CN1691420A

CN1691420A - Electrical connector

Info

Publication number: CN1691420A
Application number: CNA2005100701055A
Authority: CN
Inventors: 安井伸一
Original assignee: 松下电器产业株式会社
Current assignee: PHC Holdings Corp
Priority date: 2004-04-28
Filing date: 2005-04-28
Publication date: 2005-11-02
Anticipated expiration: 2025-04-28
Also published as: KR20060047496A; TWI327798B; CN1691420B; KR101107580B1; JP4368237B2; TW200608640A; JP2005317293A

Abstract

The objective is to provide an electric connector free from short-circuit between adjacent electrodes even a whisker is grown by the stress added at all time when holding FFC or FPC on which, lead-free plating is applied. Insulation parts 11 of an FFC, FPC base 3 and an extension separating walls 6 are made to closely contact with each other, and contacts 8 of respective terminals are constructed so as to exist in a space of which, all quarters are closed, by forming an extension separating wall 6, extending in such a direction that the separation wall 9 located between terminals 10 get near to a wall part 17 of a housing 1, so as to become slightly narrower than the thickness of an FFC, FPC base 3. By the above, a whisker 15 growing from the contact 8 is prevented from reaching adjacent contact beam 2 or the contact 8 by the extension separating wall 6, and the short-circuit is prevented.

Description

Electric connector

Technical field

The present invention relates to the electric connector of flexible flat cable (hereinafter referred to as FFC) or flexible printed circuit board (hereinafter referred to as FPC) usefulness.

Background technology

Fig. 7 is the front view that expression is inserted with traditional connector of FFC or FPC state, and Fig. 8 is the cutaway view along the C-C of Fig. 7.

This traditional electric connector has housing 1 and the contact stud (コ Application Network ト PVC-system) 2 of fixed supported terminal the terminal installing space that the direction from this joint face towards enclosure interior forms, housing 1 is provided with separates walls 9, and it does not intersect mutually, contacts with aforesaid contact stud 2.The 5th, the fixed part of terminal.

The height dimension of this separates walls 9 is configured to, and the wall portion 17 of terminal installing space between guarantee to have the big gap of thickness than the matrix 3 of FFC, FPC, between the inwall 17 of aforementioned contact stud 2 and aforementioned terminal installing space, can insert the matrix 3 of FFC or FPC, the aforementioned contact stud 2 of terminal and the conductive seat 4 of FFC or FPC can be electrically connected.This electric connector is on the books in Japanese patent laid-open 8-273772 communique etc.

In traditional electric connector, because of the height of separates walls 9 is low, so and the matrix 3 of FFC, FPC between produce space 14, can see the contact 8 of mutual adjacency.Therefore, must brilliant (ゥィスカ) 15 stretching the occasions that come in contact by space 14 mutually, existing and to cause problem of short-circuit between terminal from the contact 8 of adjacency.

For tackling current environmental problem, electric component is being used unleaded technology, and is well-known, and taking place easily when adopting low-cost and have versatility zinc-plated must be brilliant, can cause in abutting connection with the short circuit of terminal and paillon foil.Particularly resemble in the sort of device that stress arranged all the time of electric connector, be applied with on the contact of stress, can observe the obvious stretching, extension of the such palpus of length 100～200 μ m brilliant 15, the unleaded process that has hindered electric connector and FFC thereof, FPC electroplating surface.

For this reason, in the electric connector of traditional structure, for unleaded and adopt zinc-plated occasion, owing to must brilliantly stretch with contact 8 places of the matrix 3 of FFC, FPC at contact stud 2, stretch and come in contact towards the direction of the aforementioned interspace between the contact stud 2 of adjacency, so existence causes the electric loop problem of short-circuit.

Again,, also have on the surface of terminal and adopt the metal plating that the palpus crystalline substance does not take place,, exist the high problem of Costco Wholesale of electric connector in this occasion in order to prevent its short circuit.

In view of the above problems, the object of the invention is, must brilliantly produce the electric connector of short circuit between the contact plate that stretches, also can not cause adjacency even provide a kind of stress that has all the time when the FFC of unleaded plating such as zinc-plated and FPC are kept to make.

