JP3074498U - connector - Google Patents

Abstract

(57) [Summary] [Purpose] To increase the mounting density of connectors on a board. [Constitution] Insulator supporting contact group,
A pair of fixing brackets or (and) posture stabilizing legs are protruded, and the positions of the pair of fixing brackets or (and) posture stabilizing legs protruding from the insulator are adjacent to and aligned with connectors of the same specification. Connectors differing from each other so that mating fasteners and / or posture-stabilizing legs do not contact each other.

Description

[Detailed description of the invention]

[0001]

【Technical field】

 The present invention relates to a connector aligned and fixed on a substrate.

[0002]

[Prior art and its problems]

 As a connector fixed on a substrate, a type provided with a fixing metal which is soldered to a dummy pad on the substrate regardless of a receptacle connector or a plug connector is known. Conventionally, this fixing bracket has been formed to project symmetrically with respect to the longitudinal center line of an insulator holding a large number of contacts in an aligned state.

For this reason, in a mounting mode in which connectors of the same specification are aligned and arranged, the mounting interval must be determined so that the fixing brackets of adjacent connectors do not come into contact with each other, which hinders an increase in mounting density. Had become. As the number of connectors of the same specification arranged on the board increases, the decrease in the mounting density becomes a serious problem.

Further, as another type, instead of the fixing bracket, a connector in which the posture stabilizing legs protrude symmetrically with respect to the longitudinal center line of the insulator holding a large number of contacts in an aligned state, A type in which a fixing bracket is further provided at the tip is known, but has exactly the same problem.

[0005]

[Purpose of the invention]

 The present invention is based on the above awareness of the problem with connectors with fixing brackets, and it is necessary to increase the mounting density so that the fixing brackets and / or posture stabilizing feet do not cause a decrease in the mounting density on the board. It is an object of the present invention to obtain a connector which can be used.

[0006]

[Outline of the invention]

 According to the present invention, if the position of the fixing bracket or (and / or the posture stabilizing leg) conventionally formed symmetrically with respect to the longitudinal center line of the insulator is shifted, the adjacent fixing bracket or the adjacent connector of the same specification in the aligned state. This is based on the idea that (and) the posture-stabilizing legs do not interfere with each other, and that the mounting density of connectors can be increased.

That is, in the embodiment applied to the connector having the fixing bracket, the present invention is soldered to the dummy pad on the substrate by protruding the insulator supporting the contact group on both sides in the longitudinal direction. In a connector provided with at least a pair of fixing brackets, the protruding positions of the pair of fixing brackets from the insulator are so set that adjacent fixing brackets of connectors of the same specification arranged adjacently do not contact each other. It is characterized by being different.

Further, in the aspect in which the present invention is applied to a connector having a posture-stabilizing leg, at least one pair of posture-stabilizing legs contacting with a substrate are projected on both sides in a longitudinal direction of an insulator supporting a contact group. In the connector provided with, the projecting positions of the pair of posture-stabilizing legs from the insulator were made different from each other so that the adjacent posture-stabilizing legs of the connectors of the same specification aligned adjacently did not touch each other. Features.

In a connector of a vertical board type, the fixing bracket or the posture stabilizing leg generally has two pairs on both sides in the longitudinal direction of the insulator. In a connector where the aligned contacts protrude from both sides in the longitudinal direction of the insulator and are surface-mounted on the board by reflow soldering, the fixing brackets or posture stabilizing legs are the contact groups of adjacent connectors of the same specifications. Provide a position where it does not interfere with the surface mount part.

[0010] In the aspect including the posture stabilizing legs, it is preferable that a positioning projection that fits into a positioning hole formed on the substrate is formed on a lower surface of at least one posture stabilizing leg.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS In the illustrated embodiment, the present invention is applied to a DIMM (Dual Inline Memory Module) connector, and FIGS. 1 to 3 show a first embodiment thereof. A plate-like DIMM 10 (FIG. 3) having a built-in memory has fixing recesses 11 on both sides thereof, and a large number of lands (terminals) 12 electrically connected to the memory are arranged on the front and back of the insertion end. Is formed.

