JPH0447023Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field This invention relates to a projectile support device for a tilt steering device in a steering device for a vehicle, particularly a passenger car.

Prior Art A tilt steering device rotatably supports a tilt bracket, on which the steering wheel is pivotally supported, on a mounting bracket in order to maintain the steering wheel at the optimum driving position for the driver. A bullet is interposed between the mounting bracket and the tilt bracket to constantly apply an upward rotational force to the tilt bracket, and a lock means is provided for tightening and fixing the tilt bracket in a desired tilted state. For example, as shown in FIG. 5, the upper tube 3 is fixed to a tilt bracket 7 rotatably supported by a tilt hinge 9 on a mounting bracket 5 fixed to a part B of the vehicle body. An upper shaft (not shown) is provided passing through the tube 3, and a steering wheel (also not shown) is connected to the upper end of the upper shaft.

By the way, as shown in FIGS. 5 to 7, the mounting bracket 5 and the tilt bracket 7
Between the coil spring 37 and an eye end 41 to which the coil spring 37 is to be connected, a ball end 40 that locks to the tilt bracket 7, and a wire 39 comprising a seat 45 for the ball end 40. Provided, this ammunition 48
is biasing the tilt bracket 7 in the counterclockwise direction in the drawing with the tilt hinge 9 as the center. A bracket guide 49 for preventing the ammunition 48 from rotating upward is attached to the mounting bracket 5.
protrudes from the inner surface of the This bracket guide 49 is formed in the shape of a hook having curved surfaces both in the cross-sectional direction and the width direction so as to be able to hold the wire 39, and is fixed by spot welding. Furthermore, the following structure is adopted as a locking means for maintaining the tilt bracket 7 at a desired angle of inclination. An upper tooth 19 is integrally formed at one end of the tilt bracket 7. On the other hand, a ratchet 23 is rotatably supported on the mounting bracket 5 via a pin 21, and a lower tooth 25 that engages with the upper tooth 19 is formed at one end of the ratchet 23.
A substantially U-shaped engagement groove 23a and a cam surface 23b continuous thereto are formed. Further, at the free end of the operation lever 29 which is rotatably supported on the shaft 9 together with the tilt bracket 7, there is a roller 31 that can be engaged with the engagement groove 23a of the ratchet 23.
is pivoted. The coil spring 35 is attached to the locking portion 3 provided on the mounting bracket 5.
3b and a locking portion 33a provided on the operating lever 29
The operating lever 29 is biased in the counterclockwise direction in the drawing with the shaft 9 as the center.

In the configuration of the conventional example described above, in order to set the optimal driving position of the steering wheel, when the operating lever 29 is pushed down in the clockwise direction in the figure, the roller 31 separates from the cam surface 23b and simultaneously engages with the engagement groove 23a. In order to press and rotate the ratchet 23 clockwise, the engagement between the upper teeth 19 and the lower teeth 25 is released.
Therefore, the tilt bracket 7 becomes rotatable about the shaft 9, and is raised counterclockwise by the biasing force of the coil spring 37 stretched through the wire 39, and is tilted at the maximum angle. With the operating lever 29 pressed down, in order to obtain the optimal driving position of the steering wheel, if the steering wheel is pushed down to that position and the operating lever 29 is released, the biasing force of the coil spring 35 will cause the operating lever 29 to rotates counterclockwise and returns to the initial state, and at the same time, the roller 31 comes into contact with the cam surface 23b again to press and rotate the ratchet 23 counterclockwise. As a result, the upper teeth 19 and the lower teeth 25 are engaged with each other, and the tilt bracket 7 is fixed.

Problems to be solved by the invention According to the above conventional tilt steering device,
When the operating lever 29 is operated to disengage the upper tooth 19 and the lower tooth 25, the tilt bracket 7 is flipped upward around the tilt hinge 9 by the force of the bullet 48 and tilted at the maximum angle. At this time, since the ammunition 48 is located on a straight line connecting its locking ends, it floats above the mounting bracket 5 and the tilt bracket 7.
This corresponds to part B of the vehicle body. Therefore, a bracket guide 49 as described above is provided so that the entire ammunition 48 can be accommodated within the mounting bracket 5 during the flip-up operation of the steering column. This bracket guide 49 is connected to the wire 3
This prevents the mounting bracket 9 from moving upward to prevent it from flying out above the mounting bracket 5.
It is fixed to the upper part of the inner wall of the mounting bracket 5 by spot welding.

