TWM671681U - Speed reduction device - Google Patents

Abstract

The invention is a speed reduction device, which is composed of an input member, a driving gear set connected to the input member, a passive gear set coaxially arranged with the driving gear set, and an output member connected with the passive gear set. The gear ratios of the driving gear set and the passive gear set driven coaxially are designed to be different to form a speed difference, and a dynamic fulcrum resistance is generated through a structure in which the coaxial driving planetary gears and the passive planetary gears are rigidly connected, thereby achieving a speed reduction effect, greatly simplifying the structure, effectively reducing the material, and having the effect of increasing the torque output.

Description

Speed reduction device

This invention belongs to the technical field of a deceleration device, specifically, a deceleration device that forms a dynamic fulcrum through a speed difference, thereby greatly simplifying the structure and effectively reducing the volume of the deceleration device, while effectively increasing the torque output.

Since the motor has a high speed, in some fields, when it is directly driven, it is easy to have too fast speed and cannot provide a large torque, and cannot achieve the predetermined working purpose. Therefore, in these fields, a speed reduction device is generally installed on the motor output shaft to reduce the speed and output a large torque. There are many types of speed reduction devices. For example, the new patent application No. 097213180 "Speed Reduction Device" in Taiwan is the most common planetary gear structure speed reduction device.

However, existing reduction devices, such as Taiwan's patent application No. 102200801 "Planetary Gear Reducer", have a planetary first gear and a second gear on the gear frame, wherein the first gear meshes with the sun gear and the fixed first ring gear, and the second gear meshes with the sun gear and the second ring gear connecting the transmission member. It uses a fixed ring gear as the fulcrum of the planetary gears, allowing the planetary gears to revolve relative to the sun gear, and produces a reduction effect through the gear ratio between the sun gear and the outer planetary gears. This will increase the outer diameter and volume of the entire reducer. Moreover, even if double planetary gears are used, the torque only acts on one set of sun gears, which invisibly affects its output torque.

In other words, the structural design of the existing deceleration device still needs to be improved, resulting in defects in use. How to solve the above-mentioned problems is what the industry and users expect, and is also what this invention intends to explore.

In view of the above shortcomings and needs, the creator believes that further corrections are necessary. Therefore, with many years of experience in related technologies and product design and manufacturing, he has conducted research and innovation on the above shortcomings and actively sought solutions. After continuous efforts in research and trial production, he finally successfully developed a deceleration device to overcome the inconvenience and trouble caused by the existing structure.

Therefore, the main purpose of this invention is to provide a deceleration device, which can utilize the gear ratio difference between the driving gear set and the passive gear set to form a speed difference, so that a dynamic fulcrum is generated between the driving planetary gear and the passive planetary gear, and they revolve relative to the driving sun gear and the passive sun gear respectively, thereby achieving the effect of deceleration.

In addition, another main purpose of the present invention is to provide a deceleration device which can greatly simplify the structure and effectively reduce the volume while having the effect of increasing the torque output.

Based on this, this work mainly achieves the above-mentioned purpose and its effects through the following technical means, which include:

An input member, which can provide an initial power input;

A driving gear set having a first wheel frame pivotally rotating relative to the input member, the driving gear set having a driving sun gear fixed to the input member, and the driving gear set having a plurality of driving planetary gears meshing with the driving sun gear and pivotally arranged on the first wheel frame, so that the driving sun gear can drive the driving planetary gears to generate a first rotation speed;

A passive gear set has a second wheel frame pivotally rotating relative to the input member, and the second wheel frame can be connected and rotated with the first wheel frame, and the passive gear set has a passive sun gear fixed to the input member, and the passive gear set has a plurality of passive planetary gears meshing with the passive sun gear and pivotally arranged on the second wheel frame, wherein the passive planetary gears are respectively opposite to the aforementioned active planetary gears, and the passive planetary gears are respectively opposite to the aforementioned active planetary gears. When the active planetary gears and the passive planetary gears are respectively connected rigidly, the passive sun gear can drive the passive planetary gears to generate a second speed, and the gear ratio of the active gear set is not equal to the gear ratio of the passive gear set, so that there is a speed difference between the first speed of the active planetary gears and the second speed of the passive planetary gears, and a dynamic fulcrum is generated by using the speed difference;

An output member is connected to the driven gear set, and the output member can utilize the dynamic fulcrum to generate a decelerated power output.

Thus, through the specific implementation of the above-mentioned technical means, the invention can utilize the different tooth ratios of the coaxially driven active gear set and the passive gear set to form the speed difference, and through the coaxial pivoted active planetary gears and the passive planetary gears are rigidly connected to generate the resistance of the dynamic fulcrum, so that the rotating active planetary gears and the passive planetary gears can respectively revolve relative to the active sun gear and the passive sun gear, thereby achieving the purpose of deceleration. It can greatly simplify the structure and effectively reduce the material volume, and at the same time has the effect of increasing the torque output, thereby increasing the added value of the product and improving its economic benefits.

