JPH0929648A - Tool for press bonding folded and overlapped part of metal plate - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a tool for press bonding a folded and overlapped part of a metal plate, in which position of a supporting point can be changed with simple operation and pinching force can be changed at plural stages. SOLUTION: A first tool main body 16 is provided with a flange part 18 in the tip thereof, and provided with a grip part 19 in the other end, and provided with a pivot part 23 in the intermediate part thereof. Through holes 20, 21, 22 are drilled in the pivot part 23, and the other pivot part 24 is provided in the intermediate part of a second tool main body 17. Through holes 25, 26, 27 are provided in this pivot part 24, and a flange part 28 is provided in the tip, and a grip part 29 is provided in the other end. Both the pivot parts 23, 24 are connected to each other by a supporting shaft material to be selectively passed through any one pair of through holes 24, 26, 27.

Description

Detailed Description of the Invention

[0001]

SUMMARY OF THE INVENTION The present invention is mainly one of sheet metal working tools, and relates to an improved structure of a tool for crimping a folded overlap portion of a metal plate, commonly called "tsukami". If the crimping force required for flattening is excessive or insufficient depending on the thickness of the metal plate and the number of times it is folded, the position of the fulcrum can be changed smoothly and in multiple steps by a simple operation. Therefore, an object of the present invention is to provide a tool for crimping a folded folded portion of a metal plate having a novel structure that enables selection of an optimum crimping force to enhance work efficiency.

[0002]

2. Description of the Related Art A tool used for sheet metal working, particularly for crimping a folded overlap portion of a metal plate, is generally shown in an exploded perspective view in FIG. 9 and a side view in FIG.
And a crimping tool commonly referred to as a "tsukami" having a structure as shown in FIG. 11 shown in the plan view. That is,
This crimping tool 1 includes a first tool body 2 and a second tool body 3
And a scissors-like structure in which both of them are combined in a cross shape and are rotatably pivoted about a support shaft member 4 which pivotally supports the cross portion, that is, the handle side is grasped by a hand. By the operation of loosening or the like, an action portion formed ahead of the support shaft member 4, for example, a structure in which an object can be cut by a blade portion is realized. A cambered upper jaw 5 is formed in the vicinity of the front end side of the garment 7, and a relatively long lower handle 6 is provided from the pivotal joint 7 to the rear end side. A through hole 8 having an axis perpendicular to the rotation direction of 5 is bored, and the second tool main body 3 combined with the through hole 8 also has a structure similar to that of the first tool main body,
The upper warp-shaped lower jaw 9 having a surface shape that can be attached to the back surface of the upper warped upper jaw 5 of the first tool body 2 is formed in the immediate vicinity of the tip end side of the Has a relatively long upper handle 10, and the pivot 11 has a through hole 12 having an axis perpendicular to the direction of rotation of the cambered upper jaw 5. ing.

The first tool main body 2 and the second tool main body 3 have their through holes 8 and 12 aligned with each other so that their axes coincide with each other.
The pivot parts 7 and 11 are in contact with each other, and the stud 4 serving as a support shaft material
Is inserted from the outside of one of the through holes 8 and the washer 13 is fitted into the tack 4 protruding from the other through hole 12, and then the tip end thereof is caulked and crushed to form a head portion of the other end to prevent disengagement. If it is necessary to improve the operability of the holding operation, the user may request the manufacturer himself or the manufacturer to open the upper and lower handle portions 6 and 10. It is used for work by adjusting by plastic deformation so that the angle and the angle are optimal.

When performing sheet metal working for crimping the folded overlap portion of the metal plate P using the conventional crimping tool 1, the object to be worked is, for example, a single folded overlap portion of about 2 to 3 thin iron plates P. There is or 2 of one iron plate P
If the folded-over overlapping portion P1 and the like are repeated three times or more, the crimping work can be completed without any difficulty with the crimping tools used so far. However, it is a folded overlap portion P1 of a relatively thick iron plate P, or a folded overlap portion having high rigidity as a whole, such as a crimping operation of a single folded overlap portion of 4 to 5 or more iron plates P, which is not thick. In the case of the crimping work of a part, the crimping tool formed for normal work makes the crimping work extremely difficult and the actual work cannot be performed, or it takes time with a considerable amount of force. Had to repeat work, which not only drastically reduced work efficiency but also deteriorated the finish. Therefore, when performing such sheet metal processing, it is necessary to prepare a plurality of crimping tools 1 having different structures according to the work object such as plate thickness and material, and to use them properly as necessary. Therefore, not only a lot of cost is required for the tool, but also an unnecessary burden is imposed on the maintenance.

