JP2000348842A - Manufacture of electrical connector - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a manufacturing method of an electrical connector, offering stable contact and holding force of its contacts, not requiring much assembling manpower. and capable of facilitating the manufacture of the electrical connector. SOLUTION: By this method, an electrical connector 10 for mounting a card therein is manufactured that is made up of contact parts 38 making contact with a card, contacts 16 each comprising a fixed part fixed to blocks A12, B14 and a connection part 24 to a substrate, the block B14 used for fixing the contacts 16 thereon, and the block A12 used for holding/fixing the block B14 thereon and having card insertion parts. According to the manufacturing method, firstly, the contacts 16 are molded, secondly, after a required number of contacts 16 are mounted in a die assembly, the block A12 and block B14 are integrally molded at the same time, and thirdly, the block B14 is turned and fixed to the block A12.

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 electrical connector used for a portable telephone or the like.

[0002]

2. Description of the Related Art A method of manufacturing a conventional electrical connector 70 will be described with reference to the drawings. FIG. 4A is a perspective view of a conventional electrical connector when viewed from a board connection direction.
(B) is a perspective view of the conventional electrical connector as viewed from the card mounting direction. FIG. 5A is a side view of a conventional block B and a contact, and FIG.
FIG. 6 is a side view of a state in which the and contacts are mounted on a block B. The conventional electrical connector 70 mainly includes electrically insulating blocks A72 and B74 and contacts 76. As shown in FIG.
A card insertion part 36 into which a card (not shown) is inserted
The card insertion portion 36 is provided with a mounting hole 40 in which the contact 76 is mounted, and the contact portion 38 of the contact 76 projects to contact the mounting hole 40 with the card. As shown in FIG.
6 is a bent portion 1 folded at one end of the block B74.
8 is formed, the tip of which protrudes from the other end of the block B74 and is bent at a substantially right angle on its extension, and the connecting portion 2 connected to a substrate (not shown) is formed at the tip of the block B74.
4 is formed in a curved shape.

A method of manufacturing the conventional electrical connector 70 will be described. First, block A72 and block B7
The contacts 4 and the contacts 76 are formed in a predetermined shape by injection molding or press working of a known technique. Second, FIG.
As shown in (A), the contact 76 is inserted into the block B74 at the arrow "C", and then a predetermined position of the block B74 is caulked with a jig or the like. Third, as shown in FIG. 5B, the block B74 on which the contact 76 is mounted is inserted into the block A72 in the direction of arrow "d", and then the caulking projection 48 is thermally caulked. Fourth, a predetermined portion of the convex portion 22 of the block A72 is caulked so that the connecting portion 24 of the contact 76 inserted into the mounting portion 26 of the block A72 does not come off.

[0004]

In the method of manufacturing an electrical connector as described above, a block B is used as shown in FIG.
Since the contact portion 38 of the contact 76 fixed to 74 is fixed in a state of being floated from the block B74, it is difficult to make a contact position when fixed to the block A72, which causes a contact failure. There were challenges. Further, since the contact 76 is fixed to the block B74 only by caulking, there is also a problem that the contact 76 is pressed down and the holding force of the contact 76 is low. There is also a problem that the shape of the contact 76 is complicated and the contact 76 is deformed before assembling. In addition, there are also problems that the shape of the contact 76 is complicated, which requires a lot of man-hours for management, and that the number of parts is large, so that the number of assembling man-hours increases, leading to an increase in cost.

SUMMARY OF THE INVENTION An object of the present invention is to provide a method of manufacturing an electrical connector, which can provide stable contact and holding force of the contact, does not require assembling steps, and can be easily manufactured.

