JP4912651B2 - Sheet metal drawer and method for repairing vehicle body panel using the same - Google Patents

Description

  The present invention relates to a sheet metal drawer and a method for repairing a vehicle body panel using the same.

  In recent years, as a method for easily and quickly restoring a dent generated in a metal plate material, for example, an automobile body (vehicle body panel) that has been dented due to an accident, the dent is removed from the outside of the vehicle body panel by using various sheet metal drawers. The method of pulling out is performed. According to such a method, it is possible to perform the repairing process only on the front surface side of the recessed portion without exposing the back surface of the recessed portion to be repaired, and the working time can be greatly shortened.

  Conventionally, as a sheet metal drawing tool (puller) used in such a repair method, generally, a welding tip for welding electrodes (also referred to as a welding tip) is provided at the tip of the rod, or a hook is used as a rod. The thing etc. which were provided in the front-end | tip of are provided.

  Among these, in the drawing tool provided with the welding tip, after welding the welding tip to the recessed portion of the body panel to be repaired, the rod is pulled to relieve the dent, and in the drawing tool provided with the hook, A hook is hooked directly or indirectly on a washer or a perforated pin welded to a sheet metal surface, and the rod is similarly pulled to ease the dent.

  Patent Documents 1 to 4 exist as prior literature on such a sheet metal drawing tool or puller.

  In Patent Document 1 (Japanese Patent Laid-Open No. 7-303920), a grip width adjusting means for adjusting the grip width between the main lever and the second lever is adjusted so that the grip width of the operation means can be adjusted to a grip width suitable for the operator. In this document, it is also proposed that the left and right legs of the leg are made independent and the positions of the left and right legs are moved (Patent Document 1). FIG. 11).

  Further, in Patent Document 2 (Japanese Patent Application Laid-Open No. 10-328739), a sheet metal that can be pulled out easily and appropriately with a weak force by using a lever principle, a depressed portion of a sheet metal such as a car body of an automobile. The repair method of this and the tool of the simple structure used for this are proposed.

  Further, in Patent Document 3 (Japanese Patent Application Laid-Open No. 2004-154855), the adjustment of the protruding amount of the spot welding electrode rod is performed simply, accurately and quickly, and the rotation position of the stand member according to the state of damage of the damaged part. In order to be able to easily and quickly change or replace the spot welding electrode rod, the projection amount adjusting means for adjusting the projection amount of the spot welding electrode rod toward the temporary welding site, and the temporary welding site of the spot welding electrode rod after the temporary welding There has been proposed a puller for repairing a dent in a metal plate material, which includes a lifting amount adjusting means for adjusting a lifting amount in a direction opposite to the direction, and further includes a plurality of types of stand members having different sizes and shapes (Patent Document) Figure 3).

Further, Patent Document 4 (Japanese Patent Laid-Open No. 2002-205115) efficiently dented by preventing excessive drawing of the recessed surface and selectively combining a drawing tool suitable for a construction site with a drawing aid. This relates to a sheet metal drawing device that can pull out a portion. Paragraph No. [0034] of this document describes that a contact surface portion is rotatably supported by a shaft portion at a tip portion of a leg main body. Has been.
JP-A-7-303920 Japanese Patent Laid-Open No. 10-328739 JP 2004-154855 A JP 2002-205115 A

  As described above, a number of sheet metal drawing tools have been proposed in the past, and in Patent Document 1 and Patent Document 3, the size of the stand member member and the left and right leg portions are adjusted according to the size of the recess. There has also been proposed a sheet metal drawing tool capable of adjusting the interval.

  However, these Patent Documents 1 and 3 merely disclose that the stand member and the leg are set in accordance with the “size” of the recess, and the shape of the stand member in accordance with the planar shape of the recess. There is no description or suggestion about changing itself.

  Here, when the dent of the body panel to be repaired is considered again, the planar shape of the dent is various, such as a straight line, a complicated dent in a certain area, or a dent that is slightly curved. It is. And in order to repair the dent which has such a complicated planar shape exactly, it is important to set the installation position and installation shape of a leg part in the drawer | drawing-out operation | work appropriately.

  Therefore, the present invention firstly provides a sheet metal drawer that can freely adjust the shape of the installation surface of the sheet metal drawer relative to the vehicle body panel in accordance with the planar shape of the recess.

