JPS6112244Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to an improvement of a sun visor for an automobile.

Automobile sun visors are folded and set on the ceiling when not in use, and when the driver's seat is exposed to sunlight, they are rotated and lowered from the ceiling to provide shade.

However, even if such a sunshade is provided, the sunshade effect may be insufficient under normal usage conditions when the sun shines almost parallel to the driver's seat, such as during sunset or morning sun.

Therefore, this idea was developed to create a sun visor for automobiles that, in addition to the normal rotating function of a sun visor, can also be lowered to a lower position to provide a sunshading effect even in the face of almost parallel solar radiation such as from the morning sun or the setting sun. This is what we provide.

Embodiments of this invention will be described in detail below with reference to the drawings.

Figures 1 and 2 show a sun visor for an automobile according to this invention, which includes a bracket 1 that is fixed to the ceiling surface of the vehicle interior by screws, etc., and a shaft that connects one end to the bracket 1. At the same time, a spring 2 is attached to the protruding end of the bracket 1.
an L-shaped shaft 3 which is provided with an appropriate frictional holding force through a clutch mechanism 4; a crankshaft 5 coaxially mounted on the other end of the shaft 3 via a clutch mechanism 4; It basically consists of a sun visor main body 6 which is rotatably supported around the end side of the sun visor main body 6.

In normal use, the clutch mechanism 4 clutches between the two shafts 3 and 5 to prevent rotation of the crankshaft 5, and releases the clutch by an appropriate external operation. It has the function of re-clutching the clutch after it has been turned.

FIG. 3 shows an embodiment of the clutch mechanism 4, which includes a clutch sleeve made of an elastic material such as plastic, which is located on the outer periphery of the shaft 3 and crankshaft 5 and joins their end surfaces in a butt state. It has 6.

A plurality of locking pawls 6a are protruded from the inner peripheral edge of the fitting side opening of the shaft 3 of the clutch sleeve 6, and the locking pawls 6a are elastically inserted into a locking groove 3a formed on the outer periphery of the shaft 3. The clutch sleeve 6 is fixed to the outer periphery of the shaft 3 by fitting into the shaft 3.

Further, an oval flange 6b as shown in FIG. 4a is provided on the inner peripheral edge of the opening of the clutch sleeve 6 on the side where the crankshaft is fitted. Just a circular groove 5 set to the same diameter as the inner circumference
a is formed, and this portion is also elastically fitted.

Therefore, when the sun visor body 6 is further lowered from the normal usage state (see Fig. 1), by rotating the crankshaft 5 as shown in Fig. 4b, the flange 6b of the clutch sleeve 6 is elastically expanded. Open. Figure b shows the crankshaft 5 from the normal position.
The flange 6b has been rotated by 90 degrees and is in a state where it is expanded to its maximum extent. Then, if the sun visor body 6 is rotated further 90 degrees from this state, a resilient interference fit is performed and the sun visor body 6 is clutched, with the state where the ellipses match again as shown in Figure 4a as a stable point. Lower to the position shown in Figure 2.

The clutch and its release are set to a value higher than the force required to rotate the sun visor body 6 with respect to the crankshaft 5 and the force required to rotate the shaft 3 with respect to the bracket 1, and the user intentionally Unless the crankshaft 5 is rotated, the sun visor body 6
It is designed so that the action of lowering the vehicle is not performed.

Next, FIG. 5 shows another embodiment of the clutch mechanism 4, which includes a pair of unidirectional end face cams 10, 10 provided on the joint end faces of the shaft 3 and crankshaft 5. , a sleeve 11 fitted around the outer periphery of the cam, end plates 12, 12 screwed into openings at both ends of the sleeve 11, and a space between the cam 10 and the end plate 12 on the outer periphery of the crankshaft 5. It consists of an interposed compression coil spring 13.

In the clutch mechanism having such a configuration, the first
To lower the sun visor body 6 from the state shown in the figure, pull the sun visor body 6 in the direction of the arrow to remove the cam 1.
0 and 10 are disengaged from each other, and in this state, the crank lever 5 becomes freely rotatable, and in this state, the sun visor body 6 can be set to the lowered position as shown in FIG.

In this embodiment, the rotational position of the crank lever 5 can be freely set depending on the number of pawls formed on the cam 10.

Furthermore, when the sun visor body 6 is raised again from the lowered position, it can be set to the state shown in FIG. 1 by simply rotating it in the opposite direction.

Furthermore, as for the clutch mechanism, it is of course possible to employ various simple and practical mechanisms other than those exemplified in the above embodiments.

As explained in the embodiments above, the automobile sun visor according to the invention is configured as described above to prevent sunlight from shining into the driver's seat due to sunlight at a low position such as the morning sun or the setting sun. This has the advantage that the sun visor body can be set at a lower position.

[Brief explanation of the drawing]

FIGS. 1 and 2 are perspective views showing the overall structure of an automobile sun visor according to this invention, FIG. 3 is a partial cross-section showing one embodiment of the clutch mechanism, and FIGS. 4 a and b.
3 is a sectional view taken along the line 4--4 in FIG. 3, and FIG. 5 is a partial sectional view showing another embodiment of the clutch mechanism. 1... Bracket, 3... Shaft,
4...Clutch mechanism, 5...Crankshaft, 6...Sun visor body.

Claims (1)

[Scope of utility model registration request] A bracket is fixed to the ceiling surface of an automobile interior, a shaft is rotatably supported at one end by the bracket, and a shaft is disposed coaxially with the other end of the shaft via a clutch mechanism. A sun visor for an automobile comprising an L-shaped crankshaft which can be rotated and stopped, and a sun visor body rotatably held at the other end of the crankshaft.