JPH1022033A - Manufacture of pressure type connector - Google Patents

Abstract

PROBLEM TO BE SOLVED: To manufacture a pressure type connector with small contact resistance in connection efficiently by winding an insulated wire body on a drum type nonexpansion base helically, by laying several sheets of obtained sheet obliquely and by cutting them into a fixed width. SOLUTION: Adhesive or an adhesive layer 5 is coated and formed on a nonexpansion base 4 which is consisted of polyethylene terephthalate wound on a drum 6. Then, an insulated wire body 3 which is consisted of an insulated coating conductive wire is moved relatively to an axial direction to wind helically, while this drum 6 is being rotated. An obtained wound body 7 is separated from the drum 6 for expansion. Several sheets of one-layer sheet 8 which is obtained in this process are layered so that the wire body 3 can be parallel each other to make a small block. Then, several small blocks are layered in an oblique direction to a layered surface. This layered block is cut in parallel and in a fixed width across the wire body to obtain a pressure type connector.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for manufacturing a press-connecting connector used for connecting electric and electronic components.

[0002]

2. Description of the Related Art A conventional method of manufacturing a press-connecting connector includes 1) a conductive linear body, for example, a plurality of rectangular sheets in which metal wires are arranged in parallel, and a rectangular parallelepiped such that the metal wires are parallel to each other. And slicing the laminate parallel to the lamination direction to obtain a connector in which metal wires are arranged perpendicular to the press-contact surface; 2) mixing the metal fiber with resin or rubber and extruding 3) A method of aligning and arranging metal fibers in a certain direction to form a connector by extruding them from the same; 3) A method of arranging the metal fibers in a magnetic field and pouring a resin into the connector to form a connector; 4) Bending in advance A method of arranging metal wires to reduce the compressive load of the connector has been studied.

[0003]

However, in the case where the metal wires of 1) are arranged perpendicularly to the press-contact surface, the compression load increases due to the repulsion of the metal wires at the time of mounting the connector, which causes distortion of the substrate. In addition, when a connector is obtained by slicing, the dimensional accuracy of the thickness of the connector cannot be obtained unless the slice blade is moved in parallel with the mounting surface of the laminated block body. Moreover, in order to obtain a connector with a reduced compressive load from a laminated block in which metal wires are arranged perpendicular to the press-contact surface, it is only necessary to slice the metal wire in an inclined state. Can be sliced by attaching it at an angle to the slice blade, but in this method, until the connector of the maximum effective size can be sliced from the laminated block, loss of the laminated block will occur,
The number of connectors of the required size is reduced, resulting in lower slicing efficiency and higher cost. Also, in the case of using metal fibers in 2), there is a restriction on the length to orient and arrange the metal fibers in a certain direction, and not all metal fibers come out on both press-contact surfaces of the connector. It is difficult to obtain a high connector height, coarse and fine pitch,
It was not possible to arrange at a constant pitch and to arrange metal fibers at an angle.

In the method 3), it is difficult to control the magnetic field to freely select the arrangement pitch and density in terms of equipment and equipment, and it is difficult to tilt the metal fiber in the magnetic field. It was impossible to arrange them. The method of 4) arranging the bent metal wire in advance is effective for reducing the compressive load, but the arrangement pitch and height are limited because the bent portion must be used, and the bent wire is also required. It was technically very difficult to manufacture a metal wire and to arrange it regularly.
An object of the present invention is to provide an arrangement of a conductive linear body having an arbitrary pitch, which can be coarse or fine, to reduce a compressive load without lowering a slice efficiency of a laminated block body, and to reduce contact resistance during connection. It is intended to provide a method of manufacturing a press-connecting connector, which can reduce the pressure.

