Crimping tool for attaching metal fittings

Abstract

To provide a metal fitting caulking compression tool capable of suitably dealing with a use condition of greatly deforming one portion of metal fitting while slightly deforming the other portion by applying a concentrated pressing force to one compression piece 20 while applying a dispersed pressing force to the other compression piece 30.SOLUTION: The metal fitting caulking compression tool having a pincer or plier form comprises a pair of compression forces 20 and 30 that sandwich and compress metal fittings to be deformed. Regarding areas of the compression forces 20 and 30 which simultaneously abut against the metal fittings, the other compression piece 30 is provided wider left and right than one compression piece 20 so that the other compression piece 30 can be wider than one compression piece 20.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to a clamping tool for metal fitting caulking, which is in the form of pliers or a pair of clamping pieces that apply a pressing force to deform by sandwiching a metal fitting.

Background Art

[0002] As a clamping tool in the form of pliers having a pair of clamping pieces, a steel clamping plate is attached to the opposing surfaces of the left and right clamping portions of a pliers body made of a light alloy, locking ridges are arranged side by side, a cutting blade is vertically provided at the bottom, a screw hole is provided at the bottom of the clamping surface of the steel clamping plate with the core offset, upper and lower boss portions are protruding from the periphery of the screw hole, upper and lower fitting holes are recessed in the opposing surfaces of the clamping portion, upper and lower bolt holes are provided in the upper and lower fitting holes, an upper fixing bolt and a lower fixing bolt are screwed to fix the steel clamping plate to the clamping portion of the pliers body, a metal pivoting shaft is formed at the cross-axis attachment portion of the light alloy pliers body, a sliding cylinder is fitted over the outer peripheral surface of the bolt cylinder of the metal pivoting shaft, and a fluorine-based resin processing layer is formed on the outer peripheral surface of the axial sliding cylinder. A light alloy pliers (Patent Document 1) has been proposed. According to this, the form of the pair of clamping pieces can be adjusted by the steel clamping plate.

[0003] Further, as a clamping tool in the form of pliers having a pair of clamping pieces, it is composed of a metal tool body in which two clamping bodies with the base as a handle and the tip as a clamping action portion are crossed and the crossing portion is pivotally connected (pivoting shaft, axial long hole), and a resin clamping member attached to the clamping action portion. The clamping member has an appropriate clamping surface and an internal shape corresponding to the outer shape of the clamping action portion, and is formed in a downward-opening cap shape that can be crown-mounted. A locking structure (locking between the jaw portion and the locking step and the locking step) that is locked by the elasticity of the clamping member is provided between the tool body and the clamping member. A clamping tool (Patent Document 2) has been proposed.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

[0005] The problem that we aim to solve with conventional clamping tools for fastening metal fittings is that, in conventional designs, the pressing surfaces of a pair of clamping pieces are formed to be the same shape, and an equal pressing force is generated on each of the pair of clamping pieces. However, there is no proposal for a tool that applies concentrated pressing force to one clamping piece and distributed pressing force to the other clamping piece, and therefore it cannot accommodate usage conditions that require deforming one part of the metal fitting significantly and the other part slightly.

[0006] Therefore, the object of the present invention is to provide a clamping tool for attaching metal fittings that can suitably accommodate usage conditions in which one part of the metal fitting is deformed significantly and the other part is deformed slightly by applying concentrated pressing force to one clamping piece and distributed pressing force to the other clamping piece. [Means for solving the problem]

[0007] To achieve the above objective, the present invention comprises the following configuration. According to one embodiment of the clamping tool for attaching metal fittings according to the present invention, the clamping tool for attaching metal fittings is in the form of pliers or pincers and has a pair of clamping pieces that clamp a metal fitting and apply pressing force to deform it, wherein the area of ​​the pair of clamping pieces that simultaneously contact the metal fitting is wider on the left and right side than that of the other clamping piece, compared to the other clamping piece.

[0008] According to one embodiment of the clamping tool for fastening metal fittings according to the present invention, the tool comprises a pair of gripping pieces for operating pliers or pincers, wherein one clamping piece is integrally provided on the tip of the first gripping piece, and the other clamping piece is provided so as to be detachably attached to the tip of the other gripping piece. According to one embodiment of the clamping tool for fastening metal fittings according to the present invention, the other gripping piece is provided with a projection for mounting that extends toward the tip, and the other clamping piece is provided with a fitting hole for mounting that fits into the projection for mounting.

