JP2710781B2 - Electrical connector with double lock - Google Patents

Description

Description: FIELD OF THE INVENTION The present invention relates to an electrical connector having a double lock, and more particularly to a first lock of a contact provided in a contact mounting cavity in a housing. In addition to the means, a member formed separately from the housing has a second contact with the contact.
And the connector further comprising means for preventing backlash of the contact.

(Prior Art and Problems Thereof) Conventionally, an electric connector having a double lock of this type is frequently used in, for example, an electric component of an automobile. Various types of locking means for the contacts provided in the cavity for mounting the contacts in the housing are known, and various types of locking means provided on a member formed separately from the housing are also known. Things are known.

The second lock means includes a member provided with a lock function on a member connected to the housing via a hinge;
It is known that a member formed separately from the housing is provided with a lock function, and in the latter, an insulation hole of a contact is formed by forming a long hole in the housing and inserting a comb-like member from the long hole. Pressing and forming a long hole in the housing, while adding a stabilizer to the contact,
It is known that a comb-shaped member having the stabilizer press is inserted from the long hole and pressed.

However, in the hinge type, there is a problem that the lock is uncertain due to the loss of the hinge portion and the formability is unstable. In the case of the barrel press type, if the wire is bent or entangled, there is a problem that the comb-like member cannot be inserted and workability is poor. In the stabilizer holding type, there is a problem that the pressing operation of the contact becomes uncertain.

On the other hand, conventionally, as the backlash preventing means, there is a device using the comb-shaped member. However, a clearance is generated between the backlash preventing portion of the member and the contact, or the preventing portion is damaged. And its functions are insufficient.

SUMMARY OF THE INVENTION An object of the present invention is to provide a connector having a novel double lock which can solve the above-mentioned problem at a stroke by relatively simple means.

(Means for Solving the Problems) In an electrical connector having a double lock according to the present invention, a cavity for receiving a contact having a stabilizer protruding from the lower surface, and a cavity provided on an inner wall of the cavity other than the stabilizer. A first engaging part of the contact
A housing having locking means, a cavity in which the contact is inserted, and a second locking means for contacting the stabilizer to prevent the contact from retreating, and slidably inserted into the housing. A lock case, wherein the housing and the lock case are temporarily fixed means for temporarily fixing the lock case to the housing when the lock case is inserted into the housing to a first position; and A locking means for locking the lock case to the housing when the lock case is moved to the movement end position; and a second lock portion on a surface higher than the first position, the lock case being entirely moved as the lock case moves.
And a moving means for moving the lock case to the second position, wherein the second lock means contacts the stabilizer only when the lock case is moved to the second position by the moving means.

Further, in the connector according to the present invention, the lock case has a lance for preventing backlash of the contact in an insertion contact area of the contact. The housing has a rib for forcibly pushing the lance into the insertion contact area of the contact so as to press the lance against the contact.

(Embodiment) In FIGS. 1 to 3, a housing 1 made of a plastic material has a plurality of cavities 2 arranged to mount contacts, which will be described later, and a plurality of cavities 2 in a bottom plate 3 near a front end of the housing. Temporary stop hole 4, an anti-floating projection 7 of a lock case described later on the inner surface of a partition 6a connected to the upper plate 5 near the front end, a guide groove 9 on both side plates 8, and locking of the both side plates. A hole (or recess) 10. Floating prevention projection 7
Although not shown, has a slope at the rear end. The guide groove 9 is formed on a stepped surface having a rear portion higher than the above through the slope portion 9a.

On the other hand, the lock case 11 made of a plastic material is
A plurality of cavities 12 and a bottom plate 3 of the housing 1;
It is formed in a size and shape to be slidably inserted between the partition 6 and both side plates 8. Further, the lock case 11 includes a temporary fixing protrusion 14 on the lower surface of the bottom plate 13 for engaging with the temporary fixing hole 4, and a guide groove 16 slidably inserted into the floating prevention protrusion 7 on the upper plate 15 at the front end opening. A sliding projection 17 slidably engaged with the guide groove 9 on the outer surfaces of both side plates, and a locking projection 10 on the both side plates when the lock case is completely inserted into the housing 1. It has a mating locking projection 18 (final fixing means) and a guide groove 19 into which the partition plates 6b arranged on both sides of the partition 6 are slidably inserted. The temporary fixing projection 14 has a slope portion 14a,
The guide groove 16 has a slope 16a. In FIG. 3, a high step surface portion 20 is formed at a bottom plate 3 of the housing 1, that is, at a substantially central portion of the bottom surface of the cavity 2 via a slope portion 20a. At the rear end of the stepped surface portion 20, a lock lever projection 21 (first locking means) for a contact, which will be described later, is integrally and continuously provided, and the lever is engaged with a slope portion 21a at a front portion and at a rear portion. An end surface 21b is provided, and elasticity in the up-down direction is provided with a continuous portion with the step surface portion as a base point. At the rear end of the lock lever 21, a stopper for the stabilizer of the contact
22 are integrally connected. The stopper 22 has a bent portion 23 at the rear end. The housing 1 is provided with a stepped surface portion 20, a lock lever 21 and a stopper 22, and has a partition upper plate 3 'which performs the same function as that of the bottom plate 3 at that point. Bent part forming the rear end opening
With 24.