This invention also utilizes the following technical means to further achieve the aforementioned purposes and effects; such as:

Preferably, the input member may be an output shaft of a motor, and the output shaft is used to assemble the active sun gear and the passive sun gear.

Preferably, the first wheel frame axle center of the active gear set has an axle groove for being pivotally mounted on the output shaft using a bearing.

Preferably, the first wheel frame of the active gear set has a plurality of equidistant first connecting posts, and the second wheel frame of the passive gear set has a plurality of second connecting posts relative to the first connecting posts, so that the first and second wheel frames can be locked relative to each other using a locking piece.

Preferably, the first wheel frame of the driving gear set is formed with a plurality of equidistant first axial holes, and the second wheel frame of the driven gear set has a plurality of second axial holes relative to the first axial holes, and the first and second axial holes respectively relative to each other are provided with a shaft rod commonly spanned for pivoting the adjacent driving planetary gear and the passive planetary gear.

Preferably, a first bearing and a second bearing are respectively disposed between the driving planetary gears and the passive planetary gears and the shafts.

Preferably, the output member may be an outer tooth edge formed on the periphery of the second wheel carrier of the driven gear set.

In order to enable you, the Review Committee, to further understand the composition, features and other purposes of this creation, the following is a preferred embodiment of this creation, and is described in detail with diagrams, so that those familiar with the technical field can implement it in detail.

In the specific embodiments of the invention and its components illustrated in the accompanying drawings, all references to front and back, left and right, top and bottom, upper and lower, and horizontal and vertical are only used for convenience of description and do not limit the invention or its components to any position or spatial direction. The dimensions specified in the drawings and the description may be changed according to the design and needs of the invention without departing from the scope of the patent application of the invention.

The structure of the speed reduction device of the present invention is as disclosed in the first and second figures, and is composed of an input member (10), a driving gear set (20) connected to the input member (10), a passive gear set (30) coaxially arranged with the driving gear set (20), and an output member (40) connected to the passive gear set (30);

As for the detailed structure of the preferred embodiment of the speed reduction device of the present invention, please refer to the third and fourth figures. The input member (10) can be an output shaft (11) of a motor. The output shaft (11) has a shaft seat section (12) and a mounting section (13) for assembling the driving gear set (20) and the driven gear set (30) to provide an initial power input with a rotation speed A.

The active gear set (20) has a first wheel frame (21), the axis of the first wheel frame (21) has an axial groove (22) for being mounted on the shaft seat section (12) of the output shaft (11) by a bearing (23), and the active gear set (20) is fixedly provided with an active sun gear (25) on the mounting section (13) of the output shaft (11), and the first wheel frame (21) has a plurality of equidistant first connecting columns (24), and the first wheel frame (21) is formed with a plurality of first connecting columns (24) connected to the first connecting columns. The connecting column (24) has staggered and equidistant first shaft holes (26) for respectively installing a shaft rod (27), and each shaft rod (27) is respectively provided with a first bearing (28) corresponding to the active sun gear (25), and each shaft rod (27) is respectively provided with an active planetary gear (29) by utilizing the first bearing (28), and the active planetary gears (29) can be engaged with the active sun gear (25) for transmission, so that the active sun gear (25) can drive the active planetary gears (29) to generate a first rotation speed;

The passive gear set (30) has a second wheel frame (31), the axis of the second wheel frame (31) has an axial groove (32), and the passive gear set (30) is fixedly provided with a passive sun gear (35) on the mounting section (13) of the output shaft (11) and abutting against the active sun gear (25), wherein the outer diameter of the active sun gear (25) is not equal to the outer diameter of the passive sun gear (35), and the passive sun gear (35) has a cam portion (35) corresponding to and inserted into the axial groove (32). 50), the second wheel frame (31) has a plurality of second connecting posts (34) corresponding to the first connecting posts (24), so that the second and first connecting posts (34, 24) of the second and first wheel frames (31, 21) can be locked by a plurality of locking pieces (37), so that the first and second wheel frames (21, 31) of the main and passive gear sets (20, 30) can be assembled into one body, and the second wheel frame (31) has a plurality of second axial holes (36) corresponding to the first axial holes (26) for the shafts ( 27) is provided at the other end, and a second bearing (38) corresponding to the passive sun gear (35) is provided on each of the shafts (27), and each of the shafts (27) is provided with a passive planetary gear (39) by using the second bearing (38), and the passive planetary gears (39) can be engaged with the passive sun gear (35) for transmission, so that the passive sun gear (35) can drive the passive planetary gears (39) to generate a second rotation speed, and the passive planetary gears (39) on the same shaft (27) can be driven by the passive planetary gears (39) to generate a second rotation speed. ) and the adjacent active planetary gear (29) can be an integral structure or a combined steel structure, and the gear ratio of the active gear set (20) is not equal to the gear ratio of the passive gear set (30), so that there is a speed difference between the first speed of the active planetary gears (29) and the second speed of the passive planetary gears (39), and a similar forward and reverse effect is formed relative to the input member (10), so that a dynamic fulcrum effect is generated between the active planetary gears (29) and the passive planetary gears (39);

