JPS6353170A - Tilt steering column device - Google Patents

Abstract

PURPOSE:To clearly feel the boundary between a tilt range in a driving posture and a hop-up tilt range which facilitates getting on and off by providing large and small circular arc faces and forming a step on the end part back face of a tilt bracket. CONSTITUTION:A large circular arc face 5a and a small circular arc face 5b with a tilt rotation center 7a as a center are provided and a step 5c is formed, on the lower end back face of a tile bracket 5. The small arc face 5b is mutually related to a driving time tilt range angle alpha while the large arc 5a is mutually related to a hop-up tilt range angle beta. When a hand wheel is tilted up, the back face of the tilt bracket 5 which is integrally formed with the hand wheel and the end of a ratchet plate 13 are relatively displaced causing the end of the ratchet plate 13 to ride over the step 5c on the back face of the bracket 5 and, at this time, a shock is felt on the hand wheel, enabling a tilt-up condition to be recognized.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a tilt steering column device that can be moved to a position that facilitates getting on and off the vehicle and a position that provides the optimum driving position for the driver.

(Prior art) In the conventional tilt steering column device, a long hole is made in either the fixed bracket or the tilt bracket, and the lever shaft is inserted through the hole, and the tilt range is confirmed by the lever shaft coming into contact with both ends of the long hole in the bracket. Was.

(The problem to be solved by the invention) In the above-mentioned conventional technology, the opening of the elongated hole in the bracket forms the tilt range. It is not possible to distinguish between the tilt position and the tilt position to obtain the position. Therefore, when the tilt angle of the hop-up is set large, the tilt bracket is fixedly supported by operating the lever while the angle of the shaft axis with respect to the horizontal becomes large. That is, there is a problem in that the steering wheel angle differs from the set angle, resulting in an unnatural driving position and danger to the driver.

(Means for Solving the Problems) The present invention is intended to solve the above problems.A tilt bracket with a handle wheel attached to a fixed bracket is rotatably pivoted, and a lever is operated. In a tilt steering column device in which the tilt bracket is tightened or freed from the fixed bracket,
A large and small arcuate surface is provided on the rear surface of the end of the tilt bracket to form a step, and a ratchet plate is pressed against the large and small arcuate surface,
This is characterized in that a part of the stop integrated with the lever is displaced to a position where it does not engage the ratchet plate when tilting up, making it impossible to fix the handle wheel.

(Example) Hereinafter, a detailed explanation will be given based on the illustrated example. 1
A steering wheel (not shown) is fixed to the upper end of the steering shaft. Steering shaft 1
is rotatably supported by a pipe 2 and connected to a gear box (not shown) via a universal joint 3 and an intermediate 1III4. The pipe 2 is integrated with the tilt bracket 5 by welding or the like, and is rotatably supported by the fixed bracket 6 via the pin 7 of the tilt rotation center 78. The fixing bracket 6 is fixed to the vehicle body (not shown) with bolts or the like.

8 is a lever shaft that passes through the round hole 6a of the fixed bracket 6, the elongated hole 5d of the tilt bracket 5, the washer 8', and the spacer 9, and its head is fixed to the fixed bracket 6 by welding or the like in a non-rotatable manner and is connected to the nut 10. It is a screw fit. Natsu 1
0 has a lever 11 and a stopper plate 12 integrated by welding or the like, and the lever 11 is rotated in the screw tightening direction (Loc).
k direction), the fixed bracket 6 and tilt bracket 5 are tightened and fixed, and the handle wheel (not shown) is tilt-locked. Further, by operating the lever 11 in the screw loosening direction (lnLock direction), the fastening of the fixed bracket 6 and the tilt bracket 5 is released, and the handle wheel becomes tilt-free. The long hole 5d of the tilt bracket 5 is correlated to the full tilt angle O. A tilt rotation center 78 is located on the back of the lower end of the tilt bracket 5.
A large circular arc surface 5a and a small circular arc surface 5b are set at the step 5.
It forms c. The small arc surface 5b is the tilt range angle α during operation.

The large arc surfaces 5a are each correlated with the hop-up tilt range angle β.

