GB2442845A

GB2442845A - Connector with lever and fulcrum boss

Info

Publication number: GB2442845A
Application number: GB0718889A
Authority: GB
Inventors: Toshiharu Takahashi; Kazuto Ohtaka
Original assignee: Yazaki Corp
Current assignee: Yazaki Corp
Priority date: 2006-10-10
Filing date: 2007-09-28
Publication date: 2008-04-16
Anticipated expiration: 2027-09-28
Also published as: BRPI0703724A; GB2442845B; GB0718889D0; JP4878535B2; JP2008097904A; CN101170229A

Abstract

A connector assembly includes a male connector 2 and a female connector 3. Connector 2 has a lever 4 which pivots at 31 and also has a fulcrum boss 7. When the connectors are pushed together, in the first stage boss 7 is pushed into straight fulcrum guiding groove 33. The lever is then rotated - boss 7 runs along inclined fulcrum guiding groove 34 and is caught by abutting part 6a (Figs 3-4), which controls the movement of the fulcrum boss in the width direction of the connectors. Further rotation of the lever brings the two connectors together (Figs 4-5). Alternatively the boss may be on the counterpart connector and be caught by the lever.

Description

CONNECTOR ASSEMBLY

BACKGROUND OF THE INVENTION

(1) Field of the Invention

The present invention relates to a connector assembly including first and second connectors fitting to each other and a lever rotatably provided to one of the first and second connectors.

(2) Description of the Related Art

A so-called lever-type connector assembly having a lever is known (for example, see Japanese Patent Application No. 2006-3474).

The so-called lever-type connector assembly includes a male connector as the first connector, a female connector as the second connector, and a lever which is rotatably attached to the male connector and allows the male and female connectors to approach and leave each is other when the lever rotates with respect to the male connector.

The lever is provided with a fulcrum boss formed projecting from an end of the lever near the female connector. The female connector is provided with a sliding groove, along which the fulcrum boss slides.

Further, the center of the lever is provided with a hole for a point of action and an arc-shaped guiding hole arranged spaced from each other.

The male connector is provided with a projection for a point of action and a guiding projection, which project from the male connector, are arranged spaced from each other, and enter the hole for a point of action and the guiding hole, respectively.

As for the lever-type connector assembly, the guiding projection enters the guiding hole, the projection for a point of action enters the hole for a point of action, and the lever is attached to the male connector rotatably with respect to the male connector. Then, the fulcrum boss of the lever enters an engaging hole and the lever rotates, so that the male and female connectors fit to each other. When the male and female connectors fitted to each other are to be separated from each other, the lever is rotated in a direction reverse to the direction when the male and female connectors are to be fitted to each other.

Further, as for the lever-type connector assembly, when the male and female connector are to be fitted to each other or to be separated from each other, the fulcrum boss moves within the sliding groove in the width direction of the connectors (i.e. a direction crossing at right angles the direction in which the male and female connectors approach and leave each other when the male and female connector are to be fitted to each other or to be separated from each other), and the guiding projection and the projection for a point of action move within the guiding hole and the hole for a point of action, respectively, so that the rotation direction of the lever is guided.

However, as for the conventional lever-type connector assembly described above, since the fulcrum boss moves within the sliding groove along the width direction of the connectors, therefore in order to guide the rotation direction of the lever with respect to the male connector, the guiding projection and the guiding hole are provided along with the projection for a point of action and the hole for a point of action.

Accordingly, in particular when the male and female connectors fit to each other, in order to rotate the lever, it is necessary to apply force to the lever, said force including: a force necessary to connect a terminal in the male connector with a terminal in the female connector; a friction force due to the movement of the projection for a point of action in the hole for a point of action; a friction force due to the movement of the guiding projection in the guiding hole; and a friction force due to the movement of the fulcrum boss in the sliding groove.

Thus, in particular, since it is necessary to apply the force including the friction force due to the movement of the guiding projection in the pair of the guiding holes so as to rotate the lever, therefore as for the conventional lever-type connector assembly, when the male and female connector is fitted to and separated from each other, it is necessary to apply a strong force to the lever to operate the connector assembly.

SUMMARY OF THE INVENTION

Therefore, it is an objective of the present invention to provide a connector assembly having a lever, by which force applied to the lever can be controlled.