  Further, when pulling out the recessed portion of the vehicle body panel, a large amount of force acts on the leg portion (particularly the installation surface with the panel: a seat member) that is the installation surface between the sheet metal drawer and the vehicle body panel due to the reaction. Become. Accordingly, the present invention provides a sheet metal drawing tool having a seat member that can uniformly disperse the reaction force during such a drawing operation.

  Further, since the panel around the pull-out point is also pulled out at the time of pulling out the dent, there is provided a vehicle body panel repair method capable of efficiently pulling out only the intended pull-out point by a desired amount. Is.

  In the sheet metal drawing tool according to the present invention, the abutment member, which is the installation surface of the leg portion with respect to the vehicle body panel, is provided so as to be rotatable with respect to the base frame. This is a sheet metal drawer that is made possible and can secure a space for hammering out the panel.

  That is, in order to solve the above-mentioned problem, the present invention is a sheet metal drawing tool for pulling out a sheet metal surface, and a base frame provided with a leg portion that comes into contact with the sheet metal surface, and is freely movable relative to the base frame. And a shaft provided with a connection tool with a sheet metal surface at the tip, and the leg portion attaches to the base frame at least at the abutting seat member abutting on the sheet metal surface during the pulling operation A sheet metal drawing tool provided with a stand member, and a seat member on the leg portion is rotatably attached to the base frame.

  If the rotation direction of the seat member is a plane perpendicular to the vehicle body panel, it is impossible to freely arrange the seat member. For example, it may rotate in any direction. For example, in addition to rotatably installing in a plane parallel to the panel surface on which the seat member is installed, the rotation direction can be made flexible using a planetary gear or the like. However, in consideration of manufacturability, manufacturing cost, etc., it is desirable to form the seat member so as to rotate in a plane parallel to the panel on which it is installed. And as a connection part which enables rotation of a seat member, the junction part of a stand member and a seat member, the junction part of a stand member and a base frame, or both may be sufficient.

  And it is desirable for the said seat member to be formed in the elongate shape, and to be attached in the position eccentric with respect to the stand member. Regardless of whether the shape is long or curved, the length of the contact surface of the abutment member with the panel is longer than the short length, preferably at least twice, particularly preferably at least three times. It is formed as having a length of Such a long shape naturally includes a rectangle, an ellipse, a water droplet, and the like, and includes a curved shape of these shapes. And the mounting member pattern formed in this elongate shape can change the pattern of the installation shape with respect to a panel in various aspects by attaching to a stand member in positions other than the center.

  Further, it is desirable that the abutting seat member is formed widely at a portion attached to the stand member, and is formed with a narrower width as the distance from the mounting portion is increased. This is because the force toward the panel surface that is generated when the panel is pulled out is transmitted to the abutment member through the stand member, so that it is evenly distributed and the panel surface is not damaged. It is.

  Moreover, it is desirable that the leg portion is configured by combining two or more leg structural units each including a seat member and a stand member. That is, by using the leg structural units that can be moved independently of each other, the pattern of the installation surface with the panel can be widely changed.

  In the sheet metal drawing tool according to the present invention, the stand member is attached to the base frame so as to be movable forward and backward, and at least the axial direction of the stand member relative to the base frame is attached to the stand member attachment portion of the base frame. It is desirable to provide a lock mechanism that prevents movement to the position. By attaching the stand member to the base frame so as to be movable back and forth, the length of the leg portion can be adjusted, and further, by providing a lock mechanism for preventing the stand member from moving in the axial direction with respect to the base frame, Even when a reaction force (force toward the panel surface) is generated during the surface drawing operation, the distance between the panel surface and the sheet metal drawing tool can be kept constant. As such a locking mechanism, a screw or a bolt that meshes with a groove provided around the stand member can be used. And this lock mechanism desirably prevents the movement of the stand member only in the axial direction, and adjusts the screwing amount so that it can freely rotate in the week direction.

  Furthermore, in the sheet metal drawer having the leg structure according to the present invention, the position of the seating member can be freely adjusted, and a desired area can be released. At the same time, it is possible to carry out the drawing work while hitting a portion that protrudes more than necessary with a hammer. Therefore, it is possible to adjust to a flatter surface while performing the drawing work.

