JPS61188870A - Electric connector - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a connector for electrical connections, and more particularly to a connector in which connection terminals are housed within an insulating plastic housing.

An electrical connection terminal is inserted into the connector housing from the rear, and a locking arm protruding inward from the side wall locks the rear end of the inserted terminal to prevent the terminal from coming out from the rear. The structure of such a connector is known. However, in the unlikely event that the connector is assembled into the device without realizing that it has been inserted incompletely, and the connector becomes loose during use, it may not only cause a malfunction, but also cause a poor connection to be discovered. It is difficult.

Therefore, when assembling the connector, Japanese Patent Publication No. 57-52715 proposed a flap with a shoulder for locking the terminal as a technique that makes it easy to insert the terminal into the housing and does not cause incomplete locking. A connector housing is disclosed that is hinged to a side wall of the housing. As shown in FIG. 6, in this known connector, even if the terminal 11 is not completely inserted, the shoulder part 14 of the flap 13 is rounded, so that when the flap 13 is pushed down, the locking part 12 of the terminal is pressed down. The structure is such that a force pushing forward is generated and the terminal can be locked in a predetermined position.

However, with this technique, it is not possible to make the rounded part of the shoulder large, so if the terminal is not fully inserted, the pushing action will not work, and the terminal will have to be pushed in further using a separate appropriate tool. This required a lot of effort.

Problems to be Solved The present invention seeks to provide a connector that allows complete insertion of terminals without using any tools or the like, and that prevents the terminals from becoming unlatched.

Means for Solving the Problems An object of the present invention as described above is to provide a connector in which a terminal is inserted into a housing provided with a terminal stopper for restricting the advancement of the terminal into a terminal accommodating chamber using a spacer that allows the terminal to be pushed into the housing. The housing includes a window in which a spacer can be engaged with a side wall, two guide slits extending parallel to the front on both sides of the window, and a tab-shaped wall sandwiched between the guide slits. The spacer includes a main body that can slide on the outer surface of the side wall of the housing, a sliding member that is provided below the main body and that can engage with the side edge of the window and the guide slit, and a tab-shaped wall that is provided below the main body substantially in parallel. This is accomplished by having a flexible arm that can be pushed from above and protruded into the terminal receiving chamber by entering the lower part of the housing, and a hook that locks into the housing.

Hereinafter, the present invention will be explained based on the drawings.

Reference numeral 1 designates a connecting terminal of the connector, the front half of which is formed with a female terminal portion with an elastic contact piece 1c facing inward, and the tip of a conductive wire 4 inserted into the rear end. Crimp bonded. At the rear edge of the front half of the terminal l, first and second locking parts 1a and lb are provided on both the lower and upper sides.
is formed.

Reference numeral 2 denotes a connector housing, and a terminal stopper 2a for stopping the forward movement of the terminal l is provided inwardly protruding from the front end of the connector housing. A first locking arm 2b is provided to protrude inward to stop the movement of the locking member 1 from moving backward.

Further, a window 2C is provided on the outer surface of the housing 2, and a guide taper 2h is formed on both sides of the window 2C, and two guide slits 2d are provided at the front following the window 2C, with a tab 2e in between. It is extended parallel to. tab 2
The tip of e is thinly shaved. 2f is a locking hole;
g is a groove continuously provided on the side edge of the window 2C and the side surface of the guide slit 2d.

Reference numeral 3 designates a spacer, in which coupling members 3b are protruded from both sides of the lower surface of the front part of the spacer body 3a, and a second arm 3C is further provided to protrude forward in parallel with the spacer body 3a, straddling them. There is.

The second arm 3C is flexible and can bend up and down, and is provided with a raised portion 3d on the upper side of its tip. A sliding claw 3e that can be slidably engaged with -2g is provided on the outer surface of the coupling member 3b. 3f is a spacer locking claw, 3
g is a tab entrance.

When the spacer 3 thus formed is superimposed on the upper surface of the housing 2 and the second arm 3C is inserted into the window 2c together with the coupling member 3b, the sliding claw 3e moves into the guide taper 2h.
, and engages with groove 2g. When the terminal 1 is inserted from the rear of the housing 2, the terminal l pushes down the first locking arm 2b and moves forward, and normally the locking part 1a of the terminal returns to its original position with the first locking arm 2b. However, if the rigidity of the electric wire 4 is insufficient, the wire 4 will not be pushed all the way and will stop. At this time, when the spacer 3 is moved forward, the protrusion 3d of the second arm 3C rides on the tab 2e, and the second arm 3C moves forward while protruding into the terminal accommodating chamber, so that it touches the second locking shoulder 1b of the terminal l. When it hits, it pushes terminal 1 further forward. At this time, since the tab 2e passes through the entrance 3g between the second arm 3e and the spacer main body 3a and comes into contact with the lower surface of the spacer main body 3a, the tab 2e can be securely inserted into the spacer without bending upward. 2 Push down arm 3c. Then, at the same time as the terminal 1 advances and the first locking arm 2b comes into engagement with the locking layer 1a,
A locking claw 3f provided at the rear end of the spacer body 3a locks into a locking hole 2f provided at the rear end of the housing 2, and the connection between the spacer 3, housing 2, and terminal 1 is completed.

The guide groove 2g in the present invention can be provided on the inner wall surface of the housing inside the guide slit 2d instead of being provided on the side surface of the guide slit 2d as in the present embodiment, and the guide groove 2g can be provided on the inner wall surface of the housing inside the guide slit 2d. It may be. Furthermore, the locking holes 2r and locking claws 3f for locking the housing 2 and the spacer 3 may be provided not only at the rear end but also at any appropriate position, and an appropriate engagement type may be selected. It is possible to use it.

Effects of the Invention As explained in detail above, in the electrical connector of the present invention, when inserting the terminal, the terminal is pushed in using a spacer, so when the assembly is completed, it is always fully inserted, and there is no problem. Full insert does not occur. In addition, since the terminals are completely locked and are locked repeatedly, the terminals do not come out backwards, which increases reliability and also enables automatic assembly.

[Brief explanation of drawings]

FIG. 1 is a vertical sectional view showing the structure of the electrical connector of the present invention, (al is a diagram in the middle of inserting a terminal, (bl
This is a diagram after the terminal has been inserted. Figure 2 is a cross-sectional conceptual diagram showing the state of connection between the housing and the spacer;
The figures are perspective views for explaining the structure of the housing, FIG. 4 is a perspective view of the housing and spacer before assembly, and FIG. 5 is an external perspective view of the housing and spacer in an assembled state. 6th
The figure is a sectional view of a connector according to known technology. l... Connection terminal, 2... Housing, 3... Spacer, 4... Electric wire. Figure 2C

Claims (1)

[Claims] A connector terminal, a housing having a terminal stopper projecting inward from a side wall of a terminal accommodating chamber into which the terminal can be inserted from the rear and which limits the advancement of the terminal, and a spacer into which the terminal can be pushed into the housing. The housing is an assembled connector, and the housing includes a window in a side wall portion into which the spacer can be engaged, a guide slit extending parallel to the front following both sides of the window, and a tab-shaped tab sandwiched between the guide slits. The spacer includes a main body that can slide on the outer surface of the side wall of the housing, and a moving member that is provided below the main body and that can engage with the side edge of the window and the guide slit. An electrical connector comprising: a flexible arm that is provided substantially parallel to the lower part of the main body and that can be pushed by the lower surface of the tab-shaped wall to protrude into the terminal accommodating chamber; and a locking claw for engaging the housing. .