JPS6149638A - Warren motor - Google Patents

Abstract

PURPOSE:To enable an oil duct to be formed in stable dimension and high productivity without using any special appliance, by a method wherein a face of slope is formed on the circumferential face at the end section of a reduction gear shaft and the oil duct is formed in a space between the shaft hole of the gear shaft and the face of slope. CONSTITUTION:In a Warren motor where a reduction gear shaft 8 is fixed to shaft bearing plates 9, 10 and a reduction gear 7 is movably fitted on the shaft 8 and oil basins 11, 12 are arranged outside the shaft bearing plates 9, 10 and spaces 13, 14 for oil storage are formed, a slope face 84 is formed on the circumferential face at least at one end of the reduction gear shaft 8. And the space between the slope face 84 and the shaft 8. And the space between the slope face 84 and the shaft hole 91 of the reduction gear shaft 8 is used for an oil duct 22, and the exterior and interior of the shaft bearing plate 9 are communicated together, and lubricating oil 15 stored in the space 13 for oil storage is fed into a space 21 between the reduction gear shaft 8 and the reduction gear 7.

Description

[Detailed Description of the Invention] [Technical Field of the Invention] The present invention includes a two-pole shaded synchronous motor, comprising a reduction gear train provided between a rotor shaft and an output shaft of a rotor,
A shaft support plate having circular shaft holes provided at both ends of a cylindrical reduction gear shaft into which the gears of the reduction gear train are loosely fitted and which fit and support the ends of the reduction gear shaft; A Warren motor is provided with an oil reservoir plate arranged in parallel on at least one side and holding lubricating oil in a gap between the shaft support plate and the shaft support plate, wherein the lubricating oil is disposed between the reduction gear shaft and the gear loosely fitted therein. It relates to things that have been allowed to infiltrate.

[Prior art]

Conventionally, there has been a Warren motor of this type as shown in FIG. In Figure 4, (1) is the iron core, (2) is a coil wound around one end of the iron core (1), and [3] is the iron core (1).
), and a rotor (4) is provided inside the cover (3) at a position where it is subjected to the alternating magnetic field formed on the core (1) by the coil (2). There is.

(5) is the rotor axis of rotor (4), (6) is the rotor axis (
5) is the rotor gear fixed to the rotor gear, (7) is the rotor gear fixed to the rotor gear (6
), (8) is a cylindrical reduction gear shaft into which the reduction gear (7) is loosely fitted, (9) and (10) are into which the rotor shaft (5) is loosely fitted, and the reduction gear shaft ( The shaft support plates (11) and (12) fixedly support both ends of the shaft support plate (9).
), shaft support plates (9) arranged in parallel and opposite to (10),
(10) with a slight gap (13).

(14) is an oil sump plate that holds lubricating oil (15), these shaft support plates (9), (10) and a sump plate (11),
(12) are fixed in parallel with each other at regular intervals by supports (16). (17) is an output shaft, and one end is provided with an output shaft gear (19) connected to a reduction gear train (18) (including a reduction gear ('7), the details of which are not shown), and the other end is provided An output gear (20) is provided for transmitting the rotor of the rotor (4) to the outside of the cover (3). In addition, (91
).

- (101) is a circular shaft hole provided in the shaft support plates (9) and (10) for press-fitting and fixing the reduction gear shaft (8).

Next, the operation will be explained. When an alternating current voltage is applied to the coil (2), an alternating magnetic field is formed in the iron core (1), and the rotor (4) is affected by this alternating magnetic field, reducing the speed reduction gear train (18) including the heavy speed gear (7). ), is transmitted to the output gear (20) via the output shaft gear (19) and the output shaft (17).

The rotor shaft (5) is loosely fitted into the shaft support plates (9) and (10), and there is a gap between them, so the lubricating oil (15)
) enters this gap and smoothes the rotation of the rotor shaft (5).

However, the gear shaft of the reduction gear train (18) is connected to the reduction gear (7).
), the lubricating oil in the oil sump gaps (13) and (14) is 15) could not enter the gap between the reduction gear (7) and the reduction gear shaft (8), so lubricating oil had to be separately injected into this gap.

Moreover, as this lubricating oil flows out and disappears as time passes, the friction between the reduction gear (7) and the reduction gear shaft (8) increases, and the center of the reduction gear (7) and the reduction gear shaft (8) increase. 8) becomes severely worn, causing both to seize up.In order to prevent this problem, an axial groove ( 81), an axial cut groove (82) is formed on the circumferential end of the reduction gear shaft (8) as shown in Fig. 6, or a shaft support plate is formed as shown in Fig. 7. (9)
The oil sump interval (13) or (13), (1
It has been proposed in the past to allow the lubricating oil (15) in both of 4) to infiltrate into the gap between the reduction gear (7) and the reduction gear shaft (8).

However, these reduction gear shafts (8) and shaft support plates (9
) The diameter of the shaft hole (91) is about 1 mm,
As shown in Figures 5 and 6, there is a groove (81) in the reduction gear shaft (8).
A special machining process is required to form the axial grooves (82), and as shown in Fig. 7, the axial grooves (92) are formed in the shaft hole (91).
In order to form a press tool having a special protrusion corresponding to the groove (92), it is difficult to manufacture the tool, and it is also difficult to obtain stable dimensions, and both methods have the disadvantage of poor productivity. Ta.