  In the sheet metal drawing tool of the present invention, the structure for pulling out the panel surface can be implemented without any particular limitation. For example, even when the member manually pulled to the panel surface is pulled out, compressed air is introduced into the piston. And what pulls out the member joined to the panel surface using the force is also employable. That is, for the configuration other than the above-described leg portion, the structure or configuration employed in a sheet metal drawing tool (puller) that has been known in the past can be used.

  However, the sheet metal drawing tool according to the present invention desirably has a panel surface drawing structure as shown below.

  That is, the shaft is provided so as to be able to move forward and backward with respect to the base frame, the tip is provided with a connector with a sheet metal surface, the operation lever as an operation portion when the shaft is moved backward, and the operation of the operation lever. Accordingly, the sheet metal drawing tool includes a first ratchet mechanism that retracts the shaft in response, and adopts the above-described structure or configuration as the structure of the leg portion.

  Hereinafter, a sheet metal drawing tool having a suitable panel drawing structure will be described in detail.

  The first ratchet mechanism includes a rack provided on the shaft and a ratchet claw that urges the rack in the retracting direction of the shaft by operation of the operation lever. A claw may be provided, the rack may be moved by operating the operation lever, and the ratchet claw provided on the shaft may be formed so as to be urged in the retracting direction of the shaft.

  In addition, the ratchet pawl used in combination with the rack as described above is a spring so that the engagement between the two is not released when the vehicle body panel is pulled out (that is, the shaft is retracted). It is desirable that the elastic member bites into the rack by other elastic members.

  Furthermore, it is preferable that the operating mechanism includes a second ratchet mechanism that prevents the shaft retreated by the first ratchet mechanism from moving forward. This second ratchet mechanism can be composed of a rack provided on the shaft and a ratchet pawl that meshes with the rack regardless of the operation lever. By including such a second ratchet mechanism, the operating lever is operated once to retract the shaft by a predetermined amount, and then the operating lever is retracted again by the previous operation even if the operating lever is returned to the original position again. The position of the shaft can be maintained by this second ratchet mechanism.

  Therefore, by providing the second ratchet mechanism, the shaft can be retracted by the first ratchet mechanism, that is, the vehicle body panel can be pulled out repeatedly. If the distance of the shaft that moves by operating the operation lever once is set by the rack tooth interval, the length of the ratchet claw, etc., how many times the operation lever is operated or how many ratchet claws By measuring whether or not the rack teeth have been moved, it is possible to accurately adjust the retraction amount of the shaft, and hence the pull-out amount of the vehicle body panel. For example, when the ratchet pawl meshing with the rack is moved in the retracting direction of the shaft by pulling the operation lever, the amount of movement of the ratchet pawl that moves by one gripping operation is specified, If the number of rack teeth existing in the amount of movement is specified, the number of rack teeth to which the ratchet pawl moves when the attracted control lever is returned to the original position is specified by the hand feeling or sound. The shaft can be retracted by an intended amount by returning it by a predetermined amount and pulling the operation lever again.

  When the second ratchet mechanism that restricts the movement of the shaft regardless of the operation lever is provided as described above, the shaft of the second ratchet mechanism must be released in order to advance the shaft again. I must. Therefore, in the present invention, it is desirable to further provide a return lever that simultaneously releases the engagement between the rack and the ratchet in the first ratchet mechanism and the engagement between the rack and the ratchet in the second ratchet mechanism. If formed in this way, the restrictions on the two ratchet mechanisms can be released by a single operation of the return lever, and the work efficiency in the repair work can be improved.

  Further, it is desirable that the shaft is urged in a direction to advance by a spring or other elastic member at all times or in a retracted state. This is to enable the shaft to quickly return to the original position when the restrictions on the two ratchet mechanisms are released by operating the return lever.

  In the sheet metal drawing tool of the present invention, as described above, it is possible to adjust the drawer amount of the panel by the ratchet mechanism, but in the case of more reliably adjusting the drawer amount of the panel. It is desirable that a hole portion drilled in the axial direction is formed on the rear end side of the shaft, and a pull-out amount adjusting shaft for adjusting the retraction amount of the shaft is inserted into the hole portion. That is, a shaft that advances and retreats when the panel is pulled out is supported by a pulling amount adjusting shaft fixed to the frame, and its moving amount is adjusted. In particular, since the pull-out amount adjusting shaft is inserted into a hole portion drilled in the axial direction of the shaft, not only the retraction amount of the shaft but also the moving direction of the shaft can be regulated. Therefore, if it forms in this way, since the moving amount and moving direction of a shaft can be controlled with a single member, weight reduction of the drawing tool for sheet metal can be achieved.

