JP2611294B2 - Steering device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial application field) The present invention relates to a steering device for a vehicle, and more specifically, to a tilt mechanism for improving operability and to improve getting on and off. Device having a flip-up mechanism for the vehicle.

(Prior Art) A conventional steering device of this type is disclosed in
The one disclosed in Japanese Patent Publication No. 21860 is known. this is,
The tilt operation for improving the operability and the flip-up operation for improving the getting on / off operation are performed in the same joint portion, and the joint portion is formed at a position far from the driver.

(Problems to be Solved by the Invention) However, in the above-described steering device, since the joint portion is formed at a position far from the driver, the change in the tilt angle of the steering is reduced in the tilt operation. Operability can be further improved, but in the flip-up operation, a large operating angle cannot be taken in order to avoid contact between the steering wheel and the inner panel or the like, and as a result, the steering jumps up. The amount was small, and it was not possible to further improve getting on and off.

Therefore, an object of the present invention is to further improve the operability and the getting on / off property of the steering.

[Configuration of the invention]

(Means for Solving the Problems) The technical measures taken in the present invention to solve the above technical problems are a main shaft to which a handle is fixed at an upper end, and a rotatable main shaft. An upper tube for supporting, an intermediate shaft having an upper end connected to the other end of the main shaft via a universal joint, a lower tube for rotatably supporting the intermediate shaft, and an upper end of the lower tube And a first bracket and a second bracket fixedly attached to the lower end of the upper tube and pivotally connected to each other, and the first bracket and the second bracket are provided between the first bracket and the second bracket. A flip-up mechanism that locks and unlocks the return position and flip-up position with respect to the bracket, and fixes the lower end of the lower tube to the vehicle body And a third bracket provided between a third bracket fixed to the lower tube and a second mounting bracket fixed to the vehicle body, the link being pivotally supported by the first mounting bracket.
A tilt mechanism for locking and unlocking the bracket with respect to the second mounting bracket.

(Operation) The above technical means operates as follows. When the tilt mechanism is unlocked, the main shaft and the intermediate shaft swing about the support portion of the lower tube to the first mounting bracket, and when the flip-up mechanism is unlocked, the main shaft pivots between the first bracket and the second bracket. Swing around the wearing part. Thereby, in the tilt operation, the change in the operation angle can be reduced, so that the operability can be further improved, and in the flip-up operation, the operation angle can be increased, so that the getting on and off can be more improved. Can be improved. And since the components of the flip-up mechanism and the components of the tilt mechanism are independent, the tilt mechanism with a low operation frequency is made manual, and the flip-up mechanism with a high operation frequency is made electric, etc. The flip-up mechanism can be the most effective mechanism to meet the demands on each.

Embodiment An embodiment of the present invention will be described with reference to the accompanying drawings.

As shown in FIGS. 1 to 3, a gear box (not shown) for transmitting power to a tire (not shown) of the vehicle can swing on a shaft 39 via a shaft or the like (not shown). The main shaft 3 is connected via a universal joint 2 to one end of the intermediate shaft 1 connected to the main shaft 3 so as to be swingable and integrally rotate. A handle 4 is fixed to the other end of the main shaft 3 so as to rotate integrally therewith. Therefore, when the handle 4 is rotated, it is transmitted to the gear box via the main shaft 3, the universal joint 2, and the intermediate shaft 1, and the tire of the vehicle operates.

The intermediate shaft 1 is rotatably supported in the lower tube 5 through a bearing or the like (not shown), and the main shaft 3 is rotatably supported in the upper tube 6 through a bearing or the like (not shown). ing.
Further, a U-shaped first bracket 7 having two flanges 7a formed thereon is fixed to one end of the lower tube 5, and a U-shaped bracket having two flanges 8a formed at the other end of the upper tube 6. The second bracket 8 is fixed. The second bracket 8 is connected to the first bracket 7 by fitting a flange portion 7a and a flange portion 8a, and is swingably supported by bolts 9. As a result, the upper housing 6 is swingably supported by the lower housing 5 via the first and second brackets 7 and 8, and integrally swings with the swing of the main shaft 3.

