JPH08257639A - Method and tool for repairing automobile sheet metal - Google Patents

Abstract

PURPOSE: To provide a sheet metal repairing method where the force to a surface to be repaired is easily adjusted, and appropriate force can be applied, and no deformation is made to a part unnecessary to repair. CONSTITUTION: A hook 5 is locked to an embossing piece 120 connected to a cave-in part 101 of a vehicle body by using an automobile sheet metal repairing tool capable of positioning the hook 5 which is provided with a guide cylinder 2 which is commonly used as a handle and integratedly fixed to an operation lever 11 having a plate-shaped abutting piece 17 at the lower end, and provided on a screw rod 4 which is freely inserted in the guide cylinder, and the operation lever 11 is turned in the direction of the arrow X to allow only the cave-in part 101 to be bulged and to prevent a groove from being deformed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sheet metal repairing method for repairing a depression of a vehicle body surface and a tool used in this method.

[0002]

2. Description of the Related Art For example, a door surface 10 of an automobile due to an accident or the like.
When 0 is depressed, as shown in FIG. 5, first, the launching direction is determined according to the condition of the depressed portion 101, and the coated surface is removed along the ejection direction, and the transparent portion is cut in the central portion. The peripheral portions of the perforated circular plates 110, 110, ... Having holes are integrally fixed by welding. The pitch intervals for fixing the perforated circular plates 110 are arranged in line in accordance with the intervals of the comb-tooth bodies described later.

Next, a perforated disk 1 provided upright in the depressed portion 101.
The metal fittings 120 are connected to 10, ... As shown in FIG. The driving metal fitting 120 has a shaft 122 that traverses a notch 121 provided at the upper end of a metal plate having a thickness of about 20 to 30 mm.
Thus, the connecting ring 123 is movably attached, and the rectangular parallelepiped notches 124 are provided at appropriate pitch intervals along the lower end edge, so that the comb teeth 125, ... One connecting piece 127, 127, ... Having a hole (not shown) is inserted into each notch 124, and a shaft 126 penetrating the comb tooth body 125 is used to penetrate the connecting piece 127 ,. It consists of one that is rotatably suspended through a hole.

The punching metal fitting 120 and the perforated disc 110 are connected by the lower through hole of the connecting piece 127 and the through hole 11 of the perforated disc.
1 and 1 by inserting the connecting rod 130. In this way, when the repair surface of the vehicle body and the hammer 120 are connected, the slide hammer 14 is attached to the connecting ring 123.
The tip of the hook 141 of 0 is inserted and hooked. The operator grasps the handle 142 of the slide hammer with one hand,
With the other hand, a hammer block 145 loosely fitted to the straight shaft portion 143 connecting the handle 142 and the hook 141 is struck on the collision flange 144 at the upper end of the straight shaft portion to gradually bulge the recess 101. When this work is completed, the punching metal fitting is removed, the perforated disk is cut off, and then the overexposed portion is molded with a normal hammer or the like, putty processing is performed, and painting is performed to complete the repair.

[0005]

[Problem] In such a conventional repair method, the impact force of the hammer block 145 is transmitted to the recess 101 through the metal fitting 120 to swell the recess 101. However, if the impact force is too strong, the plate surface will expand and the plate surface will bulge more than necessary, and it will take a long time to hit it with a hammer to make it flat. In addition, a ridge (bead) or a groove 105 is press-molded on a door or a bonnet for the purpose of design or for the purpose of strengthening the plate surface. With the launching work, these beads and grooves, which are located near the recess, bulge and deform together, and there is a drawback in that it takes extra effort to restore these deformed parts. there were.

[0006]

SUMMARY OF THE INVENTION A first object of the present invention is to disclose an automobile sheet metal repair method capable of easily adjusting a force applied to a repair surface and performing an appropriate bulging process, and a tool used for this method. Especially. A second object of the present invention is to disclose a sheet metal repair tool that does not cause unnecessary deformation in a portion that does not require repair processing.

[0007]

According to the first aspect of the present invention, when a recessed portion of a vehicle body surface of an automobile is bulged, it has a contact piece for contacting the vehicle body surface at one end and is connected to the vehicle body surface to be bulged. Using an operating lever having a locking portion to be locked to the launching metal fitting, abutting against the vehicle body surface with the end edge of the abutting piece as a fulcrum,
In the automobile sheet metal repair method, the locking portion is locked to the driving metal fitting, and the operating lever is swung about a fulcrum to bulge the recessed portion.

