JPS5815257Y2 - tilt steering - Google Patents

Description

[Detailed explanation of the invention] The invention is based on a steering column installed in a car.
The present invention relates to a so-called tilt steering whose mounting angle to a vehicle body can be adjusted, and particularly relates to an improvement of a tilt adjustment device thereof.

This type of tilt steering has conventionally been constructed as shown in FIGS. 1 and 2.

That is, a steering column 2 that pivotally supports a steering shaft (not shown) to which a steering wheel 1 is fixed is supported by a pedal bracket 4 at its end far from a steering gear box (not shown) by a U-shaped bracket 3. The amount of tilt can be changed using the configuration described below.

The U-shaped bracket 3 has long holes 3a corresponding to both ends □.
.

3b, and a spacer 5 to which the steering column 2 is fixed is slidably inserted between these two legs.

The spacer 5 has alignment holes 5a and 5b formed on both sides that slide into contact with both legs of the bracket 3. Adjustment bolts 6 are inserted into these holes and the elongated holes 3a and 3b, and the threaded ends of the adjustment bolts 6 are inserted. The female threaded part 7a of the adjustment nut 7
Screw together.

Further, a serration portion γb is formed on the adjustment nut T, and the serration portion 8a of the tilt lever 8 is fitted into the serration portion γb, so that rotation of the tilt lever 8 can be transmitted to the adjustment nut 7.

Further, the tilt lever 8 is prevented from being removed via a washer 10 by a bolt 9 screwed into the female threaded portion γC of the adjustment nut 1, thereby configuring a tilt adjustment device.

In the conventional configuration described above, when the driver 11 wants to tilt the steering column 2 to a desired position, he first rotates the steering lever 8 in the direction B in FIG. Release the tightening of bracket 3.

Thus, the driver 11 can hold the steering wheel 1 and rotate the steering column 2 to a desired position.

At this time, the adjustment bolt 6 is inserted into the elongated hole 3a through the spacer 5 that is integrated with the steering column 2.

3b, and the adjustment bolt 6 is inserted into the long holes 3a, 3.
By colliding with both ends of b, the amount of tilt of the steering column 2 is regulated.

After adjusting the tilt of steering column 2, driver 1
1 rotates the tilt lever 8 in the direction A in FIG.
can fasten the spacer 5 and fix the steering column 2 in the adjusted position.

However, in the conventional tilt steering system having such a configuration, when the tilt lever 8 is fixed, it and the driver 11
The gap between the seat 1 and the leg 11a becomes extremely small.
Depending on conditions such as the slide position of the driver 11 and the physique of the driver 11, the leg portion 11a of the driver may come into contact with the tilt lever 8, which may be inconvenient.

In particular, during a car collision, the driver's legs 1
1a may collide violently with the tart lever 8, causing serious injury to the driver, and even during normal driving, the driver always feels uneasy about the protrusion.

As a solution, it is possible to place the tilt adjustment device in a position far from the driver, in other words, in front of the car, so that the tilt lever 8 is farther away from the driver. The driver cannot do this while sitting in the driver's seat, making the operation very cumbersome. Therefore, it is better to install the tilt adjustment device as close to the driver as possible.

From this point of view, in order to solve the above-mentioned problems of conventional tilt steering without moving the tilt adjustment device far from the driver, the present invention is designed so that the tilt bar can be brought to a position where it does not get in the way after tilt adjustment. west,
The present invention aims to provide a tilt steering system that is both safe and aesthetically pleasing.

The present invention will be described in detail below with reference to the illustrated embodiments.

3 to 1 show an example of the configuration of the present invention. In the present invention, as shown in FIGS. 4 and 5, a nut 7 as a tilt lever engaging portion is provided on the end face of the nut 7 far from the bracket 3. A nut-like projection 7d (hexagonal cross-section in the illustrated example but square cross-section may also be used) is integrally provided, and this nut-like projection 1
A first hole 8b is formed in the tilt lever 8 as an adjustment nut engagement hole, and has a size and shape corresponding to the cross-sectional shape of the nut-shaped projection 1d.

The tell lever 8 is further formed with a circular second hole 8c that is continuous with the first hole 8b and has a larger maximum width than the first hole 8b as a non-engaging portion.

Then, in order to prevent the tilt lever 8 attached to the adjustment nut 7 from being removed by fitting the hole 8a or 8c into the Nand-shaped protrusion 7d, use the bolt 9 screwed into the female threaded portion 1c of the adjustment nut 7 to adjust the lever 8. Between the washer 10 fixed to the nut 7 and the torque lever 8, there is a
Set the gap as shown in 2, and tilt lever 8
can be appropriately moved relative to the hair just nut 7 in its length direction.

In the tilt steering of the present invention configured as described above,
When tilting the steering ram 2 to a position desired by the driver 11, first place the tilt lever 8 in the relative position shown in FIGS. The engagement between the projection 7d and the first hole 8b enables transmission to the adjustment nut 1.

In this state, the driver 11 can tilt the steering column 2 to a desired position by rotating the steering lever 8 in the direction B in FIG. 3 and loosening the adjustment nut 7.

After this tilt adjustment, the driver 11 is moved to the tilt lever 8.
The steering column 2 can be tilted to a desired position by rotating the adjustment nut 7 in the direction B in FIG. 3 to loosen the adjustment nut 7.

After this tilt adjustment, the driver 11 is moved to the tilt lever 8.
The steering column 2 can be fixed at the adjusted position by rotating the adjustment nut 7 in the direction A in FIG. 3 and tightening the adjustment nut 7.