Summary of the invention

Electric connector of the present invention, on the elongated insulating properties housing of Width, be formed with the peristome of the matrix that can insert flexible flat cable (FFC) or flexible printed circuit board (FPC), have a plurality of terminals the terminal installing space that the direction that is installed in from described peristome towards described enclosure interior forms, the discontiguous separates walls of described terminal that between described terminal, has the adjacency of making, it is characterized in that described separates walls front end and the interval of described inner walls are set for littler than the thickness of the matrix of described FFC or FPC.When with FFC or FPC insertion, insulation division and stretch apart wall between the conductive seat that is positioned at FFC or FPC are close to, the conductive seat of each terminal and FFC or FPC is present in the inaccessible on every side space.

Adopt this form, by with the contact of contact stud and FFC, FPC as the center, on the direction of insertion of FFC, FPC, front and back have the stretch apart wall of being close to FFC, FPC insulation division more than the 200 μ m respectively, thereby must the brilliant advantage that stretches the contact stud short circuit that also can not cause adjacency from contact even have.

Promptly, when FFC, FPC are inserted electric connector, become the space inaccessible on every side owing to connect the conductive seat of FFC, FPC and the contact of terminal front end by being close to of matrix of stretch apart wall and FFC, FPC, this inaccessible space with contact as the center, on the direction of insertion of FFC, FPC, front and back have the separates walls of being close to more than the 200 μ m respectively, can not cause and the contact stud of adjacency or the effect of contact short circuit even have brilliantly to stretch from contact yet.Therefore, have that can use at low cost can unleaded zinc-plated advantage when the electroplating surface of terminal and FFC, FPC.

Again, electric connector of the present invention is characterized in that, the base end part of described separates walls is thick, and front end is thin, thereby even reduced the insulation division width between conductive seat of the matrix of FFC or FPC, also can not run into conductive seat, only is close to insulation division.

Adopt this form, when the injection molded of many separates walls of being made by ester moulding, the inflow of molten resin also is good, has the advantage that can not take place because of the shape imperfection of the bad separates walls that causes of inflow property.Again, because of front end is thin, even the little small-sized electric connector of the insulation division width between the conductive seat of FFC, FPC, also have can make reliably the stretch apart wall only with the effect of insulation division butt.

Again, electric connector of the present invention, it is characterized in that, described separates walls is shaped by the high raw material of the raw material of hardness ratio FFC or FPC at least, FFC, FPC are being inserted under the state of electric connector, the front end of stretch apart wall is entered in the insulation division of FFC, FPC, by making insulation division plastic deformation or strain, can make the close property of separates walls and insulation division more reliable.

Again, electric connector of the present invention, it is characterized in that, described separates walls is shaped by the low raw material of the raw material of hardness ratio FFC or FPC at least, FFC, FPC are being inserted under the state of electric connector, front end by the stretch apart wall is crushed, plastic deformation or strain, can make the close property of the insulation division of FFC, FPC and separates walls more reliable.

Like this, because the material of stretch apart wall is harder or soft than the material of the insulation division of FFC, FPC, therefore, FFC, FPC are being inserted under the state of electric connector, the front end of stretch apart wall is entered in the insulation division of FFC, FPC or stretch apart wall self produces strain, plastic deformation, even the size of stretch apart wall with the amount less than deflection deviation has taken place, also can keep and being close to of insulation division.

Again, electric connector of the present invention, it is characterized in that, described separates walls is formed by the insulating component different with described housing, it is preferential material that housing section is used with the original function of housing, and it is preferential material that separates walls is used the close property to have given with the difference of hardness of the insulation division of FFC, FPC.

The simple declaration of accompanying drawing

Fig. 1 is the front view of expression example 1 of the present invention.

Fig. 2 is the cutaway view along the A-A line of Fig. 1.

Fig. 3 is the stereoscopic figure of expression FFC or FPC.

Fig. 4 is the front view that is inserted with the FFC state in the same example of expression.

Fig. 5 is the cutaway view along the B-B line of Fig. 4.

Fig. 6 is the front view of state behind the insertion FFC that represents in the example 2 of the present invention.

