JPH0824950A - Repairing tool of recessed part for sheeting - Google Patents

Abstract

PURPOSE:To quickly and simply repair an automobile body, etc., developing recessed part without detaching the coating in a low cost by using a repairing tool of the recessed part for sheeting, composed of thermoplastic resin and provided with a locking hole for pull-out tool almost at the center part and having plural adhesive part projections in the radiating state at the outer peripheral part. CONSTITUTION:The recessed part of the automobile body is heated with hot blast without detaching the coating. One in plural adhesive part projections 12 composed of the thermoplastic resin of the repairing tool of the recessed part for sheeting is pressed and stuck to the recessed part and this part is returned back to the room temp. by cold blasting, etc., to weld the adhesive part projection part 12 to the recessed part. Under this condition, a hook-like locking part 10a at the tip part of a slide hammer is inserted into a reinforcing ring 13, and at the time of giving the tensile impact force by rapidly sliding the hammer part to the rear part, the recessed part of the body, etc., is pulled and repaired. Since the hook-like locking part 10a at the tip part of the slide hammer is locked to the reinforcing ring 13 at the center part, the resin is not broken or the hammer is not detached. The removal of the resin is easily executed after repairing because the adhesive area is narrow.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sheet metal recess repairing tool for recovering an original smooth surface when a recess is formed in a car body, a cabinet or other various cases due to a contact accident or the like.

[0002]

2. Description of the Related Art Taking an automobile as an example, a large-scale damage caused by a major accident has recently replaced the components in its vicinity. But for small depressions,
When disassembling and knocking out the recess from the inside to the outside,
As a method to save the complicated and troublesome assembling after disassembly and repair, a metal body implant such as a washer ring or a slice is used.
Weld (e.g., No. 3-40407 No. Kaikai) into the recess and lock the tip of the hammer that can give a tensile impact force called a slide hammer into the locking hole provided in the metal body and slide it on the pull shaft. A method of rapidly moving the hammer from the front to the rear by arm force to apply a tensile force to the metal body to restore the original smooth surface is practiced.

To weld a metal body such as a washer ring or a piece to an automobile body, first the paint of the body is peeled off with a sander or the like to expose the metal surface, and the metal body is welded to the recess by electric welding. Also, after applying a tensile force to the metal body to restore the original smooth surface, after twisting the metal body to remove it from the body, after smoothing the welded part, toning to the surrounding color, It had to be painted.

[0004] In recent years, instead of using a metal body, a sheet metal recess repairing tool having a metal locking ring portion 3 at the end of a rod-shaped thermoplastic resin 2 has been used. ing. An example of this is shown in Fig. 4, in which the concave portion 1a of the automobile body 1 is warmed in advance with hot air, the rod-shaped thermoplastic resin 2 is pressed and welded to that portion, and rapidly cooled with cold air or water to return to normal temperature. After that, the hook-shaped locking portion 10a at the tip of the conventional slide hammer 10 described above is locked, and the hammer portion 10b is abruptly slid to apply a tensile impact force for restoration.

[0005]

This repair tool is useful in that it is not necessary to peel off the paint on the automobile body, but when a tensile impact force is applied by a slide hammer, the repair tool will lose heat. There is a problem that the adhesive portion between the plastic resin 2 and the metal locking ring portion 3 is peeled off or cut. There is also an example in which a pull pipe is externally inserted to the rod-shaped thermoplastic resin 2 and a pull hole for locking the hook-shaped locking portion 10a at the tip of the slide hammer 10 is provided therein. May come out.

In the present invention, a thermoplastic resin having good workability is used in the same manner, but it is not damaged even if a tensile impact force is applied by a pulling tool such as a slide hammer, and further,
An object of the present invention is to provide a sheet metal recess repairing tool that can be reused multiple times.

[0007]

SUMMARY OF THE INVENTION The present invention is made of a thermoplastic resin, has a drawer locking hole 11 substantially in the center thereof, and has a plurality of adhesive projections 12 radially on the outer peripheral portion for repairing recesses for sheet metal. It is tool 10. The term "thermoplastic resin" as used herein means a synthetic resin that is solid at room temperature, but becomes a molten state when heated so that it can be bonded to the other party, and when it is returned to room temperature, it remains solid in a bonded state, such as ethylene-acetic acid. Examples thereof include vinyl copolymers, ethylene / vinyl acetate-vinyl chloride graft polymerization resins, acrylonitrile / styrene copolymer resins, and ionomer resins. These are appropriately selected and used depending on the type of coating of the bonding partner.

