JPH09315147A - Vehicular sunvisor bearing structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily fit a sun visor support arm to a sun visor bracket. SOLUTION: A rotation shaft 8 of a support arm for fitting a sun visor to the panel of a vehicle is formed with a pin hole 14 into which a securing pin 12 is inserted. The pin hole 14 is formed at its bottom with a ball-like hole in which a ball-like part 24 provided on a leg 23 of the securing pin 12 is fitted. The rotation shaft 8 is formed at its tapered part 16 with a slit 20 made from the pin hole 14 through its surface having a plurality of slit pieces 20a. A sun visor bracket 7 is formed with a bearing hole 11 to be fitted on the rotation shaft 8. When the tapered part 16 of the rotation shaft 8 is inserted into the bearing hole 11 of the bracket 7 and the securing pin 12 is inserted into the pin hole 14 of the rotation shaft 8, the slit pieces 20 expand outward to fix the rotation shaft 8 to the bracket 7.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a bearing structure for a vehicle sun visor.

[0002]

2. Description of the Related Art FIGS. 8 and 9 show a conventional sun visor bearing structure. The bearing structure 30 includes a sun visor bracket 32, a washer 3 and a rotating shaft 31 of a support arm for mounting a sun visor (not shown) on the vehicle body side.
3, the coil spring 34 is inserted, and the tip of the rotating shaft 31 is swaged by the swaging washer 35. Further, a taper hole 37 is formed in the insertion hole 36 of the sun visor bracket 32, and a taper 39 is also formed in the rotary shaft 31 corresponding to the taper hole 37. The rotating shaft 31 and the sun visor bracket 32 are attached by fitting the taper hole 37 and the taper 39 by receiving the elastic force of the coil spring 34 arranged in a compressed state between them.

[0003]

However, in the conventional bearing structure for a vehicle sun visor as described above, the number of parts is large, the assemblability of parts is poor, and the cost and time are heavy. There was a flaw. The present invention has been made in view of the above problems, and an object of the present invention is to provide a bearing structure for a vehicle sun visor that requires a small number of parts, has good assembly of parts, and has a small cost in terms of time. And

[0004]

SUMMARY OF THE INVENTION The above object is to provide a bearing hole in which a rotation shaft of a support arm for rotatably supporting a sun visor body is extended from the sun visor and the rotation shaft is provided in a sun visor bracket. In the bearing structure of the vehicle sun visor for holding the sun visor bracket on the roof panel, the shape of the bearing hole of the sun visor bracket is made to match the rotation axis of the support arm, and the sun visor bracket is arranged along the center axis of the rotation axis. A pin hole is provided, a spherical hole is provided at the bottom of the pin hole, and at least two or more slit pieces formed by slits are provided from the spherical hole to the outer peripheral portion of the rotating shaft, and the slit pieces are adjacent walls. Insert the fixing pin, which is thicker than the head part, the head contacts the opening of the bearing hole, and the tip of the leg has a spherical part that fits into the spherical hole, into the pin hole of the rotating shaft. At times It is achieved by a bearing structure of a vehicle sun visor, characterized in that holding the shaft in San visor bracket.

[0005]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of a bearing structure for a vehicle sun visor according to the present invention will be described below with reference to the drawings. As shown in FIG. 1, a sun visor 3 that blocks light from the front and sides is provided inside a vehicle body front portion 2 of an automobile 1. This sun visor 3, as shown in FIG.
The driver seat includes a sun visor body 4 having a substantially horizontally long rectangular shape, a support arm 5 having a tip end side attached to the sun visor body 4, and a shaft portion 6 integrally formed on the upper end of the other end of the sun visor body 4. It is also disposed at the front upper position on the passenger seat side.

In the sun visor 3, a rotary shaft 8 which is bent substantially at a right angle at the end of the support arm 5 has a sun visor bracket (hereinafter referred to as a bracket) 7 interposed therebetween.
It is attached to the roof panel 9. Then, the sun visor body 4 can be rotated along the surface of the roof panel 9 about the rotation shaft 8. Further, the other end of the sun visor body 4 can be pivoted up and down about the support arm 5 by hooking the shaft portion 6 on the holder 10 to stop it.

