Method for manufacturing attachment plug

Abstract

To provide a method for manufacturing an attachment plug which can increase the productivity.SOLUTION: A method for manufacturing an attachment plug includes: a terminal plate formation step of forming a carrier 1 by performing shearing processing on a hoop material 100, and forming a plurality of terminal plates 10 connected to the carrier 1 separately in the longer direction of the carrier 1; a bending step of folding a base part 12 of the terminal plate 10 connected to the carrier 1 and forming a bending part 13 in the base part 12; and a connection separation step of connecting a cable to a cable connection part 14 of the terminal plate 10 with the bending part 13 formed and cutting off the terminal plate 10 from the carrier 1.SELECTED DRAWING: Figure 3

Description

[Technical field]

[0001] The present invention relates to a method for manufacturing an attachment plug. [Background technology]

[0002] 2. Description of the Related Art Conventionally, a method for manufacturing a connector is known (see, for example, Patent Document 1).

[0003] The manufacturing method of the connector in Patent Document 1 includes a terminal forming step, a core forming step, a cutting step, an assembly step, and an element mounting step. In the terminal forming step, a hoop material is pressed to form a pair of terminal fittings arranged side by side on one side of the carrier. In the core forming step, a core is formed for each pair of terminal fittings by insert molding. In the cutting step, the pair of terminal fittings with the core attached are cut from the carrier. In the assembly step, the cores of the cut pair of terminal fittings are assembled to the connector housing. In the element mounting step, an electric element is mounted to the element connection portion of the pair of terminal fittings. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2011-198684 A Summary of the Invention [Problem to be solved by the invention]

[0005] Here, it is also desirable to improve the productivity of the attachment plug having a pair of terminal boards.

[0006] The present invention has been made in order to solve the above-mentioned problems, and an object of the present invention is to provide a method for manufacturing an attachment plug that can improve productivity. [Means for solving the problem]

[0007] The method for manufacturing an attachment plug according to the present invention is for manufacturing an attachment plug having a pair of terminal plates. The terminal plates include blade portions, a cable connecting portion, and a base portion provided between the blade portions and the cable connecting portion, and a bent portion is formed at the base portion. The method for manufacturing an attachment plug includes a terminal plate forming step of forming a carrier by shearing a hoop material and forming a plurality of terminal plates connected to the carrier at intervals in the longitudinal direction of the carrier, a bending step of bending the base portions of the terminal plates connected to the carrier to form bent portions at the base portions, and a separating step of separating the terminal plates with the bent portions formed thereat from the carrier.

[0008] The method for manufacturing the attachment plug described above may further include a holding member forming step, which is performed after the bending step and before the separating step, of forming holding members for holding the pair of terminal boards.

[0009] In the method for manufacturing an attachment plug including the above-mentioned retaining member forming step, the hoop material may include first to third parts having different thicknesses in the width direction, the first part is arranged on one side in the width direction and the third part is arranged on the other side in the width direction, the second part is arranged between the first and third parts, and the second part is thicker than the first part and the third part is thicker than the second part, the carrier and the cable connection part are formed by the first part, the base and the base end side of the blade parts are formed by the second part, and the tip side of the blade parts are formed by the third part, and the retaining member may have a main body part that holds the base parts of the pair of terminal plates and a tracking prevention part that covers the base end sides of the blade parts of the pair of terminal plates.

[0010] The method for manufacturing the attachment plug may further include a cable connecting step of connecting a cable to the cable connecting portion.

[0011] In the method for manufacturing the attachment plug including the above-mentioned cable connecting step, the separating step and the cable connecting step may be performed simultaneously.

[0012] In the above-mentioned method for manufacturing an attachment plug, widths of the blade portions of the pair of terminal plates may be set to be the same.

[0013] In the above-mentioned method for manufacturing an attachment plug, the blade portions of the pair of terminal plates may be set to have different widths. Effect of the Invention

[0014] According to the method for producing an attachment plug of the present invention, it is possible to improve productivity. [Brief description of the drawings]

[0015] [Figure 1] 10 is a plan view for explaining a terminal board forming step in the manufacturing method of the attachment plug of the present embodiment. FIG. [Diagram 2] FIG. 2 is a view of the hoop material in FIG. 1 as seen from the conveying direction. [Diagram 3] 10 is a perspective view for explaining a bending step in the manufacturing method of the attachment plug of the present embodiment. FIG. [Figure 4] FIG. 4 is a plan view showing the hoop material of FIG. 3. [Diagram 5] 5 is a view of the hoop material in FIG. 4 as seen from the conveying direction. [Figure 6] 10 is a perspective view for explaining a holding member forming step of the manufacturing method of the attachment plug of the present embodiment. FIG. [Figure 7] FIG. 7 is a perspective view of the hoop material of FIG. 6 seen from a different angle. [Figure 8] FIG. 7 is a plan view showing the hoop material of FIG. 6. [Figure 9] FIG. 9 is a view of the hoop material in FIG. 8 as seen from the conveying direction. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0016] Hereinafter, one embodiment of the present invention will be described.

