JP2907258B2 - Connector lock security member - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lock security member which constitutes a lock security mechanism for securing mating between connectors used for connection of electric wires and the like.

[0002]

2. Description of the Related Art As a conventional lock securing mechanism for a connector, Japanese Unexamined Utility Model Publication No. 1-165582 proposes a lock securing mechanism for a connector as shown in FIG. The lock security mechanism of the connector shown in FIG. 9 always mounts the lock security member M1 in _one of the housings in a temporarily engaged state in order to ensure the fitting between the male housing M and the female housing F. During fitting of the male housing M and a female housing F is moved from the lock ensuring member M ₁ is Karikakarigo position relative to the housing in the engaged position, the male, and prevents the displacement of the lock arm a for locking the female housing The two housings are kept locked.

When the male housing M and the female housing F are in a half-fitted state, as shown in FIGS. 10 and 11, the disengagement drive rod b provided on the female housing F is provided with a lock securing member. In order not to push up the flexible locking piece c of M ₁ , the free end c ₁ of the flexible locking piece c is brought into contact with the engaging projections d provided on both sides of the rising base of the lock arm a. It will not be able to push the lock ensuring member M ₁ to the male housing M. Accordingly, by checking the state where it can not push the lock ensuring member M _1, it can be detected that the two housings are incomplete state.

A lock security member M for the male housing M
_As shown in FIG. 12, the insertion of ₁ is performed by inserting the insertion rib f of the lock security member M1 into the security member insertion groove e of the male housing M. If there is play between the locking rib f and the insertion rib f, the lock securing member M ₁
Is easily tilt, even the two housings in a semi-fitted state, the lock ensuring the pressing force is applied to the member M ₁ is inclined lock ensuring member M ₁ is large, the disengagement driving rod b is flexible engagement despite the absence of effect of pushing up the locking pieces c, the free ends c ₁ of the resilient locking pieces c is disengaged from the engaging projections d will enters the lock security member M _1, the state of poor fit There is a possibility that a failure cannot be detected and a failure occurs.
When formed so as to contact the inserted rib f for eliminating the looseness between the security member insertion groove e and inserted rib f the security member insertion groove e, practical use insertion of the lock ensuring member M ₁ becomes difficult It has problems such as being impossible.

[0005]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and provides a lock security member which is useful for improving the reliability of the lock security mechanism of the connector and the productivity of the connector fitting process. The task is to provide.

[0006]

In order to solve the above problems SUMMARY OF THE INVENTION The present invention comprises a pair of female housing the terminal fittings on one of the male housing, displaceable via a rising base portion of the outer peripheral wall
A lock arm and a protective wall parallel to the lock arm ,
An engaging projection is provided on the side surface of the lock arm, and
A lock engaging portion to be engaged with the lock arm, drive for disengages
A moving rod is provided, and is inserted between the lock arm and the protection wall to a lock security member having an unlocking preventing portion that engages with the lock arm,
A flexible engagement piece having a tip abutting on the engagement projection at the temporary engagement position is provided, and when the female and male housings are fitted to engage the lock arm with the lock engagement portion, movable by disengagement drive rod releases the Karikakarigo the engaging protrusion of the movable Shiwagakari locking piece is displacement of the rising direction of the lock arm, then allowed to move the lock ensuring member A lock securing member in a lock securing mechanism for a connector , wherein a flexible locking piece is fully engaged with the engagement protrusion and the unlocking preventing portion is engaged with the lock arm ; rib
And inserting the insertion rib into the one housing.
A security member insertion groove is provided, and one surface of the insertion rib is provided.
Insertion direction leading end portion of the gap adjusting projections provided, the gap adjustment
The projection for securing is provided when the security projection is inserted into the security member insertion groove.
Having a height that makes sliding contact while being pressed against the member insertion groove,
The contact area with the security member insertion groove is formed in a small grain shape .

[0007]

Lock ensuring member of the effects of the present invention, since there is provided a gap adjustment protrusion in the insertion direction destination end of one surface of the flexible locking piece insertion rib, for inserting the security member insertion groove of the housing When inserting the rib, the protrusion for adjusting the gap inserts the security member
Sliding contact while pressing against the groove. Therefore, the lock securing member is stably held by the housing and does not tilt even when an external force is applied.
It is possible to reliably prevent the lock assurance member from entering the temporary engagement position or more when the female and male housings are in a half-fitted state without coming off, and to reliably prevent the occurrence of failure due to incomplete fitting between the housings. Can be. Also for gap adjustment
Since the protrusion has a small sliding contact area with the security member insertion groove,
The insertion resistance of the mounting ribs is not large, and
Can be .

