JP2503071Y2 - Electrical connector structure - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric connector structure having a double lock.

[0002]

2. Description of the Related Art A conventional electrical connector structure of this type is disclosed in Japanese Patent Application Laid-Open No. 1-213973.

According to the disclosed technique, the protrusion of the elastic arm protruding into the passage of the housing is fitted into the recess of the terminal accommodated in the passage, and the fixing member is provided to prevent the elastic arm from being displaced outward. It is provided.

[0004]

However, in the conventional example, since the terminal is locked at one place and not the double lock, the terminal is locked when the fixing member is disengaged. There is a problem in that the terminal becomes unstable and the terminal cannot be reliably locked to the housing.

The present invention solves the above-mentioned problems and enables double locking of the electrical contact terminals to the connector body, and moreover secures these locking. An object of the present invention is to provide an electric connector structure capable of improving the pull-out strength of the electric contact terminal.

[0006]

In order to achieve the above-mentioned object, the present invention has a lance portion raised up on the bottom surface of the fitting recess of the connector body so that the lance portion mounts a terminal in the fitting recess. Section and an insertion section of an insertion member having a lance restriction section and a terminal restriction section, and a locking projection is provided at an end of the lance section, and a back side of the locking projection of the lance section is provided. A gap is provided between the side wall of the fitting recess, a terminal insertion hole is provided on the bottom surface of the fitting recess, and a locking projection is provided on the terminal mounting portion side of the opening of the fitting recess. Then, the electric contact terminal connected to the electric wire is inserted into the terminal mounting portion of the fitting recess, and the contact portion of the electric contact terminal is inserted between the other side wall of the fitting recess and the lance portion. Lock the locking protrusions on the opening side of the connector body at the corners behind the electric contact terminals. Together, the locking protrusion of the lance part is locked to the front corner of the electric contact terminal, the insertion member is inserted into the insertion part of the fitting recess, and the lance regulation part of the insertion member is It is characterized in that it is inserted into a gap to regulate the escape of the lance portion, and the electric contact terminal is pressed by the terminal regulation portion of the insertion member.

[0007]

With this structure, the first locking for locking the locking projection on the opening side of the socket body at the rear corner of the electrical contact terminal and the locking projection on the lance portion for locking the electrical contact terminal. Double locking with the second locking that locks to the front corner is possible,
Moreover, the electric contact terminal is pressed by the terminal restriction portion of the insertion member to prevent the electric contact terminal from moving, so that the locking protrusion is securely locked to the corner portion, and the lance restriction portion allows the lance portion to escape. To prevent the locking projections from locking to the corners,
The pull-out strength of the electrical contact terminal can be improved.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the drawings.

FIG. 1 is a vertical sectional view of an electric connector structure according to the present invention. This electrical connector structure comprises a male connector 1 and a female connector 2.

The male connector 1 is provided with a block-shaped connector body 3 made of an insulating material, and a fitting recess 4 is provided on the front side of the connector body 3, and a bottom surface portion of the fitting recess 4 is provided. A lance portion 6 is erected on the left side of the lance 5, and a locking projection 7 is formed at an end of the lance portion 6. Then, the fitting recess 4 has a terminal mounting portion for an electric contact terminal, which will be described later, due to the rising of the lance portion 6.
It is partitioned into an insertion portion of an insertion member described later. Also,
A gap 8 is provided between the back side of the locking projection 7 of the lance 6 and the left side wall 4 a of the fitting recess 4. A terminal insertion hole 9 is formed on the bottom surface 5 of the fitting recess 4 toward the right side, and the locking projection 1 is provided on the right side of the opening 10 of the fitting recess 4.
1 is protruding.

Reference numeral 12 is an electric contact terminal. As shown in FIG. 5, the electric contact terminal 12 includes a contact portion 14 and a connecting portion 15 connected to the rear portion of the contact portion 14, and the contact portion 14 has a structure in which two contact pieces 13 are combined. The connecting portion 15 includes a cover crimping portion 17 having a U-shaped upright crimping piece 16 and a core wire crimping portion 19 having a U-shaped upright crimping piece 18.

