JPH0367779A - Tilt steering device - Google Patents

Abstract

PURPOSE:To ensure a sure retention at an operation position and at the same time conduct return to the operation position without requiring readjustment by providing a fine adjustment tilt operation lever, in a tilt steering device provided with a function of a fine adjustment of upward and downward positions and a function of an evacuation in the upward direction, of a steering wheel. CONSTITUTION:A tilt bracket 5 which has an upper column 7 fixed thereto, is swingably supported by means of a pin 3 at the rear portion of a U-shaped cross sectional fixed bracket 1, having a lower column 2 fixed thereto; in the lower column 2 a steering shaft is rotatably inserted. A fine adjustment tilt operation lever 18 is pivotably 19 supported at the lower part of the fixed bracket 1, and a pin 28 provided at its tip part is engaged with a long hole 25 at lower part of a fine adjustment stopper plate 22 which is pivotably 23 supported at the fixed bracket 1 and has teeth 22a at its rear edge. Also, a fine adjustment stopper member 31 is turnably fitted at the periphery of the pin 3 on the left side of the fixed bracket 1, and the meshing of teeth 22a with the teeth 31a of the stopper member 31 is arranged to be engaged/disengaged with the operation of a tilt operation lever 34 for an evacuation action.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application This invention relates to a tilt steering device for automobiles, etc., and more specifically, to a steering device having a function of finely adjusting the vertical position of a steering wheel and retracting the steering wheel to an upper retracting position. Regarding.

In this specification, the left side of FIG. 1 and FIG.
The right side is the back, the top and bottom of FIG. 1 are the top and bottom, the bottom of FIG. 2 is the left, and the top is the right.

Prior Art and Problems with the Invention In this type of tilt steering device, a tilt bracket is rotatably attached to a fixed bracket fixed to a vehicle body, and fine adjustment of the position of the steering wheel and retracting operation are performed by operating a control lever or the like. What you do is known.

However, with such conventional devices, it is not possible to return the steering wheel to the original adjustment position after performing the retracting operation, and fine adjustment is required again.

A tilt steering device that solves this problem has been proposed in Japanese Patent Laid-Open No. 155156/1983.

However, in the case of this device, the configuration for returning to the original adjustment position after the evacuation operation is complicated, and furthermore, when performing the evacuation operation, it is necessary to move the steering wheel upward by hand while operating the control lever. The operation is complicated.

An object of the present invention is to provide a tilt steering device that solves the above problems.

Means for Solving the Problems A tilt steering device according to the present invention includes: a fixed bracket fixed to a vehicle body and supporting a lower steering shaft via a lower column; and a tilt bracket that supports an upper steering shaft connected to the lower steering shaft by a universal joint via the upper column; and a tilt bracket provided between the fixed bracket and the tilt bracket and biased in a direction to rotate the tilt bracket upward. a fine-adjustment tilt operation lever rotatably attached to the fixed bracket so as to be able to switch between the locked position and the unlocked position; and a fine-adjustment tilt operation lever rotatably attached to the fixed bracket and having teeth. an adjustment stopper plate; a fine adjustment stopper member that is rotatable about a tilt center and has teeth that mesh with teeth of the fine adjustment stopper plate; and a fine adjustment stopper member that can be switched between an operating position and a retracted position A tilt operation lever for retraction operation is rotatably attached to the stopper member and has a long hole formed in an arc centered on the tilt center when switched to the retraction position, and a tilt operation lever is fixed to the tilt bracket. and an evacuation operation stopper pin that is fitted into a long hole of the evacuation operation tilt operation lever so as to be movable in the length direction of the evacuation operation tilt operation lever. An elongated hole is formed in one of the two, and the other is fitted so as to be slidable in the elongated hole,
And when the fine adjustment tilt operation lever is in the lock position, the fine adjustment stopper plate is rotated toward the fine adjustment stopper member so that the teeth of both sides are engaged, and the fine adjustment tilt operation lever is in the unlocked position. The fine adjustment stopper plate is provided with a pin that rotates the fine adjustment stopper plate away from the fine adjustment stopper member to disengage the teeth of both at a certain time, and is connected to the elongated hole in the tilt operation lever for retracting operation. When the lever is in the operating position, the lever engages with the retracting operation stopper pin so as to hold the tilt bracket in the operating position against the spring, thereby holding the stopper pin in the operating position, and the retracting operation tilt operating lever is retracted. An engagement portion is formed to release the pin so that the tilt bracket can be pivoted upward to the retracted position by the spring when the tilt bracket is switched to the position.

