JPH0628334Y2 - Knob structure in automobile sun visor - Google Patents

Description

[Detailed Description of the Invention] << Field of the Invention >> The present invention relates to an automobile sun visor, and more particularly to improvement of a knob detachably fitted to a vehicle body side holder.

<< Prior Art and its Problems >> As is well known, an automobile sun visor has a wire frame bent in a loop shape, and a pad material having cushioning properties laminated on the upper and lower surfaces of the wire frame in a sandwich shape,
Further, the sun visor body is constructed by enclosing the outer periphery thereof with a skin material such as a PVC sheet.

The structure for holding the sun visor body on the vehicle body side is such that, as shown in FIG. 4, one end of a substantially L-shaped metal shaft 2 is rotatably inserted into one side edge of the sun visor body 1, while the shaft is rotated. The other end of 2 is also rotatably inserted in the bracket 3. Thus, one side edge of the sun visor 1 is rotatably supported by the shaft 2, and the other side edge of the sun visor body 1 has a hollow cylindrical knob 4 fitted in a wire frame. The knob 4 is detachably fitted into the fitting hole 5a of the holder 5 attached to the vehicle body side, so that the sun visor body 1 is held securely.

As described above, the sun visor body 1 is supported by the shaft 2 and the knob 4 is fitted into the holder 5, so that both sides of the sun visor body 1 are reliably held, and are affected by vibration during traveling. Without fail, it is reliably positioned and held on the vehicle body.

In the above-mentioned knob 4, a resin pipe has been inserted into a predetermined position of a wire in the past, but recently, as shown in FIG. 5, half cylinders 6 and 7 are used, and a sun visor body is used. After producing 1, the wire is partially exposed, and the half-split cylinders 6 and 7 are butted to the exposed portion to perform ultrasonic welding to form the cylindrical knob 4. There is.

It should be noted that the half cylinders 6 and 7 are respectively formed with a convex portion 7a and a concave portion 6a, and the convex and concave portions of the convex portion 7a and the concave portion 6a are engaged with each other to secure the joint between them and to improve the joint strength. Although the amount is increased, as shown in FIG. 6, during ultrasonic welding, the molten resin leaks from the joint surface to the outside, and a surplus thickness A is generated at the mating portion.

Therefore, the outer shape of the knob 4 is very bad,
In addition, when the knob 4 is attached / detached to / from the fitting hole 5a of the holder 5, a smooth attachment / detachment operation cannot be expected due to the excess thickness A, and especially when the elasticity of the holder 5 cannot be obtained in winter, the operation is performed. The sex becomes worse.

<Purpose of Invention> The present invention has been made in view of the above circumstances. The purpose of the present invention is to improve the appearance of the knob of an automobile sun visor, and to improve the appearance of the knob and attach it to a holder. It is to provide a knob structure in a sun visor that makes the operation extremely smooth.

<< Structure and Effect of Device >> In order to achieve the above object, the present invention is a sun visor in which pad materials are laminated on the upper and lower surfaces of a wire frame bent in a loop shape, and the outer peripheries thereof are covered with a skin material. One end of the main body and the sun visor body is rotatably inserted into the one side edge, and the other end is fixed to the vehicle body side. The shaft that rotatably supports the sun visor body and the wire on the other side edge of the sun visor body A knob that partially exposes the half-cylinders by ultrasonic welding and covers the exposed portion of the wire; and a holder that is provided on the vehicle body side and that detachably holds the knob, A vehicle sun visor configured to hold a sun visor body by a shaft and a knob, wherein a molten resin produced during ultrasonic welding is accommodated in at least one of the joining surfaces of the half-cylindrical body that constitutes the knob. Groove is formed, the concave groove is at the junction of the semi-cylindrical body, by being continuously formed along the inside of the joining line,
It is characterized in that the molten resin is restricted from leaking out from the joining line.

That is, according to the above-mentioned configuration, the groove for accommodating the molten resin generated during ultrasonic welding is formed on the bonding surface of any one of the half cylinders forming the knob. Since it is formed continuously along the inner side, in order to enhance the welding strength of the half cylinders, even if the joint surface is set large, the molten resin should be contained in this groove. As a result, a good appearance can be obtained without the molten resin squeezing out from the joining line of the half cylinders to the outside, and when attaching and detaching this knob to the holder, the extra thickness that has been generated in the past has an adverse effect. Since it is not given, smooth detaching operation can be expected, and operability is improved.

<< Description of Embodiments >> Hereinafter, a knob structure of a sun visor according to the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a perspective view showing the entire structure of a sun visor adopting the knob structure of the present invention, FIG. 2 is a sectional view of the main part of the same, and FIG. 3 is a perspective view showing a half-cylinder body constituting a knob according to the present invention. It is a figure.