Furthermore, the output member (40) can be connected to the passive gear set (30). The output member (40) of the present invention can be an outer tooth edge (41) formed on the periphery of the second wheel frame (31) of the passive gear set (30), and a reduced power output is provided through the speed difference between the aforementioned active planetary gears (29) and the passive planetary gears (39);

In this way, after the input member (10) is input at a high rotation speed, the dynamic fulcrum formed by the speed difference between the driving planetary gears (29) and the passive planetary gears (39) is passed, so that the driving planetary gears (29) and the passive planetary gears (39) are converted from self-rotation to revolution, so that the output member (40) is output at a low rotation speed and high torque after deceleration, thereby forming a speed reduction device with a simple structure, a small footprint and a high output torque.

As for the actual operation of the speed reduction device of the present invention, it is as shown in the third, fourth, fifth and sixth figures. In operation, when the output shaft (11) of the input member (10) is input with a higher rotation speed A as the initial power, since the active sun gear (25) of the active gear set (20) and the passive sun gear (35) of the passive gear set (30) are fixedly mounted on the output shaft (11), when the output shaft (11) rotates clockwise, the active sun gear (25) (as shown in the fifth figure) and the passive sun gear (35) (as shown in the sixth figure) can be driven to rotate clockwise synchronously;

Since the active planetary gears (29) of the active gear set (20) and the passive planetary gears (39) of the adjacent passive gear set (30) are pivotally mounted on the same shaft (27) through the first bearing (28) and the second bearing (38), respectively, the active sun gear (25) of the active gear set (20) can be driven to rotate counterclockwise with the active planetary gears (29) that are engaged with it (as shown in FIG. 5). , so that the active sun gear (25) can use the gear ratio to make the active planetary gears (29) produce a first speed, and at the same time, the passive sun gear (35) of the passive gear set (30) can also drive the passive planetary gears (39) that are engaged with it to synchronously produce counterclockwise rotation [as shown in the sixth figure], so that the passive sun gear (35) can use the gear ratio to make the passive planetary gears (39) produce a second speed, by The gear ratio of the active gear set (20) is not equal to the gear ratio of the passive gear set (30), so that a speed difference is formed between the first speed of the active planetary gears (29) and the second speed of the passive planetary gears (39), and a similar forward and reverse effect is formed relative to the speed A of the input member (10). In addition, the active planetary gears (29) and the passive planetary gears (39) which are coaxially pivoted are rigidly connected. The active planetary gears (29) and the passive planetary gears (39) act as a "dynamic fulcrum", so that the active planetary gears (29) and the passive planetary gears (39) respectively revolve in time with the active sun gear (25) and the passive sun gear (35), thereby causing the output member (40) connected to the passive gear set (30) to generate a reduced power output at a lower speed, thereby achieving the purpose of deceleration.

At the same time, the difference between the gear ratio of the driving gear set (20) and the gear ratio of the passive gear set (30) can be used to generate different speed differences, so as to adjust the reduction ratio and the torque, for example;

When the speed difference between the driving gear set (20) and the driven gear set (30) is large, the dynamic pivot resistance between the two becomes larger, causing the revolution speed to increase. Therefore, the speed reduction ratio will be smaller, and the torque value will also be smaller. It can be used in the application environment of high speed and low torque reduction power output.

When the speed difference between the driving gear set (20) and the driven gear set (30) is small, the dynamic pivot resistance between the two becomes smaller, so that the revolution speed becomes slower, so that the speed reduction ratio is larger and the torque value is also larger, which can be used in the application environment of low speed and high torque reduction power output.

Through the above-mentioned design and description, the reduction device of the invention designs the gear ratio of the coaxially driven active gear set (20) and the passive gear set (30) to be different, so that a speed difference is formed between the active planetary gears (29) and the passive planetary gears (39), and the coaxially pivoted active planetary gears (29) and the passive planetary gears (39) are used to control the rotation speed of the active planetary gears (29) and the passive planetary gears (39). The rigidly connected structure generates a dynamic pivot resistance between the active planetary gears (29) and the passive planetary gears (39), and the active planetary gears (29) and the passive planetary gears (39) respectively revolve relative to the active sun gear (25) and the passive sun gear (35), thereby achieving the purpose of deceleration. The structure can be greatly simplified, the material volume can be effectively reduced, and the torque output can be increased.

