Electrical connector and method of manufacturing the same

Abstract

To improve tensile strength of a coaxial cable and a plurality of cables, and to reduce the possibility that the coaxial cable and the plurality of cables fall off.SOLUTION: The electrical connector 1 includes the shell 7 having the connecting portions 81 for connecting the terminals 2 to the mating side connecting bodies 300, the insulating first housing 8 for integrally holding the terminals 2, the plurality of cable 101a, and the cable 101b, the fitting portions 72 for holding the coaxial cables 100 and fitting to the mating side connecting bodies 300 to connect the coaxial cables 100 to the mating side connecting bodies 300, and the front holding portions 73 and the rear holding portions 74 for holding the first housing 8; And an insulating second housing 9 that integrally holds the shell 7, the coaxial cable 100, and the first housing 8 in a state where the fitting portion 72 and the connection portion 81 are exposed to the outside.SELECTED DRAWING: Figure 4

Description

[Technical Field]

[0001] The present invention relates to an electrical connector for connecting a coaxial cable and a plurality of cables to a mating connector, and to a method for manufacturing the electrical connector. [Background technology]

[0002] 2. Description of the Related Art Conventionally, electrical connectors have been known that have a modular configuration in which a coaxial cable and a type of cable different from the coaxial cable, such as a signal cable, are accommodated in a single connector housing.

[0003] Patent Document 1 relates to a cable assembly that includes a coaxial connector provided at the end of a coaxial cable and a plurality of spring terminals that are connected to a signal cable, and discloses an electrical connector that is assembled by inserting the coaxial connector and the spring terminals into a hole in a housing. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Publication No. 2017-520132 Summary of the Invention [Problem to be solved by the invention]

[0005] However, in Patent Document 1, the coaxial connector and the spring terminal are individually inserted into and fixed in the housing, so the strength with which the coaxial connector and the spring terminal are fixed to the housing is weak, and there is a concern that the coaxial connector or the spring terminal may fall off when an operator pulls on the coaxial cable or the signal cable.

[0006] An object of the present invention is to provide an electrical connector and a method for manufacturing an electrical connector that can improve the tensile strength of coaxial cables and multiple cables and reduce the risk of the coaxial cables and multiple cables falling off. [Means for solving the problem]

[0007] The electrical connector according to the present invention is an electrical connector for connecting a coaxial cable and a plurality of cables to a mating connector, and comprises: an insulating first housing having conductive terminals connected to each of the plurality of cables and a connection portion for connecting the terminals to the mating connector, and for holding the terminals and the plurality of cables together; a shell having a fitting portion for holding the coaxial cable and fitting into the mating connector to connect the coaxial cable to the mating connector, and a holding portion for holding the first housing; and an insulating second housing for holding the shell, the coaxial cable, and the first housing together, with the fitting portion and the connection portion exposed to the outside. The first housing holds the multiple cables in an array along a first direction, the shell holds the coaxial cables and the first housing in an array along a second direction perpendicular to the first direction and the mating direction of the mating portion with the mating connector, the first housing has a hole that allows the terminal to be viewed from the second direction, and the second housing has a filling portion that fills the inside of the hole.

[0008] A manufacturing method of an electrical connector according to the present invention is a manufacturing method of an electrical connector for connecting a coaxial cable and a plurality of cables to a mating connector, and includes the following steps: a first step of integrally molding an insulating first housing that includes a connecting portion that connects conductive terminals connected to each of the plurality of cables to the mating connector and that integrally holds the terminals and the plurality of cables; a second step of holding the coaxial cable in a fitting portion of a shell so that the coaxial cable can be connected to the mating connector when the fitting portion is fitted to the mating connector, and having the holding portion of the shell hold the first housing formed in the first step; and a third step of integrally molding an insulating second housing that integrally holds the shell, the coaxial cable, and the first housing with the fitting portion and the connection portion exposed to the outside. The first step arranges the multiple cables along a first direction and holds them in the first housing, the second step arranges the coaxial cables and the first housing along a second direction perpendicular to the first direction and the mating direction of the mating portion with the mating connector, the first step forms the first housing by integral molding with each of the terminals clamped and fixed by a clamping member in the second direction, and after forming the first housing, releases the clamping of the terminals by the clamping member to form holes in the first housing that allow the terminals to be viewed from the second direction, and the third step forms a filling portion in the second housing that fills the inside of the hole formed in the first step. [Effects of the Invention]

