JPH0740304Y2 - Contact holding device for electrical connector - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial application] The present invention relates to a device for holding the contacts of an electrical connector, in particular a receptacle type connector, in a contact receiving cavity of an insulating housing.

[Prior art and its problems]

In a typical receptacle connector, contacts are inserted into a plurality of contact receiving cavities formed in an insulating housing from behind a mating surface. The contact thus inserted is stably fixed in the cavity by a lance formed in the contact itself or a housing lance formed in each cavity of the housing. That is, the contact is prevented from being removed in the direction opposite to the insertion direction of the contact.

An example of an electrical connector that uses a housing lance will be described in some detail. FIG. 3 is a sectional view of an essential part showing an example of a conventional electric connector disclosed in Japanese Utility Model Laid-Open No. 1-64872. FIG. 3 (B) is an electric connector housing body.
A part of 10 is shown, and FIG.
2 shows a part of the double lock member 15 inserted from the front (fitting) surface of FIG. The housing body 10 has a plurality of contact receiving cavities, one cavity 11 of which is shown. The contact receiving cavity 11 has a substantially rectangular shape, and the receptacle type connector 12 is inserted therein, and the elastic housing lance 13 formed on the upper bottom surface engages with the shoulder portion of the contact 12 so that the contact is pulled out to the right. Hold it like not. A space 14 is formed between the housing lance 13 and the upper wall of the cavity 11.

A double lock member 15 shown in FIG. 3B is mounted on the front surface of the connector housing body 10. This double lock member
15 is a contact receiving cavity 11 of the connector housing body 10
Is a plate-like body 17 having the same number of protrusions 16 as each other, and when mounted, each protrusion 16 is inserted into the space 14 above the contact receiving cavity 11 and presses the housing lance 13 toward the contact 12 side, so that the contact 12 is It can be held securely in the cavity 11. The plate-like body 17 of the double lock member 15 has a tapered opening 18 at a position corresponding to the front end of the contact 12.
Another tab (male) type contact (plug type contact) is inserted from this opening 18. By mounting the double lock member 15 on the connector housing body 10, the receptacle connector is completed.

However, in such a conventional electrical connector the contact 12 is only held by the housing lance 13 at one place on the shoulder. Therefore, particularly in the case of the multi-pole structure, there is a drawback that each contact is not sufficiently stably retained in the cavity 11 of the housing 10. Therefore, it is an object of the present invention to provide a contact holding device for an electrical connector, which is capable of securely fixing each contact at a predetermined position in the cavity 11 even if it is small and has a multi-pole (high density) structure.

[Means and Actions for Solving Problems]

According to the contact holding device for an electric connector of the present invention,
The housing lance engages with a shoulder portion located away from the front end of the contact, and the double lock member for pressing the housing lance against the contact is integrally formed with a holding means for pressing the contact against the bottom surface of the cavity.

With such a configuration, the double lock member not only engages the housing lance with the shoulder of the contact but also presses the front end of the contact against the bottom surface of the contact receiving cavity so that each contact is in a vertical relationship to the cavity bottom surface. Can be held.

〔Example〕

Hereinafter, the present invention will be described in detail based on embodiments. FIG. 1 is a sectional view of the essential parts of a preferred embodiment of a contact holding device for an electrical connector according to the present invention. 1 (A) is a part of the connector housing body (insulating housing 20), FIG. 1 (B) is a sectional view of the double lock member 30 inserted in the front surface of the connector housing body 20, and FIG. 1 (C) is the same. It is sectional drawing which shows the state which combined and integrated the housing main body 20 and double lock member 30 of FIG.

First, referring to FIG. 1A, the housing body 20 has a plurality of contact receiving cavities, one of which is a cavity 21.
Is illustrated. When viewed from the front (left) end, this cavity 21 has a substantially rectangular shape as shown in FIG. 2 (A), and a ridge 26 extending inward from both left and right side walls thereof is formed. A receptacle-type contact 22, a part of which is indicated by a broken line, is inserted in the lower portion of the cavity 21. The ridge 26 has the function of preventing the guide (guide member) from rising up at the front end of the contact 22 having a substantially rectangular cross section to be inserted. The housing lance 24 projects downward from the upper wall surface of the cavity 21 with a gap 25, and engages with the shoulder portion 23 of the contact 22 when the contact 22 is inserted.