As shown in FIGS. 2 and 4, in the connector of the present invention having the above-described configuration, the lock case 11 is provided on the housing 1, and the tip 13 a of the bottom plate 13 of the lock case 11 is provided on the slope of the bottom plate 3 of the housing 1. Insert until it contacts the part 20a. Of course, at this time, the distal end 15a of the upper plate 15 of the lock case 11 also comes into contact with the slope 20a of the partition plate 3 'of the housing 1, but the relationship between them will be omitted below. When inserted in this manner, the sliding projection 17 engages with the guide groove 9 and the temporary fixing projection 14 fits into the temporary fixing hole 4.
(Temporary fixing means) is engaged with the lock case 1
Is temporarily fixed to the housing 1. Under this temporary fixing state, the contact 26 is inserted into the cavity 2 of the housing 1 from the front end opening of the lock case 11. The contact 26 has a front end formed in a hollow shape, an electric wire 27 is crimped and connected at the rear end, and a stabilizer 26a protruding from the lower surface and a locking hole 26b opening on the lower surface.
And FIG. 4 shows a state where the contact 26 is not sufficiently inserted into the cavity 2 of the housing 1. Under this condition, the stabilizer 26a of the contact 26
Are located on the upper surface of the distal end portion 13a of the bottom plate 19 of the lock case 11, the upper surface of the contact 26 presses against the lower surface (the upper surface of the cavity 2) of the partition plate 3 'of the housing 1, and the contact 26
The lock lever 21 of the housing 1 is not engaged with the locking hole 26b.

As described above, in a state where the stabilizer 26a is in pressure contact with the upper surface of the distal end portion 13a and the lower surface of the partition plate 3 ', the lock case 11 is further pushed into the housing 1 from the temporary fixing state to reach a normal state. Then, the tip portion 13a becomes the slope portion 2
Since the vehicle is going to ride on 0a, it is in a state of being strongly pressed between the distal end portion 13a and the partition plate 3 ', and cannot be pushed as such. Therefore, in these cases,
It can be detected that the contact 26 has not been properly inserted.

On the other hand, as shown in FIG.
Although the lock case 11 is not properly inserted into the cavity 2 of the housing 1, but the stabilizer 26a is located on the upper surface of the step surface portion 20 of the bottom plate of the housing 1, the lock case 11 is
Lock case 11
2, the sliding projection 17 shown in FIG. 2 slides on the slope 9a (moving means) of the guide groove 9 and moves upward, and at the same time, the tip 13a of the bottom plate of the lock case 11
Slope 20a of the bottom plate (moving means)
And the temporary fixing projections 14 are pulled out of the temporary fixing holes 4. Therefore, the lock case 11 can be slid inward of the housing 1 while the slide projection 17 shown in FIG. 2 is slid rearward along the high portion of the guide groove 9. At the time of this sliding, the tip 13a abuts against the stabilizer 26a, and further moves the contact 26 inward through the stabilizer 26a.
Of the lever is pushed down against the elasticity of the lever.

In FIG. 6, the sliding projection 17 shown in FIG. 2 has finished sliding in the guide groove 9, and the contact 26 is normally positioned.
The locking portion 21b of the lock lever 21 is engaged with the locking hole 26b by its elastic return, and at the same time, the stabilizer 26a is located between the tip portion 13a (second locking means) and the stopper 22, and At the same time, the locking projection 18 (final locking means) is engaged with the locking hole 10 shown in FIG. This state indicates that the contact 26 is completely double-locked in the normal position. In this locked state, the anti-floating projection 7 shown in FIG. 1 passes over the guide groove 16 in the rearward direction and presses against the upper surface of the upper plate 15 of the lock case 11 so that the lock case 11 It is prevented from floating under the state of fitting. FIGS. 7 to 9 show the above-described structure of the housing 1 and the lock case 11, that is, a connector having a double locking means and a play preventing means for the contact 26.

