TW202022257A - Speed reducing transmission bearing characterized by using a speed reducing mechanism of a composite bearing arrangement to allow the speed reducing transmission bearing to have a more concise structure - Google Patents

Abstract

Disclosed is a speed reducing transmission bearing, especially a design of a composite bearing with a speed reducing transmission action, which includes a flexible inner bearing and a rigid outer bearing. An outer ring surface of the flexible inner bearing forms a circle of external teeth. An axial extension portion of the outer ring is provided with a plurality of elastic grooves and a radial flange. An inner ring of the flexible inner bearing allows a power inputted harmonic cam to be mounted. An inner ring surface of the rigid outer bearing forms a circle of internal teeth. The internal teeth are engaged with the external teeth of the flexible inner bearing to perform actions, thereby allowing the rigid outer bearing to select the outer ring so as to be used for the contribution and connection while being in a speed reduction status. When the flexible inner bearing is under rotations of the power inputted harmonic cam, a speed reducing transmission action is generated between the flexible inner bearing and the rigid outer bearing.

Description

Reduction drive bearing

The invention relates to a reduction transmission bearing, in particular to a reduction mechanism with a composite bearing configuration. The flexible inner bearing and the rigid outer bearing of the reduction transmission bearing directly form the transmission state of tooth difference meshing, so that the reduction transmission bearing has a more concise structure.

Traditional harmonic reducers (harmonic reducers) are mostly composed of a rigid outer gear ring, a flexible inner gear ring and a harmonic cam. The inner ring surface of the rigid outer gear ring is provided with internal teeth, and the flexible inner gear ring The outer ring surface is provided with outer teeth, the flexible inner gear ring is arranged in the rigid outer gear ring, and the harmonic cam is arranged in the flexible inner gear ring, so that the harmonic cam abuts against the flexible inner gear ring, resulting in the flexible inner gear ring Part of the external teeth mesh with the internal teeth of the rigid external gear ring. When it is installed and used, the motor output power shaft is connected to the harmonic cam. Through the rotation of the harmonic cam, the flexible inner gear ring is driven to rotate in the rigid outer gear ring, so that the flexible inner gear ring is converted into a low-speed power output. In this way, the detuned reducer can be applied to areas with high load and low speed requirements, such as the joints of each shaft of a robotic arm.

However, the power transmission mode in which these motors and reduced resonance reducers are connected in series with their shafts will inevitably cause the overall axial length to be too long. As a result, the installation space of the motors and reduced resonance reducers needs to be large in size, which is disadvantageous to the mechanism. planning. For this reason, there is the case of a rotary actuator proposed by Taiwan Invention Patent Publication No. 201626696, which hopes to use a hollow-type harmonic gear device to house the motor in order to achieve the purpose of reducing the axial size of the rotary actuator. However, the tooth width of the tooth transmission of the harmonic gear device disclosed in the above case is limited by the structural factors of the flexible damping drive tooth structure, which cannot have better power transmission, resulting in the torque output value of the rotary actuator. Better performance, less load capacity.

The inventor adheres to the research and development spirit of striving for perfection, and expects that the harmonic reduction bearing can also have excellent torque output performance under the condition of reducing the axial size, so that the overall application level of the harmonic reduction bearing will be more extensive. Invent the technology to be actively disclosed.

The purpose of the present invention is to provide a reduction transmission bearing, which is composed of a reduction transmission bearing with simple composite bearing meshing to achieve the goals of more complete meshing of internal and external teeth to transmit power, direct power transmission, and a more streamlined overall structure.

In order to achieve the above-mentioned object, the reduction transmission bearing of the present invention includes: a flexible inner bearing and a rigid outer bearing that are axially sleeved with each other rotatably, each of the flexible inner bearing and the rigid outer bearing has an outer ring , An inner ring, and a plurality of rollers arranged between each outer ring and the inner ring; the outer ring of the outer ring of the flexible inner bearing has a ring of outer teeth, and one end of the outer ring of the flexible inner bearing It has an axially extending ring, and a radial flange extending radially from the end of the axially extending ring. The axially extending ring is provided with a plurality of cut grooves, and the flexible inner bearing is formed between the grooves With the elastic deformation portion of the radial flange; the inner ring of the inner ring of the rigid outer bearing has a ring of inner teeth which mesh with the outer teeth of the flexible inner bearing; and the inner ring of the flexible inner bearing A harmonic cam is embedded in the middle, and the rotation of the harmonic cam causes the flexible inner bearing and the rigid outer bearing to produce a deceleration transmission effect between each other.