Generally, not only a sheet metal working tool but also a tool for improving the handleability by changing the position of the support shaft member 4 is, for example, a slip joint plier or a tan and groove plier. In the structure already adopted in, the technical novelty of changing the support shaft mounting position with these tools is not recognized, but the already known or well-known slip joints are adopted. In the case of a tool, as a result, the force transmitted to the action part, for example, the part that performs the action of pinching, grasping, cutting, etc., is not changed, but most of them are the operated part, That is, adjustment that is convenient for matching the size of the sandwiched side, the grasped side, and the cut side, that is, the opening adjustment of the action part is adjusted (as a result, after adjustment) In the state of the tool, the action parts do not come into direct contact with each other, and the action that could be dealt with before adjustment cannot be performed), and the purpose is to adjust the force applied to the action part. Nothing adopts the technical idea of freely changing the mounting position of the support shaft material, and in particular, for the crimping tool which is the technical field of the present invention, the tool having the above-mentioned structure is still adopted. It is a state that is only being done.

In view of the above-mentioned drawbacks of the conventional crimping tool 1 and the situation of general tools, the inventor of this application crimps the working portion without affecting the working range of the working portion. Began to improve and develop a crimping tool 1 that can change the strength of force stepwise or steplessly, and make it possible to freely change the position of the fulcrum shaft member 4 while repeating various trial and error. As a result of continuing the research and development of a crimping tool having a structure in which the crimping force can be changed as necessary, as a result, the support shaft member 4 is deformed or dropped even by the large shearing force generated by the working work. Does not occur, the spindle structure of the first tool main body 2 and the second tool main body 3 is reliably maintained, and the fulcrum position can be changed by an extremely simple operation, and even after the fulcrum position is determined. , Use special tools, etc. Even if it is not, it has succeeded in realizing a crimping tool having a new structure having a temporary fixing structure that enables reliable position fixing, and in the following, the details of the configuration will be described with reference to the present invention shown in the drawings. The explanation will be given sequentially while using the description of some representative examples together.

[0007]

As clearly understood from the embodiments of the present invention shown in the drawings, the crimping tool of the present invention basically has the following construction. That is, a wide upper warp-shaped upper jaw is formed in the vicinity of the tip side of the pivotally-attached portion in which a plurality of through-holes through which the support shaft member can be inserted are formed, and the rear end side from the pivotally-attached portion is relatively long. A first tool body formed in the lower handle portion, and a pivotal attachment portion formed with a plurality of through holes for inserting the support shaft members corresponding to the through holes of the first tool body,
A wide upper cambered lower jaw part having a surface shape that can be attached to the back surface of the upper warped upper jaw part of the first tool body is formed in the vicinity of the tip side, and the rear end side from the pivotally attached part is relatively formed. A second tool body formed in a long upper handle, wherein the first tool body and the second tool body have their pivotally attached portions in contact with each other,
In addition, each of the first tool body and the second tool body is combined with a cross structure including a state in which the surface of the second tool body warped lower jaw can be attached to the back surface of the first tool body upper warped upper jaw. A shaft member is inserted into both corresponding selected holes of the plurality of through holes of the pivot portion so that the pivot position can be freely changed, and the first tool body and the second tool body are scissors. It is a tool for crimping a folded portion of a metal plate formed into a striped structure.

More specifically, the metal plate folded overlapping portion crimping tool of the present invention having the above-described basic structure is more specifically capable of inserting a spindle member and sliding the spindle member between them. A wide upper cambered upper jaw is formed in the vicinity of the tip side of the pivotally connected part that is formed with a plurality of through holes that communicate with each other and is relatively long from the pivotally connected part to the rear end side. A communication between the first tool body formed in the lower handle portion and the support shaft member that can be inserted in the arrangement corresponding to the through hole of the first tool body, and the support shaft member is slidably movable between them. In the vicinity of the tip side of the pivotally connected part formed with a plurality of through-holes communicating with each other, a wide top having a surface shape that can be attached to the back surface of the upper warped upper jaw of the first tool body A warped mandible is formed, and a rear end from the pivotal joint is formed in a relatively long upper handle. A tool main body, the first tool main body and the second tool main body have respective pivotally attached portions in contact with each other, and the second tool main body warped lower jaw surface on the back surface of the first tool main warped upper jaw For a corresponding selected through hole in a plurality of through holes of each of the first tool body and the second tool body pivot joint, in addition to a cross structure including a state in which , A tool for crimping a folded metal plate overlapped portion having a structure in which a pivot member is rotatably inserted at its pivotal position to form a first tool body and a second tool body in a scissor-like structure. it can.