Operation When the tilt operation lever for evacuation operation is in the operation position and the evacuation operation stopper pin is in the operation position where it is engaged with the engagement part formed in series with the elongated hole of the tilt operation lever for evacuation operation, When the adjustment tilt operation lever is rotated to the lock position, the fine adjustment stopper plate is rotated by the pin toward the fine adjustment stopper member, and the teeth of both sides are strongly engaged, so that the stopper member is attached to the fixed bracket. is firmly fixed. Then, the tilt bracket is fixed to the fixed bracket via the retraction operation tilt operation lever and the retraction operation stopper pin.

The tilt bracket and steering wheel are thus held in the driving position.

When the tilt operation lever for evacuation operation is switched to the evacuation position,
The engagement between the retracting operation stopper pin and the engaging portion is released, and the tilt bracket and the steering wheel are rotated to the retracted position by the spring. At this time, the retraction operation stopper pin fixedly provided on the tilt bracket moves within the elongated hole. Then, by rotating the steering wheel and tilt bracket to the operating position and returning the evacuation operation tilt operation lever to the operating position,
The retraction operation stopper pin moves in the elongated hole in the opposite direction to the above, engages with the engaging portion, and returns to the operating position. The tilt bracket and steering wheel are thus held in the driving position. During such retreat and return operations, the teeth of the fine adjustment stopper plate and the fine adjustment stopper member are engaged with each other, so the fine adjustment stopper member does not rotate around the tilt center. When the tilt bracket is returned to the operating position, the steering wheel will always return to its original position.

When the tilt operation lever for fine adjustment is switched to the unlock position while the tilt operation lever for evacuation operation and the tilt bracket are held in the operating position and the evacuation operation stopper pin is held in the operation position, the fine adjustment stopper plate is moved by the pin. is rotated away from the fine adjustment stopper member, and the meshing of both teeth is released.

At this unlocked position, the tilt bracket is rotated relative to the fixed bracket, and the vertical position of the steering wheel on the tilt bracket side is finely adjusted. At this position, by rotating the fine adjustment tilt operation lever to the lock position, the fine adjustment stopper plate is rotated by the pin toward the fine adjustment stopper member, and the teeth of both sides are engaged, as described above. The tilt bracket is fixed to the fixed bracket. The tilt bracket and steering wheel are then held in the operating position.

Embodiment Hereinafter, one embodiment of the present invention will be described with reference to the drawings. The same parts and parts are denoted by the same reference numerals throughout the drawings, and their explanation will be omitted.

The drawing shows an example of a tilt steering device for an automobile.

Example 1 This embodiment is shown in FIGS. 1-8.

1 and 2 show the overall configuration of the tilt steering device, and FIGS. 3 and 4 show the main parts thereof. In these drawings, a fixing bracket (1) is fixed to the body of an automobile (as shown). Fixed bracket (1
) has a substantially U-shape with an open rear end when viewed from above, and a lower column (2) is fixed to its front end. Although not shown, the front end of the lower column (2) is also fixed to an appropriate location on the vehicle body by a fixing member. Also, although not shown, the lower steering shaft is rotatably supported within the lower column (2). Its front end is connected to the steering gear.

At the rear of the fixed bracket (1), attach the tilt bracket (5).
) with two left and right connecting pins (
3) It is rotatably attached by (4). The tilt bracket (5) has a roughly U-shape with an open front when viewed from above, and the left side part (5a) is fixed inside the left side part (la) of the fixed bracket (1), and the right side part (5b) is fixed. They are respectively arranged inside the right side part (lb) of the bracket (1).

The rear end of the tilt bracket (5) has a column (
7) is fixed. A steering shaft (not shown) is rotatably supported within this upper column (7), and a steering wheel is attached to the rear end of the steering shaft. The front end is connected to the rear end of the steering shaft 6 via a universal joint (not shown), and the center of this universal joint is the rotation center of the tilt bracket (5), that is, the center of the connecting pin (3) (4). Although not shown in the drawings, if necessary, the upper column (7) may be provided with a telescope drive unit for extending and retracting the steering shaft.