[0009] According to the present invention, it is possible to improve the tensile strength of the coaxial cable and the plurality of cables, and also to reduce the risk of the coaxial cable and the plurality of cables falling off. [Brief explanation of the drawings]

[0010] [Figure 1] 1 is a perspective view of an electrical connector according to an embodiment of the present invention; [Figure 2] 1 is a side view of an electrical connector according to an embodiment of the present invention; [Figure 3] 1 is a front view of an electrical connector according to an embodiment of the present invention; [Figure 4] 4 is a cross-sectional view taken along the line AA in FIG. 3. [Figure 5] 1 is a perspective view of a shell of an electrical connector according to an embodiment of the present invention; [Figure 6] FIG. 2 is a rear view of the shell of the electrical connector according to the embodiment of the present invention. [Figure 7] 1 is a side view of a shell of an electrical connector according to an embodiment of the present invention. [Figure 8] FIG. 2 is a front view of a shell of the electrical connector according to the embodiment of the present invention. [Figure 9] 9 is a cross-sectional view of FIG. 8 taken along line B-B. [Figure 10] 1 is a perspective view of a first housing of an electrical connector according to an embodiment of the present invention. [Figure 11] 1 is a plan view of a first housing of an electrical connector according to an embodiment of the present invention. [Figure 12] 12 is a cross-sectional view taken along CC in FIG. 11. [Figure 13] 1 is a perspective view of an electrical connector according to an embodiment of the present invention, in which a coaxial cable and a first housing are held in a shell thereof. DETAILED DESCRIPTION OF THE INVENTION

[0011] An electrical connector and a manufacturing method for an electrical connector according to an embodiment of the present invention will be described in detail below with reference to the drawings. In the drawings, the x-axis, y-axis, and z-axis form a three-axis Cartesian coordinate system, with the positive y-axis direction representing the forward direction, the negative y-axis direction representing the backward direction, the positive x-axis direction representing the rightward direction, the negative x-axis direction representing the leftward direction, the positive z-axis direction representing the upward direction, and the negative z-axis direction representing the downward direction.

[0012] <Electrical connector configuration> The configuration of an electrical connector 1 according to an embodiment of the present invention will be described in detail below with reference to FIGS.

[0013] The electrical connector 1 connects a coaxial cable 100 and multiple cables 101a and 101b to a mating connector 300. The coaxial cable 100 includes an inner conductor 100a, an outer conductor 100c surrounding the inner conductor 100a, an inner insulator 100b interposed between the inner conductor 100a and the outer conductor 100c, and an outer insulator 100d covering the outer conductor 100c. Each of the cables 101a and 101b includes a center conductor 101c and an insulator 101d covering the center conductor 101c. The cables 101a and 101b are power cables. The cables 101a and 101b are not limited to power cables, and may be cables other than power cables, such as signal cables of a different type from the coaxial cable 100.

[0014] Specifically, the electrical connector 1 includes a terminal 2, a center terminal 3, an insulator 4, a ground terminal 5, a sleeve 6, a shell 7, a first housing 8, and a second housing 9.

[0015] The terminals 2 are formed by pressing a metal plate, and a pair of terminals 2 are provided corresponding to the pair of cables 101a and 101b. The pair of terminals 2 are insulated from each other by a first housing 8, and are connected to the central conductor 101c of cable 101a and the central conductor 101c of cable 101b, respectively. The terminals 2 include a contact portion 21, a crimping portion 22, and a tip portion 23.

[0016] The contact portion 21 is provided at the front end of the terminal 2 and is flat in the vertical and horizontal directions. The contact portion 21 contacts the front end of a forward protrusion 87 (described below) of the first housing 8. The contact portion 21 contacts and connects to the mating connector 300.

[0017] The crimping portion 22 is provided at the rear end of the terminal 2, and is crimped and connected to the central conductor 101c of the cable 101a and the central conductor 101c of the cable 101b.

[0018] The tip portion 23 is formed by bending the lower end of the abutting portion 21 rearward at approximately 90 degrees.

[0019] The center terminal 3 is made of a conductive material and is connected to the inner conductor 100a of the coaxial cable 100. The center terminal 3 is surrounded by a fitting portion 72 of the shell 7 (described later) and the ground terminal 5.