[0006]

An object of the present invention is to provide a method of manufacturing an electrical connector 10 to which a card is mounted, wherein a contact portion 38 with the card, a fixing portion fixed to each of the blocks A12 and B14, and a substrate are provided. Contact 1 consisting of connection part 24
6 and a block B14 to which the contact 16 is fixed.
And a block A12 holding and fixing the block B14 and having a card insertion portion 34. In the method of manufacturing the electrical connector 10, first, the contacts 16 are formed, and secondly, a required number of contacts 16 are formed. The block A12 and the block B14 are simultaneously formed integrally after being mounted on the mold, and thirdly, the process of rotating the block B14 and fixing the block A12 to the block A12 can be sequentially performed to achieve the manufacturing method of the electrical connector 10. A protrusion 20 is provided on the block A as a fulcrum for rotating the block B14. By providing the projection 20 on the block A, the block B
Rotation can be easily performed with the projection 14 as a fulcrum. Also, the required number of contacts 16 are transferred to the intermediate carrier 60.
Then, a groove 56 for guiding the contact 16 is provided on the protrusion 20 of the block A12. By integrating the contact 16 with the intermediate carrier 60, the contact 1
6 is easy to manage without falling apart, and by providing the groove portion 56 in the projecting portion 20 of the block A12, it serves as a guide when the contact 16 is bent.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A method for manufacturing an electrical connector according to the present invention will be described with reference to FIGS. FIG. 1 (A)
FIG. 3 is a perspective view when the electric connector of the present invention is viewed from the board connection direction, and FIG. 3B is a perspective view when the electric connector of the present invention is viewed from the card mounting direction. FIG. 2A is a side view of a state in which the contacts are integrally formed with the blocks A and B, and FIG. 2B is a plan view of a state in which the contacts are integrally formed with the blocks A and B. FIG. 3 is a plan view of the contact of the present invention. The electrical connector 10 of the present invention is mainly composed of blocks A12 and B14 and contacts 16 as in the prior art. First, differences between the electrical connector 10 and the conventional electrical connector 10 will be described. Conventionally, the block A72 and the block B74 are formed as separate components, but in the present invention, the block A12 and the block B14 are formed at the same time. Since the contacts 16 are formed at the same time, the position of the bent portion 18 of the contact 16 is smaller than that of the conventional electrical connector 70 in the block B1.
The length of the protrusion from the contact 4 is long, and contact holding portions 28 for a required number of contacts are provided at predetermined positions of the blocks A12 and B14.
Other shapes and sizes are the same as the conventional one.

First, a method of manufacturing the electrical connector 10, which is a point of the present invention, will be described. As a manufacturing method, the following steps are performed. First, the contact 16 is formed. Second, the required number of contacts 16
After being mounted on the mold, the block A12 and the block B14 are simultaneously formed integrally. Third, the block B14 is rotated and fixed to the block A12. In order to improve the connectivity to the board, a fourth portion of the convex portion 22 of the block A12 is caulked so that the connection portion 24 of the contact 16 inserted into the mounting portion 26 of the block A12 does not come off. It is desirable to carry out the step of: Hereinafter, each step will be described in detail.

First, the molding of the contact 16 in the first step will be described. The contact 16 is made of metal and is made by a known technique such as press working. The material is required to be conductive, and examples thereof include brass, beryllium copper, and phosphor bronze. Considering spring properties and cost, phosphor bronze is preferred. As shown in FIG. 3, the contact 16 includes a contact portion 38 that contacts the card and a block A1.
2 and a fixed portion fixed to the block B14, and a connecting portion 24 connected to the substrate, and the contact portion 38 and the connecting portion 24 have a curved shape. A required number of contacts 16 are integrally formed by a carrier 58 and an intermediate carrier 60. The method of manufacturing the contact 16 is performed by press working as described above. First, punching is performed from a plate material into a predetermined shape, and then bending of the contact portion 38 and the connecting portion 24 is performed simultaneously or separately. To do. Punching and bending are performed in a series during press working.

