KR19990028497U - Intum shaft of car steering - Google Patents

Abstract

The present invention relates to an intum shaft of a vehicle steering apparatus, which is hollow and has one end of an inner surface portion formed with a female spiral portion 12b, and the other end has a serration 12c formed in a longitudinal direction and a female spiral portion. A yoke 12a having a universal joint portion 12d is formed at a side end of the tube 12b, and a tube 12 formed between the female spiral portion 12b and the serration 12c is formed as a smooth surface 12e. And, after the male spiral portion 13a, the male rod portion 13a is formed at the distal end portion of the largest diameter as a round bar whose diameter gradually decreases from one end to the other end, which can be fastened to the female spiral portion 12b. On the side is formed a serration (13b) that can be coupled to the serration (12c) and at the end of the smallest diameter consists of a shaft (13c) formed with a serration (13c) or a universal joint, so regardless of the model Can In addition, the assembly is also improved, it is effective for the driver's safety by absorbing the impact energy in the event of a forward collision.

Description

Intum shaft of car steering

The present invention relates to an intum shaft of a car steering apparatus, more specifically

By dividing the length into two parts, it is possible to use it in common for different types of vehicles, as well as to improve the assemblability, and to absorb the impact energy in the event of a front collision. .

As is well known, the steering device is a device for changing the driving direction of the vehicle as desired by the driver.

In other words, the steering mechanism of a vehicle is composed of three parts: an operation mechanism, a gear mechanism, and a link mechanism. The operation mechanism transmits the operating force to the gear mechanism by the driver's direct steering operation. And a column, etc., the gear mechanism increases the operating force by decelerating the rotation of the steering shaft, and at the same time, changes the direction of movement of the control mechanism and transmits it to the link mechanism, and the link mechanism transmits the movement of the gear mechanism to the front wheels. In addition, it is the part to keep the relation position of right and left wheels correctly.

Meanwhile, referring to the accompanying drawings, a general steering apparatus is illustrated with reference to FIG. 1, and a steering column 40 fixed to a vehicle body and an upper end portion thereof are inserted into the steering column 40 while the steering wheel 50 of the driver's seat is provided. Steering shaft 30 which is attached to the rotating shaft in accordance with the rotation operation of the steering wheel 50, the intertube shaft 20, the upper end is universally coupled to the steering shaft 30, and the intertube shaft 20 Inverted shaft (10) which is universal joint to the), the steering gear 60 is serrated coupled to the intum shaft 10, and is coupled to the steering gear 60 serves to change the direction of the wheel (80) It consists of a tie rod 70.

However, among the components, the intum shaft 10 is coupled between the intertube shaft 20 and the steering gear 60 and transmits the operating force of the steering wheel 50 to the steering gear 60, steering. Since it forms a predetermined angle with the shaft 30, the intershaft 20 is combined with a universal joint to improve the assemblability, and gives a certain degree of freedom in the longitudinal direction to the arrangement of the shaft, and at the same time the mounting error In order to reduce the steering gear 60 is to be coupled to the serrations.

That is, as shown in Figure 2 of the accompanying drawings, the general intum shaft 10 is composed of a yoke (yoke) 12 of one end portion is provided with a universal joint portion 11, the other end portion in the longitudinal direction It is made of a serration 13 in which gears are machined on the surface.

However, in general, since the length of the steering shaft to the shaft of the steering gear is different for each vehicle type, the dimensions of the intum shaft also have to be used according to the vehicle model, so there is a problem in that the intum shaft cannot be used.

The present invention has been devised to solve the problems caused by the intum shaft of the conventional vehicle steering apparatus as described above, and can be used in common for different types of vehicles by being divided into two parts so that the length can be adjusted. In addition, the object of the present invention is to provide an intum shaft of a vehicle steering apparatus that absorbs impact energy in a front collision accident and thus becomes effective for driver protection.

The technical configuration of the present invention for achieving the above object is made of a tube and a shaft is divided into an intum shaft is divided into two, the inner side of the tube is hollow (hollow) the inner thread portion is processed in the width direction in the width direction In addition to the female spiral portion, the other end is formed with a serration machined in the longitudinal direction, and the yoke is formed on both ends of the female spiral portion to form a universal joint for coupling to the yoke of the intertube shaft and the universal joint. On the other hand, the shaft is a round bar that gradually decreases in diameter from one end to the other end, the male end of the maximum diameter is formed in the male spiral portion that can be fastened to the female spiral portion while the serration of the tube on the rear side of the male spiral portion In addition to the longitudinal serrations with threaded threads that can be coupled to The distal end of the small diameter is characterized in that the yoke to be a serration or a universal joint processing a thread to be coupled to the steering gear serration formed in the longitudinal direction.

1 is a perspective view showing a steering apparatus of a general vehicle,

Figure 2 is a front view showing the intum shaft according to the prior art,

3 is a front view of a partial cross-sectional view showing an embodiment of the intum shaft according to the present invention,

4 is a perspective view showing a shaft of the intum shaft according to one embodiment of the present invention;

5 is an exploded cross-sectional view of an intum shaft according to an embodiment of the present invention;

6 is a front view of a partial cross-sectional view showing another embodiment of the intum shaft according to the present invention.

