Gearbox device with dual leak-proof interface

Abstract

This invention comprises a first housing, a second housing, an input shaft, an output shaft, a reduction gear, and a leak-proof ring. The first housing has a first annular outer mating surface, a first annular surface, a first annular inclined surface, and a first annular inner mating surface. The second housing has a second annular outer mating surface, a second annular surface, a second annular inclined surface, and a second annular inner mating surface. The input shaft extends from the first housing and connects to a power source; the output shaft extends from the second housing and connects to an application unit. The reduction gear connects the input shaft and the output shaft; the first and second annular outer mating surfaces contact each other to form an outer leak-proof interface. The first and second annular inner mating surfaces contact each other to form an inner leak-proof interface; a receiving space is formed between the first and second housings, which lies between the outer leak-proof interface and the inner leak-proof interface.

Claims

1. A speed reducer device with dual leak-proof interfaces, comprising a first housing, a second housing, a speed reduction mechanism, and a leak-proof ring; wherein: The first outer shell is provided with a first annular outer mating surface, a first annular surface, a first annular inclined surface, a first annular plane, and a first annular inner mating surface; the first annular surface is located between the first annular outer mating surface and the first annular inclined surface; the second outer shell is provided with a second annular outer mating surface, a second annular surface, a second annular inclined surface, a second annular plane, and a second annular inner mating surface; the second annular surface is located between the second annular outer mating surface and the second annular inclined surface; the first outer shell and the second outer shell are connected as one unit to form an internal space; the first annular surface, the first annular inclined surface, the first annular plane, the second annular surface, the second annular inclined surface, and the second annular plane form an accommodating space; The deceleration mechanism has an input shaft, an output shaft, and a deceleration section; the input shaft extends out of the first housing and is used to connect to a power source; the output shaft extends out of the second housing and is used to connect to an application section; the deceleration section is disposed in the internal space and connected between the input shaft and the output shaft; the leak-proof ring has a trapezoidal cross-section and is disposed within the receiving space; the first annular outer mating surface and the second annular outer mating surface are in contact and form an outer leak-proof interface; the first annular inner mating surface and the second annular inner mating surface are in contact and form an inner leak-proof interface; and the receiving space is located between the outer leak-proof interface and the inner leak-proof interface.

2. The speed reducer device with dual leak-proof interfaces as described in claim 1, wherein, Both the first and second outer shells are rigid structures.

3. The speed reducer device with dual leak-proof interfaces as described in claim 1, wherein: The leak-stopping ring has a top surface, two inclined sides and a bottom surface; the top surface is adjacent to but does not contact the first annular surface and the second annular surface; the two inclined sides respectively abut against the first annular inclined surface and the second annular inclined surface; and the bottom surface abuts against the first annular plane and the second annular plane.

4. The speed reducer device with dual leak-proof interfaces as described in claim 1, wherein: The leak-stopping ring has a top surface, two inclined sides and a bottom surface; the top surface contacts the first annular surface and the second annular surface; the two inclined sides abut against the first annular inclined surface and the second annular inclined surface respectively; and the bottom surface abuts against the first annular plane and the second annular plane.

5. The speed reducer device with dual leak-proof interfaces as described in claim 1, wherein, The leak-stopping ring system is a deformable structure.

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