JPH0782887B2 - Connector terminal incomplete insertion prevention structure - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an incomplete terminal insertion preventing structure for a connector, which is capable of detecting incomplete insertion of a terminal by inserting a bending preventing spacer for a terminal locking arm into a connector housing. is there.

[0002]

2. Description of the Related Art FIG. 8 is a vertical sectional view showing a conventional connector. The connector has connector housings 27, 2
7'is provided with a terminal locking step 29, 29 'on one side wall of the terminal accommodating chamber 28, 28', and flexible locking arms 30, 30 'are provided on the other side wall facing the one side wall. It is provided so as to project into the terminal accommodating chambers 28, 28 '. Due to the two-pole terminal locking structure, the locking arms 30 and 30 'are formed in a substantially U shape, and the locking arms 30 and 30' are wedge-shaped with respect to the U-shaped inner wall portions 31 and 31 '. Spacer 3
It has a structure in which 2, 32 'are inserted.

The steps 29, 29 'have terminals 33,
After engaging 33 ', the spacers 32, 32' are fitted. Then, by fitting the male and female connector housings 27 and 27 'to each other, the spacers 32 and 32' are pressed against each other and deeply inserted into the U-shaped inner wall portions 31 and 31 'of the locking arms 30 and 30'. Pushed in. As a result, the terminals 33, 33 'are strongly pressed against the locking arms 30, 30', and the terminals 33, 33 'are prevented from coming off.

However, in the above-mentioned conventional structure, when the terminals 33, 33 'are not securely inserted into the locking step portions 29, 29' in the terminal accommodating chambers 28, 28 ', the spacers are formed. Since the locking force due to 32, 32 'does not act, the terminals 33, 3 when pulling the wires 34, 34'
There is a problem that the 3'is removed from the terminal accommodating chambers 28, 28 '.

[0005]

SUMMARY OF THE INVENTION In view of the above problems, it is an object of the present invention to provide an incomplete terminal insertion preventing structure for a connector, which can prevent incomplete insertion of the terminal when the connector is assembled.

[0006]

To achieve the above object of the Invention The present invention is, in the connector housing is provided with a flexible terminal retaining arms facing the terminal insertion chamber, the terminal locking arm
A terminal having a protrusion located on the side of the
In a connector in which a bending prevention spacer for the terminal locking arm is inserted into the connector housing from a direction opposite to the terminal insertion direction, the terminal locking arm is opposed to the inner wall of the terminal accommodating chamber and is locked to the terminal. provided dug a stepped portion, the collision in a state in which the terminal is not engaged with the engaging ledge portion
An incomplete terminal insertion preventing structure of a connector is adopted in which an abutting portion facing the protruding portion in the spacer insertion direction is provided so as to protrude from the deflection preventing spacer.

[0007]

[Action] When the insertion of the terminals is incomplete, abutting portions of the spacer during the spacer insertion presses the protruding portion of the pin pushes the pin from the terminal accommodating chamber. Thus the operator can detect <br/> terminal insertion incomplete visually. Also, the terminals are completely inserted.
If so, the terminal is locked by the terminal locking arm while being locked.
Engage in. When the terminal is lowered one step, the spacer sticks out.
The contact portion passes over the protruding portion of the terminal without interference.

[0008]

1 is an exploded perspective view showing an embodiment of a structure for preventing incomplete insertion of terminals of a connector according to the present invention, and FIG. 2 is a perspective view showing a state in which a spacer is temporarily engaged with a connector housing. is there. In FIG. 1, reference numeral 1 denotes a temporary locking projection 5 provided on one side wall 4 ₁ located substantially at the center of an inner peripheral wall 2a constituting the terminal accommodating chamber 3 of the connector housing 2, and 5 denotes a side wall 4 ₁ The protrusion for main locking provided in the other side wall 4 which opposes is shown. The two locking projections 1 and 5 each have an inclined surface 7 facing the insertion direction A of the bending prevention spacer 6 with respect to a terminal locking arm 9 described later, and are separated by an appropriate distance L.

In the inner peripheral wall 2a of the connector housing 2, a terminal locking arm 9 is provided above the pair of terminal accommodating chambers 3,3.
To form the sky guide portion 8 which communicates with the deformation space 36, between the pair of side walls 4 _1, 4 _2, and a central guide portion 8 that communicates perpendicular to the center of the upper air guide section 8 There is. The upper wall 12 of the spacer 6 made of synthetic resin is inserted into the sky guide 8, and the frame 13 is also inserted into the central guide 16. The spacer 6 is inserted and temporarily locked in the connector housing 2 from a direction opposite to the terminal insertion direction before the terminal is inserted, and is pushed and permanently locked after the terminal is inserted.

The spacer 6 is for pushing contact which can enter the inside of the locking arm 9 along the inner side surface 10 of the flexible terminal locking arm 9 provided on the upper part of the inner peripheral wall 2a of the housing 2. A protruding wall 11 is formed so as to protrude toward one end of the spacer upper wall portion 12, and a frame body 13 is formed in a hanging manner at the center of the upper wall portion 12. Here, the front pillar portion 14 of the frame portion 13 functions as a locked portion for the temporary locking projection 1 of the housing 2, and the rear pillar portion 15 functions as a locked portion for the main locking projection 5. . Both of the locked portions 14 and 15 are provided so as to flexibly fit into the locking projections 1 and 5 provided on the opposite side wall surfaces 4 ₁ and 4 ₂ , and the temporary locking projections. 1 so that the locked portion 14 for 1 does not interfere with the main locking protrusion 5 near the entrance of the central guide portion 16 of the connector housing 2.
Opposite side surfaces 14 ', 1 of the two pillar portions 14, 15 on the side where the projections pass over.
5'is cut out symmetrically with a dimension t of about half the plate thickness of the frame body portion 13.

