JP2512066Y2 - connector - Google Patents

Description

[Detailed Description of the Invention] [Industrial application] The present invention relates to a connector, and more specifically, to a connector for locking the terminal insertion posture in the terminal housing chamber of the connector housing to prevent the connector from coming off. The present invention relates to a terminal locking mechanism.

"Prior Art" The connector is provided with various terminal locking means for preventing the terminal inserted in the terminal housing chamber of the connector housing from coming off by an external force during use. Among them, a resin cantilever elastic locking piece formed on the terminal accommodating chamber side is engaged with the locking portion of the terminal, or a metal locking lance formed on the terminal side is connected to the terminal. Many locking means for engaging with the locking portion of the storage chamber are adopted.

The locking means using the elastic locking piece and the locking lance has a single point for locking the terminal, and therefore a single elastic locking piece or the like lacks locking stability.
No. 8 or Japanese Utility Model Laid-Open No. 59-21582, a cantilevered elastic locking piece and a locking lance may be combined, or a plurality of them may be combined to form a structure above the terminal. There is a double locking structure that is arranged downward to improve and stabilize the terminal locking force.

[Problems to be solved by the device] Generally, the connector may pull out the terminal in the terminal accommodating chamber due to incorrect insertion of the terminal, etc., and insert the dissociation tool from the rear of the terminal accommodating chamber to engage the terminal. The terminal is pulled out by removing the elastic locking piece and the locking lance.
However, in the connector of the double locking structure described above, there is little play around the terminals in the terminal accommodating chamber, and in addition, the elastic locking pieces and locking lances arranged in the upper and lower parts are simultaneously removed by the two disengagement tools. Since it is necessary to disengage the terminals and pull out the terminals in the state of simultaneous disengagement, the work of pulling out the terminals becomes extremely complicated and there is a practical problem that requires considerable skill.

The object of the present invention is to eliminate the above-mentioned disadvantages of the conventional means.

[Means for Solving the Problems] The present invention provides a dual locking structure of a terminal by a plurality of arrays of elastic locking pieces or locking lances of a cantilever, and excessive locking based on the double locking structure. The basic idea is to relax the force within a practically permissible range and to improve the withdrawal property of the terminal according to the degree of relaxation, and it is composed of the following points.

“In a terminal housing chamber of a connector housing, an elastically flexible cantilever-shaped first elastic locking piece and a second elastic locking piece are internally provided integrally with a peripheral wall of the terminal housing chamber. Elastic locking pieces are arranged above and below the terminals of the terminal accommodating chamber, the free end portions of the free state engage behind the locking portions of the terminals, and The locking piece and the terminal side locking part are
While engaging through the inclined engaging portion, the inclined engaging portion is configured such that "in the disengaged state of the first elastic locking piece from the terminal, the second elastic pulling force is applied to the second elastic locking piece by an external terminal pulling force by normal manual pulling. A connector having a terminal locking mechanism formed on the free end portion of the elastic locking piece so as to have an inclination degree that generates an elastic displacement component force in the engagement and disengagement direction ".

[Operation] In the connector of the present invention having the above configuration, the first elastic locking piece and the second elastic locking piece are provided on the upper and lower sides of the terminal in the terminal accommodating chamber. Since the elastic locking piece engages with the terminal via the inclined engaging portion, the first elastic locking piece functions as a main terminal locking mechanism for accurately preventing the terminal from coming off, and The second elastic locking piece that engages with the terminal through the terminal functions as a subordinate terminal locking mechanism that has both a force-preventing force for preventing the terminal from coming off due to the engaging force and a property for engaging and disengaging the terminal due to the external force withdrawing the terminal. However, it has a function of sharing the terminal locking force necessary for practical use and the corresponding terminal removal allowance.

When it is necessary to pull out the terminal due to incorrect insertion of the terminal or the like, a dissociation tool is inserted from the rear of the terminal accommodating chamber to disengage the engagement between the first elastic locking piece and the terminal. When a normal manual pulling force is applied to the terminal as it is, the second elastic locking piece is elastically displaced and disengages from the locking portion by the elastic displacement component force based on the inclined engaging portion, The terminal can be easily pulled out.

"Example" Hereinafter, a detailed description will be given based on examples. First, referring to FIG. 1 showing an embodiment of the present invention, a female connector housing 1 having a female terminal 3 inserted into a terminal accommodating chamber 5 and a male terminal 4 are shown.
In the connector including the male connector housing 2 in which the terminal accommodating chambers 5 are inserted,
A first cantilever shape that is elastically flexible in the outward direction of the terminal accommodating chamber 5.
The elastic locking piece 6 and the second elastic locking piece 7 are internally provided integrally with the peripheral wall of the terminal accommodating chamber 5, and the first and second elastic locking pieces 6 are provided.
7 are arranged above and below the female terminal 3 and the male terminal 4.

The free end of the first elastic locking piece 6 is accurately engaged with the rear end of the locking portion 8A provided on the terminals 3 and 4, and the free end 9 of the second elastic locking piece 7 is connected to the terminal. Locking part 8B provided on 3.4
A terminal locking mechanism having a double locking structure is formed which engages with the rear end to prevent the terminals 3 and 4 from coming off.

Then, the free end 9 of the second elastic locking piece 7 becomes a locking end surface 12 that is substantially orthogonal to the terminal surface 11 of the terminals 3 and 4 as shown in FIG. The end has an acute inclination angle θ ₁ with respect to the terminal surface 11 and is inclined and raised.
Is formed. The inclination angle θ ₁ of the inclination engaging portion 10 is such that when the pulling external force F ₁ is applied to the terminals 3 and 4,
At the engagement point 15 of the second elastic locking piece 7 and the inclined engagement portion 10,
In the disengaged state between the first elastic locking piece 6 and the locking portion 8A, a reaction force F ₂ for preventing the terminals 3 and 4 from coming off is generated, and a "normal operator" of the connector housing is When "normal pulling external force by manual pulling" F ₃ is given to 4,
The angle at which the outward elastic displacement component F ₄ of the arrow shown in the figure is generated at the free end 9 is adopted (the inclination angle θ _{1 in} this embodiment is approximately
60 °). In addition, reference numeral 14 in the drawing denotes a guide inclined portion when the terminal is inserted.

