JP2596689Y2 - 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, and more particularly to a receptacle connector for a power supply tab terminal.

[0002]

2. Description of the Related Art As a conventional receptacle connector for a power supply tab terminal, for example, there is a type as shown in FIG. That is, the electric wire C is connected to one end of the receptacle 50.
A core wire crimping portion 51 for crimping and holding the core wire CW and an electric wire coating holding portion 52 for crimping and holding the sheath of the electric wire are formed.
At both ends on the other end side, channel-shaped guides 53 are formed by bending inward. A tongue-shaped contact piece 55 bent inward (toward the core wire crimping portion 51) is formed between the guides 53 at the distal end of the receptacle 50. The contact piece 55 is separated from the substrate surface and has a spring property. At the center in the longitudinal direction of the contact piece 55, a locking projection 57 that engages with a locking opening formed on a tab (not shown) is formed. Contact piece 5
5 has a lever portion 59 that is formed obliquely upward. A housing 60 is provided so as to cover these components.

[0003] Next, the insertion and removal of a tab into and from such a receptacle connector will be described.

When a tab (not shown) is inserted between the guides 53, the contact pieces 55 are pushed down. Then, the tab is inserted as it is, and when the tab comes to the predetermined position, the contact piece 55 returns to the original position, and the projection 57 formed on the contact piece 55 fits into the locking opening formed in the tab. Then, the connection between the tab and the receptacle connector is completed. next,
To remove the tab, the housing 60 is slid in the direction of the arrow. Then, the inclined wall portion 61 formed on the housing 60 pushes down the lever portion 59 of the contact piece 55, and the locking projection 57 is disengaged from the locking opening of the tab.
You can pull out the tab.

[0005]

By the way, in the tab connector of the type described above, when the engagement of the locking projection 57 with the locking opening of the tab is released, the inclined wall of the housing 60 is required. The part 61 is required. For this reason, the height of the housing 60 in the direction perpendicular to the tab insertion / extraction direction must be increased. In addition, the receptacle is also a lever 59
Are connected in the longitudinal direction of the contact piece 55, so that the development length of the housing in the insertion / removal direction becomes long, and material removal must be extremely poor.

The present invention has been proposed in view of the above-mentioned problems of the prior art. In inserting and removing a mating tab, insertion, locking, unlocking, and detachment can be performed as usual, but the material removal of the contact can be improved. An object of the present invention is to provide a receptacle connector for a tab that can be designed.

[0007]

According to the present invention, a metal receptacle (1) electrically connected to a core wire (CW) of an electric wire, and a slidably provided in the receptacle in a tab insertion / removal direction. An electrical connector having a housing (2) and electrically connecting a core wire of the electric wire to the tab when the tab (4) is inserted into the receptacle, wherein the receptacle crimps the core wire of the electric wire. A core wire holding portion (11), a base (10) connected to the core wire holding portion, a contact portion (14) connected to the base, and the receptacle connected to the base and being combined with the contact portion. An elastic contact piece (15) urged toward the contact portion to pinch and connect the tab in a state where the tab is inserted, and an elastic contact piece provided on the elastic contact piece and connected to the receptacle. The locking projection (17) that engages with the locking opening (41) formed in the tab when the tab is inserted, and is provided only on one side of the free end of the elastic contact piece. A lever portion (19) protruding in a horizontal direction intersecting with the tab insertion / removal direction, and the housing has an inclined wall portion (2) in contact with the lever portion.
2) is formed, and the inclined wall portion is formed so as to converge the internal space defined by the inclined wall portion toward the tab insertion opening (25), and the contact portion is provided with the locking projection. Has a pair of contacts (14a and 14b) for pressing forward and backward of the locking opening in a state in which the tab is engaged with the locking opening of the tab, and in a state where the tab is inserted into the receptacle, An electrical connector is obtained in which the tab can be securely locked by sandwiching the tab between the pair of contacts and the elastic contact piece.

[0008]

According to the present invention having the above construction, the tab is inserted between the contact portion and the elastic contact piece in a sandwiching state, and the locking projection formed on the elastic contact piece and the locking opening formed on the tab. The parts are engaged to complete the connection. When removing the tab from the connector, the housing is slid in the direction opposite to the tab insertion direction. Then, the inclined wall portion formed inside the housing pushes down the lever portion, whereby the elastic contact piece integral with the lever portion is pushed down against the elastic bias. Then, the holding force of the tab by the elastic contact piece and the contact portion is relaxed, and the tab can be removed.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to the accompanying drawings.

