KR100940068B1 - Steering column for vehicle having tilting and telescopic device - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a steering drive that is fixed to a predetermined portion of a vehicle, and to powerfully implement tilt and telescopic operation for a steering shaft. A hinge block pivotally supported by a tilt bracket constituting the first hinge shaft, a steering shaft rotatably connected to one side of the hinge block, a main housing accommodating the steering shaft on the other side, and a main housing A tilting and telescopic steering drive having a sliding column housing capable of conveying in a longitudinal direction with respect to the longitudinal direction, and telescopic means for extending and contracting the sliding column housing from the main housing. On the end via the first hinge axis A tilting means hinged to pivot the main housing up and down, wherein the tilting means includes: a band-shaped support column fixed to the other side of the upper housing and a first extension part protruding from one side of the support column; T-shaped carrier having a screw thread formed therein so that the first electric motor fastened and fastened, a first conveying screw having one end connected to the first drive shaft of the first electric motor, and the other side of the conveying screw are screwed together, and the T-shaped. One end is hinged to the second hinge shaft of at least one side of the carrier and the other end includes a rotation lever hinged to the third hinge shaft of the other side of the main housing.

Description

Tilt and telescopic steering column {Steering column for vehicle having tilting and telescopic device}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tilt and telescopic steering drive for a vehicle that enables the tilt and telescopic operation to be strongly implemented to fit the driver's physique or driver's position in a vehicle. It is related to the driving device.

In general, the tilt and telescopic steering device is a kind of variable steering wheel. The tilt function adjusts the steering wheel angle to fit the driver's physique and the driver's posture, and the telescopic function doubles the steering shaft and the housing. It is a function to stretch the length by sliding in the axial direction. Although the tilt and telescopic functions have been driven separately by a manual operation method by a tilt operation and a telescopic operation, they are cumbersome in operation and try to replace them with an electric drive method. However, when the motor is implemented, the overall structure is very complicated. The complex structure has some disadvantages such as design error.

The present invention has been made in view of the above disadvantages, and by simplifying the overall structure through the transmission of the driving force of the electric motor, it is possible to easily control the tilt and telescopic operation, so that the operator can easily tilt and fine It is an object to provide a tilt and telescopic steering drive that enables telescopic operation.

In order to achieve the above object, the tilt and telescopic steering drive device according to the present invention, the hinge housing to the tilt bracket forming the upper housing fixed to a predetermined portion of the vehicle, and the first hinge shaft fixed to one side of the upper housing. A hinge block supported by the support, a steering shaft rotatably connected to one side of the hinge block, a main housing accommodating the steering shaft on the other side, a sliding column housing movable in a longitudinal direction with respect to the main housing, A tilt and telescopic steering drive having telescopic means for extending and contracting the sliding column housing from the main housing,

A tilting means hinged to pivot the main housing up and down via a first hinge shaft at an end of the sliding column housing to which the steering shaft is connected,

The tilt means,

A band-shaped support column fixed to the other side of the upper housing, a first electric motor fastened and fastened to a first extension part protruding from one side of the support column, and one end of the first drive shaft of the first electric motor The connected first transfer screw, a T-shaped carrier having a thread formed therein so that the other side of the transfer screw is screwed, and one end is hinged to at least one second hinge shaft of the T-shaped carrier, and the other end is connected to the main housing. It characterized in that it comprises a pivoting lever hinged to the third hinge axis of the other side.

In addition, the second hinge axis and the third hinge axis may be offset so as to form a predetermined distance step in the left and right directions when viewed from the side, and preferably formed in a b-shape.

In addition, the outer side surface of the support column is formed integrally with the first bushing portion to which the bearing is connected, it is preferably configured to guide the rotational movement of the first drive shaft and the first transfer screw.

The telescopic means may further comprise a slit penetrating in the longitudinal direction on the other side of the main housing, a s-shaped carrier connected to the sliding column housing via a slit connected to an outer circumferential side of the sliding column housing through the slit, and ㅡ It is preferable that the other side is screwed to the shaped carrier and one end includes a second transfer screw connected to the second drive shaft of the second electric motor coupled to one side of the main housing.

In addition, the outer side of the main housing is preferably integrally formed with a second bush portion to which the bearing is connected, and configured to guide rotational movement of the second drive shaft and the second transfer screw.