Then, the core wire 21 of the electric wire 20 is crimped with the crimping piece 18 of the core wire crimping portion 19 and the covering portion 22 of the electric wire 20 is crimped with the crimping piece 16 of the covering crimping portion 17 to connect the electric contact terminal 12 to the electric wire 20. I am doing it.

In this case, the rear end portion (rear corner portion) of the covering crimp portion 17 of the electric contact terminal 12 serves as the first locking portion 23, and the rear end portion of the contact portion 14 (front corner portion). ) Plays a role as the second locking portion 24.

Reference numeral 25 is an insertion member, and this insertion member 25 is formed by projecting a lance restriction portion 27 at the end of a block-shaped terminal restriction portion 26.

Then, the electric contact terminal 12 and the insertion member 25 are inserted into the fitting concave portion 4 of the connector body 3, and the electric wire 20 is connected to the male side connector 1.

That is, the contact portion 14 of the electrical contact terminal 12
Is inserted between the right side wall portion 4b of the fitting recessed portion 4 and the lance portion 6, and the locking protrusion 11 of the opening 10 of the socket body 3 is first locked at the connection portion 15 of the electric contact terminal 12. The locking projection 7 of the lance 6 is locked to the electric contact terminal 12
The second locking portion 24 of the contact portion 14 is locked. In this state, as shown in FIG. 7, the insertion member 12 is inserted into the fitting concave portion 4, and the lance regulating portion 27 of the inserting member 12 is provided on the rear side of the locking projection 7 of the lance portion 5 and the left side of the fitting concave portion 4. While inserting the gap 8 between the wall 4a and the terminal regulating portion 26,
Between the left side wall 4a and the electric contact terminal 12,
With this terminal regulation portion 26, the cover crimp portion 1 of the electric contact terminal 12 is provided.
7 is pressed to prevent the electric contact terminal 12 from moving, so that the locking projection 11 is securely locked to the first locking portion 23, and the lance restricting portion 27 prevents the lance portion 6 from escaping. do it,
The locking projection 7 is securely locked to the second locking portion 24.

The female connector 2 is provided with a connector body 28 made of an insulator, and a fitting portion 29 is provided on the connector body 28. A terminal mounting portion 31 of a bottom surface portion 30 of the fitting portion 29 is provided. The terminal 32 is attached to the terminal 32, and the terminal 32 projects into the fitting portion 29. This terminal 32 has an electric wire 3
3 is connected.

Therefore, the fitting portion 29 of the female connector 2
When the male connector 1 is inserted and fitted into the
The terminal 32 is inserted into the contact portion 14 of the terminal 32, and the terminal 32 comes into contact with the contact piece 13 to establish conduction.

The insertion members 25 may be independent one by one as shown in FIG. 6, but the adjacent insertion members 25 as shown in FIG. The end portion of 27 is connected by a thin portion 34, and a plurality of insertion members 25 are connected to each other, and the lance regulating portion 27 is provided on the back side of the locking projection portion 7 of the lance portion 6 and the fitting concave portion 4. After inserting the gap 8 between the left side wall 4a and the left side wall 4a, the thin wall portion 34 may be folded away as shown in FIG.

According to the above-described embodiment, the first locking for locking the locking projection 11 on the opening side of the socket body 3 with the first locking portion 23 of the electric contact terminal 12, and the lance portion 6 are provided. It becomes possible to double-lock the locking projection 7 of the second locking with the second locking 24 of the electric contact terminal 12, and the terminal restriction 26 of the insertion member 25 The electric contact terminal 12 is pressed to prevent the electric contact terminal 12 from moving, and the locking projection 11
Of the locking projection 7 is secured to the first locking portion 23, and the lance restricting portion 27 prevents the lance portion 6 from escaping, so that the locking projection 7 is locked to the second locking portion 24. Therefore, the pull-out strength of the electrical contact terminal 12 can be improved.

