JPH0674418U - Vehicle sun visor - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide a vehicle sun visor in which breakage of a resin arm does not occur outside the sun visor bracket. [Structure] When a tensile stress, a compressive stress, a shearing stress, a bending moment, or the like acts on the resin arm 4 of the sun visor 1 by shock, stress concentration occurs in the variable cross-sectional area portion provided with the annular groove 8, and the resin arm 4 is broken. Since the annular groove 8 is located inside the bearing pipe shaft portion 15 of the sun visor bracket 12, the broken portion remains inside the sun visor bracket 12 and is not exposed inside the vehicle compartment.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a vehicle sun visor.

[0002]

[Prior art]

 The arm of the vehicle sun visor should be made of resin from the viewpoints of weight reduction, corrosion resistance, and external appearance, or because it is easy to manufacture in a shape that improves the moderation when the sun visor body rotates. Has been adopted.

[0003]

[Problems to be solved by the device]

 However, if impact stress acts on the resin arm and breaks outside the sun visor bracket, there is a problem that the broken part is exposed inside the vehicle compartment. The present invention has been made to solve the above problems, and an object of the present invention is to provide a vehicle sun visor in which breakage of the arm does not occur outside the visor bracket.

[0004]

[Means for Solving the Problems]

 As a concrete means for achieving the above object, a weakened portion which is broken by the action of impact stress is formed on the vertical axis of an L-shaped bent resin arm, and the sun visor body is rotatable on the horizontal axis. A sun visor for a vehicle, characterized in that the fragile portion is positioned inside the bearing pipe shaft portion by being inserted into the bearing pipe shaft portion of a sun visor bracket that holds and holds the vertical axis portion in the vehicle compartment. Will be provided.

[0005]

[Action]

 According to the vehicle sun visor configured as described above, when impact stress is applied to the resin arm, the resin arm breaks at the fragile portion located inside the bearing pipe shaft of the sun visor bracket. Not exposed.

[0006]

【Example】

 An embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a front view of a sun visor 1 according to the present invention, in which a middle portion of a sun visor body 2 is cut and omitted. 2 is an enlarged cross-sectional view of a main part, and FIG. 3 is an enlarged cross-sectional view showing a broken state of the resin arm 4. A lateral shaft portion 5 of an L-shaped resin arm (hereinafter simply referred to as an arm) 4 is rotatably inserted into and supported by a shaft insertion portion 3 provided in the sun visor body 2. The vertical axis portion 6 of the arm 4 is formed with an annular groove 8, a taper portion 9, a reduced diameter portion 10, and a locking head portion 11 in this order from the L-shaped bent portion 7 toward the tip. The annular groove 8 is an example of a fragile portion against impact stress according to the present invention.

The sun visor bracket 12 screwed to the mounting portion of the vehicle compartment roof has a flat mounting base portion 13 provided with a screw hole 14 and a bearing pipe shaft portion 15 integrally formed. The tip portion of the bearing tube shaft portion 15 is divided into four to form a locking portion 16, and a locking projection 17 is formed on the inner diameter side of the locking portion 16. A taper portion 18 having the same slope as the taper portion 9 of the longitudinal axis portion 6 of the arm 4 is formed on the inner circumference of the bearing tube shaft portion 15.

When the vertical axis portion 6 of the arm 4 is fitted into the bearing tube shaft portion 15 of the sun visor bracket 12, the locking head portion 11 first locks the locking projection portion 17 of the locking portion 16. It is pushed out and protrudes from the tip of the bearing tube shaft portion 15. The locking projection 17 engages with the stepped portion of the reduced diameter portion 10 and cannot be removed. At this time, the annular groove 8 is located in the bearing pipe shaft portion 15.

When the tensile stress, the compressive stress, the shear stress, the bending moment, or the like is shocked, the arm 4 of the sun visor 1 having the above-described structure exerts a stress concentration on the variable cross-sectional area portion provided with the annular groove 8. It will break. Since the annular groove 8 is located in the bearing pipe shaft portion 15, the broken portion 8a remains inside the sun visor bracket 12 and is not exposed inside the vehicle compartment. The dimensions of the fragile portion such as the groove width and the groove depth of the annular groove 8 are determined in consideration of the material of the arm 4, the outer diameter, the required strength of use and the like. Although the annular groove 8 is provided as an example of the fragile portion against impact stress, the fragile portion can be formed by penetrating the lateral hole in the other arm or providing a notch or the like.

[0010]

[Effect of device]

 According to the present invention, as described above, the fragile portion which is broken by the action of impact stress is formed on the vertical axis of the L-shaped bent arm, and the horizontal axis holds the sun visor body rotatably. The vertical axis part is inserted into the bearing tube shaft part of the sun visor bracket that fixes it in the passenger compartment, and the weakened part is located inside the bearing tube shaft part, and impact stress acts on the arm. Then, the fragile part located in the bearing pipe shaft part of the sun visor bracket is broken, and the broken part is not exposed to the inside of the vehicle, which is extremely advantageous as a vehicle sun visor for which safety is strongly required. is there.

[Brief description of drawings]

FIG. 1 is a front view of a sun visor according to the present invention, in which a middle portion of a sun visor body is cut and omitted.

FIG. 2 is an enlarged cross-sectional view of a main part.

FIG. 3 is an enlarged cross-sectional view showing a broken state of the arm.

[Explanation of symbols]

1 ... Vehicle sun visor, 2 ... Sun visor body,
4 ... arm, 5 ... horizontal axis part, 6 ... vertical axis part,
7 ... L-shaped bent portion, 8 ... annular groove (weakened portion), 12 ...
Sun visor bracket, 15 ... Bearing tube shaft.

Claims (1)

[Scope of utility model registration request] 1. An L-shaped bent resin arm is provided with a fragile portion that breaks due to the action of impact stress on the vertical axis, and the horizontal axis holds the sun visor body rotatably. A sun visor for a vehicle, characterized in that the fragile portion is located in the bearing pipe shaft portion by being fitted into the bearing pipe shaft portion of a sun visor bracket for fixing the portion inside the vehicle compartment.