JP3763892B2 - Bearing structure of vehicle sun visor - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a bearing structure for a vehicle sun visor.
[0002]
[Prior art]
Conventionally, in order to lock and hold the sun visor body rotatably mounted on the horizontal shaft portion of the support shaft at the storage position along the ceiling surface of the passenger compartment, as shown in FIGS. A synthetic resin bearing member 121 is provided with a notch 124 that exposes the outer peripheral surface of the horizontal shaft portion 104 of the support shaft 102 that is fitted into the bearing hole, and is formed below the notch 124. A mounting hole 125 is formed.
A locking clip 131 is attached to the bearing member 121 over the notch 124 and the mounting hole 125.
[0003]
The locking clip 131 has a locking surface 133 detachably engaged with the flat surface 105 formed on the outer peripheral surface of the horizontal shaft portion 104, and a locking cylinder having one end opened to be elastically expandable. And a pair of leg pieces 134 and 135 that extend from both ends of the opening of the locking cylinder portion 132 and are inserted into the mounting hole 125. The pair of leg pieces 134 and 135 are inserted into the attachment holes 125 and restrained by both side surfaces of the attachment holes 125, and the retaining claws 137 formed on the leg pieces 134 and 135 are attached to the attachment holes 125. The engaging clip 131 is attached to the bearing member 121 by being engaged with 125.
In a state where the locking clip 131 is attached to the bearing member 121, the pair of leg pieces 134 and 135 abuts against both side surfaces of the mounting hole 125 and is restrained, so that the locking cylinder portion 132 is elastically expanded. When necessary, the required spring force is applied to the locking cylinder portion 132.
[0004]
That is, the sun visor body 111 is rotated with a required torque based on the spring force of the locking cylinder portion 132 with respect to the axis of the horizontal shaft portion 104 of the support shaft 102, and the sun visor body 111 is When the storage surface is disposed along the ceiling surface, the locking surface 133 of the locking clip 131 engages with the flat surface 105 of the horizontal shaft portion 104, and the sun visor body 111 is engaged with the storage position based on the engagement force. It is designed to be held.
A bearing structure for a vehicle sun visor having such a structure is disclosed in, for example, Japanese Utility Model Laid-Open No. 60-66523.
[0005]
[Problems to be solved by the invention]
By the way, in the conventional vehicle sun visor bearing structure described above, when the interior of the vehicle becomes hot and the synthetic resin bearing member 121 is softened by the heat, both legs of the locking clip 131 by the mounting hole 125 are provided. The restraining force of the pieces 134 and 135 is reduced, and accordingly, the spring force of the locking cylinder portion 132 of the locking clip 131 is decreased. For this reason, when the sun visor main body 111 is disposed at the storage position along the ceiling surface of the passenger compartment, the engagement surface 133 of the engagement cylinder portion 132 of the engagement clip 131 and the flat surface 105 of the horizontal shaft portion 104 are engaged. The resultant force may be insufficient, or the operation feeling when the sun visor main body 111 is rotated may be deteriorated.
In view of the above-described conventional problems, the object of the present invention is to restrain and hold both leg pieces of the locking clip and apply the required spring force to the locking cylinder even when the bearing member is softened by heat. It is an object to provide a bearing structure for a vehicle sun visor.
[0006]
[Means for Solving the Problems]
In order to achieve the above object, the vehicle sun visor bearing structure according to the first aspect of the present invention includes a synthetic resin bearing member provided in a sun visor main body and an outer periphery of a support shaft that is inserted into the bearing hole. A notch for exposing the surface is formed, and a step-shaped attachment hole with a narrow upper part and a wide lower part is formed in a part located at the lower part of the notch part, and the locking clip extends from the notch part to the attachment hole. The locking clip engages with the support shaft to hold the sun visor body in the retracted position along the ceiling surface of the passenger compartment, and has a locking cylinder portion having one end opened to be elastically expanded. A bearing structure for a vehicle sun visor having a pair of leg pieces extending from both ends of the opening of the locking cylinder and inserted into the mounting hole,
Of the two leg pieces of the locking clip, one leg piece is formed in a folded shape toward the outer surface of the other leg piece to prevent the leg pieces from spreading ,
When both leg pieces of the locking clip are inserted into the step-shaped mounting hole, the tip of the restraining piece of the one leg piece is engaged with the step surface of the mounting hole, so that the restraining piece is prevented from being removed. It has a function.
[0007]
Therefore, of the two leg pieces of the locking clip, the restraint piece extended in a folded shape on one leg piece comes into contact with the outer surface of the other leg piece, thereby preventing the expansion of both leg pieces. Even when the bearing member is softened by heat, a required spring force is applied to the locking cylinder portion of the locking clip.
[0008]
In addition, when both the leg pieces of the locking clip are inserted into the step-shaped mounting hole, the tip of the restraining piece of one leg piece engages the step surface of the mounting hole, so that the restraining piece has a retaining function. is doing.
For this reason, the necessity of forming a retaining claw on the leg piece can be eliminated.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to FIGS.
In FIG. 1, a vehicle sun visor 1 is mainly composed of a support shaft 2 and a sun visor body 11.
The support shaft 2 includes a vertical axis portion 3 and a horizontal axis portion 4 and has a substantially L shape. The vertical axis portion 3 is attached to a front side portion of the vehicle compartment ceiling surface by a mounting bracket 6. A sun visor body 11 is rotatably mounted on the horizontal shaft portion 3 of the shaft 2.
[0010]
The sun visor main body 11 is provided with an annular bone frame 12 along the peripheral edge thereof, and a synthetic resin bearing member 21 is provided fixed to the bone frame 12.