The plurality of through holes formed in each tool main body are formed in an arrangement structure corresponding to the pivotal connection portion between the first tool main body and the second tool main body, and the corresponding through holes mutually support the shaft member. Is selectively inserted and penetrated, and has a function of enabling the opening and closing movement in a state where the first tool body and the second tool body are combined in a cross shape with the supporting shaft material as a fulcrum. The through holes are formed as independent ones at appropriate intervals, or they are connected laterally via a communication part,
Alternatively, it also includes a structure formed as a long hole (a hole having a structure in which through holes are continuously connected), and any of them has a size, shape, or shape that is not disadvantageous in eliminating the axial displacement of the support shaft material, or It is formed as a finished surface.

The jaw portion is a structural portion formed in a wide warp shape which is indispensable as a crimping tool (to be exact, wide in the lateral direction) and is pivotally attached to both the first and second tool bodies. Formed near the tip side of the tool, the jaw of the first tool body becomes the upper warped upper jaw, the surface of the second warped upper jaw of the second tool main body is selected on the back surface, and the position of the temporary support shaft is selected. , Even if it is changed, the forming direction from the pivotal part and the shape of the surface of the jaws in the splicing shape are combined so that they are always regulated so that the substantially splicing state is realized. Must be regulated. The handle has a relatively long thin rod shape from the pivotal attachment to the rear end side in both the first and second tool bodies.
That of the first tool body is the lower handle, that of the second tool body is the upper handle, and the first and second tool bodies are each pivoted so that each jaw is combined in the above-described arrangement. It is assembled in close contact with each other.

The support shaft material is substantially two or more (that is, formed in a long hole) formed in each pivotally-attached portion of the first tool body and the second tool body having the combined structure regulated as described above. And the first tool body with the shaft center of the support shaft member as the center of rotation, being inserted through the through holes at selected positions corresponding to each other concentrically. The second tool body fulfills the function of realizing a rotatable structure, that is, a scissor-like structure, with the respective pivotally-attached portions being in a cross shape.

Therefore, as the support shaft material, a combination with a bolt / nut or a wing nut that has been adopted so far, a tool for crimping the tip with a tack, a cotter pin, a washer, etc. is used. Not only is it possible to apply all of the above-mentioned functions, for example, one of bolts or nuts
Rotation is restricted by engaging with a restriction portion provided on any one of the tool main body and the second tool main body, and rotation operation is easy when operating either the nut or the bolt. Or a combination of a detent structure, a positioning structure, a sliding movement restricting structure, or a structure that also serves as those described in the examples described below, as appropriate. Or, a structure independently incorporated, specifically, corresponding to the drilling positions of the through holes drilled two or more on the outer side of either the first tool body or the second tool body, respectively, An engaging body provided with a restricting piece extending parallel to the axis of the through hole is integrated, and one of the bolt head or the nut inserted into the through hole is engaged with and disengaged from the restricting piece. Pivotally attach the base end of the hook ring that engages An operation piece that has a structure in which an operation piece that facilitates the operation with fingers is provided on the other side of the head or nut of the inserted bolt, or the operation provided on any of the bolts or nuts of this support axis material. One with an operation lever, one with two or more operation pieces in the shape of a butterfly screw, or one formed with a dial-shaped operation knob or the like instead of the operation lever. It can also be used as a support shaft material. Hereinafter, some typical embodiments shown in the drawings will be described in detail so that the constitution of the crimping tool included in the present invention can be grasped more concretely and clearly.