[0021]

As described above, according to the present invention, the lance portion is set up on the bottom surface of the fitting concave portion of the connector body, and the lance portion allows the terminal mounting portion and the lance regulating portion to be formed in the fitting concave portion. It is partitioned into an insertion portion of an insertion member having a terminal regulation portion, and a locking projection portion is provided at an end portion of the lance portion,
A gap is provided between the back side of the locking projection of the lance and one side wall of the fitting recess, a terminal insertion hole is provided on the bottom surface of the fitting recess, and the opening of the fitting recess is formed. An engaging projection is provided on the terminal mounting portion side, an electric contact terminal connected to an electric wire is inserted into the terminal mounting portion of the fitting recess, and the contact portion of the electric contact terminal is attached to the other side wall of the fitting recess. The locking protrusion on the opening side of the connector body is locked to a corner on the rear side of the electrical contact terminal, and the locking protrusion on the lance part is inserted into the electrical contact terminal. While locking at the front corner of the contact terminal, inserting the insertion member into the insertion portion of the fitting recess, and inserting the lance regulating portion of the insertion member into the gap to regulate the escape of the lance portion. The opening of the socket body is caused by pressing the electric contact terminal with the terminal regulation part of the insertion member. Side locking projections that lock the side locking projections to the rear corners of the electrical contact terminals, and second locking that locks the locking projections of the lances to the front corners of the electrical contact terminals. It is possible to double lock with the stopper, and moreover, the electric contact terminal is pressed by the terminal regulation part of the insertion member to prevent the electric contact terminal from moving, and the locking projection is securely locked to the corner portion. Further, the lance restricting portion prevents the lance portion from escaping to ensure the engagement of the engaging projection with the corner portion, thereby improving the pull-out strength of the electrical contact terminal.

[Brief description of drawings]

FIG. 1 is a vertical sectional view of an electric connector structure according to the present invention.

FIG. 2 is a cross-sectional view showing the electric connector structure before connection.

FIG. 3 is a vertical cross-sectional view of a connector body of a male connector having the same electrical connector structure.

FIG. 4 is an explanatory diagram of an electric contact terminal before connecting electric wires.

FIG. 5 is a side view of the electric contact terminal.

FIG. 6 is a side view of the insertion member.

FIG. 7 is an explanatory diagram showing a state in which the insertion member is inserted into the connector body after inserting the electrical contact terminal into the connector body.

FIG. 8 is a side view showing another embodiment of the insertion member.

9 is a cross-sectional view showing a state before connection of an electric connector structure using the insertion member shown in FIG.

[Explanation of symbols]

 3 Connector Main Body 4 Fitting Recess 6 Lance 7 Locking Protrusion 9 Terminal Inserting Hole 10 Opening 11 Locking Protrusion 12 Electrical Contact Terminal 25 Inserting Member 26 Terminal Restricting Part 27 Lance Restricting Part

Claims (1)

(57) [Scope of utility model registration request] 1. A lance portion is erected on a bottom surface portion of a fitting recess of a connector body, and an insertion member having a terminal mounting portion, a lance regulating portion and a terminal regulating portion is inserted into the fitting concave portion by the lance portion. And a locking protrusion is provided at the end of the lance, and a gap is provided between the rear side of the locking protrusion of the lance and one side wall of the fitting recess. A terminal insertion hole is provided in the bottom surface of the fitting recess, and a locking projection is provided on the opening of the fitting recess on the terminal mounting portion side.
The electric contact terminal connected to the electric wire is inserted into the terminal mounting portion of the fitting recess, and the contact portion of the electric contact terminal is inserted between the other side wall of the fitting recess and the lance portion. The locking protrusion on the opening side of the electric contact terminal is locked at the rear corner of the electric contact terminal, and the locking projection of the lance portion is locked at the front corner of the electric contact terminal. The member is inserted into the insertion portion of the fitting recess, the lance regulation portion of the insertion member is inserted into the gap to regulate the escape of the lance portion, and the electric contact terminal is pressed by the terminal regulation portion of the insertion member. An electrical connector structure characterized in that