FIG. 3 shows a state in which the bracket 7 is attached to the rotary shaft 8 of the support arm 5, and FIG. 4 is an exploded view thereof. As shown in the figure, the rotary shaft 8 is inserted at its tip into a bearing hole 11 provided in the bracket 7, and the fixed pin 12 is inserted into a pin hole 14 provided inside the rotary shaft 8. Is installed. Hereinafter, this mounting method will be described in detail.

FIG. 5 shows the pivot shaft 8 of the support arm 5.
The rotating shaft 8 has a cylindrical shape, and a taper portion 16 having a diameter that decreases toward the tip portion 15 is provided so that the tip portion 15 has the same diameter. Inside the rotary shaft 8, a pin hole 14 is provided along the axis from the end 17 to almost the large diameter portion of the taper portion 16, and a spherical hole 18 is formed at the bottom thereof as shown in FIG. 6A. are doing. A slit 20 is formed in the tapered portion 16 of the rotary shaft 8 from the outer periphery of the rotary shaft 8 to the pin hole 14 including the spherical hole 18, and a slit piece 20a is provided in a portion surrounded by the slit 20. . The slit piece 20a has elasticity with a certain force or more. Although the number of slits 20 is two in this embodiment, any number of slits 20 may be used as long as it is two or more.

FIG. 7A is a sectional view of the spherical hole 18.
As shown in the figure, the portion where the slit 20 of the spherical hole 18 is provided is the adjacent wall portion 16a which is not the slit piece 20a.
It has a larger wall thickness than that of. Then, with respect to the thickened portion, the thickness t is provided inward of the spherical hole 18.
Only protruding. On the other hand, the fixing pin 1 shown in FIG.
2 is a dish-shaped head portion 22 and a leg portion 23, and a spherical portion 24 at the tip portion.
Is provided. The spherical portion 24 of the fixed pin 12 has the rotation shaft 8
The diameter of the leg portion 23 is the same as that of the spherical hole 18, and the length of the leg portion 23 is the same as the length from the end 17 of the rotating shaft 8 to the spherical hole 18.

When the fixing pin 12 is inserted into the pin hole 14, as shown in FIG. 6B, when the head 22 of the fixing pin 12 comes into contact with the end 17 of the rotary shaft 8, the spherical shape is obtained. The portion 24 widens the gap of the slit piece 20a and fits into the spherical hole 18. The portion of the spherical hole 18 where the slit piece 20a abuts the spherical portion 24 has the same curvature as the spherical hole 18,
Abut the circumference of the.

As shown in FIG. 3, the bearing hole 11 of the bracket 7 is fitted in the tapered portion 16 of the rotary shaft 8 and is tapered.
5 is provided so that the surface of the annular portion 26 of the bracket 7 and the surface of the end portion 17 of the rotating shaft 8 become flat when they are fitted together. The bracket 7 is attached to the panel 9 by fitting the annular portion 26 into a hole 29 provided in the panel 9 on the vehicle body side and inserting a screw 7b into a mounting hole 7a provided in the bracket 7. The size of the head portion 22 of the fixing pin 12 described above is made sufficiently larger than the diameter of the opening portion of the bearing hole 11.

The bearing structure of the vehicle sun visor according to the embodiment of the present invention is constructed as described above. Next, its operation will be described.

As shown in FIG. 3, the rotary shaft 8 of the support arm 5 is inserted into the bearing hole 11 of the bracket 7, and the fixing pin 12 is inserted into the pin hole 14 of the rotary shaft 8. The fixed pin 12 is
Since the diameter of the spherical portion 24 at the tip portion is larger than the gap between the slit pieces 20a, 20a, the spherical portion 24 has the slit piece 2
0a and 20a are opened outward, and then the spherical portion 24 is fitted into the spherical hole 18. As a result, the rotating shaft 8 and the bracket 7 are fixed.

At this time, as shown in FIG. 7A, the spherical portion 2
4 causes the slit piece 20a to protrude outward from the tapered portion 16 by the thickness t, so that the slit 20 presses the surface of the tapered hole 25 of the bracket 7 in the direction of arrow a, as shown in FIG. 6B. This pressing force causes the bracket 7 to rotate on the rotating shaft 8
Attempt to move it in the direction b to exit. However, since the fixing pin 12 inserted into the pin hole 14 of the rotating shaft 8 regulates the annular portion 26 of the bracket 7, the head portion 22 serves as a stopper and the bracket 7 does not come off from the rotating shaft 8. 7B is a sectional view of the pin hole 14 when the fixing pin 12 is inserted into the pin hole 14.