[0013]

[Embodiment 1] First, a perspective view showing the assembled state of the crimping tool of FIG. 1, an exploded perspective view showing the disassembled state of the crimping tool of FIG. 2, a side view of FIG. 1 shown in FIG. The case shown in the plan view of FIG. 1 and shown in FIG. 4 has the most typical configuration of the present invention. That is, the crimping tool 15 in this case is as shown in the whole exploded perspective view of FIG.
A first tool body 16 forming a main part of the crimping tool 15
And a second tool body 17, the first tool body 16 has one jaw portion 18 at the tip portion, a handle portion 19 at the other end side, and a rotation direction of the jaw portion 18 in the middle portion. The through holes 20, 21, and 22 that are perpendicular to the
One or more pivotally-attached portions 23, which are formed by one or more holes, are provided in the middle part of the second tool body 17 forming a pair with the first tool body 16.
The other pivoting portion 24 corresponding to the pivoting portion 23 is provided, and the pivoting portion 24 has a plurality of other through holes 25, 26, 27 corresponding to the through holes 20, 21, 22 concentrically. , The other jaw 28 corresponding to one jaw 18 is provided at the tip of the middle portion, and the other handle 29 corresponding to the handle 19 is provided on the other end side. The pivot 23 of
24 is rotatably connected by a connecting device 30 having a support shaft member that selectively penetrates through any one of a pair of through holes.

One jaw 18 and the other jaw 28 are
Each of the handle portions 19 and 29 is provided with a linear edge 31 formed in a T-shape, and the edges 3
1 are formed so as to coincide with each other on the same straight line, and are configured so that the sheet metal can be sandwiched with high accuracy. Also,
The handle portions 19 and 29 are provided with a plurality of annular grooves 32 for preventing slippage along the longitudinal direction. The pivot 23
Is provided with a side wall surface orthogonal to the edge 31 formed on the jaw portion 18, the side wall surface being formed wider than the handle portion 19, and the through hole 20, in a direction orthogonal to the side wall surface.
21 and 22 are drilled. These plural through holes 2
0, 21, 22 are formed such that their respective axes are parallel to each other, and are oriented in a direction orthogonal to the rotation direction of the jaw portion 18, and each is along the longitudinal direction of the first tool body 16, For example, they are arranged at equal intervals and the through holes 20,
21 and 22 are communication parts 3 formed so as to connect each other.
It is provided together with 3.

In this embodiment, the through holes 20, 21, 22 are
Has a structure in which they are communicated with each other by a communication portion 33. Each of the through holes 20, 21, 22 is provided with a peripheral surface sufficient to pivotally support a support shaft member of the connecting device 30 described later, and the shaft shift is caused. There is no possibility of causing. The other through holes 25, 26,
27 is also connected by a similar communication part 33,
There is no risk of misalignment of the support shaft material.

Pivot part 2 corresponding to the through holes 20, 21, 22
4, the other concentric through holes 25, 26, 27 corresponding to these through holes 20, 21, 22 are formed, and when the edges 31 of the jaws 18, 19 are aligned with each other. ,
Any one pair of the through holes 20, 22 and 25, and 27 of both of the through holes is formed in a structure that can be positioned concentrically.

The pair of pivot portions 23, 24 of the crimping tool 15 thus constructed has the above-mentioned connecting device 30, that is,
By a connecting device 30 which is provided with bolts 34 and nuts 35 which can be attached and detached by fingers, and which interposes a washer 36 so as to connect the first tool body 16 and the second tool body 17 to each other in a rotatable state. It is pivotally attached. The bolt 34 has a support shaft member formed in the middle thereof, a male screw engraved at the tip end thereof, a retaining head portion 34a formed at the base end portion thereof, and a nut 35 having a pair of butterfly screws. The operation piece 37 is provided and has a structure that can be tightened and disassembled by fingers.

Further, on the side wall surface of the crimping tool 15 which is orthogonal to the pivotal attachment portion 24 of the second tool body 17, for example, the engaging body 3 is provided.
8 are joined by two screws 39, 39. The engaging body 38 is a plate-shaped body manufactured separately from the second tool body 17, and is integrated by assembling. However, the structure is not limited to this structure.
For example, the second tool body 17 may be integrally formed at the same time when it is manufactured.

The engaging body 38 is, for example, a rectangular restricting piece 4.
0, 41, and 42 are integrally provided, and the restriction pieces 40, 41, and 42 are in a state of protruding outward from the side surface of the mounting portion 24 from which the head 34a of the bolt 34 protrudes, and restricting Pieces 40, 41, 42 are through holes 25, 2
6 and 27 are arranged so as to correspond to the drilled positions, and are made to extend in the same direction as the axial centers of the through holes 25, 26 and 27, respectively. And, in the head 34a of the bolt 34,
For example, the base end of a hook ring 43 engaging with any one of the rectangular restricting pieces 40, 41, 42 is rotatably pivoted, and the hook ring 43 causes the bolt 34 to move. The engagement with the restriction piece 40 restricts the rotation thereof.

