SETTING DEVICE AND HEATING APPARATUS HAVING THE SAME

摘要

A setting device for a control shaft of a thermostat includes a first coupling piece, a second coupling piece, and a knob member. The first coupling piece is sleeved on the control shaft to permit the control shaft to rotate therewith. The second coupling piece is loosely sleeved on the control shaft and has two studs engaged respectively in two slots of the first coupling piece to permit the first coupling piece to rotate therewith. The knob member has two tongues fitted in two gaps in the second coupling piece to permit the second coupling piece to be rotated with the knob member, whereby a force applied to rotate the knob member can be accurately transmitted to the control shaft for adjusting a setting temperature of the thermostat.

主权项

1. A setting device for a control shaft of a thermostat, the control shaft having an upper end and being rotatable about a shaft axis to adjust a setting temperature of the thermostat, said setting device comprising:
a first coupling piece having a first central bore which is configured to permit said first coupling piece to be fittingly sleeved on the upper end of the control shaft such that the control shaft is permitted to be rotated with said first coupling piece; a second coupling piece having a second central bore configured to permit said second coupling piece to be loosely sleeved on the upper end of the control shaft; a knob member; a first engagement mechanism configured to permit said first coupling piece to be rotated with said second coupling piece; and a second engagement mechanism configured to permit said second coupling piece to be rotated with said knob member.