How do I click the housing back in on the handle it has come away from

How do I click the housing back in on the handle it has partly come away from the main body. I have tried to click it back in but it wont budge & I don't want to damage it by forcing. It is still operational.

crwdns2934089:0crwdne2934089:0 crwdns2934093:0crwdne2934093:0

crwdns2934109:0crwdne2934109:0

crwdns2889612:0crwdne2889612:0 0
crwdns2934285:0crwdne2934285:0