In addition, between the first and second drive shaft and the first and second transfer screw is preferably to be interconnected via the first and second flexible wires for the flexible transmission of rotational force.

In addition, the rotation amount of the first conveying screw is a first lever provided at one end of the T-shaped carrier and a first lever for positioning the internal contact on and off by positioning at the limit point of the mechanical movement operation in the longitudinal direction by the first lever Controlled by a limit switch, the amount of rotation of the second conveying screw is connected to the rear end of the? -Shaped carrier and is positioned at the limit of mechanical movement operation in the longitudinal direction to move the second lever on and off; It is preferred to be controlled by a second limit switch fixedly coupled to the second bush portion, which is switched by means of a medium.

Hereinafter, the tilt and telescopic steering column according to the present invention will be described in detail with reference to the accompanying drawings.

1 is a perspective view showing the tilt and telescopic steering drive device according to the present invention from the upper left side, FIG. 2 is a side structural view of the steering drive device of FIG. 1, and FIG. 3 is an upper housing of the steering drive device of FIG. 2. 4 is a perspective view illustrating the steering drive of FIG. 1 as viewed from the opposite direction, and FIG. 5 is an upper housing and the main housing of the steering drive of FIG. And a side structure diagram after the sliding column housing, the support column, the first and second electric motors, and the first and second limit switches are removed, and FIG. 6 is an upper housing, a main housing, and a sliding column of the steering drive of FIG. 4. Figure 4 is a side structural view after deleting the housing, Figure 7 is a perspective view showing only the main components excluding the steering shaft in the steering drive of Figure 5 8 is a bottom structural view showing a bottom portion of the steering drive of FIG. 6.

As illustrated in the drawing, the tilt and telescopic steering drive device of the present invention includes an upper housing 10 fixed to a predetermined portion of a vehicle, a main housing 20 under the upper housing 10, and the main housing ( 20 is roughly divided into a sliding column housing 30 which can be transferred in the longitudinal direction.

In addition, the tilt block and the telescopic steering drive device, the hinge block 50 is hinged rotatably supported on the tilt bracket 40 constituting the first hinge axis fixed to one side of the upper housing 10 fixed to a predetermined portion of the vehicle. And a steering shaft (S1) rotatably connected to one side of the hinge block (50), a main housing (20) for accommodating the steering shaft (S1) to the other side, and a length with respect to the main housing (20). And a telescopic means 200 for extending and contracting the sliding column housing 30 and the sliding column housing 30 from the main housing 20.

In addition, the end of the sliding column housing 30 to which the steering shaft S1 is internally connected is pivotally supported by a tilting means 100 which is hinged to pivot up and down the main housing 20 via a first hinge axis. It is.

In addition, the tilt means 100, the band-shaped support column 110 fixed to the other side of the upper housing 10, and the first extension portion 111 protruding by extending to one side of the support column 110. The first transfer motor 125 and the first transfer screw 125, one end of which is connected to the first drive shaft 121 of the first electric motor 120, and the first transfer screw 125 fastened to One end is hinged to the T-shaped carrier 140 and the second hinge shaft (H2) of at least one side of the T-shaped carrier 140 so that the other side is screwed, and the other end is the main housing ( 20 is provided with a rotation lever 150 hinged to the third hinge shaft H3 on the other side.

In addition, the second hinge axis H2 and the third hinge axis H3 are offset from each other to form a predetermined distance step in the left and right directions when viewed from the side, and are mutually connected via the rotation lever 150 formed in a b-shape. Crosslinked.

In addition, the outer side surface of the support column 110 is formed integrally with the first bush portion 130 is connected to the bearing, so as to guide the rotational movement of the first drive shaft 121 and the first transfer screw 125. Consists of.

In addition, the telescopic means 200, the slit 21 formed in the longitudinal direction through the other side of the main housing 20, and the connection bolt to the outer peripheral side of the sliding column housing 30 through the slit 21 A second carrier is connected to the sliding column housing 30 via the 210 and the other end is screw-coupled to one end of the main housing 20. 2 is provided with a second transfer screw 225 connected to the second drive shaft 221 of the electric motor 220.

In addition, the outer surface of the main housing 20 is integrally formed with a second bush portion 230 to which the bearing is connected, so as to guide the rotational movement of the second drive shaft 221 and the second transfer screw 225. Consists of.

In addition, the first and second drive shafts 121 and 221 transfer driving force as a medium between the first and second electric motors 220 and the first and second transfer screws 225, and a flexible wire (cable). Is designed to take the trajectory freely.