[0005]

According to the present invention, there is provided a method of manufacturing a press-connecting connector, comprising the steps of: providing a non-stretchable base material wound on a drum; After rotating the drum and moving it relatively in the axial direction and winding it, the wound body is peeled off from the drum and deployed, and the plurality of sheets are wound so that the conductive linear bodies are parallel to each other. Laminated into a small block, and a plurality of the small blocks are laminated in a direction inclined with respect to the laminating surface to form a laminated block body. The width is to be cut. The manufacturing method, the conductive linear body coated with insulation, the conductive linear body,
An unvulcanized, unsolidified or uncured (hereinafter referred to as uncured) elastomer that is insulated and coated, and then heated and pressed to form a laminated block, and then vulcanized, solidified or cured (hereinafter, referred to as uncured). It is a preferred embodiment to carry out the process as represented by curing. According to the method of the present invention, at any height, the pitch of the arrangement of the conductive linear bodies can be made coarse or fine depending on the thickness of the insulating coating, and the compressive load can be reduced without lowering the slice efficiency of the laminated block body. Thus, a press-connecting connector can be obtained which can lower the contact resistance at the time of connection.

[0006]

BEST MODE FOR CARRYING OUT THE INVENTION In the method of manufacturing a press-connecting connector according to the present invention, first, steps until a laminated block body is obtained are described with reference to FIGS. 1 (a) to 1 (d): perspective explanatory views, (e) to
(I): vertical sectional view]. First, when the conductive linear body 1 is insulated and coated with the insulator 2 by extrusion molding, the insulating linear body 3 is obtained [FIG. 1 (a)]. Examples of the conductive linear body 1 include metal wires such as copper, tungsten, nickel, and gold, and alloy wires such as brass and phosphor bronze. Usually, wire diameter 40 ~ 500μ
m is used. If it is less than 40 μm, it will be easy to cut due to the resin pressure during extrusion molding, and if it exceeds 500 μm, it will be difficult to cut in the slicing step described later, which is not preferable. When using a thin wire diameter, it is preferable to bundle several wires and make the diameter 40 μm or more. As the insulator 2,
Thermoplastic resins such as polyvinyl chloride, polyethylene, polypropylene, polyvinyl acetate and polyethylene terephthalate; elastomers or synthetic rubbers such as butylene-styrene rubber, neoprene rubber, acrylonitrile-butadiene rubber, styrene-butadiene-styrene rubber, and silicone rubber; Can be The thickness of the insulating coating of the insulator 2 is 10 μm in consideration of the insulating property and the strength of the coating.
m or more, and the pitch of the connector is changed by changing the thickness of this coating.

On the other hand, after a layer 5 of an adhesive or an adhesive, preferably an adhesive layer, is formed on the surface of the non-stretchable substrate 4 [FIG. After winding and fixing, or after winding the non-stretchable base material 4 around the peripheral side surface of the drum 6, a pressure-sensitive adhesive or an adhesive layer (hereinafter referred to as a pressure-sensitive adhesive layer) 5, preferably a pressure-sensitive adhesive layer Is formed [FIG. 1 (c)]. The above-mentioned insulated wire 3 is supplied from the tangential direction of the drum 6 (in the axial direction of the drum 6) at a constant pitch without any gap, and wound and wired to obtain a wound body 7 [FIG. )]. For this wiring, the position of the insulated linear body 3 on the side of the extrusion forming is fixed, and the drum 6 is moved at a constant speed in the axial direction while rotating, or the position of the drum is fixed. While rotating the drum 6, the supply position of the insulated wire 3 is moved at a constant speed in the axial direction of the drum 6, so that either the supply position of the insulated wire 3 or the rotating drum 6 is It is performed by relatively moving in the axial direction. After wiring the insulated linear body 3 over the entire surface of the non-stretchable base material 4, the extrusion is temporarily stopped, and the wound body 7 is wound at the end when the non-stretchable base material 4 is wound around the drum 6. When the sheet is cut open in the longitudinal direction, peeled off from the drum 6 and deployed, the insulating linear body 3 is arranged in parallel with the non-stretchable base material 4 at a constant pitch through the adhesive layer 5 without any gap [FIG. 1 (e)] is obtained. This sheet is defined as single layer product 8.

