Rotary hook construction for sewing machine and sewing machine

A rotary hook construction for a sewing machine, including a bobbin case rotatably housing a lower thread bobbin having the lower thread wound thereon, an inner rotary hook housing the bobbin case, and an outer rotary hook that rotates around the inner rotary hook in synchronism with an up-and-down movement of a sewing needle, the inner rotary hook having a needle drop hole formed in an upper front surface portion thereof, the outer rotary hook having a hook point member for capturing a loop of an upper thread, the rotary hook construction characterized in that

• the inner rotary hook has a recessed portion formed in the upper front surface portion and at a position deviated from the needle drop hole in a rotating direction of the outer rotary hook, the recessed portion opening forward and upward and downward and having a rear wall surface, and that
• the bobbin case has a thread take-up member provided thereon for directing the lower thread, paid out from the lower thread bobbin, toward the recessed portion of the inner rotary hook,
• wherein the lower thread paid out from the lower thread bobbin within the bobbin case is pulled out upward after passing through a hollow space of the recessed portion by way of the thread take-up member, and
• wherein rearward movement of the lower thread passing through the hollow space of the recessed portion is restricted by the rear wall surface of the recessed portion.