JPS62200839U - - Google Patents

Description

[Brief explanation of the drawing]

Figure 1 shows that the transmitted torque is 10 according to this invention.
Longitudinal cross-sectional view of a small reducer weighing less than 000 g-cm, No. 2
The figure is a cross-sectional view of the small reducer taken along the line in Fig. 1, Fig. 3 is a longitudinal sectional view of the small reducer according to the second embodiment, and Fig. 4 is the right side of the eccentric shaft. 5 is a vertical cross-sectional view of a small reducer according to the third embodiment, FIG. 6 is a left side view of the output shaft, and FIG.
FIG. 8 is a vertical cross-sectional view of the small reducer according to the embodiment.
FIG. 7 is a cross-sectional view taken along line--line in FIG. 7; 10, 110, 210, 310: small reducer,
12, 312: Housing, 12a, 312a:
Right half of housing, 12b, 312b: Left half of housing, 14,314-1,314-2:
Sun gear, 20,320-1: Eccentric body, 320-
2: Rotating body, 22, 322: Input shaft, 23, 32
3: Axis line, 24,324: Output shaft, 26,326
-1,326-2: Planetary gear, 28,328: Eccentric shaft, 30,330: Center hole of eccentric body, 32,3
22-1, 322-2: Eccentric body support hole, 38,
338-1, 338-2: Output pin.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) A fixed sun gear having an inner cycloid tooth profile with n teeth, an eccentric shaft interlocked with the input shaft, and a sun gear with n-1 teeth that can mesh with the sun gear. Equipped with a cycloid planetary gear, a central hole into which an eccentric shaft is fitted, and a plurality of support holes arranged on a concentric circle, arranged eccentrically with respect to the axis of the input shaft by the same amount as the eccentric shaft. It is equipped with an eccentric body that rotates and revolves in response to the rotation of the input shaft, and a plurality of output pins located concentrically with the axis, and the output pins are slidably connected to the support holes of the eccentric body. A small speed reducer with a transmission torque of 10,000 g-cm or less, comprising: an output shaft configured to be loosely coupled to absorb rocking of an eccentric body; and a housing having a bearing portion for the output shaft. (2) The small speed reducer according to claim 1, wherein the sun gear and a part of the housing having a bearing for the output shaft are integrally molded from plastic with sliding properties. . (3) Utility model registration claim No. 1 in which the housing is constructed so that it can be assembled without a fastening member.
The small speed reducer according to item 2 or item 2. (4) The small reducer according to claim 3, wherein the housing is configured to be assembled without a tightening member by engaging the engagement protrusion and the engagement hole. (5) The small reducer according to any one of claims 1 to 4, wherein the output shaft is integrally molded with the output pin from plastic having a sliding property. (6) The small speed reducer according to any one of claims 1 to 5, in which the sun gear comprises a plurality of gear substitute pins protruding from the side surface of the housing in parallel with the axis. (7) The small speed reducer according to claim 6, wherein the output shaft, the eccentric body, and the eccentric shaft are configured to have relief in the axial direction. (8) The small speed reducer according to any one of claims 1 to 7, wherein the output shaft has a fitting hole into which the input shaft can fit. (9) The small speed reducer according to any one of claims 1 to 7, wherein the eccentric shaft has a fitting hole into which the output shaft can fit.