Fig. 7 is illustrated in traditional electric connector the front view that inserts state behind the FFC.

Fig. 8 is the cutaway view along the C-C line of Fig. 7.

Embodiment

Below with reference to Fig. 1～Fig. 6 each example of the present invention is described.

(example 1)

Fig. 1 and Fig. 2 represent the electric connector of example 1 of the present invention.

Fig. 1 is a front view, and Fig. 2 is the cutaway view along the A-A line of Fig. 1.

This electric connector is made of by the insulating properties housing 1 of the elongated cuboid piece of Width and a plurality of terminals 10 that are installed in respectively on the housing 1 with fixed part 5 ester moulding.Terminal 10 has junction surface 13, and modes such as the no lead solder of employing engage with circuit substrate (not shown).

Housing 1 is that the ester moulding with insulating properties is that box constitutes, form interior void 18 by separates walls 9 above, this separates walls 9 makes to be separated into as the peristome 16 of connecting hole and the wall portion 17 that extends inward from this and adjacent terminal 10 does not intersect and the form of butt mutually, terminal 10 has contact stud 2, this contact stud 2 has curvature near peristome 16, bend to roughly 180 degree, has elasticity, utilize this elasticity, and contact 8 is configured to form with wall portion 17 butts.

Described terminal 10 is mainly formed by the rubber-like copper alloy, in order to have the compatibility with soldering, gets rusty or at unleaded environmental problem, has implemented zinc-plated to its surface preventing.

The separates walls 9 integrally formed with housing 1 has stretch apart wall 6, and the cardinal extremity of this stretch apart wall 6 is thicker than front end, and thickness extends and attenuation section shape triangular in shape to the central authorities of interior void 18 gradually.

The leading section 7 of stretch apart wall 6 and described wall portion 17 are slightly less than the thickness t 1 of matrix 3 of FFC, the FPC of Fig. 3 apart from t.

FFC in the insertion electric connector of this structure or FPC are as shown in Figure 3, be as raw material with the polyimides of insulative resin, polyethylene terephthalate ester, vinyl acetate etc., evenly extending on the matrix 3 that thickness is t1, on the surface that forms by Copper Foil or sheet copper, fixing through the conductive seat 4 of zinc-plated unleaded specification and make.

That Fig. 4 represents to see from the front, as the electric connector of this structure, to insert described FFC, FPC state.Fig. 5 is the cutaway view along the B-B line of Fig. 4.

From the peristome 16 of housing 1 12 direction is inserted towards the bottom surface FFC, FPC matrix 3, when inserting, pushed down by the pressing force of rubber-like contact stud 2, conductive seat 4 butts that on contact 8 places and FFC, FPC matrix 3, form, and, on one side and the wall portion 17 of housing 1 between bearing predetermined pressure, make on one side interior void 18 towards the bottom surface 12 direction advance, near the assigned position bottom surface 12, stop insertion.

Contact 8 is used to prevent that FFC, FPC matrix 3 from deviating from from electric connector, realizes electrically conducting with circuit substrate by conductive seat 4.

Equally, when inserting, stretch apart wall 6 with housing 1 one of making by the material harder than FFC, FPC matrix 3, insulation division 11 butts with FFC, FPC, and, while making FFC, 3 plastic deformations of FPC matrix or strain, inserting, after FFC, FPC matrix 3 arrive the afore mentioned rules position, also stretch apart wall 6 is maintained in the form that is entered in FFC, the FPC matrix 3.

Like this, as shown in Figure 4, the insulation division 11 of FFC, FPC matrix 3 is heaved, and stretch apart wall 6 is covered, to guarantee close property.In the cutaway view of Fig. 5, the driving fit of stretch apart wall 6 and FFC, FPC matrix 3 is to be the center with contact 8, on the direction of insertion of FFC, FPC, keep more than the 0.2mm front and back, therefore, contact 8 has constituted the state that wall surrounded that the four directions beyond the direction of advance of FFC, FPC is formed by insulative resin.Like this, (=0.2mm) occasion also can prevent the short circuit between the terminal of adjacency even must brilliant 15 be extended into maximum 200 μ m on being considered to observe from contact 8 in the past.