FIG. 1 is a perspective view showing a basic mode of the receptacle 1 of the electric connector of the present invention, FIG. 2 is a sectional perspective view showing a state where the receptacle 1 is mounted on a housing 2, and FIG. It is sectional drawing.

As shown in FIG. 1, the receptacle 1 is formed from a thin metal plate, and a core wire crimp holding portion 1 for crimping and holding a core wire CW of an electric wire C is provided on one end side of a base 10.
1 and an electric wire covering presser 12 for crimping and holding the electric wire jacket.

At the other end of the base 10, a base 1
The guide portion 13 is formed in a wide shape from both sides of the zero, and is formed by bending the wide portion upward at a right angle. The guide portion 13 serves as a guide when inserting the tab. At both upper ends of the guide portions 13, contact portions 14 extending substantially parallel to the base 10 are formed. The two contact portions 14 are arranged side by side at a predetermined interval, and hold both sides of the tab together with an elastic contact piece 15 described later when the tab is connected.

An engagement hole 18 is formed in the bottom surface of the base 10 to engage with an engagement projection formed on the housing when the receptacle 1 is housed in a housing described later.

An elastic contact piece 15 is formed by being bent inward (in the direction toward the core wire crimping portion) on the other end side of the base 10 and beyond the contact portion 14. This elastic contact piece 15 has two contact portions 14 on both sides.
It is surrounded by the space and elastically urged in the direction of the contact portion 14 so as to connect the tab together with the contact portion 14 in a sandwiched state.

A locking projection 17 for engaging with a locking opening formed in the tab is formed between the contact portions 14 at a substantially middle position in the longitudinal direction of the upper surface of the elastic contact piece 15. I have. The engagement between the locking projection 17 and the locking opening locks the tab and the receptacle 1 so that the tab is prevented from accidentally falling out of the connector.

The free end side of the elastic contact piece 15 is bent at a right angle toward one side, and the bent portion forms the lever portion 19. The bending angle of the lever portion 19 with respect to the body of the elastic contact piece 15 does not necessarily have to be a right angle. Further, the lever portion 19 does not necessarily have to be integrally formed with the elastic contact piece 15, but may be a separately formed one which is joined to a corresponding portion of the elastic contact piece 15 by soldering or the like.

Next, the structure of the housing 2 and the state in which the receptacle 1 having the above structure is housed and held in the housing 2 will be described.

As shown in FIGS. 2 and 3, the receptacle 1 is inserted into the internal space 20 of the housing 2. At this time, the engagement projections 21 formed on the bottom wall of the housing 2
Engages with the engagement hole 18 of the receptacle 1. The engagement hole 18 has a long hole shape, and the engagement protrusion 21 is movable in the groove direction in the engagement hole 18 when the housing 2 described later is slid.

On the side of the internal space 20 of the housing 2, an inclined wall portion 22 that contacts the lever portion 19 of the receptacle 1.
Are formed. The inclined wall portion 22 is formed so as to descend toward the tab insertion port side. As shown in FIG. 3 in a state before the tab is connected, the lever portion 19 is located above the inclined wall portion 22. That is, the lever portion 19 is not pushed down, and the elastic contact piece 15
Is in a state of being lifted toward the contact portion 14 by an elastic force.

In the drawing, 25 at the tab insertion / extraction end (left side in the drawing) of the housing 2 is a guide groove for inserting a tab formed on the side wall of the housing 2.

Next, the case where the tab is connected to the connector will be described.

As shown in FIG. 4, the tab 4 is
Is inserted toward the inside from the guide groove 25 formed in the side wall of the insertion / extraction-side end of the first embodiment. At this time, the tab 4 is guided between the contact portion 14 and the elastic contact piece 15 and enters while pressing the elastic contact piece 15. When the tab 4 is inserted into the receptacle of a predetermined dimension in a state of being inserted, the locking projection 17 formed on the upper surface of the elastic contact piece 15 is fitted into the locking opening 41 formed in the tab 4, and Is prevented from accidentally falling out of the receptacle 1 in the connected state.

If the contact portion 14 is formed in a wave shape as shown in the drawing, the tab 4 is sandwiched between the front and rear contacts 14a, 14b and the elastic contact piece 15, whereby the tab 4 and the receptacle are connected. 1 and the tab 4 is securely locked. The contact portion 14
Need not be at two locations as shown in the figure, but may be at three or more locations including the front and rear contacts 14a, 14b.

