Abstract: Amounting structure for an operation knob includes: a lever shaft including at least one locking claw formed integrally with the lever shaft; and a knob to be mounted onto the lever shaft, the knob having an engagement hole to be brought into engagement with the locking claw.

Abstract: The present invention includes: core pin that forms fitting hollow part of an operating lever in the operating knob in addition to forming thin-diameter part including upper inclined surface and lower inclined surface on the upper part of the operating knob; upper die and lower die that form a periphery of the upper part and the lower part of operating knob; and intermediate slide core which is advanceable and restorable towards core pin between upper die and lower die, and has abutting part of upper inclined surface of core pin, as well as step part that is formed in the lower part of the abutting part and forms thin-walled part in the base of check claw.

Abstract: A mounting construction ensures to fix a shift knob to a lever shaft easily and promptly with a single assembly operation. The lever shaft 1 is formed with a circumferential groove 1a therein and has a rotation-prohibiting projection 1g thereon. A support body 2 is formed with first fastening clicks 2d and 2d and second fastening clicks 2e and 2e, which first and second clicks project on an upper end portion thereof. The support 2 is formed with a rotation preventing groove 2f at a lower end portion thereof, which groove 2f engages the rotation preventing projection 1g. The lever shaft 1 is inserted into the support body 2 so that the fastening clicks 2d and 2d of the support body 2 engage the circumferential groove 1a in the lever shaft 1 to securely fix to the lever shaft 1. The shift knob 3 is provided with a blind hole 3b and horizontally extending engagement holes 3c at a lower portion of the shift knob 3.