[Summary of the invention]

This invention was made to eliminate the drawbacks of the conventional ones as described above, and includes forming an inclined surface on the circumferential surface of at least one end of the reduction gear shaft, and forming a slope between the inner circumference of the shaft hole and the inclined surface. By forming the gap, it is possible to extremely easily create an oil passage that communicates the oil sump gap between the shaft support plate and the oil sump plate with the gap between the reduction gear shaft and the reduction gear loosely fitted thereto. The object of the present invention is to provide a Warren motor that can be formed with stable dimensions and high productivity without requiring special press tools.

[Embodiment of the Invention] An embodiment of the present invention will be described below with reference to FIGS. 1 to 3. One end of the reduction gear shaft (8) is press-fitted and fixed to the shaft support plate (10) as in the past, but this shaft support, plate ( The oil sump gap (13) between ω and the oil sump plate (11) arranged in parallel and opposite thereto is defined as the gap between the reduction gear shaft (8) and the reduction gear (7) loosely fitted thereto ( 21) to communicate with the oil passage (2
2) is provided.

In this embodiment, the oil passage (22) is a cylindrical reduction gear! [h
(8) from the end surface (83) to the shaft support plate (
9) By forming a slope (84) extending inwardly and press-fitting it into the circular shaft hole (91) provided in the shaft support plate (9), the slope (84) is formed on the inner circumference of the shaft hole (91). ). The oil passage (22) communicates with the oil sump gap (13), and the lubricating oil (5) in the gap (13) passes through this oil passage (22) and connects the reduction gear shaft (8) and the reduction gear ( '7)
It penetrates into the gap (21) between. If the oil passage (22) is provided on the shaft support plate (10) side, the reduction gear shaft (8
) may be formed at the other end with a slope similar to the slope (84), and this may be press-fitted into the circular shaft hole (101) of the shaft support plate (10). In addition, it is also possible to form the above-mentioned slopes on both ends of the reduction gear shaft (8) and form oil passages (22) on both the shaft support plates (9) and (10). The lubricating oil (15) in the oil sump gaps (13) and (14) flows from both ends of the reduction gear fill (8) to the bottom of the gap between the reduction gear (7) and the bottom of the cover (3). If a gap is provided or a communication port (both not shown) is provided, the lubricating oil (also not shown) accumulated at the bottom of the cover (3) can be drained into the oil reservoirs J Kawahara (13) and (14). It is possible to cycle L1.

Although the above embodiments have been described with respect to a specific reduction gear shaft (8), the present invention can be similarly applied to other reduction gear shafts of the reduction gear train (18). Further, the number of slopes formed at the end of the reduction gear shaft is not limited to one, but may be plural.

〔Effect of the invention〕

As described above, the present invention forms a slope on the circumferential surface of a cylindrical reduction gear shaft (at both ends), fits this into a circular shaft hole of a shaft support plate, and connects the inner periphery of this shaft hole with a 1YJ mark. Since the oil passage is formed between the slope and the slope, the oil passage can be formed simply by forming the slope at the end of the reduction gear shaft, which eliminates the need for special processes and press tools as in the past. This has the effect that the oil passage can be extremely easily formed with stable dimensions and high productivity without any problems.

[Brief explanation of drawings]

FIG. 1 is a perspective view of a reduction gear shaft according to an embodiment of the present invention, FIG. 2 is a longitudinal sectional view of an embodiment of the invention equipped with the reduction gear shaft of FIG. 1, and FIG. Figure 4 is a vertical cross-sectional view of a conventional Warren motor.
Figures 5 and 6 are respectively perspective views of conventionally proposed reduction gear shafts, and Figure 7 is a diagram showing the shape of the shaft hole of the shaft support plate conventionally proposed. The corresponding part is shown. In the figure, (4) is the rotor, (5] is the rotor shaft, and [7] is the rotor shaft.
is a reduction gear, (9) and (10) are shaft support plates, (11
). (12) is temporary oil sump, (15) is lubricating oil, (8) is reduction gear shaft, (13), (14) is oil sump gap, (18) is reduction gear train, (22) is oil passage , (91), (101)
is the shaft hole, and (84) is the slope. Agent Patent Attorney Masuo Oiwa Figure 2n Figure 3 Figure 7

Claims (1)

[Claims] (1) A reduction gear train is provided between the rotor shaft and the output shaft of the rotor, and the reduction gear shaft is provided at both ends of a cylindrical reduction gear shaft into which the gears of the reduction gear train are loosely fitted. A shaft support plate having a circular shaft hole that fits and supports the end of the gear shaft; and an oil reservoir that is arranged in parallel with at least one of the shaft support plates and holds lubricating oil in the oil reservoir gap between the shaft support plate and the shaft support plate. In the Warren motor equipped with a plate, a slope is formed on the peripheral surface of at least one end of the reduction gear shaft, and the oil sump gap is provided between the inner periphery of the shaft hole and the slope. A waren motor characterized in that an oil passage is formed to communicate with a gap between a loosely fitted reduction gear and a reduction gear.