JPH021526Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field of the Invention> The present invention relates to a plastic fastener, for example a fastener for fixing a radiator grill of a motor vehicle to a radiator panel.

<Prior art> (Fig. 4) Conventionally, in order to install the radiator grill 1 of an automobile, as shown in Fig. 4, the radiator grill 1 is
The engagement protrusion 2 provided at the bottom of the lower skirt 3
hole 4 of the radiator grille 1 through the cover 5, align the hole 7 of the mounting piece 6 provided on the upper part of the radiator grille 1 with the mounting hole 9 of the upper radiator panel 8, and insert plastic into both holes 7 and 9. The screw grommet 1 is inserted by inserting the fastener 12 consisting of the screw grommet 10 and the tapping screw 11 made of
0 base part 10b is located in both holes 7 and 9, and the tapping screw 11 is inserted into the screw grommet 10.
The screw grommet 10 is rotated inward and screwed in, and the lower expanded portion 10c of the base portion 10b that is connected to the flange portion 10a of the screw grommet 10 is expanded to create a gap between the flange portion 10a and the expanded portion 10c of the screw grommet 10. The mounting pieces 6 of the radiator panel 8 and the radiator grille 1 are sandwiched between the radiator panel 8 and the radiator grille 1, thereby fixing the radiator panel 8 and the radiator grille 1 in place.

<Problems to be Solved by the Present Invention> However, in this method, in order to screw in the tapping screw 11, it is necessary to use a screwdriver or an automatic screw-in tool, making the fixing work complicated. In addition, if it is necessary to remove the radiator grill 1 for inspection etc.,
The task of re-rotating the tapping screw 11 in the opposite direction with a screwdriver or automatic tool to remove it is complicated, and since the threaded surfaces formed on the screw grommet 10 and the tapping screw 11 are made of plastic, these It was destroyed during work and could not be reused. In addition, although the base 10b of the screw grommet 10 is located in the holes 7 and 9, there is some horizontal clearance between the holes 7 and 9 and the base 10b, so vibrations when the car is running may cause the radiator grille 1 to There was some wobbling in the mounting surface direction A.

<Purpose of the present invention> The present invention aims to correct the above-mentioned drawbacks and provide a fastener that is easy to fix, easy to remove, can be reused, and prevents wobbling in the direction of the mounting surface. The purpose is

<Embodiment of the present invention> (Figs. 1 to 3) Hereinafter, an embodiment of the present invention will be described based on the drawings.

1 to 3 show an embodiment of the present invention.

This fastener consists of an outer cylinder 20 and an insert 29, both of which are integrally molded of plastic.

The cylindrical portion 21 of the outer cylindrical body 20 has an outer shape slightly smaller than the hole 7 of the radiator grille 1 and the mounting hole 9 of the radiator panel 8, and has a substantially rectangular hollow portion 22 with a substantially rectangular cross section and is open at both ends. It has a hollow cylindrical shape, and a flange portion 23 is provided at one end thereof to protrude in the horizontal direction (in FIG. 3).
Recesses 23a, 23 are provided on the upper surface of both ends of the flange portion 23.
b is provided.

A tapered portion 24 is provided on the outer surface of the other end of the cylindrical portion 21 to facilitate insertion into the mounting hole.

The flange portion 23 and the upper half of the cylinder portion 21 are
Cuts 25a and 25b are provided on both sides of the cylindrical portion 21 to open at the flange portion 23 from approximately the center of the cylindrical portion 21, so that the flange portion 23 and the upper half of the cylindrical portion 21 are perpendicular to the axial direction. It is now expandable.

Moreover, the cuts 25a and 25b of the cylindrical portion 21
The widened portion 2 is formed by substantially U-shaped slits 26a and 26b in both side walls 21a and 21b, which are divided by
7a and 27b are provided. Expanded portion 27a,
The lower portion of 27b is provided with protrusions 28a and 28b that protrude inwardly into a tapered shape.