[0009] According to one embodiment of the clamping tool for fastening metal fittings according to the present invention, the other clamping piece is provided with two surfaces that are in a front-back relationship, a first pressure receiving surface and a second pressure receiving surface that receive the pressing force generated when the metal fitting is clamped between the pressing surface of the first clamping piece and the pressing surface of the first clamping piece.

[0010] According to one embodiment of the clamping tool for fastening metal fittings according to the present invention, the angle of the drilling direction of the fitting hole for fastening is provided to be different for the first pressing surface and the second pressing surface, such that the angle between the surfaces of the first pressing surface and the pressing surface of one of the clamping pieces is different.

[0011] According to one embodiment of the clamping tool for fastening metal fittings according to the present invention, the fitting hole for fastening is provided so as to penetrate from one end to the other end of the other clamping piece, and is provided so as to be attachable to the projection to be fastened from either the one end or the other end of the other clamping piece.

[0012] According to one form of the clamping tool for fitting metal fittings of the present invention, at least a part of the pressing surface facing the pressing receiving surface of the other clamping piece part in the one clamping piece part is a surface inclined so as to be a surface that gradually widens the distance from the pressing receiving surface from the tip of the pressing surface toward the rear.

Effect of the Invention

[0013] According to the clamping tool for fitting metal fittings of the present invention, by applying a pressing force concentrated on one clamping piece part and applying a dispersed pressing force to the other clamping piece part, it is possible to suitably cope with usage conditions such as greatly deforming one part of the metal fitting and slightly deforming the other part, and a particularly advantageous effect is achieved.

Brief Explanation of the Drawings

[0014] [Figure 1] It is a perspective view showing a form example of the clamping tool for fitting metal fittings according to the present invention. [Figure 2] It is a front view of the form example of FIG. 1. [Figure 3] It is a rear view of the form example of FIG. 1. [Figure 4] It is a plan view of the form example of FIG. 1. [Figure 5] It is a bottom view of the form example of FIG. 1. [Figure 6] It is a left side view of the form example of FIG. 1. [Figure 7] It is a right side view of the form example of FIG. 1. [Figure 8] It is a perspective view showing another form example of the clamping tool for fitting metal fittings according to the present invention. [Figure 9] It is a perspective view showing a form example of the other fitting member according to the present invention. [Figure 10] It is a front view of the form example of FIG. 8. [Figure 11] It is a rear view of the form example of FIG. 8. [Figure 12] It is a plan view of the form example of FIG. 8. [Figure 13] It is a bottom view of the form example of FIG. 8. [Figure 14]It is a left side view of the form example of FIG. 8. [Figure 15] It is a right side view of the form example of FIG. 8. [Figure 16] It is a perspective view showing a form example of a clamping tool for fitting a fitting according to the present invention, to which another form example of the other fitting member according to the present invention is attached. [Figure 17] It is a front view showing a form example of a plier for fitting a fitting according to the present invention. [Figure 18] It is a plan view of the form example of FIG. 17. [Figure 19] It is a plan view showing the other gripping piece portion of the form example of FIG. 17. [Figure 20] It is a rear view showing the other gripping piece portion of the form example of FIG. 17. [Figure 21] It is a left side view showing the other gripping piece portion of the form example of FIG. 17. [Figure 22] It is a front view showing one gripping piece portion of the form example of FIG. 17 with a solid line. [Figure 23] It is a plan view showing one gripping piece portion of the form example of FIG. 17. [Figure 24] It is a left side view showing one gripping piece portion of the form example of FIG. 17. [Figure 25] It is a front view showing the use state of the form example of FIG. 17. [Figure 26] It is a front view of the state where a pair of clamping piece portions are closed from the state of FIG. 25. [Figure 27] It is a perspective view showing a form example of a clamping tool for fitting a fitting according to the present invention, in which the other clamping piece portion is provided detachably. [Figure 28] It is a perspective view showing the state where the other clamping piece portion of the form example of FIG. 27 is removed. [Figure 29] It is a perspective view showing the form example of FIG. 27, in which a spring (torsion spring) is mounted between a pair of gripping piece portions and a magnet is mounted to hold the mounting state of the other clamping piece portion. [Figure 30] It is a side view showing the state where the other clamping piece portion in the form example of FIG. 27 is mounted in the first form. [Figure 31]This is a side view showing the other clamping piece in the example configuration of Figure 27 attached to the second configuration. [Figure 32] This is a side view showing the other clamping piece in the embodiment example of Figure 27 attached to the third embodiment. [Figure 33] This is a side view showing the other clamping piece in the embodiment example of Figure 27 attached to the fourth embodiment. [Modes for carrying out the invention]

