JP3217060U6 - Micro reducer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a micro reduction gear which can realize a large reduction ratio with only a single stage, has a large meshing ratio, has high impact resistance, is hard to be damaged, and has low noise.
An input side bearing 1, a housing 2, an output shaft 3, a slider 4, a cycloid gear 5, a cycloid gear bearing 6, an input shaft 7, an input side bearing 8, a pulley 9, a mounting plate 10, a pin 11, and a screw 12. The input side bearing 8 is mounted between the input shaft 7 and the housing 2, the output side bearing 1 is mounted between the output shaft 2 and the housing, and the cycloid gear bearing 6 is mounted between the cycloid gear 5 and the input shaft 7. Attached, the pulley 9 is attached to the input shaft 7, the input shaft 7 is an eccentric shaft, the cycloid gear 5 rotates coaxially with the eccentric portion of the input shaft 7, and the input shaft 7 is coaxial with the housing 2.
[Selection diagram] Fig. 1

Description

The present invention belongs to the field of mechanical transmission, and specifically relates to a micro speed reducer.

Currently, the development of intelligent robots is becoming faster and faster, and the rotary joint usually requires a speed reducer, but in the conventional speed reducer structure, it is common to decelerate by meshing gears, and the speed reducer. Since the volume of the structure is small, the gears are also manufactured small, so the overall strength is low and there is a risk of damage when subjected to impact. In addition, the conventional planetary gear structure and gear reduction structure are spatially limited, the reduction ratio of a single stage is small, and if you want to increase the reduction ratio, multi-stage deceleration is performed, so the transmission efficiency decreases and the gears At high speeds, the noise becomes very large because the transmission is performed by the meshing of the gears.

The technical problem to be solved by the present invention is designed by utilizing the transmission principle of the cycloid pin gear, which can realize a large reduction ratio with only a single stage, has a large meshing ratio, has a high impact resistance, and is damaged. It is difficult to provide, and the noise is low, and it is sure to solve the drawbacks of the conventional design.

The present invention is realized by the following technical proposals. It is a micro speed reducer, equipped with input side bearings, housings, output shafts, sliders, cycloid gears, cycloid gear bearings, input shafts, input side bearings, pulleys, mounting plates, pins, screws, and input side bearings with input shafts. Mounted between the housings, the output side bearings are mounted between the output shaft and the housing, the cycloidal gear bearings are mounted between the cycloidal gears and the input shafts, the pulleys are mounted on the input shafts and the input shafts are eccentric shafts. Yes, the cycloid gear rotates coaxially with the eccentric part of the input shaft, the input shaft is coaxial with the housing, the input side bearing is mounted between the input shaft and the housing, the output shaft rotates coaxially with the housing, and they The output side bearing is installed between.

As a preferred technical proposal, the input shaft, cycloid gear, housing, and pin constitute a one-stage cycloid pin gear reduction mechanism.

As a preferred technical proposal, the number of the cycloid gears is one, two or three.

As a preferred technical proposal, the slider has a cross structure, and engages with a cycloid gear and an output shaft, respectively, to form a linear kinematic pair, and both directions of motion are cross-shaped.

As a preferred technical proposal, the input shaft is driven by attaching a pulley and using belt transmission as a power input, by using a gear, or by being directly connected to a motor.

As a preferred technical proposal, the input shaft is coaxial with the output shaft, the input output is reversible, and it becomes an acceleration mechanism when the output shaft is used as an input end.

As a preferred technique, the notch of the cycloid gear engages with the boss of the slider to form a sliding kinematic pair, and the notch of the slider engages with the boss of the output shaft to form a sliding kinematic pair, both. The sliding directions are perpendicular to each other, forming a cross shape.

The beneficial effects of the present invention are as follows. The present invention utilizes the cycloid pin gear reduction principle to realize the advantages of a large reduction ratio in a single stage, low noise, and high impact resistance. Compared to a gear reducer of the same volume, it has a remarkable advantage in terms of performance.

