CN1043228A

CN1043228A - Electrical contact

Info

Publication number: CN1043228A
Application number: CN 89108858
Authority: CN
Inventors: 菊地正治; 尾上伸明
Original assignee: AMP Inc
Current assignee: TE Connectivity Corp
Priority date: 1988-11-30
Filing date: 1989-11-25
Publication date: 1990-06-20
Anticipated expiration: 2004-11-25
Also published as: DE68918704D1; DE68918704T2; JPH0276482U; EP0446220A1; WO1990006602A1; EP0446220B1; JPH0633660Y2; CN1026639C

Abstract

A kind of electrical connector comprises an insulation crust 30, has the electrical contact 10 that at least one chamber wall has the cavity 31 of an elasticity lance shape spare 34 and is arranged in cavity 31.Electrical contact comprises conductor compression jointing part 11 and the insulating covering crimping part 12 that is in its two ends, respectively in order to the core 20a and the insulated part 20b of crimped electric wire 20, there are fixture 14 and contact portion 13 in both sides between two crimping parts 11 and 12, the projection 15 that outside moulding is arranged in the fixture 14, so that, thereby contact 10 is remained in the cavity 31 with ledge 35 engagements of elasticity lance shape spare 34.

Description

Electrical contact

The present invention relates to a kind of electrical contact that electric connector is used, the particularly electrical contact made of drawing conductive metal sheet, an end of this electrical contact has a conductor compression jointing part, and the other end has an insulating covering crimping part.

An example of this contact is a receptacle contact.Receptacle contact, as disclosed in Japanese Utility Model patent gazette 4394/85 specification, it has a contact portion on one side, in order to be electrically connected with part between the insulating covering pressure contact portion divides in the conductor compression jointing part with the auxiliary aciculiform contact of amalgamation, have a fastener or lance shape spare in addition, in order to prevent contact slippage after inserting insulation crust.

This known its conductor compression jointing part of contact and the distance between the insulating covering pressure contact portion branch are enough big, thereby overcome the big inadequately shortcoming of length, promptly prevent scratch lead in the process of crimping lead possibility and prevent to electrically contact with wire conductor is unsuitable.So both simplify the operation of electrical wiring, also reduced to be used for fixing the height of the insulation crust of contact.

General fastener or lance shape spare are to make by the outside cutting forming of lateral edge that insulating covering crimping part side is that part of, can make fastener have elasticity like this.For the contact that will have this fastener remains in the insulation crust, contact can be inserted the cavity of insulation crust one end or upper, open end, and overcome the elastic force of elastic engagement pieces and push in the cavity along the inwall of cavity.Meanwhile, the stepped portion on cavity one sidewall has stoped inside thrust, thereby makes the end of fastener and stepped portion engagement, thereby provides lance shape spare for contact on the direction opposite with its direction of insertion.

But this fastener is outwards to be shaped by thin metalwork to make, thereby insufficient strength.When the bigger power of this external application lifted fastener in the other direction, fastener may crooked or distortion, thus make fastener frequent insert and when extracting insulation crust out (number of times that inserts and extract out increases) can rupture because of metal fatigue.In addition, because the gap that the formation of the lateral edge of fastener and contact is V-shaped haply, thereby such fastener tends to lead is blocked and scratch, and fastener may be out of shape, particularly be connected with thereon under the conductive wire scenario of a plurality of contacts, all the more so.If for avoiding these problems to adopt short fastener, then the elasticity of fastener can not make it suitably mesh with the stepped portion of fixing effectively.

Therefore, the objective of the invention is to overcome the above-mentioned shortcoming of general contact.For reaching this purpose, fastener is on the lateral edge by a member between the conductor compression jointing part of contact and insulating covering pressure contact portion divide an outside projection to be set to form.

Be formed with an elasticity lance shape spare in the insulation crust, in order to when contact inserts in the insulation crust, to mesh with the fastener of contact.