The left and right connecting pins (3) (4) are formed with hexagonal heads ((a) (4a), circular shaft portions (3b) (4b), and male thread portions (3c) (4c) from the outside. holes (8) formed from the outside of the left and right sides (la) (lb) of the fixed bracket (1) and the left and right sides (5a) of the tilt bracket (5). It passes through the hole <9> formed in (5b).The male threaded part (3c) of the connecting pin (3) (4) (
4c) and the tilt bracket (5> left and right side parts (5a)
) A nut (11) is screwed in from the inside of (5b). The length of the circular shaft portion (4b) of the right side connecting pin (4) is determined by adding the wall thickness of the right side portion (5b) of the tilt bracket (5) to the wall thickness of the right side portion (lb) of the fixed bracket (1). It's a little longer than the original. The left connecting pin (
The circular shaft portion (3b) of the fixing bracket (1) is longer than the circular shaft portion (4b) of the right connecting pin (4). and a spring support member (13) fixed across the rear of the top surface of the tilt bracket (5).
A tension coil spring (
14〉 is installed.

The fixing bracket (1) is attached to the vehicle body via an impact energy absorption mechanism (not shown). Attachment brackets (15) projecting outward are integrally formed at the rear upper ends of the left and right side parts (la) and (1b) of the fixed bracket (1), respectively, and the front and rear ends of these attachment brackets (15) reach the rear ends. A long notch (16) is formed in the mounting bracket (15).The fixing bracket (1) is inserted into the notch (1B) of the mounting bracket (15) from below with a bolt (as shown).
By screwing this bolt into the vehicle body, it is fixed to the vehicle body via an impact energy absorption mechanism (not shown). The impact energy absorption mechanism absorbs impact energy when a driver hits a steering wheel due to inertia during a vehicle collision.

A tilt device is provided between the fixed bracket (1) and the tilt bracket (5) and is capable of finely adjusting the vertical position of the steering wheel and retracting the steering wheel upward.

Left and right sides of fixed bracket (1) (la) (lb)
Connecting pins <3> (4) at the bottom of the rear part of the
An arc-shaped elongated hole (20) is formed that extends back and forth around the center. Left side part (la) of fixed bracket (1)
A lever shaft nut (17) is fixed by welding to the lower part of the front and rear central portions of the outer surface of the lever shaft. A hexagonal head bolt (19) is passed through the front part of the plate-shaped fine adjustment tilt operation lever (first lever) (1g) from the left side, and its head (19a) is welded to the first lever (1g). 18
), and the male threaded portion (19b) is screwed into the screw hole (17a) of the lever shaft nut (17).

The first lever (18) extends rearward, and by rotating it upward, the bolt (19) is attached to the nut (17).
The locking position is switched to the locked position. Further, by rotating the first lever (18) downward, the bolt (19) is loosened and switched to the unlocked position.

On the left side of the left side part (la) of the fixed bracket (1),
The upper end of the fine adjustment stopper plate (22) extending vertically is rotatably attached by a pin (23). Between the lower part of the fine adjustment stopper plate (22) and the front lower end of the left side portion (1a) of the fixed bracket (1), there is a tension coil spring (24) that urges the fine adjustment stopper plate (22) forward. ) is installed. Teeth (22a) are formed on the rear edge of the fine adjustment stopper plate (22). A vertically long backward bent oblong hole (25) is formed in the lower part of the fine adjustment stopper plate (22). A pin (28>) press-fitted and fixed from the left side is passed through the hole (z7) formed in the hole (z7).The pin (28> may be fixed to the first lever <18) by welding.Pin The right end of (28) has a male thread (28).
a) is formed, and a nut (29) for preventing pin removal is screwed into this male threaded portion (28a).

The width of the elongated hole (25) is larger than the diameter of the pin (28〉),
When the pin (28> is in the upper part of the elongated hole (25), it can move slightly in the width direction inside the elongated hole (28>).The width of the lower end of the elongated hole (25>) is It matches the diameter of the pin (28).As shown in Figure 1, the first lever (
18) comes to the above-mentioned lock position, the pin (2
B) moves to the lower end of the elongated hole (25), and at this time is strongly clamped on both sides of the elongated hole (25) to prevent it from wobbling within the elongated hole (25).

