JPS6343010A - Fixing structure of two body - Google Patents

Abstract

(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] <Industrial Application Field> The present invention provides a two-object fixing structure in which the attached member is fixed to the attached member using a push-in expansion type rivet in which the pushing member is a self-tapping screw. Regarding.

<Conventional technology> Conventional examples of the above type of fixing structure are shown in FIGS. 4-6.

The case where a synthetic resin ornament (mounted as a member) 3 arranged below the headlamp 1 of a car is fixed to a headlamp housing sheet metal (hereinafter simply referred to as sheet metal; the mounted member is a member) 5 is shown as an example. However, it is not limited to this.

The ornament 3 is mounted on a seat plate 7 that protrudes outward on both sides.
．． Each mounting seat plate 7 has a screw hole 7a through which a tapping screw 9 is inserted. This screw hole 7a has an oval shape to absorb errors when attaching the metal plate 5 and the ornament 3.

The rivet 11 is attached to a base portion 13 in which a pilot hole 13a corresponding to the screw hole 7a of the seat plate 7 is formed.
, and a self-tapping screw 9 protruding from the lower surface of the base portion 13.
It consists of a pair of legs is and ts that expand by screwing in. Specifically, as shown in FIGS. 5 and 6, the leg portion 15
．． 15 is tapered, and the outer periphery of the cross section has a shape in which U-shapes face each other so as to form a rectangle, and the inner periphery of the cross section has circular arcs facing each other so as to form a circle with the same diameter as the pilot hole 13a. Furthermore, the longitudinal intermediate portion of the outer surface of each leg portion 15 has an engaging protrusion 1 so as to form an engaging stepped portion.
5a is formed. The rivet 11 is usually obtained by injection molding from a synthetic resin material such as nylon or boliacetal.

The sheet metal 5 has a rectangular mounting hole 17 of a size that allows the expanded leg 15.15 of the rivet 11 to be inserted, but does not allow the expanded leg 15.15 to be inserted. Mounting is provided corresponding to the seat plate 7.

The fixing method is that the rivet 11 is attached to the hole 17.
Temporarily hold the rivet 11 on the sheet metal 5 by fitting the legs 15.
The tapping screws 9 are screwed into the rivets 11 through the screw holes 7a of the seat plate 7, and the leg portions 15.15 are expanded so that they cannot be removed from the holes 17. . Note that the tapping screw 9 used has a seat.

<Problems to be Solved by the Invention> However, it is necessary to perform the screwing operation of the above-mentioned tapping screw while holding the ornament 3 by hand, and in particular, when starting the screwing operation, it is necessary to hold the ornament 3 by hand. Tapping screw 9
．． It was necessary to hold three screwdrivers (not shown) by hand at the same time, and the workability could not be said to be good.

Means for Solving the Problems The inventors of the present invention made extensive efforts in development to solve the above problems, and as a result, they came up with a two-object fixing structure having the following configuration.

The legs of the push-expandable rivet, whose pushing member is a self-tapping screw, are inserted into the hole formed in the member, and the push-expandable rivet is fitted into the member. For installation, the seat plate with screw holes protruding from the side of the member is superimposed on the base of the rivet, and the self-tapping screws are screwed into the rivet through the screw holes in the seat plate, and the legs are screwed into the rivet. In a two-object fastening structure in which the mounted object is expanded so as not to come out of the hole, and the mounted member is fixed to the mounted member, an engaging hook portion is formed on the base of the rivet, and the rivet is The mounting feature is that the member can be temporarily held on the seat plate.

<Example> In order to better understand the present invention, the present invention will be described below with reference to Examples. Parts that are the same as those in the conventional example are designated by the same reference numerals, and a portion of their explanation will be omitted.

1 and 2 show a case where a synthetic resin ornament 3 disposed below an automobile headlamp 1 is fixed to a sheet metal 5, similar to the conventional example described above.

When the ornament 3 is attached, engagement protrusions 21, 21 are formed on both protruding sides (upper and lower in the figure) of the seat plate 7 from the free end side to the middle.

For the above-mentioned installation, locking hook portions 23, 23 are formed on both sides (top and bottom in the illustrated example) of the base portion 13 of the rivet 11 from one end side, corresponding to the engagement protrusions 21, 21 of the seat plate 7. .

