JPH0327350Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Objective of the Invention] (Field of Industrial Application) The present invention relates to a contact tail positioning structure for a multi-pole electrical connector.

(Prior Art and its Problems) The recent progress in miniaturization of electronic components has significantly improved the component mounting density of, for example, printed wiring boards forming electronic devices, and has significantly increased the number of external connection terminals. Therefore, the receptacle connector, which is fixed to the printed wiring board by connecting the contact tail to the external connection terminal of the printed wiring board, and the plug connector connected to this are also required to be smaller and multipole, and the contact width and contact of each The distance between them must also be extremely small.

Therefore, in order to respond to the above-mentioned miniaturization and multipolarization,
For example, as shown in the perspective view shown in FIG. 1a, the number of contacts corresponding to the number of external connection terminals provided on one side of the printed wiring board is arranged in two rows a and b at the mating connector insertion port of the connector 1, and Each tail 2a of each contact 2 forming contact row a
Each contact 3 forming a contact row b between
The tails 3a are arranged and fixed in the insulating housing 4 so as to alternately enter the tails 3a at equal intervals.

In this case, in consideration of ease of manufacturing and connection to the printed wiring board, for example, as shown in the perspective view of FIG. The contact tail 2a is connected at a required interval by a connecting piece 5 having a feed hole 5a, and a contact chain 6 is connected to the feed hole 7a.
A contact series 8 is made which is connected in the same manner by a connecting piece 7 having a . After sending these to the plating device through the feed holes 5a and 7a and plating them continuously, the connecting piece is cut at the dotted line position in the figure so that it has the required number of contacts, and these are all assembled into the insulating housing 4 at once. It is made by inserting it into a fixed hole.

Further, as shown in the side view of FIG. 2, after the contact tails 2a and 3a are positioned at the external connection terminal 9a of the printed wiring board 9 and soldered, for example, the connecting pieces 5 and 7 are placed at the dotted line position in the figure. In a cutting manner, the rows of contact tails 2a and 3a
The connecting pieces 5 and 7 prevent the intervals between the rows from becoming out of order.

However, as described above, even though the connecting pieces 5 and 7 can maintain the distance between the contact tails 2a and 3a, there is no connection between the connecting pieces 5 and 7. Therefore, due to the gap between the contact tail of the insulating housing 4, the pull-out hole, and the tail, vibration shock and vibration may occur before soldering to the printed wiring board.
For example, due to vibration during transportation from the connector manufacturer to the user, the rows of tails 2a and the rows of tails 3a move independently, making the spacing between the contact tails uneven, and this uneven state also causes the connecting pieces 5, 7 It is held by the friction caused by the overlap of the two.

Therefore, when the tail is placed on the external connection terminal of the printed wiring board for soldering connection, the pitch will be different and will not match, so it is necessary to always pay attention to this point and perform troublesome correction. . Furthermore, if soldering is performed without noticing the misalignment, a defective connection may occur and the operation of the device may be hindered.

The present invention aims to provide a contact tail positioning structure that can eliminate the above-mentioned drawbacks.

[Structure of the idea]

(Summary of the invention) A guide hole for positioning the total number of contact tails is provided in a row in the longitudinal direction of each connecting piece of a plurality of contact series at the same pitch as the arrangement pitch of all the contact tails of each contact series. When the tails are arranged in a line, the positioning pins are inserted into the corresponding positioning guide holes without any play, thereby fixing each contact group, and the structure is such that positioning is achieved by inserting them into the insulating housing.

(Embodiment) Figures 3a, b, c, and d are a plan view and a cross-sectional perspective view of an embodiment of the present invention formed by two contact chains. Connecting pieces 5 and 7 of 6 and 8 are provided with positioning holes 10 and 11, that is, reference holes for positioning, with the lengths from the contact tails 2a and 3a constant, respectively, and at a pitch that is 1/2 of the arrangement pitch of the tails 2a and 3a. When all the contact tails of the superimposed contact series are arranged in a row at equal intervals, the guide holes 10 and 11 for positioning coincide with each other, for example, as shown in FIG.
By inserting a positioning pin 12 that fits without play as shown in d, the misalignment between the rows of contact tails 2a and 3a is eliminated.

4a, b, c, and d are plan views showing an embodiment in which the contact tail row is formed by three contact rows;
Each contact series 6, 8, 1 as shown in Figures a, b, and c.
By providing the positioning holes 10, 11, and 14 at a pitch of 1/3 of the arrangement pitch of the tails in No. 3, the purpose can be achieved as shown in Fig. 4 d. In short, the positioning holes may be provided so that the contact tail rows formed by the contact tails of each series are equally spaced.

(Effects) As described above, according to the present invention, the tail intervals of the contact tail row formed from a plurality of contact rows can be easily corrected and fixed at equal intervals. Therefore, it is possible to reduce the risk of misalignment between the tails during transportation, and it is possible to easily and reliably connect the printed wiring board to external connection terminals and the like. In addition, all the contact series that are overlapped in the present invention have the same shape and the same specifications. Therefore, it can be made by making a long strip-shaped contact chain, sending it continuously to a plating device, and cutting it into the required number of contact tails after plating.
An extremely large effect can be obtained in mass production of contact series.

[Brief explanation of drawings]

Figures 1 a, b and 2 are explanatory diagrams of multi-pole connectors, Figure 3 a, b, c, d, Figure 4 a, b,
c and d are structural explanatory diagrams of the present invention, respectively. 1... Connector, 2, 3... Contact, 2
a, 3a... Contact tail, 4... Insulating housing, 5, 7... Connection piece, 5a, 7a... Spread hole, 6, 8, 13... Contact chain, 9... Printed wiring board, 10, 11 , 14... Reference hole for positioning, 12... Positioning pin.

Claims (1)

[Claims for Utility Model Registration] One end is arranged in two rows in the mating connector insertion port of the insulating housing, and the contact tails of the other end are arranged parallel to each other at equal intervals. A multi-pole electrical connector in which a plurality of contact series connected by connecting pieces are arranged and fixed in an insulating housing by overlapping them so that all the contact tails are arranged in a row at equal intervals on almost the same plane, One of all the contact tails is arranged in a row in the longitudinal direction of the connecting piece of each superimposed contact chain.
Positioning reference holes for the total number of contact tails are provided at the same intervals as the row arrangement spacing, and positioning pins are inserted and fixed without play into the positioning reference holes that match when all the contact tails are arranged in a row at equal intervals. A contact tail positioning structure for a multi-pole electrical connector.