However, the bracket guide 49
Since it is directly subjected to the impact of force 8 and is fixed by spot welding, there is a risk of it coming off from the mounting bracket 5. If the bracket guide 49 falls off, the ammunition 4
In addition to damaging part B of the vehicle body in step 8, there is a risk that the detached bracket guide 49 may become caught in the joint portion 13, preventing the steering shaft from rotating and causing an inability to control the vehicle.

Means for Solving the Problems In order to solve the above-mentioned problems, the present invention has a tilt bracket that is pivotally supported by a mounting bracket fixed to a part of the vehicle body and can be rotated in the vertical direction. A tilt steering comprising a bracket guide fixed to a mounting bracket, which is always biased in the flip-up direction, and which locks a substantially middle portion of the ammunition to prevent the bullet from rotating upward. In the device, the bracket guide includes a hook-shaped guide portion having curved surfaces in both the cross-sectional direction and the width direction, a support portion fixed to the mounting bracket, and a hook-shaped guide portion integrally formed on the back surface of the support portion. The latching portion protrudes from a slit formed in the mounting bracket to the outer surface thereof and latches the bracket guide to the mounting bracket, and the supporting portion latches onto the inside of the mounting bracket. Provided is a bullet support device for a tilt steering device, characterized in that the mounting bracket is fixed to a side surface by welding, and the mounting bracket is held between the support portion and the hook portion of the bracket guide.

Effects According to the above structure of the present invention, the hook part of the bracket guide is hooked to the slit or through hole formed in the mounting bracket to make it difficult to separate from the mounting bracket, and in addition, spot welding is performed. As a result, the bracket guide can sufficiently withstand the impact of the bullet and will not easily fall off, thus preventing the risk of causing the above-mentioned danger.

Embodiments The present invention will be explained below based on illustrated embodiments.

Figure 1 is a side view of main parts, front view of main parts, and
Figures A and B are a front view and a sectional view taken along the line AX-X in Figure 3, and Figures 4A and B are a front view and a sectional view taken along the line AX-X in Figure 4, showing the second embodiment of the invention. It is an X sectional view. The drawings show only the main parts of the present invention, and the parts other than those shown have the same structure as the conventional example, and the same reference numerals in the drawings as in FIGS. 5 to 8 refer to the same parts. represent

As shown in FIGS. 1 and 2, the bracket guide 49 includes a hook-shaped guide portion 49a having curved surfaces in both the cross-sectional direction and the width direction, and a support portion 49b fixed to the mounting bracket 5.
and a hook-shaped hook portion 50 integrally molded on the back surface of this support portion 49b, and this hook portion 50 connects to the slit 5 formed in the mounting bracket 5.
1 and protrudes through the outer surface to be latched to the mounting bracket 5, and the support portion 49b is non-removably coupled to the inner surface of the mounting bracket 5 by spot welding to support the bracket guide 49. The mounting bracket 5 is held between the portion 49b and the hook portion 50.

The above configuration will be explained based on FIGS. 3 and 4. First, in the first embodiment shown in FIG.
A hook-shaped hooking portion 50 is integrally formed on the back surface of the support portion 49b of the bracket guide 49, and the hooking portion 50 is passed through a slit 51 to the outside of the mounting bracket 5 to be hooked.
In addition, spot welding 52 is applied to the support portion 49b of the bracket guide 49. Latching part 50
is formed by integrally projecting or forming in advance a plate-shaped piece that can be inserted into the slit 51 perpendicularly to the back surface of the support part 49b of the bracket guide 49, and when the bracket guide 49 is attached to the mounting bracket 5, The latching portion 50 is constructed by inserting the plate-like piece and bending the plate-like piece protruding from the slit 51 downward.