The insulator 20 made of a synthetic resin has an elongated shape having a substantially rectangular shape in a plane, and has an insertion / removal groove 21 of the DIMM 10 on a center line 20 C in the longitudinal direction. A lock arm 23 having a lock projection 22 (FIG. 3) which engages with and disengages from the fixing recess 11 of the DIMM 10 is formed at both ends in the longitudinal direction of the insertion / removal groove 21. The lock arm 23 has a guide groove 24 (FIG. 1) of the DIMM 10. When the DIMM 10 is inserted into the guide groove 24, the lock arm 23 elastically deforms to allow the DIMM 10 to be inserted into the insertion / removal groove 21. When the lock arm 23 is opened by applying an operating force, the DIMM 10 can be pulled out of the insertion / removal groove 21. Although the shape of the insulator 20 in FIGS. 1 and 3 is slightly different, the basic function is the same.

A large number of contacts 25 corresponding to the lands 12 of the DIMM 10 are aligned and held in the insertion / removal groove 21. Each contact 25 has a contact leg 25a (FIG. 1) that contacts the land 12 of the DIMM 10 and a soldering leg 25b that faces the substrate 30, respectively, facing both sides of the inner surface of the insertion groove 21. The attachment legs 25b protrude from both sides of the insulator 20 in the longitudinal direction, and are surface-mounted on the signal lands 31 (FIG. 3) on the substrate 30 by reflow soldering.

The insulator 20 includes a pair of fixtures (dummy contacts) 28A and 28B. One end of each of the fixing brackets 28A and 28B is a soldered portion along the substrate 30, and the other end is fixed, for example, by press-fitting into the insulator 20. The pair of fixing brackets 28A and 28B are asymmetric with respect to the center line 20C of the insulator 20 (they do not protrude symmetrically), and are adjacent to the insulator 20 (connector) of the same specification arranged adjacently. The protruding positions are different so that the fixing brackets 28A and 28B do not contact each other (see FIGS. 2 and 3). The fixing brackets 28A and 28B are provided at positions where they do not interfere with the surface mount portions of the contacts 25 of adjacent connectors of the same specification.

The soldering portions of the fixing fittings 28A and 28B are reflow soldered to the dummy pads 32 (FIG. 3) formed on the substrate 30 corresponding to the positions of the fixing fittings 28A and 28B. The insulator 20 is fixed on the substrate 30 by soldering the solder leg 25b of the contact 25 to the signal land 31 and soldering the fixing brackets 28A and 28B to the dummy pad 32.

According to the present connector having the above configuration, when the insulators 20 (connectors) having the same specifications are arranged on the substrate 30, the pair of fixing metal fittings 28 A and 28 B project between the adjacent insulators 20. Are different from each other, the installation interval d of the insulator 20 can be reduced. This effect is apparent from comparison with the conventional structure in which the fixing brackets 28A and 28B are symmetrically protruded with respect to the longitudinal center line 20C of the insulator 20.

In the illustrated embodiment, two pairs of fixing brackets 28A and 28B are formed on both sides of the center line 20C of the insulator 20. However, when only one pair of fixing brackets 28A and 28B is used, and when three or more pairs are used, The present invention can be similarly applied.

FIGS. 4 and 5 show another embodiment of the present invention. FIG. 4 shows a state in which the posture stabilizing leg 20L is integrally protruded from the insulator 20 in accordance with the position of the fixing brackets 28A and 28B of the embodiment shown in FIGS. This is an embodiment in which metal fittings 28A and 28B are provided.

FIG. 5 shows an embodiment in which the posture stabilizing legs 20 L are projected on both sides of the insulator 20 without providing the fixing brackets 28 A and 28 B. The posture stabilizing leg 20L has an action of preventing the insulator 20 from falling on the substrate 30. In FIG. 5, the size of the posture stabilizing leg 20L is exaggerated.

In any of the embodiments, the fixing brackets 28A and 28B and the insulator 20 of the (or) posture stabilizing leg 20L are adjacent to the fixing brackets 28A and 28B and (or This is the same as the first embodiment in that the protruding positions are different from each other so that the posture stabilizing legs 20L do not contact each other.