The non-stretchable base material 4 used here has an elongation of 1% or less when pulled with a force of 0.1 kg / cm, such as polyethylene terephthalate (PET), polybutylene terephthalate (PBT), Examples thereof include films made of polyethylene nitrile, polyimide, polycarbonate, and the like, and metal foils of aluminum or the like coated with insulation. Further, the thickness is preferably 20 μm or more in order to provide strength in handling. But 200
If it is more than μm, the flexibility is impaired, and it becomes difficult to remove the resin. Accordingly, PET having a thickness of about 50 μm is most preferable in consideration of cost, heat resistance, and the like. The drum 6 may have any cross-section such as a regular polygon, an ellipse, and a circle, as long as the wiring pitch is not easily disturbed at the time of winding, but a circle is preferably used.

The one-layer product 8 is cured or not cured, and an adhesive (including a pressure-sensitive adhesive) layer 9 covering the insulating linear body 3 on the surface is applied and formed [FIG. 1 (f)]. ]
Thereafter, the same single-layered product 8 is turned upside down and adhered to the coated surface [FIG. 1 (g)]. The two-layer product 10 [FIG. 1 (h)] is obtained by removing the non-stretchable base material 4 from one surface. When removing the non-stretchable base material 4, the adhesive layer 5 and the adhesive layer 9 are not peeled off by the adhesive layer 9, but are removed from the adhesive layer 5.
It is necessary to select the kind of each adhesive and the adhesive so that is taken on the non-stretchable base material 4 side and peeled off.
Next, the two-layer product 10 is similarly coated and formed with an adhesive (including an adhesive) layer 11 for covering the insulated linear body 3, and then the same two-layer product 10 is applied to the application surface by turning over. [Figure 1
(I)], the non-stretchable base material 4 is removed from one surface to obtain a four-layer product 12. Thereafter, lamination is performed to a size required for a connector, and then air is released by a cold press and then a hot press is performed, whereby a small block A is obtained. In addition, it is necessary that the arrangement direction of the insulated linear members 3 is always constant in stacking these.

A plurality of the obtained small blocks A are laminated in a direction inclined at a predetermined angle with respect to the lamination surface to produce a laminated block body B. In the laminated block body B, the conductive linear bodies of the small blocks A are connected in a state where they face in a certain direction. For manufacturing the laminated block body B, for example, FIG.
Each of the small blocks A is arranged and laminated at a predetermined inclination angle via an insulating adhesive in various kinds of laminating jigs as shown in the vertical sectional views in FIGS. The method is adopted. FIG. 2A shows the inclination angle of θ ₁ with respect to the fixed (or relatively movable) two parallel side plates 21 and the stacking surface (horizontal plane in the figure) of the small block A. A container-like laminating jig 23 having a bottom plate 22 having a fixed (or variable) bottom surface is used, in which a plurality of small blocks A are sequentially inclined at an angle parallel to the bottom surface, respectively. After insertion, a predetermined load 24 is applied to cure. FIG. 2B shows a stacking jig 27 having a shape in which a side plate 26 inclined at an inclination angle θ ₂ with respect to the stacking surface (vertical surface in the figure) of the small block A is implanted at one end of the bottom plate 25. In this method, a plurality of small blocks A are stacked on the bottom plate 25 with their respective ends pressed against the inclined surface of the side plate 26 to be cured.