In order to solve the problem described above and to attain the objective, a connector assembly according to the present invention includes: a first connector; a second connector to be fitted to the first connector; a lever which is rotatably attached to one connector of the first and second connectors and allows the first and second connectors to approach and leave each other when the lever is rotated; a fulcrum boss which projects from one of the lever and another connector of the first and second connectors, and is caught by another of the lever and said another connector of the first and second connectors when the first and second connectors are fitted to each other; and a displacement controlling means (or displacement preventing means) which controls displacement of the fulcrum boss in a direction crossing at right angles a direction in which the first and second connectors are fitted to each other even when the lever is rotated when the first and second connectors are fitted to each other.

With the construction described above, since the displacement controlling means (or displacement preventing means) controls the displacement of the fulcrum boss in a direction crossing at right angles a direction in which the first and second connectors are fitted to each other, that is, in the width direction of the connectors, therefore the fulcrum boss supports the rotating lever. Accordingly, even if one projection for a point of action and one hole for a point of action to guide the rotation of the lever are provided, the rotation of the lever can be guided by the projection, the hole, and the fulcrum boss.

With the construction described above, there is no need to provide the guiding projection and guiding hole as well as the projection for a point of action and hole for a point of action to guide the rotation of the lever, a friction force due to the movement of the guiding projection in the guiding hole when the lever is rotated, that is, when the first and second connectors are fitted to or separated from each other. Accordingly, force applied to the lever can be controlled when the first and second connectors are fitted to or separated from each other.

The displacement controlling means is provided on said another of the lever and said another connector of the first and second connectors.

With the construction described above, since the displacement controlling means is provided on said another of the lever and said another connector of the first and second connectors, that is, on said another on which the fulcrum boss is not provided, therefore the s displacement controlling means securely interferes with the fulcrum boss so that the movement of the fulcrum boss in the width direction of the connectors can be securely controlled. Accordingly, force applied to the lever can be securely controlled when the first and second connectors are fitted to or separated from each other.

Said another of the lever and said another connector of the first and second connectors is provided with a groove into which the fulcrum boss is capable of entering, and the displacement controlling means is a part of an inner surface of the groove.

With the construction described above, since the displacement Is controlling means is a part of an inner surface of the groove into which the fulcrum boss enters, therefore the displacement controlling means securely interferes with the fulcrum boss so that the movement of the fulcrum boss in the width direction of the connectors can be securely controlled. Accordingly, force applied to the lever can be securely controlled when the first and second connectors are fitted to or separated from each other.

The fulcrum boss is formed in a cylindrical shape.

With the construction described above, since the fulcrum boss is formed in a cylindrical shape, therefore force applied to the lever is never changed suddenly during the rotation of the lever. Accordingly, the force applied to the lever can be controlled and the force applied on the lever can be prevented from changing suddenly when the first and second connectors are fitted to or separated from each other.

BRIEF DESCRIPTION OF THE DRAWINGS

s Figure 1 is an exploded perspective view illustrating a connector assembly according to a preferred embodiment of the present invention; Figure 2 is a perspective view of a male connector attaching a lever in the connector assembly shown in Fig. 1 on a condition that a part of a wall of an outer cover of the male connector is removed; Figure 3 is a cross sectional view illustrating a state when male and female connectors of the connector assembly shown in Fig. 1 are provisionally fixed; Figure 4 is a cross sectional view illustrating a state when a fulcrum boss provided on a lever shown in Fig. 3 is positioned in an end part of an inclined part of a fulcrum guiding groove provided on the female connector, said end part being situated away from an straight part of the fulcrum guiding groove; Figure 5 is a cross sectional view illustrating a state when the male and female connectors shown in Fig.4 are fitted to each other; and Figure 6 is a perspective view illustrating another example of the male connector and the lever of the connector assembly shown in Fig. 2.

DESCRIPTION OF THE PREFERRED EMBODIMENTS

In the following, a connector assembly according to a preferred embodiment of the present invention will be explained with reference to Figs. 1 -5. As shown in Figs. 1 -5, a connector assembly 1 according to the preferred embodiment of the present invention includes: a male connector 2 as the first connector having a fulcrum guiding groove 6 as the groove; and a female connector 3 as the second connector having the fulcrum boss 7, to which female connector 3 a lever 4 is attached.

The male connector 2 includes a connector housing 9 and cover member 10. As shown in Fig. 1, the connector housing 9 integrally includes a box-shaped inner housing 11 and cylindrical outer cover 12.

The inner housing 11 is provided with terminal receiving chambers 13 (see Fig. 2). Each receiving chamber 13 receives a female terminal fitting (hereinafter, female terminal; not shown in the figure).

