A controlling apparatus for a transmission, the apparatus comprising: a first gear component (1200, 2200) which is configured to rotate based on a driving force provided from a driving component (1100, 2100); an output component (1300, 2300) which is configured to generate an operating force to control the transmission; an elastic component (1240, 2220) in which a first end (1241, 2221) is fixed and a second end (1242, 2222) is supported by the output component (1300, 2300); a driving force transfer component (1400, 2400) which is configured to be selectively coupled to the output component (1300, 2300) to transfer the driving force from the first gear component (1200, 2200) to the output component (1300, 2300); and a returning component (1600, 2600) configured to actuate the driving force transfer component (1400, 2400) to be separated from the output component (1300, 2300) when at least one returning condition is satisfied, wherein the output component (1300, 2300) includes a shaft (1310, 2310) configured to be connected to the transmission, and the first gear component (1200, 2200) and the driving force transfer component (1400, 2400) are configured to rotate around the shaft (1310, 2310), and wherein the controlling apparatus is characterized by a second gear component (1500, 2500) which is configured to rotate about the shaft (1310, 2310) to enable the driving force transfer component (1400, 2400) to be separated from the output component (1300, 2300), wherein the returning component (1600, 2600) is configured to rotate the second gear component (1500, 2500) to enable the driving force transfer component (1400, 2400) to be axially displaced along the shaft (1310, 2310) to separate the output component (1300, 2300) and the driving force transfer component (1400, 2400) from each other. a first gear component (1200, 2200) which is configured to rotate based on a driving force provided from a driving component (1100, 2100); an output component (1300, 2300) which is configured to generate an operating force to control the transmission; an elastic component (1240, 2220) in which a first end (1241, 2221) is fixed and a second end (1242, 2222) is supported by the output component (1300, 2300); a driving force transfer component (1400, 2400) which is configured to be selectively coupled to the output component (1300, 2300) to transfer the driving force from the first gear component (1200, 2200) to the output component (1300, 2300); and a returning component (1600, 2600) configured to actuate the driving force transfer component (1400, 2400) to be separated from the output component (1300, 2300) when at least one returning condition is satisfied, wherein the output component (1300, 2300) includes a shaft (1310, 2310) configured to be connected to the transmission, and the first gear component (1200, 2200) and the driving force transfer component (1400, 2400) are configured to rotate around the shaft (1310, 2310), and wherein the controlling apparatus is characterized by a second gear component (1500, 2500) which is configured to rotate about the shaft (1310, 2310) to enable the driving force transfer component (1400, 2400) to be separated from the output component (1300, 2300), wherein the returning component (1600, 2600) is configured to rotate the second gear component (1500, 2500) to enable the driving force transfer component (1400, 2400) to be axially displaced along the shaft (1310, 2310) to separate the output component (1300, 2300) and the driving force transfer component (1400, 2400) from each other.