Next, the integral molding in the second step will be described. The term “integral molding” as used herein refers to simultaneous molding of the block A12 and the block B14 on the contact 16. The block A12 and the block B14 are made of an electrically insulating plastic, are formed by injection molding or the like of a known technique, and are required to have moldability and dimensional stability. Therefore, polybutylene terephthalate (PBT) and polyamide ( 46PA, 66PA) and liquid crystal polymer (LC
P), polyphenylene sulfide (PPS), polyethylene terephthalate (PET) and the like. PBT is preferable in consideration of moldability and cost. If heat resistance is required in customer specifications, LCP is preferred. In the integral molding, first, the contact 16 integrally formed in the first step is set at a predetermined position of a mold, then the mold is closed, and a molten plastic material is injected into the mold. Open the mold and take out the one shown in FIG. 2 from the mold.
In FIG. 2, a contact pressing portion 28 is for suppressing the contact 16 from moving due to the injection pressure when the plastic material is injected. That is, the contact 16 is sandwiched between pins and the like arranged in the mold. Therefore, the block B14 is provided with the contact holding portions 28 on both sides in the thickness direction, and the block A12 is provided with the contact holding portions 28 only on the card insertion portion 36 side. Since the contact 16 protrudes from the block A12 on the side opposite to the card insertion portion 36, the contact 16 can be suppressed by the protruding portion. However, in order to securely fix the contact 16 to the block A12, the protrusion 20 and the contact pressing protrusion A46 and the contact pressing protrusion B50 are provided on the surface opposite to the card insertion portion 36. The positions of the contact pressing protrusions A46 and the contact pressing protrusions B50 are provided in the vicinity of the mounting holes 40 in which the contact portions 38 of the contacts 16 arranged on the left and right (left and right directions in FIG. 2) are mounted. The role and position of the projection 20 will be described in the next step. Further, the block A12 is provided with a plurality of holes 54, and these holes are provided so as not to have a complicated slide mechanism in the mold structure.

Next, a rotation process of the block B14 will be described with reference to FIG. First, from the state where the integrated molding has been completed first, the carrier 5 is fixed with a jig or the like (not shown).
8 and the intermediate carrier 60 on the connection part 24 side and the contact part 38 side
Are simultaneously cut and removed. Next, the block B14 is rotated in the direction of arrow "B" as shown in FIG. 2A using a jig (not shown). Explaining only the movement of the connecting portion 24 based on FIG. 2A, the connecting portion 24 is at the point A at the end of the integral molding, and when the block B14 is rotated, the connecting portion 24 also rotates together with the block B14. Then, via the point B in the middle of rotation, the terminal 24 finally rotates to the point C, and the connecting portion 24 is moved to the block A1.
The second protrusion 22 is mounted and fixed in the mounting groove 26. It is better to provide the projection 20 on the block A12 as a pivot point for rotation. With the provision, the rotation can be easily performed with the protrusion 20 of the block A12 as a fulcrum. Also,
The protrusion 20 is provided with a groove 56 for guiding the contact 16, and a bent portion 18 of the contact 16 is formed beside the protrusion 20. However, in order to bend the contact 16 and rotate the block B14 to more reliably fix the block B14 at a predetermined position, a pin 42 or the like is inserted beside the protrusion 20 of the block A12, and the pin 42 is inserted. Ideally, the rotation is performed with the fulcrum. That is, the contact 16 is bent along the pin 42, and the bent portion 18 is formed. This pin 42
Any shape may be used as long as the contact 16 can be bent, as long as it can be a circle or a square. However, considering the load on the contact 16 and the like, a circle is ideal.

As the block B14 is rotated, when the connecting portion 24 of the contact 16 reaches the point C, the crimping projection 48 of the block A12 is inserted into the crimping hole 52 of the block B14. In this state, the caulking protrusion 48 is caulked by heat caulking or the like to thereby block B14.
Is fixed to the block A12. Also, block B1
4 is fixed to the block A12, the block B
The block B1 includes a plurality of protrusions 44 provided on the block B1.
There is a gap between the block 4 and the block A12. this is,
This is to prevent the block B14 from being affected by warpage during molding.