Furthermore, when the first lever (18) comes to the above-mentioned unlock position, the pin (28) moves to the upper end of the elongated hole (25>). A shaped extension (30) is formed.The width of the extension (80) gradually becomes narrower toward the tip.Therefore,
If the pin (28) becomes thinner due to wear, the pin (28) will go into the extension part (30) at the above locked position.
The extension part (30) is strongly clamped on both sides, and the elongated hole (25)
It is designed so that it does not rattle inside.

On the left side of the left side part (la) of the fixed bracket (1), around the circular shaft part (3b) of the connecting pin (3),
The rear part of the fine adjustment stopper member (31) is rotatably attached. Teeth (31a) that mesh with the teeth (22a) of the fine adjustment stopper plate (22) are formed on the front edge of the fine adjustment stopper member (31). Then, when the first lever (18) reaches the above-mentioned lock position, the teeth (22a) (31a) of the fine adjustment stopper plate (22) and the fine adjustment stopper member (31) are strongly engaged with each other, and the fine adjustment stopper plate (22) and the fine adjustment stopper member (31) are fixed. Further, the front part of the fine adjustment stopper member (31) is bent to the left so as to be slightly separated from the left side part (1a) of the fixed bracket (1). This separated portion is indicated by (81b). A circular hole (32) is formed in the separated part (31b) of the fine adjustment stopper member (31), and a shaft (33) is press-fitted into this circular hole (32) from the left side and fixed, and its tip is fixed on the right side. The right protruding part (33a) of Tsumugi (33)
) The front part of a plate-shaped tilt operation lever (second lever) (34) for retracting operation is rotatably attached around the holder. The second lever (34) extends rearward, and between its middle part and the micro 3111 stopper member (31>),
A tension coil spring (35) is attached that biases the second lever (34) upward. In the part between the rotation center of the second lever (34) and the tension coil spring (35),
An elongated hole (38) is formed that extends in the front-rear direction and forms an arc centered on the connecting pin (8) (4) when the second lever (34) comes to a retracted position (to be described later). Long hole (3B
) is designed to overlap with the elongated hole (20) of the fixed bracket (1) when the second lever (34> comes to the above-mentioned retracted position.The front end of the elongated hole (8B) is bent downward. A part (engaging part) ((Ba) is formed.

The elongated hole (20
>, and the left and right side parts (5a) (5b) of the tilt bracket (5) in the elongated hole (3B) of the second lever (34).
) and is fixed thereto and extends left and right.
) so that it can move along its length. A cushioning synthetic resin cover (38
) is covered.

11 to 4 show a state in which the steering wheel and tilt bracket (5) are held in the operating position.

At this time, the first lever (18>) is rotated to the upper lock position, and the bolt (19) is tightened to the lever shaft nut (17) as described above. ) is located at the lower end of the elongated hole (25) of the first lever (18), and is held between both side edges of the elongated hole (25>).The rear edge of the elongated hole (25>) is pin (28
> is pushed backwards, and the fine adjustment stopper plate (22
) is rotated rearward around the pin (23), and the fine adjustment stopper plate (22) and the fine adjustment stopper member (
31> teeth (22a) (31a) are strongly interlocked. Therefore, the fine adjustment stopper member (3
1) is prevented from rotating around the connecting pin (3). Further, the second lever (30) is biased by the spring (35) and located in the upper operating position, and the retracting operation stopper pin (37> is connected to the lower bent portion (88a) of the elongated hole (3B).
) into which it engages and is held in the operating position. As a result, the pin (37) is prevented from moving within the elongated hole (20) of the fixed bracket (1), and the tilt bracket (
5) is held in the operating position against the force of the spring (14).

With the steering wheel held in the driving position, when the first lever (18) is rotated downward and brought to the unlock position as shown in Figure 5, the pin (28)
) moves upward in the elongated hole (25) and comes to the top of it,
Spring (24> fine adjustment stopper brake) (22)
is rotated forward, and the fine adjustment stopper plate (22
) and the teeth (22a) of the fine adjustment stopper member (31) (3
1a) The mutual engagement is released. Therefore, the fine adjustment stopper member (31) can now rotate downward around the connecting pin (3), and as a result, the stopper pin (37) moves rearward inside the elongated hole (20) of the fixed bracket (1). The steering wheel can now be moved up and down, and the position can be finely adjusted by holding the steering wheel in your hand and rotating it up and down together with the tilt bracket (5).

