CN1237019A

CN1237019A - Method of manufacturing electrical connector

Info

Publication number: CN1237019A
Application number: CN 99107962
Authority: CN
Inventors: 小J·H·查韦茨; Y·T·雅普
Original assignee: Molex LLC
Current assignee: Molex LLC
Priority date: 1998-05-22
Filing date: 1999-05-21
Publication date: 1999-12-01
Also published as: JP3092067B2; EP0959538A3; JPH11345675A; TW451534B; EP0959538A2

Abstract

A method is provided for manufacturing an electrical connector module (12). The method includes the steps of stamping from conductive sheet metal material a blank (36) including a plurality of circuits (18). At least two of the circuits are joined by a web (38) of the sheet metal material. The stamped blank is placed into a first molding die (46). A second molding die (58) is closed onto the first molding die and the web (38) is concurrently sheared. A dielectric housing (16) is molded about portions of the sheared circuits (18) to form the connector module (12).

Description

Electric connector making method

The present invention relates generally to electric connector field, relate in particular to the electric connector making method as the miniature motor mounted connector.

Usually, basic electric connector comprises the insulation crust of certain form, and this shell is equipped with a plurality of conducting wires, contact and/or terminal.For example, insulation crust is generally molded plastic housing.Circuit or terminal are formed by metal material thin plate impression usually.Circuit or terminal are installed in the shell.In some applications, can around part circuit or terminal, carry out overmolded to plastic casing.Along with electronic component miniaturization day by day, make above-mentioned this electric connector difficulty more.For example, incused circuit or terminal are very little usually and very accurate.If impress, then be difficult to the element that these are small and be inserted in the insulation crust as discrete elements.In the overmolded process with during keeping the circuit appropriate location, fixing small and complicated circuit also is extremely difficult.The present invention aims to provide a kind of manufacture method that solves these different problems.

Therefore, the purpose of this invention is to provide a kind of new improving one's methods of making the electric connector module as the miniature motor mounted connector.

In exemplary embodiment of the present invention, described method comprises by step that comprises the blank of a plurality of circuits of conductive metallic material thin plate impression.At least two web connections that link tester is crossed the metal material thin plate in the circuit.The blank of impression is put into first pressing mold.Second pressing mold is closed on first pressing mold, shears simultaneously and flexural web, forms the slit between sheared edge.Around part is sheared circuit, insulation crust is carried out molded to form connector modular.By utilizing pressing mold to shear and separating circuit, will circuit do not generate pressing mold one by one individually or insert in the prefabricated shell.

Just as disclosed in this, the shearing of the web of connection line and bending realize by cutting out section second pressing mold.Line terminal can be formed by blank before blank being navigated in first pressing mold.

According to a further aspect in the invention, blank can bring impression with the carriage that is connected at least one circuit by bridge part.Then, molded module moves to another station on described carriage tape, and described there bridge part is cut off subsequently.

Another feature of the present invention is that the edge at least one circuit carries out pressure-sizing in the imprint step process.Then at the edge molded about insulation crust after the pressure-sizing so that circuit is anchored on the shell.

Other purposes of the present invention, feature and advantage can obviously show in the detailed description of doing below in conjunction with accompanying drawing.

Novel characteristics of the present invention special proposition in additional claim.By can best understanding the present invention and purpose and advantage with reference to the following explanation done in conjunction with the accompanying drawings, wherein, identical Reference numeral be represented identical parts in the accompanying drawing.In these accompanying drawings:

Fig. 1 is the perspective view that assembles and be installed in the motor mounting connector on the printed circuit board (PCB) according to the present invention;

Fig. 2 is and the similar perspective view of Fig. 1 perspective view to have the connector that miniature motor is installed;

Fig. 3 is the top perspective view by the incused blank of metal material thin plate;

Fig. 4 is the bottom perspective view of blank;

Fig. 5 is the top perspective view of blank location first pressing mold thereon;

Fig. 6 is the perspective view of blank location first pressing mold thereon;

Fig. 7 is the perspective view of second pressing mold of closure on first pressing mold;

Fig. 8 is and the similar view of Fig. 6 perspective view, but shown by the pressing mold of Fig. 7 and shear and crooked blank, owing to second pressing mold be positioned at first pressing mold above, so this figure is normally invisible in the practice of reality;

Fig. 9 is presented at the perspective view of removing second pressing mold behind the molded connector modular;

Figure 10 removes and the perspective view of the molded connector modular that still is connected with the carriage tape of blank from pressing mold; And

Figure 11 is one of them circuit cross section of overmolded shell around the circuit edge that is presented at after the pressure-sizing.

