CN1228628A - Electric connector and manufacturing method thereof - Google Patents

Abstract

An electric connector is composed of a base body with at least two rows of terminals fixed to it in alignment mode, pins at back end and contact part at front end, and features that the contact part is folded to become linear needle body, which is punched by plate material to become linear needle body, and the cross-section of contact part is in regular quadrangle or circular shape.

Description

Electrical connector and manufacturing method thereof

The present invention relates to an electrical connector and a manufacturing method thereof, in particular to a pin-hole electrical connector and a manufacturing method thereof.

Currently common electrical connectors, such as PIN HEADER, BOX HEADER, five-in-one connector for CD-ROM, or three-in-one for hard disk drive The connector is in the form of a terminal, and its contact portion is generally made into a solid square cross-section.

Please refer to Fig. 1, 2, it is a kind of known pin hole seat body (PIN HEADER), wherein, terminal 11 is equidistantly arranged on a plastic seat 12, and terminal 11 is to cut pin (PIN HEADER) with wire rod ), press the two ends 111 into a chamfer shape by rolling, so as to facilitate loading into the plastic seat, and then use the vibrating plate to arrange the pins on the track of the assembly machine, and then put them into the plastic seat. This manufacturing method, due to The terminal is in the form of scattered pins, and there is no connecting strip, so plating cannot be selected during electroplating, and the entire terminal can only be fully gold-plated or fully tin-plated; however, the best way of electroplating is to tin-plate the pins, contact Because gold has good electrical conductivity, it is suitable for plating on the contact part, and tin has good solderability, which is suitable for plating on the pin part. Moreover, gold is more expensive, and the whole gold plating is not economical. Moreover, the lead angle at both ends of the terminal is rolled It is processed by pressing, and the manufacturing method is relatively rough, and it is difficult to press the lead angle well.

If the above-mentioned terminal 11 is to be conveniently selected and plated, a material strip that can be used to clamp the terminal can be used, and the loose pins are discharged one by one into the clamping groove of the material belt through the feeding mechanism, so as to form a continuous connection with the material belt. Shaped pins can be adapted to the optional plating operation, but this method is labor-intensive and time-consuming, and at the same time increases the material consumption of the strip, and the processing cost is high.

Please refer to Fig. 3, since the pinhole base (PIN HEADER) can be connected in any direction when connecting the jumper (MINI JUMPER) 15, so the section of the terminal 11 is preferably made into a square.

Please refer to Fig. 4, it is the terminal 22 of the five-in-one connector that a kind of known optical disk memory (CD-ROM) uses, because it is made of 0.64mm plate thickness metal, take width also to be 0.64mm, namely It can be punched into a continuous square pin together with the material strip 25, and the chamfer 2211 of the contact part 221 can be cut more accurately. When it is installed in the seat body 20, it is broken to separate from the material strip and then bent, as shown in Figure 5 , because it is a continuous pin, it can be used for optional plating. The contact part 221 of the front section is gold-plated, the extension part 222 and the pin part 223 of the rear section are tin-plated, and the pin part 223 is easy to shrink or change. However, due to the terminal 22 The spacing is 2.54mm. Since the terminal is made of a 0.64mm wide plate, even if the hedge is 1.28mm, a lot of material is still wasted.

In addition, because the plate material used to make the terminal is relatively thick, when the extension part 222 is bent, a curved arc 224 is formed at the turning point. It is easy to slip when inserted), so when manufacturing, it is necessary to first install the shorter terminal 21 into the seat body 20 and then bend the extension part, and then install the longer terminal 22 into the seat body 20 and then bend the extension part. The two bending processes are relatively inconvenient, and the quality of the entire row of terminals is difficult to guarantee when bending.

The main purpose of the present invention is to provide an electrical connector that is easy to assemble and has high support strength.

Another object of the present invention is to provide a method for manufacturing an electrical connector in which terminals and strips are integrated during manufacture, so as to facilitate selective plating.

Another object of the present invention is to provide a method of manufacturing an electrical connector with simple procedures, so that the terminals can be easily protruded out of the housing, can be supported, and are not easily bent due to external forces.

To achieve the above object, the present invention takes the following technical measures:

An electrical connector of the present invention comprises a base body and at least two rows of terminals aligned and fixed on the base body, the base body is provided with sockets, the connecting portion is between the sockets, the rear section of the terminal is the pin portion, and the front section is the contact part;

It is characterized in that the contact part of the terminal is folded into a linear pin shape with the width of the plate, and the peripheral plate surface of the linear pin is the contact part for electrical connection.

The above-mentioned electrical connector is characterized in that the contact portion of the terminal is folded into three perpendicular planes with the width of the board, and the periphery of the cross-section is a regular quadrilateral.