FIG. 2C shows a stack having a shape in which an upright side plate 29 is provided at one end of a bottom plate 28 having a bottom surface inclined at an inclination angle θ ₃ with respect to the stacking surface (horizontal plane in the figure) of the small block A. In this method, a plurality of small blocks A are pressed against the side plate 29 by using the tool jig 30 and sequentially arranged on the inclined bottom surface of the bottom plate 28 to be cured. These laminating jigs have an inclination angle of 0 to 90 °
It is preferable to use a material that can be adjusted to the range described above. The obtained laminate has an inclination angle θ _{1 to} θ set by each lamination jig.
_When air is removed by a cold press using a metal frame having ₃ and then a hot press is performed, a laminated block B is obtained. Although the laminated block body B varies depending on the height of the connector to be manufactured, the inclination angle is desirably 85 to 40 °, particularly preferably 80 to 45 ° in order to reduce the compressive load. Lastly, the laminated block body B is cut into a predetermined width parallel to the direction inclined at a certain angle with respect to the laminating surface of the small block A and across the conductive linear body. The desired press-fit type connector is obtained by cutting to the size shown in FIG.

FIG. 2D shows a constant angle θ with respect to the lamination surface.
_The process of fixing the laminated block body B laminated in the direction inclined at ₄ on the cutting substrate 31 in the same manner via the adhesive layer 32 and cutting in the direction of the arrow parallel to the inclination direction of the small block A is conceptually shown. FIG. 3 is a schematic diagram showing a state in which the conductive linear body 3 is obtained by cutting (the conductive linear body 3 has an inclination angle θ _{4 with} respect to the lamination surface of the small block A).
FIG. 4 is a partial perspective explanatory view showing a press-contact type connector C which is inclined at (). In each of the above-described steps, the cross-section of the conductive linear body that has been cut and exposed can be subjected to gold plating or solder plating to reduce the contact resistance. The adhesive (including an adhesive) used in each step includes an uncured silicone-based adhesive resin or a known adhesive such as a vinyl chloride-vinyl acetate copolymer-based adhesive, a cyanoacrylate-based adhesive, Melt adhesives and the like can be mentioned.

[0013]

EXAMPLES Hereinafter, specific embodiments of the present invention will be described with reference to examples. 100 parts by weight of silicone rubber compound KE-151ku (trade name, manufactured by Shin-Etsu Chemical Co., Ltd.) 0.5 parts by weight of vulcanizing agent C-19A (same as above), 2.5 parts by weight of vulcanizing agent C-19B (same as before) and silicone primer KBM-403 (same as above) Using a silicone rubber to which 1.0 part by weight was added and blended, an insulation coating of a 73 μm brass wire having a wire diameter of 40 μm was performed by extrusion molding so as to have a thickness of 60 μm. On the other hand, silicone adhesive KR101-10
(Same as above) 1.2 parts by weight of benzoyl peroxide as a curing catalyst was added to 100 parts by weight, and the mixture was applied to a 300 mm square PET as a non-stretchable base material by screen printing at a thickness of 40 μm, and heated at 100 ° C. Baking was performed by heating for 1 hour [see FIG. 1 (b)]. This sheet around
It is fixed on the peripheral side of a 300mm drum [see Fig. 1 (c)]
The above-mentioned insulated sheathed brass wire was wired thereto.
The wiring method was performed by fixing the feeding position of the extrusion molding and moving the drum in the axial direction by a length of 160 μm per rotation while rotating the drum [see FIG. 1 (d)].

When the wiring is completed on the entire surface of the sheet, the extrusion molding is temporarily stopped, the wound body is cut open in the longitudinal direction at the end when the sheet is wound on the drum, and the sheet is removed from the drum and deployed. There was obtained a sheet in which a 73-Brass wire coated with insulation on PET was arranged in parallel. 10kg
By heating at 180 ° C. for 4 hours under a pressure of / cm ² , a layer was obtained (see FIG. 1 (e)). This one-layer product has a silicone adhesive KE-
A mixture of 50 parts by weight of 1800TA (before), 50 parts by weight of KE-1800TB (before), and 0.2 part by weight of control agent X-93-500 (before) was applied by screen printing to a film thickness of 40 μm. [Fig. 1
(F)], the same layer as shown above in FIG. 1 (e) was bonded together with the application side facing in [see FIG. 1 (g)], and then the non-stretchable base material on one side was removed. A two-layer product was obtained [see FIG. 1 (h)]. After two two-layer products were bonded together using the above-mentioned adhesive mixture [see FIG. 1 (i)], the non-stretchable base material on one side was removed to obtain a four-layer product. An adhesive was applied to one side of the obtained four-layer product by screen printing, and bonded to another four-layer product. Repeat the operation of removing the non-stretchable base material on one side, applying the adhesive, and bonding another four-layer product, making a product with ten four-layer products bonded together, cold for 12 hours, performs air bleeding by pressing (12kg / cm ^2), then pressurized and heated (180 ° C., 2 hours, 10 kg / cm ²⁾ and then integrated to produce a size 300 mm × 300 mm, small blocks of height 8 mm.

