JPH11210731A - Push nut and attaching method for vehicular side visor adopting the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily attach a vehicular side visor by the use of a push nut im proved in structure without danger to injure a driver's body even if the driver contacts it. SOLUTION: A lug 12 of a side visor 10 having a projection 10 thereinside is temporarily held onto a door frame 9 by a double coated tape 13, etc. A frame sandwiching portion 7 of an attaching fitting 6 which is prepared by bending a steel plate to be substantially U-character form is attached to an end of the door frame. The projection of the side visor is inserted into a hole 8 on the opposite side. In order to fix the side visor, next, a push nut 1 is used which is prepared by bending a steel plate into a semi-circular form composed of a flat surface 2 and a curved covering portion 3. The covering portion 3 is pressed to the extend that the flat surface butts against the attaching fitting. A hole 4 formed on the flat surface is fitted around the projection. Engagement pieces 5 taperedly extended from the inner peripheral surface are elastically engaged with the projection. Certain and easy attachment/fixing is thus attained.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a push nut and a method for mounting an automobile side visor using the push nut.

[0002]

2. Description of the Related Art Conventionally, a push nut is often used as a means for connecting two kinds of parts. As this type of push nut, for example, there is a structure disclosed in Japanese Utility Model Laid-Open No. 5-6209. That is, this publication discloses a structure in which a stud protruding from the molding is inserted into a hole formed in the vehicle body panel and attached to the vehicle body with a push nut when the vehicle molding is mounted on the vehicle body panel. As shown in FIG. 3, the push nut has a hole 15 formed in the center of a metal disk 14 and a plurality of engagement pieces 16 formed around the hole 15 at an angle.

On the other hand, a side visor is often mounted on a window frame of an automobile so as to prevent rain from entering a room even as a sunshade or when a window glass is slightly opened. Usually, this kind of side visor is formed of resin and is attached to a metal door frame by various methods.

[0004] As such a method, for example, a method of bonding using an adhesive or a double-sided tape, a method of caulking using a rivet, an eyelet or the like are known. A method is also known in which a mounting bracket having a hole is applied to a resin side visor, and a joined body is applied from the opposite side of the hole and ultrasonically heated and welded (Japanese Patent Publication No. 5-79220).

[0005] That is, this gazette (Mochiho 5-7922)
No. 0), as a fixing structure for a side visor, a resin joint having a large number of pyramid-shaped projections formed on a joint surface is held by a metal fitting having a through hole, and the joint surface is applied to the side visor. A structure is disclosed in which an ultrasonic wave is applied while holding the joined body and the side visor between sound poles while applying pressure, and the joined surfaces are welded and integrated.

[0006]

SUMMARY OF THE INVENTION The above publication (Japanese Utility Model Application Laid-Open No.
No. 6209) is usually pushed into a projection such as a stud using a dedicated holder or a tool such as a hand press. This is because the above-described device is necessary because the engaging piece protrudes from the pressing surface, and directly pressing it with a finger has a safety problem. Also, if the parts are fixed using such push nuts, the engaging pieces and projections will be exposed, so if a part of the body hits it, there is a risk of injury and this is also safe. This is undesirable.

The above publication (Japanese Patent Publication No. 5-79220)
In the disclosed side visor, a specially shaped joint having a large number of pyramid-shaped protrusions on the joining surface is required, and an ultrasonic heater is required for joining, and further, the joined body is a side visor. There is a problem that the side visor cannot be positioned with respect to the joined body because it is joined to the flat portion.

The present invention solves such a problem, and provides a safe push nut which is free from injuries even if the body comes into contact with it, and uses this push nut to attach a side visor to a vehicle body panel. It is intended to provide a simple and positioned mounting method.

[0009]

According to the push nut of the present invention, a single steel plate is bent to form a flat portion and a covering portion covering the flat portion at a predetermined interval, and an opening is formed in the flat portion. And a plurality of radial engaging pieces are formed around the opening, and the engaging pieces are bent toward the covering portion side and inclined.