Next, a case where the tab 4 is removed from the connector will be described.

As shown in FIG. 5, the housing 2 is slid in the direction of arrow A with respect to the receptacle 1. Then, the elastic contact piece 15 moves down along the inclined wall portion 22 and pushes down the elastic contact piece 15. As a result, the state in which the tabs 4 are nipped by the elastic contact pieces 15 is released, and the locking projections 17 are disengaged from the tab lock opening 41, so that the tabs 4 can be removed.

Then, after the tab 4 is pulled out,
If the housing 2 is slid in the direction of arrow B before the next tab is inserted, the state shown in FIG. 3 is restored.

In the above-described embodiment, the case where one receptacle 1 is provided is shown. However, the present invention can also be constituted by arranging a plurality of the receptacles 1 in the vertical direction or the horizontal direction (perpendicular to the paper surface). . In this case, the housing 2 is also configured correspondingly.

[0028]

[Effects of the Invention] As described above, according to the present invention,
Since the lever portion is provided so as to protrude in a substantially horizontal direction from the elastic contact piece, there is no need to raise the position of the inclined wall portion, so that it is not necessary to increase the height of the housing, and to meet demands for miniaturization. I can respond.

Further, the conventional elastic contact piece and the lever portion are integrally connected in the longitudinal direction, and the length dimension in the insertion / extraction direction at the time of development (before bending) becomes longer, and material removal is poor. . However, according to the present invention, since the lever portion is formed in the horizontal direction with the elastic contact piece, the length of the elastic contact piece in the insertion / extraction direction can be shortened, and the length in the insertion / extraction direction at the time of deployment can be shortened. And material removal can be improved.

According to the present invention, when the tab is inserted into the receptacle, the tab is sandwiched by the pair of contacts and the elastic contact pieces that press the front and back of the locking opening, so that the tab can be locked and locked. Connection can be ensured. In addition, since the lever portion is provided only on one side of the free end of the elastic contact piece, the receptacle and the housing can be small, and the mold for the receptacle and the housing can be manufactured at low cost.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a receptacle used in the connector of the present invention.

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

FIG. 3 is a side sectional view of the connector of the present invention.

FIG. 4 is a side sectional view illustrating the operation state of the connector of the present invention.

FIG. 5 is a side cross-sectional view illustrating an operation state of the connector of the present invention.

FIG. 6 is a cutaway perspective view of a conventional connector.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Receptacle 2 ... Housing 4 ... Tab 10 ... Base part 11 ... Core wire crimping part 12 ... Wire covering holding part 13 ... Guide part 14 ... Contact part 15 ... Elastic contact piece 17 ... Locking projection 19 ... Lever part 21 ... Engagement Projection 22 ... Slope wall part 25 ... Guide groove 50 ... Receptacle 51 ... Core wire crimping part 52 ... Electric wire sheath holding part 53 ... Guide part 55 ... Contact piece 60 ... Housing 61 ... Slope wall part C ... Electric wire CW ... Core wire

Claims (1)

(57) [Scope of request for utility model registration] A metal receptacle electrically connected to a core (CW) of an electric wire; and a housing slidably provided in the receptacle in a tab insertion / extraction direction. In an electric connector for electrically connecting a core wire of the electric wire and the tab when the tab (4) is inserted into the receptacle, the receptacle comprises: a core wire holding portion (11) for crimping and holding the core wire of the electric wire; A base (10) connected to the core wire holding portion; a contact portion (14) connected to the base; and a tab connected to the base and inserted into the receptacle together with the contact portion while the tab is inserted into the receptacle. An elastic contact piece (15) urged toward the contact portion for pinching connection; provided in the elastic contact piece, and a tab inserted into the receptacle; A locking projection (17) that engages with a locking opening (41) formed in the tab, and is provided only on one side of the free end of the elastic contact piece.
A lever portion (19) protruding in a horizontal direction intersecting with the tab insertion / removal direction, and an inclined wall portion (22) contacting the lever portion is formed in the housing; The internal space defined by the inclined wall portion is formed so as to converge toward the tab insertion opening (25), and the contact portion has the locking projection engaged with the locking opening of the tab. A pair of contacts (14a and 14b) for pressing back and forth of the lock opening in the state, and a tab being sandwiched between the pair of contacts and the elastic contact piece in a state where the tab is inserted into the receptacle. An electrical connector characterized in that the tab can be reliably locked in such a manner.