[0017] First, a method for manufacturing an attachment plug according to one embodiment of the present invention will be described with reference to FIGS.

[0018] The attachment plug manufactured by this manufacturing method is a type A power plug, and has a pair of terminal boards 10. The attachment plug is configured so that the terminal boards 10 can be inserted into a socket of a receptacle (not shown). In the manufacturing method of the attachment plug, the pair of terminal boards 10 are formed using a hoop material 100.

[0019] The hoop material 100 is a metal conductor such as brass (C2680) and is formed in a strip shape. The hoop material 100 can be wound around a reel (not shown) and can be unwound from the reel. As shown in Fig. 2, the hoop material 100 is formed to have different thicknesses in the width directions (Y1 and Y2 directions), and has a thin portion 100a, a medium portion 100b, and a thick portion 100c.

[0020] The thin portion 100a is disposed on one side in the width direction (Y1 direction side), and the thick portion 100c is disposed on the other side in the width direction (Y2 direction side). The middle portion 100b is disposed between the thin portion 100a and the thick portion 100c in the width direction. The middle portion 100b is thicker than the thin portion 100a, and the thick portion 100c is thicker than the middle portion 100b. For example, the thickness of the thin portion 100a is 0.65 mm, the thickness of the middle portion 100b is 1.35 mm, and the thickness of the thick portion 100c is 1.5 mm. The thin portion 100a is an example of the "first portion" of the present invention, the middle portion 100b is an example of the "second portion" of the present invention, and the thick portion 100c is an example of the "third portion" of the present invention.

[0021] The method for manufacturing the attachment plug includes a terminal board forming step, a bending step, a holding member forming step, a connection / separation step, and an outer shell forming step. The connection / separation step is an example of the "separation step" and the "cable connection step" of the present invention.

[0022] [Terminal board forming process] First, the hoop material 100 is unwound from the reel and transported to a terminal plate forming facility (not shown). In the terminal plate forming facility, the hoop material 100 is sheared using a press (not shown). By shearing the hoop material 100, as shown in FIG. 1, a carrier 1 is formed, and a plurality of terminal plates 10 connected to the carrier 1 via connecting parts 2 are formed. The carrier 1 is disposed on one side in the width direction (Y1 direction side) and is formed so as to extend in the conveying direction of the hoop material 100. The plurality of terminal plates 10 are disposed on the other side in the width direction (Y2 direction side) of the carrier 1 and are arranged at intervals in the longitudinal direction (X1 and X2 directions) of the carrier 1. Each terminal plate 10 is formed so as to extend in a direction perpendicular to the longitudinal direction of the carrier 1 (Y2 direction).

[0023] Here, one attachment plug is manufactured using two adjacent terminal boards 10 among the multiple terminal boards 10 arranged along the longitudinal direction of the carrier 1. One of the pair of terminal boards 10 of the attachment plug is formed using terminal board 10a, and the other of the pair of terminal boards 10 of the attachment plug is formed using terminal board 10b. Therefore, the terminal boards 10a and 10b are alternately provided in the longitudinal direction of the carrier 1. Each terminal board 10 includes a blade portion 11, a base portion 12, and a cable connection portion 14f.

[0024] The blade portion 11 is the portion of the attachment plug that is inserted into the socket of the outlet, and is formed to extend in the Y2 direction from the base portion 12. A circular hole 11h is formed in the blade portion 11. When the blade portion 11 of the attachment plug is inserted into the socket of the outlet, a blade receiving spring in the outlet fits into the hole 11h.

[0025] Base 12 is provided between blade portion 11 and cable connecting portion 14f. Base 12 is formed with notch 12s and is provided with bent portion 13p. Specifically, in base 12 of terminal board 10a, notch 12s is formed to extend in the X1 direction, and an open end of notch 12s is disposed to face terminal board 10b. In addition, in base 12 of terminal board 10b, notch 12s is formed to extend in the X2 direction, and an open end of notch 12s is disposed to face terminal board 10a. That is, the open end of notch 12s of terminal board 10a and the open end of notch 12s of terminal board 10b are disposed to face each other.

[0026] The cable connection portion 14f is provided for connecting a cable (not shown) to the terminal board 10. The cable connection portion 14f is formed in a substantially rectangular flat plate shape. One end portion (the end portion on the Y1 direction side) of the cable connection portion 14f is connected to the carrier 1 via the connecting portion 2, and the connecting portion 2 is disposed in the middle portion of the cable connection portion 14f in the longitudinal direction (X1 and X2 directions). The other end portion (the end portion on the Y2 direction side) of the cable connection portion 14f is connected to the base portion 12 in the middle portion in the longitudinal direction.