[0015] Hereinafter, examples of the form of the clamping tool for fastening metal fittings according to the present invention will be described in detail based on the drawings (Figures 1 to 16). This clamping tool for fastening metal fittings has the form of pliers or pincers and is equipped with a pair of clamping pieces 20, 30 and a pair of gripping pieces 11, 12 that clamp the metal fitting and apply pressing force to deform it.

[0016] According to the clamping tool for fastening metal fittings according to the present invention, the clamping piece 30 is provided with a wider width on the left and right than the clamping piece 20, so that the area of ​​the pair of clamping pieces 20 and 30 that simultaneously contact the metal fitting is wider on the other clamping piece 30 than on the other clamping piece 20.

[0017] In other words, as shown in Figure 1, the shape of the other clamping piece 30 is wider in the left-right direction (width direction), which is the direction that intersects (in this embodiment, substantially perpendicular to) the direction in which the metal fitting to be crimped enters between the pair of clamping pieces 20 and 30, resulting in a large contact area with the metal fitting. In this embodiment, the width of the other clamping piece 30 is set to be approximately three times the width of the other clamping piece 20.

[0018] Examples of metal fittings include clasps for coin purses and edge fasteners used on products such as bags. These fittings are metal components with a U-shaped cross-section and are fixed to the object to which they are attached, such as coin purses or bags, by crimping. When fixing the clasp for a coin purse, inserting one clamping piece 20 into the inside of the coin purse and pressing the receiving surface 31 of the other clamping piece 30 against the surface of the clasp exposed on the outside of the coin purse makes the work easier and results in a neater finish.

[0019] This clamping tool for attaching metal fittings applies concentrated pressure to the fitting with one clamping piece 20 and dispersed pressure with the other clamping piece 30, resulting in a particularly advantageous effect that can suitably accommodate usage conditions such as significantly deforming one part of the fitting and slightly deforming the other part. Specifically, in this embodiment, the width of the other clamping piece 30 is set to be approximately three times the width of the one clamping piece 20. As a result, the part of the fitting that is pressed against the pressing surface 21 of the one clamping piece 20 is crimped in such a way that it deforms significantly, while the part of the fitting that is pressed against the pressing receiving surface 31 of the other clamping piece 30 experiences dispersed pressure, resulting in less deformation and less damage to the surface of that part, which is a particularly advantageous effect.

[0020] In this embodiment, the pressing surface 21 of one clamping piece 20 that faces the pressing surface 31 of the other clamping piece 30 is composed of a pressing surface 21a at the tip, which is the surface that is close to the pressing surface 31 of the other clamping piece 30, and a pressing surface 21b at the rear end, which is the surface that is inclined to gradually increase in distance from the pressing surface 31 of the other clamping piece 30 as it moves backward from the pressing surface 21a at the tip.

[0021] According to this, compared to the pressing receiving surface 31 of the other clamping piece 30, in the initial stages of the crimping process when the pressing surface 21 of one clamping piece 20 contacts one part of the metal fitting, the area of ​​the pressing surface 21 is small and narrow, consisting only of the pressing surface 21a at the tip, thus further concentrating the pressing force. Therefore, the pressing force for crimping is easily concentrated on the surface of one part of the metal fitting, and the metal fitting can be firmly fixed to the mounting part, such as the rim of a coin purse, by appropriately crushing and deforming that one part. On the other hand, the pressing force on the other part of the metal fitting is dispersed and it is less likely to deform, and the metal fitting can be fixed to the mounting part with a good finish without damaging the surface of the other part of the metal fitting. Since the surface of this other part of the metal fitting is the surface exposed to the outside of the coin purse, a coin purse with a beautiful appearance can be made.