The outer cover 12 is formed integrally with the inner housing 11 receiving the inner housing 11 inside. An inner surface of the outer cover 12 is spaced from an outer surface of the inner housing 11 and provided with a plurality of connecting ribs 15 which connect the inner housing 11 to the outer cover 12 as shown in Fig. 2. As shown in Fig. 2, the inner surface of the outer cover 12 is provided with a lever supporting projection 14 which projects from the inner surface of the outer cover 12.

The lever supporting projection 14 is formed in a cylinder-shape. The lever supporting projection 14 is provided at the center in the width direction of the male connector 2 of the outer cover 12.

Here, the width direction is a direction crossing at right angles the direction (shown by an arrow S in Fig. 1) in which the connectors 2 and 3 approach and leave each other when the connectors 2 and 3 are fitted to or separated from each other. That is, the direction shown by the arrow S is the direction in which the connectors 2 and 3 are fitted to each other.

The cover member 10 is formed in a gutter-shape and attached to an end part of the inner housing 11 of the connector housing 9; said end part being situated away from the female connector 3. The cover member 10 receives an electric wire attached to the female terminal so as to protect the electric wire.

An outer surface (each of a pair of side surfaces in the width direction situated on this side and the depth side in Fig. 1) of the inner housing 11 of the male connector 2 is provided with a lever-locking arm 16. The lever-locking arm 16 engages with an operation plate 30 (explained later) of the lever 4 when the male connector 2 and the female connector 3 approach each other.

The inner housing 11 of the male connector 2 is provided with a provisional engaging part (not shown in the figure) which provisionally engages with a provisional engaging projection 23 of the female connector 3 so that the inner housing 11 enters the female connector 3 so as to be provisionally fixed to the female connector 3 on a condition that the terminals are spaced from each other.

The female connector includes a connector housing 22. The connector housing 22 includes a terminal receiving chamber which mainly receives an electric wire connection part of a male terminal (not shown in the figure) and is formed in a tube-shape. The connector housing 22 is provided with the provisional engaging projection 23. The provisional engaging projection 23 is formed projecting from an outer surface of the connector housing 22.

As for the female connector 3, the connector housing 22 enters into between the inner housing 11 and the outer cover 12 of the male connector 2 and the provisional engaging projection 23 provisionally engages with the provisional engaging part (not shown in the figure), so that the female connector 3 is provisionally fixed to the male connector 2.

When the female connector 3 is provisionally fixed to the male connector 2, a part of the connector housing 22 enters into between a flat plate part 29 (explained later) of the lever 4 and the inner housing 11.

As shown in Fig. 2, the lever 4 includes a pair of the flat plate parts 29 and an operation plate part 30 which connects end parts of the flat plate parts 29, and is formed in a C-shape as a whole. Each flat plate part 29 is formed in a band plate-shape. The flat plate parts 29 are arranged in parallel to each other having a distance therebetween.

Each flat plate part 29 is provided with a guiding hole 31 for a point of action. The guiding hole 31 for a point of action penetrates through the flat plate part 29.

The guiding hole 31 for a point of action is provided at a center in the longitudinal and width directions of the flat plate part 29. A plan view shape of the guiding hole 3 1 is formed in an elliptic shape with its long diameter being along the longitudinal direction of the flat plate part 29. The lever supporting projection 14 formed on an inner surface of the outer cover 12 enters the guiding hole 31. When the lever supporting projection 14 enters the guiding hole 31, the lever supporting projection 14 becomes movable and rotatable in the guiding hole 31 and is attached to the male connector 2 rotatably around the center of the flat plate part 29.

The flat plate part 29 is arranged between the inner housing 11 and the outer cover 12 on a condition that the lever supporting projection 14 enters the guiding hole 3 1.

The operation plate part 30 is arranged at a position where the operation plate part 30 can engage with the lever-locking arm 16 when the flat plate part 29 rotates on a condition that the flat plate part 29 is arranged between the inner housing 11 and the outer cover 12. The operation plate part 30 is provided with a lever-locking projection 32 which projects toward the lever-locking arm 16. The lever-locking projection 32 engages with the lever-locking arm 16. When the lever-locking projection 32 engages with the lever-locking arm 16, the lever-locking projection 32 positions the lever 4 on a condition that the connectors 2 and 3 are completely fitted to each other.