Another electrical connector of the present invention includes a base body, the base body is provided with at least one box-shaped connection part, the box-shaped connection part is provided with at least two rows of terminals aligned and fixed on the base body, and the rear section of the terminal is a pin part , the front part is the contact part;

It is characterized in that the contact portion of the terminal is folded into a linear pin body by folding the width of the plate, and the peripheral plate surface of the linear pin body is the contact portion for electrical connection.

The above-mentioned electrical connector is characterized in that the contact portion of the terminal is formed by folding the width of the plate into three perpendicular plates, and the periphery of the cross-section is a regular quadrilateral.

The electrical connector is characterized in that the contact portion and the pin portion of the terminal are perpendicular to each other, an extension portion is formed between the contact portion and the pin portion, and the extension portion and the pin portion are plate-shaped, and the seat The back of the connecting part of the body is provided with a raised strip to support the vertical part of the terminal protruding from the body of the seat.

The above electrical connector is characterized in that grooves for locking the terminals are provided on the protruding strips.

A terminal for an electrical connector of the present invention, the rear part is a pin part, and the front part is a contact part;

It is characterized in that the contact part is stamped and folded into a linear needle body with the width of the plate, and forms a continuous terminal together with the material strip, and the periphery of the cross-section of the contact part is a regular quadrilateral.

The contact portion of the terminal of the electrical connector of the present invention can also be folded into other suitable shapes, such as a circle, around the width of the plate.

A method of manufacturing an electrical connector of the present invention, comprising the following steps:

a. On the seat body, process at least two rows of aligned sockets;

b. Stamping sheet metal to form sheet-shaped continuous terminals with equal intervals together with strips;

c. Fold the front section of the terminal into a linear needle shape with the width of the plate to form the contact part of the terminal;

d. Put the entire row of continuous terminals into the jacks of the seat body in sequence, and then break off the tape.

Another manufacturing method of an electrical connector of the present invention comprises the following steps:

a. On the seat body, process at least two rows of aligned sockets;

b. Stamping sheet metal to form sheet-shaped continuous terminals with equal intervals together with strips;

c. Fold the front section of the terminal into a linear needle shape with the width of the plate to form the contact part of the terminal; the extension part between the pin part and the contact part is a plate shape;

d. Bending the continuous terminal together with the material tape from the extension part first, so that the contact part and the pin part form an angle of 90 degrees or slightly less than 90 degrees;

e. Put the entire row of continuous terminals into the jacks of the seat body in sequence, and then break off the tape.

The manufacturing method of the electrical connector is characterized in that in the step a: the back of the base body is pressed with a raised strip to support the vertical part where the terminal protrudes out of the base body.

The manufacturing method of the electrical connector is characterized in that, in the step: a groove for locking the terminal is stamped on the protruding strip.

The features of the present invention are described in detail as follows in conjunction with the accompanying drawings and embodiments: Brief description of the accompanying drawings:

Fig. 1: the top view of the known pinhole type seat;

Fig. 2: the front view of the known pinhole type seat;

Fig. 3: the combined upper view of the known pinhole type seat;

Figure 4: A schematic front view of the terminal strip of the five-in-one connector used in the known optical disc storage;

Figure 5: A side sectional view of the combination of the terminal and the seat body of the five-in-one connector used in the known optical disc memory;

Figure 6: An exploded perspective view of the first embodiment of the present invention;

Figure 7: a sectional view of the contact portion of the terminal in the first embodiment of the present invention;

Figures 8 and 9: schematic diagrams of the manufacture of terminals in the first embodiment of the present invention;

Fig. 10: the front view of the second embodiment of the present invention;

Fig. 11: A schematic front view of the terminal together with the material tape and the extension part without bending in the second embodiment of the present invention;

Fig. 12: A schematic side view of the terminal together with the strip and the extended part bent in the second embodiment of the present invention;

Figure 13: a sectional view of the contact portion of the terminal in the second embodiment of the present invention;

Fig. 14: the sectional view of the second embodiment of the present invention;

Fig. 15: a cross-sectional view of the convex line on the back of the seat body in the second embodiment of the present invention;

Fig. 16: a sectional view of the contact part of the terminal in the third embodiment of the present invention;

Fig. 17: A sectional view of a contact portion of a terminal in a fourth embodiment of the present invention.

Please refer to Figures 6 and 7, in an embodiment of the electrical connector of the present invention, the center-to-center spacing of the terminals is 2.54mm, and it is provided with a base 31 and a plurality of terminals 32, wherein:

The seat body 31 is provided with two rows of equally spaced insertion holes 311 .