In addition, the first and second tubes 123 and 223 are disposed outside the first and second driving shafts 121 and 221 that are flexible wires to protect the first and second driving shafts between the first and second driving shafts. At the same time, the safety of the operator was also considered during assembly.

In addition, the amount of rotation of the first conveying screw 125 is the first lever 160 provided at one end of the T-shaped carrier 140 and the mechanical movement operation in the longitudinal direction by the first lever 160. It is controlled by the first limit switch 170, which is located at the threshold to turn on and off the internal contact, the amount of rotation of the second transfer screw 225 is connected to the rear end of the-shaped carrier 240 in the longitudinal direction By a second limit switch 270 fixedly coupled to the second bush portion 230, which is switched by means of a second lever 260 which is located at the limit of mechanical movement operation of the switch and is operated to turn on and off an internal contact. It is configured to be controlled.

According to this configuration, when performing the tilt and telescopic operation of the steering wheel, the first electric motor 120 of the tilt means 100 and the second electric motor 220 of the telescopic means 200 by electric transmission Are driven to rotate by operating individual switches (not shown).

In addition, when the first drive shaft 121 and the second drive shaft 221 of the first and second electric motor 220 is rotated forward and backward, the first and second feed connected to the first and second drive shaft 221 As the screw 225 is rotated, the T-shaped carrier 140 of the tilt end 100 screwed to the first and second conveying screws 225 and the -shaped carrier of the telescopic means 200 ( 240 is reciprocated in the longitudinal direction.

In addition, the T-shaped carrier 140 and the -shaped carrier 240 is, for example, a ball screw method, which is an electric screw for transmitting rotational driving force by circulating a steel ball between the screw shaft and the nut, and the form of the thread 30 ° (29 °) trapezoidal sliding screw is formed by selecting a Tr screw method for transmitting power by rotating, etc. In the present invention, the T-shaped carrier 140 or-shaped carrier 240 is formed by a sliding screw method An example will be described.

Here, since the sliding screw method has a high frictional resistance and thus has a self-tightening force, the sliding screw method has an advantage of being easily positioned when the tilt means 100 or the telescopic means 200 are released.

In addition, since the restraining force is generated by the driving release of the motor, as shown in FIG. 2, the slide column housing 30 connected to the main housing 20 is switched to the restraining state in a movable state.

At this time, when the driver grabs the steering wheel and drives the tilt means 100 and the telescopic means 200 in accordance with its driving posture and drives the first and second electric motors 220, the first and second motors are driven. 2 In the direction in which the rotational driving force of the electric motor 220 is transmitted, for example, when the movement of the sliding column housing 30 is completed to the desired tele position around the main housing 20, the driver may move the control switch. Just disable it.

In addition, since the first and second drive shafts 221 which are the flexible wires have a structure in which both ends thereof are compressed in a quadrangular form and are twisted in the form of a spring, the first and second electric motors 220 are flexibly connected to each other. Will be able to connect between the first and second transfer screw 225.

Meanwhile, the present invention operates the operation switch (not shown) to start the telescopic operation, driving the second electric motor 220 to transfer the rotational power to the second transfer screw 225,- The female carrier 240 is moved in the longitudinal direction, for example, in the left direction of FIG. 4, in which a connection bolt 210 coupled to the? -Shaped carrier 240 is directly connected to the slide column housing 30. While moving along the slit 21 type guide hole formed in the main housing 20, the slide column housing 30 is automatically tele-moved.

Of course, in the above description, when the telescopic and tilting operation reaches a set value, the first and second levers 260 touch the operation portions of the first and second limit switches 270 and the first and second electric motors. By generating a signal as a deactivation signal source to the controller (not shown) to cut off the power supply of 220, it is possible to individually limit the maximum operable range of the tilt / tele during the tilt / tele operation.

Therefore, as described above, by configuring the tilt and telescopic operation in conjunction with the structural transmission for telescopic and tilting, the driver can adjust the steering wheel by his or her body shape, driving posture or other causes. When changing the direction, it is possible to realize the release of the binding force on the telescopic and the release of the binding force on the tilting by a simple switch operation.