Reference numeral 29 denotes an insert body, which includes a rod body 30 and a flange portion 31 vertically protruding from one end of the rod body in the axial direction.
It is made up of.

Reference numeral 30 denotes a rod integrally molded from plastic that is inserted into the hollow portion 22 of the outer cylinder 20 from the flange portion 23 side.

A flange portion 31 is provided at one end of the rod 30 to protrude in the horizontal direction. The rod 30 has a columnar shape with a rectangular cross section that is slightly smaller than the hollow portion 22 of the cylindrical portion 21, and both side walls 30a and 30b of the rod 30 include
On the flange portion 31 side, the side wall 21 of the cylinder portion 21
Large diameter portions 32a and 32b are formed with dimensions slightly larger than the distance between the inner walls of portions a and 21b.
Further, tapered portions 33a, 33b are formed on both side walls 30a, 30b at the other end of the rod 30. Further, rod bodies 30 are provided on the side walls 30a and 30b.
On both sides of the substantially center in the length direction, the cylindrical portion 2
Retainers 34a, 34a and 34b, 34b, which are inserted into the first slits 26a, 26b, are provided in a protruding manner. The retainers 34a and 34b have a substantially triangular plate shape with tapered portions 34a' and 34b' on the lower side.

<Operation of the above embodiment> First, as shown in FIG. 3a, the rod 30 is inserted into the hollow portion 22 of the outer cylinder 20 from the flange portion 23 side. At this time, since the retainers 34a and 34b protrude from both sides of the rod 30, the retainers 34a and 34b
The tapered parts 34a' and 34b' of the flange part 23 come into contact with the edge of the hollow part 22 of the flange part 23, but when pushed strongly, the upper half of the outer cylindrical body 20 is cut 25.
Since it is divided into two by a and 25b, it is elastically deformed and opens left and right. And the retainer 34a,
When the retainers 34b reach the slits 26a, 26b, the retainers 34a, 34b fit into the slits 26a, 26b, as shown in FIG.
The upper half of the body returns elastically.

In this way, with the rod 30 inserted and connected to the outer cylinder 20, the matching mounting hole 9 of the radiator panel 8 and the hole 7 of the mounting piece 6 of the radiator grille 1 are connected.
and insert it as shown in Figure 3b. Then, when the flange portion 31 is pushed and the rod 30 is pushed in, the tapered portions 33a and 33b at the tip end on the cylindrical portion 21.
Projecting portions 28a, 28b of expanded portions 27a, 27b of
The expanded portions 27a and 27b are gradually pushed open left and right by elastic deformation, as shown in FIG. 3c. When pushed further, the upper half of the outer cylinder 20 divided into two by the large diameter parts 32a and 32b and the flange part 23 are pushed open in the axial direction and perpendicular direction. In this way, as shown in FIG. 3d, the expanded portion 27 of the outer cylinder 20 is
a, 27b are pushed open, and the radiator grill 1
The radiator panel 8 is sandwiched between the flange portion 23 and the widened portions 27a and 27b of the outer cylinder body 20, and the upper half of the outer cylinder body 20 and the flange portion 23 are pushed open to open the hole in the radiator grille 1. 7 and the inner wall of the mounting hole 9 of the radiator panel 8 are in strong contact. In this way, the mounting piece 6 of the radiator grille 1 is firmly fixed to the radiator panel 8.

Therefore, in order to remove the radiator grille, from the state shown in FIG.
When you insert your fingertips or a screwdriver into the recesses 23a, 23b and pry up the flange portion 31 of the rod 30, the retainers 34a, 34b will snap into the slits 26a, 23b.
26b is reached, and the enlarged parts 27a, 27b, the upper half of the outer cylinder part 20, and the flange part 23 elastically return to the state shown in FIG. 3b. From this state, the connected outer cylinder body 20 and rod body 30 can be removed from the holes 7 and 9.