[0022] Furthermore, in this embodiment, a receiving surface 37 in the direction of metal fitting insertion is provided on at least one of the pair of clamping pieces 20 and 30 so as to restrict the length to which the metal fitting enters between the pair of clamping pieces 20 and 30 when the metal fitting is clamped by the pair of clamping pieces 20 and 30.

[0023] According to this, for example, when fixing the clasp of a coin purse to the rim of the coin purse, the crimping work can be performed appropriately. That is, for example, the metal fitting that constitutes the clasp of the coin purse is formed in a U-shape in cross-section and is fixed so as to frame the rim of the coin purse with a required width, and a receiving surface 37 in the direction in which the fitting enters is provided so that the length of the required width matches the length that the fitting can enter between the pair of clamping pieces 20, 30, and by bringing the outer surface of the U-shaped bent portion of the fitting into contact with the receiving surface 37 in the direction in which the fitting enters, the position of the fitting can be easily determined and the crimping work can be easily performed. In addition, the pressing surface 21b at the rear end forms a relief portion 21c for pressing. As a result, for example, the U-shaped bent portion of the clasp of the coin purse can be finished neatly without being crushed.

[0024] Furthermore, in an advanced embodiment of the present invention, the receiving surface 37 in the direction of metal fitting entry is provided on the other clamping piece 30 so as to be a surface parallel to the direction in which the pressing force is applied, and the receiving plate portion 32 constituting the pressing receiving surface 31 is provided separately from the receiving base portion 33 constituting the base of the other clamping piece 30, and is arranged to be movable by being guided by the receiving surface 37 in the direction of metal fitting entry so as to be able to adjust the distance between it and the pressing surface 21 of one of the clamping piece portions 20.

[0025] According to this, the receiving plate portion 32 can be slid and adjusted along the receiving surface 37 in the direction of metal fitting entry, so that the distance between the clamping piece portion 20 and the pressing surface 21 can be stably changed and maintained. In other words, although it is a simple configuration, it can be easily adjusted to appropriately accommodate various sizes of metal fittings and to perform crimping work properly.

[0026] In this embodiment, the means 35 for moving the receiving plate portion to adjust the distance between the pressing receiving surface 31 and the pressing surface 21 is a screw-type moving mechanism. In this embodiment, as shown in Figure 1 and other figures, an operating nut 36 is placed in a slit portion 34 provided in the receiving surface base portion 33, and a bolt portion 32a, which is fixed to the lower surface of the receiving plate portion 32 opposite to the pressing receiving surface 31 and extends downward, is screwed into the operating nut 36. The bolt portion 32a is also inserted through and held in through holes provided in the upper part 33a and lower part 33b of the receiving surface base portion 33 where the slit portion 34 is formed.

[0027] According to this, by rotating the operating nut 36, the height position of the receiving plate portion 32 can be appropriately adjusted without the operating nut 36 falling off. In other words, the distance between the pressing receiving surface 31 and the pressing surface 21 can be adjusted steplessly, thus increasing versatility.

[0028] Next, other embodiments of the present invention will be described in detail with reference to Figures 8 to 16. In another embodiment of this invention, a fitting member for adjusting the spacing is provided so as to be attached to at least one of the pair of clamping pieces 20 and 30, so that the spacing between the pressing surface 21 and the receiving surface 31 of the pair of clamping pieces 20 and 30 can be changed to accommodate different types of metal fittings.

[0029] According to this, the distance between the pressing surface 31 and the pressing surface 21 can be adjusted in stages, allowing for clamping in accordance with different types of metal fittings, thereby increasing versatility. In other words, by providing multiple fitting members for adjusting the distance, multiple conditions regarding the distance between the pressing surface 31 and the pressing surface 21 can be accommodated. Furthermore, since this fitting member 40 for adjusting the distance is made of a material softer than the metal fitting (such as resin), it is possible to prevent damage to the metal fitting and perform the crimping work smoothly.