As a fourth step, in order to enhance the connectivity to the substrate, the projection of the block A12 is raised so that the connection portion 24 of the contact 16 inserted into the mounting portion 26 of the block A12 does not come off, as in the prior art. A step of caulking a predetermined portion of the part 22 is performed.

[0014]

According to the present invention, the following remarkable effects can be obtained by employing the above-described manufacturing method. (1) The contact 16 is connected to the block A12 and the block B1.
4, the position close to the contact portion 38 of the contact 16 is securely held by the contact holding portion A46 and the contact holding portion B50 of the block A12, so that the contact portion 38 does not vary and stable contact is achieved. Is obtained. (2) The contact 16 is connected to the block A12 and the block B1.
By forming the contact 4 integrally, a stable holding force of the contact 16 can be obtained. (3) Since the shape of the contact 16 is formed after integral molding, the shape of the contact 16 after pressing is less complicated than in the past, so that the contact 16 is not deformed during assembly, and the contact 16 is managed. It requires less man-hours. (4) Since the block A12 and the block B14 are integrally molded at the same time, the number of parts can be reduced, and the cost can be reduced. (5) Since the required number of contacts 16 are integrally formed with the carrier 58 and the intermediate carrier 60, the contacts 16
Can be easily mounted on a mold. (6) By providing the projection 20 on the block A12 as a fulcrum when the block B14 is rotated, the block B14 can be easily rotated and the block B14 can be fixed at a stable position. (7) Since the groove 56 is provided in the projection 20 of the block A12, it serves as a guide when the contact B is bent by rotating the block B14, and the block B14 can be easily fixed at a predetermined position.

[Brief description of the drawings]

FIG. 1A is a perspective view of an electrical connector of the present invention when viewed from a board connection direction. (B) It is a perspective view when the electric connector of the present invention is seen from the card mounting direction.

FIG. 2A is a side view of a state in which contacts are integrally formed simultaneously with blocks A and B. (B) It is a top view in the state where a contact was integrally formed simultaneously with blocks A and B.

FIG. 3 is a plan view of the contact of the present invention.

FIG. 4A is a perspective view of a conventional electrical connector when viewed from a board connection direction. (B) It is a perspective view when the conventional electric connector is seen from the card mounting direction.

FIG. 5A is a side view of a conventional block B and a contact. (B) It is a side view in the state where the conventional block A and the contact were attached to the block B.

[Explanation of symbols]

 10, 70 Electrical connector 12, 72 Block A 14, 74 Block B 16, 76 Contact 18 Bent portion 20 Projecting portion 22 Convex portion 24 Connecting portion 26 Mounting groove 28 Contact holding portion 30 Caulking portion 32 Stopper 34 Card holding portion 36 Card Insertion part 38 Contact part 40 Mounting hole 42 Pin 44 Projection 46 Contact holding projection A 48 Caulking projection 50 Contact holding projection B 52 Caulking hole 54 Hole 56 Groove 58 Carrier 60 Intermediate carrier

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Claims (3)

[Claims] 1. A method for manufacturing an electrical connector to which a card is mounted, comprising: a contact comprising a contact portion with the card, a fixing portion fixed to each of the blocks A and B, and a connection portion with a substrate; In a method for manufacturing an electrical connector comprising: a block B to which is fixed, and a block A to which the block B is held and fixed and which has a card insertion portion, a contact is first formed, and A method for manufacturing an electrical connector, comprising: a step of integrally forming blocks A and B at the same time after mounting a contact on a mold; and a third step of sequentially rotating and fixing the block B to the block A. 2. A projection is provided on the block A as a fulcrum for rotating the block B.
A method for manufacturing the electrical connector according to the above. 3. The method for manufacturing an electrical connector according to claim 2, wherein a required number of contacts are integrally formed with an intermediate carrier, and a protrusion for guiding the contacts is provided in the protrusion of the block A.