The other end of the lower tube 5 has a first mounting bracket 11 fixed to a vehicle body (not shown) via two links 10.
Is held in. One end of the link 10 is rotatably supported by the lower tube 5 with a bolt 38, and the other end is rotatably supported by the first mounting bracket 11 with a bolt 37. This allows the intermediate shaft 1 and the lower tube 5 to slide back and forth. A cord 12 is provided between the first mounting bracket 11 and the second bracket 8.
A spring 13 is disposed via the main shaft 3 and the attachment 6 so that the main shaft 3 and the attachment 6 are always in the third position around the pin 9.
It is urged to swing clockwise in the figure.

A third bracket 14 is fixed in the vicinity of the lower bracket 5 to which the first bracket is fixed. The third bracket 14 has a flange 15a formed on two sides, and a second mounting bracket 15 fixed to the vehicle body is fitted into the third bracket 14, and an elongated hole 15a is formed.
It is supported by bolts 16 via b. This slot 15b
Thereby, the swing range of the intermediate shaft 1 and the lower tube 5 is regulated. In addition, the bolt 16 has a washer 17
The nut 18 is screwed into the nut 18, and the nut 13 is tightened by the rotation of the tilt lever 19 fixed to the nut 18, whereby the flange 15a of the second mounting bracket 15 and the third bracket 14 are brought into close contact with each other. The swing of the intermediate shaft 1 and the lower tube 5 is restricted so that the intermediate shaft 1 and the lower shaft 5 can be held at arbitrary positions.

Further, a fourth bracket 40 is fixed to the flange portion 7a of the first bracket 7. The case 20 is fixed to the fourth bracket 40. In this case 20, the motor
21, a gear 23 meshing with a worm 22 fixed so as to rotate integrally with the shaft of the motor 21, and a gear 24 rotating integrally with the gear 23 are arranged, and the teeth 24 a of the gear 24 are disposed inside the case 20. It protrudes outside.

Each of the bolts 9 is rotatably supported by a lever 25 and is connected by a shaft 26. A torsion spring 27 is provided between the lever 25 and the second bracket 8. This torsion spring 27 is a lever
The lever 25 can be integrally rotated around the bolt 9 with the rotation of the lever 25, and biases the lever 25 clockwise or counterclockwise in the third illustration depending on its position. A gear 29 having pawls 29a and 29b is pivotally supported on the bolt 9 on the fourth bracket 40 side via a washer 28. The gear 29 is engaged with the gear 24. Further, flanges 25a and 25b are formed on both sides of the lever 25 pivotally supported by the bolt 9 on the fourth bracket 40 side, and the flanges 25a and 25b can be brought into contact with the claws 29a and 29b. I'm sorry. Thereby, the rotational force of the motor 21 is transmitted to the gear 29 via the worm 24, and further, the claw portions 29a, 29
The contact between b and the flange portions 25a and 25b is transmitted to the lever 25, and the lever rotates.

Claw portions 3 are provided at both lower ends of the brim portions 8a and 8b of the second bracket 8.
3,34 are formed respectively. Further, the first bracket 7 is formed with a stopper 35 that can contact the surface 33a of the claw portion 33 and a stopper 36 that can contact the surface 34a of the claw portion 34. The main shaft 3 and the stopper 36 are formed by the stopper 36. The swing range of the attachment 5 is regulated.