When the tilt bracket (5) rotates up and down, as shown in FIG. ) and the elongated hole (36) of the second lever (84)
By engaging with the downward bent portion (38a) of the second lever (
34) and the fine adjustment stopper member (31) also move up and down. Then, rotate the first lever (08) upward to the lock position at an appropriate position, and tighten the bolt (19>) against the nut (17>. Then, move the j@1 lever (18) downward. Contrary to the case where the fine adjustment stopper plate (22) is rotated backward against the force of the spring (24), the fine adjustment stopper plate (22) is rotated backward at a certain point.
) and the teeth (22a) of the fine adjustment stopper member (31) (3
1a) They begin to interlock and eventually the pin (28)
are firmly clamped by both side edges of the elongated hole (25) at the lower end of the elongated hole (25>), and the teeth (22a) (81a) of the fine adjustment stopper plate (22) and the fine adjustment stopper member (31)
They are strongly interlocked. At this time, pin (28
) are in close contact with both edges of the elongated hole (25), so the pin (28
) does not rattle within the elongated hole (25), and as a result, rattling in the engagement between the teeth (22a) and (31a) of the fine adjustment stopper plate (22) and the fine adjustment stopper member (31) is prevented. In this way, the fine adjustment stopper member (31
) is fixed to the fixed bracket (1), and thereby the first lever (1B) and the retraction operation stopper pin (37)
Tilt bracket (5〉) and fixed bracket (
l>, the tilt bracket (5) and the steering wheel are also fixed in the adjusted position.

After finely adjusting the position of the steering wheel and fixing it, by rotating the second lever (34) downward to the retracted position, the tilt bracket (5) and the steering wheel are automatically rotated to the retracted position. By holding the steering wheel in the retracted position and rotating it to the driving position, the steering wheel can be held in the driving position again.

Next, the operation of the tilt device at this time will be explained with reference to FIGS. 1, 7, and 8.

When the second lever (34> is rotated downward against the force of the spring (35) from the state shown in Fig. 1, the retracting operation stopper pin (37) is moved from the elongated hole (34) of the second lever (34). 3B〉 inside the downward bent part (36a).The second lever (
34) rotates to the lower retracted position, its elongated hole (3
Since the part 6) also moves downward, the tilt bracket (
The retraction operation stopper pin (37) fixed to the tilt bracket (5) comes off from the downward bent part (88a) of the elongated hole (3B) (as shown in Fig. 7), and the force of the spring (14)
) and the steering wheel rotate upward, and the retraction operation stop pin (37) is inserted into the elongated hole (36) of the second lever (34) and the elongated hole (20> of the fixing bracket (1)).
Move backwards inside.

Then, the synthetic resin cover (38) fitted on the retracting operation stopper pin (3 pins) hits the rear end of the elongated hole (20), so that the steering wheel is stopped at the retracted position (the state shown in FIG. 8).

When you hold the steering wheel that has been rotated to the retracted position and rotate it downward, the tilt and bracket (5
〉 also rotates downward, and the retracting operation stopper pin (37) moves forward in both elongated holes (20) (3B).The retracting operation stopper pin (37) then moves to the front end of the elongated hole (3B). When the second lever (84) is rotated upward by the spring (85), the retraction operation stopper pin (37)
> is moved to the lower end of the downward bend (Ha) and engages it, holding the second lever (34) in its operating position. As a result, the tilt bracket (5) and the steering wheel are held in the driving position.

During such retreat and return operations, the teeth (22a) (31a) of the fine adjustment stopper plate (22) and the fine adjustment stopper member (31) are engaged with each other, so that the fine adjustment stopper member (31) does not rotate around the tilt center, and when the tilt bracket (5) is returned to the operating position, the steering wheel will always return to its original position.

Therefore, when the tilt bracket (5) is returned to the operating position, it will always return to the adjustment position, and there is no need for readjustment.

Example 2 This embodiment is shown in FIGS. 9-13.