The impact force of a conventional hammer can change its magnitude only in a stepwise manner. In other words, it is a digital force application method. Unlike, the force can be continuously and finely changed, so to speak, it is possible to apply an analog force, and the lever can be used to perform optimal bulging of the depression with a very light force. Of course, when there is a risk that the paint on the vehicle body surface will be damaged by the contact piece, the contact piece is brought into contact with the vehicle body surface via the contact plate.

A second gist of the present invention is that an operating lever having an abutting piece on the vehicle body surface at one end is provided with a hook for engaging with a launching metal fitting connected to the vehicle body surface to be subjected to sheet metal repair processing.
In an automobile sheet metal repair tool provided so as to be movable and fixable along the operation lever, the contact piece can be moved and fixed to an end portion of the operation lever in a direction substantially orthogonal to the extending direction of the operation lever. An automobile sheet metal repairing tool characterized by being attached to.

In the sheet metal repair tool according to the second aspect, the contact piece is applied to the vicinity of the recessed portion of the vehicle body to position the hook provided on the operation lever at an appropriate position, and then the hook is driven. Hang it on the connecting ring of 120, and twist the operating lever around the contact piece,
A force is applied to the recessed portion by the hook to pull it upwards through the hammer, and the recessed portion is bulged and deformed. At that time, the force is increased or decreased depending on the positional relationship between the fulcrum, the hook, and the handle of the operating lever. There is no. Since the contact piece presses the vehicle body surface downward as a fulcrum of the operation lever, the expansion force does not work in the vicinity of the contact place of the contact piece, so that unnecessary deformation can be prevented.

Particularly, when there is a ridge or a stepped portion on the vehicle body surface to which the abutting piece should come into contact, and the abutting piece must be applied to avoid such a portion, the abutting piece extends the operating lever. By being able to move in a direction substantially orthogonal to the direction, it is possible to avoid the ridges or the like that do not want to be deformed, and bring the contact piece into contact with the vehicle body surface for repair processing. As an example of a structure that can be freely moved and fixed in a substantially orthogonal direction,
A mounting plate having fixing holes formed at appropriate pitch intervals is fixedly provided at the end portion of the operation lever, and the contact piece is attached to the mounting plate through a through hole formed in the corresponding contact piece. It suffices if it is detachably fixed with screws.

Further, as an example of the structure in which the hook as the locking portion is provided so as to be movable and fixed with respect to the operation lever, the hook is formed by forming a bent portion at the lower end of the screw rod. The threaded rod is loosely inserted in the guide portion provided on the operation lever, and the positioning nut screwed into the screw rod comes into contact with the guide portion from above so that the hook is positioned on the operation lever. Alternatively, the hook may be formed by forming a hook-shaped bent portion at the lower end of the threaded rod, and the threaded rod is loosely inserted in the guide portion provided on the operation lever and screwed onto the threaded rod. The positioning nut may be brought into contact with the guide portion from above to position the hook on the operation lever.

Further, the shape of the vehicle body surface requiring repair is
There are various types of contact pieces, and a variety of shapes of contact pieces are required to deal with these various repair surfaces. Workability is improved by attaching and detaching these various types of contact pieces to and from the operating lever via the connecting member. To do this,
The connecting member provided at the lower end of the operation lever may be detachably attached to the operation lever.

[0014]

Embodiment 1 FIG. 1 shows a first sheet metal repair tool according to the present invention.
The method of the present application will be described below with reference to examples and using this instrument. Near the upper end of the operating lever 1 made of a metal rod, a guide tube 2 as a guide is integrally welded near the lower end so as to extend the operating lever 1 upward. . A mounting plate 6 is fixedly attached to the lower end of the operating lever 1 so as to connect the contact piece 7 in a fixed and movable manner. The mounting plate 6 is a frame-shaped plate whose upper edge is integrally coupled to the operation lever 1 and has a U-shaped cross section, and has a pair of through holes formed therein, through which the fixing bolts 6a, 6a penetrate. Consists of.

