JPH0523452U - Electrical connector - Google Patents

Abstract

(57) [Abstract] [Purpose] Providing a connector that allows electrical connection between adjacent printed circuit boards and mechanical connection between the boards at the same time (no need for conventional screw connection) to save space and work. Aim for simplification. [Structure] A slit 68 (which communicates with an internal fitting hole 64) is provided on both sides of a cylindrical main body 62, and a female contact 60 having a loop-shaped spring 72 attached thereto; and a receiving groove 54 is provided on the outer periphery of the main body 52. And the male contact 50; When these are fitted, the receiving groove 54
The spring 72 falls and is locked.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a monopolar or coaxial electrical connector, and more particularly to an electrical connector useful for connection between adjacent print substrates.

[0002]

[Prior Art]

 As shown in FIG. 6, some electrical connectors 20 are provided between adjacent printed circuit boards 10 and are used for electrically connecting circuit patterns of the printed circuit boards to each other. FIG. 7 is an enlarged cross-sectional view of the electric connector in FIG. 6, in which a pair of male contacts 30 and female contacts 40 are in electrical contact with each other, and these contacts are respectively an insulating male housing 32 and female housing. It is fixed to 42.

The female housing 42 has a structure to be inserted into the male housing 32 so as to maintain the fitted state of the connector, but normally, this type of connector faces the adjacent prints. Since it is often placed in a deep space between the boards, no connector locking device (device that prevents the connector from being unmated) is provided, and it is a simple plug-in type. The printed circuit boards 10 are fixed by screws 14 or the like via the spacer 12 as shown in FIG.

[0004]

[Problems to be solved by the device]

 In the above-mentioned conventional electric connector, the locking device is not provided, and the printed boards are fixed to each other with screws or the like. However, for example, in the case where one of the adjacent printed circuit boards 10 in FIG. 6 is about several cm in length and width, both fixing and electrical connection of the printed circuit boards should be performed in a space-saving and simpler manner. There are many requests.

The present invention addresses the above-mentioned demand by providing a suitable locking device on the electrical connector so that the printed boards can be fixed to each other.

[0006]

[Means for Solving the Problems]

 As shown in FIGS. 1 to 3, (1) a male contact 50 having a rod-shaped main body 52; and a female contact having a cylindrical main body 62 provided with a fitting hole 64 into which the main body 52 of the male contact is inserted. 60; and (2) the female contact 60 is provided with slits 68 on both sides of the main body 62 that penetrate the fitting hole 64 at right angles to the fitting direction of the electric connector, and A loop-shaped spring 72 is mounted so as to be sandwiched so as to straddle the slits 68 on both sides, and (3) the male contact 50; the spring 72 when fitted to the female contact 60 on the outer periphery of the main body 52 thereof. The structure is such that the recessed receiving groove 54 is provided.

[0007]

[Action]

 With the structure as described above, when the male contact 50 is exposed to the fitting hole 64 of the female contact 60 and further the spring 72 is pushed in so as to be expanded, the spring 72 falls into the receiving groove 54 of the male contact 50. ..

In the direction in which the male contact comes off, the spring 72 does not come off unless a force large enough to cause the spring 72 to come out of the receiving groove 54 is exerted. That is, it is locked.

When the electrical connector of the present application is used for connection between the printed circuit boards 10 (FIG. 1), the printed circuit board 10 with the male contact 50 and the printed circuit board 10 with the female contact 60 are connected as male contacts. By aligning the positions of the female contacts and pressing them together slightly, both electrical connection and printed circuit board fixing can be performed. The completion of fixing can be clearly recognized by the sound and vibration of the spring 72 falling into the receiving groove 54.

To release the fixation, on the contrary, it may be pulled slightly strongly. In this case, the same applies even if one of the printed circuit boards is a flexible type.

[0011]

【Example】

 FIG. 1A shows a state in which male and female contacts 50, 60 are attached to a printed circuit board, and FIG. 1B shows a state in which they are fitted together, and shows a cross section other than the male contact 50. 2 shows a male contact 50, and FIGS. 3A and 3B show a female contact 60.

The male contact 50 has a main body (fitting portion) 52 having a diameter of 3.5 mm and a length of 2.5 mm, and a base 56 having a 5 mm square and a thickness of 0.4 mm is integrally provided, and a diagonal of the base 56 is 0.6 mm. Two corner mounting legs 58 are provided. The legs 58 are soldered to the printed circuit board. In addition, a groove having a radius of 0.3 mm and a depth of 0.2 mm is provided on the entire circumference of the main body 52 as a spring receiving groove 54.