[0008]

FIG. 1 is a perspective view showing a connector security mechanism using a lock security member A according to an embodiment of the present invention. The connector security mechanism includes a female housing F and a male housing M that constitute a pair of connector housings, and a lock security member A.

The female housing F has terminal fittings (not shown).
And a male housing M in front of it.
Is formed. A lock hole 2b as a lock engagement portion is provided at the center of the upper wall 2a of the body 2.
Are formed, and two disengagement driving rods 3 extending forward from the rear wall 2c by cantilever support are provided in the body 2. As shown in FIG. The engagement release drive rod 3 has a drive projection 3a at its free end, and acts on a security member A provided on the male housing M.

The male housing M has terminal fittings (not shown).
The base portion 5 which rises forward on the upper wall 4a of the main body portion 4 for housing
A lock arm 5 extending rearward through a is provided. A locking protrusion 5b is provided at an intermediate portion of the lock arm 5, and a detecting portion 5c is provided at a rear end thereof. On both sides of the lock arm 5, protection walls 6 parallel to the lock arm 5 are erected at intervals.

As shown in FIG. 2, a security member insertion groove 7 is provided at the rising portion of the protection wall 6 from the upper wall 4a.
When the female housing F and the male housing M are fitted,
The locking projection 5b of the lock arm 5 engages with the lock hole 2b to lock the connection between the female and male housings.

As shown in FIGS. 3 and 4, the lock securing member A has insertion ribs 9 on both sides of the lower end of a gate-shaped base 8, and one end of the base 8 has a lock arm 5 of the male housing M. The bifurcated flexible locking pieces 10, 10 located on both sides are provided for cantilever support. At the top of the base 8, an unlocking prevention portion 8a is provided to protrude from the upper side to prevent the detection portion 5c of the lock arm 5 from being fitted when the housing is fitted. Flexible locking piece 1
A driven tapered surface 10b is formed on the lower surface that is continuous with the zero free end 10a, and an engagement recess 10c is provided inside the middle of the driven tapered surface 10b. A detection projection 11 is provided upright at an intermediate portion between the base 8 and the flexible locking piece 10. End 9 of upper surface of insertion rib 9 on flexible locking piece 10 side
A is provided with a rice grain-shaped gap adjusting protrusion 12.

As shown in FIG. 5, the lock securing member A is
The insertion rib 9 is inserted and inserted into the security member insertion groove 7 of the protection wall 6 of the male housing M. The height of the gap adjusting projection 12 is formed so as to be in close contact with the upper wall 7a of the security member insertion groove 7, but since the contact area with the upper wall 7a is small, the contact resistance is small and the insertion can be easily performed. Therefore, there is no backlash between the gap adjusting projection 12 and the security member insertion groove 7, and even if an external force acts on the base 8 of the lock ensuring member A, the locking security member A is supported at the position of the gap adjusting projection 12. The lock securing member A does not tilt and does not adversely affect the position of the flexible locking piece 10.

FIGS. 6 to 8 are explanatory views showing the operation of the lock ensuring member A when the female housing F and the male housing M are fitted. First, as shown in FIG. 6, the lock securing member A is pushed in between the protective walls 6, 6 of the male housing M from the rear, and the free end 10 a of the flexible locking piece 10 is set at the base of the lock arm 5. is abutting the abutment surface 13b of the engagement projection 13 provided on both sides, contact Ku held in Karikakarigo state. When the female housing F and the male housing M are fitted in this state,
As shown in FIG. 7, the locking protrusion 5b of the lock arm 5 engages with the lock hole 2b, and the engagement release drive rod 3 provided in the female housing F is flexibly locked from below the engagement protrusion 13. Piece 10
Of the driven tapered surface 10a.
b to raise the free end 10a of the flexible locking piece 10;
Free movement of the flexible locking piece 10 from the abutment surface 13b of the engagement projection 13
Remove the end 10a .