A threaded rod 4 having an externally threaded portion 4a formed in the upper half thereof is inserted into the guide tube 2, and the lower end of the threaded rod is bent like a hook to serve as a locking portion. The hook 5 is formed. A positioning nut 3 is screwed into the male screw portion 4a, and the height of the hook 5 is defined by the nut 3 coming into contact with the upper end 2a of the guide cylinder. The abutting piece 7 is a horizontally long rectangular metal plate body, and has a lower end cross section that is a rounded abutting portion 7a. The abutting piece 7 extends in the direction orthogonal to the extending direction of the operation lever 1 along the vicinity of the upper edge portion. Fixing bolt 6a,
A plurality of through holes 7b, ... Are bored at a constant pitch interval according to the interval between 6a. The contact plate 7 is inserted between the grooves of the mounting plate 6 to position it in a desired state, and fixing bolts 6b and 6b are inserted into the mounting plate 6 through the through holes 7b and fixed.

[0016]

[Embodiment 2] FIG. 3 shows an example in which the contact piece and the operating lever are detachable by a connecting member. Example 1
The same members as those of 1 are denoted by the same reference numerals, and description thereof will be omitted. The operation lever 11 has a plate shape, and a connecting member 12 formed of a rectangular tube through which a fixing bolt hole 13 penetrates is integrally fixed to the lower end of the operation lever 11. On the other hand, the plate-shaped contact piece 17 is
Example 1 is a horizontally long plate body whose cross-sectional shape is bent in a V shape.
Similar to the case above, there are many through holes (not shown) near the upper edge.
And is attached to the fixing plate 6 so as to be movable and fixed in the lateral direction by attaching and detaching the fixing bolt 6a. A prismatic connecting rod 8 is provided so as to project upward from the center of the upper edge of the fixing plate, and the connecting rod 8 is connected to the connecting member 12.
The contact piece is detachable by being fitted into and fixed by the fixing bolt 13.

[0017]

The method of using the sheet metal repair tool of Examples 1 and 2 is as follows.
This will be described with reference to FIG. First, similarly to the conventional method, the perforated discs 110 are arranged in a row in the depression 101, and the punching metal fittings 120 are connected thereto. Next, the depressed portion 101 to be stamped and formed.
, The lower ends 7a, 17a of the contact pieces 7, 17 are brought into contact with the groove 105, the height of the hook 5 is adjusted by turning the positioning nut 3, and the operating lever is moved. The height is set so that the recess 101 swells in a desired direction when is pulled in the direction of arrow X.

Connecting the hook 5 to the fitting ring 120 of the metal fitting 120
When the guide cylinder 2 which also serves as a handle of the operating lever is pulled by an appropriate force with the lower end of the contact piece as a fulcrum, the recess 101 bulges, but the groove 105 Since it is pressed downward by the contact piece, the depression does not deform. When operating by grasping the upper part of the guide tube, the force acting on the hook can be adjusted depending on the grasping position, so that the optimum force can be exerted on the recessed portion,
Machining can be performed with much finer operating force than with a slide hammer. A bent one such as the contact piece 17 is convenient to use when the groove 105 and the recess 101 are extremely close to each other, and the hook pulling direction is more vertical than that of a non-bent one. It has the effect of approaching.

In particular, in FIG. 5, when the portion to be bulged, such as the depressed portion 106, is close to the door frame 107 and the handle 109, which are higher than the vehicle body surface 108, the contact pieces 7, 17 are provided. However, it is necessary to avoid these parts protruding from the vehicle body surface and bring them into contact with each other. In that case, as shown in FIG.
If the abutting plate 7 or 17 is attached to the mounting plate 6 so as to be offset, it is possible to perform repair processing while avoiding these protruding portions. In addition, in the said 1st-2nd Example, although the contact piece illustrated the metal plate, this may use the material softer than metal, such as a plastic plate.

[0020]

Third Embodiment FIG. 4 shows a third embodiment of the present invention. The operation lever 31 is composed of a screw rod, and the handle 30 is provided at the upper end, and the same connecting member 36 as that in the second embodiment is provided at the lower end. A tubular body 32 is fitted to the operation lever 31 so as to be vertically movable,
The hook 32 is attached to the bearing portion 32 a protruding from the cylindrical body 32.
Is pivotally supported at its upper end and is swingably supported. A female thread ring 33 is screwed onto the lower side of the cylindrical body 32 in the male screw portion 34, and the height of the hook 35 is determined by bringing the cylindrical body 32 into contact with the female thread ring from above.