The main body 62 of the female contact 60 is a cylinder having a bottom with an outer diameter of 4 mm, an inner diameter of 3.4 mm, and a length of 2.5 mm. The inside has a fitting hole 64, and the bottom surface is mounted on a printed circuit board. The surface 66 is provided with a positioning protrusion 70 having a diameter of 1 mm in the central portion. The mounting surface 66 (including the positioning protrusion 70 in some cases) is fixed to the printed circuit board by soldering. A slit 68 having a width of 0.4 mm is provided on both wall surfaces of the cylindrical main body 62.

Further, the spring 72 is formed of a wire having a wire diameter of 0.3 mm, and the distance between the arms of the spring in the portion of the female contact 60 that is inserted into the fitting hole 64 is set to be less than 3 mm. The male contact 50 and the female contact 60 are made of brass, and the spring 72 is made of phosphor bronze, and both are plated with gold.

With the male contact and the female contact having the above dimensions, the distance between the upper and lower printed circuit boards could be set to about 3 mm by mounting them on the printed circuit board 10 as shown in FIG.

[0016]

[Another embodiment]

 (1) The rod-shaped body 52 of the male contact 50 includes a round pin having a round cross section, as well as a hexagonal, square, oval, and oval cross section. (2) Further, those having a cavity or a through hole in the central portion are also included. A coaxial two-pole connector can be formed by providing a central hole in the axial direction as a through hole of the male contact 50 and providing a separate contact concentrically with the male contact inside the central hole. The number of contacts provided inside the central hole can be two or more.

(3) Next, the loop shape of the spring 72 includes all the shapes as shown in FIGS. 4 (A) (B) (C) (D).

(4) Further, as shown in FIG. 5, when the arms 74 of the springs on both sides which come into contact with the male cotact are recessed so that the bottom portion 76 of the spring abuts the outer circumference of the female contact 60, the male contact is inserted. At this time, the spring 72 generates a force of advancing in the direction of the concavity, so that there is an advantage that the bottom portion 76 of the spring is pressed against the female contact 60 and the electrical conduction between the spring and the female contact is stabilized. In this case, if the frictional force between the spring 72 and the receiving groove 54 of the male contact 50 is made small (for example, the surface of the receiving groove 54 is made smooth like a mirror surface), the force for moving the spring forward may be increased. ..

(5) Next, the receiving groove 54 of the male contact 50 is sufficient if it is provided partially on both sides of the outer wall of the rod-shaped main body 52, but it is more convenient if it is provided over the entire circumference. There are also many.

[0020]

[Effect of the device]

 As described above, in the present invention, the loop-shaped spring provided on the female contact is made to fall into the receiving groove provided on the male contact for locking, so that it is used between adjacent printed circuit boards. The physical connection of the male and female contacts, that is, the fixing of the printed circuit boards to each other, as well as the electrical connection, can be made only by the electrical connector. (2) Locking and unlocking can be done by slightly pressing or pulling strongly. Even if the connector is installed in the recessed part of the adjacent printed circuit board, locking and unlocking can be done easily. (3) Also, the lock is completed when the spring falls into the receiving groove. It is possible to easily know whether the lock is completed by the sharp sound and vibration.

[Brief description of drawings]

FIG. 1 is an explanatory view of an embodiment of the present invention, in which (A) is before mating,
(B) shows after fitting.

FIG. 2 is an explanatory view of a male contact in the embodiment of the present invention.

3A and 3B are explanatory views of a female contact according to an embodiment of the present invention. FIG. 3A shows a state in which a spring is combined, and FIG.

FIG. 4 is an explanatory view of various modifications of springs.

FIG. 5 is an explanatory view of a modification of a further different spring.

FIG. 6 is a general explanatory view of a connector for connecting printed circuit boards.

FIG. 7 is an explanatory diagram of a conventional technique.

[Explanation of symbols]

 10 Printed Circuit Board 12 Spacer 14 Screw 20 Electric Connector 30,50 Male Contact 40,60 Female Contact 32 Male Side Housing 42 Male Side Housing 52,62 Main Body 54 Receiving Groove 56 Base 58 Mounting Leg 64 Fitting Hole 66 Mounting Surface 68 Slit 70 Positioning protrusion 72 Spring 74 Spring arm 76 Spring bottom

Claims (1)

[Scope of utility model registration request] 1. An electrical connector comprising a male contact having a rod-shaped body, and a female contact having a cylindrical body provided with a fitting hole into which the body of the male contact is inserted. Is provided with a slit penetrating the fitting hole at right angles to the fitting direction of the electric connector on both sides of the main body, and the slit has a wire diameter smaller than the width of the slit and straddles the slits on both sides. A loop-shaped spring is mounted so as to sandwich it, and the male contact is provided with a receiving groove on the outer periphery of the main body, into which the spring falls when fitted to the female contact. The characteristic electrical connector.