In such a configuration, when fixing the push nut to a projection or the like formed on the mating component,
The opening is applied to a projection or the like, and the covering portion is pressed with a finger.

The push nut is used for attaching a side visor to a door frame of an automobile.

In such a configuration, after the push nut is attached, the opening and the engagement piece of the push nut are covered with the covering portion, and even if a finger, a hand, or the like comes into contact with the cover, it is not damaged.

The method of mounting the side visor for a vehicle, when mounting the side visor on a door frame of the vehicle, includes a mounting bracket having a frame holding portion for holding the door frame and a hole fitted to a projection provided on the side visor. After attaching to the door frame and fitting the projection of the side visor into the hole, push the push nut into the projection, and fix the mounting bracket to the projection with the push nut.
The side visor is attached to the door frame. In such a method, the fixing and positioning of the side visor are performed simultaneously by inserting the push nut into the projection formed on the side visor.

Further, in the method of mounting the side visor for an automobile, an adhesive is interposed in the door frame contact surface of the side visor, and fixing means is added by bonding. With this structure, the attachment of the side visor to the vehicle body panel is made more reliable.

[0015]

Embodiments of the present invention will be described below with reference to the drawings.

In FIGS. 1 and 2, reference numeral 1 denotes a push nut formed by stamping a single rectangular steel plate, for example, a cold-rolled steel plate or a spring steel plate, and bending a substantially central portion thereof. 2 has a curved covering portion 3. More specifically, the covering portion 3 is curved in a substantially semicircular shape, and the tip thereof is in contact with the end of the flat portion 2. The covering portion 3 needs to be formed at a certain interval from the flat portion 2, and the shape can be a trapezoid other than the above-mentioned circular shape.

Reference numeral 4 denotes a hole formed substantially at the center of the plane portion 2.
A plurality of engaging pieces 5 are formed radially around the periphery,
The engagement piece 5 is bent toward the cover 3 and is inclined. The covering portion 3 is spaced apart from the hole 4 of the flat portion 2 by a predetermined distance.

As an example of the dimensions of the push nut 1, a steel plate is 14 mm long and 48 m wide before bending.
m, thickness 0.3 mm can be used, dimensions after bending, length 14 mm, width 20 mm, diameter of hole 4 5 mm (inner diameter of hole formed by engagement piece 5), number of engagement pieces 5 4
The length in the circumferential direction can be 1.5 mm, the width can be 1 mm, the inclination angle with respect to the plane portion 2 can be 20 degrees, and the distance from the hole 4 to the covering portion 3 can be 6 mm.

Reference numeral 6 denotes a mounting bracket which is formed by bending a rectangular flat plate-shaped steel plate and has a frame holding portion 7 formed of a U-shaped bent portion and a hole 8 formed in the flat plate portion. As an example of the dimensions of the mounting bracket 8, a rectangular steel plate having a length of 30 mm, a width of 15 mm, a thickness of 0.3 mm, a length of the frame holding portion of 10 mm, an inner space of 2 mm, and a diameter of the hole 4 of 6 mm can be obtained. .

Reference numeral 10 denotes a side visor fixed to the door frame 9 of the automobile, which is made of polymethyl methacrylate (P).
MMA), a resin such as polycarbonate (PC), and the like, and a protrusion 11 is provided inside the side visor 10 and an ear 12 is provided on the upper side. Here, the outer diameter of the projection 11 may be 5.5 mm and the height may be 4 mm. Reference numeral 13 denotes an adhesive layer for bonding the ear 12 of the side visor 10 and the door frame 9, and a double-sided tape or the like is used.