An adhesive is applied to one side of the small block,
It was inserted into the laminating jig shown in FIG. The stack was taken out, bleeding air with a cold press, and pressurized and heated (18 ° C., 4 hours, 10 kg / cm ² ) for integration to obtain a laminated block body. FIG. 2D shows this laminated block body.
Fix it to the slicing jig shown in the figure below, slice it to a thickness of 3 mm, and apply gold to the end of the exposed 73/3 brass wire of the obtained sheet.
It was plated to a thickness of 0.2 μm. In this manner, a crimp-type connector similar to that shown in FIG. 3 having a pitch of 0.2 mm × 0.16 mm and a height of 3 mm, in which the brass wire is inclined at an angle of 45 ° with respect to the press-contact surface, is provided. Obtained.

[0016]

According to the method of the present invention, the type and diameter of the conductive linear body, the arrangement pitch and the inclination angle, the height of the connector, and the like in the press-connecting connector can be changed or changed according to the setting conditions at the time of manufacture. It can be done easily by adjusting the tool.

[Brief description of the drawings]

FIGS. 1A to 1D are perspective views and FIGS. 1E to 1I are longitudinal cross-sectional views illustrating a process of obtaining a block body in the method of the present invention.

FIGS. 2A to 2C show steps of obtaining a press-connecting connector from a block body in the method of the present invention.
(C) is a longitudinal cross-sectional explanatory view showing a different mode when obtaining a laminated block from a block body, and (d) is a longitudinal cross-sectional explanatory view conceptually showing a step of slicing the laminated block to obtain a press-fit connector. is there.

FIG. 3 is a partial perspective explanatory view showing one example of a press-contact type connector obtained by the method of the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Conductive linear body, 2 ... Insulator, 3 ... Insulated linear body, 4 ...
Non-stretchable base material, 5: adhesive layer, 6: drum, 7: wound body, 8: sheet (one-layer product), 9, 11, 32 ... adhesive layer, 10
… Two-layer product, 12… four-layer product, 21, 26, 29… side plate, 22, 25, 28
... bottom plate, 23,27,30 ... laminating jig, 24 ... load 31 ... cutting board, theta ₁ through? ₄ ... inclination angle, A ... small block, B ... laminated block body, C ... insulation displacement connector.

Claims (2)

[Claims] 1. A conductive linear body, which is insulated and coated with an adhesive or a pressure-sensitive adhesive on a non-stretchable base material wound around a drum, is relatively moved in the axial direction while rotating the drum. After winding, the roll is separated from the drum and deployed,
The plurality of sheets are stacked so that the conductive linear bodies are parallel to each other to form a small block, and the plurality of sheets of the small blocks are stacked in a direction inclined with respect to the stacking surface to form a stacked block body. A method of manufacturing a press-connecting connector, characterized in that cutting is performed at a predetermined width parallel to the laminating direction and across the conductive linear body. 2. The method according to claim 1, wherein the conductive linear body coated with insulation is formed by coating the conductive linear body with unvulcanized, unsolidified or uncured elastomer. The method according to claim 1, wherein the connector is cured by applying pressure.