Although the embodiments of the present invention have been described above, the present invention is not limited to the above embodiments, and it goes without saying that various modifications can be made in the configuration of each part.

<Effects of the present invention> As described above, since the fastener of the present invention is constructed, (a) there is no need to screw in unlike the conventional tapping screw, and it is only necessary to push the rod 30; Fixing work becomes significantly easier.

(b) In addition, when removing the rod 30, all you have to do is insert your fingertips or the tip of a screwdriver into the recesses 23a and 23b on the top surface of the flange portion 23 and pry up the rod 30, which makes the work easy and allows for reuse. can.

(C) When the rod 30 is pushed in, the flange 23 of the outer cylinder 20 and the upper half of the cylinder 21 expand in the direction perpendicular to the axial direction and strongly abut against the inner walls of the holes 7 and 9, which is different from conventional methods. This eliminates rattling in the direction of the mounting surface.

Therefore, when used for attaching a radiator grill to a radiator panel of an automobile that vibrates violently, it is extremely effective because no rattling occurs.

[Brief explanation of drawings]

Fig. 1 is a perspective view showing one embodiment of the present invention in a state before connection, Fig. 2 is a perspective view of the invention in a broken state, and Fig. 3 is a perspective view showing an embodiment of the present invention in a state before connection.
The figure is a cross-sectional view showing the state in which the rod is being used. Figures a, b, and c show the rod in the middle of insertion, and d shows the rod in the completed state. FIG. 4 is a sectional view showing a conventional mounting state of the radiator grill. 1...Radiator grill, 6...Mounting piece, 7...
...hole, 8...radiator panel, 9...mounting hole,
10... Screw grommet, 11... Tapping screw, 12... Fastener, 20... Outer cylindrical body, 21... Cylinder part, 22... Hollow part, 23... Flange part, 25a, 25b ...cut, 26
a, 26b...slit, 27a, 27b...expanded part, 28a, 28b...protrusion part, 29...insert body, 30...rod body, 31...flange part, 32
a, 32b...Large diameter part, 33a, 33b...Tapered part, 34a, 34b...Removal prevention.

Claims (1)

[Claims for Utility Model Registration] A flange portion 23 protruding in a direction perpendicular to the axial direction is provided at one end of the cylindrical portion 21 with both axial ends open, and recesses 23a and 23b are provided at the upper edge of the flange portion 23. from the middle part of the cylindrical part 21 to both sides so as to open at the flange part 23, so that the upper half part of the cylindrical part 21 and the flange part 23 can be expanded in the direction perpendicular to the axial direction. slits 25a, 25b are provided, and slits 26a, 26b are provided in the middle part of the cylindrical portion 21.
Expanding portion 27 is formed to be expandable outwardly by and has protrusions 28a and 28b that protrude inwardly.
a, 27b; and: a rod 30 inserted into the hollow portion 22 of the outer cylinder 20 is provided with a flange portion 31 protruding perpendicularly to the axial direction at one end in the axial direction; The insert body 29 is provided with large diameter parts 32a and 32b having an outer diameter larger than the inner diameter of the hollow part 22 of the flange part 23 of the outer cylinder body 20 on the flange part 31 side of the body 30. The rod body 30 of the body 29 is attached to the outer cylinder body 20.
The insert body 2 is inserted into the hollow part 22 of the cylindrical part 21 of
When the flange 31 of 9 reaches the flange 23 of the outer cylinder 20, the rod 30 presses the protruding parts 28a, 28b of the expanded parts 27a, 27b of the outer cylinder 20. Expanded part 2
7a, 27b expand outward, and the large diameter portions 32a, 32b of the rod 30 are fitted into the cylindrical portion 21, and the flange portions 23 and 27 of the outer cylindrical body 20 are opened by the cuts 25a, 25b. A fastener characterized in that the upper half of the cylindrical portion 21 is expanded in a direction perpendicular to the axial direction.