When the male and female connectors 2, 3 are fitted to each other, a fulcrum boss 7 (explained later) formed on the lever 4 enters a fulcrum guiding groove 6 formed on the female connector 3.

When the lever 4 rotates around the center described above with respect to the connector housing 9 of the male connector 2, the fulcrum boss 7 slides (i.e. moves and rotates) in the fulcrum guiding groove 6 so as to allow the female connector 3 and the male connector 2 to approach or leave each other.

When the fulcrum boss 7 becomes capable of entering into and coming out from the fulcrum guiding groove 6, the lever 4 is rotatable with respect to the male connector 2 between a provisional engaging position (shown in Fig. 3) where the connectors 2 and 3 are completely separated from each other and a complete fitting position where the connectors 2 and 3 are completely fitted to each other. At the provisional engaging position, a part of the flat plate part 29 of the lever 4 situated on the side of the fulcrum boss 7 is received in between the outer cover 12 and the inner housing 11. At the complete fitting position, almost all of the flat plate part 29 is received.

The fulcrum boss 7 is provided on an opposite end part of the flat plate part 29 of the lever 4, said end part not continuing to the operation plate part 30. The fulcrum boss 7 is formed in a cylindrical shape and projects from the flat plate part 29 in a direction in which the flat plate parts 29 approach each other. That is, the fulcrum boss 7 is formed projecting from the flat plate part 29 toward the fulcrum guiding groove 6 of the female connector 3.

The fulcrum guiding groove 6 is formed on an outer surface of the connector housing 22 of the female connector 3. When the connectors 2 and 3 are fitted to each other, the fulcrum guiding groove 6 is arranged at a position corresponding to the lever-supporting projection 14. Each fulcrum guiding groove 6 is formed in a groove-shape concave from the outer surface of the connector housing 22 and includes a straight part 33 and an inclined part 34.

The straight part 33 extends straight along the direction S in which the connectors 2 and 3 approach and leave each other. One end of the straight part 33 is opened at an edge of the connector housing 22 of the female connector 3, said edge being situated near the male connector 2.

The inclined part 34 continues to an opposite end of the straight part 33 and extends from the opposite end toward the one end of the straight part 33 and the outside of the female connector 3. Therefore, a pair of the inclined parts 34 in a direction crossing at right angles the direction S extends in a direction in which the inclined parts 34 leave each other as approaching the male connector 2. The inclined part 34 is inclined with respect to the direction S. The fulcrum boss 7 enters into the fulcrum guiding groove 6 through an edge of the straight part 33 near the male connector 2. The fulcrum boss 7 entered in the fulcrum guiding groove 6 is movable in the fulcrum guiding groove 6. When the lever 4 is rotated, the fulcrum boss 7 abuts against an abutting part 6a which is situated at an end part of the inclined part 34 of the inner surface of the fulcrum guiding groove 6, said end part being situated away from the straight part 33. When the connectors 2 and 3 are fitted to each other, the abutting part 6a of the fulcrum guiding groove 6 acts as the displacement controlling means (i.e. displacement preventing means) which controls the displacement of the fulcrum boss 7 in the width direction of the connectors 2, 3 (i.e. the direction crossing at right angles the direction S).

When the fulcrum boss 7 abuts against the abutting part 6a of the fulcrum guiding groove 6, the fulcrum boss 7 is situated in the end part of the inclined part 34 of the fulcrum guiding groove 6, said end part being situated away from the straight part 33. Then, since the inclined part 34 of the fulcrum guiding groove 6 extends as described above, therefore the fulcrum boss 7 is prevented from coming out from the fulcrum guiding groove 6 even if the connecters 2 and 3 are to be separated from each other. Thus, when the fulcrum boss 7 abuts against the abutting part 6a of the fulcrum guiding groove 6, the fulcrum boss 7 is caught by the female connector 3.

When the male connector 2 and the female connector 3 of the connector assembly 1 are to be fitted to each other, first, the female terminal having an electric wire is received in the terminal receiving chamber 13 of the connector housing 9 and the lever 4 is attached to between the connector housing 9 and the outer cover 12 of the male connector 2. On this condition, the lever 4 is positioned at the provisional engaging position described above. The male terminal 25 is attached in the connector housing 22.

Then, as shown in Fig. 3, the fulcrum boss 7 enters into the straight part 33 of the fulcrum guiding groove 6 and the provisional engaging projection 23 of the female connector 3 is provisionally engaged with the provisional engaging part (not shown in the figure) of the male connector 2, so that the connectors 2 and 3 are provisionally fixed to each other.