  Further, in order to accurately adjust the drawer amount of the panel, in the sheet metal drawer according to the present invention, a scale portion along the shaft advancing / retreating direction is provided on the base frame, and a guideline for indexing the scale portion is provided in the drawer amount. It can be provided on the adjusting shaft. If formed in this way, the amount of movement of the pull-out amount adjusting shaft can be set more accurately, that is, the amount of movement of the shaft and hence the amount of pull-out of the panel can be set accurately.

  As described above, the sheet metal drawing tool according to the present invention includes the ratchet mechanism, the shaft drawing amount adjustment shaft, and / or the scale portion and the pointer, so that the depth of the dent measured prior to the drawing work can be reduced. It is a sheet metal drawing tool that can be used for drawing work by effectively utilizing the measurement results, and that can freely adjust the drawing amount of the vehicle body panel without troublesome operations.

  Therefore, by using the sheet metal drawing tool according to the present invention, the body panel can be repaired and the amount of the body panel can be adjusted without troublesome operations. In the case where the depth is measured, the amount of withdrawal corresponding to the depth can be adjusted by a simple method.

  Further, by using the ratchet mechanism, the force required for the drawing can be dispersed a plurality of times, so that the labor for the drawing work can be saved.

  Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

  FIG. 1 is an overall perspective view of a sheet metal drawing tool 10 according to the present embodiment, FIG. 2 is a schematic view showing an aspect of a seat member 21, and FIG. 3 is a sheet metal drawing tool 10 according to this embodiment. 4 is a schematic diagram showing a height adjusting structure of the leg 27, and FIG. 5 is a schematic diagram showing a hitting position with a hammer or the like.

  First, based on FIG. 1, the overall configuration of the sheet metal drawing tool 10 according to this embodiment is shown. The sheet metal drawing tool 10 includes a base frame 20 provided with leg portions 27 that come into contact with the sheet metal surface, The shaft 30 is provided so as to be able to advance and retreat with respect to the base frame 20 and is provided with a connector 31 with a sheet metal surface at the tip. Of these, the leg portion 27 is configured to include at least a contact seat member 21 that comes into contact with the sheet metal surface during the pulling-out operation, and a stand member 24 that attaches the contact seat member 21 to the base frame 20. The seat member 21 is attached to the base frame 20 so as to be rotatable.

  In particular, the sheet metal drawing tool 10 shown in this figure is formed so that the welding tip 31 provided at the tip is joined to the panel P surface to be repaired by electric welding. The shaft 30 provided with is formed so as to retreat upward in the drawing when the panel P is pulled out. Further, the sheet metal drawing tool 10 shown in this figure includes an operation lever 40 for retreating the shaft 30. By grasping the operation lever 40, the shaft 30 retreats, and the welding tip at the tip is accordingly accompanied. Panel P joined to 31 can be pulled out.

  In the present embodiment, the leg portion 27 is composed of two leg portion structural units 25 that exist symmetrically, and each leg portion structural unit 25 includes a stand member 24 and a seat member 21 connected to the tip end thereof. Each of them is formed to be movable independently.

  Each leg structural unit 25 is provided so that the seat member 21 can freely rotate in a plane parallel to the body panel P surface with which the abutting seat member 21 abuts, and as shown in FIG. Various postures can be presented. In particular, FIG. 2 shows an embodiment in which a different type of abutment member 21 is used, and the abutment member 21 shown in FIG. 2 (A) has a planar shape obtained by curving the elongated water droplet shape. It is joined to the stand member 24 at the widest part. 2 (B) has a rounded wedge-shaped planar shape as a whole, and is also joined to the stand member 24 at the widest portion. FIG. 2 (C) shows a mode in which a different abutment member 21 having a planar shape is used for each leg unit 25, and one abutment member 21 is the same as that shown in FIG. 2 (A). Thus, the other abutting seat member 21 uses the abutting seat member 21 having a wedge-shaped planar shape which is formed on a slightly long shape. The abutment member 21 of any of these aspects is also installed so as to be rotatable around the axis of the stand member 24.