Thus, according to the tilt and telescopic steering column of the present application, in order to enable the tilt restraint and telescopic restraint and operation to be performed electrically while simplifying the overall structure, even if the driver operates the switch once more firmly tilt and By providing a tilt and telescopic steering drive that enables to initiate / regulate telescopic operation, the configuration as described above eliminates additional configuration for restraint during a separate telescopic or tilting operation. There is an excellent effect such as simplifying the tightening and restraint structure.

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

1 is a perspective view showing the tilt and the telescopic steering drive according to the present invention from the upper left side,

Figure 2 is a side structural view of the steering drive of Figure 1,

3 is a side structural view after deleting the upper housing, the main housing and the sliding column housing of the steering drive device of FIG.

4 is a perspective view of the steering drive of FIG. 1 as viewed from the opposite direction;

FIG. 5 is a side structural view of the steering housing of FIG. 4 after the upper housing, the main housing, the sliding column housing, the support column, the first and second electric motors, and the first and second limit switches 270 are deleted;

Figure 6 is a side structural view after deleting the upper housing, the main housing and the sliding column housing of the steering drive of Figure 4,

7 is a perspective view showing only main components excluding a steering shaft in the steering drive of FIG. 5, and

8 is a bottom structure diagram illustrating a bottom portion of the steering drive of FIG. 6.

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

10: upper housing 20: main housing

30: slide column housing 40: tilt bracket

50: hinge block 100: tilt means

110: support column 120: first electric motor

130: first bush portion 140: T-shaped carrier

150: rotation lever 160: first lever

200: telescopic means 210: connection bolt

220: second electric motor 230: second bush portion

240: ㅡ shaped carrier

Claims (7)

An upper housing fixed to a predetermined portion of the vehicle, a hinge block supported hingeably on a tilt bracket forming a first hinge shaft fixed to one side of the upper housing, and a steering shaft rotatably connected to one side of the hinge block. And a main housing accommodating the other side of the steering shaft, a sliding column housing movable in a longitudinal direction with respect to the main housing, and a telescopic means for extending and contracting the sliding column housing from the main housing. In the telescopic steering drive, A tilting means hinged to pivot the main housing up and down via a first hinge shaft at an end of the sliding column housing to which the steering shaft is connected, The tilt means, A band-shaped support column fixed to the other side of the upper housing, a first electric motor fastened and fastened to a first extension part protruding from one side of the support column, and one end of the first drive shaft of the first electric motor The connected first transfer screw, a T-shaped carrier having a thread formed therein so that the other side of the transfer screw is screwed, and one end is hinged to at least one second hinge shaft of the T-shaped carrier, and the other end is connected to the main housing. Tilt and telescopic steering drive device comprising a pivoting lever hinged to the third hinge shaft of the other side. The method of claim 1, And the second hinge shaft and the third hinge shaft are offset to form a predetermined distance step in the left and right directions when viewed from the side. The method of claim 2, A tilting and telescopic steering drive device, characterized in that the outer side surface of the support column is formed integrally with the first bush portion to which the bearing is connected, to guide rotational movement of the first drive shaft and the first transfer screw. The method of claim 1, The telescopic means, A slit penetrating in the longitudinal direction on the other side of the main housing, a-shaped carrier connected to the sliding column housing via a connecting bolt to the outer circumferential side of the sliding column housing through the slit, and the other side is screwed to the-shaped carrier Tilt and telescopic steering drive unit, characterized in that it comprises a second conveying screw coupled to the second drive shaft of the second electric motor coupled to one side of the main housing. The method of claim 4, wherein Tilt and telescopic steering drive, characterized in that the outer side of the main housing is integrally formed with a second bush portion to which the bearing is connected to guide the rotational movement of the second drive shaft and the second transfer screw. The method according to claim 1 or 4, Tilt between the first and second electric motor and the first and second conveying screw through the first and second drive shaft which is the first and second flexible wire for the flexible transmission of the rotational force and Telescopic steering drive. The method according to claim 2 or 5, The rotation amount of the first conveying screw is a first lever provided at one end of the T-shaped carrier and a first limit switch for turning on and off an internal contact by being located at a limit point of a mechanical movement operation in the longitudinal direction by the first lever. Controlled by The amount of rotation of the second conveying screw is switched by a second lever connected to the rear end of the? -Shaped carrier and positioned at a limit point of a mechanical movement operation in the longitudinal direction and operative to turn on and off an internal contact. Tilt and telescopic steering drive, characterized in that to be controlled by the second limit switch 270 fixedly coupled to the bush portion.

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