One end of the terminal 32 is a pin portion 322, and the other end is a contact portion 321. The contact portion 321 is punched and folded into a square cross-section with three board surfaces 3211, 3212, 3213 and a board thickness 3214 with the width of the board, and the contact portion 321 Bevels 323 are cut at the ends.

During manufacture, the terminal can be 0.2mm thickness matched with 1.27mm width D, and the hedging method is adopted as shown in Figure 8, which will not cause waste, and can be formed into two rows of continuous terminals 32 with material strips 33 after stamping, as shown in Figure 9 As shown, the terminal 32 is n-shaped and consists of three sides, the cross-section is a square of 0.64 mm, and the center-to-center distance between two ends is 2.54 mm.

The terminal 32 and the base body 31 are assembled by sorting the entire row of continuous terminals into the sockets of the base body respectively, and then breaking off the strips.

Please refer to FIG. 10, which is the second embodiment of the present invention, which is a five-in-one connector for optical disk storage, which includes first, second, third, fourth, and fifth connecting parts 41, 42, 43, 44 , 45, wherein the second and third connecting parts 42 and 43 are each provided with a row of long terminals 46 and short terminals 47 aligned up and down, the fourth and fifth connecting parts 44 and 45 are provided with a row of short terminals 47, and the first connecting part is provided with There are round terminals 48 .

Please refer to Figures 11, 12 and 13, the contact portion 461 of the long terminal 46 is punched and bent in the width direction of the plate to form a square with three plate surfaces 4611, 4612, 4613 and a plate thickness surface 4614, and together with the strip 35 Continuous terminals arranged at equal intervals, wherein the extension part 462 and the pin part 463 are not stamped into three boards, and a bump 464 and a reinforcing rib 465 are provided on the terminal, and the width of the rib part 463 is small, two The material strip 351 is formed on the side to facilitate the breaking of the terminal. The function of the bump 464 is to tighten the terminal and the seat body. The contact part 461 and the leg part 463 are bent at 90 degrees, and the front end of the contact part forms a chamfer 4615.

The short terminal 47 is substantially the same as the long terminal 46 except that the extension is shorter.

Please refer to Fig. 14, the backs of the second and third connecting parts 42 and 43 are provided with first and second protruding strips 401 and 402 respectively supporting the extension parts of the long and short terminals 46 and 47, so that the terminals 46 and 47 protrude from the seat body The vertical parts can be respectively supported by the first and second protruding strips 401 and 402, and will not be bent due to external force; please refer to Fig. 15, the protruding strips 401 are provided with spaced grooves 4011 to lock the terminals so as not to shift left and right.

The long and short terminals 46 and 47 of the present invention are made of thin plates, and the contact portion is folded into a linear needle body with the width of the plate. When stamping and bending make the contact part and the connecting foot part bend to 90 degrees, the thin sheet material is easy to bend, and the corner 466 will not have a large arc angle, so that it will not cause inconvenience when bending.

In this embodiment, a base 40 as described above is provided, and the second and third connecting parts 42, 43 on it are provided with two rows of aligned jacks; the long and short terminals 46, 47, as shown in Figure 11, The contact part 461 of the terminal is stamped and folded into a square linear needle body with the width of the plate, and the extension part 462 and the leg part 463 are not punched, but are still in the shape of a sheet, and are continuous terminals arranged at equal intervals together with the strips. Bend the extension part 462 so that the contact part 461 and the pin part 463 are at 90 degrees, as shown in Figure 12; The extension part of the long terminal falls into the groove of the raised bar 402 and is supported and positioned. Then, the long terminal 46 is inserted into the seat body 40 and the material tape is folded off, so that the extended part 462 of the long terminal falls into the groove of the raised bar 401, and the assembly is very It is convenient and saves the step of bending the terminal. During the punching process of the terminal, the extension part is directly bent, which is very easy to process and will not affect the working hours of the finished product assembly.

Please refer to FIGS. 16 and 17 , the contact portion of the terminal according to the embodiment of the present invention can also be punched and folded into a circular hollow linear needle or an arc-shaped hollow linear needle.

Compared with the conventional electrical connector, the electrical connector of the present invention has the following effects:

1. It is convenient for plating and assembly, and the chamfering angle of the terminal processed by stamping is more accurate than that of rolling;

2. The vertical part of the terminal is supported, each terminal has a correction line, and will not be bent by external force.

3. Since the terminal can be locked by the slot of the convex strip, it will not shift left and right.

4. The convex strips on the back of the seat can increase the strength and prevent warping.

Compared with the previous manufacturing method, the manufacturing method of the electrical connector of the present invention has the following effects:

The method of the present invention is mainly that the terminal is stamped into a pin with a square cross-section with the width of the sheet material, and the thin sheet material can be matched with the terminal spacing to design a continuous terminal with a material strip. The specific description is as follows:

1. Save material.

2. It is made into a continuous terminal together with the strip, which is convenient for the electroplating process.

3. It is made into a continuous terminal, which is very convenient and fast to assemble on the base.

4. Save a bending process when assembling the finished product.

5. It can improve the qualification rate of products, because the bending process is reduced in the assembly of finished products, and the defective products will naturally be reduced.