The bottom plate 13 and the top plate 15 of the lock case 11 in the insertion contact area of the contact 26 have an elastic lance 28 formed by cutting and raising a part thereof.

On the other hand, the bottom plate 3 and the partition plate 3 'of the housing 1 in the insertion contact area of the contact 26 have a lance forcing rib 29 having a slope 29a. In FIG. 10, in the process of inserting the lock case 11 into the housing 1, the lance 28 slides on the slope 29a of the lance forcing rib 29 and rises on the rib. As a result, the lance 28 elastically presses against the lower surface of the contact 26 to prevent the contact 26 from rattling in the cavity 2.

The opening 25 is provided for inserting a contact of another connector into the contact 26 through the opening 25 and electrically connecting the two contacts.

(Effect of the Invention) According to the configuration of claim 1 of the present invention, when the lock case is pushed into the housing, the lock case is moved from the first position to the second position on the higher surface by the moving means, Since the second locking means abuts against the stabilizer of the contact, the contact not sufficiently inserted into the cavity of the housing is further pushed in to move to the normal position, and the double lock is stably and reliably performed at that position. Can be. Further, in the operation for engaging in the double lock, the lock case is simply pushed in, and the sliding of the lock case in the housing accompanying the push is smooth, thereby improving the work efficiency. it can. Moreover, it does not have a portion that may be damaged by the pushing operation, is extremely robust, has a relatively simple structure, is easy to manufacture, and can be mass-produced at low cost.

Furthermore, according to the configuration of claim 2 of the present invention, the lance that elastically presses against the contact and the lance forcing rib that presses as such prevent the contact from rattling in the cavity, Further, no clearance is generated between the lance and the contact, so that the play preventing effect is improved and there is no fear that the play preventing mechanism is damaged.

Therefore, according to the present invention, the above-mentioned problems of the prior art can be effectively solved, and this type of connector having a double lock, particularly, it is very useful and practically used as that used for an electric part of an automobile. .

[Brief description of the drawings]

FIG. 1 is a perspective view of a housing and a lock case. FIG. 2 is a perspective view showing a temporary fixing state of the lock case to the housing. FIG. 3 is a sectional perspective view showing the temporary fixing state. FIG. 4 is a sectional view showing the temporary fixing state and a state in which the contact is not sufficiently inserted into the cavity of the housing. FIG. 5 is a cross-sectional view showing a process of inserting a lock case into a housing and inserting a contact into a cavity of the housing from the temporary fixing state. FIG. 6 is a cross-sectional view showing the end state of the insertion. FIG. 7 is a perspective view of a lock case having a play preventing lance. FIG. 8 is a sectional perspective view showing a positional relationship between the lance and a lance forcing rib provided on a bottom plate of a housing in the temporarily fixed state. FIG. 9 is a sectional perspective view showing a floating state of the lance in the end state. FIG. 10 is a sectional view showing a relationship between the lance and the lance forcing rib in the end state. 1: Housing 2: Cavity 4: Temporary fixing hole (temporary fixing means) 9: Guide groove (temporary fixing means) 9a: Slope (moving means) 10: Locking hole (finally fixing means) 11: Lock case 12: Cavity 13a: Tip (second locking means and moving means) 14: Temporary fixing projection (temporary fixing means) 17: Sliding projection (temporary fixing means and moving means) 18: Locking projection (final fixing means) 20: Step 20a: Slope (moving means) 21: Lock lever (first locking means) 26: Contact 26a: Stabilizer 28: Lance 29: Rib

Claims (2)

(57) [Claims] 1. A housing having a cavity for receiving a contact having a stabilizer projecting from a lower surface thereof, and a first locking means provided on an inner wall of the cavity for engaging a portion of the contact other than the stabilizer. A lock case that has a cavity in which the contact is inserted, and a second lock unit that contacts the stabilizer to prevent the contact from retreating, and is slidably inserted into the housing; The housing and the lock case are a temporary fixing means for temporarily fixing the lock case to the housing when the lock case is inserted into the housing to a first position, and the lock case is moved to a movement end position. A locking means for locking the lock case to the housing, and a lock case associated with movement of the lock case. Moving means for moving the entirety to a second position on a surface higher than the first position, and the second case is moved only when the lock case is moved to the second position by the moving means. An electrical connector having a double lock, wherein a locking means abuts the stabilizer. 2. The connector according to claim 1, wherein the lock case has a lance for preventing backlash of the contact in an insertion contact area of the contact, and the housing includes the contact. The connector further comprising: a rib for forcibly pushing the lance into contact with the contact at the insertion contact area of the connector.