In addition, why the section with described stretch apart wall 6 makes triangular shape, its reason is the matrix 3 that not only enters FFC, FPC easily, and can realize the miniaturization and the slimming of housing 1, thereby reduce the interval of 10 of terminals, in this electric connector, even reduce the width of the insulation division 11 of FFC, FPC, stretch apart wall 6 can not run into conductive seat 4 yet, only is close to insulation division 11 easily.Again, why the section with this stretch apart wall 6 makes triangular shape, and its reason is that front end 7 thinner wall section at the stretch apart wall of being made by the method for ester moulding also flow into molten resin easily, the incomplete phenomenon of shape can not occur.

(example 2)

Fig. 6 represents the electric connector of example 2 of the present invention, and the part mark prosign identical with example 1 describes.

This example 2 is with the dissimilarity of example 1, is to be made by the material softer than FFC, FPC matrix 3 with the material of the integrally formed stretch apart wall 6 of housing 1.

Adopt this structure, when FFC, FPC are inserted electric connector, because surface according to FFC, FPC matrix 3, make leading section 7 strains or the plastic deformation of soft stretch apart wall 6, and be close to, so after FFC, FPC insert end, be the center with contact 8 with the insulation division 11 of FFC, FPC matrix 3, being close to more than the 0.2mm kept in front and back in the direction of insertion of FFC, FPC, and the wall that the four directions beyond the FFC of contact 8, the direction of advance of FPC is formed by insulative resin surrounds.

Like this, the same with example 1, can obtain to prevent must brilliant 15 caused effects in abutting connection with the mutual short circuit of terminal because of what stretch from contact 8.

Make triangular shape by section, can make front end 7 easy deformation of stretch apart wall 6 during with matrix 3 butts of FFC, FPC stretch apart wall 6.

In each above-mentioned example, stretch apart wall 6 forms one with housing 1, but a plurality of terminals 10 as housing 1 are kept and keep and the occasion of the original function of the electric property conducting of the conductive seat 4 of FFC, FPC paying attention to, can consider that also stretch apart wall 6 is not an one, but by the method that engages of structure manufacture independently separately.Promptly, housing 1 is made by the known original materials with function of electric connector that is suitable for, stretch apart wall 6 uses than harder insulative resin of FFC, FPC matrix 3 or softer insulative resin, thus, can be under the situation that does not change the electric connector performance, preventing must brilliant 15 caused short circuit in abutting connection with terminal.

Adopt electric connector of the present invention, even the palpus crystalline substance stretches from the contact of the conductive seat of terminal and FFC or FPC, also have the terminal that can not cause adjacency or the effect of contact short circuit, thus, when the electroplating surface of terminal and FFC, FPC, can use zinc-platedly cheaply, help promoting the unleaded of industrial circle.

Claims

1. electric connector, on the housing (1) of the elongated insulating properties of Width, be formed with the peristome (16) of the matrix (3) that can insert FFC or FPC, have a plurality of terminals (10) the terminal installing space (18) that the direction that is installed in from described peristome (16) towards described enclosure interior forms, between described terminal, have the discontiguous separates walls of described terminal (10) (9) of the adjacency of making, it is characterized in that

The interval (t) of described separates walls front end (7) and described inner walls (17) is set for littler than the thickness (t1) of the matrix (3) of described FFC or FPC.

2. electric connector as claimed in claim 1, it is characterized in that, the base end part of described separates walls (9) is thick, front end is thin, even reduced FFC or FPC matrix (3) be positioned at insulation division (11) width between the conductive seat (4), can not run into conductive seat (4) yet, only be close to insulation division (11).

3. electric connector as claimed in claim 1 or 2 is characterized in that, described separates walls (9) is shaped by the high raw material of the raw material of hardness ratio FFC or FPC at least.

4. electric connector as claimed in claim 1 or 2 is characterized in that, described separates walls (9) is shaped by the low raw material of the raw material of hardness ratio FFC or FPC at least.

5. electric connector as claimed in claim 1 or 2 is characterized in that, described separates walls (9) is formed by the insulating component different with described housing (1).