From this, we can understand that this creation is a creation with excellent creativity. In addition to effectively solving the problems faced by practitioners, it also greatly improves the efficacy. In the same technical field, there are no identical or similar products created or publicly used. At the same time, it has improved efficacy. Therefore, this creation has met the requirements of "novelty" and "progressiveness" for new patents, and an application for a new patent is filed in accordance with the law.

10: Input part 11: Output shaft 12: Shaft seat section 13: Mounting section 20: Active gear set 21: First gear frame 22: Shaft groove 23: Bearing 24: First connecting post 25: Active sun gear 26: First shaft hole 27: Shaft rod 28: First shaft bearing 29: Active planetary gear 30: Passive gear set 31: Second gear frame 32: Shaft groove 34: Second connecting post 35: Passive sun gear 350: Cam 36: Second shaft hole 37: Locking piece 38: Second bearing 39: Passive planetary gear 40: Output element 41: External tooth rim

The first figure is a schematic diagram of the deceleration device of the invention, used to illustrate the state viewed from its input end.

The second figure is another schematic diagram of the deceleration device of the present invention, used to illustrate the state viewed from its output end.

Figure 3: is a 3D exploded diagram of the deceleration device of this invention, used to illustrate the state of its various components and their relative relationships.

Figure 4: is a side cross-sectional diagram of the deceleration device of this invention after assembly.

Figure 5: is a cross-sectional diagram of the deceleration device of the invention at the A-A position in Figure 4, illustrating the operation of its active gear set.

Figure 6: is a cross-sectional diagram of the deceleration device of the invention at the B-B position in Figure 4, illustrating the operation of its passive gear set.

10: Input parts

11:Output shaft

20: Driving gear set

21: First wheel frame

23: Bearings

24: First connecting column

25: Active solar gear

26: First shaft hole

27: Axis rod

28: First bearing

29: Active planetary gear

30: Passive gear set

31: Second wheel frame

34: Second connecting column

35: Passive solar gear

36: Second shaft hole

350: Camshaft

37: Lock firmware

38: Second bearing

39: Passive planetary gear

40: Output

41: External tooth edge

Claims (7)

A deceleration device includes: an input member that can provide an initial power input; an active gear set that has a first wheel frame that pivots relative to the input member, the active gear set has an active sun gear fixed to the input member, and the active gear set has a plurality of active planetary gears that mesh with the active sun gear and pivot on the first wheel frame, so that the active sun gear can drive the active planetary gears to generate a first speed; A passive gear set has a second wheel frame pivotally rotating relative to the input member, and the second wheel frame can be connected and rotated with the first wheel frame, and the passive gear set has a passive sun gear fixed to the input member, and the passive gear set has a plurality of passive planetary gears meshing with the passive sun gear and pivotally arranged on the second wheel frame, wherein the passive planetary gears are respectively opposite to the active planetary gears, and at the same time The respective driving planetary gears and the passive planetary gears are rigidly connected, so that the passive sun gear can drive the passive planetary gears to generate a second speed, and the gear ratio of the driving gear set is not equal to the gear ratio of the passive gear set, so that there is a speed difference between the first speed of the driving planetary gears and the second speed of the passive planetary gears, and a dynamic fulcrum is generated by using the speed difference; An output member connected to the passive gear set, the output member can use the dynamic fulcrum to generate a decelerated power output; When the input member is input at a high speed, the active planetary gears and the passive planetary gears are transformed from self-rotation to revolution through the dynamic fulcrum formed by the speed difference between the active planetary gears and the passive planetary gears, so that the output member is output at a low speed after deceleration. A reduction device as described in claim 1, wherein the input member can be an output shaft of a motor, and the output shaft is used to assemble the active sun gear and the passive sun gear. A reduction device as described in claim 2, wherein the first wheel carrier axle center of the active gear set has an axle groove for being pivotally mounted on the output shaft using a bearing. A deceleration device as described in claim 1, wherein the first wheel carrier of the driving gear set has a plurality of equidistant first connecting posts, and the second wheel carrier of the passive gear set has a plurality of second connecting posts relative to the first connecting posts, so that the first and second wheel carriers can be locked relative to each other using a locking fixture. A reduction device as described in any one of claims 1 to 4, wherein the first wheel carrier of the driving gear set is formed with a plurality of equidistant first axial holes, and the second wheel carrier of the passive gear set has a plurality of second axial holes relative to the first axial holes, and the first and second axial holes respectively relative to each other are provided with a shaft rod commonly spanned for pivoting the adjacent driving planetary gear and the passive planetary gear. A reduction device as described in claim 5, wherein a first bearing and a second bearing are respectively provided between the driving planetary gears and the passive planetary gears and the shaft. A deceleration device as described in claim 1, wherein the output member can be an outer tooth edge formed on the periphery of the second wheel carrier of the driven gear set.

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