JP2003031311A - Lever type connector - Google Patents

Abstract

PROBLEM TO BE SOLVED: To positively maintain a locked state of a rotary lever. SOLUTION: A locking means 14 for locking the rotary lever 13 supported on a first housing 11 and an unlocking means 15 for releasing the locked state of the rotary lever 13 are individually provided on an upper face of a second housing 12. A protruding piece 21 is flatly extended from a front wall 13d of the rotary lever 13, and pairs of ear parts 22 are respectively protrudedly provided on both side faces of an end part of the protruding piece 21. As the locking means 14, a pair of parallel wall parts 24 facing each other is perpendicularly provided toward the direction parallel with an axis. Pairs of lock protrusion parts 25 are respectively provided so as to face each other on inner face upper parts of the wall parts 24. As the unlocking means 15, a support piece 28 is perpendicularly provided toward the direction perpendicular to the axis. An operating piece 29 pressed by a hand or finger and an acting piece 30 acting on the lock protrusion parts 25 of the locking means 14 are sequentially provided toward the rear on an upper end part of the support piece 28.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lever-type connector for connecting and disconnecting a pair of housings respectively accommodating a large number of connection terminals with a rotating lever.

[0002]

2. Description of the Related Art As shown in FIG. 10, a conventional lever-type connector of this type comprises a pair of housings 1 and 2 which can be fitted to each other, and these housings 1 and 2 are connected to each other in a large number. Each contains a connection terminal. Straight grooves 1a are provided on both side walls of the one housing 1 in a direction along the axis, and support shafts 1b are provided on outer surfaces of the side walls in a direction orthogonal to the axis. , Cam grooves 3a on the left and right support shafts 1b
It supports the rotating lever 3 having. On the outer surfaces of both side walls of the other housing 2, pin portions 2a are provided so as to project in a direction orthogonal to the axis.

As shown in an example in FIG. 11, the other housing 2 is provided with a locking means 4 for locking the turning lever 3, and the locking means 4 locks the turning lever 3. It also has means for releasing the state. That is, the locking means 4
Is a locking portion 4a for locking the locked portion 3b provided in the middle between the left and right of the rotating lever 3, and when releasing the locked state of the locked portion 3b and the locking portion 4a. It integrally has an operating portion 4b for pressing.

When the two housings 1 and 2 are joined together, the inlet of the straight groove 1a of the one housing 1 and the inlet of the cam groove 3a of the rotary lever 3 are aligned, and the other housing 2 is inserted into these inlets. The pin portion 2a of is positioned.
When the rotating lever 3 is rotated in this state, the wall surface of the cam groove 3a of the rotating lever 3 drives the pin portion 2a of the other housing 2 and pulls the other housing 2 toward the one housing 1 side. When the turning lever 3 is turned to the final position, both housings 1 and 2 are coupled to the final position, and the locked portion 3b of the turning lever 3 and the locking portion 4a of the locking means 4 engage. To meet.

On the other hand, when releasing the locked state of the rotating lever 3, the rotating lever 3 is pushed in the direction of the arrow shown in FIG. 10 while pushing the operating portion 4b of the locking means 4. In this case, as shown in FIG. 11, the force of the vector A that drives the rotating lever 3 is divided into the component force of the vector B in the direction along the axis and the component force of the vector C in the direction orthogonal to the axis. .
Therefore, when the force of the vector A is applied to the rotary lever 3 without pressing the operation portion 4b of the locking means 4, the locking portion 4a of the locking means 4 tries to move with the component force of the vector C. The locked portion 3b of the rotating lever 3 is locked.

[0006]

However, the component force of the vector B may exceed a predetermined value depending on the position of the force acting on the rotary lever 3 and the bending of the rotary lever 3. In this case, the locked portion 3b of the rotating lever 3 moves in the direction along the axis and disengages from the locking portion 4a of the locking means 4, and the locked state of the rotating lever 3 is erroneously released. Sometimes.

Further, in the locking means 4, since the engaging portion 4a and the operating portion 4b are integrated, if the operating portion 4b is damaged, the engaging portion 4a is often damaged. May not be able to maintain the locked state of the rotating lever 3.

The object of the present invention is to solve the above-mentioned problems,
An object of the present invention is to provide a lever-type connector capable of reliably maintaining a locked state of a rotating lever.

