JP2603375Y2 - Electrical connector - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electrical connector used in an electronic device, and particularly to a low-profile type (with a reduced mounting height) in which a contact fitting depth is shallow,
The present invention relates to a high-density connector having a small arrangement pitch of contacts.

[0002]

2. Description of the Related Art FIG. 3 shows an example of a conventional connector for a device. 10A is a female connector, 12A is its insulating block, and 14A is a contact. 10B is a male connector, 12B is its insulating block, and 14B is a contact. When the connectors 10A and B are fitted together,
The insulating blocks 12A and 12B are fitted with each other, and the electric contact portion 16 of one of the contacts 14A having elasticity moves while being pressed against the surface of the other contact 14B, so that they are in electrical contact with each other. . Also,
The insulating block 12A. B and contacts 14A, B
The mating state of the connectors 10A and 10B is maintained by the frictional force of the mating between them, and the connectors 10A and 10B are prevented from coming off. Contact tail 18
A and B are usually mounted on a printed circuit board.

[0003]

In recent years, the miniaturization of electronic devices has been rapidly progressing, and accordingly, the size and height of electric connectors have also been reduced. When the size of the electrical connector is reduced, the size of the contacts must be reduced, and the length of the mating between the insulating blocks 12A and 12B also decreases. The low profile type exacerbates these trends. As described above, when the size of the contact becomes smaller and the elastic force becomes weaker, or when the length of the insulating blocks fitted to each other becomes smaller, these contacts 1 become smaller.
The frictional force of fitting the 4A, B and the insulating blocks 12A, B is also reduced, the force for preventing the connectors 10A, B from falling off, ie, the locking force, is reduced, and the reliability as a connector is reduced.

[0004] This decrease in reliability cannot be overlooked especially in a stacking connector as shown in FIG. 4 in which a sub-board 22 provided in parallel with a main board 20 as a printed circuit board is fixed only by a connector 10. Has become. Reference numeral 24 denotes a memory element or the like.

[0005] In recent years, the fitting length (fitting stroke) of the connector has become extremely small. For example, when the fitting stroke is about 2 mm, when the connector is manually fitted, the fitting length is reduced. It's hard to tell when it's completed,
Insufficient fitting and conversely, damage to the connector due to excessive pushing, etc. become problems.

[0006]

SUMMARY OF THE INVENTION The present invention is intended to provide a more reliable locking force even when the size and height are reduced, and to easily know the time of completion of fitting even if the fitting stroke is small. An electrical connector that can make electrical contact with a pair of contacts rubbing against each other by fitting as shown in FIGS. 1 and 2. (1) Of the pair of contacts, The one contact 40 has a plate-like tip portion and has a bifurcated shape having elasticity in the thickness direction. The other contact 60 has a shape that fits inside the bifurcated shape. (2) Of the bifurcated portions of the one contact 40
Of one of the branches 44, to the inside of the bifurcated has an electrical contact portion 45, the Ri other <br/> Oh the contact 60 as in electrical contact, and the other branch 46 of the other contact 60, a lock mechanism comprising a combination of a projection 68 and a recess 48 into which the projection 68 falls. (3) When fitting the contacts 40 and 60,
The other branch 46 provided with a lock mechanism and the connector
When the contact with the contact 60 is made, the electric contact portion 45 and the contact
The structure is made after the contact with the tact 60 .

[0007]

(1) In addition to the structure in which one of the forked contacts 40 sandwiches the other contact 60 with elasticity, and the projection 68 falls into the recess 48, the projection 68 is recessed. From being easily escaped from. (2) Since the projection 68 falls into the depression 48 at the time of completion of the fitting, it is possible to know the completion time of the fitting with a click sound at that time. (3) Since both the protrusion 68 and the depression 48 are formed of metal as a contact member, a crisp click sound can be easily obtained. (4) One of the forked portions (one branch 44) should be electrically contacted.
The other (the other branch 46) is used for locking
And therefore, especially in the low profile,
Operation is expected. (5) The other branch 46 provided with the lock mechanism and the front
The contact with the contact 60 is in front of the electrical contact portion 45.
The structure is made after the contact with the contact 60
The maximum value of the insertion force when mating the connector.
Can be reduced.

[0008]

1 is a sectional view of the present embodiment, and FIG. 2 is a partially cutaway perspective view. 1 and 2, the female connector 3 is used.
0 is drawn in a state located above the male connector 50. Reference numeral 32 denotes an insulating block of the female connector 30, which is a central portion 34, both sides 35, an intermediate portion 36, and a portion 38 connecting these at both ends (FIGS. 1 and 2). Both are not shown). Contact 40 of female connector 30
The portion following the contact tail 42 is divided into one branch 44 and another branch 46. The one branch 44 extends in the horizontal direction, and then the tip extends downward in the vertical direction. The one branch 44 does not touch the portion 36 of the insulating block 32. This makes it easy to obtain sufficient elasticity even when the size of the contact 40 is reduced. The bulge at the tip of one branch 44 is an electrical contact 45. The other branch 46 extends downward in the vertical direction, and is fixed to the third portion of the insulating block 32 by the fixing portion 47.
It is fixed to six parts. Locking depression 48 at the tip
Is provided.