In the above reduction transmission bearing, the number of teeth of the outer teeth of the flexible inner bearing is smaller than the number of teeth of the inner teeth of the rigid outer bearing.

In the above reduction transmission bearing, the slot is a strip-shaped slot extending along the circumferential direction of the axially extending ring, and two ends of the strip-shaped slot are respectively formed with a hole.

In the above reduction transmission bearing, the outer ring of the rigid outer bearing and the radial flange are respectively provided with through holes capable of penetrating fixing elements.

In the above reduction transmission bearing, the rollers of the flexible inner bearing are balls.

In the above reduction transmission bearing, the rollers of the rigid outer bearing are rollers, and the shaft centers of the outer rollers are arranged in a crosswise arrangement at a vertical angle.

The reduction transmission bearing of the present invention is composed of the reduction transmission bearing with simple composite bearing meshing, achieving the effects of more complete meshing of internal and external teeth to transmit power, direct power transmission and simpler overall structure.

In order to fully understand the purpose, features and effects of the present invention, the structural features and other functions and purposes of the present invention are described in detail in accordance with the embodiments of the drawings as follows:

Referring to Figure 1, Figure 2 and Figure 3, the reduction drive bearing of the present invention is a reduction drive bearing that has the function of reducing transmission and supporting the power input shaft or the power output shaft. Its preferred specific embodiments mainly include : A flexible inner bearing 10 and a rigid outer bearing 20. The flexible inner bearing 10 and the rigid outer bearing 20 each have an outer ring 11, 21, an inner ring 12, 22, and are arranged on each of the outer ring 11, 21 and the inner ring 12, 22 between the plurality of rollers 13, 23, the diameter of the outer ring 11 of the flexible inner bearing 10 is smaller than the diameter of the inner ring 22 of the rigid outer bearing 20, so that the flexible inner bearing 10 and the The rigid outer bearings 20 are axially sleeved together rotatably.

2 to 4, the above-mentioned flexible inner bearing 10 is made of flexible material with its outer ring 11 and inner ring 12. The outer ring surface of the outer ring 11 of the flexible inner bearing 10 is specially implemented with a ring of outer teeth 14. One end of the flexible inner bearing 10 is implemented with an axially extending ring 15 and a radial flange 16 extending radially from the end of the axially extending ring 15; the axially extending ring 15 is provided with A plurality of slits 17, one of the preferred embodiments of the slit 17, is a strip-shaped slit 171 extending along the circumferential direction of the axially extending ring 15, and a hole is formed at both ends of the strip-shaped slit 171 respectively 172, whereby an elastic deformation portion 18 connecting the outer ring 11 and the radial flange 16 is formed between the cut grooves 17.

2 to 4, the rigid outer bearing 20 is made of rigid material with its outer ring 21 and inner ring 22. The inner ring surface of the inner ring 22 has a larger diameter than the outer ring 11 of the flexible inner bearing 10 The diameter of the surface is such that the rigid outer bearing 20 axially fits the outer ring surface of the flexible inner bearing 10, and the inner ring surface of the rigid outer bearing 20 is implemented with a ring of inner teeth 24 corresponding to the outer teeth 14, thereby passing The drive of a harmonic cam (not shown) arranged in the flexible inner bearing 10 makes the outer teeth 14 of the flexible inner bearing 10 and the inner teeth 24 of the rigid outer bearing 20 mesh with each other (as shown in Figure 5). Show), and the number of teeth of the outer teeth 14 of the flexible inner bearing 10 is less than the number of teeth of the inner teeth 24 of the rigid outer bearing 20, so as to achieve the effect of speed reduction and transmission.

2 to 4 again, the outer ring 21 of the rigid outer bearing 20 and the radial flange 16 of the flexible inner bearing 10 are respectively provided with perforations 211, 161 capable of piercing fixing elements (screws, etc.) Fixed and combined with each other. The rollers 13 of the above-mentioned flexible inner bearing 10 are spherical balls, and can also be implemented as parallel rollers or needle rollers. The roller 23 of the rigid outer bearing 20 is preferably implemented as a roller, and each of the rollers 23 (roller) axis is arranged in a vertical angle crosswise arrangement, so that the outer ring 21 and the inner ring of the rigid outer bearing 20 22 will not disengage axially.