A ratchet plate 13 is rotatably supported by the fixed bracket 6 via a pin 14, and is pressed against the rear surface of the lower end of the tilt bracket 5 by a coil spring 15.

Next, the effect will be explained.

When the lever 11 is rotated in the UnLock direction to release the screw tightening, the handle wheel (not shown) can be tilted in the x-x' force direction. When the handle wheel is tilted up in the X direction, the contact point 13a between the rear surface of the tilt bracket 5, which is integrated with the handle wheel, and the tip of the ratchet plate 13 also moves in correlation.

When the contact point 13a at the tip of the ratchet plate 13 rides on the rear step 5c of the tilt bracket 5, a shock is felt on the handle wheel.

This shock allows the driver to know the boundary between the tilt range angle α and the hop-up tilt range angle β that makes getting on and off the vehicle easier.

Further, when the handle wheel is tilted up in the X direction, the contact point 13a at the tip of the ratchet plate 13 rides on the large arc surface 5a of the tilt bracket 5. That is, when the handle wheel reaches the range of the hop-up angle β, the ratchet plate 13 comes to the position shown in FIG. In this state, when the lever 11 is rotated in the tightening direction (Lock direction), the stopper plate 12 is integrated with the lever 11.
The bent stopper part 12a contacts the ratchet plate 13, and the lever 11 cannot rotate any further.

That is, since the steering wheel is not tilted and fixed in the X direction, the driver cannot drive while holding the steering wheel.

Next, when the handle wheel is tilted down from the hop-up tilt range angle β to the tilt range angle α, as shown in FIG.
A gap S is created between the stopper portion 12a of the stopper plate 12 and the stopper portion 12a of the stopper plate 12. Therefore, the lever 11 integrated with the stop part 12a can be rotated in the tightening direction (lock direction), and the fixed bracket 6 and the tilt bracket 5 are fixedly held. In other words, the handle wheel can be tilted and fixed.

Note that the same effect can be obtained by attaching a part of the stopper directly to the lever 11.

(Effects) According to the present invention, there is provided a tilt steering column device in which a tilt bracket with a handle wheel attached to a fixed bracket is rotatably pivoted, and the tilt bracket is tightened or released from the fixed bracket by operating a lever. In this case, large and small arcuate surfaces are provided on the rear surface of the end of the tilt bracket to form a step, and the ratchet plate is pressed against the large and small arcuate surfaces, so that a part of the stop that is integrated with the lever is not locked to the ratchet plate when tilting up. Since the handle wheel cannot be fixed by being displaced to a certain position, the boundary between the tilt range, which is arbitrarily positioned according to the normal driving posture, and the hop-up tilt range, which facilitates getting on and off, can be clearly felt. Furthermore, since the lever cannot be operated in the hop-up tilt range and the handle wheel cannot be fixed in the tilt direction, it is possible to prevent driving in the hop-up tilt range.

[Brief explanation of the drawing]

Figure 1 is a front view of the entire embodiment of the present invention, Figure 2 is a front view of the main parts of Figure 1, Figure 3 is a bottom view of Figure 2, and Figure 4 is an enlarged view of the main parts during normal operation IJnLock. The front view and FIG. 5 are enlarged front views of main parts when getting on and off the vehicle is facilitated. 1...Steering shaft 5...Tilt bracket 5a...Large arc surface 5b...Small arc surface 5c...
Step 5d...Long hole 6...Fixing bracket 7...Pin 8...Lever shaft 11...Lever 12...Stopper plate 12a...Stopper part 13...Ratchet plate 13a...・Contact point 0...Full tilt angle α...Child range angle during operation

Claims (1)

[Claims] In a tilt steering column device, a tilt bracket with a handle wheel attached to a fixed bracket is rotatably pivoted, and the tilt bracket can be tightened or released from the fixed bracket by operating a lever. A large and small circular arc surface is provided to form a step, and a ratchet plate is pressed against the large and small circular arc surface, and the stopper part integrated with the lever is displaced to a position where it does not engage with the ratchet plate when tilting up, making it impossible to fix the handle wheel. Tilt steering column device.