Connector

1. A connector, comprising:

a housing connectable with a mating housing;

at least one lock arm including a support projecting from the housing and a resiliently deformable arm portion cantilevered substantially forward in a connecting direction from the support, the arm portion being adapted to hold the two housings in a connected state by a locking movement of the arm portion when the two housings are connected properly;

at least one pressable portion unitary with the housing and the support, the pressable portion being located behind the support in the connecting direction;

a front wall at least partly covering a free end of the arm portion; and

a rear wall at least partly covering the support and an end of the arm portion adjacent the support, the rear wall being spaced from the front wall so that an unlocking space is defined between the front wall and the rear wall for permitting entry of a finger for deforming the arm portion, and a rearwardly facing finger stop on the rear wall stepped up from the pressable portion, the finger stop preventing a finger placed on the pressable portion in a connecting process from inadvertently moving forward and into contact with the arm portion.

2. The connector of claim 1 , wherein a distance between opposite widthwise sides of the pressable portion in a width direction orthogonal to the connecting direction substantially equals or exceeds a distance between opposite widthwise sides of the arm portion.

3. The connector of claim 1 , wherein the rear wall is at least as high as the front wall in a height direction orthogonal to the connecting direction.

4. The connector of claim 1 , wherein:

the arm portion includes two arm bodies spaced apart in a width direction orthogonal to the connecting direction; and

the at least one pressable portion comprises two pressable portions substantially aligned with the respective arm bodies.

5. The connector of claim 1 , wherein the pressable portion includes at least one pressable surface inclined toward a side toward which the support projects.

6. A connector, comprising:

a housing connectable with a mating housing,

at least one lock arm cantilevered on the housing and extending from a base end to a leading end that is adapted to hold the housing in a connected state,

a first wall formed on the housing and arranged to cover the base end of the lock arm,

a second wall formed on the housing and arranged to cover the leading end of the lock arm, an unlocking space being defined between the first wall and the second wall and being accessible to perform an unlocking operation to an intermediate part of the lock arm; and

left and right protection walls projecting from the housing and arranged at opposite sides of the lock arm to close the unlocking space, the protection walls being cut off to positions more inward than the first and second walls and more outward than the intermediate part of the lock arm, thereby forming at least one step, a first inclined surface inclined from a rear end of the step to an upper end of the first wall and a second inclined surface inclined from the front end of the step to an upper surface of the second wall, wherein

the first and second inclined surfaces guide a finger into the unlocking space.

7. The connector of claim 6 , wherein the mating housing has a mating lock portion engageable with the lock arm for locking, the mating lock being arranged outside the unlocking space in a connected state of the two housings.

8. The connector of claim 7 , wherein the step is displaced from the mating lock so that the mating lock is hidden when viewed sideways in the connected state of the two housings.