First, referring to FIG. 1, the overall structure of the sun visor will be described.

This sun visor includes a wire frame 10 bent in a loop shape, a pad material 11 such as urethane foam laminated on the upper and lower surfaces of the wire frame 10, and a skin such as a PVC sheet or cloth that wraps the outer periphery of the pad material 11. A sun visor body 13 made of a material 12, a shaft 14 for rotatably supporting the sun visor body 13, and a resin holder 1 provided on the opposite side of the shaft 14 and attached to the vehicle body side.
And a knob 16 that is detachably fitted in the housing 5.

More specifically, the shaft 14 is bent in an L shape, and one end 14a thereof is rotatably inserted into the sun visor body 13 and the other end 14b is also rotatably inserted into the bracket 17. ing. Therefore, the shaft 14 is rotatable with respect to the bracket 17 fixed to the vehicle body side, and the sun visor body 1 is attached to the shaft 14.
Since 3 is rotatable, the sun visor body 13 can be rotated vertically and horizontally.

Further, the knob 16 is formed by setting a predetermined portion of the wire frame 10 to be partially exposed, and halved cylindrical bodies are abutted and ultrasonically welded to the exposed portion as described later.

Then, a fitting hole 15a having an outer diameter substantially equal to that of the knob 16 is formed.
By fitting the knob 16 in the holder 15 having the above, both sides of the sun visor body 13 can be held by the shaft 14 and the holder 15, and reliable positioning can be performed.

Next, the structure of the knob 16 will be described with reference to FIG.

The knob 16 is formed by butting the half-cylindrical bodies 18 and 19 together from both sides of the wire 10 and performing ultrasonic welding along the mating surfaces of the two. Therefore, the protrusions 2 are formed on the joint surfaces 20 and 21 of the half cylinders 18 and 19, respectively.
2. A concave portion 23 is formed, and by fitting the convex portion 22 and the concave portion 23 in a concavo-convex manner, the half-cylindrical bodies 18 and 19 can be surely fitted to each other, and a large welding surface can be secured, and the welding strength can be improved. Guaranteed.

Further, in the present application, the concave groove 24 is formed along the outer side of the convex portion 22 in the half-divided cylinder 18 on one side, and when these half-divided cylinders 18 and 19 are ultrasonically welded to each other. The groove 2 is continuously formed along the inner side of the joining line between the two.
With the formation of No. 4, the molten resin is accommodated in the groove 24 (see FIG. 3). Therefore, since the knob 16 can reliably prevent the molten resin from oozing out at the joining portion of the half-cylindrical bodies 18 and 19 during ultrasonic welding, a good appearance can be obtained, and the knob 15 can be attached / detached to / from the holder 15. When doing, the operation can be performed smoothly.

[Brief description of drawings]

FIG. 1 is a partially cutaway overall perspective view showing an automobile sun visor according to the present invention, FIG. 2 is a configuration explanatory view for explaining a knob structure according to the present invention, and FIG. 3 is a sectional view taken along line III-III in FIG. Fig. 4 is an overall perspective view showing a conventional sun visor, Fig. 5 is a perspective view showing the structure of a conventional knob, and Fig. 6 is VI-VI in Fig. 4.
It is a line sectional view. DESCRIPTION OF SYMBOLS 10 ... Wireframe 11 ... Pad material 12 ... Skin material 13 ... Sun visor body 14 ... Shaft 15 ... Holder 16 ... Knob 18, 19 ... Half cylindrical body 20, 21 ... Joining surface 22 ... Convex part 23 ... Recessed part 24 ... Recessed groove A: booth

Claims (1)

[Scope of utility model registration request] 1. A sun visor body in which pad materials are laminated on upper and lower surfaces of a wire frame bent in a loop shape, and outer peripheries thereof are covered with a skin material, and one end is rotated to one side edge of the sun visor body. It is freely inserted, the other end is fixed to the vehicle body side, the shaft that rotatably supports the sun visor body and a part of the wire on the other side edge of the sun visor body are exposed, and the half halves are superposed. Butt by sonic welding,
A knob that covers the exposed part of the wire and is provided on the vehicle body side,
A sun visor for an automobile, comprising: a holder that detachably holds the knob; and a sun visor for an automobile that holds the sun visor main body by the shaft and the knob, in at least one of the joining surfaces of the half-cylindrical body that constitutes the knob. , A groove for containing molten resin generated during ultrasonic welding is formed, and this groove is continuously formed along the inside of the joining line when joining the half-divided cylinders, so that the groove can be formed outside the joining line. A knob structure for an automobile sun visor, characterized in that molten resin is restricted from escaping.