On the other hand, the double lock member 30 includes a rod-shaped portion 32 which is inserted from the front plate-shaped portion 31 into a gap 25 between the contact receiving cavity 21 of the housing body 20 and the housing lance 24, and a contact 22 which is shorter and extends below the rod-shaped portion 32. The holding member includes a pressing member 33 that presses the front end upper wall portion of the.

With the above structure, when the double lock member 30 is mounted after inserting the contact 22 into the contact receiving cavity 21 of the housing body 20, the housing lance 24 engages with the shoulder 23 of the contact 22 and the pressing member 33 projects. It is inserted between 26 and presses the upper wall of the contact 22. This causes the bottom surface of the contact 22 to be the bottom surface of the contact receiving cavity 21.
The contact 22 is held in a predetermined state by being completely pressed against 21a. Of course, the plate-shaped portion 31 of the double lock member 30 has a tapered opening 34 at a position corresponding to the front end of the contact 22 so that a tab-type contact of a male connector can be inserted.

FIG. 2A shows a front view of each contact receiving cavity 21 of the connector housing body 20. In the figure, the contact 22 is indicated by a broken line. This contact 22 is a double lock member 30.
Since it is not pressed to a predetermined position by, it shows a state in which it is displaced with respect to the contact receiving cavity.

FIG. 2B is a perspective view showing details of the front end portion of one embodiment of the housing lance 24. As is apparent from the figure, the engaging portion has a central main taper surface 24a and relatively narrow contact surfaces 24b on both sides thereof. The contact surface 24b comes into contact with both shoulders of the contact 22 to enable more stable contact holding.

Although the above description is based on a preferred embodiment of the present invention, the present invention should not be limited to only such an embodiment, and various modifications can be made without departing from the gist of the present invention. It is clear that For example, the pressing member 33 of the double lock member 30 may be provided with a slight taper, and may have a two-step or multi-step configuration according to the shape of the front end portion of the contact 22.

[Effect of device]

As is apparent from the above description, according to the contact holding device for an electrical connector of the present invention, the double locking member of the housing lance is provided with the double locking of the housing lance and the holding means for pressing the front end of the contact, so that it is a small contact. Can also be securely held by abutting the bottom surface of the contact receiving cavity of the housing. Further, since the double lock member has the tapered opening, the double contact of the male connector can be guided and easily inserted into the receptacle type contact held at a predetermined position. Also, the ridge 26
Since the width of the housing lance 24 can be selected to be substantially the same as the width of the contact receiving cavity 21, a housing lance having sufficient strength and stability can be obtained. Therefore, the present invention is particularly suitable when applied to a receptacle electrical connector having a high density receptacle type contact.

BRIEF DESCRIPTION OF THE DRAWINGS FIGS. 1 (A) to 1 (C) are cross-sectional views of essential parts of a preferred embodiment of a contact holding device for an electric connector according to the present invention, and FIGS. 2 (A) and 2 (B) are respectively 1 is a detailed view of the contact receiving cavity and the housing lance of FIG. 1, and FIG. 3 is a sectional view of a conventional contact holding device for an electrical connector. 20 ... Insulating housing 21 ... Contact receiving cavity 22 ... Receptacle type contact 24 ... Housing lance 25 ... Gap 30 ... Double lock member 32 ... Rod part 33 ... Pressing member 34 ... Taper opening

Claims (1)

[Scope of utility model registration request] 1. An insulating housing having a housing lance for positioning a receptacle-type contact in a contact receiving cavity, the back surface of the housing lance having a gap opening toward a fitting surface, and the fitting surface from the fitting surface. An electrical connector comprising a double lock member inserted into a gap, wherein the double lock member includes a rod-shaped portion inserted into the gap, a pressing member for pressing a front end portion of the receptacle contact, and the pressing member. An electrical connector provided with a tapered opening which is formed by being aligned with the receptacle type contact held in a predetermined state and which guides and receives a mating plug contact.