In a mode in which the posture stabilizing legs 20L are projected from the insulator 20, the positioning holes 33 formed on the substrate 30 are fitted on the lower surface of at least one posture stabilizing leg 20L as shown in FIG. The entire positioning projection 20P can be formed. Although such positioning projections are formed in conventional products, it is difficult to increase the size of the projections as the thickness of the insulator is reduced. If the posture stabilizing leg 20L is projected from the insulator 20, a large positioning projection 20P can be formed. The positioning projections 20P are desirably provided on the lower surfaces of a pair of posture stabilizing legs 20L separated in the longitudinal direction of the insulator 20.

In the above embodiment, the present invention is applied to a DIMM connector. However, the present invention may be applied to any connector having a fixing metal which is soldered to a dummy pad on a substrate. Applicable.

[0023]

[Effect of the invention]

 As described above, according to the present invention, in a connector aligned and fixed on a board, the mounting density on the board can be increased.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an embodiment of a connector according to the present invention.

FIG. 2 is a plan view showing a state where the two connectors are aligned and arranged.

FIG. 3 is a perspective view showing a state in which three connectors are arranged and viewed from a substrate side.

FIG. 4 shows another embodiment of the connector according to the present invention;
FIG. 3 is a perspective view corresponding to FIG. 2.

FIG. 5 is a perspective view corresponding to FIG. 2 and showing still another embodiment of the connector according to the present invention.

FIG. 6 is a sectional view taken along the line VI-VI in FIG. 5;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 DIMM 11 Fixing recess 12 Land 20 Insulator 20C Center line 20L Posture stabilizing leg 21 Insertion / removal groove 22 Lock projection 23 Lock arm 25 Contact 28A 28B Fixing fixture 30 Substrate 31 Signal land 32 Dummy pad

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[Procedure amendment]

[Submission Date] January 26, 2000 (2000.1.2
6)

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] Claim 10

[Correction method] Change

[Correction contents]

Continuing on the front page (72) Inventor Teruyuki Mori 2-1-1 Kagahara, Tsuzuki-ku, Yokohama-shi, Kanagawa Prefecture Inside Kyocera Elco Corporation (72) Inventor Tsuyoshi Sato 1-3-6 Nakamagome, Ota-ku, Tokyo Shares Inside the company Ricoh

Claims (10)

[Utility model registration claims] 1. A connector provided with at least one pair of fixing brackets protruding from both sides in the longitudinal direction of an insulator supporting a contact group and soldered to a dummy pad on a substrate. A connector characterized in that the protruding positions from the insulator are different from each other so that adjacent fixtures of connectors of the same specification arranged adjacently do not contact each other. 2. The connector according to claim 1, wherein the fixing bracket includes two pairs on both sides in a longitudinal direction of the insulator. 3. The connector according to claim 1, wherein the fixing bracket is provided at a tip of a posture stabilizing leg protruding from the insulator. 4. The connector according to claim 1, wherein the aligned contacts are protruded from both sides in the longitudinal direction of the insulator, are surface-mounted on a substrate by reflow soldering, and the fixing bracket is provided. Is a connector provided at a position that does not interfere with the surface mount portion of the contact group of the adjacent connector of the same specification. 5. The connector according to claim 3, wherein a positioning projection is formed on a lower surface of at least one posture stabilizing leg to fit into a positioning hole formed on the substrate. 6. A connector provided with at least a pair of posture stabilizing legs which are respectively protruded on both sides in the longitudinal direction of an insulator supporting a contact group to contact a substrate, wherein the pair of posture stabilizing legs protrude from the insulator. A connector characterized in that the positions thereof are different from each other so that adjacent posture stabilizing legs of connectors of the same specification arranged adjacently and adjacently do not contact each other. 7. The connector according to claim 6, wherein two pairs of posture stabilizing legs are provided on both sides in the longitudinal direction of the insulator. 8. The connector according to claim 6, wherein the aligned contacts are projected on both sides in the longitudinal direction of the insulator and are surface-mounted on the board by reflow soldering, and the posture stabilizing legs are adjacent to each other. A connector provided at a position that does not interfere with the surface mount part of the contact group of the connector of the same specification. 9. The connector according to claim 6, wherein a positioning projection is formed on a lower surface of at least one posture stabilizing leg to fit into a positioning hole formed on the substrate. . 10. The connector according to claim 1, wherein the insulator is a DIM.
A connector having M insertion grooves, the contacts of which are in contact with the front and back lands of the DIMM.