 and 12 are coupled to the stopper block 80. That is, the roller insertion grooves 65 and 66 are formed in the stopper block 80. The roller insertion grooves 65 and 66 are formed at midpoints between a pair of polygonal protrusions 83 and 84 of the stopper block 80 .

However, in order for the rollers 11 and 12 to be coupled to the tele stopper 60, the tele stopper 60 does not necessarily need to be composed of the stopper block 80 and the stopper plate 90, and the inner tube 30 Any structure capable of limiting the axial movement of the inner tube 30 by being caught by the stopper protrusions 21 and 22 at the maximum tele-in position may be modified in various ways.

The operation of the rollers 11 and 12 is described as follows.

Since the width of the tele slot 25 widens when the driver operates the tele lever 50 to the open position in order to adjust the position of the steering wheel to a position suitable for his or her physical condition, both sides of the rollers 11 and 12 The pressing force received from both sides of the teleslot 25 is weakened, and accordingly, the rubber rollers 11 and 12 change to the original shape of a circular plate to maintain contact with both sides of the teleslot 25. can

After that, the driver can move the inner tube 30 in the axial direction to move the position of the steering wheel to a position suitable for his/her physical condition. As the driver moves the inner tube 30 in the axial direction, the rollers 11 and 12 can be rotated while being in contact with both sides of the teleslot 25 . Accordingly, the driver can tele-in or tele-out with little force.

In addition, when the driver adjusts the position of the steering wheel to a position suitable for his/her physical condition and then operates the tele lever 50 to the locked position, the width of the tele slot 25 narrows, so the rollers 11 and 12 Both sides of ) become strong in the pressing force received from both sides of the teleslot 25, and accordingly, the rollers 11 and 12 maintain contact with both sides of the teleslot 25 while their circumferential surfaces are slightly distorted inward. can

As described above, in the vehicle steering device 100 according to the embodiment of the present invention, the rollers 11 and 12 rotatably coupled to the tele stopper 60 are in contact with both sides of the tele slot 25. , The tele-in or tele-out operation is smooth, so the driver can adjust the tele-in or tele-out with little force.

In addition, in the vehicle steering device 100 according to the embodiment of the present invention, since the rollers 11 and 12 protrude from both sides of the tele stopper 60 and contact both sides of the tele slot 25, the driver When the multi-function switch is operated, rotation of the inner tube 30 in the circumferential direction can be prevented due to the gap C between both sides of the tele stopper 60 and both sides of the tele slot 25.

In addition, in the vehicle steering device 100 according to an embodiment of the present invention, when the inner tube 30 is inserted into the column housing 20 from the maximum telein position due to an impact generated during a vehicle collision accident, the stopper plate After the stopper block 90 is separated from the stopper block 80, it is pushed and deformed by the stopper block 80 to absorb the impact, so that the driver can be prevented from being seriously injured by bumping into the steering wheel.

Those skilled in the art to which the present invention pertains will understand that the present invention can be embodied in other specific forms without changing its technical spirit or essential features. 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 equivalent concepts thereof should be construed as being included in the scope of the present invention.

11, 12: roller 11A, 12A: coupling hole
20: column housing 25: tele slot
30: inner tube 40: steering shaft
60: tele stopper 65, 66: roller insertion groove
65A, 66A: coupling protrusion 70: stopper part
80: stopper block 90: stopper plate
91: outer plate portion 92: inner plate portion
93: bending part

Claims (7)

steering shaft 40;
an inner tube 30 surrounding the outer circumference of the steering shaft 40;
a column housing 20 surrounding the outer circumference of the inner tube 30 and having a teleslot 25 opened at one end thereof in an axial direction;
When the inner tube 30 is coupled to the inner tube 30 and moves along the teleslot 25 when the inner tube 30 is moved in the axial direction, and the inner tube 30 is moved in the axial direction by a predetermined section a tele stopper 60 contacting the stopper protrusions 21 and 22 formed on the column housing 20 to limit axial movement of the inner tube 30; and
rollers 11 and 12 rotatably coupled to the tele stopper 60, protruding from both sides of the tele stopper 60, contacting both sides of the tele slot 25, and having elastic force; Vehicle steering system. The method of claim 1,
On the inner surface of the tele stopper 60, roller insertion grooves 65 and 66 into which the rollers 11 and 12 are inserted are formed so that both sides are open,
Coupling holes 11A and 12A are formed at the center of the rollers 11 and 12,
A steering device for a vehicle in which engaging protrusions 65A and 66A are formed on inner surfaces of the roller insertion grooves 65 and 66 to be inserted into the coupling holes 11A and 12A and rotatably couple the rollers 11 and 12. . The method of claim 2,
The rollers 11 and 12,
A first roller 11 protruding to one side of the tele stopper 60 and contacting one side of the tele slot 25;
A second roller 12 protruding to the other side of the tele stopper 60 and contacting the other side of the tele slot 25,
The coupling holes 11A and 12A are
A first coupling hole 11A formed in the center of the first roller 11;
It includes a second coupling hole 12A formed in the center of the second roller 12,
The coupling protrusions 65A and 66A,
A first coupling protrusion 65A inserted into the first coupling hole 11A and rotatably coupling the first roller 11;
and a second coupling protrusion 66A inserted into the second coupling hole 12A and rotatably coupling the second roller 12. The method of claim 3,
The roller insertion grooves 65 and 66,
A first roller insertion groove 65 into which the first roller 11 is inserted and the first engaging protrusion 65A formed on an inner surface thereof;
A steering device for a vehicle comprising a second roller insertion groove (66) into which the second roller (12) is inserted and the second coupling protrusion (66A) formed on an inner surface. The method of claim 4,
The first roller insertion groove (65) and the second roller insertion groove (66) communicate with each other and are arranged obliquely with respect to the axial direction. The method of claim 1,
The tele stopper 60,
A stopper block 80 coupled to the inner tube 30 and moved along the tele slot 25 when the inner tube 30 moves in the axial direction;
When the inner tube 30 is moved in the axial direction by being coupled to the stopper block 80, it moves in the axial direction together with the stopper block 80 and comes into contact with the stopper protrusions 21 and 22 so that the inner tube It includes a stopper plate 90 formed with a stopper portion 70 that limits the axial movement of the 30,
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 part 70 is in contact with the stopper protrusions 21 and 22, and It is pushed and deformed by the stopper block 80,
The roller (11, 12) is a vehicle steering device coupled to the stopper block (80). The method of claim 6,
The stopper plate 90,
An outer plate portion 91 coupled to the stopper block 80 and disposed outside the stopper block 80 and having the stopper portion 70 formed thereon;
An inner plate part 92 disposed in parallel with the outer plate part 91 inside the inner tube 30;
A steering device for a vehicle including 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.

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