KR20010053959A - swing in type intermediate steering shaft assembly - Google Patents

Abstract

PURPOSE: An intermediate steering shaft assemblage is provided to conveniently assemble by combining steering gear and a steering shaft with a swing in type and to simplify entire structure. CONSTITUTION: An intermediate steering shaft assemblage(1) is composed of an intermediate steering shaft(10) and two joints(20,30) to deliver manipulating force of a steering wheel into a steering gear by being mounted on a lower end of a steering column. The joints are mounted both ends of the intermediate steering shaft and connected to the steering shaft and the steering gear. the joints are composed of outer yokes(25,35) engaged with a connect shaft unit(3) of the steering shaft and the steering gear and inner yokes(21,31) combined both ends of the intermediate steering shaft by cross engaged to the outer yokes. A slide typed combined unit(26) is formed on an outer yoke of a side of the joint, and a swing in typed combined unit(36) is formed on the outer yoke of the other side of the joint.

Description

Swing in type intermediate steering shaft assembly

The present invention relates to an intermediate steering shaft assembly for transmitting a steering force of a steering wheel to a steering gear in a steering apparatus for adjusting a driving direction of a vehicle, and more particularly, among joints coupled to both ends of an intermediate steering shaft. In addition, assembling is convenient as well as the overall structure by forming a fastening part open to have the same diameter in the axially perpendicular direction in one side of the yoke so that the steering gear or steering shaft can be coupled in a swing-in manner when mounted. It relates to a swing in type intermediate steering shaft assembly to simplify the.

In general, the vehicle is equipped with a steering device that can adjust the direction of the wheel to adjust the direction of movement of the car, the steering device as described above is a manual steering device that obtains steering power purely by the driver's power and the driver's steering power There is a power steering with a separate power unit to assist.

As shown in FIG. 1, the most basic operation concept of the steering apparatus is to operate the steering wheel 111 of the vehicle as shown in FIG. 1 so that the driving direction of the vehicle is determined by the rotation of the wheel by rotating the knuckle to which the tire is connected. It is.

That is, when the steering wheel 111 is rotated, the steering shaft 115 connected to the steering column 113 is rotated and the steering gear 117 connected to the steering shaft 115 is operated by the tie. By moving the rod 119, the tire is rotated by rotating the knuckle connected to the tie rod 119.

Here, the motorized steering device is configured to connect a separate hydraulic device to the basic configuration as described above to double the steering force provided through the steering wheel 111 and the steering shaft 115 to the knuckle.

As described above, the steering device is a steering wheel 111 and the steering shaft 115 as a component for transmitting the driver's operating force to the steering device, whether manual or power type, the steering shaft 115 is a driver It connects the located driver's seat and the components under the driver's seat where the actual steering action takes place and delivers the steering power provided by the driver.

Therefore, the steering shaft 115 as described above is in a state other than the driver's seat in a state in which the state of the steering wheel 111 installed in the driver's seat is most suitable for the driver, that is, the installation angle and the degree of protrusion are made easy to drive. In order to maintain proper rotational torque transmission state between the other steering device components installed at the position of, it is possible to transmit the refracted rotational force by having a divided structure instead of being manufactured integrally.

2 and 3 illustrate an intermediate steering shaft assembly 116 located at a lower end of the steering column 113 in the steering shaft 115 as described above and connected to the steering gear 117. The intermediate steering shaft assembly 116 is composed of two stages, the intermediate steering shaft 121 having a slip joint 122, the intermediate shaft for connection with the steering shaft 115 and the steering gear 117. It is composed of joints 124 and 127 coupled to upper and lower ends of the steering steering shaft 121, respectively.

In addition, each of the joints 124 and 127 has a structure in which two yokes 125, 126, 128, and 129 are cross-connected, and are connected to the steering shaft 115 and the steering gear 117, respectively. The yoke 126, 129 of the coupling portion 126a (129a) is formed to be cut so that the pressure can be fastened by the bolt 130, one of the two joints (124, 127) of the joint 124 The yoke 125 positioned inside to be detachable from the mid steering shaft 121 is cut so that the fastening portion 125a coupled to the intermediate steering shaft 121 can be pressed by the bolt 130. Formed.

Accordingly, the steering wheel assembly 116 has a steering wheel even when the steering operation line is bent as a whole by the bending displacement of the joints 124 and 127 coupled to both ends of the intermediate steering shaft 121. The operating force of 111 can be smoothly transmitted to the steering gear 117.