As a result, the slit piece 2 of the rotary shaft 8 is also formed.
Since the surface 0a and the surface of the tapered hole 25 of the bracket 7 are strongly pressed against each other, the fixing force between the rotating shaft 8 and the bracket 7 becomes large. Therefore, when these are attached to the panel 9 side, rattling of the sun visor body 4 is prevented.

Although the embodiments of the present invention have been described above, the present invention is, of course, not limited thereto, and various modifications can be made based on the technical concept of the present invention.

For example, according to the above-described embodiment, the slit piece 20a is projected inward of the pin hole 14 without inserting the fixing pin 12 into the pin hole 14, but the slit piece 20a is formed into the rotary shaft 8. You may make it project to the surface side of the taper part 16.

Further, in the above embodiment, the taper portion 16 is formed on the rotary shaft 8, but the taper portion is not formed, that is, the rotary shaft 8 has a cylindrical shape and the slit pieces are provided. Good.

[0019]

As is apparent from the above description, according to the present invention, since the fixing pin can be inserted into the pin hole to mount the rotating shaft on the sun visor bracket, the assembling property is good and the mounting time is greatly increased. Can be shortened. Since the number of parts is small, the material can be saved.

[Brief description of drawings]

FIG. 1 is a perspective view showing a mounting position of a sun visor according to an embodiment of the present invention.

FIG. 2 is a front view showing a state in which the sun visor according to the same embodiment is attached.

FIG. 3 is a side sectional view showing a bearing structure of a vehicle sun visor according to the same embodiment.

FIG. 4 is an exploded perspective view showing a bearing structure of a vehicle sun visor according to the same embodiment.

FIG. 5 is a perspective view showing a rotating shaft of a support arm of the bearing structure of the vehicle sun visor according to the same embodiment.

FIG. 6A is a side sectional view showing a pin hole of a bearing structure for a vehicle sun visor according to the same embodiment. B is a side sectional view showing a state in which a fixing pin is inserted into the pin hole.

7A is a cross-sectional view taken along line XX in FIG. 6A. 6B is a sectional view taken along line YY in FIG. 6B.

FIG. 8 is a cross-sectional view illustrating a conventional sun visor mounting structure.

FIG. 9 is an exploded perspective view illustrating a conventional sun visor mounting structure.

[Explanation of symbols]

 1 Car 3 Sun visor 4 Sun visor main body 5 Support arm 7 Sun visor bracket 8 Rotating shaft 11 Bearing hole 12 Fixing pin 14 Pin hole 18 Spherical hole 20 Slit 20a Slit piece 23 Leg 24 Spherical part 25 Taper hole

Claims (2)

[Claims] 1. A rotating shaft of a support arm for rotatably supporting a sun visor body is extended from the sun visor, and the rotating shaft is held in a bearing hole provided in a sun visor bracket, and the sun visor bracket is fixed to the roof. In a bearing structure for a vehicle sun visor fixed to a panel, the shape of the bearing hole of the sun visor bracket is matched with the rotation axis of the support arm, and a pin hole is provided along the central axis of the rotation axis. Is provided with a spherical hole in the bottom thereof, and at least two or more slit pieces formed by slits are provided from the spherical hole to the outer peripheral portion of the rotating shaft, and the slit pieces are made thicker than the adjacent wall portions, Is in contact with the opening of the bearing hole, and the fixing pin provided with a spherical portion whose tip of the leg fits into the spherical hole is inserted into the pin hole of the rotating shaft to attach the rotating shaft to the sun visor bracket. Protection A bearing structure for a vehicle sun visor characterized by having it. 2. A taper portion that reduces in diameter toward an end of the rotation shaft is provided on an outer peripheral portion of the rotation shaft of the support arm, the slit is provided in the taper portion, and a bearing hole of the sun visor bracket is provided. The bearing structure for a vehicle sun visor according to claim 1, wherein a taper hole that fits into the taper portion is provided in the.