Claims (19)

1, a kind of electric connector comprises that a pedestal reaches the terminal that pedestal is fixed at least two row's alignment, and pedestal is provided with jack, is connecting portion between jack, and the back segment of terminal is a pin portion, and leading portion is a contact site;

It is characterized in that the contact site of terminal encloses with the sheet material width and is converted into linear needle body shape, and the contact site of the peripheral board face of linear needle body for being electrically connected.

2, electric connector according to claim 1 is characterized in that, the contact site of described terminal encloses with the sheet material width and is converted into three perpendicular plate faces, and cross-sectional circumference is square.

3, electric connector according to claim 2 is characterized in that, the cross-sectional circumference of described contact site is square.

4, a kind of electric connector comprises a pedestal, and pedestal is provided with a box-like connecting portion at least, and box-like connecting portion is provided with the terminal that pedestal is fixed at least two row's alignment, and the back segment of terminal is a pin portion, and leading portion is a contact site;

It is characterized in that the contact site of terminal is to enclose with the sheet material width to be converted into linear needle body, the contact site of the peripheral board face of linear needle body for being electrically connected.

5, electric connector according to claim 4 is characterized in that, the contact site of described terminal is to enclose with the sheet material width to be converted into three perpendicular plate faces, and cross-sectional circumference is square.

6, electric connector according to claim 5 is characterized in that, the cross-sectional circumference of described termination contact portion is square.

7, according to claim 1 or 4 described electric connectors, it is characterized in that, the contact site of described terminal is vertical mutually with pin portion, form extension between contact site and the pin portion, extension and pin portion are en plaque, the connecting portion back side of described pedestal is provided with raised line, stretches out the outer vertical position of pedestal to be supported in terminal.

8, electric connector according to claim 7 is characterized in that, described raised line is provided with the groove of the described terminal of fastening.

9, a kind of connector terminals that is used for, its back segment is a pin portion, leading portion is a contact site;

It is characterized in that contact site is to enclose with the punching press of sheet material width to be converted into linear needle body, and form continuous terminal, the contact site of the cross-sectional circumference peripheral board face of contact site for being electrically connected together with strip.

10, electric connector according to claim 9 is characterized in that, described contact site encloses with the sheet material width and is converted into three perpendicular plate faces, and cross-sectional circumference is square.

11, electric connector according to claim 10 is characterized in that, the cross-sectional circumference of described contact site is square.

12, a kind of electric connector making method may further comprise the steps:

A. on pedestal, the jack of alignment is arranged in processing at least two;

B. with the equally spaced sheet continuous terminal of plate stamping formation together with strip;

C. with the sheet material width leading portion of terminal is enclosed and be converted into linear needle body shape, form the contact site of terminal;

D. will the row's of putting in order continuous terminal according to pack into the jack of pedestal of ordering, strip again fractures.

13, electric connector making method according to claim 12 is characterized in that, described step c: the contact site of terminal encloses with the sheet material width and is converted into three perpendicular plate faces, and cross-sectional circumference is square.

14, electric connector making method according to claim 12 is characterized in that, the cross-sectional circumference of the contact site of described terminal is square.

15, a kind of electric connector making method may further comprise the steps:

A. on pedestal, the jack of alignment is arranged in processing at least two;

B. with the equally spaced sheet continuous terminal of plate stamping formation together with strip;

C. with the sheet material width leading portion of terminal is enclosed and be converted into linear needle body shape, form the contact site of terminal; Pin portion and and contact site between extension be en plaque;

D. will bend from extension together with the continuous terminal of strip in advance, make contact site and pin portion form 90 and spend or be slightly less than the angles of 90 degree;

E. will the row's of putting in order continuous terminal according to pack into the jack of pedestal of ordering, strip again fractures.

16, electric connector making method according to claim 15 is characterized in that, described step c: the contact site of terminal is to enclose with the sheet material width to be converted into three perpendicular plate faces, and cross-sectional circumference is square.

17, electric connector making method according to claim 16 is characterized in that, described step c: the cross-sectional circumference of the contact site of terminal is square.

18, electric connector making method according to claim 15 is characterized in that, among the described step a: the back side of pedestal is suppressed with raised line, stretches out the outer vertical position of pedestal to be supported in terminal.

19, electric connector making method according to claim 18 is characterized in that, in the described step: the groove that is pressed with the described terminal of fastening in the raised line upper punch.

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