[0020] The insulator 4 is made of an insulating material. The central terminal 3 is inserted through the insulator 4. The insulator 4 is engaged with the ground terminal 5 inside the ground terminal 5, thereby restricting forward movement of the insulator 4 relative to the ground terminal 5, and is also engaged with an engaging portion (not shown) of the shell 7 via the ground terminal 5, thereby restricting forward and backward movement of the insulator 4 relative to the ground terminal 5 and the shell 7.

[0021] The ground terminal 5 is formed by pressing a metal plate, and has a hollow cylindrical shape.

[0022] The sleeve 6 is formed by pressing a metal plate and has a hollow cylindrical shape. The sleeve 6 covers a small diameter protrusion 77 (described later) of the shell 7, and is connected to the outer conductor 100c of the coaxial cable 100 with the outer conductor 100c sandwiched between the sleeve 6 and the small diameter protrusion 77.

[0023] The shell 7 is made of a conductive material and holds the coaxial cable 100 and the first housing 8. The shell 7 holds the coaxial cable 100 and the first housing 8 in an aligned manner along the up-down direction, which is a second direction perpendicular to the left-right direction and the forward direction, which is the mating direction with the mating connector 300. The shell 7 includes a flange portion 71, a mating portion 72, a front holding portion 73, a rear holding portion 74, a step portion 75, a large-diameter protrusion 76, and a small-diameter protrusion 77. The front holding portion 73 and the rear holding portion 74 form a holding portion that holds the first housing 8.

[0024] The flange portion 71 has a substantially rectangular shape when viewed from the front.

[0025] The fitting portion 72 has a cylindrical shape and protrudes forward from the flange portion 71 above the flange portion 71. Inside the fitting portion 72, the center terminal 3, the insulator 4, and the ground terminal 5 are arranged.

[0026] The front holding portion 73 is provided below the flange portion 71. The front holding portion 73 is a through hole that penetrates the flange portion 71 in the front-to-rear direction, which is the plate thickness direction of the flange portion 71. A connecting portion 81 (described later) of the first housing 8 is inserted into and held in the front holding portion 73.

[0027] The rear retaining portion 74 is provided below the flange portion 71. The rear retaining portion 74 is provided around the front retaining portion 73 at the rear end of the flange portion 71 and protrudes rearward beyond the rear end of the flange portion 71. The rear retaining portion 74 is U-shaped when viewed from the rear. The rear retaining portion 74 is connected to the large-diameter protruding portion 76. The upper inner wall portion 74a of the rear retaining portion 74 is flush with the upper inner wall portion 73a of the front retaining portion 73 and is at the same height in the up-down direction, and the lower inner wall portion 74b of the rear retaining portion 74 is provided below the lower inner wall portion 73b of the front retaining portion 73. The rear retaining portion 74 holds the main body portion 88 of the first housing 8.

[0028] The step portion 75 is provided between the front holding portion 73 and the rear holding portion 74, and is formed by the difference between the vertical position of the lower inner wall portion 73b of the front holding portion 73 and the vertical position of the lower inner wall portion 74b of the rear holding portion 74.

[0029] The large diameter protrusion 76 protrudes rearward from the rear end of the flange 71. The large diameter protrusion 76 has a cylindrical shape and includes a hollow portion 76a through which the coaxial cable 100 is inserted. The large diameter protrusion 76 has a front end portion that communicates with the outside through the hollow portion 76a.

[0030] The small diameter protrusion 77 protrudes rearward from the rear end of the large diameter protrusion 76. The small diameter protrusion 77 has a cylindrical shape and includes a hollow portion 77a through which the coaxial cable 100 is inserted. The hollow portion 77a of the small diameter protrusion 77 communicates with the hollow portion 76a of the large diameter protrusion 76. The small diameter protrusion 77 communicates with the outside at its rear end. The outer diameter of the small diameter protrusion 77 is smaller than the outer diameter of the large diameter protrusion 76. The inner diameter of the hollow portion 77a of the small diameter protrusion 77 is smaller than the inner diameter of the hollow portion 76a of the large diameter protrusion 76.