The restricting pieces 40, 41, 42 are provided on the engaging body 38, and serve to prevent the rotation of the bolt 34 by rotating and engaging the hook ring 43. Of course, it is not limited to this structure,
For example, the restriction piece has a structure in which the rotation of the bolt 34 is stopped even if it is a hexagonal recess formed in the head 34a of the bolt 34 and formed so that a hexagonal head (not shown) fits into the head 34a. The head 34a of the bolt 34 can be outside
The engaging rod (not shown) radially extended from the
The same rotation-stopping effect can also be achieved by the structure in which the protrusions (not shown) that are provided upright in FIG. Further, the head ring 34a of the bolt 34 is provided with the hook ring 43, and the nut 35 is provided with the operation piece 37, but conversely, the operation piece 37 is provided on the head 34a side of the bolt 34 and the nut 35 side. Of course, it is also possible to provide an appropriate structural portion such as the hook ring 43 for stopping rotation.

[0021]

[Embodiment 2] An exploded perspective view of the crimping tool 45 of FIG. 5, FIG.
The assembled side view of the crimping tool 45 of FIG. 7, the plan view of the crimping tool 45 of FIG. 7 in the assembled state, and the perspective view of the crimping tool 45 of FIG. 8 show other typical configurations of the present invention. An example of a crimping tool 45 is shown. The crimping tool 45 is composed of a first tool body 46 and a second tool body 47 as main parts.

First, the first tool body 46 is provided with one jaw portion 48 at the tip portion and a handle portion 49 at the other end side, and a through hole 50 orthogonal to the rotating direction of the jaw portion 48 is provided in the middle portion. , 51 are provided along the chin portion 48 side and the handle portion 49 side, and two pivotally attached portions 52 are provided at predetermined intervals. Further, in the middle of the second tool body 47, the other pivotal attachment portion 53 corresponding to the pivotal attachment portion 52 is provided, and this pivotal attachment portion 53 corresponds to the pivotal attachment holes 50 and 51 concentrically. A plurality of other through holes 54,
55 is provided, and the other half of the jaw 56 which is paired with the one jaw 48 is provided at the tip of the middle part, and the other jaw 56 is paired with the handle 49 at the other end. The handle 57 is provided. And, in the mutual pivoting parts 52, 53,
A detachable connecting device 58 having a support shaft member selectively penetrating any one of the pair of through holes 50, 51, 54, 55 is provided, and the first tool body 46 and the second tool body 47 are connected to each other. They are pivotally attached to each other.

The connecting device 58 including the support shaft will be described in more detail. One of the through holes 50, 51 is communicated with each other by a communication portion 59, and each of the through holes 50, 51 holds the shaft center of the support shaft, which will be described later. It is formed with a sufficient peripheral surface, and even if this communicating portion 59 is present, it does not hinder the pivotal support of the support shaft material. Further, the through holes 50, 51 are provided on the side surface of the pivotal attachment portion 52 of the first tool body 46 facing the second tool body 47 side.
While the long groove-like dug portion 60 including both of the through holes 5 is formed, the other through holes 5 and 55 are also formed.
4 and 55 are provided to communicate with each other, each of which has a peripheral surface sufficient to hold a shaft center of a support shaft material, which will be described later,
Even if the communication portion 61 is formed, it does not cause any trouble in the pivotal support of the support shaft member.

From the side of one of the through holes 50, 51, a bolt constituting a support shaft member of the connecting device 58 is inserted, and the second bolt is formed.
The other through holes 54, 55 of the tool main body 47 are also formed in a through shape, and a nut 64 formed with a washer 63 is screwed into the tip end portion of the bolt protruding from the through holes 54, 55. 52 and 53 are rotatably connected to each other.
At the base of the head portion 62a of the bolt, the flange portion is formed with through holes 50, 51.
Is provided with a flange portion 65 that engages with the edge portion of the head portion 62, and a ridge knob 66 is formed on the end portion side of the head portion 62a. Also,
The nut 64 includes a pair of operation pieces 67 forming a thumbscrew,
67 is provided, and the bolt 62 and the nut 64 constitute a connecting device 58 that can be screwed and unscrewed by a finger operation.