In order to more clearly explain the embodiment of the present invention or the technical proposal in the prior art, the drawings necessary for the explanation of the embodiment or the prior art will be briefly described below, but of course, the drawings described below are the present invention. It is only a part of the embodiment of the above, and a person skilled in the art can conceive other drawings based on these drawings without any creative effort.
It is a schematic structural exploded view of this invention. It is a schematic diagram of the main structure of this invention. It is a schematic diagram of the cycloid pin gear structure of this invention. It is an overall schematic diagram of this invention. It is a schematic diagram of the belt input system of this invention. It is a schematic diagram of the gear input system of this invention. It is a schematic diagram of the direct connection input system of this invention.

All features disclosed herein, or steps of all disclosed methods or processes, may be combined in any way other than features and / or steps that contradict each other.

Unless otherwise specified, any of the features disclosed herein (including all of the added claims, abstracts and drawings) shall be replaced by other equivalents or alternative features with similar purposes. Can be done. That is, unless otherwise stated, each feature is merely an example of a series of equivalent or similar features.

As shown in FIG. 1, the micro-reducer of the present invention includes an output side bearing 1, a housing 2, an output shaft 3, a slider 4, a cycloid gear 5, a cycloid gear bearing 6, an input shaft 7, an input side bearing 8, and a pulley. 9. The mounting plate 10, pins 11, screws 12, etc., the input shaft 7 is an eccentric shaft, the cycloid gear 5 rotates coaxially with the eccentric portion of the input shaft 7, and the cycloid gear bearing 6 is mounted between them. The input shaft 7 and the housing 2 are coaxial, and the input side bearing 8 is attached between them, the output shaft 3 and the housing 2 rotate coaxially, and the output side bearing 1 is placed between them. It is attached.

As shown in FIGS. 2 and 3, in the micro speed reducer of the present invention, a one-stage cycloid pin gear transmission is configured by an input shaft 7, a cycloid gear 5, a housing 2, and a pin 11, and is distributed in the housing 2. Since almost all of the pins 11 are in contact with the cycloid gear 5, the meshing ratio is extremely high and the load bearing capacity is high.

As shown in FIGS. 1 and 3, in the micro speed reducer of the present invention, the cycloid gear 5 and the slider 4 slide with each other to form a sliding kinematic pair, and the slider 4 further slides with the output shaft 3 with each other. It constitutes a sliding kinematic pair, and both sliding directions are cross-shaped.

Further, the input shaft 7 is an eccentric shaft and rotates coaxially with the housing 2 under the constraint of the input side bearing 8, but the eccentric portion rotates coaxially with the cycloid gear 5 and the cycloid gear bearing 6, and the cycloid gear 6 And the housing 2 are constrained by the pin 11 to perform a cycloid pin gear motion, and when the input shaft 7 rotates once, the cycloid gear 5 rotates one tooth in the opposite direction.

Further, the output shaft 3 and the housing 2 are constrained by the output side bearing 1 and maintain coaxiality, whereas the cycloid gear 5 is a combination of revolving motion and rotation motion around the input bearing 7, and FIGS. As shown in 3, the notch of the cycloid gear 5 engages with the boss of the slider 4 to form a sliding pair, and the notch of the slider 4 engages with the boss of the output shaft 3 to form a sliding pair. , Both sliding directions are vertical and have a cross shape, and the rotation motion of the cycloid gear 5 is transmitted to the output shaft 3 as equivalent to the cross coupling.

Further, since the output shaft 3 is coaxial with the housing 2 and the housing 2 is coaxial with the input shaft 7, the output shaft 3 and the input shaft 7 are also coaxial, and when the housing 2 is fixed, the input shaft 7 and the output shaft 3 are also coaxial. When the rotation directions of the input shaft 7 and the housing 2 are opposite to each other and the output 3 is fixed, the rotation directions of the input shaft 7 and the housing 2 are the same.

As shown in FIG. 5, the rotation of the input shaft 7 of the present invention may be provided by a DC motor 102 in a belt transmission manner, and a motor pulley 104 is attached to the shaft of the DC motor 102. When the DC motor 102 rotates, the input shaft 7 is rotated by a belt transmission method using the motor pulley 104, the belt 103, and the pulley 9.