In more detail with reference to the accompanying drawings, at first with reference to figure 1, the present invention relates to a kind of method of making the electric connector module, for example the miniature motor mounted connector 12.Connector modular be installed in printed circuit board (PCB) 14 above.Module comprises integral insulation shell 16, and this shell is single molded by plastic material or materials similar.Shell is equipped with four circuits 18.Circuit has and is used for the afterbody 18a that for example connects by welding, serves as circuit backing plate 20 with circuit backing plate 18b on printed circuit board (PCB) 14.One of circuit comprises side contact arm 22.Independent terminal 24 also is installed on the shell 16 and comprises end contact arm 26, is used from the circuit backing plate 30 that engages on the printed circuit board (PCB) with afterbody 28 1.

Fig. 2 shows the connector modular 12 that Fig. 1 installs miniature motor 32.Electric tools is useful on the side contact (sightless) of the side contact arm 22 that engages one of them circuit 18.Motor also has the end contact 34 of the end contact arm 26 that is used for splice terminal 24.Motor 32 can be the small vibrating motor, the vibrating motor that for example uses in mobile telephone system.

The first step of manufacturing method according to the invention is shown in Fig. 3 and 4.More precisely, blank 36 is formed by conductive metallic material thin plate impression.As can be seen, blank comprises the side contact arm 22 of afterbody 20 and one of them circuit of circuit 18, circuit.Should be pointed out that circuit connects by five web parts 38.In addition, two outside lines are connected to rectangle carriage tape 40 by a pair of bridge part 42.At last, impress location holes 44 at four angles of carriage tape 40.

Fig. 5 shows first or the base pressure mould 46 that is used to realize manufacture method of the present invention.In this, should be understood that the connector modular 12 especially accurate shape or the structure of motor casing 16 is used and can be very different according to related connector.Principle of the present invention can be widely used for relating to the plastic moulding module of circuit, contact or the terminal of overmolded.Therefore, the accurate complexity of different die cavitys and die cavity part is not done detailed description at this in the pressing mold.It should be noted that base pressure mould 46 has the die cavity of the plastic material of the fusing that the electric connector structure of accommodating and expecting adapts.

Based on such understanding, base pressure mould 46 has a plurality of upright location binding posts 48.As mentioned below, base pressure mould 46 also has four platforms 50, placement blank 36 on platform.Each platform 50 has accommodating of the formation of shearing and caves in or groove 52.This groove 52 not only has a shear surface that the edge is cut that allows web part 38, and allows the web part to form the opposite edges bent around in slit at it between sheared edge.In addition, one of them platform defines an extra shear surface 54.Need explanation, base pressure mould 46 has the die cavity device 56 that is used for accommodating the injection molded process plastic material.At last, the base pressure mould has the side 57 of inclination.

The location binding post 48 that Fig. 6 shows along with pressing mold stretches out the blank location hole, and blank 36 is placed on the base pressure mould 46.As can be seen, four circuits still connect by web 38, and circuit network still is connected to carriage tape 40 by bridge part 42.

After being placed on web 36 on the base pressure mould as shown in Figure 6, roof pressure mould 58 (Fig. 7) is in the top of base pressure mould closure.Figure 7 shows that roof pressure mould 58 below.The roof pressure mould comprises the plane area 60 in the combined planar district that engages circuit 18.The roof pressure mould comprises that also the section 62 that forms side plane surface 64 is to engage circuit backing plate 18b.Therefore, when and plastic material fusing closed when pressing mold injects die cavity device 56, because the planar section 60 and 64 of roof pressure mould engages with the outer surface of circuit and circuit backing plate, so plastic material will be mobile around the lateral edges of the lateral edges of circuit 18 and circuit backing plate and get in outer surface level surface that do not flow to circuit and circuit backing plate.

Still with reference to figure 7, roof pressure mould 58 comprises five cutters or cutting out section 66, when closed pressing mold, shears shape accepting groove 52 and 54 alinements in the platform 50 of they and shown in Figure 5 and above-mentioned base pressure mould.When pressing mold was closed, cutting out section 66 was effectively sheared or is cut off and crooked five web parts 38 that connect four circuits 18.The last closed procedure of this shearing and bending operation and pressing mold takes place substantially simultaneously, effectively circuit 18 is clipped between the platform 50 of the plane area 60 of roof pressure mould and base pressure mould, also contact backing plate 18b is clipped in simultaneously between the side surface 57 of the plane surface 64 of roof pressure mould and base pressure mould.In other words, circuit is cut off when circuit is clamped between the pressing mold basically, makes the impression circuit remain on accurate relative position.