In the present invention, the flexible inner bearing 10 is used as a power input element, and the rigid outer bearing 20 is used as a decelerated power output element. When it is used, refer to Figures 4 and 5 to make the power input shaft drive the harmonic cam (not shown) to rotate. Through the structure of the slot 17 and the elastic deformation portion 18 of the flexible inner bearing 10, the flexible inner The bearing 10 is more easily stretched by the harmonic cam, so that its outer teeth 14 are completely meshed with the inner teeth 24 of the rigid outer bearing 20. Moreover, the number of teeth of the outer teeth 14 of the flexible inner bearing 10 of the present invention is less than the number of teeth of the inner teeth 24 of the rigid outer bearing 20, so the rigid outer bearing 20 can decelerate and output power, achieving a high reduction ratio and direct transmission effect. Furthermore, the overall structure of the present invention is more streamlined, which is more conducive to the convenience of manufacturing and assembly.

In summary, the rotary actuator of the present invention has indeed practicability and creativity, and the application of its technical means is undoubtedly novel, and the efficacy and design goals are indeed consistent, which has been said to be reasonably advanced. To this end, I filed an application for a patent for invention in accordance with the law, but I implore the Jun Bureau for a detailed review and grant the patent as a prayer.

10: Flexible inner bearing 11: Outer ring 12: Inner ring 13: Roller 14: External teeth 15: Axial extension ring 16: Radial flange 161: Perforation 17: Slot 171: Strip slot 172: Hole 18 : Elastic deformation part 20: Rigid outer bearing 21: Outer ring 211: Perforated 22: Inner ring 23: Roller 24: Internal tooth

Figure 1 is a perspective view of the combined structure of the reduction transmission bearing of the present invention. Figure 2 is a three-dimensional schematic diagram of the exploded structure of the reduction transmission bearing of the present invention. Fig. 3 is a perspective view of another exploded structure of the reduction transmission bearing of the present invention. Figure 4 is a schematic cross-sectional view of the combined structure of the reduction transmission bearing of the present invention. Figure 5 is a schematic front view of the combined structure of the reduction transmission bearing of the present invention.

10: Flexible inner bearing

11: Outer ring

12: inner ring

13: Roller

14: External teeth

15: Axial extension ring

16: Radial flange

161: Piercing

17: Grooving

171: Strip grooving

172: Hole

18: Elastic deformation part

20: Rigid outer bearing

21: Outer ring

211: Piercing

22: inner ring

23: Roller

24: Internal teeth

Claims (6)

A reduction transmission bearing, comprising: a flexible inner bearing and a rigid outer bearing that are axially sleeved together rotatably, the flexible inner bearing and the rigid outer bearing each have an outer ring, an inner ring, and A plurality of rollers arranged between the outer ring and the inner ring; the outer ring of the outer ring of the flexible inner bearing has a ring of outer teeth, and one end of the outer ring of the flexible inner bearing has an axially extending ring , And a radial flange extending radially from the end of the axially extending ring, the axially extending ring is provided with a plurality of slots, and the slots are formed to connect the flexible inner bearing and the radial flange The elastic deformation part of the inner ring of the rigid outer bearing; the inner ring of the inner ring of the rigid outer bearing has a ring of inner teeth that mesh with the outer teeth of the flexible inner bearing; and the inner ring of the flexible inner bearing is embedded with a harmonic wave Cam, the rotation of the harmonic cam causes the flexible inner bearing and the rigid outer bearing to have a deceleration transmission effect between each other. The reduction transmission bearing according to claim 1, wherein the number of teeth of the outer teeth of the flexible inner bearing is smaller than the number of teeth of the inner teeth of the rigid outer bearing. The reduction transmission bearing according to claim 1, wherein the slot is a strip-shaped slot extending along the circumferential direction of the axially extending ring, and two ends of the strip-shaped slot are respectively formed with a hole. The reduction transmission bearing according to claim 1, wherein the outer ring of the rigid outer bearing and the radial flange are respectively provided with through holes capable of penetrating fixing elements. The reduction transmission bearing according to claim 1, wherein the rollers of the flexible inner bearing are balls. The reduction transmission bearing according to claim 1, wherein the rollers of the rigid outer bearing are rollers, and the shaft centers of the outer rollers are arranged crosswise at a vertical angle.

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