As shown in FIG. 6, the rotation of the input shaft 7 of the present invention may be provided by a DC motor 102 in a gear transmission system, and a motor pulley 104 is attached to the shaft of the DC motor 102. When the pulley 9 is changed to the gear 106 and the DC motor 102 rotates, the input shaft 7 is rotated by the meshing transmission method of the motor gear 105 and the gear 106.

As shown in FIG. 7, the rotation of the input shaft 7 of the present invention may be provided by the DC motor 102 in a direct-current connection manner, and the output shaft of the DC motor 102 becomes the input shaft 7 as described above. When the DC motor 102 rotates, the input shaft 7 is directly rotated.

Further, the mounting modes of FIGS. 6 and 7 are both sheet-shaped mounting modes, and are almost the same except that a belt transmission is used on one side and a gear transmission is used on the other side. In the case of belt transmission, the diameter of the pulley is used. It has the advantage that the one-step deceleration center distance can be increased and the design can be prevented without increasing the dimensions, and the noise at high speed of the DC motor is extremely small. The reduction ratio of the one-step gear is limited by the external dimensions and is almost 1, and there is no meaning other than making the mounting method into a sheet shape. Therefore, it is necessary to design as a two-step gear meshing method. However, as an input stage, the noise is not ideal.

Further, the mounting method shown in FIG. 7 has the main advantage of achieving both simplification and practical use by making the input and output coaxial, but on the other hand, it sufficiently increases the dimension of the length of the entire structure. Not compact.

The above is merely a specific embodiment of the invention, the scope of protection of the invention is not limited to these, and any changes or substitutions that can be conceived without the need for creative effort are the scope of protection of the invention. Belongs to. Therefore, the scope of protection of the present invention is based on the scope of protection limited to the scope of claims.

In the figure: 1, output side bearing 2, housing 3, output shaft 4, slider 5, cycloid gear, 6, cycloid gear bearing, 7, input shaft, 8, input side bearing, 9, pulley, 10, Mounting plate, 11, pin, 12, screw, 101, present invention (without pulley 9), 102, DC motor, 103, belt, 104, motor pulley, 105, motor gear, 106, gear.

Claims (7)

Input side bearing (1), housing (2), output shaft (3), slider (4), cycloid gear (5), cycloid gear bearing (6), input shaft (7), input side bearing (8), pulley (9), a mounting plate (10), a pin (11), a screw (12) are provided, and the input side bearing (8) is mounted between the input shaft (7) and the housing (2), and the output side bearing (1) is provided. ) Is mounted between the output shaft (2) and the housing (2), the cycloid gear bearing (6) is mounted between the cycloid gear (5) and the input shaft (7), and the pulley (9) is mounted on the input shaft (9). Attached to 7), the input shaft (7) is an eccentric shaft, the cycloid gear (5) rotates coaxially with the eccentric portion of the input shaft (7), and the input shaft (7) is coaxial with the housing (2). Yes, the input side bearing (8) is mounted between the input shaft (7) and the housing (2), the output shaft (3) rotates coaxially with the housing (2), and the output side bearing (1) is between them. ) Is attached to the micro speed reducer. The micro speed reducer according to claim 1, wherein the input shaft (7), the cycloid gear (5), the housing (2), and the pin (11) constitute a one-stage cycloid pin gear reduction gear reduction mechanism. The micro speed reducer according to claim 2, wherein the number of the cycloid gears (5) is one, two, or three. The slider (4) has a cross structure, and is characterized in that it engages with a cycloid gear (5) and an output shaft (3) to form a linear kinematic pair, and both directions of movement are cross-shaped. The micro speed reducer according to claim 1. The first aspect of claim 1, wherein the input shaft (7) is driven by attaching a pulley (9) to use belt transmission as a power input, using a gear, or being directly connected to a motor. Micro reducer. The first aspect of the present invention is that the input shaft (7) is coaxial with the output shaft (3), the input output is reversible, and it becomes an acceleration mechanism when the output shaft (7) is used as an input end. The micro reducer described in. The notch of the cycloid gear (5) engages with the boss of the slider (4) to form a sliding kinematic pair, and the notch of the slider (4) engages with the boss of the output shaft (3) to slide. The micro speed reducer according to claim 1, wherein the micro speed reducer constitutes a kinematic pair, and both sliding directions are perpendicular to each other to form a cross shape.

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