JP3437345B2 - Connector manufacturing method - Google Patents

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 an interface connector used in a computer or the like.

[0002]

2. Description of the Related Art In recent years, the demand for personal computers (particularly portable personal computers) is remarkable. External devices (printer, external monitor screen, memory card, etc.) can be connected to the personal computer. The connection between the personal computer and the external device is made via the connector. In the connector, terminals are formed at predetermined intervals in a connector made of insulating synthetic resin.
Insulation parts are formed between the terminals in order to ensure the insulation between the adjacent terminals.

Conventionally, an insulating groove has been considered as one for forming the insulating portion. Therefore, the insulating groove is formed by the following method. (1) Forming method by resin molding. That is, a method of integrally forming an insulating groove when resin molding a connector.

(2) Forming method by punching. That is, a method of forming an insulating groove by punching the end portion of the connector with a press die having the shape of an insulating groove. (3) Forming method by chemical treatment. That is, with the mask applied to the end of the connector, the end is treated with chemicals,
A method of forming insulating grooves by dissolving parts other than masked parts with a chemical.

[0005]

In recent years, the number of signal lines of a connector has been increasing in order to increase the packaging density. As the number of signal lines increases, it is necessary to narrow the terminal spacing. That is, it is necessary to narrow the pitch of the insulating groove.

However, the method of forming the insulating groove has the following problems. In the method of forming by resin molding, there is a problem that it takes time to manufacture the mold and the cost increases. Further, it has been difficult to form a narrow pitch or a narrow insulating groove by injection molding.

Further, in the forming method by punching, similarly to the problem of the forming method by resin molding, there is a problem that it is difficult to manufacture a press die and the cost is increased. Further, there is a problem that the terminal portion may be chipped when punching.

Further, in the forming method by the chemical treatment, there is a problem that the cost is increased because the mask treatment for forming the non-dissolved portion has high accuracy. In addition, this forming method has a problem that the cost is further increased due to the large number of manufacturing steps. Furthermore, in the method of forming each insulating groove, it is not possible to process a large amount at one time.

The present invention has been made to solve the above problems, and an object of the present invention is to provide a method of manufacturing a connector which is inexpensive, highly accurate, and capable of manufacturing a connector having a narrow conductor interval. is there.

[0010]

In order to achieve the above object, in the method of manufacturing a connector according to the first aspect of the present invention, a spirally wound wire is run between a plurality of groove rollers, and the wire is spirally wound on the wire. The gist is to cut the insulating groove between the plurality of terminals of the connector by supplying a slurry containing abrasive grains.

Therefore, in the method of manufacturing the connector according to the first aspect, the slurry is supplied to the wire while the wire is running. Then, by contacting the connector with the wire, an insulating groove is formed in the connector.
At this time, an insulating groove having a width obtained by adding the grain diameter of the abrasive grains in the slurry to the diameter of the wire is formed in the connector.

Furthermore, the connector and the housing to hold the case in multiple stacked state, and its gist to cut the insulation groove.

[0013] Therefore, the according to the connector slurry directly is prevented by hold case.

Further, the gist of the present invention is to house the connector in a state where both ends of the connector are sandwiched by dummy materials.

[0015] Therefore, by sandwiching the connector by dummy material, occurrence of sagging is prevented at the cut portion of the connector.

[0016] In the manufacturing method of the connector according to claim 2, Oite to claim 1, wherein the insulating trench is formed by forming a contact plated on the end of the connector, to be cut formed by a wire saw that Use as a summary.

Therefore, in the method of manufacturing the connector according to the second aspect , in addition to the function of the method of manufacturing the connector according to the first aspect , the insulating groove is formed in the state where the contact plating is formed at the end of the connector. Since it is formed, it is not necessary to newly provide a contact with the terminal in a later step.

According to a third aspect of the present invention, there is provided a method of manufacturing a connector according to the first or second aspect , wherein a plurality of connectors are superposed in the extending direction of the wire, and an insulating groove is formed in each connector at the same time. The summary will be given.

Therefore, in the connector manufacturing method according to the third aspect , in addition to the function of the connector manufacturing method according to the first or second aspect , the insulating groove is formed in a plurality of connectors at one time.

[0020]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment in which the present invention is embodied in a card edge connector will be described below with reference to the drawings.