Pins 30 are implanted at positions corresponding to the claw portions 33 and 34 of the flange portions 7a and 7b of the first bracket 7, and the pins 30 have cam surfaces 31a and 31c and arc portions, respectively. A cam 31 having a formed 31b is pivotably supported. This cam 31 has a claw
The surface 31d of the cam 31 is in contact with the surface 33b of the claw 33, and the surface 31e is a surface 34b of the claw 34.
It is possible to abut. Also, the cam surfaces 31a and 31c
An arc shape that opposes the rotation locus of 1 and the shaft 2
It has a shape along the outer circumference of the collar 32 fixed to both ends of the collar 0, and is engageable with the collar 32. Further, the arc portion 31b has a shape along the outer periphery of the collar 32 and a shape into which the collar 32 fits, and can be fitted to the collar 32.

Next, the operation will be described with reference to FIGS.

The state shown in FIGS. 1 and 3 is a return state, which is a state at the time of normal running, and the lower bracket 5 is brought into close contact with the flange 15a of the second mounting bracket 15 by tightening the nut 18 and the third bracket 14. Since the swing is regulated, the swing of the intermediate shaft 1 and the main shaft 3 about the shaft 39 is regulated, and the claw 33 of the second bracket 8 is held between the cam 31 and the stopper 35. The collar 32 is engaged with the cam surface 31a of the cam 31 and the collar 32 of the shaft 26 connected to the lever 25, and the collar 32 is biased counterclockwise by the biasing force of the torsion spring 27. Since the rotation of the upper shaft 31 and the swing of the aperture 6 are regulated, the swing of the main shaft about the bolt 9 is regulated.

When the tilt lever 19 is pulled down from this state,
The nut 18 is loosened and the contact between the flange 15a of the second mounting bracket 15 and the third bracket 14 is released, so that the lower tube 5 and the upper tube 6 can swing along the elongated hole 15b, and the intermediate shaft 1 and the main shaft 3
Can swing about the shaft 39. As a result, the position of the steering wheel 4 can be adjusted to an arbitrary upper and lower position as indicated by the two-dot chain lines 4a and 4b in the third illustration, and the steering wheel can be positioned at a desired position by the driver. At this time, Roachiyubu 5,
The attachment 6 swings up and down while moving back and forth by the link 10 together with the intermediate shaft 1 and the main shaft 3. Thereafter, when the tilt lever 19 is pulled upward, the nut 18 is tightened, and the flange portion of the second bracket 15 is
15a and the third bracket 14 come into close contact with each other, and as a result, they cannot swing due to friction and are held at an arbitrary position. In the above-described tilt operation, since the swing center is formed at a position farther than the handle 4, the position of the handle can be more finely adjusted, and the operability of the handle 4 can be further improved.

Next, from the state shown in FIG. 1 to FIG.
When the 21 is operated, the gear 29 rotates via the worm 22, the gear 23 and the gear 24. By the rotation of the gear 29, the gear
When the claw portion 29a of the 29 and the flange portion 25a of the lever 25 abut,
Lever 25 rotates torsion spring 27 by rotation of gear 29
Rotate in the third clockwise direction in FIG. By the rotation of the lever 25, the shaft 26 also rotates in the same direction, the engagement between the collar 32 and the cam surface 31a of the cam 31 is released, and the circular arc portion 31b
The cam 31 rotates together with the lever 25 in the third clockwise direction in FIG. This allows the stopper 35 and cam
The holding of the claw 33 of the second bracket 8 with the surface 31d of the base 31 is released, and the attachment 6 can swing about the pin 9. As a result, the second bracket 8 is pulled by the urging force of the spring 13. Then, the aperture 6 and the main shaft 3 swing clockwise until the claw portion 34 comes into contact with the stopper 36, and the handle 4 is flipped up as shown by the two-dot chain line 4c in FIG. During this time, since the motor 21 continues to operate, the lever 25 further continues to rotate clockwise in the third illustration, and the cam 31 also continues to rotate due to the engagement between the arc portion 31b and the collar 32. As a result, the claw portion 34 is sandwiched between the stopper 36 and the surface 31e of the cam 31, and thereafter, the collar 32 is
By the rotation of, it comes off from the arc portion 31b and engages with the cam surface 31c. At this time, the torsion spring 27 rotates in the third clockwise direction in FIG. 3 in accordance with the rotation of the lever 25, and the third spring is drawn from the line connecting the bolt 9 and the engaging portion of the torsion spring 27 with the second bracket 8. It will be located on the right side in the figure. As a result, the lever 25 is urged in the third clockwise direction by the torsion spring 27, and the cam 31 rotates clockwise until the collar 32 and the cam surface 31c of the cam 31 engage. The surface 31e of the abutment 31 comes into contact with the surface 34b of the claw 34, and the rotation of the cam 31 is restricted, and the locking state is established. Thereby, Huddle 4
Is securely fixed at the position of the third two-dot chain line 4c shown in FIG. 3, and even if a load is applied to the handle 4, the handle 4 does not move, and even if a hand is applied when getting on or off, the handle 4 returns to the return position. This eliminates the problem of getting lost and is safer. The above-mentioned bouncing operation is performed by the handle 4
The swing center is formed at a position close to the
Can be made larger, and the driver's getting on and off can be further improved.