[0031] The first housing 8 is formed by integral molding using an insulating resin material and integrally holds the terminal 2, the cable 101a, and the cable 101b. The first housing 8 holds the cables 101a and 101b arranged along the left-right direction, which is the first direction. The first housing 8 includes a connection portion 81, a hole 82, a protruding portion 84, a downward protruding portion 86, a forward protruding portion 87, and a main body portion 88.

[0032] The connecting portion 81 protrudes forward from the main body portion 88. The connecting portion 81 is inserted through the front holding portion 73, protrudes forward from the shell 7 and the second housing 9, and is connected to the mating connector 300, thereby connecting the cables 101a and 101b to the mating connector 300 via the terminals 2.

[0033] The hole 82 is a through-hole that passes through the main body 88 in the vertical direction. The hole 82 makes a part of the terminal 2 visible from above and below as a second direction, and also makes the pair of terminals 2 visible from above and below (see FIGS. 10 and 11).

[0034] The extensions 84 are provided at the front end of the main body 88 and protrude outward from the connecting portion 81 to the left and right.

[0035] The downward protrusion 86 protrudes downward from the front end of the main body 88 .

[0036] The forward protrusions 87 protrude forward from the front end of the connection portion 81, and a pair of the forward protrusions 87 is provided according to the number of terminals 2. The forward protrusions 87 abut against the abutment portions 21 of the terminals 2.

[0037] The main body 88 is provided behind the connection part 81 and integrally holds the cables 101a and 101b.

[0038] The second housing 9 is formed by integral molding using an insulating resin material, and holds the shell 7, which holds the first housing 8 and the coaxial cable 100, together with the first housing 8 and the coaxial cable 100. The second housing 9 includes a flange portion 91, an accommodating portion 92, a fixing portion 93, and a filling portion 94.

[0039] The flange portion 91 is provided at the front end portion of the second housing 9.

[0040] The accommodation portion 92 is recessed around the shell 7 at the front end of the flange portion 91. A sealing member (not shown) is engaged with the accommodation portion 92 to seal the space between it and the mating connector 300.

[0041] The fixing portions 93 are through holes that penetrate the flange portion 91 in the front-rear direction, and are provided in pair on the left and right. A fastening member (not shown) is inserted into the fixing portions 93 to fasten the mating connector 300 to the electrical connector 1.

[0042] The filling portion 94 fills the inside of the hole 82. The filling portion 94 fills the region R (see FIG. 11 ) between the pair of terminals 2 visible through the hole 82 when viewed from above, across the vertical direction, thereby insulating the pair of terminals 2 from each other in the hole 82.

[0043] In the electrical connector 1 having the above configuration, the mating portion 72 of the shell 7 fits into the mating connector 300 to connect the coaxial cable 100 to the mating connector 300, and the abutting portion 21 of the terminal 2 exposed at the front end of the connecting portion 81 of the first housing 8 abuts against the mating connector 300 to connect the cable 101a and the cable 101b to the mating connector 300.

[0044] <Manufacturing method for electrical connectors> A method for manufacturing an electrical connector 1 according to an embodiment of the present invention will be described in detail below with reference to FIGS.

[0045] First, the crimping portion 22 of the terminal 2 is crimped to the central conductor 101c of each of the plurality of cables 101a and 101b, thereby connecting the central conductor 101c of each of the plurality of cables 101a and 101b to the terminal 2, respectively.

[0046] Next, each of the terminals 2 connected to the multiple cables 101a and the cable 101b is set in a mold not shown, and the clamping member 200 is moved downward and the clamping member 201 is moved upward to clamp the terminal 2 from above and below by the clamping members 200 and 201 (see Figure 12).

[0047] Next, with the terminal 2 clamped from above and below by the clamping members 200 and 201, molten insulating resin material is injected into a mold and hardened, thereby forming the first housing 8, which holds the cable 101a, the cable 101b and the terminal 2 together, by integral molding.

[0048] Next, after the first housing 8 is formed, the clamping member 200 is moved upward and the clamping member 201 is moved downward to release the clamping of the terminal 2 by the clamping members 200 and 201. As a result, the hole 82, which is a hole for the clamping members 200 and 201, is formed in the first housing 8.

[0049] Next, the tip of the outer insulator 100d of the coaxial cable 100 is removed to expose the outer conductor 100c to the outside, and the coaxial cable 100 is then inserted into the sleeve 6, and then the coaxial cable 100 is inserted into the fitting portion 72, hollow portion 76a, and hollow portion 77a of the shell 7.