In the connector of the embodiment shown in FIG. 1 having the above-described structure, the first elastic locking piece 6 is the "main terminal locking mechanism", the second elastic locking piece 7 is the locking force of the F ₂ and the F ₃ It acts as a “subordinate terminal locking mechanism” that has disengagement due to the forced bending force, and the two-point locking force of the first and second elastic locking pieces 6 and 7
The locking force required for practical use as a connector housing is secured.

When it is necessary to pull out the terminals 3 and 4 due to erroneous insertion or the like, as shown in FIG.
When the first elastic locking piece 6 and the engaging portion 8A are disengaged from each other and a pulling force of F ₃ is applied in that state, the second elastic locking piece 7 is elastically displaced by an external force. , (Because there is a gap on the back surface of each second elastic locking piece 7 before the female and male connector housings 1 and 2 are fitted together, elastic displacement to the outside is freely possible) That is, the engagement with the locking portion 8B is released, and the terminals 3 and 4 are easily pulled out.

Then, if necessary, an outward deflection preventing tongue piece 16 of the second elastic locking piece 7 of the male connector housing 2 is provided at the front end of the female connector housing 1 so that the male and female connector housings 1 and 2 fit together. At this time, the fitting portion peripheral wall 17 of the male connector housing 2 is fitted to the back portion of the second elastic locking piece 7 of the female connector housing 1, and the outward deflection preventing tongue piece 16 is set to the second elastic locking piece of the male connector housing 2. Since each of the second elastic locking pieces 7 functions as a rigid beam because it is fitted to the back of the locking piece 7, the elastic displacement component force F ₄ is generated, so that the locking force of the terminal is improved. The function of preventing the terminal from coming off by the second elastic locking piece 7 becomes stable.

Next, another embodiment of the present invention shown in FIGS. 2 and 3 will be described. The second and third embodiments are the connectors having the same first elastic locking piece 6 and the second elastic locking piece 7 as those of the first embodiment, but the aspect of the inclined engaging portion 10 is changed. Is. That is, the inclined engagement portion 10 shown in FIG. 2 forms the inclined engagement portion 10 having the inclination angle θ ₁ at the free end 9 of the second elastic locking piece 7, and the rear end of the engagement portion 8B is connected to the terminal. The vertical engaging portion 13 that is substantially vertical to the surface 11 is provided, and the vertical engaging portion 13 of the locking portion 8B and the second engaging portion
The structure is such that the inclined engaging portion 10 on the elastic locking piece 7 side is engaged.

Further, the third one shown in the figure shows the engaging portion 8B and the second elastic engaging piece 7.
In this structure, the free ends 9 of the are formed into inclined engagement portions 10 having an inclination angle of θ ₁ and are in surface contact with each other.

The second elastic locking piece 7 of the embodiment shown in FIGS.
The same effect as in the illustrated embodiment exists.

[Advantages of the Invention] As described above, the connector of the present invention is a dual terminal locking mechanism consisting of the first elastic locking piece and the secondary terminal locking mechanism shown in FIG. In addition to having a locking mechanism, the subordinate terminal locking mechanism has a matching matching locking force and matching terminal removal allowance, so the terminal locking performance and terminal removal performance of the appropriate quality necessary for practical use as a connector are provided. There is an effect that the practical quality of the connector is improved by combining the performances, and the conventional terminal drawing work which is complicated and requires skill is extremely simplified and the workability is improved.

[Brief description of drawings]

FIG. 1 shows a connector according to an embodiment of the present invention, (A) is an overall front view thereof, (B) is a partially enlarged front view thereof, and (C) is a front view showing its operating state, FIG. 3 is a front view showing a second elastic locking piece and an inclined engaging portion according to another embodiment of the present invention. Main symbols, 1: female connector housing, 2: male connector housing, 3: female terminal, 4: male Terminal, 5: terminal accommodating chamber, 6: first elastic locking piece, 7: second elastic locking piece, 8A8B: locking portion, 9: free end, 10: inclined engaging portion, 11: terminal surface, 12 : Locking end face, 13: Vertical engagement part, 15: Engagement point, 16: Outer flexure prevention tongue, 18: Disengagement tool

Claims (2)

(57) [Scope of utility model registration request] 1. A cantilever-shaped elastically-flexible first elastic locking piece and a second elastic locking piece are integrally provided in a terminal housing chamber of a connector housing integrally with a peripheral wall of the terminal housing chamber. , Etc. 2
The individual elastic locking pieces are arranged on the upper side and the lower side of the terminals of the terminal accommodating chamber, and the free end portions in the free state engage behind the locking portions of the terminals. The elastic locking piece and the terminal side locking part are engaged with each other via the inclined engaging part, and the inclined engaging part is A structure having a terminal locking mechanism formed at a free end portion of the second elastic locking piece with an inclination degree that produces an elastic displacement component force in the engagement disengagement direction by an external force for pulling out the terminal by manual extraction. Connector to be. 2. A connector according to claim 1, wherein one connector housing having a first elastic locking piece and a second elastic locking piece is fitted with the other connector housing. The connector according to claim 1, wherein an elastic deflection preventing tongue piece that is fitted into the connector is projectingly provided at a front end of the other connector housing.