Figure 8 shows that the blank 36 on base pressure mould 46, the web between the circuit is cut off and is crooked.This figure draws simply so that understand the present invention better.Should be understood that, unless before plastic material injects the assembling mould, the roof pressure mould is removed from the base pressure mould, this state is impossible occur in the practice of reality.Usually can not occur though this figure is painted in the practice, help complete understanding the present invention in this this drawing.

The method according to this invention, next step is to be closed when being separated by cutting off web part 38 with circuit 18 when pressing mold, respectively injection molding motor casing 16 (Fig. 1) in the die cavity device 56 (Fig. 5) between base pressure mould 46 and roof pressure mould 58.

Figure 9 shows that under the situation of removing roof pressure mould 58, motor casing around circuit and related elements thereof by fully molded.Will outmost circuit except bridge part 42 be connected to the carriage tape 40, circuit and related elements thereof are electrically isolated from one at present.

As shown in figure 10, the parts and the circuit 18 of the motor casing 16 of overmolded still are connected to carriage tape 40, remove from base pressure mould 46 then.Except still passing through bridge part 42 and carriage tape is connected, connector modular is all finished.Therefore, the module of overmolded can be moved, handles or be transported to station subsequently.For example, the module of overmolded can move to the station that is connected with printed circuit board (PCB) 14 as shown in Figure 1.Before the station subsequently or at station, bridge part 42 (Figure 10) is cut off at 70 places (Fig. 1), make connector modular 12 become finished product completely.For example, can as shown in Figure 1 module be welded on the printed circuit board (PCB) 14 accommodating motor 32 shown in Figure 2, thereby, on printed circuit board (PCB), motor and suitable wire trace are interconnected.

At last, Figure 11 shows one aspect of the present invention, wherein, can carry out pressure-sizing at 72 places to be easy to grappling circuit or circuit backing plate in the plastic material of motor casing 16 to circuit 18 and/or circuit backing plate 18b.Particularly, can be in the impression of blank 36 and forming process the pressure-sizing edge.Because the edge of circuit and/or circuit backing plate or angle are by pressure-sizing or by recessed, plastics can flow through the pressure-sizing edge at 74 places of Figure 11, thus on motor casing grappling circuit and/or circuit backing plate.

Be understandable that the present invention can implement with other specific forms under the situation of its theme or central feature.Therefore all examples and embodiment are exemplary and nonrestrictive, and the present invention is not restricted to concrete details at this and describes.

Claims

1. the manufacture method of electric connector module (12), the step that comprises has:

Impress the blank (36) that comprises a plurality of circuits (18) by the conductive metallic material thin plate, have at least two link testers to cross the web of described metal material thin plate (38) and connect;

Blank after the described compacting (36) is put into first pressing mold (46);

Closed second pressing mold (58) and shear described web (38) simultaneously on described first pressing mold; And

Part circuit (18) molded about insulation crust (16) after described shearing is to form described connector modular (12).

2. method according to claim 1, the shearing of wherein said web (38) realizes by described second pressing mold of cutting out section (58).

3. method according to claim 1 is included in the terminal (18a, 22) that is formed described circuit (18) before navigating to described blank in described first pressing mold by described blank (36).

4. method according to claim 1, wherein said blank (36) impresses with the carriage tape (40) that is connected with at least one circuit (18) by bridge part (42).

5. method according to claim 4 is included in described carriage tape (40) and upward described molded module (12) is moved to the another location and cuts off the step of described bridge part (42).

6. method according to claim 1 is included in the edge of at least one described circuit (18) of pressure-sizing during the described imprint step, and at molded about (74) insulation crust (16) of pressure-sizing edge (72) with the described circuit of grappling in described shell.

7. the manufacture method of miniature motor mounted connector (12), the step that comprises has:

By conductive metallic material thin plate impression and forms blank (36), described blank comprises a plurality of circuits with at least one contact arm (22), has at least two link testers to cross the web of described metal material thin plate (38) connection;

The blank (36) that described compacting forms is put into first pressing mold (46);

Closed second pressing mold (58) and shear described web (38) simultaneously on described first pressing mold (36); And

Circuit after described shearing (18) part molded about isolative motor shell (16) is to form described motor mounting connector (12).

8. method according to claim 7, the shearing of wherein said web (38) realizes by the cutting out section (66) of described second pressing mold (58).

9. method according to claim 7, wherein said blank (36) impresses with the carriage tape (40) that is connected with at least one circuit (18) by bridge part (42).

10. method according to claim 9 is included in described carriage tape (40) and upward described molded module (12) is moved to the another location and cuts off the step of described bridge part (42).

11. method according to claim 7 is included in the edge of at least one described circuit (18) of pressure-sizing during the described imprint step, and at molded about (74) insulation crust (16) of pressure-sizing edge (72) with the described circuit of grappling in described shell.