In these drawings, a vertically long forward bent elongated hole (40>) is formed in the front part of the rotation center of the first lever (18>).The elongated hole (40> has a fine adjustment stopper). A hole (41) formed at the bottom of the plate (22)
) is passed through a pin (42) that is press-fitted and fixed from the right side. The right end of the pin (42) has a male thread (42
a) is formed, and a nut (43〉) for preventing pin removal is screwed into this male threaded portion (42a).
The width of the pin (42) is larger than the diameter of the pin (42).
When 42〉 is inside the bottom of the long hole (40〉), the long hole (40〉
〉 can be moved slightly in the width direction. The width of the upper end of the elongated hole (40>) matches the diameter of the pin (42).

Then, when the pin (42>) reaches the upper end of the elongated hole (40), it is strongly pinched by both side edges of the elongated hole (40).
〉 so that it does not rattle inside. Long hole (40)
A linear extension (43) is formed continuously at the upper end. The width of the extension (43) gradually tapers toward the tip. This and the rotation of the first lever (18) The distance from the center gradually increases from top to bottom.

Figures 9 and 10 show the steering wheel and tilt bracket (5) being held in the operating position.

At this time, the first lever (18) is rotated to the upper lock position and the bolt (19) is locked into the lever shaft (17
) is tightened against. Further, the pin (42) is located at the upper end of the elongated hole (4o) of the first lever (1B), and the pin (42) is held between both side edges of the elongated hole (4o). Then, the pin (42) is pushed backward by the front edge of the elongated hole (4o), and the @rB adjustment stopper plate (2
2) is rotated backward around the pin <23>, and the teeth (22a) (31a) of the fine adjustment stopper brake (22) and the fine adjustment stopper member (31) are strongly engaged with each other. . Therefore, as in the case of the first embodiment, the tilt bracket (5) is held in the operating position against the force of the spring (14).

With the steering wheel held in the driving position, when the first lever (18) is rotated downward and brought to the unlock position as shown in Fig. 11, the pin (42)
When the fine adjustment stopper plate (22) moves downward in the elongated hole (4o) and reaches the bottom thereof, the fine adjustment stopper plate (22) is rotated forward by the spring (24), and the fine adjustment stopper plate (22)
and the teeth (22a) (31) of the fine adjustment stopper member (31).
a) The mutual engagement is released. Therefore, as in the case of the first embodiment, the steering wheel can be held in the hand and rotated up and down together with the tilt bracket (5) to finely adjust the position. Tilt bracket (5
) upward as shown in Fig. 12, then rotate the first lever (18) upward at an appropriate position to the lock position, and then tighten the bolt (19) against the nut (17). )
Tighten. Then, contrary to the case where the first lever (18) is rotated downward, the fine adjustment stopper plate (22)
When the pin (28) is pushed by the front edge of the elongated hole (40>), it rotates backward against the force of the spring (24>), and at a certain point it contacts the fine adjustment stopper plate (22). The teeth (22a) (lla) of the adjustment stopper member (31>) begin to engage with each other, and eventually the pin (42) is inserted into the elongated hole (40).
Slightly reaching the upper end of the inside: A! ! Stopper plate (22
) and the teeth (22a) of the fine adjustment stopper member (31) (3
1a) They are strongly interlocked. At this time, since the pin (42) comes into close contact with both side edges of the upper end of the elongated hole (40), rattling of the pin (42) in the elongated hole (40) is prevented, and fine adjustment stopper play) (22 ) and the teeth (22a) (31a) of the fine adjustment stopper member (31) are prevented from rattling. In this way, the tilt bracket (5>) and the steering wheel are fixed at the adjusted positions as in the first embodiment. In this embodiment, the evacuation and return operations are the same as in the first embodiment.
It is done in the same way. FIG. 13 shows the state of the retracted position.

Effects of the Invention According to the tilt steering device of the present invention, as described above, when the fine adjustment tilt operation lever is in the lock position, the stopper plate is urged toward the stopper member by the pin, and the teeth of both are urged toward the stopper member. Because it is strongly engaged, the nut will not loosen its grip on the lever shaft even if the steering wheel receives an impact. Therefore, even if the tightening torque is low, the tilt bracket is reliably held in the operating position and, as a result, the steering wheel is held in position. In addition, the steering wheel can be automatically moved to the retracted position simply by operating the retraction operation tilt control lever, and when returned from the retracted position to the driving position, it always returns to the previously adjusted position. , no further adjustment is required. Moreover, in order to perform the retracting operation, in addition to the fine adjustment stopper member for fine adjustment, a retracting operation tilt operation lever and retracting operation stopper pin having an elongated hole and an engaging part connected to the elongated hole are required. Since the number of parts is reduced, the structure is simplified, and the tilt steering device can be made lighter.