[0009]

To achieve the above object, a lever-type connector according to the present invention accommodates a large number of connection terminals and includes a first housing and a second housing which can be fitted to each other. The first housing includes a turning lever for pulling the second housing, and the second housing has a lever-type connector having locking means for locking the turning lever at a stop position. In the above, the rotating lever has a pair of locked portions that act on the boss means, and the locking means rises from the upper surface of the second housing and is parallel to each other at intervals along the axis. It is composed of a pair of extending wall portions and locking portions that respectively project laterally from the upper portions of these wall portions, and pushes the locked portion of the turning lever into the wall portion to move the wall portion. Orthogonal to the axis Characterized by locking with the locking portion of the engaged portion while deforming direction.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention will be described in detail based on the embodiments shown in FIGS. FIG. 1 is a side view of a main part of a lever-type connector according to an embodiment of the present invention with a part cut away, showing a first housing 11 and a second housing 12.
Is connected to the final position by the rotating lever 13, and the rotating lever 13 is locked. Each of the first and second housings 11 and 12 houses a large number of connection terminals (not shown) that can be connected to each other. In addition, "front" used in this embodiment means the right side with respect to the paper surface,
"Left-and-right direction" means the front-back direction with respect to the paper surface.

On both side walls of the first housing 11, a second
Straight grooves 11a for introducing the later-described pin portions of the housing 12 are formed in the directions along the axis. On the outer surfaces of both side walls of the first housing 11, support shafts 11b for supporting the turning lever 13 are provided so as to project in a direction orthogonal to the axis.

On the outer surfaces of both side walls of the second housing 12, pin portions 12a driven by the rotating lever 13 are provided so as to project in a direction orthogonal to the axis. Then, on the upper surface of the upper wall of the second housing 12, locking means 14 for locking the rotation lever 13 and the rotation lever 13 are provided.
An unlocking means 15 for unlocking the locked state is independently provided.

The rotating lever 13 is provided in the first housing 11
A pair of left and right plate-shaped lever main bodies 13a supported on both side surfaces of the lever via support shafts 11b, and a connecting portion 13b having a U-shaped cross section for connecting upper end portions of these lever main body portions 13a. A cam groove 13c for driving the pin portion 12a of the second housing 12 is formed in the lever body portion 13a. Then, the protruding piece 21 is connected to the connecting portion 1 approximately in the middle of the left and right of the connecting portion 13b of the rotating lever 13.
It extends flatly from the front wall 13d of 3b.

FIG. 2 is a perspective view of the lock means 14 and the lock release means 15, and FIG. 3 is an end view of the rotating lever 13 and the lock means 14 in a locked state. A pair of left and right ears 22 are provided on both sides of the end of the protrusion 21 provided on the rotary lever 13 so as to extend in the left-right direction, and a guide surface 23 is provided on each of the ears 22.

As the locking means 14, a pair of left and right wall portions 24 facing each other in parallel are provided perpendicularly to the upper wall upper surface of the second housing 12 in the direction along the axis. A pair of left and right locking projections 25 are provided on the upper inner surfaces of these wall portions 24 so as to face each other. On the upper surfaces of these locking projections 25, the guide surface 2 that guides the ear portion 22 of the rotating lever 13
6 are provided respectively. The distance between the outer surfaces of the ears 22 in the left-right direction is made larger than the distance between the inner surfaces of the locking projections 25, so that the ears 22 can be reliably locked by the locking projections 25. Then, the second housing 12
A pair of left and right ridges 27 are provided on the upper surface of the upper wall so as not to move the ears 22 of the turning lever 13 located between the left and right wall portions 24 rearward.

As the unlocking means 15, a support piece 28 is provided perpendicularly to the upper surface of the upper wall of the second housing 12 in the direction orthogonal to the axis. An operation piece 29, which is pressed by a finger or the like, is provided on the upper end of the support piece 28 so as to project rearward, and an operation piece 30 which acts on the locking projection 25 of the locking means 14 is provided at the end of the operation piece 29. Is protruding toward the rear. A notch 31 is formed in the action piece 30, and an inclined surface 32 that acts on the guide surface 26 of the locking means 14 is provided on the lower surface of the action piece 30.

Before the first housing 11 and the second housing 12 are joined together, the inlet of the straight groove 11a of the first housing 11 and the inlet of the cam groove 13c of the rotary lever 13 are aligned and these The pin portion 12a of the second housing 12 is located in the inlet. Then, as shown in FIG. 4, when the turning lever 13 is turned in the direction of the arrow D, the wall surface of the cam groove 13c of the turning lever 13 causes the second housing 1 to move.
The second pin 12a is driven to pull the second housing 12 toward the first housing 11 side. This makes the first
The housing 11 and the second housing 12 are coupled to each other at the final position, and the connection terminals in the first housing 11 and the connection terminals in the second housing 12 are connected to each other at the final position.

When the rotary lever 13 is further pressed in the direction of arrow D, the rotary lever 13 is moved as shown in FIGS.
Projecting piece 21 of further moves in the direction of arrow E,
Of the lock means 14 acts on the guide surface 26 of the lock means 14 to tilt the left and right wall portions 24 of the lock means 14 in the directions of arrows F and G, respectively. Then, when the ear portion 22 of the rotating lever 13 gets over the locking projection 25 of the locking means 14, FIGS.
As shown in FIG. 4, the wall portion 24 of the locking means 14 is restored, the locking projection 25 of the locking means 14 locks the ear portion 22 of the rotating lever 13, and the locking means 14 locks the rotating lever 13. Stop.