On the other hand, the second embodiment of the present invention shown in FIG.
The hooking portion 50 is integrally formed by punching out a part of the support portion 49b of the bracket guide 49, and the hooking portion 50 does not need to be bent when mounting the bracket guide 49 as in the previous example.
It is formed into a key shape in advance during manufacturing, and is configured to be inserted through a through hole 53 into which the hooking portion 50 can be fitted and engaged with a slit 51. The through hole 53 communicates with the slit 51 and the hooking part 5
0 can be loosely fitted. In this case, the hooking portion 50 is first inserted into the through hole 53, and then by moving the bracket guide 49 diagonally upward to the left in the figure, it engages with the slit 51 and is latched and fixed to the mounting bracket 5. . Once the hooking portion 50 is hooked and fixed to the slit 51, the support portion 49b of the bracket guide 49 and the mounting bracket 5 are integrally joined by spot welding 52 as in the front row.

In the bracket guide 49 in the embodiment according to the present invention, the hanging part 50 passes through the slit 51 formed in the mounting bracket 5 and is latched, and the supporting part 49b and the latching part 50 lock the mounting bracket. 5 is held between the mounting brackets 5 and 5, the bracket guide 49 is reinforced with stronger strength than when it is fixed to the mounting bracket 5 by mere spot welding, and does not easily fall off due to the impact of the ammunition 48. .

Effects of the invention According to the invention described above, when the guide portion of the bracket guide is subjected to an impact due to the force of a bullet, it not only pushes the bracket guide upward, but also pushes the bracket guide welded to the mounting bracket upward. A moment is generated around the upper end of the support part (the upper end of the contact surface between the support part of the bracket guide and the inner surface of the mounting bracket) as a fulcrum, and a force is applied that tries to separate the support part from the mounting bracket, but the bracket guide By holding the mounting bracket between the supporting part and the latching part, the peeling force applied to the welded part between the mounting bracket and the supporting part is reduced, so that the welding between the bracket guide and the mounting bracket is reduced. This prevents peeling of parts and improves reliability against peeling.
It has sufficient strength to withstand the impact of the bomb, and does not fall off easily, eliminating the risk of becoming unable to control the aircraft.

[Brief explanation of the drawing]

Figure 1 is a side view of the main parts of the tilt steering device according to the present invention, Figure 2 is a front view of the same, and Figures 3A and B.
FIG. 3 is a front view and FIG. 3 showing the first embodiment of the present invention.
AX-X sectional view, FIGS. 4A and B are a front view and FIG. 4 AX-X sectional view showing the second embodiment, FIG. 5 is a side view of main parts corresponding to FIG. 1 in the conventional example, FIG. 6 is a plan view of the same, and FIG. 7 is a front view of the same. 5... Mounting bracket, 7... Tilt bracket, 9... Tilt hinge, 37... Coil spring, 39... Wire, 48... Bullet, 49... Bracket guide, 49a... Guide portion, 49b... Support part, 50... Latch part, 51
...Slit, 53...Through hole.

Claims (1)

[Scope of utility model registration request] A tilt bracket, which is pivotably supported by a mounting bracket fixed to a part of the vehicle body and is rotatable in the vertical direction, is always biased in the flip-up direction via a bullet, and is located approximately in the middle of the bullet. In a tilt steering device in which a bracket guide is fixed to a mounting bracket, the bracket guide is fixed to a mounting bracket, and the bracket guide is a hook having a curved surface in both the cross-sectional direction and the width direction. The mounting bracket includes a shaped guide portion, a support portion fixed to the mounting bracket, and a hook-shaped hook portion integrally formed on the back surface of the support portion, and the hook portion is formed on the mounting bracket. The bracket guide is latched to the mounting bracket by protruding through the outer surface from the slit, and the supporting portion is fixed to the inner surface of the mounting bracket by welding, and the supporting portion and the latching portion of the bracket guide A bullet support device for a tilt steering device, characterized in that the mounting bracket is clamped.