Also, during the operation described above, if the swing of the main shaft 3 and the aperture 6 due to the urging force of the spring 13 is prevented by a load such as human power, the surface 34b of the claw portion 34 of the second bracket 8 and the surface of the cam 31 31f abuts, rotation of the cam 31 is prevented, and the lever 25 is disengaged from the cam surface 31a of the cam 31 and the collar 32, and is rotated to a position where the collar 32 engages with the arc portion 31b of the cam 31. However, as a result, the motor 21 is in an overload state, and the operation of the motor 21 is stopped by an overload detecting means (not shown) or the like. Thereafter, when the load is released, the main shaft 3 and the aperture 6 swing by the urging force of the spring 13, and the handle 4 is brought up as shown by the two-dot chain line 4 c in FIG. Since the rotation of the torsion spring 27 is located on the third right side in the drawing from the line connecting the bolt 9 and the engaging portion of the torsion spring 27 with the second bracket 8 by rotation.
The lever 25 is moved to the third position by the urging force of the torsion spring 27.
Rotate clockwise in the figure, the collar 32 rotates the cam 31,
As a result, as described above, the claw portion 34 of the second bracket 8 is sandwiched between the stopper 36 and the surface 31e of the cam 31 to be in a locked state.

When the motor 21 is operated in the opposite direction to the above operation from the above-mentioned flipped-up state, the lever 25 rotates counterclockwise in the third illustration and the engagement between the collar 32 and the cam surface 31c of the cam 31 is released. Then, the collar 32 engages with the arc portion 31b of the cam surface 31, the cam 31 rotates counterclockwise in the third illustration, and the surface 33b of the claw portion 33 and the surface 31d of the cam 31 come into contact and stop. It should be noted that the operation is performed in the same manner as the motor 20 is flipped up. . As a result, the clamp between the stopper 36 of the claw portion 34 of the second bracket 8 and the cam surface 31e of the cam 31 is released, and the aperture 6 and the main shaft 3 can swing. Thereafter, when the main shaft 3 and the attachment 6 are pressed down against the urging force of the spring 13, the surface 33 of the claw 33 of the second bracket 8 is pressed.
The handle a is brought into the second illustrated return state from the flipped-up state as indicated by the two-dot chain line 4c illustrated in the third illustration due to the contact between the a and the stopper 35. At this time, since the torsion spring 27 is located on the left side in the third illustration, the lever 25 rotates counterclockwise in the third illustration by the urging force of the torsion spring 27, and the cam 31 also 3rd rotation counterclockwise,
As a result, the surface 31d of the cam 31 comes into contact with the surface 33b of the claw 33, the claw 33 is sandwiched by the stopper 35, and the collar 32 and the cam surface 31a are engaged. By the urging force in the counterclockwise direction shown in FIG. 3, the cam 31 is firmly engaged and the rotation of the cam 31 in the counterclockwise direction shown in FIG. As a result, the handle 4 is securely fixed at the return position, and even if a load is applied to the handle 4, the handle 4 does not move and is safe. In addition, the handle 4 reliably returns from the flip-up position to the return position, so that the return position does not shift. Further, since the cam surfaces 31a and 31c of the cam 31 follow the shape of the collar 31 and are opposed to the rotation trajectory, the cam 31 is securely engaged with the collar 32 without backlash to obtain a secure locking state. It is possible to prevent rattling of the handle 4 and release of the lock due to vibration or the like.