On the other hand, when releasing the locked state of the rotating lever 13, as shown in FIG. 7, the operating piece 29 of the lock releasing means 15 is pressed in the direction of the arrow H while the rotating lever 1 is pressed.
3 is pressed in the direction of arrow I. As a result, as shown in FIG. 8 and FIG. 9, the inclined surface 32 of the lock releasing means 15 becomes the lock means 1.
It acts on the guide surface 26 of No. 4 and tilts the left and right wall portions 24 of the locking means 14 in the directions of arrows F and G, respectively, as described above. Therefore, the ear portion 22 of the rotating lever 13 can be moved in the arrow J direction, and the locked state of the rotating lever 13 can be released.

In this embodiment, since the ears 22 of the rotating lever 13 and the locking projections 25 of the locking means 14 are engaged by utilizing the elasticity of the wall portion 24 in the left-right direction, the rotating lever 1
The wall portion 24 does not deform even when the external force 3 is applied in the direction along the axis, and the locked state of the rotating lever 13 can be reliably maintained. Further, since the lock release means 15 is independent of the lock means 14, even if the lock release means 15 is damaged, the lock function of the lock means 14 is not impaired.

In the above embodiment, the rotating lever 1
Although the protrusion 21 is provided on the front wall 13d of No. 3 and the ear 22 is provided on the protrusion 21, the same effect can be obtained by providing the ear 22 without the protrusion 21. The rotation lever 13 and the locking means 14 are provided on the wall portion 24 of the locking means 14.
Although it is configured to be locked while being deformed outward, it may be configured to be locked while being deformed inward.

Further, the guide surface 23 and the guide surface 26 are provided on both the ear portion 22 of the rotating lever 13 and the locking projection 25 of the locking means 14.
However, they may be provided in either one.

[0023]

As described above, in the lever-type connector according to the present invention, the wall of the locking means is deformed in the direction orthogonal to the axis to lock the rotary lever, so that the rotating lever is locked. Even if an external force is applied to the moving lever in the direction along the axis, the wall portion is not deformed, and the rotating lever can be reliably locked.

Further, by providing the lock releasing means separately, even if the lock releasing means is damaged, the effect thereof is not exerted on the lock releasing means and the function of the lock releasing means is not impaired.

[Brief description of drawings]

FIG. 1 is a side view of a main part with a part cut away from an embodiment.

FIG. 2 is a perspective view of a lock unit and a lock release unit.

FIG. 3 is an end view of a rotation lever and a locking means in a locked state.

FIG. 4 is an operation explanatory view.

FIG. 5 is an operation explanatory view.

FIG. 6 is an operation explanatory view.

FIG. 7 is an operation explanatory view.

FIG. 8 is an operation explanatory view.

FIG. 9 is an operation explanatory view.

FIG. 10 is a side view of a conventional example.

FIG. 11 is an explanatory view of the operation of the conventional example.

[Explanation of symbols]

11 First housing 12 Second housing 13 Rotating lever 14 Locking means 15 Lock release means 21 Projection 22 ear 23, 26 guide surface 24 wall 25 Locking protrusion 27 Regulation Department 29 Operation board 30 action pieces 32 inclined surface

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Takayuki Higuchi             1-8-1 Kotake-cho, Nerima-ku, Tokyo Ryosei             Denso Co., Ltd. (72) Inventor Hirose Tetsu             1-8-1 Kotake-cho, Nerima-ku, Tokyo Ryosei             Denso Co., Ltd. F-term (reference) 5E021 FA09 FC09 FC36 HC11 HC31                       HC35 KA15

Claims (4)

[Claims] 1. A rotation lever for accommodating a large number of connection terminals and comprising a first housing and a second housing which can be fitted to each other, wherein the first housing pulls the second housing. In the lever type connector having lock means for locking the rotation lever at the stop position, the rotation lever has a pair of locked portions that act on the superior means. The locking means has a pair of wall portions that stand up from the upper surface of the second housing and extend in parallel at a distance in the direction along the axis, and from the upper portions of these wall portions to the lateral sides, respectively. The locking portion protruding from the locking lever is pushed into the wall portion to deform the wall portion in a direction orthogonal to the axis, and the locked portion is fixed to the locking portion. Characterized by locking Lever type connector. 2. The second housing has lock releasing means for releasing the locked state of the locked portion to the locking portion by deforming the wall portion. The lever-type connector described. 3. The lever-type connector according to claim 1, wherein the locking means has a restriction portion that restricts movement of the rotation lever in a direction along an axis of the locked portion. 4. The lever-type connector according to claim 1, wherein at least one of the locked portion and the locking portion has a guide surface for guiding a mating side.