JPS6321930Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] This invention relates to a tool for repairing dents in the body of an automobile with sheet metal.

[Conventional technology]

The conventional means for repairing sheet metal parts to repair dents in the body of an automobile is to peel off the inner lining of a door, etc., and hammer out the dented portion from the inner surface. Another method is to use a slide hammer to guide the hammer into the inner surface of the recessed portion from the outside.

[Problem that the invention attempts to solve]

However, the former method has the problem that the work is complicated because the inner lining and the like must be removed, and various parts get in the way, making it impossible to hammer it out sufficiently with a hammer.

The latter method has the problem of not being able to guide the hammer to the desired position due to the various parts inside the recess, and the problem that the striking surface is narrow and the striking surface is very localized, which tends to cause unevenness on the striking surface. be.
If there are many irregularities, a lot of time will be spent on post-processing such as correcting distortions and repairing with putty.

[Purpose of invention]

With the above points in mind, this invention aims to improve work efficiency by pulling out recesses in the body of an automobile from the outside to carry out sheet metal repairs.

[Means to achieve the purpose]

In order to achieve the above object, in this invention, a plurality of holes are formed in parallel in the front surface of the flat rectangular parallelepiped frame that is supported immovably, extending in the longitudinal direction of the front surface from the front surface to the rear. In this structure, slide rods connected to the sheet metal repair section were inserted so as to be non-rotatable but retractable, and each slide rod had a threaded rod screwed through the rear wall of the frame.

[Effect]

The tool constructed in this way first faces the front side of the sheet metal repair section, then connects the required number of slide rods along the repair section using various means, and then rotates the connected slide rods to rotate the threaded rod. By this,
Insert the required amount into the hole and pull out the repaired part to form the required shape. After this, the repair part and the slide rod are disconnected, and the process moves on to post-processes such as correcting distortions and applying putty.

〔Example〕

Hereinafter, embodiments of this invention will be described based on the accompanying drawings.

As shown in FIGS. 1 to 3, a plurality of holes 2 are formed in a flat rectangular parallelepiped-shaped frame 1 in two stages, upper and lower, extending horizontally from the front to the rear, and a slide rod 3 can be inserted into and retracted from each hole 2. is inserted into. A threaded rod 4 screwed through the rear wall of the frame 1 is screwed into the slide rod 3, and by turning the threaded rod 4, the slide rod 3 is moved out and out of the hole 2. A scale 5 is provided on the upper surface of the slide rod 3 so that the amount of protrusion can be measured.

A hook 6 is provided at the tip of the slide rod 3,
This hook 6 is locked to a metal fitting a of the repair section. For example, the metal fitting a described in Japanese Utility Model Application Publication No. 59-140019 is used, and as shown in FIG.
The hook 6 is locked in the hole 7' between the notches 7.
The metal fittings a are joined by pivot welding or the like along the repaired portion p, as shown in FIG. Therefore, when the metal fitting a is pulled out, the repaired portion (indentation) p is also pulled out.

The frame 1 is supported by downwardly movable columns 8 on the floor. As shown in FIG. 2, the column 8 is provided with a movable body 11 that can be moved by rollers 9 and fixed at a predetermined position by screws 10, and a horizontal support rod 12 is protruded from the front of this movable body 11. ing. Support rod 12
A support pipe 13 is inserted into the support pipe 13 so as to be removable and rotatable, and the pipe 13 is fixed at an arbitrary position by screws 14.

At the tip of the pipe 13, the lower end of a support plate 15 provided on the front lower surface of the frame 1 is rotatably supported, and at the rear of the frame 1, a screw shaft 16 that can swing in the front and back direction is attached to the pipe. 13 holes 17
is inserted. This screw shaft 16 is a nut shaft 19
The tip protrusion 19' of the nut shaft 19 is rotatably fitted into the support ring 18 having a U-shaped cross section. Both sides of the support ring 18 are rotatably supported by pieces 18' that protrude downward on both sides of the hole 17 of the pipe 13, and by turning the nut shaft 19, the nut shaft 1
9, the screw shaft 16 moves back and forth, and the frame 1 swings about the fulcrum of the support plate 15 from the state shown in FIG. 2 to the state shown in FIG. 4, for example. Changes in the axial direction of the screw shaft 16 due to its forward and backward movement are handled by rotation of the support ring 18.

Two ropes 20 are secured to the upper ends of the pillars 8, and these ropes 20 are secured to hooks 21 at both ends of the frame 1, and then to locking tools 22 fixed immovably on the floor. The tension of the rope 20 makes the frame 1 immobile via the support column 8.

The embodiment is configured as described above, and its operation will be explained next.

First, as shown in FIG. 5, the metal fitting a is welded and the frame 1 is positioned along the repaired portion p of the automobile A. Next, pull out the slide rod 3 and lock each hook 6 in the hole 7' of the metal fitting a,
Turn the threaded rod 4 to move the slide rod 3 backward and pull out the repaired part p. This operation is performed over the entire repair portion p. Pull out the entire surface of the dent to its original state. After pulling out the entire surface of the recess, the metal fitting a is peeled off, and post-processes such as distortion correction and putty correction are performed in the same way as in the past.

[Effect of idea]

Since this invention is constructed as described above, it has the following effects.

Since it can be pulled out gently over the entire area to be repaired, there is less distortion in the repaired area and less unevenness, and the work time for post-process distortion correction and putty correction is minimized.

Since the work is done from the outside, the workability is good,
This also leads to a reduction in work time.

It is also easy to set up the most advanced line in sheet metal work.

[Brief explanation of drawings]

Fig. 1 is a perspective view of an embodiment of the drawing tool of this invention, Fig. 2 is a cutaway view of the main part of Fig. 1, Fig. 3 is a sectional view taken along the line X--X of Fig. 2, and Fig. 4 is a cross-sectional view of the drawing tool of the present invention. FIG. 2 shows a state in which the frame is oscillated, and FIGS. 5 and 6 are a perspective view and a partial front view for explaining the operation of the above embodiment. 1... Frame, 3... Slide rod, 4... Threaded rod, 6... Hook, 8... Support, a... Metal fittings,
p...Repair part.

Claims (1)

[Scope of utility model registration request] A plurality of holes 2 are formed in parallel in the front surface of a flat rectangular parallelepiped frame 1 that is supported immovably, running from the front surface to the rear in the longitudinal direction of the front surface, and each hole 2 has a slide connected to the sheet metal repair section. This pull-out tool for automobile sheet metal repair is constructed by inserting rods 3 in a non-rotatable but retractable manner, and screwing into each slide rod 3 a threaded rod 4 which is screwed through the rear wall of a frame 1.