[0027] Specifically, in terminal board 10a, cable connection portion 14f is connected to the end of base 12 on the X2 direction side, and in terminal board 10b, cable connection portion 14f is connected to the end of base 12 on the X1 direction side. In terminal board 10a, portion to be bent 13p is disposed adjacent to the connection portion between cable connection portion 14f and base 12 on the X1 direction side. In terminal board 10b, portion to be bent 13p is disposed adjacent to the connection portion between cable connection portion 14f and base 12 on the X2 direction side. In other words, terminal boards 10a and 10b are formed to be line-symmetrical with respect to a line passing through the midpoints of terminal boards 10a and 10b and extending in the Y1 and Y2 directions when viewed in a plan view.

[0028] The carrier 1, the coupling portion 2, and the cable connecting portion 14f are formed of a thin portion 100a. The base portion 12 and the base end side of the blade portion 11 are formed of a medium portion 100b. The tip side of the blade portion 11 is formed of a thick portion 100c.

[0029] [Bending process] Then, after the hoop material 100 is subjected to shearing in the terminal plate forming equipment, the hoop material 100 is transported to bending equipment (not shown). Note that the hoop material 100 that has passed through the terminal plate forming equipment may be temporarily wound on a reel, and the hoop material 100 unwound from the reel may be transported to the bending equipment.

[0030] In the bending equipment, a press (not shown) is used to bend the hoop material 100. By bending the hoop material 100, the portion to be bent 13p of the base 12 of the terminal board 10 is bent and the cable connection portion 14f is also bent. As a result, as shown in Figures 3 to 5, a bent portion 13 is formed in the base 12 and the cable connection portion 14 is formed to have a V-shaped cross section.

[0031] By forming bent portion 13, blade portion 11 of terminal board 10a and blade portion 11 of terminal board 10b are arranged to face each other. That is, the portion of base 12 on the Y1 direction side is bent 90 degrees by bent portion 13. For example, the distance (center-to-center distance) between blade portion 11 of terminal board 10a and blade portion 11 of terminal board 10b is 12.7 mm. Furthermore, cable connection portion 14 has a V-shaped cross section, which makes it easier to position the cable conductor. The width of blade portion 11 of terminal board 10a and the width of blade portion 11 of terminal board 10b are set to be the same. For example, the width of blade portion 11 of terminal board 10a and 10b is 6.3 mm.

[0032] [Holding member formation process] Then, after the hoop material 100 is bent in the bending equipment, the hoop material 100 is transported to a retaining member forming equipment (not shown). Note that the hoop material 100 that has passed through the bending equipment may be temporarily wound on a reel, and the hoop material 100 unwound from the reel may be transported to the retaining member forming equipment.

[0033] In the retaining member forming facility, an injection molding machine (not shown) is used to insert-molde retaining member 15 into hoop material 100. As shown in Figures 6 to 9, retaining member 15 is an insulating material made of a resin such as polyamide or polypropylene, and is configured to integrate a pair of terminal boards 10.

[0034] Holding member 15 has a rectangular plate-shaped main body 15m and a pair of tracking prevention parts 15p extending in the Y2 direction from main body 15m. Main body 15m is formed to cover base 12 of terminal board 10a and base 12 of terminal board 10b, and is configured to hold terminal boards 10a and 10b. Tracking prevention parts 15p are formed in a cylindrical shape and configured to cover the base end side of blade part 11. Tracking prevention parts 15p are provided to prevent ignition due to insulation breakdown caused by adhesion of dust, moisture, etc. Holding member 15 is provided in middle wall part 100b.

[0035] [Connection and separation process] Then, after the retaining member 15 is insert molded into the hoop material 100 in the retaining member forming equipment, the hoop material 100 is transported to a connection and separation equipment (not shown). Note that the hoop material 100 that has passed through the retaining member forming equipment may be temporarily wound on a reel, and the hoop material 100 unwound from the reel may be transported to the connection and separation equipment.

[0036] In the connection and separation equipment, cables are connected to the cable connection portions 14 of the pair of terminal boards 10, respectively, and the pair of terminal boards 10 are separated from the carrier 1. That is, the connection of the cables to the pair of terminal boards 10 and the separation of the pair of terminal boards 10 from the carrier 1 are performed simultaneously. For example, the cable conductor is crimped to the cable connection portion 14 by squeezing the cable connection portion 14 on which the conductor of the cable is placed. In addition, the pair of terminal boards 10 to which the cable is connected is cut off from the carrier 1 by shearing at the coupling portion 2.

