The present invention provides a latching mechanism for an x ray tube assembly comprising a rotary plate a first spring loaded latch and a second spring loaded latch which are disposed diametrically. The rotary plate comprises a first receiving portion and a second receiving portion spaced from each other by 90°. The first spring loaded latch configured to be pressed removably into the first receiving portion to lock the x ray tube assembly in a first position and the second spring loaded latch is configured to be pressed removably into the second receiving portion to lock the x ray tube assembly in a second position. According to the present invention it is possible tomake manufacturing tolerance control and assembly of the x ray imaging system much simpler and easier.