For achieving the above object, contact of the present invention is by making the conductive metal sheet drawing, and an end of contact has a conductor compression jointing part; The other end has an insulating covering crimping part; Side between two pressure contact portions divide has one to have the part that electrically contacts of auxiliary contact; Opposite side between two pressure contact portions divide has a fixture; And on this fixture, form a fastener, with so that contact be fixed in the insulation crust.

Fastener is by a lateral edges place of partly holding in the insulating covering crimping of fixture the part of fixture to be formed to outer lug.

In most preferred embodiment of the present invention, fastener is outwards to form towards side projection from the opposite side of fixture.

By the contact that forms with upper type is to insert in the cavity by the elastic force that overcomes as the elasticity lance shape spare of a cavity sidewalls part.Fastener inwardly is pressed into, slips over an end of shell lance shape spare then, till the engagement of it and lance shape spare.Like this, contact just is fixed on the direction opposite with its direction of insertion.It electrically contacts part and just is in status of electrically connecting with the auxiliary amalgamation contact that is fixed in the independent insulation crust.

Describe contact of the present invention with reference to the accompanying drawings by way of example in detail.

Fig. 1 is the perspective view that has been crimped onto an embodiment of the contact on the electric wire of the present invention;

Fig. 2 is the top view of Fig. 1;

Fig. 3 is the end view of Fig. 1;

Fig. 4 is along the view of the 4-4 line intercepting of Fig. 3, shows the fastener on fixture.

Fig. 5 is the perspective view of a connector, comprising fixing the insulation crust that is crimped onto the contact on the electric wire shown in Fig. 1 to 3;

Fig. 6 is the cutaway view that connector shown in Figure 5 cooperates with another connector, and the jack contact portion of previous connector is connected with the aciculiform contact portion of a back connector.

Among Fig. 1 to 4, receptacle contact 10 is to be made by conductive metal sheet with general punching formation.The contact 10 of Xing Chenging comprises that crimping part 11, crimping part 12, jack type electrically contact part 13 and fixture 14 in such a way.Connect wires 20 core 20a of crimping part 11 voltage supply; Connect wires 20 insulated part 20b of crimping part 12 voltage supply; Jack type electrically contacts part 13 in order to see Fig. 6 with the aciculiform contact portion 41(of the auxiliary amalgamation contact 40 that is about to after a while speak of) be electrically connected; Fixture 14 has fastener 15, in order to see Fig. 5 and 6 with the insulation crust 30(that is about to after a while speak of) engagement.

Core crimping part 11 comprises a pair of crimp 11a and 1b, and they extend to both sides at an end of contact 10.These two crimps all curve inwardly, so that crimping is placed in core 20a therebetween.Insulating covering crimping part 12 comprises a pair of

crimp

12a and 12b, and they extend to both sides at the other end of contact 10.These two crimps also curve inwardly, and are crimped onto on the insulating covering 20b between crimp 12a and the 12b.Contact portion 13 comprises pair of

contacts

13a and 13b and contact

13c.Contact

13a and 13b extend from the side between two crimping

parts

11 and 12, and are down up L shaped and crooked haply inwardly.Contact 13c extends from the side between two contact 13a and the 13b, and be down L shaped up and bend outwards.Fixture 14 extends from the opposite side between two crimping

parts

11 and 12, and roughly is down L shaped crooked up.Fastener 15 is projections, and it is that the outside warpage of a part facing to a lateral edge 14a of insulating covering crimping part 12 by fixture 14 forms.As shown in Figure 2, fastener 15 is outstanding and curved gradually to lateral edge 14a from edge, the another side 14b of fixture 14.Fastener 15 is also curved along lateral edge 14a, and its vertical section can be clear that from Fig. 4.Therefore fastener 15 mechanical strengths are very high, and can slide extremely smoothly along the inner wall surface of cavity pocket of outer cover.Fastener preferably is above-mentioned arc, but also not necessarily leaves no choice but curvedly, for example can be polygonal, as long as it is prominent to lateral edge 14a from edge, the another side 14b of fixture 14 gradually.

