JPS6142887A - Electric connector - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] (Field of Industrial Application) Is the present invention applicable to printed circuit boards? This invention relates to an electrical connector used to connect a U-type terminal or the like to a corresponding wire terminal.

(Prior Art) As an example of a connector used to connect electrical terminals of a printed circuit board or the like to the outside, a plurality of plate contacts 51 bent at approximately right angles are placed inside a housing 50 as shown in FIG.
There is a connector made by attaching 52. This connector is
A pair of contacts 51 and 52 are arranged in multiple rows horizontally,
The lower ends 51a and 52a of the contacts 51 and 52 protrude downward, and these protrusions 51a and 52a are inserted into, for example, a fitting hole provided on the printed circuit board 57 and come into contact with an electrical terminal on the printed circuit board 57. ing.

On the other hand, the other ends of the contacts 51 and 52 are bent at right angles within the housing 5o and protrude into a plurality of insertion portions formed on the opposite surface 5G to form connection portions, and wire harnesses, etc. It is designed to be connected to a terminal.

In this case, the plurality of protrusions 51a and 52a need to be inserted into the plurality of fitting holes on the printed circuit board 57 at the same time, and the pitch and position between each of the protrusions 51a and 52a are required to be accurate. . For this purpose, an alignment plate 53 having positioning holes 54 and 55 aligned with the true positions 1 of each of the protrusions 51a and 52a is attached to the lower surface of the housing.
, 52a are positioned from the rear. In this way, accurate positioning of the protrusions is possible, but there is a problem in that the alignment plate 53 needs to be made separately, and the need for this plate assembly process increases manufacturing costs.

(Object of the Invention) In view of the above-mentioned problems, an object of the present invention is to provide an electrical connector in which the true position of the protrusion can be accurately determined without using a contact positioning plate. It is something.

(Towards the Invention) The electrical connector of the present invention has a plurality of metal plate-shaped contacts bent at approximately right angles installed in a housing, and one end of these contacts is formed in the housing to receive a mating terminal such as a harness. The distal end portion is made to protrude into the plurality of insertion portions to form a connection portion for connection with the mating terminal, and the other end is extended at right angles to the mounting surface of the housing that is substantially perpendicular to the fitting surface having the insertion portions. is formed with a column that protrudes outward from the mounting surface, and is integrated with the housing and extends parallel to the mounting surface in the vicinity of the mounting surface, and has a plurality of U-shaped openings on the back surface of the mating surface. A column holding plate with a groove is provided, and a protrusion facing inward is provided in this U-shaped groove. Bend it to the opposite side to form a Uminato cross-section section on the right side of the U-shaped cross section that opens to the opposite side, insert this U-shaped cross section into the U-shaped groove, and insert both ends of the U7 cross-section section into the U-shaped groove. letter fM
This feature is characterized in that the protrusion formed by the column protruding outward from the mounting surface is positioned by being engaged with the inner protrusion.

(Example) Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a perspective view showing one example of the electrical connector according to the present invention, and FIG. 2 is a diagram showing the electrical connector cut along the vertical plane indicated by arrow A-A in FIG. This will be explained using the following.

, this connector is made up of a plurality of rows of pairs of contacts 20 and 30 of two sizes arranged in a housing 10, and the lower surface of the housing 10 is a mounting surface 11 that faces a printed wiring board, etc. The surface that is substantially perpendicular to 17 and faces the back side in FIG. 1 is the fitting surface 11. The same number of recesses as the contacts 20 and 30 are formed in the m-base surface 11, and these recesses serve as insertion portions 12 for receiving terminals of a mating harness, etc.
a, 12b.

Contacts 20.3 are provided in the insertion portions 12a and 12b.
0 end 21.31 is the insertion hole 12a in the housing,
13a, one end of which is connected to the connecting part 21.3.
1, and is connected to a mating terminal inserted into the insertion portions 12a and 12b. Stabilizers 24.34 are formed in the portions of the contacts 20.30 located within the insertion holes 12a, 13a, and the stabilizers 24.34 fix the contacts 20.30 to the housing 10 without play.

The insertion holes 12a, 13a open from the fitting surface 11 to the back surface 14 of this fitting surface, and the contacts 20, 30 protruding toward the back surface 14 are bent at approximately right angles and projecting outward from the mounting surface. The pillar portions 20a and 30a are formed. Of the pillar parts 20a and 30a, the protruding parts 23 and 33 that protrude downward from the mounting surface have a flat plate shape with a pointed tip, but the part located inside the housing 10 has both ends bent toward the back surface 14, and the cross section is A U7 cross-sectional portion 22.32 is formed that is U-shaped and opens toward the back surface 14 side.

In the vicinity of the mounting surface 17, a column holding plate 15 parallel to the mounting surface 17 is integrally formed with the housing 10, and the column holding plate 15 has a number of pairs of contacts 20° and 30 large and small. The same number of O-shaped grooves 16 opening on the back surface 11 are formed, and within each O-shaped groove 16, two sets of protrusions IGa, 16a and 161) and IGb facing inward are formed. Therefore, both ends of the U7 cross section 22.32 pushed into the 0-shaped groove 16 are protrusions 16a, 1
6a, 16b, and 16b for positioning, so that the protrusion 23.33 can be accurately positioned.

Next, a mechanism for holding the U-shaped cross sections 32, 33 within the U-shape @16 will be explained with reference to FIGS. 3 and 4.