[Brief explanation of drawings]

1 to 8 show a first embodiment of the present invention, FIG. 1 is a side view of the main part of the tilt steering device, FIG. 2 is a partially cutaway plan view with a part omitted, and FIG. ■ in Figure 1
-■ Line enlarged sectional view Figure 4 is an enlarged sectional view taken along line IV-IV in Figure 1. Figure 5 is a tilt device with a part omitted when the fine adjustment tilt operation lever is in the unlocked position. Fig. 6 is a side view of the main part of the tilt device, with some parts omitted, showing the state during fine adjustment of the tilt bracket; Fig. 7 is when the tilt operation lever for evacuation operation is in the evacuation position. FIG. 8 is a side view of the main part of the tilt device with some parts omitted, and FIG.
9 to 13 show a second embodiment of the present invention, FIG. 9 is a side view of the main part of the tilt steering device, FIG. 10 is an enlarged sectional view taken along the line X-X of FIG. 9, and FIG. FIG. 12 is a partially omitted side view of the main parts of the tilt device when the fine adjustment tilt operation lever is in the unlock position, and FIG. FIG. 13 is a side view of the main part of the tilt device, with some parts omitted, showing the tilt bracket and the steering wheel in a retracted state. (1)... Fixed bracket, (2)... Lower column, (5)... Tilt bracket, (7>... Upper column, (14)... Tension coil spring, (18)...
・・First lever (tilt operation lever for fine adjustment), (2
2) Fine adjustment stopper plate, (22a)...
Teeth, (25) (40)...Elongated hole, (2g) (42)
... Pin, (11) ... Fine adjustment stopper member, (3
1a)...Teeth, <34>...Second lever (tilt operation lever for evacuation operation), (3B)...Elongated hole, (38
a)...Downward bending part (engaging part), (37)...Retraction operation stopper pin. that's all

Claims (1)

[Scope of Claims] A fixed bracket that is fixed to the vehicle body and supports the lower steering shaft via the lower column, and a fixed bracket that is rotatably attached to the fixed bracket around a tilt center and connected to the lower steering shaft by a universal joint. a tilt bracket that supports a fixed upper steering shaft via an upper column; a spring that is provided between the fixed bracket and the tilt bracket and biases the tilt bracket in a direction to rotate the tilt bracket upward; a fine adjustment tilt operation lever rotatably attached to the fixed bracket so as to be able to change the position; a fine adjustment stopper plate rotatably attached to the fixed bracket and having teeth; and a fine adjustment stopper plate rotatably attached to the fixed bracket; a fine adjustment stopper member that is rotatably provided and has teeth that engage with teeth of the fine adjustment stopper plate; and a fine adjustment stopper member that is rotatably attached to the fine adjustment stopper member so that it can be switched between an operating position and a retreat position. , and a tilt operation lever for evacuation operation, which is formed with a long hole that lies on an arc centered on the tilt center when switched to the evacuation position, and a tilt operation lever for evacuation operation that is fixedly provided on the tilt bracket. It is equipped with a retraction operation stopper pin that is fitted into a long hole in the lever so that it can move in the length direction of the lever, and a long hole is formed in either the fine adjustment stopper plate or the fine adjustment tilt operation lever. At the same time, it is fitted to the other side so as to be able to slide freely into the elongated hole,
And when the fine adjustment tilt operation lever is in the lock position, the fine adjustment stopper plate is rotated toward the fine adjustment stopper member so that the teeth of both sides are engaged, and the fine adjustment tilt operation lever is in the unlocked position. The fine adjustment stopper plate is provided with a pin that rotates the fine adjustment stopper plate away from the fine adjustment stopper member to disengage the teeth of both at a certain time, and is connected to the elongated hole in the tilt operation lever for retracting operation. When the lever is in the operating position, the lever engages with the retracting operation stopper pin so as to hold the tilt bracket in the operating position against the spring, thereby holding the stopper pin in the operating position, and the retracting operation tilt operating lever is retracted. A tilt steering device, wherein an engagement portion is formed to release a pin so as to enable the tilt bracket to pivot upwardly to a retracted position by means of a spring when the tilt bracket is switched to the retracted position.