Lever-type connector

1. A lever-type connector, comprising:

a housing configured to be inserted and removed from a mating housing of a mating connector;

a lever, pivotally mounted on the housing, and that is pivotally operable between a temporary locking position and a fitting completion position of the lever, the lever comprising:

a pair of side plates arranged along surfaces on both sides of the housing; and

an operating portion that connects ends of the side plates; and

a lock portion, provided on the housing, and that locks the lever positioned at the fitting completion position,

wherein the housing is configured to be fitted to the mating housing by rotating the lever from a fitting start position to the fitting completion position;

wherein lever disengagement prevention portions are provided on both sides of the housing and configured to receive at least respective parts of the side plates of the lever; and

wherein the at least respective parts of the side plates of the lever are received in the lever disengagement prevention portions so that the at least respective parts of the side plates of the lever are covered by the lever disengagement prevention portions from outside in a state where the lever is positioned at the fitting completion position.

2. The lever-type connector according to claim 1 , wherein in the state where the lever is positioned at the fitting completion position, vibration-suppressing protrusions provided on the side plates of the lever are received in the lever disengagement prevention portions so that inner surfaces of the lever-disengagement prevention portions respectively contact the vibration-suppressing protrusions.

3. The lever-type connector according to claim 1 , wherein the housing has a pair of walls that are provided at both sides of the lock portion for locking the operating portion of the lever;

wherein recessed portions that externally fit the pair of walls of the housing are formed on the operating portion of the lever; and

wherein inner surfaces of the recessed portions contact outer surfaces of the pair of walls facing the inner surfaces respectively when the lever is positioned at the fitting completion position.

4. A lever-type connector, comprising:

a housing configured to be inserted and removed from a mating housing of a mating connector;

a lever, pivotally mounted on the housing, and that is pivotally operable between a temporary locking position and a fitting completion position of the lever, the lever comprising:

a pair of side plates arranged along surface on both sides of the housing; and

an operating portion that connects ends of the side plates; and

a lock portion, provided on the housing, and that locks the lever positioned at the fitting completion position,

wherein the housing is configured to be fitted to the mating housing by rotating the lever from a fitting start position to the fitting completion position;

wherein lever disengagement prevention portions are provided on both sides of the housing so as to cover at least respective parts of the side plates of the lever positioned at the fitting completion position from outside;

wherein locking protrusions are formed on inner surfaces of the side plates of the lever so as to lock the lever to the temporary locking position with respect to the housing;

wherein escape grooves are formed on both side surfaces of the housing so that the locking protrusions are in a non-contact state with the housing when the lever is rotated; and

wherein ends of the escape grooves have final locking surfaces respectively on which the locking protrusions ride and are engaged when the lever is moved to the fitting completion position.

5. A lever-type connector, comprising:

a housing configured to be inserted and removed from a mating housing of a mating connector;

a lever, pivotally mounted on the housing, and that is pivotally operable between a temporary locking position and a fitting completion position of the lever, the lever comprising:

a pair of side plates arranged along surfaces on both sides of the housing; and

an operating portion that connects ends of the side plates; and

a lock portion, provided on the housing, and that locks the lever positioned at the fitting completion position,

wherein the housing is configured to be fitted to the mating housing by rotating the lever from a fitting start position to the fitting completion position; and

wherein lever disengagement prevention portions are provided on both sides of the housing so as to cover at least respective parts of the side plates of the lever positioned at the fitting completion position from outside;

wherein locking pieces are provided at tip ends of support shafts, projecting from both sides of the housing, to pivotally support the lever, the locking pieces extending in directions intersecting axes of the support shafts;

wherein each of pivot holes through which the locking piece is inserted and having an opening shape corresponding to outer shape of the locking piece are provided in respective one of the side plates to pivotally support the support shafts; and

wherein pressed protrusions, configured to be pressed by inner surfaces of the locking pieces when the lever is moved to the fitting completion position, are provided adjacent to the pivot holes of the lever.