JPH021024Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to an improved connector housing for accommodating two rows of terminals, and particularly to an improved housing that is more compact.

Conventional technology Conventionally, as a small connector with a simple structure, easy assembly, and high reliability, a terminal receiving chamber into which a connector terminal is inserted from the rear is provided, and a terminal stopper protruding inward at the front end of the chamber and a terminal into which the terminal is inserted are provided. Those using a housing equipped with a flexible terminal locking arm to prevent the retraction of the
A connector disclosed in Japanese Patent No. 30270 is known.

Furthermore, connectors in which a plurality of such terminals are arranged horizontally or stacked vertically and housed in one housing are also known. For example, two layers of terminal accommodating chambers are arranged back to back in one housing, and a terminal stopper is provided at the front end of each terminal accommodating chamber to stop the forward movement of the inserted terminal. Some connectors are provided with locking arms that protrude from the boundary walls of the storage chambers into the respective terminal storage chambers to stop the terminals from retreating. The locking arm provided on this connector housing is pushed toward the boundary wall when the terminal is inserted from the rear of the terminal storage chamber, and when the terminal reaches a predetermined position, it returns to its original position and locks. The engaging jaw at the tip of the stop arm engages the rear end of the terminal,
It functions to prevent the terminal from slipping out backwards. Since the locking arm is pushed and bent in this way, it is necessary to provide a bending space at the rear of the back surface. However, in the above-mentioned known connector housing, in order to achieve miniaturization, the boundary between the two terminal accommodating chambers is The locking arms are provided symmetrically from the wall, and the boundary wall portion behind the two locking arms is removed to create a flexible space.

However, as electronic device technology advances, requirements for electrical connections have become more sophisticated, and demands for miniaturization of connectors with multiple pins have also become stronger.

Problems to be Solved The present invention is an attempt to improve the housing of the connector having the above-mentioned structure, and to meet the demand for miniaturization of the connector with multiple pins.

Means for Solving the Problems The present invention provides a further miniaturized connector housing to achieve the object, and the housing has two layers of terminal accommodating chambers into which connector terminals can be inserted from the rear. The terminal is provided with a terminal stopper that is arranged symmetrically on the boundary plane and protrudes inward from the front end of the terminal accommodating chamber, and a terminal locking arm that is formed back to back without a partition from the boundary position of the terminal accommodating chamber. This is a small housing in which the terminal locking arms have mutual deflection allowance by cutting the back surface of the locking arm obliquely to the boundary surface so that one side is thin and the other side is thick.

A more detailed explanation will be given below with reference to the drawings.

Figure 1 shows a conventional two-layer connector.
Terminals 3 and 3' are inserted into the housing 1 from the rear. A terminal stopper 6 is provided at the front end,
Further, terminal locking arms 4, 4' are formed back to back to prevent the terminal from coming off backward from the boundary wall 7 separating the two terminal accommodating chambers 2, 2', and are symmetrical about the boundary surface as a whole. There is. When the terminal 3 is inserted from the rear (left side) of the terminal storage chamber 2, the terminal locking arm 4 is pushed down by the terminal 3 and bends downward, and when the terminal is stored in the predetermined position, the terminal locking arm 4 The engaging jaw 5 at the tip comes to engage with the rear end of the terminal locking part. Therefore, a bending allowance X is provided between the terminal locking arms 4 and 4' which are provided back to back.

As shown in FIG. 2, the housing of the present invention is an improved version of the above-mentioned housing, and has two terminal accommodating chambers 11 and 11' provided inside the housing 10. Terminal locking arms 13, 13' are formed back to back.
The terminal locking arms 13, 13' in the present invention are
Unlike the terminal locking arms 4, 4' in the prior art, which are formed to have an essentially uniform thickness, the terminal locking arms 4, 4' are formed on the back so that the left and right sides have different thicknesses. The upper and lower parts are cut diagonally to the upper and lower boundary surfaces. FIG. 3 shows a comparison between the terminal locking arm portion of the housing of the present invention and the conventional housing, and the deflection Y between the back surfaces of the terminal locking arms 13 and 13' is the same as that of the conventional housing. Since the deflection allowance is set to be equal to X, it is possible to reduce the distance Z between the peaks of the terminal locking arms while maintaining the same deflection rigidity of the terminal locking arms, resulting in a smaller housing. It is what was done.

Effects of the invention The compact connector housing of the present invention is functionally equivalent to the conventional housing with two layers of terminal accommodation chambers, but has succeeded in making it smaller and further reduces weight. At the same time, materials can be saved and it is economically advantageous.

[Brief explanation of the drawing]

FIG. 1 shows a connector housing according to the prior art, in which a shows a cross-sectional view, b shows a front view, and FIG.
1 shows a small connector housing according to the present invention, in which a is a sectional view and b is a front view. FIG. 3 is an enlarged explanatory view of the terminal locking arm part in the housing, -A and -B are respectively a front view and a perspective view of the arm part in the present invention, and -A and -B
1A and 1B are a front view and a perspective view, respectively, of an arm portion in the prior art. 1... Housing, 2, 2'... Terminal housing chamber,
3, 3'... terminal, 4, 4'... terminal locking arm,
X...Deflection, 10...Housing, 11,1
1'...Terminal housing chamber, 12, 12'...Terminal, 1
3,13'...Terminal locking arm, Y...Deflection allowance,
Z...Distance between the tips of the terminal locking arms.

Claims (1)

[Scope of utility model registration request] Terminal accommodating chambers into which connector terminals can be inserted from the rear are provided in two layers and symmetrically on the boundary surface, and a terminal stopper protrudes inwardly from the front end of the terminal accommodating chamber and a partition wall replaces the terminal accommodating chamber from the boundary position. In a connector housing equipped with terminal locking arms formed back to back, the back surface of the terminal locking arm is shaved obliquely to the boundary surface so that one side is thin and the other side is thick. A small connector housing characterized in that the terminal locking arms are provided with a mutual deflection allowance.