The contact piece 37 is fixed by a screw 38b to a mounting plate 38 made of a single plate provided at the lower end of the connecting rod 38a.
The contact plate 3b is composed of a vertical plate composed of a horizontally long rectangular plate, and a contact plate 37b composed of a horizontal plate intersecting with the vertical plate.
It is swingably connected to the lower end of 7 via a hinge 39. The contact plate 37 has the same structure as the contact plate 7 of the first embodiment.
A large number of through holes (not shown) are arranged in a row in the lateral direction.
The backing plate 37b is provided with a rubber plate 37c bonded to the lower surface that is a contact surface with the vehicle body for the purpose of preventing slippage and not damaging the vehicle body.

The sheet metal repair tool according to the third embodiment is used in the same manner as in the first and second embodiments by positioning the hook by determining the height of the female screw ring 33.
However, since the contact piece 37 contacts the vehicle body surface via the contact plate, it does not damage the vehicle body. Further, in the third embodiment, if the hook 35 is directly attached to the female screw ring 33, the cylindrical body 32 becomes unnecessary.

[0023]

[Effect] In the automobile sheet metal repair method and repair tool according to the present invention, since the force applied to the repair surface is adjusted by the action of the lever, as in the conventional slide hammer,
There is no mistake that unreasonably large force is applied and the repair surface is deformed more than necessary. Further, the presence of the abutting piece suppresses bulging deformation more than necessary, and in particular, it is possible to prevent the concave stripes and the convex stripes provided on the vehicle body surface from being deformed, so that the strength of the vehicle body surface is improved. It does not impair the repair work, and the efficiency of repair work can be greatly improved. Since the contact piece can be attached by sliding laterally with respect to the operation lever, it is possible to deal with special circumstances of the shape of the depression.

[Brief description of drawings]

FIG. 1 is an explanatory diagram showing a first embodiment of the present invention.

2 is a cross-sectional view taken along the line AA of FIG.

FIG. 3 is an explanatory diagram showing a usage state of a second embodiment of the present invention.

FIG. 4 is an explanatory view showing a third embodiment of the present invention.

FIG. 5 is an explanatory diagram showing a pretreatment of the sheet metal repair work.

FIG. 6 is an explanatory diagram showing an example of a conventional sheet metal repair work.

[Explanation of symbols]

 1, 11, 31 Operating levers 2, 32, Guide tube 3 Positioning nut 4, Screw rod 5, 35 Hook 6, 12 Connecting member 7, 17, 37 Abutting piece 100 Car body surface 101, 106 Cavity 110 120 launch metal fittings 123 connecting ring 140 slide hammer

Claims (6)

[Claims] 1. When bulging a depressed portion of a vehicle body surface of an automobile, a member to be engaged with the vehicle body surface to be subjected to the bulging treatment, which has a contact piece to the vehicle body surface at one end, is to be engaged with the metal fitting. Using an operation lever having a stop, the end edge of the abutment piece is brought into contact with the vehicle body surface as a fulcrum, the engaging portion is engaged with the hammer, and the operation lever is swung about the fulcrum. A method of repairing a sheet metal of an automobile, characterized in that the recessed portion is bulged by doing so. 2. The automobile sheet metal repair method according to claim 1, wherein the contact piece is in contact with the vehicle body surface via the contact plate. 3. An operation lever having an abutting piece for contacting a vehicle body surface at one end, and a hook for engaging with a driving metal fitting connected to the vehicle body surface to be subjected to sheet metal repair processing is moved along the operation lever. In an automobile sheet metal repair tool that is fixedly provided, the abutting piece is attached to an end portion of the operation lever so as to be movable and fixed in a direction substantially orthogonal to the extending direction of the operation lever. An automobile sheet metal repair tool. 4. An operation lever having an abutment piece for contacting a vehicle body surface at one end, and a hook for engaging with a driving metal fitting connected to the vehicle body surface to be subjected to sheet metal repair processing is moved along the operation lever. In an automobile sheet metal repair tool that is fixedly provided, a mounting plate having fixing holes formed at appropriate pitch intervals is fixed to the operation lever end, and the abutting piece is attached to the mounting plate. An automobile sheet metal repair tool, which is detachably fixed by screws through a through hole formed in the contact piece. 5. The automobile sheet metal repair tool according to claim 3, wherein a contact plate is provided at an end edge of the contact piece so as to be swingable with respect to the contact piece. 6. A positioning nut, wherein the hook comprises a threaded rod with a bent portion formed at a lower end thereof, the threaded rod being loosely inserted into a guide portion provided on an operating lever, and the threaded rod being screwed into the positioning nut. The vehicle sheet metal repair tool according to any one of claims 3 to 5, wherein the hook is positioned on the operation lever by contacting the guide portion from above.