JP4347448B2 - Simple reducer - Google Patents

Description

BACKGROUND OF THE INVENTION
[0001]
The present invention relates to a simple speed reducer, and more particularly to a simple speed reducer that reduces the number of rotations of a motor to save power consumption.
[Problems to be solved by the invention]
[0002]
(1) Conventionally, rotating machines such as a blower, an air conditioner, a pump, and a compressor driven by a motor are directly connected by a direct coupling coupling and rotate at a constant speed. Recently, from the viewpoint of energy saving, the rotation control of motors, which are driving machines for fluid machinery and transport machinery, including fans, air conditioners, pumps, compressors, etc., is controlled by variable speed couplings, motors by power electronics, etc. This is implemented by a variable speed inverter.
[0003]
(2) However, these rotary machines, it is not necessary to the constant speed rotation at all times as the case, for example, is at the air conditioner or the like, if at night or the like may be driven by dropped rotation There is.
[Means for Solving the Problems]
[0004]
The first gist of the present invention is a simple speed reducer in which a coupling directly connecting a motor and a rotary machine is removed and a speed reducer is provided in that portion.
[0005]
The second gist of the present invention comprises a belt having a internal gear produced a reduction mechanism with a soft soft material member, an inner ring having an external gear disposed concentrically within the belt pressing on the outer side of the belt A simple speed reducer characterized in that the belt is pressed against the inner ring by the pressure of the pressure roller and the inner ring is decelerated by the pressure roller.
[Effects of the Invention]
[0006]
Thus, in the simple speed reducer according to the present invention, the speed reduction mechanism provided in the coupling of the motor and the rotary machine, the belt having internal gear was pressed by the pressing roller, the rotational speed 20% to 30 % To achieve the above-mentioned purpose.
【Example】
[0007]
An embodiment in which a simple reduction gear according to the present invention is connected to a pump 40 will be described. In Figures 1-5, a simple speed reducer A according to claim 1, Ru provided between the drive shaft m and the pump 40 of the motor M.
[0008]
As shown in FIGS. 1 and 5, in the said simple reduction gear A, a driving dynamic side fixed frame 12 to have a circular opening 12a of the required diameter in the center, driven to have a circular opening 14a of the required diameter at the center Side fixing frames 14 are provided parallel to the driving side fixing frame 12 at a required interval.
[0009]
To the drive side stationary frame 12 closer to and from the drive side fixed frame 12 and the driven-side fixed frame 14, provided with a drive wheel 18 to have a gear 18a around the large diameter cylindrical portion, the the small-diameter cylindrical portion 18a It penetrates into the circular opening 12a and penetrates the drive shaft 16 into the small diameter cylindrical part 18a.
[0010]
Adjacent the drive shaft wheel 18 between the drive-side fixed frame 12 and the driven-side fixed frame 14, the center of the drive shaft 18 at regular intervals around the large-diameter cylindrical portion 22a of the driven wheel 22 A driven wheel 22 having through holes 22b, 22b,... Drilled radially is provided so as to cover the drive wheel 18, and the small-diameter cylindrical portion 22c is formed in the circular opening of the driven- side fixed frame 14. penetrate into 14a, the transparent hole 22b, loosely fitted respectively pins 24, 24 ... in the 22b ..., provided respectively with gears 26 to the gear 18b meshing with the inner end of the pin 24, 24 ... .
[0011]
The driven shaft 16a penetrating in the small-diameter cylindrical portion 22c so as to adjacent to the inner end of the drive shaft 16, a soft soft material member made belt 28 provided on the outer end of the pin 24, 24 ..., the space 20 It is located closer to the driven side fixed frame 14 (pump side). Therefore, these pins 24, 24... Are arranged radially toward the center of the drive shaft 16 .
[0012]
The shafts 30a and 30a of the pressing roller 30 are fitted into upper grooves (not shown) between the driving side fixing frame 12 and the driven side fixing frame 14, and are fixed by stopper pins 32 and 32. the roller 30 is contacted to the outside of該柔soft material member made belt 28, and always presses constituting the該柔soft material member made belt 28.
[0013]
In FIG. 5, when the motor M and the pump 40 are rotated, the pressing roller 30 presses the flexible material belt 28, and the flexible material belt 28 presses the pins 24, 24,. The gear 26 meshes with the gear 18 b of the drive shaft wheel 18 to rotate the driven wheel (pump side wheel) 22.
[0014]
In the case of 20% decelerated rotation, when the rotational speed of the motor M is 50 Hz ( 1.500 rpm) and 60 Hz ( 1.800 rpm), the rotational speed of the pump 50 is 1.200 rpm and 1.440 rpm. The gear ratio is 40T on the motor M side and 50T (ie, 4: 5) on the pump 40.
[0015]
In this case, since the presser roller 30 are fixed by the stopper pin 3 2, the drive shaft wheel 18 of the motor 10 side rotates, the pin that gear 18a is in該柔soft material member made belt 28 since sequentially meshed with the gear 26 provided via the 2 4,該柔soft material member made belt 28 is rotated at a reduced speed. As described above, when the rotational speed is reduced by 20%, the power consumption becomes 52 %, which saves energy.
【The invention's effect】
[0016]
According to the present invention, since the simple reduction gear A as a reduction mechanism is provided between the motor M and the pump 40, the rotational speed of the motor M can be reduced very easily by a device having a simple configuration. Consumption will be reduced, and energy will be saved.
[Brief description of the drawings]
[0017]
1 is a cross-sectional schematic of an embodiment of a simple speed reducer according to claim 1, wherein according to the present invention.
[Figure 2] belt having internal gear from the simple reduction gear of FIG. 1, in the embodiment of the II-II line portion enlarged perspective schematic side view of the speed reduction mechanism taken out inner Wa及 beauty pressing row La having external gear is there.
FIG. 3 is a partially transparent schematic side view in which a pin and a pressing roller are removed from the embodiment of the speed reduction mechanism of FIG. 2;
FIG. 4 is a schematic side view schematically showing a state in which the belt is pressed by a pressing roller and the internal gear of the belt is engaged with the external gear of the inner ring in the embodiment of the speed reduction mechanism of FIG. 2;
FIG. 5 is a schematic front view showing a state in which the simple speed reducer according to claim 1 of the present invention is connected to a pump.
[Explanation of symbols]
[0018]
M: Motor;
m ... motor drive shaft;
A ... Simple reducer;
12 ... Drive side fixed frame:
12a ... circular opening;
14 ... driven side fixed frame;
14a ... circular opening;
16 ... drive shaft;
16a ... driven shaft;
18 ... drive wheel;
18a ... small diameter cylindrical part;
18b ... gears;
20 ... space;
22 ... driven wheel;
22a ... flange;
22b ... through hole;
22c-small diameter cylindrical part;
24 ... pin;
26 ... gears;
28 ... soft soft material member made belt;
30 ... Pressing roller;
30a ... axis;
32 ... stopper pin;
40: Pump.