Although it is not necessary, the engaging claw portion 25 is provided on the side opposite to the side where the engaging hook portion 23 is formed in the base portion 13 of the rivet, and the recessed portion 27 is provided on the base of the back side of the seat plate 7 for ornament attachment. each formed.

The manner of fixing is achieved by slidingly engaging the engaging hooks 23, 23 of the base portion 13 of the rivet 11 with the engaging protrusions 21, 21 of the seat plate 7 from the free end side, and attaching the ornament 3.
After temporarily holding the rivet 11 on the seat plate 7 (the seat plate 7 is overlapped with the base part 13), the leg part 15.15 of the rivet 11 is inserted into the hole 17 to attach the sheet metal 5. The ornament 3 is inserted and temporarily held on the metal plate 5 together with the rivet 11. In this state, the tapping screw 9 is screwed into the rivet 11 through the screw hole 7a of the seat plate 7. Then, the legs 15.15 are expanded, and the attached member of the metal plate 5 cannot be removed from the hole 17, and the ornament 3 is fixed to the metal plate 5.

Since it is not necessary to hold the ornament 3 during the above-mentioned screwing operation, the fixing work efficiency is improved. In addition, in this embodiment, when the rivet 11 is mounted and held on the seat plate 7,
The engaging claw part 25 engages with the recessed part 27, and the rivet 11
rivet 1 is prevented from sliding toward the free end side.
1 to the mounting seat plate 7 becomes more reliable.

In the above embodiment, the engaging hook portions 23 are formed on the top and bottom of the base portion 13, but if the rivet 11 can be attached and temporarily held on the seat plate 7, the engaging hook portions 23 may be formed only on the upper side, as shown in FIG. As shown in FIG. 2, an engaging hook portion 23 may be formed on one end side to clamp the free end side of the seat plate 7 in a spring-elastic manner.

When attaching a member to a member, it is not necessary to apply the above fixing structure to all the fixing parts, and it is of course possible to use other fixing means such as screws and clips in combination.

<Operations and Effects of the Invention> As described above, the two-object fixing structure of the present invention is a structure in which the attached member is fixed to the member using a push-in expansion type rivet using a tapping screw as a pushing means. , an engaging hook is formed on the base of the rivet, and the rivet protrudes to the side of the member during installation.Since the rivet is temporarily held on the seat plate, the rivet is temporarily held on the seat plate during installation. Then, the leg of the rivet can be fitted into the hole 17 of the rivet, and the tapping screw can be screwed into the rivet while the member is temporarily held on the rivet and the member. Therefore, when screwing in the tapping screw, there is no need to hold the mounting member by hand from the start of the work, and the workability of the fixing work is greatly improved.

[Brief explanation of the drawing]

FIG. 1 is an exploded perspective view showing an example of the two-object fixing structure of the present invention, FIG. 2 is a perspective view of the rivet used in FIG. 1, and FIG. 3 is a perspective view of the rivet used in the fixing structure of the present invention. FIG. 4 is an exploded perspective view showing an example of a conventional two-object fixing structure, FIG. 5 is a cross-sectional view of the leg of the rivet, and FIG. FIG. 3- Ornament (mounted as a member), 5-- Headlamp housing sheet metal (mounted as a member), 7-- Mounted on seat plate, 7a- Screw hole, 9- Tapping screw, 11- Rivet, 13- Base part, 15.- Leg portion, 15.- Mounted hole, 23.- Engagement hook portion.

Claims (1)

[Claims] The legs of a push-expandable rivet whose pushing member is a tatsu pin screw are inserted into the attachment hole formed in the attachment target member, and the synthetic resin rivet is fitted into the attachment target member. a mounting seat plate that protrudes to the side of the mounting member and has a screw hole formed therein is superimposed on the base portion of the rivet, and the tuft pin screw is inserted through the screw hole of the mounting seat plate;
In the two-object fixing structure, the base portion of the rivet is screwed into the rivet, the leg portion is expanded so that it cannot be removed from the attaching hole, and the attaching member is fixed to the attaching member. A fixing structure for two objects, characterized in that an engaging hook portion is formed on the rivet, and the rivet can be temporarily held on the mounting seat plate.