[0030] Furthermore, in this embodiment, as shown in Figures 8 to 16, the spacing adjustment fitting members are composed of a pair of fitting members, one fitting member 41 and the other fitting member 42, and are attached to both sides of the pair of clamping pieces 20 and 30. In this embodiment, one fitting member 41 is fixed to one of the clamping pieces 20, while the other fitting member 42 is provided to be detachable from the other clamping piece 30. That is, one fitting member 41 has a groove formed therein, and is designed to be fixed by fitting into the protruding grooves formed on the side of the pair of clamping pieces 20. As for the other fitting member 42, as shown in Figure 9, a pair of mounting protrusions 42a, 42a are provided on the bottom surface, and the pair of mounting protrusions 42a, 42a are designed to be attached by fitting into a pair of mounting holes 39, 39 (see Figure 13) formed on the other clamping piece 30. Furthermore, as shown in Figure 16, the other fitting member 42 can be easily adjusted by replacing it with one of a different thickness. In the example shown in Figure 16, the other fitting member 42 is formed to be thicker than those shown in Figures 8-15, allowing the gap between the pressing surface 21 and the pressing surface 31 to be appropriately narrowed.

[0031] The clamping tool for attaching metal fittings according to the present invention is in the form of pliers or pincers. In the example shown in the figure, it is equipped with a pair of gripping pieces 11 and 12, where one gripping piece 11 is a member integrally formed with one clamping piece 20, and the other gripping piece 12 is a member integrally formed with the other clamping piece 30. Both members are pivotally mounted by a pivot 13, and the pair of clamping pieces 20 and 30 open and close, forming a pair of pliers that can clamp or grip an object. The present invention is not limited to the example of pliers shown in the figure, and may also be equipped with elongated holes with multiple parts that the pivot 13 locks into, like pincers.

[0032] Furthermore, in the examples of configurations shown in Figures 17 to 26 (examples of plier configurations), at least a portion of the pressing surface 21 of one clamping piece 20 that faces the pressing receiving surface 31 of the other clamping piece 30 is inclined such that the distance from the pressing receiving surface 31 gradually increases from the tip of the pressing surface 21 toward the rear.

[0033] In other words, the pressing surface 21 and the pressing receiving surface 31 are arranged in a tapered shape so that a space (relief portion 21c) is formed between them, which slopes and widens from the tip towards the rear. In this example of pliers, both the pressing surface 21 and the pressing receiving surface 31 are tapered surfaces that slope toward each other over their entire length from the tip to the rear end. As explained in the above example, the presence of the relief portion 21c prevents, for example, the U-shaped bent portion of the clasp that forms the outer edge of the opening of a coin purse from being excessively crimped and crushed, allowing for a clean finish.

[0034] Furthermore, in this example of pliers design, as shown in Figures 18 and 24, the jaws of the pressing surface 21 are narrower in width in the left-right direction, and the pressing surface 21 (one of the clamping pieces 20) is designed to taper towards the end. This makes it easier to concentrate the pressing force towards the tip of the pressing surface 21, making it easier to apply the correct pressing force and improving the workability of the crimping process.

[0035] In this example of pliers, the pivot shaft (13) that rotates to open and close a pair of clamping pieces 20 and 30 is positioned on the side of one of the two axis centers of a pivot engagement hole 15, which has two axis centers arranged in a shape where parts of two circles overlap, thereby allowing the opening and closing size of the pair of clamping pieces 20 and 30 to be changed. In this example, the pivot engagement hole 15 is located on the side of the other clamping piece 30. Also in this example, the handle portion is covered with urethane to form an easy-to-grip handle (a pair of gripping pieces 11 and 12).

[0036] Next, an example of a clamping tool for attaching metal fittings according to the present invention, in which the other clamping piece 30 is detachably provided, will be described in detail with reference to Figures 27 to 33.

[0037] In this embodiment, as shown in Figures 27 and 28, the tool comprises a pair of gripping pieces for operating pliers or pincers, one gripping piece 11 and the other gripping piece 12. One clamping piece 20 is integrally provided on the tip of the one gripping piece 11, and the other clamping piece 30 is detachably attached to the tip of the other gripping piece 12. This allows the other clamping piece 30 to be replaced as needed.