The bolt constituting the support shaft member of the connecting device 58 has a restricting protrusion portion between the flange portion 62a and a threaded portion connected to the loose fitting portion 62 with a diameter substantially corresponding to the clearance gap of the communication portion 59. And a loose fitting portion 62 is formed through the loose fitting portion 62. The loose fitting portion 62 has a length such that it is loosely fitted into the through holes 50 and 51 of the first tool body. Has a wide cross-section portion substantially corresponding to the inner diameters of the through holes 50 and 51, and a communication portion 59 on the side substantially orthogonal to the wide cross-section portion.
The thin cross section of the loose fitting section 62 is used to form the bolt (of the special cross section described above). The fitting portion 62, the restricting protrusion portion and the threaded portion at the tip thereof can penetrate into the communication portion 59 gap gap,
Moreover, since it can be moved to the left and right, the bolt 66 is passed through the communication portion 59 and then moved in a sideways manner to reach either of the through holes 50 or 51.
When the bolt is rotated about its axis by 90 ° with fingers, and the thin cross section of the loose fitting portion 62 having a special cross section has a posture orthogonal to the communicating portion 59, the bolt has a clearance gap of the communicating portion 59. Unable to enter and therefore the coupling device 5
8 itself is in a state where it is stably stopped and placed in any of the selected through holes 50 or 51.

In the first embodiment, the connecting device 30 has a structure in which the rotation of the bolt 34 with respect to the second tool body 17 is restricted by engaging the hook ring 43 with the restriction piece 40. In the case of the control protrusion portion and the nut 64
The structure is such that the bolt can be temporarily fixed to the second tool body 47 by being screwed into the threaded portion and tightened. However, even in this temporarily fixed state, the loose fitting portion 62
The above-mentioned restriction protrusion formed at the boundary between the threaded portion and the threaded portion is accommodated in the oval or circular dug portion 60 of the stepped through hole (that is, from the back surface of the flange portion 65 to the loose fitting portion 62 and the regulation portion). Since the entire projecting portion is formed so as not to protrude from the thickness of the pivotal attachment portion of the first tool body 46), the first tool body 46 and the second tool body 47 oppose each pivotal attachment portion. The structure causes almost no gap between the surfaces, and therefore, there is no possibility that the first tool main body 46 and the second tool main body 47 rattle or twist even during the crimping operation as a tool.

[0027]

[Operation] As shown in FIGS. 3 and 4, the crimping tool 15 thus constructed and assembled has the through holes 20, 2
In the state where the bolt 34 is penetrated through 5, the through holes 22, 27
Jaw 1 indicated by arrow D in comparison with the case of being penetrated into
The crimping force by 8, 28 is greatly enhanced. According to the experiment of the prototype, as shown in FIG.
When the handle portions 19 and 29 are operated with a grip force E of 0 kg,
If the bolts 34 penetrate the through holes 22 and 27 indicated by C, the crimping force D is about 71 kg, which is the same as about 30 kg.
With the gripping force E of the
If it is used by penetrating through, the pressing force D will be about 173 Kg. In other words, the crimping force D has been improved to reach about 2.4 times, which is more than twice the conventional value. Further, when the bolt 34 is passed through the through holes 21 and 26 shown at the intermediate position B, it is possible to obtain the crimping force D of 88 kg which is about 1.2 times. Needless to say, these experimental values may naturally change depending on the position of the hand H from the support shaft member, the through holes 20, 21, 22 and the distances between the corresponding through holes 25, 26, 27. .

Also, in the case of the crimping tool 45 shown in the second embodiment, if the bolt 62 is penetrated and used in the through holes 50 and 54 as shown in FIG. 6, when the through holes 51 and 55 are penetrated, By comparison, it has been confirmed that the crimping force D by the jaws 48, 56 indicated by the arrow D can be greatly improved. As described above, since the crimping force D can be freely changed by changing the pivotal position of the bolt 34, the applicable range of the crimping tool 15 in this embodiment is compared with the conventional crimping tool. It has been dramatically expanded, and it has become possible to bend a thin iron plate and a multi-iron plate with the same crimping tool 15, which could not be conventionally processed with the same crimping tool. As a result, it is possible to use a large number of crimping tools, which have been conventionally required, by one tool, thereby reducing the tool cost and the labor and cost required for maintenance.