The above-mentioned adhesive protrusions are radially 3 or 5 around the periphery.
It is preferable that an individual number, that is, an odd number is formed. Also,
It is preferable that the protrusion 12 of the adhesive portion is thinner toward the tip than the base portion, and further, the reinforcing ring 13 made of metal is provided in the drawer engaging hole 11.
By providing the above, a reinforcing effect can be obtained when a tensile impact force is applied by a pulling tool such as a slide hammer.

[0009]

[Function] One of the plural protrusions 12 of the above-mentioned adhesive portion made of the thermoplastic resin of the recess repairing tool for sheet metal of the present invention is simply applied to the recess 1a of the automobile body 1 by warming it with hot air without removing the coating. Is pressed and welded, and when the temperature is returned to room temperature by cold air or the like, it is welded to the recess 1a. Cooling is fast because the adhesive protrusion has a tapered shape. In this state, the hook-shaped locking portion 10a at the tip of the slide hammer 10 is locked, and the hammer portion 10b is suddenly slid rearward to apply a tensile impact force, so that the concave portion such as the body is pulled and repaired. However, even in that case, since the hook-shaped locking portion 10a at the tip of the slide hammer 10 is locked in the reinforced hole at the center, the resin is not damaged or separated from the hammer. Since it is tough and has a small adhesion area, it is easy to remove the resin from the body or the like after repair.

Adhesive portion projections 12 are 3 or 5 at equal intervals around the periphery.
In the case of a structure in which individual pieces, that is, odd-numbered pieces, are formed, when one of them is used for adhesion, there is a portion without an adhesion part protrusion on the opposite side, so the slide hammer 10
The hook-shaped locking portion 10a at the tip does not get in the way, which improves usability.

[0011]

1 (a) and 2 are plan views of an embodiment of a recess repairing tool for sheet metal according to the present invention, in which FIG. 1 shows an example in which five adhesive protrusions 12 are radially provided. 2 is an example in which three adhesive protrusions are provided. These are made of a thermoplastic resin and have a drawer locking hole 11 at the center thereof. A reinforcing ring 13 formed by cutting a metal pipe into a predetermined length is provided in the hole 11. The thermoplastic resin in this example is an ethylene-vinyl acetate copolymer with a softening temperature of 92 ° C.

FIG. 3 shows a usage state of the recess repair tool for sheet metal. The concave portion 1a of the automobile body 1 is warmed in advance with hot air until the thermoplastic resin is melted, and one of the adhesive resin protrusions 12 of the thermoplastic resin of the sheet metal concave portion repairing tool of the present invention is pressed against the warm concave portion 1a to be welded. . When this is returned to room temperature with cold air or cold water, it is welded to the recess 1a. In this state, the hook-shaped locking portion 10a at the tip of the slide hammer 10 is locked as a pulling tool, and the hammer portion 10b is rapidly slid backward to give a tensile impact force. It is restored to the original flat surface.

[0013]

EFFECTS OF THE INVENTION According to the present invention, it is possible to repair automobile bodies, cabinets, and other various cases having dents by a quick and simple operation without removing the coating, and at the same time, damage or peeling is possible. It is now possible to provide a stable recess repair tool that does not cause an accident. It can be used repeatedly and can be manufactured at low cost.

[Brief description of drawings]

1A is a plan view of an embodiment of a recess repairing tool for sheet metal according to the present invention, and FIG. 1B is a sectional view taken along line AA in FIG.

FIG. 2 is a plan view of another embodiment of the recess repair tool for sheet metal according to the present invention.

FIG. 3 is a plan view showing a state where a repair work is being performed using the present invention.

FIG. 4 is a plan view of a conventional product.

[Explanation of symbols]

 1 Car Body 1a Recess 10 Slide Hammer 10a Hook-shaped Locking Part 10b Hammer Part 11 Drawer Locking Hole 12 Adhesive Protrusion 13 Reinforcement Ring

Claims (2)

[Claims] 1. A recess repairing tool for sheet metal, which is made of a thermoplastic resin, is provided with a drawer locking hole at substantially the center thereof, and has a plurality of adhesive projections radially on its outer periphery. 2. A recess repair tool for sheet metal, comprising 3 or 5 adhesive protrusions according to claim 1 formed around the periphery.