[0037] [Outer shell formation process] For example, an outer shell (not shown) is insert-molded on a pair of terminal boards 10 to which a cable is connected, using an injection molding machine (not shown). The outer shell is formed so as to cover the main body 15m of the holding member 15, the cable connection portion 14, etc. Also, the blade portion 11 and the tracking prevention portion 15p protrude from the outer shell, and the cable is drawn out from the outer shell. Alternatively, a box-shaped outer shell may be formed in advance, and the main body 15m of the holding member 15, the cable connection portion 14, etc. may be housed in the outer shell.

[0038] -effect- In this embodiment, as described above, a pair of terminal boards 10 are formed using the hoop material 100, thereby improving the productivity of the attachment plug.

[0039] In addition, in this embodiment, a retaining member 15 is formed for a pair of terminal boards 10 connected to the carrier 1, which makes it easier to position the pair of terminal boards 10 when forming the retaining member, thereby also improving productivity.

[0040] -Other embodiments- It should be noted that the embodiments disclosed herein are illustrative in all respects and are not intended to be limiting. Therefore, the technical scope of the present invention is not interpreted solely by the above-described embodiments, but is defined by the claims. The technical scope of the present invention includes all modifications within the scope and meaning equivalent to the claims.

[0041] For example, in the above embodiment, an example in which a holding member forming process is provided is shown, but this is not limited thereto, and the holding member forming process may not be provided, and the outer shell may be directly insert molded onto the pair of terminal plates.

[0042] In the above embodiment, an example in which the tracking prevention portion 15p is formed has been shown, but the present invention is not limited to this, and the tracking prevention portion may not be formed.

[0043] In the above embodiment, the pair of terminal boards 10 are set to have the same width, but the present invention is not limited to this, and the pair of terminal boards may have different widths. For example, the width of one terminal board (live side) may be 6.3 mm, and the width of the other terminal board (neutral side) may be 8 mm.

[0044] In the above embodiment, an example has been shown in which the pair of terminal boards 10 are connected to a cable and the pair of terminal boards 10 are separated from the carrier 1 at the same time, but the present invention is not limited to this, and the pair of terminal boards may be connected to a cable and the pair of terminal boards may be separated from the carrier at different times. For example, the pair of terminal boards may be connected to a cable after the pair of terminal boards are separated from the carrier. [Industrial Applicability]

[0045] The present invention can be used in a method of manufacturing an attachment plug having a pair of terminal boards. [Explanation of symbols]

[0046] 1. Career 10, 10a, 10b terminal board 11 Blade 12 Base 13 Bend 14 Cable connection 15 Retaining member 15m Main unit 15p Tracking prevention section 100 Hoop Material 100a Thin wall part (1st part) 100b Middle part (2nd part) 100c thick part (3rd part)

Claims

1. A method for manufacturing an attachment plug having a pair of terminal boards, comprising the steps of: the terminal board includes a blade portion, a cable connecting portion, and a base portion provided between the blade portion and the cable connecting portion, the base portion being formed with a bent portion; a terminal plate forming process for forming a carrier by shearing a hoop material and forming a plurality of terminal plates connected to the carrier at intervals in a longitudinal direction of the carrier; a bending step of bending a base portion of the terminal board connected to the carrier to form a bent portion at the base portion; and a separating step of separating the terminal board having the bent portion from the carrier.

2. 2. The method for manufacturing an attachment plug according to claim 1, A method for manufacturing an attachment plug, further comprising the step of forming a holding member for holding a pair of terminal boards after the bending step and before the separating step.

3. 3. The method for manufacturing an attachment plug according to claim 2, The hoop material includes first to third portions having different thicknesses in a width direction, the first portion is disposed on one side in a width direction, the third portion is disposed on the other side in a width direction, the second portion is disposed between the first portion and the third portion, and the second portion is made thicker than the first portion, and the third portion is made thicker than the second portion, the carrier and the cable connection portion are formed by the first portion, the base portion and a base end side of the blade portion are constituted by the second portion, A tip side of the blade portion is constituted by the third portion, A method for manufacturing an insertion plug, characterized in that the holding member has a main body portion that holds the base portions of the pair of terminal plates, and a tracking prevention portion that covers the base end sides of the blade portions of the pair of terminal plates.

4. In the method for manufacturing the attachment plug according to any one of claims 1 to 3, A method for manufacturing an attachment plug, further comprising a cable connecting step of connecting a cable to the cable connecting portion.

5. 5. The method of manufacturing an attachment plug according to claim 4, A method for manufacturing an attachment plug, characterized in that the separating step and the cable connecting step are carried out simultaneously.

6. In the method for manufacturing the attachment plug according to any one of claims 1 to 3, A method for manufacturing an attachment plug, wherein widths of the blade portions of the pair of terminal plates are set to be the same.

7. In the method for manufacturing the attachment plug according to any one of claims 1 to 3, A method for manufacturing an attachment plug, wherein widths of blade portions of said pair of terminal plates are set to be different.

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