In addition, when the steering shaft 115 and the steering gear 117 is assembled and mounted, the outer yoke 129 of the joint 127 welded to the intermediate steering shaft 121 is fastened. Sliding in the axial direction to the (129a), and the outer yoke 126 of the joint 124 in a state separated from the intermediate steering shaft 121 slidably tightened in the axial direction with the fastening portion (126a), and then The intermediate steering shaft 121 and the joint (through the axial sliding of the fastening portion 125a formed on the slip joint 122 of the mid steering shaft 121 and the inner yoke 125 of the separated joint 124). 124 are fastened to each other.

However, in the conventional intermediate steering shaft assembly 116 as described above, since the fastening portions 125a, 126a, 129a of the joints 124, 127 are separated at three positions and are bent at 90 °, the bolting operation is performed. As it is cumbersome, the slip joint 122 and the joints 124 and 127 of the fastening portions 125a, 126a, 129a have to be slid in the axial direction, there is a problem that workability is reduced.

In addition, the slip joint 122 formed in the middle portion of the intermediate steering shaft 121 is complicated in the overall structure, thereby lowering productivity and increasing production cost.

Therefore, the present invention has been made in view of the above problems, by mounting the swing gear or steering shaft and swing-in method when mounted to facilitate the assembly work as well as the swing to simplify the overall structure The object is to provide an in-type intermediate steering shaft assembly.

1 is a perspective view showing an example of a general steering device

2 is a front view showing a conventional intermediate steering shaft assembly of the steering apparatus shown in FIG.

3 is a plan view showing a yoke of one joint of the conventional intermediate steering shaft assembly shown in FIG.

4 is a front view showing a swing-in type intermediate steering shaft assembly according to an embodiment of the present invention.

FIG. 5 illustrates a yoke having a swing recognition fastening portion at a joint of the intermediate steering shaft assembly illustrated in FIG. 4.

Figure 5a is a front view partially cut the swing recognition fastening portion of the yoke

5B is a side view

FIG. 6 illustrates a process of assembling a yoke having a swing recognition fastening portion in a joint of an intermediate steering shaft assembly illustrated in FIG. 4.

5A is an exploded state diagram of a swing recognition fastener;

Figure 5b is a coupling state of the swing recognition fastening portion

Explanation of symbols on the main parts of the drawings

1: intermediate steering shaft assembly 10: intermediate steering shaft

20, 30: joint 21, 25, 31, 35: yoke

26: sliding fastener 36: swing recognition fastener

37: opening 38: fastening piece

40: bolt

In the present invention for achieving the above object, in the intermediate steering shaft assembly is a joint for coupling to the steering shaft and the connecting shaft portion of the steering gear in a refractive state, respectively, at both ends of the intermediate steering shaft, the joint The outer end of the yoke is opened to have the same width in the axial perpendicular direction to the fastening portion is formed to be coupled to the connecting shaft portion in the axial perpendicular direction, the closing of the open portion of the fastening bolt to support one side of the connecting shaft portion is fastened It is a feature to provide an intermediate steering shaft assembly.

In addition, the fastening portion has a curved structure corresponding to the connecting shaft portion having a cross-sectional structure of the double-D type, the bolt is fastened in two from the upper and lower sides of the fastening portion is characterized in that the tapered structure.

Hereinafter, an embodiment of the present invention will be described in more detail based on the accompanying drawings.

4, 5 and 6 illustrate an intermediate steering shaft assembly 1 according to an embodiment of the invention. The intermediate steering shaft assembly (1) is located at the bottom of the steering column and consists of an intermediate steering shaft (10) and two joints (20) (30) to transmit the steering force of the steering wheel to the steering gear. One of the joints 30 has a structure for mounting in a swing-in type.

In other words, joints 20 and 30 coupled to the steering shaft and the steering gear are installed at both ends of the intermediate steering shaft 10. The joints 20 and 30 are crosswise connected to the outer yoke 25 and 35 and the outer yoke 25 and 35 coupled to the steering shaft and the connecting shaft portion 3 of the steering gear. Inner yoke 21, 31 is coupled to both ends of the (10).

A sliding fastening part 26 is formed at the outer yoke 25 of the one side joint 20, and a swing recognition fastening part 36 is formed at the outer yoke 35 of the other joint 30.

First, the slidable fastening portion 26 is formed in a circumferential cutout in the axial direction in order to slidably engage the connecting shaft portion 3 of the steering shaft or the steering gear in the axial direction, and bolts 40 at both ends of the cutout portion. ) Has a structure in which the fastening piece 28 for fastening is protruded outward along the axial direction.