Claims (1)

A drive moving side fixed frame to have a circular opening of predetermined diameter centered, has a circular opening of predetermined diameter in the center, and the driven-side fixed frame provided in parallel at predetermined intervals from the drive-side fixed frame, small-diameter cylindrical portion is penetrating into the circular opening of the drive-side fixed frame, having a gear around, it is disposed on the drive side fixed frame close between the drive-side fixed frame and the driven-side fixed frame The drive wheel has a circular opening with the required diameter at the center, and a through-hole is formed around the large-diameter cylindrical portion that radiates toward the center at regular intervals, covering the drive wheel. a driven wheel having a et a ring-shaped flange, a drive shaft penetrating the through mouth of the drive wheel, the said inner end so as to adjacent to the inner end of the drive shaft and the through hole of the driven wheel It is penetrated in the through-hole of the small-diameter cylindrical portion And shaft, is through the respective pin holes of the periphery of the ring-shaped flange, and pin is disposed toward the center of the drive shaft, provided at the inner end of the pin, to the gear meshing of the drive wheel a gear, disposed from the drive-side fixed frame between the drive-side fixed frame and the driven side stationary frame, a flexible material made of belt mounted for contact with the outer end of the respective pin, the drive The pressure roller comprises: a shaft having a stopper pin at both ends, and a pressure roller provided at the center of the shaft, and penetrating into a through hole formed in an upper portion of the side fixed frame and the driven side fixed frame. There always pressed in contact with the outside of the flexible material made belt, simple speed reducer for a slow rotating the driven wheel.

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