When attaching the side visor 10 to the door frame 9 using the push nut 1, first, the double-sided tape 13 is adhered to the ear 12 of the side visor 10, and is adhered to the door frame 9 while being positioned and temporarily held. I do. Next, the projection 11 of the side visor 10 is inserted into the hole 8 of the mounting bracket 6, and
To hold the door frame 9. Thereafter, the hole 4 of the push nut 1 is applied to the protrusion 11, and the covering portion 3 is pushed with a finger until the flat portion 2 hits the mounting bracket 6. In this case,
On the peripheral surface of the projection 11, a plurality of engagement pieces 5, which are on the inner peripheral edge of the hole 4 of the push nut 1 and project obliquely toward the covering portion 3, are elastically locked, and the push nut 1 Is fixed to the side visor 10, so that the side visor 10 is securely fixed to the door frame 9. Further, when the side visor 10 is fixed with the push nut 1, the mounting projection 11 on the side visor 10 side is covered by the covering portion 3 of the push nut 1 and is not exposed. Also improve.

In order to prevent rattling in fixing the side visor 10 by the push nut 1, the interval between the opening portion of the push nut 1 and the covering portion 3 is set as follows.
It is necessary to set the height larger than the height of the projection 11.

[0023]

According to the present invention, since the push nut is composed of a flat portion having an opening and a covering portion covering the flat portion at a predetermined interval, when the push nut is attached to a part such as a side visor, the covering portion is pushed in. Since the work only needs to be performed, the work can be performed safely without any tools.

According to the present invention, since the opening of the push nut and the engaging piece formed around the push nut and the projection to which the push nut is attached are covered with the covering portion, a part of the body hits the body and is injured. Since there is no fear and the appearance is good, it is suitable for use in fixing a side visor of an automobile.

According to the present invention, when the side visor is mounted on the door frame of the automobile, the frame is clamped by the frame clamping portion using the mounting bracket, and after the projection of the side visor is fitted into the hole, the push nut is inserted. Is pressed into the projection to fix the side visor to the door frame, so that the operation can be performed easily and in a short time.

Further, according to the present invention, since the mounting bracket is formed separately from the side visor, it does not require much care in handling as compared with the case where the mounting bracket is formed integrally with the side visor in advance. There is an advantage. That is, conventionally, there is a type in which a mounting bracket is integrally formed on a side visor in advance, but in such a structure, there is a possibility that the metal fitting portion contacts another side visor or the like at the time of transportation and damages or breaks it. With the above structure, since the side visor is handled as a single unit, there is no possibility that the metal fitting protruding from the side visor will hit other parts.

Further, according to the present invention, an adhesive is applied to the door frame contact surface of the side visor, and the side visor is temporarily held on the door frame while being aligned, and then the side visor is firmly attached to the door frame with the mounting bracket and the push nut. The positioning of the side visor with respect to the door frame is easy. In addition, the presence of the adhesive increases the bonding strength of the side visor, and at the same time, seals the gap between the side visor and the door frame, thereby preventing rainwater from entering.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view showing a case where a side visor is fixed to a door frame with a push nut according to an embodiment of the present invention.

FIG. 2 is a perspective view showing a state where the push nut and the mounting bracket are disassembled.

FIG. 3 is a perspective view showing a typical structure of a conventional push nut.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Push nut 2 Flat part 3 Covering part 4, 8 hole 5 Engagement piece 6 Mounting bracket 7 Frame holding part 9 Door frame 10 Side visor 11 Projection 12 12 Ear part 13 Adhesive layer

Claims (4)

[Claims] 1. A steel plate is bent to form a flat portion and a covering portion covering the flat portion at a predetermined interval, and an opening in the flat portion and a plurality of radial engaging pieces around the opening. Is formed, and the engagement piece is bent toward the covering portion side to be inclined. 2. The push nut according to claim 1, which is used for attaching a side visor to a door frame of an automobile. 3. When mounting a side visor on a door frame of an automobile, a mounting member having a frame holding portion for holding the door frame and a hole fitted to a projection provided on the side visor is mounted on the door frame. After fitting the projection of the side visor into the hole, push the push nut according to claim 1 into the projection, fix the mounting bracket to the projection with the push nut, and then attach the side visor to the door frame. How to attach the side visor. 4. The method for mounting a side visor for an automobile according to claim 3, wherein an adhesive is interposed on the door frame contact surface of the side visor, and fixing means is added by bonding.