Then, of course, the fulcrum boss 7 is situated in the end part of the opposite end of the fulcrum guiding groove 6 and the lever supporting projection 14 is situated in the end part of the end of the guiding hole 31 for a point of action near the operation plate part 30. Then, the operation plate part 30 of the lever 4 is pressed so as to rotate the lever 4 toward the second position.

Then, as shown in Fig. 4, the fulcrum boss 7 abuts against the abutting part 6a of the fulcrum guiding groove 6. Between Fig. 3 and Fig. 4, the lever 4 is rotated, but the connectors 2 and 3 do not move at all relatively to each other. Therefore, between Fig. 3 and Fig. 4, there is no action of fitting of the connectors 2 and 3 to each other.

Further, when the operation plate part 30 is pressed so as to rotate the lever 4 toward the second position, since the fulcrum boss 7 abuts against the abutting part 6a, therefore the connectors 2 and 3 gradually approach each other on a condition that the fulcrum boss 7 is prevented from being displaced in the width direction of the connectors 2, 3. At that time, the lever supporting projection 14 moves from the end part of the guiding hole 31 for a point of action, said end part being situated near the operation plate part 30, toward the other end part of the guiding hole 31 for a point of action, said other end part being situated away from the operation plate part 30.

When the lever-locking projection and the lever-locking arm 16 are completely engaged with each other so that the lever 4 is positioned at the complete fitting position described above, the fitting of the connectors 2 and 3 to each other is completed. The cover member 10 is in advance attached to the male connector 2 before the fitting of the connectors 2 and 3.

When the connectors 2 and 3 are to be separated from each other, the lever 4 is rotated from the second position toward the first position.

Between Fig. 4 and Fig. 5, the connectors 2 and 3 approach or leave relatively each other. Therefore, between Fig. 4 and Fig. 5, there is an action of fitting of the connectors 2 and 3 to each other. That is, the abutting part 6a of the fulcrum guiding groove 6 prevents the fulcrum boss 7 from being displaced in the width direction of the connectors 2, 3 even if the lever 4 rotates when the connectors 2 and 3 are fitted to or separated from each other.

According to the preferred embodiment, the abutting part 6a (i.e. displacement controlling means) prevents the fulcrum boss 7 from moving in the width direction of the connectors 2, 3, which crosses at right angles the direction S described above during the fitting of the connectors 2 and 3, that is, the fulcrum boss 7 supports the rotating lever 4.

The lever-supporting projection 14 as the projection for a point of action and the guiding hole 31 for a point of action as the hole for a point of action are provided to guide the rotation of the lever 4. The rotation direction of the lever 4 can be guided, that is, the lever 4 can be rotatably supported by the lever-supporting projection 14, the guiding hole 31, and the fulcrum boss 7.

Therefore, since only one lever-supporting projection 14 and only one guiding hole 31 for a point of action is provided so as to guide the rotation of the lever 4, therefore the friction force due to the movement of the lever-supporting projection 14 in the guiding hole 31 can be reduced when the lever 4 is rotated, that is, when the connectors 2 and 3 are fitted to or separated from each other. Therefore, the force applied to the lever 4 can be restricted when the connectors 2 and 3 are fitted to or separated from each other.

Since the displacement controlling means is provided on the female connector 3, which does not include the fulcrum boss 7, out of the lever 4 and the female connector 3, therefore the displacement controlling means securely interferes with the fulcrum boss 7 so as to securely prevent the fulcrum boss 7 from moving in the width direction of the connectors 2, 3. Therefore, the force applied to the lever 4 can be securely restricted when the connectors 2 and 3 are fitted to or separated from each other.

Since the displacement controlling means is the abutting part 6a as a part of the inner surface of the fulcrum guiding groove 6 into which the fulcrum boss 7 enters, therefore the displacement controlling means securely interferes with the fulcrum boss 7, so that the fulcrum boss 7 is securely prevented from moving in the width direction of the connectors 2, 3. Accordingly, the force applied to the lever 4 can be more securely restricted when the connectors 2 and 3 are fitted to or separated from each other.

When the connectors 2 and 3 are fitted to each other, the lever-supporting projection 14 gradually moves toward the end part of the guiding hole 31, said end part being situated away from the operation plate part 30, as the connectors 2 and 3 are being fitted to each other.