Further, the spacer 6 has a corner-shaped abutting portion 1 protruding in the longitudinal direction on the side of the pressing wall 11 for pressing.
7 is integrally formed. The abutting portion 17 is provided with respect to an upper edge protruding portion 19 (also serving as a rotation prevention guide at the time of inserting the terminal) formed by cutting and raising the upper wall portion of the hollow quadrangular female terminal 18 on both side walls. The terminal 18 is set so as to abut in a state (incomplete insertion) in which the terminal 18 is not engaged with the locking step portion (20 in FIG. 3) provided in the terminal accommodating chamber 3. The locking step portion 20 is formed by digging the bottom wall 35 of the terminal accommodating chamber 3 in parallel with the terminal insertion direction from the vicinity of the terminal insertion opening.

As shown in FIG. 2 which is a perspective view showing a temporary locking state of the spacer 6, and FIG.
The front pillar portion 14 of the is a projection 1 for temporary locking of the connector housing 2.
And is connected to the connector housing 2 with a floating distance H (FIG. 4). Here, the floating end 21 of the spacer 6
Is set so as to be substantially flush with the terminal housing chamber outer wall end 22 of the connector housing 2 in the state of being retracted in the insertion direction side, so that unexpected pushing of the spacer 6 from outside (main locking) is prevented. It

Further, FIG. 3 is a vertical sectional view showing the spacer 6 in a fully locked state, and FIG.
8 is engaged with the locking step portion 20 in the terminal accommodating chamber 3 (at the step of inserting the terminal, the upper edge protruding portion 19 of the terminal 18).
Pushes the abutting portion 17 of the spacer 6 to move the spacer in the terminal insertion direction within the free range), and the spacer 6 is pushed in by a pressing jig (not shown) or the like, the pushing wall 11 of the spacer 6 is flexible. The locking arm 9 is fitted along the inner surface 10 and the locking arm 9 is pressed toward the terminal to lock the terminal 18.

In this state, the spacer 6 is pushed in as shown in FIG. 5, whereby the rear pillar portion 15 rides over the main locking projection 5 on the inlet side of the central guide portion 16 of the connector housing 2, and the front pillar portion 14 is guided to the end portion of the guide. While hitting 23, the rear end surface 24 of the rear column portion 15 abuts on the vertical surface 25 of the main locking projection 5 to obtain the main locking state.

Next, the means for detecting incomplete terminal insertion according to the present invention will be described. That is, as shown in the state in which the terminal insertion is incomplete in FIG. 6, the terminal 18 does not engage with the locking step portion 20 in the terminal accommodating chamber 3 and is located in the terminal accommodating chamber 3 more than the normal position (see FIG. 3). Located above. Then, as the spacer 6 is inserted, the abutting portion 17 of the spacer 6 comes into contact with the upper edge protruding portion 19 of the terminal 18 to push the terminal 18 out of the terminal accommodating chamber 3 as shown in FIG. Therefore, the operator can easily detect the imperfect insertion of the terminal 18 by visually confirming the displacement of the rubber plug 26 protruding with the electric wire.

[0016]

As described above, according to the present invention, the terminal
If the terminal is not completely inserted into the chamber, the spacer
Since the protruding butting part pushes the protruding part of the terminal and pushes the terminal out of the connector housing , it is easy to find incomplete insertion of the terminal when assembling the connector, and it is in use.
The terminal is prevented from coming out and contact failure is prevented.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of a main part showing an embodiment of a structure for preventing terminal incomplete insertion of a connector according to the present invention.

FIG. 2 is a cutaway perspective view showing a state where a spacer is temporarily locked to a connector housing.

FIG. 3 is a vertical cross-sectional view showing the spacer in a final locked state.

FIG. 4 is a transverse cross-sectional view showing a temporarily locked state of the spacer.

FIG. 5 is a transverse cross-sectional view showing a state where the spacers are fully locked.

FIG. 6 is a vertical cross-sectional view showing the action of the spacer when the terminal is not completely inserted.

FIG. 7 is a vertical sectional view showing a state in which the spacer pushes out the terminal.

FIG. 8 is a vertical sectional view showing a conventional example.

[Explanation of symbols]

 2 connector housing 3 terminal accommodating chamber 6 spacer 9 terminal locking arm 17 abutting portion 18 terminal 19 upper edge protruding portion 20 locking step portion 35 bottom wall

Claims (1)

[Claims] To 1. A connector housing is provided with a flexible terminal retaining arms facing the terminal insertion chamber, the terminal locking arm
A terminal having a protrusion located on the side of the
In a connector in which a bending prevention spacer for the terminal locking arm is inserted into the connector housing from a direction opposite to the terminal insertion direction, the terminal locking arm is opposed to the inner wall of the terminal accommodating chamber and is locked to the terminal. provided dug a stepped portion, the collision in a state in which the terminal is not engaged with the engaging ledge portion
A structure for preventing incomplete insertion of a terminal of a connector, characterized in that an abutting portion in the spacer insertion direction facing the projecting portion is provided so as to project from the deflection preventing spacer.