  Next, with reference to FIG. 3, a usage mode of the seat member 21 in the sheet metal drawing tool 10 according to the present embodiment will be described. For example, as shown in FIG. 3A, when the dent to be repaired is long like a line scar 60, the abutment member 21 in each leg component unit 25 is aligned with the line scar 60. It is possible to install so that the welding tip 31 comes directly above the wire wound 60 by spreading it. On the other hand, as shown in FIG. 3B, in the case of the dent 61 in which the dent to be repaired is recessed with a certain area, the seat member 21 in each leg component unit 25 is placed in the region of the same height. By deploying so as to exist, the sheet metal drawing tool 10 (particularly the shaft 30) can be installed in the vertical direction with respect to the panel surface P, whereby the panel P surface can be pulled out in the vertical direction.

  And, in the sheet metal drawing tool 10 shown in the present embodiment, a groove 27 is formed in the circumferential direction as shown in FIG. 4 on the rear end side of the stand member 24 in each leg unit 25. A screw 26 inserted from the base frame 20 is attached to the groove 27 so as to fit. By attaching the stand member 24 with such a structure, each screw 26 functions as a lock mechanism that prevents the stand member 24 from moving in the axial direction with respect to the base frame 20.

  Also, when using this sheet metal drawer 10 to pull out the recessed part of the vehicle body panel P, by pulling out one point of the recessed part, the area around the pulling point is also pulled out accordingly. There is also a possibility that a portion that rises more than the panel P surface before damage occurs (H point in FIG. 5). Therefore, a flatter drawing surface can be created by striking the point H with a hammer or the like simultaneously with the drawing of the sheet metal drawing tool 10.

  The sheet metal drawing tool 10 configured as described above can freely adjust the installation shape (arrangement shape of the abutment seat member 21) with respect to the panel P surface to be repaired. Since the seating member 21 can be arranged so as to secure a space for performing it, more accurate repair work can be performed.

  Next, a preferable internal structure, action and effect of the sheet metal drawing tool 10 which can be accompanied by the leg 27 will be described with reference to FIGS.

  FIG. 5 is a schematic view showing the internal structure of the sheet metal drawing tool 10 according to the present embodiment, FIG. 7 is an enlarged view of the main part showing the ratchet mechanism R, and FIG. 8 shows the sheet metal drawing tool 10. FIG. 9 is a schematic view showing a scale portion 23 for accurately adjusting the drawing amount, and FIG. 10 shows damage to the vehicle body panel P using the sheet metal drawing tool 10. It is the schematic which shows the state which is repairing.

  First, the internal structure of the sheet metal drawing tool 10 according to the present embodiment will be described with reference to FIG. The sheet metal drawing tool 10 shown in this figure includes a base frame 20 to which a seat member 21 that contacts the sheet metal surface P is attached, a shaft 30 that can be moved forward and backward with respect to the base frame 20, and a tip of the shaft 30. A welding tip 31 that is provided and welded to the recess of the vehicle body panel P, an operation lever 40 that applies a force for moving the shaft 30 backward, and a shaft 30 that is moved backward by the force applied to the operation lever 40. It is configured with one ratchet mechanism R1, a pull-out amount adjusting shaft 50 that regulates the retreat amount of the shaft 30, and a second ratchet mechanism R2 that prevents the retreat of the retracted shaft 30.

  The welding tip 31 provided at the tip of the shaft 30 is supplied with electricity supplied to the joint with the shaft, and is electrically welded to the vehicle body panel P. On the other hand, a hole portion 32 formed in the axial direction is formed at the rear end of the shaft 30, and a drawing amount adjusting shaft 50 is inserted into the hole portion 32. As a result, the shaft 30 can move forward and backward along the pull-out amount adjusting shaft 50.

  The pull-out amount adjustment shaft 50 is screwed into a nut 22 attached to the base frame 20, and the rear end thereof is connected to the nut 22 so that the advancement / retraction with respect to the nut 22 can be operated from the outside of the base frame 20. An operation unit 51 of the pull-out amount adjusting shaft 50 is provided. With this operation portion 51, the pull-out amount adjustment shaft 50 can be rotated around the axis so that the insertion amount into the hole portion 32 can be adjusted.