FIG. 3 shows the column holding plate 15 cut along a vertical plane passing through the center of the O-shaped groove 1G, and is a perspective view showing the column 20'a of the contact 20 inserted into the O-shaped groove 16. FIG. 4 is a plan sectional view showing the column holding plate 15 cut along a horizontal plane, and this figure shows a state in which the U7 cross section 22 is inserted into the O-shaped groove 1G.

The U-shaped v116 is a groove with a width Wz, and a pair of inwardly protruding protrusions IGa, 16a are arranged in this groove to face each other. Note that these protrusions 16a, 16a are the contacts 2
0, but the protrusions 16a, 16a and the same shape as the protrusions 16b, 16b for the collect tact 30.
(not shown) is also formed at a position close to the back surface 14 side. The width between the protrusions 16a and 16a is Wt, and Wt<
It is Wz.

On the other hand, the U7 cross section 22 of the column 20a inserted into the J-shaped groove 16 has a width of W3, which satisfies Wt < W3 < Wz. Therefore, the U7 cross section 22 is inserted into the U-shaped groove When pushed in, the U7 cross section 22 is a bent metal plate, so due to its elasticity it passes between the protrusions 113a and 16a by being pushed from both sides, and returns to its original width W3 within the groove.
Return to When the insertion force is removed after the contact 20 has passed between the protrusions 16a and entered the depths of the groove, the column portion 20a of the contact 20 returns to the rear surface 14 side around the almost right-angled portion of the upper end due to its elasticity. A springback force (F) that tends to loosen acts.

Therefore, as shown in FIG. 4, a springback force (F) is applied to the U7 cross section 22 to the right in the figure, but the W3
> Wt, both ends of U7 cross section 22 have protrusions 16
a, 16a and is held in that position.

Therefore, positioning is performed in the left-right direction (Y-direction in FIG. 4). On the other hand, the protrusion 1 that both ends of the U7 cross section 22 come into contact with
6a, 16a are diagonally outward force FL as shown in the figure;
Fz is received, but of this force Ft, F2, the vertical direction (
By balancing the component forces in the Y direction), the U7 cross section 22 is positioned at the center of the groove, and is also positioned in the Y direction.

In this way, the protrusion 16a is provided within the 0-shaped groove 16.

16a to the pillar portion 20a of the contact 20.30,
30a can be accurately positioned.

Note that, as shown in FIG. 6, the U-shaped groove is shaped to match the cross-sectional shape of the U-shaped cross-sectional portion to form the protrusion 16a.

16a and the rear end portions 16c, 16c are also used to position the U7 cross section 22,
In this case, since there is a four-point contact, there are problems such as a strict dimension of 11 degrees and tight assembly tolerances, and this has fewer advantages than the present invention.

(Effects of the Invention) As explained above, according to the present invention, a column holding plate having a plurality of U-shaped grooves parallel to the mounting surface is provided near the mounting surface integrally with the housing, and the U-shaped A protrusion is provided in the U-shaped groove, and a U-shaped cross section that forms the column of the contact is inserted into this U-shaped groove, and both ends of this U7 surface part generate a springback force that acts around the bent part of the contact. Since the contactor 1- is engaged with the protrusion, the protrusion of the contact 1- can be accurately positioned without using an alignment plate or the like, and the connector can be easily assembled.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing an example of the electrical connector of the present invention, FIG. 2 is a sectional view of the electrical connector taken along the arrow s-A in FIG. 1, and FIG. 3 is a perspective view of an electrical connector of the present invention. FIG. 4 is a perspective view of a cross-section of the column holding plate along a vertical plane passing through the center of the 0-shaped groove and showing the column of the contact inserted into this groove. FIG. 4 shows an electrical connector according to the present invention passing through the column holding plate. FIG. 6 is a partial cross-sectional view taken along a horizontal plane; the fifth factor is a perspective view showing a conventional electrical connector; and FIG. 6 is a cross-sectional view showing a conventional method of fixing a column. 10・・・・・・・・・Housing 11...
...Mating surfaces 12a, 12b...Insertion
Entry part 14... From... Blue side 15...
......Column retaining plate 1B...
・0-shaped groove 17...Mounting surface
20.30...Contacts 20a, 30a--Column portion 22.32-U interrupted surface portions 23, 33...
・Protruding part Fig. 1 Fig. 2 Fig. 4 Cyst 1 Y

Claims (1)

[Claims] A housing comprising a mounting surface, a mating surface perpendicular to the mounting surface, and a plurality of insertion portions formed on the mating surface for receiving mating terminals; It is bent and installed, and one end extends substantially perpendicularly to the fitting surface to form a connecting part that protrudes into the insertion part and connects to the mating terminal received in the insertion part, and the other end extends to the mounting surface. In an electrical connector comprising a plurality of metal plate-shaped contacts each forming a column extending substantially perpendicularly to the mounting surface and having a tip portion protruding outward from the mounting surface, A pillar holding plate having a plurality of U-shaped grooves extending and opening at the rear surface of the fitting surface is provided integrally with the housing, and a protrusion facing inward is provided in the U-shaped groove, bending both sides of a portion of the column located inside the housing in a direction opposite to the fitting surface to form a U-shaped cross section having a U-shaped cross section opening on the opposite side; is inserted into the U-shaped groove, and both ends of the U-shaped cross section are engaged with protrusions in the U-shaped groove, so that the column protrudes outward from the mounting surface. An electrical connector characterized in that the position of the parts is determined.