Further, the crimping tool 15 in this embodiment is used.
Includes an operation piece 37 on the nut 35 and a bolt 34.
Since the hook ring 43 that engages with any one of the restricting pieces 40, 41, 42 is provided on the head portion 34a of the head, the bolt 34 and the nut 35 can be very easily rotated by rotating the operation piece 37 with fingers. Can be screwed and unscrewed. In screwing and unfastening the bolt 34 and the nut 35,
The hook ring 43 is engaged with any one of the restricting pieces 40, 41, 42 to restrict the free rotation of the bolt 34, and to securely screw the nut 35 when the nut 35 is rotated. And can be twisted. Further, in the case of the second embodiment, since the head portion 62a of the bolt 62 is provided with the knob 66 and the nut 64 is provided with the operation pieces 67, 67, the operation by the fingers can be performed easily, and the screwing and the screwing can be performed. The work can be easily carried out, and the pivot holes 50, 51, 54 and 55 can be replaced very easily without using any tools.

[0030]

[Effect] As described above, the crimping tool of the present invention is
First of all, the jaws, that is, the crimping force in the action part for crimping, is optimal for crimping the folded overlapped part of the metal plate, which is the actuated part, by changing the position of the support shaft part. The feature is that it can be changed and a crimping tool with extremely excellent operability can be realized. Therefore, in crimping work such as the conventional crimping tools that differ in the material and structural strength of the material to be processed, it is possible to eliminate the inconvenience that it takes time to crimp or the crimping degree cannot be made uniform. At the same time, the complicatedness of having to prepare several kinds of crimping tools and properly use them in order to respond to those situations, can be eliminated satisfactorily.

In particular, in the tool for crimping a folded metal overlapping portion having a structure representative of the present invention shown in the embodiment, the spindle portion is constituted by bolts and nuts, and the through holes 20, 21, 22 in the pivotal attachment portion are formed. And 25, 26, 27,
Alternatively, like 50, 51 and 54, 55, both are connected by the communication portion 33 or 59 to facilitate the selection and change of the fulcrum positions of the bolts and nuts, and the hook ring 43 and the regulation. Since the combination structure with the piece 40 or the combination structure with the restricting protrusion and the nut 64 is adopted to surely fix the selected supporting shaft position by a simple operation, the manufacturing is easy. In addition to being suitable for mass production, it can be made particularly excellent in operation.

As described above, the present invention is a tool for crimping a folded portion of a metal plate. The crimping operability of the crimping operability is solid, its storage, management, manufacturing and other aspects are all characterized by its structural characteristics. Therefore, it is expected to be superior to conventional products and highly evaluated by related parties such as sheet metal processors.

[Brief description of drawings]

FIG. 1 is a perspective view showing an assembled state of a crimping tool shown as an example.

FIG. 2 is an exploded perspective view showing a disassembled state of the crimping tool of FIG.

FIG. 3 is a side view of the crimping tool of FIG. 1.

FIG. 4 is a plan view of the crimping tool of FIG. 1.

FIG. 5 is an exploded perspective view of a crimping tool shown as another embodiment.

6 is a side view of the crimping tool of FIG. 5 in an assembled state.

FIG. 7 is a plan view of the crimping tool of FIG. 5 in an assembled state.

FIG. 8 is a perspective view of the crimping tool of FIG. 5 in a use state.

FIG. 9 is an exploded perspective view showing the structure of a conventional crimping tool.

10 is a side view showing the crimping tool of FIG. 9. FIG.

FIG. 11 is a plan view showing the crimping tool of FIG. 9.

[Explanation of symbols]

15 Crimping Tool of Example 1 16 First Tool Main Body 17 Second Tool Main Body 18 Jaw Part 19 of First Tool Main Body 19 Same Handle 20, 21, 22 Same Through Hole 23 Same Pivoting Part 24 Pivot of Second Tool Main Body Attachment part 25, 26, 27 Same through hole 28 Same jaw part 29 Same handle part 30 Connecting device 34 Bolt 35 Nut 34a Bolt head 37 Operating piece 38 Engaging body 40, 41, 42 Restricting piece 43 Hook ring 45 Example 2 Crimping tool 46 First tool body 47 Second tool body 48,56 First tool body or second tool body Jaw 49,57 Same handle 50,51,54,55 Same through hole 52,53 Joint pivot Part 58 coupling device 59 communication part 62 loose fitting part

Claims (4)