FIG. 1 shows a card-type external memory M and a card edge connector 31 which is provided in a device such as a computer and into which the external memory M is inserted. As shown in FIG. 6, the card edge connector 31 is provided with a plurality of terminals 34. Between each terminal 34, each terminal 34
An insulating groove 35 for insulating the spaces is formed.

Next, the wire saw will be described. As shown in FIG. 2, a large number of grooves 14 are formed on the outer peripheral surface of the three main rollers 11 to 13, which are the first main roller 11, the second main roller 12, and the third main roller 13 as processing rollers. Are formed at a predetermined pitch. A cutting wire made of steel wire (in the present embodiment, a wire having a diameter of 0.18 mm is used) 15 is continuously spirally wound around the groove 14 of each of the main rollers 11 to 13, The rotation of the rollers 11 to 13 causes the main rollers 11 to 11 to rotate.
It is run between 13. The main rollers 11 to 11
13 is rotated by a motor (not shown).

The pair of reels 16 and 17 are arranged beside the main rollers 11 to 13. Then, the wire 15 is supplied from one reel 16 onto the main rollers 11 to 13 via the plurality of guide rollers 18, and also from the main roller 11 to 13 onto the other reel 17 via the plurality of guide rollers 19. The wire 15 is wound up. When all the wires 15 are wound from one reel 16 to the other reel 17, the supply and winding directions of the wire 15 are reversed. In the meantime, the wire 15 travels forward and backward such that when the wire 15 advances a certain amount, the wire 15 is slightly retracted.

The pair of dancer levers 20 and 21 are rotatably disposed in the traveling path of the wire 15 between the main rollers 11 to 13 and the reels 16 and 17, and the dancer rollers 22 and 22 are provided at their tips. 23 and weight 2
4, 25 are attached. A predetermined tension is applied to the wire 15 between the main rollers 11 to 13 by these weights 24 and 25.

A pair of slurry supply pipes 26 and 27 are disposed above the first main roller 11 and the second main roller 12, and the slurry supply pipes 26 and 27 are connected to the first main roller 11 and the second main roller 11. The slurry containing abrasive grains is supplied downward to the wire 15 between the main roller 12 and the main roller 12. The synthetic resin connector 31 that is the work is the first
It is arranged above the wire 15 between the main roller 11 and the second main roller 12 so as to be vertically movable. A plurality of works (connectors) 31 are sandwiched by dummy materials A and B from both ends and are housed in the holding case 51, and the wire 15 between the first main roller 11 and the second main roller 12 is held.
By being pressed against, the insulating groove 35 and the terminal 34 are formed in a predetermined portion of the connector 31 by the lapping action.

Next, the operation of forming the insulating groove in the connector 31 will be described. First, the connector 31 shown in FIG. 4 is molded by injection molding or the like. The connecting portion 32 of the connector 31 molded here is in a flat state, and the terminal 34 and the insulating groove 35 are not formed. Next, as shown in FIG. 5, contact point plating 33 is applied to the connecting portion 32 of the connector 31. Next, as shown in FIG. 3, contact plating 3
Connect the connector 31 with the lower part 3 to the wire 1 of the wire saw.
The plural sheets are set in the holding case 51 in the extending direction. Then, a large number of connectors 33 are sandwiched via the dummy materials A and B at both ends. In this state, while the wire 15 is traveling by the feeding device (not shown), the connector 3
By bringing 1 into contact with the wire 15, a terminal 34 and an insulating groove 35 are formed in the connector 31, as shown in FIG.

As shown in the figure, the width α of each insulating groove 35 is
Is 0.25 mm, and the depth β of the insulating groove 35 is 0.7.
~ 0.8 mm. This is because the size of the abrasive grains contained in the slurry is added to the diameter (0.18 mm) of the wire 15, so that the width α of the insulating groove 35 is slightly larger than the diameter of the wire 15. Also, the width γ of the terminal 34
Is 0.15 mm.

As described above, in this embodiment, the connector 31 is manufactured to obtain the following effects. (1) The insulating groove 35 of the connector 31 is formed by a wire saw. As a result, the insulating groove 35 having a narrow width can be easily formed all at once, and the pitch of the terminals 34 can be narrowed (about 1/2 or less of the conventional ratio). as a result,
A device such as a computer equipped with the connector 31 can be miniaturized.

