JPH0121910Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a heat-sealing crimp device for a retainer for attaching a clip in an automobile interior trim.

As shown in FIGS. 1 and 3, the interior trim 1 of an automobile is composed of a cross-sectional layer in which a skin material 3, a cushion material 4, and a resin base material 5 are integrated in this order. A clip 2 for fastening is provided. This clip 2 has a resin retainer 6
It is installed through. This retainer 6 is
The mounting flange 7 was annularly fused to the resin base material 5 by ultrasonic fusion, as shown in FIG. In this case, the heat during fusion is conducted to the cushion material 4 and the skin material 3, and fusion marks are formed in the form of depressions on the skin material 3 side, resulting in a defective product. In order to carry out ultrasonic welding without producing welding marks on the skin material 3 side, the thickness of the resin base material 5 should be made considerably thick, or the variation in the thickness of the resin base material 5 should be minimized as much as possible. Alternatively, the only methods available are to create a honeycomb shape, or to shorten the ultrasonic transmission time or weaken the par under the ultrasonic welding conditions, but in the former case, the cost of the resin base material 5 is high. Also, interior trim 1
The thickness and weight of the retainer 6 increases, and in the latter case, the bonding force of the retainer 6 decreases, causing the retainer to fall off.

The present invention provides a retainer heating and welding reinforcement device that solves the above-mentioned conventional problems.

The retainer heat-fused according to the present invention is the fourth
As shown in the drawings and FIG. 5, the mounting flange surface 7 of the retainer 6 is bonded to the resin base material 5 of the interior trim 1 by means of radial heat-sealing reinforcements 8.

An embodiment of the present invention will be described below with reference to FIG. 10 is a base plate. A pair of left and right guide shafts 11 are erected on this base plate 10, and a horizontal rod 13 is always biased upwardly by a coil spring 12 on the pair of guide shafts 11.
guide so that it can be raised and lowered. Furthermore, a pressing rod 14 that intersects with the axis in the same direction as the guide shaft 11 is fixedly connected to the horizontal rod 13 at the intersection.
The mounting flange surface 7 of the retainer 6 is attached to the lower end of the retainer 4.
A corresponding annular electric heating bar pusher 15 is fixedly installed.
Reference numeral 16 denotes a heating wire buried within the heating bar pusher 15, and is connected to a power source via a harness (not shown). Furthermore, radial striation protrusions are formed on the lower end surface of the electric heating strut body 15 .

A retainer pressing member 17 is attached to the lower end surface of the pressing rod 14 via a spring 18 in the annular central portion of the electric heating rod pusher 15 so as to protrude from the lower end surface of the electric heating rod pusher 15.

Since the present invention has the above-mentioned structure, the interior trim 1 is placed on the base plate 10 with the resin base material 5 facing upward, and the retainer 6 is placed on the resin base directly under the ascending electric heating bar pusher 15. Set it on the material 5. After that, by pressing down the pressing rod 14, the retainer pressing member 17 is pressed against the retainer 6.
It contacts and presses the top to prevent displacement. Thereafter, the spring 18 is compressed, and the electric heating reinforcement body 15 is brought into contact with the mounting flange surface of the retainer 6, and the mounting flange surface 7 is pressed against the resin base material 5 by radial heat-sealing reinforcement 8 as shown in FIG. It is fused and bonded to the

According to the present invention, the mounting flange surface of the retainer is fused and bonded to the resin base material of the interior trim by radial heat fusion crimp pressing with a simple structure and dry process. Moreover, when pressing the heat-welding wire, the retainer pressing member presses the retainer in advance of the electric-heating wire pushing body, so that the heat-welding wire can be pressed correctly on the mounting flange surface without displacing the retainer. Since the retainer is held down by the retainer pressing member until the electric heating bar pusher is separated from the mounting flange surface after fusion, the electric heating bar pusher can be released without peeling off the mounting flange surface immediately after welding.

Furthermore, according to the present invention, unlike conventional ultrasonic fusion, local fusion is performed using electric heat, so a slight pressing force is used to ensure fusion and bonding, and fusion marks are generated on the epidermis side. Never. Therefore, it is possible to reduce the thickness of the resin base material, which reduces the thickness of the interior trim itself, resulting in weight reduction and cost reduction, and also eliminates the need for outer clips, which improves the design. It has promising advantages.

[Brief explanation of the drawing]

Fig. 1 is a back view of the interior trim, Fig. 2 is a front view of the fastening clip portion of a conventional interior trim, Fig. 3 is a cross-sectional view taken along the line shown in Fig. 2, and Fig. 4 is a fusion using the present device. FIG. 5 is a sectional view taken along the line of FIG. 4, and FIG. 6 is a perspective view of the device of the present invention. DESCRIPTION OF SYMBOLS 1...Interior trim, 2...Clip, 3...Skin material, 4...Cushion material, 5...Resin base material, 6
...Retainer, 7...Mounting flange surface, 8...Heat fusion reinforcement, 10...Base plate, 11...
...Guide shaft, 12...Coil spring, 13...
...Horizontal rod, 14... Pressing rod, 15... Electric heating bar pushing body, 17... Retainer pressing member, 18... Spring.

Claims (1)

[Scope of utility model registration request] The mounting flange surface of the resin retainer of the fixing clip is pressed by heating and welding on the resin base material of the interior trim. A horizontal rod that is always biased in the upward direction is guided so as to be movable up and down, and a pressing rod that intersects with the axis in the same direction as the guide shaft is fixedly connected to the horizontal rod at the intersection, and the pressing rod is An annular electric heating bar pusher is fixedly attached to the lower end portion of the retainer, and a retainer pressing member is attached to the annular central portion of the electric heating bar pusher via a spring on the lower end surface of the electric heating bar pusher. A heat-sealing crimp device for a retainer for attaching a clip in an automobile interior trim, characterized in that the press rod is attached to the lower end surface of the press rod so as to protrude further.