Referring now to Fig. 5 and 6,, can see that electric connector has a contact 10 to be fixed in the insulation crust 30.Shell 30 is made by appropriate insulation material molding, and has a plurality of cavitys 31 and a plurality of elasticity lance shape spare 34, and they all are made of opening portion 33a that forms on the sidewall 32 and notch 33b.Lance shape spare 34 has constituted a sidewall of each cavity.The thickness of lance shape spare 34 progressively increases to the bottom from the upper end of cavity 31, and at inner end a ledge 35 is arranged.Shell 30 also has a cavity 36 in a side of each cavity 31.

Contact 10 is to insert the cavity 31 from the upper end of shell 30, and at this moment fastener 15 slides along the inner surface of lance shape spare 34, and the elasticity that overcomes lance shape spare lance shape spare to extrapolation.When fastener 15 was crossed ledge 35, the elasticity of lance shape spare 34 made lance shape spare get back to original position, thereby fastener 15 is rested among the opening portion 33a.Even therefore contact 10 is up drawn, the engagement between fastener 15 and the lance shape spare 34 also can be fixed on contact 10 on this position.Be fixed with the electric connector of contact 10 in this cavity 31, can with insulation crust 50 in be fixed with another electric connector amalgamation of auxiliary contact 40.This splitting mode is to make the aciculiform contact portion 41 of auxiliary contact 40 and the box-shaped contact portion 13(that is made up of

contact

13a, 13b, 13c see Fig. 1 by the cavity shown in Fig. 6 36) be in electric contact state.

According to the contact of electric connector of the present invention, be formed with the part that engages of giving prominence to part in the conductor compression jointing part with a lateral edge place of insulating between the foreskin pressure contact portion branch. Outstanding joint spare is immobile with respect to the member that forms it, and therefore when it is fixed in the cavity of insulation shell, its intensity is enough to make it pulling out the Shi Buhui distortion or rupture to insert the opposite direction of contact. Contact of the present invention has solved all problems that relates to above-mentioned general contact.

In addition, joint spare of the present invention only is that a part that will form its member forms from its inboard outwards compacting, does not need to produce this kind joint spare with other material, thereby has both shortened the total length of contact, makes again the manufacturing cost of this kind contact lower.

Claims

1, a kind of electrical contact in order to being electrically connected with insulated electric conductor, and is used for fixing in a cavity of insulation crust, and this electrical contact comprises: a conductor compression jointing part is positioned at an end of contact; One insulating covering crimping part is positioned at the other end of contact; One electrically contacts part, and the side between two pressure contact portions divide can be electrically connected with an auxiliary contact; One member, the opposite side between two pressure contact portions divide; An and fastener, be positioned on the described member, mesh in order to a part, so that contact is remained in the cavity of shell with cavity wall, this contact is characterised in that, described fastener be as a lateral edge of described member to the projection of outer lug and in described member, form.

2, electrical contact as claimed in claim 1 is characterized in that, described fastener is curved.

3, electrical contact as claimed in claim 1 is characterized in that, described fastener is to form to the described lateral edge projection of member gradually from the edge, another side of described member.

4, a kind of electric connector comprises the insulation crust with at least one cavity, and insulation crust also comprises a wall, and this wall has the bonding part at cavity inside; And comprise that an electrical contact that can insert in the cavity, electrical contact comprise conductor compression jointing part and the insulating covering crimping part that is positioned at the contact two ends, respectively in order to the core and the insulating covering of crimped electric wire; Also comprise a fixture,, contact is remained in the cavity in order to when contact inserts in the cavity, to mesh with the bonding part; And comprise a contact portion, in order to electrically contact with an auxiliary contact; Described fixture and the described contact portion both sides between two pressure contact portions divide, described electric connector is characterised in that in a lateral edge of described fixture, a fastener to the projection form of outer lug is arranged, in order to mesh with the bonding part.

5, electric connector as claimed in claim 4 is characterized in that, described fastener is curved.

6, electric connector as claimed in claim 4 is characterized in that, described fastener is to form to the described lateral edge projection of fixture gradually from the edge, another side of described fixture.

7, electric connector as claimed in claim 4 is characterized in that, described bonding part is the form of elasticity lance shape spare, and its inner end has a jut, meshes in order to the fastener (15) with described fixture.