[Claims] 1. A wide warp-shaped upper jaw is formed in the vicinity of the tip side of a pivotally-attached portion in which a plurality of through-holes through which a support shaft member can be inserted are formed, and a rear-end side from the pivotally-attached portion is formed. The first tool body formed in a relatively long lower handle portion and the pivotal attachment portion having a plurality of through holes for inserting the support shaft members corresponding to the through holes of the first tool body, immediately adjacent to the tip side A wide upper cambered lower jaw part having a surface shape capable of being attached to the back surface of the upper warped upper jaw part of the first tool body is formed on the upper handle. A second tool body formed on the upper part, the first tool body and the second tool body have their respective pivotally attached parts in abutment shape, and the second tool body has a second warp-shaped upper jaw rear surface.
The tool body is combined with a crossover structure including a state in which the warp-shaped lower jaw surface can be attached, and the first tool body and the second tool body correspond to each other in a plurality of through holes of each pivotally attached portion. For the crimping of metal plate folded overlapped parts, in which the supporting shaft material is inserted through both the selected through holes so that the pivoting position of the supporting shaft material can be freely changed to form the first tool body and the second tool body in a scissor-like structure. tool. 2. A pivotally-attaching portion, which is capable of inserting a supporting shaft member and formed with a plurality of through-holes communicating with each other, through which the supporting shaft member is slidably movable, in the vicinity of the distal end side. Is a first tool body formed with a wide upper warp-shaped upper jaw, and a rear shank having a relatively long rear end side from the pivot portion, and an arrangement corresponding to the through hole of the first tool body. In the vicinity of the tip end side of the pivotal attachment portion formed with a plurality of through holes that allow the support shaft material to be inserted therethrough and communicate with each other by the communication portions that allow the support shaft material to slide freely, A wide upper cambered lower jaw part with a surface shape that can be attached to the back surface of the upper warped upper jaw part of the tool main body is formed, and the rear end side from the pivotal connection part is formed in a relatively long upper handle part A second tool body, wherein the first tool body and the second tool body have their respective pivotally attached portions in contact with each other, and the first tool body The first tool body and the second tool body combined with a crossover structure including a state in which the second tool body upper cambered lower jaw surface can be affixed to the upper cambered upper jaw back surface
The tool body is inserted into both of the corresponding selected through holes of the plurality of through holes of each of the pivotally attached portions so that the pivoting position of the support shaft is freely changeable, and the first tool body and the second tool body A tool for crimping overlapping metal plate folded parts formed by forming and in a scissor-like structure. 3. The clearance gap of the communicating portion between the respective through holes is formed to be smaller than the hollowed-out diameter of each of the through holes, while the supporting shaft member extends over at least the through holes of both tool bodies. The cross-section of the portion is formed of a wide cross-section portion substantially corresponding to the inner diameter of the through hole, and a narrow cross-section portion substantially orthogonal to the wide cross-section portion and substantially corresponding to the communicating portion gap gap. In the through hole, the support shaft member and the first tool main body or the second tool main body are provided with a temporary fixing means that can prevent the support shaft from rotating when the wide cross section of the support shaft is in an orthogonal posture to the communicating portion. The tool for crimping a folded-over metal plate overlapping portion according to claim 2, wherein the tool is formed between any of them. 4. The clearance gap of the communicating portion between the through holes is formed to be smaller than the hollowed-out diameter of each of the through holes, and one or both of the first tool main body and the second tool main body has a pivoting portion contact. The contact surface shall be an elliptical shape that includes all through holes, or shall be dug shallowly into a circular shape that includes individual through holes for each through hole to form a stepped through hole, while the supporting shaft material is the head. The insertion member, which includes a loose fitting portion connected to the insertion portion and a threaded portion linearly extending from the loose fitting portion, and a nut screwed into the threaded portion of the insertion member. Has a length such that it is loosely fitted in the through hole of either the first tool body or the second tool body, and the cross section of that portion has a wide cross-section portion substantially corresponding to the through hole inner diameter. Formed to consist of a narrow cross-section part that approximately corresponds to the clearance gap of the communication part on the side substantially orthogonal to the wide cross-section part At the boundary with the threaded portion having a diameter substantially corresponding to the communication portion gap gap that is continuous with the loose fitting portion, the width is equal to or less than the cross-sectional width of the slender cross-section portion in the loose fitting portion, and It is assumed that the restriction protrusion having a length and a thickness that can be accommodated in the oblong portion or the circular dug portion of the through hole is formed so as to project from the wide cross-section portion in both outward directions. Screw to the threaded part of
The metal plate according to claim 2, wherein the spindle member is temporarily fixed to the first tool body or the second tool body on the side not loosely fitted to the loose fitting portion by tightening. A tool for crimping folded overlaps.