Swing recognition fastening portion 36 is an opening 37 in the axially angular direction on the circumference so as to be coupled to the swing shaft or the connecting shaft portion 3 of the steering gear in the axially perpendicular direction to the same diameter, Fastening pieces 38 for fastening the two bolts 40 to the two ends of the opening part 37 are formed to protrude outward along the axial direction. This fastening portion 36 has a curved structure corresponding to the connecting shaft portion 3 having a double-D cross-sectional structure.

In addition, the upper and lower ends of the fastening piece 38 is formed with a fastening hole 39 through which the two bolts 40 are coupled in the axially perpendicular direction, respectively, and an end of the bolt 40 passing through the fastening hole 39. The nut 43 is fastened to the part. Then, one of the two bolts 40 is formed in a tapered structure by increasing the fastening force. When the bolt 40 is tightened, as the fastening piece 38 is pressed toward the center, the opening part 37 is tightened, pushing up the connecting shaft part 3 of the steering shaft or the steering gear to be fastened, and opening part fastening part ( It is possible to give a tightening force by reducing the interval of 26) 36.

Meanwhile, since the inner yoke 21 and 31 of the joints 20 and 30 have a structure in which the intermediate steering shaft 10 is integrally formed, the inner yoke 21 and 31 are welded to the intermediate steering shaft 10 by a serration joint structure or the like. Has a structure.

Looking at the mounting process of the intermediate steering shaft assembly 1 according to an embodiment of the present invention configured as described above are as follows.

First, in the state where the steering gear 117 and the steering shaft 115 are assembled and mounted, for example, a joint located at an upper end portion of the joints 20 and 30 coupled to the intermediate steering shaft 10. 20 is slidably coupled to the connecting shaft portion 3 of the steering shaft through the sliding fastening portion 26 of the outer joint 25.

Then, the joint 30 located at the lower end is coupled to the connecting shaft 3 of the steering gear by swing recognition through the swing recognition fastening portion 36 of the outer yoke 35. That is, as shown in FIG. 6A, in the state in which the bolt 40 is separated, the intermediate steering shaft 10 fixed at the upper end by the joint 20 and the joint 30 at the lower end thereof are in the same direction as the arrow direction. It will rotate in a right direction. At this time, the fastening portion 36 of the outer yoke 35 is coupled to the connecting shaft portion 3 of the steering gear by swing recognition, as shown in Figure 6b, the bolt 40 in this state To be coupled to the fastening piece 38 of the fastening part 36.

Thereafter, when the bolts 40 coupled to the fastening pieces 28 and 38 of the sliding fastening part 26 and the swing recognition fastening part 36 are tightened, each of the fastening parts 26 and 36 has a steering shaft ( 115) and the steering gear 117 can be maintained firmly coupled.

As described above, the present invention, the joint coupled to both ends of the intermediate steering shaft, the joint formed on the yoke of one side open to have the same diameter in the axial perpendicular direction, steering gear or steering shaft when swinging and swinging It can be combined in such a way that the bolting work and the assembly of the joint are convenient, and the overall structure is simplified by eliminating the slip joint structure, thereby improving the manufacturability and reducing the production cost. have.

While the invention has been shown and described with respect to particular embodiments, those skilled in the art will recognize that various modifications and changes can be made without departing from the spirit and scope of the invention as indicated by the appended claims. Anyone can easily know.

Claims (4)

In the intermediate steering shaft assembly is coupled to both ends of the intermediate steering shaft, the joint shaft for coupling the steering shaft and the steering gear and the deflection state, respectively, The outer end yoke 35 of the joint 30 is opened to have the same width in the axially perpendicular direction, and a fastening portion 36 is formed to be coupled to the connecting shaft portion 3 in the axial perpendicular direction, and the fastening portion 36 Intermediate steering shaft assembly, characterized in that the bolt (40) for supporting one side of the connecting shaft portion (3) is closed by closing the opening (37) of. According to claim 1, The fastening portion 36 has an intermediate steering shaft assembly, characterized in that the curved structure corresponding to the connecting shaft portion (3) having a cross-sectional structure of the double-D type. According to claim 1, The bolt 40 is an intermediate steering shaft assembly, characterized in that the fastening in the upper and lower sides of the fastening portion (36) in double. The method of claim 3, wherein Intermediate steering shaft assembly, characterized in that one of the bolts (40) is formed in a tapered structure.