[0050] Next, the central terminal 3 inserted through the insulator 4 is connected to the inner conductor 100a of the coaxial cable 100 by crimping.

[0051] Next, the ground terminal 5 is placed over the insulator 4 from the front, and the insulator 4 is inserted into the ground terminal 5, and the insulator 4 and the ground terminal 5 are engaged with each other. As a result, the coaxial cable 100, the center terminal 3, the insulator 4, and the ground terminal 5 are integrated together.

[0052] Next, the shell 7 through which the coaxial cable 100 has been inserted is moved, and the ground terminal 5 is inserted from the front into the fitting portion 72 of the shell 7, and an engaging portion (not shown) of the ground terminal 5 engages with an engaging portion (not shown) of the shell 7, thereby holding the ground terminal 5 in the shell 7. Furthermore, the small diameter protrusion 77 of the shell 7 is inserted between the inner insulator 100b and the outer conductor 100c of the coaxial cable 100, and the small diameter protrusion 77 and the outer conductor 100c are connected to each other.

[0053] Next, the sleeve 6 is moved to cover the small diameter protrusion 77 and the outer conductor 100c, thereby connecting the sleeve 6, the shell 7, and the outer conductor 100c.

[0054] Next, the first housing 8 is inserted from the rear into the rear holding portion 74 and the front holding portion 73 of the shell 7 until the protruding portion 84 abuts against the stepped portion 75, thereby holding the first housing 8 on the shell 7. As a result, the connecting portion 81 of the first housing 8 protrudes forward from the front holding portion 73.

[0055] This allows the coaxial cable 100 and the first housing 8 to be held by the shell 7.

[0056] Next, the shell 7 holding the coaxial cable 100 and the first housing 8 is set in a mold (not shown), and then molten insulating resin material is poured into the mold in which the shell 7 is set and cured, thereby forming an insulating second housing 9 by integral molding that integrally holds the shell 7, the coaxial cable 100, and the first housing 8 with the fitting portion 72 and the connection portion 81 exposed to the outside. This completes the electrical connector 1.

[0057] At this time, the molten resin material enters the interior of the hole 82 and hardens, forming a filling portion 94 that fills the interior of the hole 82 in the second housing 9. As a result, the filling portion 94 and the hole 82 fit together, allowing the second housing 9 to firmly hold the first housing 8.

[0058] Furthermore, the molten resin material enters between the pair of terminals 2 visible through the hole 82 and hardens, thereby reliably insulating the pair of terminals 2 from each other at the hole 82 .

[0059] The electrical connector 1 manufactured by the above manufacturing method can seal between the first housing 8 and the front holding portion 73 and the rear holding portion 74, between the second housing 9 and the first housing 8, and between the second housing 9 and the shell 7 using the resin that forms the second housing 9 without using a sealing member or adhesive, thereby ensuring waterproofness without increasing costs.

[0060] As described above, according to this embodiment, the electrical connector 1 that connects the coaxial cable 100 and the plurality of cables 101a and 101b to the mating connection member 300 includes the conductive terminals 2 that are connected to each of the plurality of cables 101a and 101b, the connecting portion 81 that connects the terminals 2 to the mating connection member 300, the insulating first housing 8 that integrally holds the terminals 2 and the plurality of cables 101a and 101b, and the insulating first housing 8 that holds the coaxial cable 100 and is fitted into the mating connection member 300 to connect the coaxial cable 100 to the mating connection member 300. By having a shell 7 having an engaging portion 72 to be connected to the body 300, and a front holding portion 73 and a rear holding portion 74 that hold the first housing 8, and an insulating second housing 9 that holds the shell 7, the coaxial cable 100, and the first housing 8 together with the engaging portion 72 and the connection portion 81 exposed to the outside, the tensile strength of the coaxial cable 100 and the multiple cables 101a and 101b can be improved and the risk of the coaxial cable 100 and the multiple cables 101a and 101b falling off can be reduced.

[0061] The present invention is not limited to the above-described embodiments in terms of the types, arrangements, numbers, etc. of components, and can of course be modified as appropriate within the scope of the gist of the invention, such as by appropriately replacing the components with components that have equivalent effects.