Explanation of symbols on the main parts of the drawings

10: intum shaft 12: tube

12a, 12a ': York 12b: female thread

12c: Serration 12d, 12d ': Universal joint part

12e: smooth surface 13: shaft

13a: male thread portion 13b, 13c: serration

Hereinafter, described in detail with reference to the accompanying drawings a preferred embodiment of the present invention.

Example 1

Figure 3 is a front view of a partial cross-sectional view showing an embodiment of the intum shaft according to the present invention, Figure 4 is a perspective view showing a shaft of the intum shaft according to a temporary embodiment of the present invention, Figure 5 is An exploded cross-sectional view of an intum shaft according to an embodiment.

As shown in FIG. 3 or FIG. 5, the intum shaft 10 according to the present invention is made to be divided into a tube 12 and a shaft 13, and the tube 12 is hollow inside. One end of the inner surface portion is formed with a female threaded portion 12b in which a female thread is processed in the width direction, and the other end is formed with a serration 12c having a threaded process in the longitudinal direction, and the female threaded portion 12b and three ends are formed. Between the projections 12c is a flat smooth surface 12e, and a yoke 12a is formed at both ends of the female threaded portion, and a universal joint part is coupled to the yoke 12a by an intertube shaft (not shown) and a universal joint. 12d is formed, while the shaft 13 is a round bar whose diameter gradually decreases from one end to the other as shown in FIG. 4, and is fastened to the female helix 12b at the distal end of the largest diameter. The male thread width As the male threaded portion 13a is formed into a spiral, a serration 13b having a threaded line which can be coupled to the serration 12c of the tube 12 is formed on the rear side of the male threaded portion 13a. It is made in the longitudinal direction in a range not longer than the smooth surface 12e or the serration 12c, and the male thread type serration 13c for the serration coupling to a steering gear (not shown) at the end of the smallest diameter. ) Is formed.

Example 2

As shown in FIG. 6, the intum shaft 10 according to the present embodiment is divided into two tubes 12 and a shaft 13 as in the first embodiment, and the tube 12 and the tube are divided into two. Shaft 13 coupled to the (12) is made of the same structure as the first embodiment, but the yoke 12a 'is formed with a universal joint (12d') is formed so that the distal end is coupled to the steering gear (not shown) universal joint It is characterized by.

Operation of the intum shaft of the vehicle steering apparatus according to the present invention configured as described above is as follows.

First, the shaft 13 is inserted from the end where the female threaded portion 12b of the tube 12 is formed so as to be transported in a state where the male threaded portion 13a of the shaft 13 is fastened to the female threaded portion 12b. The mounting portion of the tube 12 and the shaft 13 may be mounted to the spiral portion (13) to the portion where the serration 12c of the tube 12 is formed while the shaft 13 is inserted into the tube 12. 12b and 13a are continuously rotated to release the male threaded portion 13a from the female threaded portion 12b so that the fastened state of these spiraled portions 12b and 13a is released, and then the three shafts 13 Allow the ration 13b to be fastened to the serration 12c of the tube 12, but adjust the length of the serrations 12c and 13b according to the vehicle model to adjust the length of the serration 12c and 13b. The steering shaft 30 and the steering column 40 which are indirectly connected to the intum shaft 10 are fixed to the vehicle body. Since it is possible to keep constantly the fastening length of the serration (12c, 13b) in the first place.

On the other hand, since one end of the shaft 13 mounted on the steering gear is composed of the serration 13b 'or the universal joint part 12d', the mounting part of the steering gear is also required to be formed as the serration or the universal joint part. .

As described above, one end of the tube 12 or one end of the tubing 12 and one end of the shaft 13 are connected to the steering gear and the intertube in a state in which the intum shaft is divided into the tube 12 and the shaft 13. As it is coupled to the shaft with a universal joint, the joining is easier than serrations or splines.

In addition, when the engagement portion of the serration 12c and 13b of the vehicle is pushed out, the frictional force and the universal joint portions 12d and 12d 'are also broken, so that the impact energy is absorbed.

As described above, the intum shaft of the automobile steering apparatus according to the present invention is divided into two parts so that the length can be adjusted, and there is an advantage that it can be commonly used in various models, as well as the assemblability of the steering gear and the intertube shaft is improved. In addition, there is an advantage that it becomes effective to the driver's safety by being structured to absorb the impact energy in the event of a forward collision.

Claims (3)

The hollow portion is hollow, so that one end of the female threaded portion 12b is formed, while the other end has a serration 12c formed in the longitudinal direction, and a universal joint portion 12d is formed at the side end of the female threaded portion 12b. The provided yoke 12a is formed, and between the female spiral portion 12b and the serration 12c, the tube 12 is formed of a smooth surface 12e, and the diameter gradually increases from one end to the other end. As the reduced bar is formed in the distal end of the maximum diameter of the male spiral portion (13b) that can be fastened to the female spiral portion (12b) is formed in the rear side of the male spiral portion (13a) three that can be coupled to the serration 12c An intum shaft of an automobile steering device, comprising a shaft 13 having a formation 13b. 2. The intum shaft of an automobile steering apparatus according to claim 1, wherein a distal end of the minimum diameter of the shaft (13) is formed of a serration (13c) for serration coupling to a steering gear. 2. The intum shaft of a vehicle steering apparatus according to claim 1, wherein a yoke (12a ') having a universal joint portion (12d') is formed such that a distal end of the minimum diameter of the shaft (13) is universally joined to the steering gear.