〔The invention's effect〕

A main shaft having a handle fixed to an upper end thereof, an upper tube rotatably supporting the main shaft, an intermediate shaft having an upper end connected to the other end of the main shaft via a universal joint; A lower tube that rotatably supports the midi shaft,
A first bracket and a second bracket fixed to and fixed to the upper end of the lower tube and the lower end of the upper tube, respectively, and are provided between the first bracket and the second bracket. A flip-up mechanism for locking and unlocking the second bracket at the return position and the flip-up position with respect to the first bracket, and a lower end of the lower tube can be swung by a first mounting bracket fixed to a vehicle body. , And a tilt provided between a third bracket fixed to the lower tube and a second mounting bracket fixed to the vehicle body to lock and unlock the third bracket with respect to the second mounting bracket. Since the steering device having the mechanism is configured, the change in the operation angle can be reduced in the tilt operation, so that It is possible to improve the work of, in the flip-up operation, it is possible to increase the operation angle, it is possible to further improve the passenger resistance. And
Since the components of the flip-up mechanism and the components of the tilt mechanism are made independent, the tilt mechanism with low operation frequency is made manual, the flip-up mechanism with high operation frequency is made electric, etc.
The tilt mechanism and the flip-up mechanism can be the most effective mechanisms to satisfy the requirements for each.

[Brief description of the drawings]

FIG. 1 is a perspective view of a steering device according to the present invention, FIG. 2 is an exploded perspective view thereof, and FIG. 3 is a sectional view thereof. DESCRIPTION OF SYMBOLS 1 ... Intermediate shaft, 2 ... Universal joint, 3 ... Main shaft, 4 ... Handle, 5 ... Roachubu, 6 ... Atupatubu, 7 ... First bracket, 8 ... Second bracket, 9, 16, 37, 38 ... bolt, 10 ... link, 11 ... first mounting bracket, 12 ... cord, 13 ... spring, 14 ... third bracket, 15 ... second mounting bracket, 17,28 … Washer, 18… nut, 19… tilt lever, 20… case, 21… motor, 22… worm, 23, 24… gear, 25… lever, 26… shaft, 27… Torsion spring, 29 ... Gear, 30 ... Pin, 31 ... Cam, 32 ... Collar, 33, 34 ... Claw, 35.36 ... Stopper, 39 ... Shaft, 40 ... Fourth bracket.

Claims (1)

(57) [Claims] 1. A main shaft having a handle fixed to an upper end, an upper tube rotatably supporting the main shaft, and an intermediate having an upper end connected to the other end of the main shaft via a universal joint. A lower tube rotatably supporting the intermediate shaft; a first bracket and a second bracket fixedly attached to an upper end of the lower tube and a lower end of the upper tube and pivotally connected to each other; A bracket, a flip-up mechanism provided between the first bracket and the second bracket for locking and unlocking the second bracket to the return position and the flip-up position with respect to the first bracket, and a lower portion of the lower tube. A link for swingably supporting a side end portion of the first mounting bracket fixed to the vehicle body, and a link fixed to the lower tube; Steering device having a tilt mechanism for locking and unlocking with respect to the second mounting bracket to the third bracket is provided between the second mounting bracket fixed to the third bracket and the vehicle body.