[0062] Specifically, in the above embodiment, the first housing 8 is configured to integrally hold two cables 101a and 101b, but this is not limiting, and the first housing 8 may hold three or more cables. In this case, the first housing 8 can arrange three or more cables along the left-right direction. [Industrial Applicability]

[0063] The electrical connector and the method of manufacturing the electrical connector according to the present invention are suitable for connecting a coaxial cable and a plurality of cables to a mating connector. [Explanation of symbols]

[0064] 1 Electrical Connector Terminal 2 3 Center terminal 4 insulators 5 Ground terminal 6 sleeves 7. Shell 8 First Housing 9 Second Housing 21 Contact part 22 Crimping part 23 Tip 71 Flange 72 Fitting part 73 Front holding part 73a Upper inner wall 73b Lower inner wall 74 Rear holding part 74a Upper inner wall 74b Lower inner wall 75 Step 76 Large diameter protrusion 76a Hollow part 77 Small diameter protrusion 77a Hollow part 81 Connection 82 Hole 84 Overhang 86 Downward protrusion 87 Forward protrusion 88 Main body 91 Flange 92 Storage unit 93 Fixed part 94 Filling section 100 coaxial cable 100a inner conductor 100b Inner insulator 100c outer conductor 100d outer insulation 101a cable 101b cable 101c center conductor 101d Insulator 200 Clamping member 201 Clamping member 300 Counterpart connection body

Claims

1. An electrical connector for connecting a coaxial cable and a plurality of cables to a mating connector, the electrical connector comprising: a conductive terminal connected to each of the plurality of cables; an insulating first housing having a connection portion for connecting the terminal to the mating connector and holding the terminal and the plurality of cables together; a shell including a fitting portion that holds the coaxial cable and is fitted into the mating connector to connect the coaxial cable to the mating connector, and a holding portion that holds the first housing; an insulating second housing that holds the shell, the coaxial cable, and the first housing together in a state where the fitting portion and the connection portion are exposed to the outside; and The first housing includes: The plurality of cables are arranged and held along a first direction; The shell is The coaxial cable and the first housing are aligned and held along a second direction perpendicular to the first direction and a direction in which the fitting portion is fitted to the mating connector, The first housing includes: a hole through which the terminal can be seen from the second direction; The second housing includes: A filling portion is provided to fill the inside of the hole portion.

1. An electrical connector comprising:

2. The first housing includes: a hole through which the plurality of terminals can be seen from the second direction; The second housing includes: a filling section that fills spaces between the plurality of terminals visible through the hole section; 2. The electrical connector according to claim 1.

3. A method for manufacturing an electrical connector for connecting a coaxial cable to a plurality of cables with a mating connector, comprising: a first step of integrally molding an insulating first housing that includes a connecting portion for connecting conductive terminals connected to each of the plurality of cables to the mating connector and that integrally holds the terminals and the plurality of cables; a second step of holding the coaxial cable in a fitting portion of the shell so that the coaxial cable can be connected to the mating connector when the fitting portion is fitted into the mating connector, and holding the first housing formed in the first step in a holding portion of the shell; a third step of integrally molding an insulating second housing that holds the shell, the coaxial cable, and the first housing together while leaving the fitting portion and the connection portion exposed to the outside; and The first step comprises: The plurality of cables are arranged along a first direction and held in the first housing; The second step includes: The coaxial cable and the first housing are arranged along a second direction perpendicular to the first direction and a direction in which the mating portion is mated with the mating connector, The first step comprises: the first housing is integrally formed in a state in which each of the terminals is clamped and fixed by a clamping member in the second direction, and after the first housing is formed, the clamping of the terminals by the clamping member is released, thereby forming a hole in the first housing through which the terminals can be seen from the second direction; The third step includes: forming a filling portion in the second housing to fill the inside of the hole formed in the first step; 10. A method for manufacturing an electrical connector comprising the steps of:

4. The first step comprises: the first housing is integrally formed in a state in which each of the terminals is clamped and fixed by a clamping member in the second direction, and after the first housing is formed, the clamping of the terminals by the clamping member is released, thereby forming a hole in the first housing through which the plurality of terminals can be seen from the second direction; The third step includes: forming a filling portion in the second housing to fill spaces between the plurality of terminals visible through the hole formed in the first step; 4. The method for manufacturing an electrical connector according to claim 3.

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