[0038] Furthermore, in this embodiment, the other gripping piece 12 is provided with a projection 12a for attachment that extends toward the tip, and the other clamping piece 30 is provided with a fitting hole 30a for attachment that fits into the projection 12a for attachment. More specifically, the projection 12a for attachment in this embodiment is a rectangular parallelepiped in the shape of a strip, as shown in Figures 28 and 29, with the longitudinal direction of the rectangular parallelepiped projecting toward the tip, and the rectangular cross-section from the tip to the base being substantially the same rectangular shape. It should be noted that the present invention is not limited to the projection 12a for attachment in this embodiment, and any shape that can be appropriately inserted into and removed from the fitting hole 30a for attachment and that can properly fix the other clamping piece 30 to the tip of the other gripping piece 12 is acceptable, such as a shape with a groove in the longitudinal direction or a shape with two (or more) projections. According to this, the other clamping piece 30 can be easily and appropriately attached to the tip of the other gripping piece 12.

[0039] As shown in Figure 29, the other clamping piece 30 is fitted onto the tip of the other gripping piece 12, with the spring 50 (a torsion spring in this embodiment) mounted between the pair of gripping pieces 11 and 12, and with a magnet 60 mounted to hold the other clamping piece 30 in place. In other words, the magnet 60 is fixed to the base of the projection 12a to be attached, so that the other clamping piece 30 is secured by magnetic force and does not detach from the other gripping piece 12. This allows the other clamping piece 30 to be easily and appropriately attached to the tip of the other gripping piece 12 in a detachable manner.

[0040] Furthermore, the other clamping piece 30 of this embodiment is provided with two surfaces that are in a front-back relationship, a first pressure receiving surface 31a and a second pressure receiving surface 31b, which receive the pressing force generated when a metal fitting such as a clasp of a coin purse is clamped between them and the pressing surface 21 of the first clamping piece 20.

[0041] According to this, as shown in Figures 30 and 31, by reversing the front and back sides of the other clamping piece 30, the other clamping piece 30 can be attached to the tip of the other gripping piece 12 in each respective configuration. That is, in the state shown in Figure 30, the pair of clamping pieces 20 and 30 are configured to form a first mounting configuration in which the metal fitting can be clamped between the pressing surface 21 of one clamping piece 20 and the first pressing receiving surface 31a, and in the state shown in Figure 31, the pair of clamping pieces 20 and 30 are configured to form a second mounting configuration in which the metal fitting can be clamped between the pressing surface 21 of one clamping piece 20 and the second pressing receiving surface 31b.

[0042] In this embodiment, the angles of the mounting fitting holes 30a for the first and second pressing surfaces 31a and 31b are different, so that the angles between the surfaces of the first pressing surface 31a and the second pressing surface 31b and the pressing surface 21 of one of the clamping pieces 20 are different.

[0043] According to this, in the state shown in Figure 30, the pressing surface 21 of one clamping piece 20 and the first pressing receiving surface 31a of the other clamping piece 30 are configured to be substantially parallel to each other. Then, in the state shown in Figure 31, the other clamping piece 30 is inverted from the state shown in Figure 30 (first mounting configuration) and attached to the tip of the other gripping piece 12 (the projection 12a to be attached) (second mounting configuration), and the distance between the pressing surface 21 of one clamping piece 20 and the second pressing receiving surface 31b of the other clamping piece 30 is configured to gradually widen from the tip towards the rear.

[0044] In this embodiment, the fitting hole 30a for mounting is provided so as to penetrate from one end 30b to the other end 30c of the other clamping piece 30, and the other clamping piece 30 can be attached to the projection 12a to be mounted from either the one end 30b or the other end 30c.

[0045] According to this, as shown in Figures 32 and 33, by reversing the front and rear of the other clamping piece 30, the other clamping piece 30 can be attached to the tip of the other gripping piece 12 in each respective configuration. That is, in the state shown in Figure 32, the front and rear of the other clamping piece 30 are reversed from the state shown in Figure 30 (first mounting configuration), and the projection 12a for attachment is inserted from one end 30b of the other clamping piece 30, so that the metal fitting can be clamped between the pressing surface 21 of one clamping piece 20 and the first pressing receiving surface 31a, thus forming a third mounting configuration in which the pair of clamping pieces 20 and 30 are configured. Furthermore, in the state shown in Figure 33, the front and rear of the other clamping piece 30 are reversed from the state shown in Figure 31 (second mounting configuration), and the projection 12a for attachment is inserted from one end 30b of the other clamping piece 30, so that the metal fitting can be clamped between the pressing surface 21 of one clamping piece 20 and the second pressing receiving surface 31b, thus forming a fourth mounting configuration in which the pair of clamping pieces 20 and 30 are configured.