Therefore, the distance L2a (shown in Fig. 5) between the center of the lever-supporting projection 14 and the center of the fulcrum boss 7 after the fitting of the connectors 2 and 3 becomes shorter than the distance L2 (shown in Fig. 4) between the center of the lever-supporting projection 14 and the center of the fulcrum boss 7 before the fitting of the connectors 2 and 3. Therefore, if the distance between the center of the fulcrum boss 7 and the operation plate part 30 is set to be Li (shown in Figs. 4 and 5), the leverage (L2a/L1) after the fitting of the connectors 2 and 3 becomes larger than the leverage (L2/L1) before the fitting of the connectors 2 and 3, so that the force applied to the lever 4 can be gradually set weak as the connectors 2 and 3 are being fitted to each other.

Moreover, since the fulcrum boss 7 is formed in a cylindrical shape, therefore the force applied to the lever 4 can be restricted and also the force applied to the lever 4 can be prevented from rapidly changing during the fitting or separating of the connectors 2 and 3.

In the preferred embodiment described above, the lever 4 is attached to the male connector 2. However, instead, the lever 4 may be attached to the female connector 3.

In the preferred embodiment described above, the fulcrum boss 7 projecting from the lever 4 is provided, the fulcrum boss 7 is capable of being caught by the female connector 3, and the female connector 3 is provided with the abutting part 6a of the fulcrum guiding groove 6, which prevents the fulcrum boss 7 from being displaced in the width direction of the connectors 2, 3. However, instead, the fulcrum boss 7 projecting from the female connector 3 may be provided, the fulcrum boss 7 may be capable of being caught by the lever 4, and the lever 4 may be provided with the displacement controlling means, which prevents the fulcrum boss 7 from being displaced in the width direction of the connectors 2, 3.

That is, in the present invention, one connector out of the male connector 2 and the female connector 3 attaches the lever 4 rotatably, one of the lever 4 and another connector out of the male connector 2 and the female connector 3 is provided with the fulcrum boss 7, which is caught by another of the lever 4 and said another connector out of the male connector 2 and the female connector 3, said another of the lever 4 andsaid another connector out of the male connector 2 and the female connector 3 is provided with the fulcrum guiding groove 6, and the displacement controlling means is provided.

Further, as shown in Fig. 6, in the present invention, the outer cover 12 may not be provided on the connector housing 9 of the male connector 2. In this case, the lever-supporting projection 14 is formed projecting from an outer surface of the inner housing 11 and the fulcrum boss 7 is formed projecting from the flat plate part 29 of the lever 4 in a direction in which the flat plate parts 29 leave each other. The fulcrum guiding groove 6 is formed concave from an inner surface of the connector housing 22 of the female connector 3.

Further, in the present invention, without providing the fulcrum guiding groove 6, the displacement controlling means may be a projection or recess formed on said another of the lever 4 and said another connector out of the male connector 2 and the female connector 3, the fulcrum boss 7 not being formed on said another of the lever 4 and said another connector out of the male connector 2 and the female io connector 3. In the preferred embodiment described above, the fulcrum boss 7 is formed in a cylindrical shape. However, instead, the fulcrum boss 7 may be formed in a column-shape having an elliptic shape in its plan view. That is, the fulcrum boss 7 may be in any shape provided that the fulcrum boss 7 can perform its function.

The aforementioned preferred embodiments are described to aid in understanding the present invention and variations may be made by one skilled in the art without departing from the spirit and scope of the present invention.

Claims

What is claimed is: 1. A connector assembly comprising: a first

connector; a second connector to be fitted to the first connector; a lever which is rotatably attached to one connector of the first and second connectors and allows the first and second connectors to approach and leave each other when the lever is rotated; a fulcrum boss which projects from one of the lever and another connector of the first and second connectors, and is caught by another of the lever and said another connector of the first and second connectors when the first and second connectors are fitted to each other; and a displacement controlling means which controls displacement of the fulcrum boss in a direction crossing at right angles a direction in which the first and second connectors are fitted to each other even when the lever is rotated when the first and second connectors are fitted to each other.
2. The connector assembly according to claim 1, wherein the displacement controlling means is provided on said another of the lever and said another connector of the first and second connectors.
3. The connector assembly according to claim 2, wherein said another of the lever and said another connector of the first and second connectors is provided with a groove into which the fulcrum boss is capable of entering, and wherein the displacement controlling means is a part of an inner surface of the groove.
4. The connector assembly as claimed in any one of claims 1 -3, wherein the fulcrum boss is formed in a cylindrical shape.