  The rack 33 provided on the shaft 30 is engaged with a ratchet claw 41 that is energized by an elastic member 42 such as a spring, and this ratchet claw is swingable with respect to the base frame 20. By moving the operation lever 40 pivotally or pivotally attached to the rack teeth 33 ′ by moving it in the direction of the arrow in FIG. 6, the shaft 30 is retracted as the operation lever 40 moves.

  Thus, in the sheet metal drawing tool 10 according to the present embodiment, the shaft 30 is retracted by the ratchet mechanism R. Therefore, by adjusting the return amount of the operation lever 40, the retract amount (that is, the panel surface P) (Drawing amount) can be adjusted accurately.

  That is, as shown in FIG. 7, when the distance that the shaft 30 moves by swinging the operation lever 40 once is (X), the ratchet pawl 41 is moved to the original position by returning the operation lever 40 to the original position. It moves by the number (Y) of rack teeth 33 ′ existing in the range of (X). Therefore, by calculating “distance (X) / number of rack teeth 33 ′ (Y)”, it is possible to calculate the retraction amount (drawing amount) per rack tooth. Therefore, when the operation lever 40 is returned, the operation lever 40 is returned by the number of rack teeth corresponding to the desired retraction amount (drawing amount), and the operation lever 40 is pulled again in the meshing direction of the ratchet pawl 41 to accurately The amount of drawer can be taken out. Note that the return number of the rack teeth 33 ′ when the drawer lever is returned can be specified by the feel and sound transmitted to the operation lever 40.

  In FIG. 7, if the moving distance (X) of the shaft 30 is 3 mm, the rack teeth 33 ′ are moved by three by one operation, so the moving distance per rack tooth is “3 mm / 3 pieces”. 1 mm. Therefore, when returning the operation lever 40, if the movement amount of the ratchet pawl 41 is set to two rack teeth, the shaft 30 can be retracted by 2 mm and the panel P can be pulled out by 2 mm by pulling the operation lever in the next operation. .

  The shaft 30 retracted by the operation of the first ratchet mechanism R1 is prevented from moving in the forward direction by the second ratchet mechanism R2, and its retracted position is maintained. Even when 40 is returned to the original position, the pull-out amount of the panel P can be maintained.

  In particular, as shown in this embodiment, the ratchet mechanism R is used for the backward movement of the shaft 30, and the second ratchet mechanism R for preventing the forward movement is further provided. The panel P can be pulled out in small increments. As a result, the panel P can be pulled out easily with a small gripping force, which conventionally required a large gripping force. Therefore, if the sheet metal drawing device according to the present invention is used, the body panel P can be pulled out even with a weak gripping force such as a woman.

  Then, after retracting the shaft 30 by the required amount and pulling out the panel P, the return lever 43 is operated (pulled) to simultaneously engage the rack 33 and the ratchet teeth in the first ratchet and the second ratchet mechanism R. release. By this release, the base frame 20 is pushed backward by the elastic member 34 installed on the rear end side of the shaft 30, and the abutment member 21 is separated from the sheet metal surface P. Therefore, the welding tip 31 joined to the panel P is shaken or turned to peel off the welding tip 31 from the panel P and weld to the next repair point.

  It should be noted that an electrical energization switch for joining the tip of the welding tip 31 to the panel surface P is preferably provided within a range that can be operated with the finger placed on the operation lever 40.

  Next, a repair method for adjusting the drawer amount of the panel P more accurately using the drawer amount adjusting shaft 50 and the scale portion 23 in the sheet metal drawer 10 will be described with reference to FIGS.

  First, with the shaft 30 positioned first, the welding tip 31 provided at the tip is electrically welded to the panel P surface to be repaired (FIG. 8A). Next, the operation lever 40 is pulled to retract the position of the shaft 30 (relative to the base frame 20) until the abutting seat member 21 contacts the panel P surface. At this time, when the vehicle body panel P is taken as a reference, the base frame 20 is advanced toward the vehicle body panel P (FIG. 5B). In this state, the pull-out amount adjusting shaft 50 is screwed in until it comes into contact with the bottom surface of the hole 32, and then retracted by an amount corresponding to the pull-out amount ((C) in the figure). As for the retraction amount of the pull-out amount adjusting shaft 50, it is desirable to adjust the width, angle, etc. of the screw groove provided in the pull-out amount adjusting shaft 50 so that, for example, the retraction amount adjusting shaft 50 retreats by 2 mm. Further, as shown in FIG. 9, the scale portion 23 along the shaft 30 advancing / retreating direction is provided on the base frame 20, and the pointer 52 indicating the scale portion 23 is moved together with the pull-out amount adjusting shaft 50 such as the operation portion 51. The pull-out amount adjusting shaft 50 can be moved backward based on the value of the scale portion 23 indicated by the pointer 52 provided at the location.