[0046] Thus, according to this embodiment, with the other clamping piece 30 attached to the tip of the other gripping piece 12, four different configurations can be achieved, namely the first to fourth forms, in which the closing angles between the pressing surface 21 of one clamping piece 20 and the pressing receiving surface 31 (31a, 31b) of the other clamping piece 30 are different. Therefore, one of these first to fourth forms can be used according to the shape of the fitting, allowing for more appropriate crimping work. In the third form shown in Figure 32, the closing angle between the pressing surface 21 of one clamping piece 20 and the pressing receiving surface 31 (31a) of the other clamping piece 30 is the largest, and in this closed state, the distance between the two surfaces widens in a tapered manner from the tip towards the rear.

[0047] Furthermore, in this embodiment, one of the gripping pieces 11 has a folded piece 11a that is folded at approximately a right angle to the rear end. This folded piece 11a can be used, for example, when inserting the end of the cloth that makes up the pouch of a coin purse into the groove of the clasp, which is formed in a U-shape in cross-section, along with a paper string, and then pressing both into the groove of the clasp while pushing them in. Thus, although there have been conventional insertion tools specifically for coin purses, this folded piece 11a can be used as a substitute.

[0048] Although various preferred embodiments of the present invention have been described above, the present invention is not limited to these embodiments, and many modifications can be made without departing from the spirit of the invention. [Explanation of Symbols]

[0049] 11 One gripping piece 11a Folded section 12 The other gripping piece 12a Projection for attachment 13 Axis 15 Shaft engagement hole 20 One of the clamping pieces 21 Pressing surface 21a Pressing surface at the tip 21b Pressing surface at the rear end 21c Escape Club 30 Other clamping piece 30a Fitting hole for mounting 30b one end 30c other end 31 Pressure receiving surface 31a First pressure receiving surface 31b Second pressure receiving surface 32 Receiver plate part 32a Bolt section 33 Base of receiving surface 33a upper part 33b bottom 34 Slit section 35 Moving means of the receiving plate 36 Operating nut 37 Receiving surface in the direction of metal fitting entry 39 Mounting hole 41 One fitting member 42 Other fitting member 42a Mounting protrusion 50 Spring 60 magnets

Claims

1. A clamping tool for attaching and crimping metal fittings, in the form of pliers or pincers, having a pair of clamping pieces that clamp and apply pressure to deform the metal fitting, Regarding the area in which the pair of clamping pieces simultaneously contact the metal fitting, the other clamping piece is provided wider on the left and right than the other clamping piece, such that the other clamping piece is wider on the left and right than the one clamping piece. The aforementioned pliers or pincers are provided with a pair of gripping pieces, one gripping piece and the other gripping piece, The aforementioned clamping piece is integrally provided with the tip of the aforementioned gripping piece. The other clamping piece is provided so as to be detachably attached to the tip of the other gripping piece, The other gripping piece has a projection extending in the direction of the tip for attachment, and the other clamping piece has a fitting hole for attachment that fits into the projection for attachment. A clamping tool for attaching and crimping metal fittings, characterized in that the other clamping piece is provided with two surfaces that are in a front-back relationship, a first pressure receiving surface and a second pressure receiving surface that receive the pressing force generated when the metal fitting is clamped between the pressing surface of the first clamping piece and the pressing surface of the other clamping piece.

2. The clamping tool for mounting and riveting metal fittings according to claim 1, characterized in that the angles between the first and second pressing surfaces and the pressing surface of one of the clamping pieces are different, and the angles of the drilling direction of the mounting fitting hole relative to the first and second pressing surfaces are different.

3. The clamping tool for attaching metal fittings according to claim 2, characterized in that the fitting hole for attachment is drilled to penetrate from one end to the other end of the other clamping piece, and is provided so that it can be attached to the projection to be attached from either the one end or the other end of the other clamping piece.

4. A clamping tool for attaching metal fittings according to any one of claims 1 to 3, characterized in that at least a portion of the pressing surface of one clamping piece that faces the pressing receiving surface of the other clamping piece is inclined such that the distance from the pressing receiving surface gradually increases from the tip of the pressing surface toward the rear.

Images