JPS5936856Y2 - connector housing - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a connector housing, in which the female terminal accommodating chamber is particularly improved to prevent the female terminal from shaking.

As a conventional female terminal and a connector housing for accommodating the same, those shown in FIGS. 1 and 2 have been proposed.

That is, the female terminal A has a structure in which an electrical contact part A1 for the male terminal is connected to the front part of the board part 1, and an electric wire connection part A2 is connected to the rear part.

In the electrical contact part A1, a pair of elastic clamping arms 3, 3 are provided by curling the distal end extensions of the side plates 2, which are connected to each other upright on both sides of the base plate part 10, inwardly to form an inverted U-shape. In the electric wire connecting portion A2, a pair of conductor crimping pieces 4 and insulator crimping pieces 5 are provided for the electric wire, and the electric wire 6 is crimped and connected by the iron pieces 4 and 5.

On the other hand, the connector housing B is made of synthetic resin, and has a female terminal housing chamber I formed therein.

In the front half of the female terminal storage chamber I, a stepped portion 9 with a tapered shape 9a at the rear is provided along both sides of the ceiling wall 80,
A flexible locking arm 10 is provided between the stepped portions 9, 9 and extends diagonally downward to the front (left side of the mouth in FIG. 2).

Further, at the front opening end of the female terminal accommodating chamber I, projecting walls 12 and 12' are provided from the ceiling wall 8 and the bottom wall 8', respectively, so as to leave the male terminal insertion opening 11.

When the female terminal A is inserted into the rear opening end of the female terminal storage chamber I, it enters while bending the locking arm 10 upward, and when further pressure is applied, the front end of the electrical contact portion A1 is brought into contact with the projecting walls 12, 12'. At the same time, a locking arm 10 is attached to the rear end of the elastic clamping arms 3, 3.
The distal end portion 10a of the holder 10a is engaged with the holder 10a, and pulling out in the front-rear direction is inhibited by force.

In the case of the above configuration, the length t between the bottom wall 8' and the stepped portion 9 in the terminal receiving chamber I is set larger than the height h of the top of the elastic clamping arm 3 to allow for dimensional errors and elastic deformation of the arm 30. This also allows for easy insertion.

As a result, a gap V is created between the top of the elastic clamping arm 3 and the stepped portion 9, and the female terminal A is shaken vertically, resulting in the following problems.

That is, since t>h, the female terminal A is easily displaced in the vertical direction.

Therefore, as shown in FIG.
The male terminal C may be inserted obliquely as shown in Figure 3, causing the elastic clamping arm 3 to become stiff, or the excessive insertion force may damage the locking arm 10, rendering it unusable. There were some problems such as.

The present invention has been made to solve the above-mentioned problems.

That is, FIG. 4A1 shows an embodiment of the present invention, in which a protrusion 13 extending in the longitudinal direction is provided on the lower surface of the stepped portion 9 in the terminal accommodating chamber I.

The protrusion 13 has a substantially triangular cross section, and a tapered tip 13a is flexible and configured to be able to be elastically displaced from side to side.

Note that 14 is a punching hole formed in the protruding wall 12 facing the protruding ridge 13, but this may be omitted depending on the case.

According to the present invention, the female terminal A accommodated in the female terminal accommodation chamber I
As shown in the opening of FIG. 4, the protrusion 13 that elastically retains and contacts the outer periphery of the elastic clamping arm 3 over its entire length always presses it toward the bottom wall 8', so that no wobbling occurs.

Therefore, as shown in Figure 3A, the female terminal A may be tilted, making it difficult to insert the male terminal, or the male terminal C may be tilted as shown in Figure 3A.
Even if the electric contact part A1 is inserted obliquely, the inclination of the electric contact part A1 is suppressed, thereby preventing the elastic clamping arm 3 from twisting and the locking arm 1
0 damage can be prevented.

The above description has been made of the case where the protrusions 13 are provided on the step portions 9 on both sides of the ceiling wall 8, but the protrusions 13 elastically engage and contact the elastic clamping arms 3 and are always pressed against the bottom wall 8' side. It is easily understood that the conventional step portion 9 may be omitted and provided directly on the ceiling wall 8 as long as the structure is adopted.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing a conventional example of a female terminal, Fig. 2 shows a conventional example of a connector housing, A is a front view thereof, the mouth is a sectional view taken along the line X-X, and Fig. 3 A is a sectional view taken along line X-X. The openings are explanatory diagrams showing the usage state of the conventional example, and FIG.
The mouth is a cross-sectional view taken along the Y-Y line. A-...Female terminal, B...Connector...Using, 1...Terminal housing chamber, 8...Ceiling wall, 8'-... Bottom wall, 10...Latching arm,
11...--Male terminal insertion port, 12゜12'...
...Protruding wall, 13...--Protruding ridge.

Claims (1)

[Scope of utility model registration request] A flexible locking arm 10 is provided on the ceiling wall 8 of the terminal accommodating chamber I, and a projecting wall is provided at the front opening end of the terminal accommodating chamber I so as to leave a male terminal insertion opening 11 in the ceiling wall 8 and the bottom wall 8'. 12,1
2', and the front and rear ends of the electrical contact part A1 of the female terminal A are engaged with the projecting walls 12 and 12' and the locking arm 10, respectively, to prevent it from being pulled out in the front-back direction. The connector housing B is characterized in that a protrusion 13 is provided on both sides of the ceiling wall 8 in the longitudinal direction and elastically engages and contacts the electrical contact portion A1 of the female terminal A. ... Uzing.