  Due to the retraction of the pull-out amount adjustment shaft 50, a space portion having a length corresponding to the retraction amount of the pull-out amount adjustment shaft 50 is generated between the tip of the pull-out amount adjustment shaft 50 and the bottom surface of the hole portion 32. Then, as shown in FIGS. 8D and 8E, the operation lever 40 is operated a plurality of times to move the shaft 30 in the rear end direction, and the recessed panel P surface is pulled out.

  When the initially planned withdrawal amount (ie, the amount by which the withdrawal amount adjustment shaft 50 is retracted) is pulled out, the bottom of the hole 32 at the rear end of the shaft 30 is pulled out as shown in FIG. Since it hits the tip of, it can prevent further withdrawal. Since the initially scheduled drawing operation is completed, the return lever 43 is pulled to disengage the first and second ratchets, and the abutting seat member 21 is lifted from the panel P surface. Thereafter, the welding tip 31 is peeled off from the panel P surface and moved to the next drawing point, and the same operation is performed.

  This work state can be performed on a dent generated in the vehicle body panel P as shown in FIG.

  After pulling out the recessed panel surface P to some extent by the above operation, as with conventional repair methods, putty application / curing work, surfacer (primer surfacer) application / curing work, and polishing work as appropriate Finally, the top panel is painted and polished to complete the repair work on the body panel P.

It should be noted that the present invention is not limited to the above-described embodiment, and it is needless to say that various modifications can be made without departing from the gist of the present invention.
And the drawing tool for sheet metal concerning this invention can be accompanied with the following structures desirably.
(1) A base frame with a base plate attached to a sheet metal drawing tool for pulling out the sheet metal surface,
A shaft provided so as to be movable back and forth with respect to the base frame, and provided with a connector with a sheet metal surface at the tip;
An operating lever as an operating part when the shaft is retracted;
A sheet metal drawing tool comprising a first ratchet mechanism for retracting the shaft in response to an operation of the operation lever.
(2) The first ratchet mechanism according to (1), wherein the first ratchet mechanism includes a rack provided on the shaft, and a ratchet claw that urges the rack in a backward direction of the shaft by operation of the operation lever. Sheet metal drawer.
(3) The sheet metal drawing tool according to (1) or (2), further including a second ratchet mechanism that prevents the shaft retracted by the first ratchet mechanism from moving forward.
(4) Further, in the first ratchet mechanism, a return lever is provided that simultaneously releases the engagement of the rack and the ratchet and the engagement of the rack and the ratchet in the second ratchet mechanism. The drawer tool for sheet metal according to any one of the above.
(5) The withdrawal tool for sheet metal according to any one of (1) to (4), wherein the shaft in the retracted state is urged in a direction to advance by the elastic member.
(6) Furthermore, a hole portion drilled in the axial direction is formed on the rear end side of the shaft, and a pull-out amount adjusting shaft for adjusting the retraction amount of the shaft is inserted through the hole portion. The drawer tool for sheet metal according to any one of (1) to (5).
(7) Further, the base frame is provided with a scale portion along the shaft advancing / retreating direction, and the pull-out amount adjustment shaft is provided with a pointer that moves together with the pull-out amount adjustment shaft and indicates the scale portion. The sheet metal drawer according to (6).
(8) A sheet metal drawing tool for pulling out the sheet metal surface,
A base frame to which a seat to hit the sheet metal surface is attached;
A shaft that is provided so as to be able to advance and retreat with respect to the base frame, a connection tool with a sheet metal surface is provided at the front end, and a hole having a hole formed in the axial direction at the rear end;
An operation lever which is an operation unit when the shaft is retracted;
A first ratchet mechanism for retracting the shaft in response to an operation of the operation lever;
A second ratchet mechanism that prevents the forward movement of the shaft retracted by the first ratchet mechanism;
An elastic member that urges at least the retracted shaft in a forward direction; and
A pull-out amount adjusting shaft that is inserted through a hole formed in the rear end side of the shaft and adjusts the retraction amount of the shaft;
A scale portion provided in the base frame, along the shaft advancing / retreating direction,
A guide provided on the pull-out amount adjustment shaft, which moves together with the pull-out amount adjustment shaft, and indicates the scale portion;
A sheet metal drawer.
(9) A method of repairing a vehicle body panel for repairing a dent in the vehicle body panel,
The repair method includes a step of pulling out the recessed body panel with a sheet metal drawing tool,
The sheet metal drawing tool according to any one of (1) to (8), wherein the sheet metal drawing tool is used.
(10) A method of repairing a vehicle body panel for repairing a depression in the vehicle body panel,
The repair method includes a pulling-out process of pulling out the depressed body panel with the sheet metal drawing tool according to (8),
A step of welding a connector provided at the tip of the shaft biased in the forward direction by the elastic member to the sheet metal surface;
A step of operating the operating lever to retract the shaft and abut the seat against the sheet metal surface;
The pull-out amount adjusting shaft inserted into the hole formed in the rear end side of the shaft is pressed against the bottom surface of the hole, and the pull-out amount corresponding to the pull-out amount of the vehicle body panel is drawn based on the pointer indicating the scale portion. A step of retracting the amount adjusting shaft,
Repairing the vehicle body panel, comprising a step of operating the operating lever until the bottom surface of the hole formed in the rear end side of the shaft comes into contact with the tip of the retracted pull-out amount adjusting shaft to retract the shaft. Method.