(2) The wire saw is also used for processing a semiconductor material (silicon wafer) or the like which requires highly accurate processing. Therefore, the insulating groove 35 of the connector 31 can be processed with high precision. Further, unlike the punching process, the wire saw does not exert a great force on the connector 31, so that it is possible to prevent the terminal 34 from being chipped.

(3) Since it is not necessary to provide the mold for molding the connector 31 with the grooves 35 for insulation and the concavities and convexities to be the terminals 34, the cost for manufacturing the mold can be reduced. In addition, since the mold does not have fine irregularities that serve as the insulating groove 35 and the terminal 34, the molding is easy and the yield is improved.

(4) Since the insulating groove 35 and the terminal 34 can be formed in a plurality of connectors 31 at one time,
The cost can be reduced. (5) By forming the insulating groove 35 with the holding cover 51 accommodating the connector 31, it is possible to prevent the slurry from directly hitting the connector 31. As a result, peeling and damage of the contact plating 33 due to the abrasive grains in the slurry can be prevented, and the reliability of the connector 31 is improved.

(6) By cutting the dummy materials A and B together while sandwiching the plurality of connectors 31 between the dummy materials A and B, it is possible to prevent the cut portion from sagging, and the reliability of the connector 31 is also here. You can improve the property.

The present invention can also be configured as follows. (1) To be embodied by a method of manufacturing a connector other than a card edge connector. (2) Insulation groove 3 before contact plating on the connector 31
Form 5.

(3) By punching by pressing,
Forming the connector 31 before the insulating groove 35 is formed. (4) To form the insulating groove 35 without accommodating it in the holding case 51.

(5) Form the insulating groove 35 without sandwiching the connector 31 between the dummy members A and B.

[0036]

According to the connector manufacturing method of the first aspect, the pitch between the terminals can be processed with high precision. As a result, it is possible to reduce the size of the connector, which in turn reduces the size of equipment such as a computer.

[0037] In addition, because it can prevent the slurry hits the connector, it is possible to prevent the breakage of a connector according to the abrasive grains in the slurry. This makes it possible to manufacture a highly reliable connector.

Further , it is possible to prevent the cut portion of the connector from sagging, and it is possible to manufacture a more reliable connector.

[0039] According to the manufacturing method of the connector according to claim 2, in addition to the effects of the process of the connector of manufacturing according to claim 1, the insulation groove in a state where the contact plating on the end of the connector is formed form By doing so, manufacturing becomes easier than in the case where contact plating is formed only on the terminals later. Thereby, the cost can be reduced.

According to the connector manufacturing method of the third aspect , in addition to the effect of the connector manufacturing method of the first or second aspect , the insulating groove can be formed in a plurality of connectors at one time. Further, the cost can be further reduced.

[Brief description of drawings]

FIG. 1 is a perspective view of a connector.

FIG. 2 is a perspective view of a wire saw.

FIG. 3 is a side view of the wire saw.

FIG. 4 is a partial front view of the molded connector.

5 is a partial front view of the connector of FIG. 4 in which contact plating is applied.

6 is a partial front view of the connector of FIG. 5 in which an insulating groove is formed.

[Explanation of symbols]

11, 12, 13 ... Main roller, 15 ... Wire, 31
... Connector, 34 ... Terminal, 35 ... Insulation groove, 33 ... Contact plating, 51 ... Holding case, A, B ... Dummy material

─────────────────────────────────────────────────── ─── Continuation of the front page (58) Fields surveyed (Int.Cl. ⁷ , DB name) B24B 27/06 H01R 43/00 H01R 23/02 H01R 23/68

Claims (3)

(57) [Claims] 1. A wire spirally wound between a plurality of groove rollers is run, and a slurry containing abrasive grains is supplied to the wire to laminate a plurality of wires , and both ends are doubled.
A method of manufacturing a connector, in which an insulating groove between a plurality of terminals of a connector housed in a holding case in a state of being sandwiched by a Mie material is cut. 2. The insulating groove has a contact point at the end of the connector.
The method for manufacturing a connector according to claim 1, wherein the plating is performed and then cut and formed . 3. A plurality of connectors in the extending direction of the wire.
And the insulating groove is formed on each connector at the same time.
A method for manufacturing the connector according to claim 1 or claim 2.