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Gear motor and assembly method thereof

A gear motor, motor technology, applied in the direction of gear transmission, belt/chain/gear, transmission, etc., can solve the problem of rotor magnet position accuracy decline and so on

Active Publication Date: 2021-03-26
SUMITOMO HEAVY IND LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, in the gear motor of Patent Document 1, since the rotor magnet is fixed to the protruding portion of the input shaft of the speed reducer via the intermediate member, there is a problem that the position of the rotor magnet is caused by the dimensional tolerance of the intermediate member and the dimensional tolerance of the rotor magnet. Accuracy drops

Method used

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  • Gear motor and assembly method thereof
  • Gear motor and assembly method thereof
  • Gear motor and assembly method thereof

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Embodiment Construction

[0027] Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

[0028] figure 1 It is a sectional view showing the gear motor according to the embodiment of the present invention. figure 2 yes means figure 1 The front view of the stator core and rotor of the motor. image 3 is a sectional view showing the input shaft. Figure 4 Among them, (A) is a sectional view showing the housing, (B) is a sectional view showing the second internal gear, and (C) is a sectional view showing the first internal gear. In this specification, the direction along the central axis O1 of the input shaft 41 is defined as the axial direction, the direction perpendicular to the central axis O1 is defined as the radial direction, and the direction rotating around the central axis O1 is defined as the circumferential direction. .

[0029] The gear motor 1 of the present embodiment is a gear motor in which a motor 10 and a reduction gear 40 are...

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Abstract

The present invention provides a gear motor including a speed reducer and a motor, and capable of installing rotor magnets with high positional accuracy. The gear motor (1) includes a reduction gear (40) and a motor (10). Furthermore, the speed reducer has an internal gear, an external gear internally meshing with the internal gear, an input shaft (41) having a swing portion for swinging the external gear, a swing bearing (43) arranged between the external gear and the swing portion, and a supporting input shaft. The input bearing (51) of the shaft, the input shaft (41) has a protrusion (41b) that protrudes toward the motor side and is provided with the rotor of the motor, and the input shaft (41) has sequentially provided input bearings from the reducer side to the motor side The bearing arrangement part (w3) and the rotor arrangement part (w1) for the rotor arrangement, the outer diameter of the rotor arrangement part (w1) is less than or equal to the outer diameter of the bearing arrangement part (w3), and it is directly fixed on the rotor arrangement part (w1) There are rotor magnets (12b).

Description

[0001] This application claims priority based on Japanese Patent Application No. 2017-227398 filed on November 28, 2017. The entire contents of this Japanese application are incorporated herein by reference. technical field [0002] The present invention relates to a gear motor including a reducer and a motor and an assembly method thereof. Background technique [0003] In Patent Document 1 figure 2 A gear motor equipped with a reducer and a motor is described in . The input shaft (102) of the reducer of the gear motor protrudes toward the motor side, and the rotor of the motor is provided on the protruding part. The rotor is composed of an intermediate member fixed to the outer periphery of the protruding portion of the input shaft, and a rotor magnet fixed to the outer periphery of the intermediate member. [0004] Patent Document 1: Japanese Patent Laid-Open No. 2009-150520 [0005] However, in the gear motor of Patent Document 1, since the rotor magnet is fixed to th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02K7/00H02K1/22H02K7/116H02K15/00
CPCF16H49/001F16H57/023H02K7/116F16H2057/02073F16H57/031H02K7/114H02K7/085H02K7/003H02K5/04H02K11/21H02K5/163H02K15/00F16H1/06F16H57/022F16H63/30F16H37/041
Inventor 守谷幸次田村光扩
Owner SUMITOMO HEAVY IND LTD