Whole perspective view of sheet metal drawing tool according to the present embodiment Schematic showing the aspect of the seat member Schematic diagram showing a usage example of the sheet metal drawing tool according to this embodiment Schematic diagram showing leg height adjustment structure Schematic diagram showing the hitting position with a hammer The schematic which shows the internal structure of the drawing tool for sheet metal concerning this Embodiment Enlarged view of main parts showing ratchet mechanism Schematic showing the drawing process using a sheet metal drawing tool Schematic diagram showing the scale for accurately adjusting the amount of drawer Schematic showing the state of repairing damage to the body panel using a sheet metal drawer

Explanation of symbols

10 Sheet metal drawer
20 base frame
21 Seat member
22 Nut
23 Scale
30 shaft
31 Welding tips
32 holes
33 racks
33 'rack teeth
40 Control lever
41 ratchet claws
42 Elastic member
43 Return lever
50 Drawer adjustment axis
51 Operation section
52 Guidelines
P body panel
R ratchet mechanism
R1 first ratchet mechanism
R2 second ratchet mechanism

Claims (5)

A sheet metal drawing tool for pulling out the sheet metal surface,
A base frame provided with legs that contact the sheet metal surface;
A shaft that is provided so as to be movable back and forth with respect to the base frame and that is provided with a connection tool with a sheet metal surface at the tip;
The leg includes a seat member that contacts at least a sheet metal surface during a pull-out operation, and a stand member that attaches the seat member to the base frame.
The seat member in the leg is attached to the stand member so as to be rotatable with respect to the base frame ,
The sheet metal drawer is characterized in that the abutting seat member is formed widely at a portion attached to the stand member, and is formed to have a narrower width as the distance from the attachment portion increases . The legs against seat member and the leg structural unit comprising a stand member in combination of two or more is constituted, sheet metal drawer device of claim 1. The stand member is attached to the base frame so as to be movable back and forth, and a mounting mechanism of the stand member in the base frame is provided with a lock mechanism that prevents at least the movement of the stand member in the axial direction with respect to the base frame. The drawer tool for sheet metal according to claim 1 or 2 . Furthermore, a shaft provided so as to be movable forward and backward with respect to the base frame, and provided with a connection tool with a sheet metal surface at the tip,
An operating lever as an operating part when the shaft is retracted;
The sheet metal drawing tool according to any one of claims 1 to 3 , further comprising a first ratchet mechanism that retracts the shaft in accordance with an operation of the operation lever. A method of repairing a body panel for repairing a dent in the body panel,
The repair method includes a step of pulling out a recessed body panel using the sheet metal drawing tool according to any one of claims 1 to 4 , and a step of hammering the panel together with a step of pulling out the panel. The repair method of the body panel.

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