Thereafter, the driver 11 pushes the telescopic lever 8 in the direction D in FIG. 3, and displaces it so that the second hole 8c is located on the nut-shaped protrusion Td instead of the first hole 8b.

Thereby, the tilt lever 8 can be rotated independently of the adjustment nut 7 because the second hole 8c has a sufficient size so as not to engage with the nut-shaped projection 7d.

Therefore, after adjusting the tilt, the driver 11 rotates the tilt lever 8 further in the direction A in FIG.
It can be brought to a position where it will not interfere with the operation, for example, the position shown in FIG.

In the present invention, a holder 13 for holding the tilt lever 8 in this position is provided, for example, on the steering column 2, as shown in FIGS. 3 and 6.

Note that the holder 13 is not limited to the steering column 2, and may be installed anywhere, such as the pedal bracket 4 or the steering column cover.

In the present invention, this holder 13 is used as a support piece 1 fixed to the steering column 2, as shown in FIG. 7, for example.
A holding part 13b having a U-shaped cross section is integrally formed or fixed on the roadside of 3a, and the tilt lever 8 can be elastically held within this holding part 13b.

Note that the present invention is not limited to the above-mentioned example, and various modifications can be made.
The position of c can be reversed, or the engagement and disengagement of the tilt lever 8 with the adjustment nut 7 can be achieved by the configuration shown in FIG.

In the example shown in Figure 8, the adjustment nut 7 and tilt lever 8
As with the conventional structure described above with reference to FIGS. 1 and 2, the engagement is performed by fitting the serrations 7a (tel lever engaging part) and 8a (adjustment nut engaging part) provided respectively. In this example, the adjustment nut 7 is provided with a small diameter portion γe (having a smaller diameter than the serration portion 1b) of the non-engaging portion 17 adjacent to the serration portion 7b.

The positions of the serration portion 7b and the small diameter portion γe may be reversed from those shown in the drawing.

The length of the small diameter portion 7e is set to be greater than the width of the serration portion 8a of the tilt lever 8 so that the tilt lever 8 can be moved in the direction of its rotation axis, and the tilt lever 8 is prevented from being pulled out using a washer as in the above example. Do this with 10.

In this example of such a configuration, by displacing the tilt lever 8 to the right in the figure as shown in the figure and engaging the serration portion 8a of the tilt lever 8 with the serration portion 7b of the adjustment nut 7, the rotation operation of the tilt lever 8 can be performed by moving the tilt lever 8 to the right in the figure. 7, and the tilt of the steering column 2 can be adjusted by the same operation as described above.

After the tilt adjustment, the tilt lever 8 is moved to the left in the figure to bring the serration portion 8a above the small diameter portion Te of the adjustment nut 7.

As a result, the tilt lever 8 can be rotated independently of the adjustment nut 1, and the driver can rotate the tilt lever 8 to any position that does not cause interference, for example, as shown in FIGS. 3, 6, and 7. It can be held in this position with a holder similar to that shown at 13 in FIG.

In this way, the tilt steering system of the present invention has a structure that allows the tilt lever 8 to be held in a position where it does not interfere with the driver when it is not needed. In particular, it is possible to avoid the inconvenience of the driver's leg colliding violently with the tilt lever 8 in the event of a car collision, resulting in serious injury. Furthermore, it is aesthetically superior. sacrificing sex, adjusting nut 7
It has the advantage of being able to achieve this without adding new parts or making the structure complex and large.

[Brief explanation of the drawing]

Fig. 1 is a side view of the conventional tilt steering, Fig. 2 is a sectional view of the main parts thereof, Fig. 3 is a side view of the tilt steering of the present invention, and Fig. 4 is the same as Fig. 2 showing the main parts. FIG. 5 is an exploded perspective view of essential parts of the tilt steering of the present invention, FIG. 6 is an explanatory diagram of the operation of the tilt steering of the present invention shown in FIGS. 3 to 5, and FIG.
-C sectional view, FIG. 8 is a sectional view similar to FIG. 4 showing another example of the present invention. 1... Steering wheel, 2...
Steering column, 3...U-shaped bracket, 3a. 3b... Length: fL4... Pedal bracket, 5... Spacer, 6... Adjustment bolt, γ... Adjustment nut, 7a,
7c... Female thread part, 7b... Serration part, 7d... Nut-shaped projection, γe... Small diameter part,
8...Tilt lever 8a... Serration section, 8b... First hole, 8c...
・Second hole, 9... Fixing bolt, 10...
...Washer, 11...Driver 13...
...Tilt lever holder.

Claims (1)

[Scope of utility model registration request] 1. A tilt steering system in which the mounting angle of an automobile steering column to a vehicle body can be adjusted or fixed at this adjusted mounting angle by rotating a tilt lever and loosening or tightening an adjustment nut engaged with the tilt lever, The tilt lever is attached to be movable relative to the adjustment nut in the longitudinal direction or rotation axis direction from a position where it is engaged with the adjustment nut, and the tilt lever releases the engagement with the adjustment nut at the relative movement position. A non-engaging portion is formed on the tilt lever or the adjustment nut so that the tilt lever can be rotated independently to a position where no interference occurs, and a holder is provided to restrain the tilt lever to the position where no interference occurs. A tilt steering 2, wherein the non-engaging portion is a hole that is continuous with an adjusting nut engaging hole of the tilt lever and has a larger diameter than the adjusting nut engaging hole provided on the tilt lever. Tilt steering as described in item 1. 3. Utility model registration claim 1, wherein the non-engaging portion is a small diameter portion provided on the adjustment nut adjacent to the tilt lever engaging portion and having a smaller diameter than the tilt lever engaging portion. Telt steering of the words and organs.