Reference numeral 52 denotes an insulating block of the male connector 50. The insulating block 52 is a central portion 54, a 55 portion on both sides thereof, and a 56 portion connecting these at both ends (FIG. 1).
2 is not shown in FIG. 2).
In this example, the contact 60 of the male connector 50 has a bifurcated shape including an inner pillar 62 and an outer pillar 66, but this is for fixing to the portion 55 of the insulating block 52, and is not necessarily required. You don't have to be bifurcated. The fixing to the insulating block 52 is performed by the fixing portion 63 of the inner pillar 62. The inner column 62 has a surface 64 against which the electrical contact portion 45 of the one contact 40 slides.
A locking projection 68 is provided on the outer column 66. This has a size and shape that fall into the locking recess 48 of the female connector 30.

The height of the inner pillar 62 is lower than that of the outer pillar 66. This is because the electrical contact 45 of one contact 40 is
And the timing at which the locking projection 68 comes into contact with the other branch 46 of one of the contacts 40. By doing so, the maximum value of the insertion force at the time of fitting the connector can be reduced.

In this embodiment, the connectors are fitted only by the contacts 40 and 60, not by the fitting of the insulating blocks. For this reason, the allowable number of insertion / removal can be easily increased.

Each of the contacts 40 and 60 is formed by stamping a plate material with a press, and can be integrated at a very high density in the arrangement direction when the number of poles is increased (FIG. 2), and does not hinder miniaturization of the connector.

[0013]

Advantages of the Invention (1) A reliable retaining force is obtained by the locking means using a metal contact member, and the reliability is improved. (2) Since the completion of the fitting can be surely recognized by the crisp click sound, the fitting mistake of the connector is eliminated, and the fitting operation is facilitated. (3) Even the portion provided with the lock means makes electrical contact,
Since the metal has two-point contact, the contact reliability is improved. (4) One of the pair of contacts has a bifurcated shape having a plate-like end portion and elasticity in the thickness direction, and the other contact fits inside the bifurcated shape. Because of the matching shape, each contact can be made extremely thin as described above. Therefore, when the number of electrodes is increased, integration can be performed at a very high density in the arrangement direction, and the size of the connector can be reduced. (5) The other branch 46 provided with the lock mechanism and the front
The contact with the contact 60 is in front of the electrical contact portion 45.
The structure is made after the contact with the contact 60
The maximum value of the insertion force when mating the connector is reduced.
Can be made.

[Brief description of the drawings]

1A and 1B are cross-sectional views of an embodiment of the present invention, wherein FIG. 1A shows a non-fitting state, and FIG.

FIG. 2 is a partially cutaway perspective view of the embodiment of the present invention.

FIG. 3 is an explanatory diagram of a conventional technique.

FIG. 4 is an explanatory view of an example of a use state of a connector (common to the conventional art and the present invention).

[Explanation of symbols]

 10, 10A, 10B Connector 12A, 12B, 32, 52 Insulation block 14A, 14B, 40, 60 Contact 16, 45 Electrical contact 18A, 18B, 42 Contact tail 20 Main board 22 Sub board 30 Female connector 44 One branch 46 Other branches 47,63 Fixed part 48 Depression 50 Male connector 62 Inner pillar 64 Surface 66 Outer pillar 68 Projection

Continuation of the front page (56) References JP-A-4-43579 (JP, A) JP-A-4-51782 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) H01R 23 / 02 H01R 23/68 H01R 13/04 H01R 13/11

Claims (1)

(57) [Scope of request for utility model registration] 1. A mating contact 40,
60. An electrical connector in which 60 rub against each other and make electrical contact, wherein one of said pair of contacts 40
The tip is plate-shaped and has a bifurcated shape having elasticity in the thickness direction, and the other contact 60 has a shape that fits inside the bifurcated shape. One branch 44 of the forked portion has an electrical contact portion 45 inside the forked portion and is in electrical contact with the other contact 60, and
Between the other branch 46 and the other contact 60, and the locking mechanism is provided, which consist of a combination of depressions 48 fall protrusions of the protrusion 68 Toko, upon engagement of the contact 40, 60, the locking
The other branch 46 provided with a mechanism and the contact
The contact with the electric contact part 45 and the contact
60. An electrical connector, characterized in that it is constructed after contact with 60 .