When the lock assurance member A is pushed forward in this state, the detection protrusion 11 of the flexible locking piece 10 passes under the detecting portion 5c, and as shown in FIG. The concave portion 10c and the engaging projection 13 are engaged with each other to reach the full engagement position, and the mutual connection between the female and male housings F and M is ensured.

Since the gap adjusting projections 12 are provided on the insertion ribs 9 of the lock security member A shown in the above embodiment, the security member insertion grooves 7 and the insertion ribs 9 of the male housing M are provided.
There is no play between the female and male housings F, and the lock security member A is held in an extremely stable state.
Poor fitting in the fitting process of M is prevented beforehand. The shape of the gap adjusting protrusion 12 is not limited to the above shape, and may be a hemispherical shape, a semielliptical shape, or the like.

[0017]

As described above, the lock securing member of the present invention slides while being pressed against the securing member insertion groove at the tip of the insertion rib in the insertion direction.
The clearance adjusting projections at the contact height are provided, so that there is no play between the securing member insertion groove of the housing and the mounting rib, and failure due to incomplete fitting between the housings is ensured. Can be prevented, and the reliability of housing fitting is significantly improved . In addition, the gap adjustment projection is inserted with a security member
Since the contact area with the groove is formed in small grains,
The insertion resistance when inserting into the
This has the effect of facilitating and facilitating the work of inserting the security member.
You.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a connector security mechanism using a lock security member according to an embodiment of the present invention.

FIG. 2 is a perspective view showing a main part of the male housing of FIG. 1;

FIG. 3 is a side view of the lock security member of FIG. 1;

FIG. 4 is a plan view of the lock security member of FIG. 1;

FIG. 5 is an explanatory view showing a state where the lock security member of FIG. 1 is inserted into the male housing.

FIG. 6 is an explanatory view showing a state of temporary engagement between the lock ensuring member and the male housing of FIG. 1;

FIG. 7 is an explanatory view showing a step of fitting the male housing of FIG. 6 into the female housing.

8 is an explanatory view showing a state where the male housing and the female housing of FIG. 6 are fitted.

FIG. 9 is a perspective view showing a lock securing mechanism of a conventional connector.

FIG. 10 is a perspective view showing a temporary engagement state between the male housing and the lock security member of FIG. 9;

FIG. 11 is a cross-sectional view showing a temporary engagement state between the male housing and the lock security member of FIG. 10;

FIG. 12 is an explanatory view of a step of inserting an insertion rib of a lock security member into a security member insertion groove of the male housing of FIG. 11;

[Explanation of symbols]

 Reference Signs List A Lock security member F Female housing M Male housing 2b Lock hole 3 Disengagement drive rod 5 Lock arm 5a Rise base 5c Detector 7 Security member insertion groove 8a Unlock prevention part 9 Insertion rib 10 Flexible locking piece 10a Free end 11 Detection projection 12 Gap adjustment projection 13 Locking projection

Claims (1)

(57) [Claims] 1. A pair of female housing the terminal fittings on one of the male housing, and displaceable <br/> locking arm through the rising base portion of the outer peripheral wall, and a protective wall running parallel with the lock arm provided ,
A lock projection provided on a side surface of the lock arm, and a lock engagement portion that engages with the lock arm when fitted on the other side
When provided with a drive rod for disengaging, the lock ensuring member having unlocking preventing portion engaged with the lock arm, is inserted between the lock arm and protection wall, to Karikakarigo position
In this case, a flexible locking piece whose leading end contacts the engagement protrusion is provided.
When the female and male housings are fitted and the lock arm and the lock locking portion are engaged with each other, the disengagement drive rod moves the flexible locking piece in the rising direction of the lock arm. releasing the Karikakarigo the engaging projection by Displacement, then該解lock preventing unit with movable Shiwagakari locking piece by moving the lock ensuring member is present engages the engaging protrusion The lock assurance member in the lock assurance mechanism of the connector configured to engage with the lock arm .
A securing member insertion groove for providing an insertion rib on the lock securing member and guiding the insertion rib into the one housing.
The provided a gap adjustment protrusion provided on one surface of the insertion wear ribs, the gap adjusting protrusions is inserted into the said security member insertion groove
When sliding contact with the security member insertion groove
Having a small contact area with the security member insertion groove.
Lock security member of the connector, characterized in that it is formed.