The bearing member 21 includes a bearing tube portion 12 having a bearing hole at a center portion into which the horizontal shaft portion 4 of the support shaft 2 is rotatably fitted, and a leg portion 13 formed at a lower portion of the bearing tube portion 12. And are fixed to the bone frame 12 at the legs 13 thereof.
Further, a notch portion 24 is formed in the bearing tube portion 12 of the bearing member 21 to expose the outer peripheral surface of the horizontal shaft portion 4 fitted in the bearing hole, and the leg portion 23 positioned immediately below the notch portion 24 is formed. A step-shaped attachment hole 25 having a narrow upper portion and a lower lower portion is formed in this portion. A locking clip 31 is attached from the notch 24 of the bearing member 21 to the attachment hole 25.
[0011]
As shown in FIG. 2, the locking clip 31 is made of a spring plate material, has a locking hole into which the horizontal shaft portion 4 is inserted, and has a locking cylinder portion 32 having one end opened so as to be elastically expandable. And a pair of leg pieces 34 and 35 that are extended from both ends of the opening of the locking cylinder portion 32 and are inserted into the attachment holes 25 and attached. Further, the sun visor body 11 is engaged with both sides of the inner peripheral surface of the locking hole of the locking cylinder portion 32 so as to be detachably engaged with the flat surfaces 5 formed on both sides of the outer peripheral surface of the horizontal shaft portion 4. A locking surface 33 is formed to lock and hold the storage position along the ceiling surface of the passenger compartment.
[0012]
Of the leg pieces 34, 35 of the locking clip 32, one leg piece 35 extends in a folded shape toward the outer surface of the other leg piece 34, and the both leg pieces 34, 35 are expanded. A restraining piece 36 for blocking is formed.
Further, as shown in FIG. 1, in a state where both leg pieces 34, 35 are inserted into the mounting hole 25 of the bearing member 21 by a predetermined amount, the front end surface of the restraining piece 36 is different from the stepped surface of the mounting hole 25. By engaging, it has a retaining function for retaining the retaining clip 31 from the bearing member 21.
[0013]
This embodiment is configured as described above. Therefore, when the sun visor main body 11 is disposed at the retracted position along the ceiling surface of the passenger compartment, the engagement between the both locking surfaces 33 of the locking cylinder portion 32 of the locking clip 31 and both the flat surfaces 5 of the horizontal shaft portion 4. The sun visor body 11 is locked and held in the retracted position by the resultant force.
The sun visor main body 11 in the storage position is arranged at a light shielding position along the windshield by being rotated around the axis of the horizontal shaft portion 4. When the sun visor main body 11 is turned, both locking surfaces 33 of the locking cylinder portion 32 are pressed against the outer peripheral surface of the horizontal shaft portion 4, whereby the locking cylinder portion 32 is elastically expanded.
[0014]
When the locking cylinder portion 32 is elastically expanded, the leg pieces 34 and 35 are restrained by the restraining piece 36, and the leg pieces 34 and 35 are prevented from spreading. For this reason, even when the bearing member 21 is softened by heat, the leg pieces 34 and 35 are not unexpectedly expanded, and a required spring force is applied to the locking cylinder portion 32. The
As a result, a substantially constant frictional force is always applied between the locking cylinder portion 32 and the horizontal shaft portion 4, thereby enabling the sun visor body 11 to be rotated smoothly at a required torque. The operability can be improved.
Furthermore, since the restraint piece 36 extended from one leg piece 35 has a retaining function, the necessity of forming a retaining claw on the leg piece 35 can be eliminated, and the retaining clip 31 can be It can be easily manufactured.
[0015]
【The invention's effect】
As described above, according to the first aspect of the present invention, even when the synthetic resin bearing member is softened by heat, the restraint pieces prevent the leg pieces from spreading, The required spring force can be applied to the locking cylinder portion of the locking clip, and the rotation operability of the sun visor body can be improved.
Further, it is possible to eliminate the necessity of forming a retaining claw on the leg piece of the locking clip, and it is possible to easily form the locking clip.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view showing a bearing structure of a vehicle sun visor according to an embodiment of the present invention.
FIG. 2 is a perspective view showing the same locking clip.
FIG. 3 is a partially cutaway front view of the vehicle sun visor.
FIG. 4 is a sectional view showing a bearing structure of a conventional vehicle sun visor.
FIG. 5 is a perspective view showing the same locking clip.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Vehicle sun visor 2 Support shaft 4 Horizontal shaft part 5 Flat surface 11 Sun visor main body 21 Bearing member 24 Notch part 25 Mounting hole 31 Locking clip 32 Locking cylinder 33 Locking surface 34,35 Leg piece 36 Restraint piece

Claims (1)

A synthetic resin bearing member provided in the sun visor body is formed with a notch for exposing the outer peripheral surface of the support shaft inserted into the bearing hole, and a portion located below the notch In addition, a step-shaped mounting hole is formed with a narrow upper portion and a wide lower portion, and a locking clip is mounted from the notch portion to the mounting hole, and the locking clip engages with the support shaft to mount the sun visor body. A locking cylinder part that is held at a storage position along the ceiling surface of the chamber and that is open at one end so as to be elastically expandable, and extends from both ends of the opening part of the locking cylinder part and is inserted into the mounting hole A vehicle sun visor bearing structure having a pair of leg pieces to be attached,
Of the two leg pieces of the locking clip, one leg piece is formed in a folded shape toward the outer surface of the other leg piece to prevent the leg pieces from spreading ,
When both leg pieces of the locking clip are inserted into the step-shaped mounting hole, the tip of the restraining piece of the one leg piece is engaged with the step surface of the mounting hole, so that the restraining piece is prevented from being removed. A vehicle sun visor bearing structure characterized by having a function.

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