TWI705207B - RV reduction transmission mechanism - Google Patents

Abstract

The invention relates to an RV reduction transmission mechanism, which includes a pin wheel ring seat, a planetary support outer disc, a planetary support inner disc, a cycloid, a planetary support input disc, a planetary gear set and a sun gear input shaft. Needle wheels are arranged on the inner circumference of the needle wheel ring seat. The outer disk of the planetary support is fixed at the rear end of the needle wheel ring seat. The planetary carrier inner disc is rotatably arranged on the inner circumference of the planetary carrier outer disc. The outer circumference of the cycloid wheel meshes with the pin wheel. The planetary support input disc is rotatably arranged at the front end of the pin wheel ring seat, and is fixed to the inner disc of the planetary support. The planetary gear set is rotatably arranged between the cycloids. The outer peripheral ring of the front section of the sun gear input shaft is provided with meshing teeth. The front section penetrates from the front end of the pin wheel ring seat so that the meshing teeth respectively mesh with the planet gears. The middle section of the sun gear input shaft interposes a third bearing and pivots through the planet carrier input disc , So that the RV transmission technology can be applied to the power transmission mechanism to achieve better power transmission deceleration effect.

Description

RV reduction transmission mechanism

The present invention relates to an RV reduction transmission mechanism, in particular to an RV reduction transmission technology that can achieve better power transmission reduction efficiency.

According to, the RV transmission mechanism is a relatively new design of transmission mechanism. The RV transmission mechanism is mainly based on the basic structure of the conventional pin-vibration planetary transmission mechanism and developed a new design power transmission mechanism. The RV transmission mechanism not only overcomes the shortcomings of the conventional needle pendulum transmission mechanism, but also because compared with the conventional needle pendulum transmission mechanism, it does have small size, light weight, large transmission ratio range, long life, stable accuracy, and efficiency. Because of its advantages such as high height and smooth transmission, it has gradually been favored and favored by related technical fields at home and abroad. Because of this, the RV transmission mechanism has indeed been used in technical fields such as industrial robots, machine tools, medical testing equipment, and satellite receiving systems.

Although the conventional RV deceleration mechanism has the advantages of small size, light weight, large transmission ratio range, long life, stable accuracy, high efficiency, and stable transmission compared with the conventional pin-vibration transmission mechanism; however, RV The transmission mechanism is used in the motor transmission mechanism of a bicycle; or other motor transmission mechanisms still have relatively large volume, heavy weight, small transmission ratio range and poor transmission stability. In view of this, how to develop a transmission control that improves the lack of RV reduction transmission technology to improve the transmission smoothness of the power transmission mechanism Technology has become one of the technical issues that the industry in related technical fields urgently wants to improve and challenge.

Therefore, in view of the deficiencies caused by the above-mentioned conventional RV transmission mechanism, the present inventors finally developed a set of the present invention which is different from the above-mentioned conventional technology and has improved efficacy after continuous research and development efforts.

The main purpose of the present invention is to provide a RV reduction transmission mechanism, which mainly applies the RV transmission technology to the power transmission mechanism of the machine tool to realize the power transmission reduction effect, so it has the advantages of small size, light weight, large transmission ratio range, transmission It has many characteristics such as high precision, high transmission efficiency and better transmission stability. The technical means to achieve the main purpose of the invention include the pin wheel ring seat, the planetary carrier outer disc, the planetary carrier inner disc, the cycloid, the planet carrier input disc, the planetary gear set and the sun gear input shaft. Needle wheels are arranged on the inner circumference of the needle wheel ring seat. The outer disk of the planetary support is fixed at the rear end of the needle wheel ring seat. The planetary carrier inner disc is rotatably arranged on the inner circumference of the planetary carrier outer disc. The outer circumference of the cycloid wheel meshes with the pin wheel. The planetary support input disc is rotatably arranged at the front end of the pin wheel ring seat, and is fixed to the inner disc of the planetary support. The planetary gear set is rotatably arranged between the cycloids. The outer peripheral ring of the front section of the sun gear input shaft is provided with meshing teeth. The front section penetrates from the front end of the pin wheel ring seat so that the meshing teeth respectively mesh with the planet gears. The middle section of the sun gear input shaft interposes a third bearing and pivots through the planet carrier input disc .

10‧‧‧Needle wheel ring seat

11‧‧‧Needle wheel

20‧‧‧Planetary carrier outer plate

21‧‧‧Upper outer ring of planet carrier

22‧‧‧Lower outer ring of planet carrier

30‧‧‧Planetary carrier inner plate

31‧‧‧Protrusion

32,41,51‧‧‧round hole

33,42,52‧‧‧Guide hole

40‧‧‧Cycloidal wheel

50‧‧‧Planetary support input plate

60‧‧‧Planetary gear set

61‧‧‧Planetary gear

62‧‧‧Eccentric shaft

620‧‧‧Eccentric part

621‧‧‧Shaft

70‧‧‧Sun gear input shaft

71‧‧‧Tooth

72‧‧‧Interlocking Department

80‧‧‧First bearing

81‧‧‧Second Bearing

82‧‧‧Third bearing

83‧‧‧Fourth bearing

90‧‧‧Bolt

91‧‧‧Oil Seal

92‧‧‧Needle limit washer

93‧‧‧O-ring

94‧‧‧Wave gasket

95‧‧‧Bearing limit gasket

96‧‧‧C elastic buckle

Figure 1 is an exploded schematic diagram of the specific architecture of the present invention.

Figure 2 is a schematic diagram of the combined appearance of the specific architecture of the present invention.

Figure 3 is a schematic cross-sectional view of the combined part of the specific architecture of the present invention.

Figure 4 (a) is a schematic front view of the specific structure of the present invention; Figure 4 (b) is a cross-sectional view in the direction of cut of Figure 4 (a) intention.

In order to allow your reviewer to further understand the overall technical features of the present invention and the technical means to achieve the purpose of the invention, a detailed description is given with specific examples and accompanying drawings:

Please refer to Figures 1~4. In order to achieve the main purpose of the invention, the embodiment includes a pin wheel ring seat 10, a planet carrier outer disk 20, a planet carrier inner disk 30, two cycloids 40, and a planet. The technical features of the carrier input disk 50, the multiple planetary gear set 60 and a sun gear input shaft 70. A plurality of pin wheels 11 are arranged on the inner circumference of the pin wheel ring seat 10. The planetary carrier outer disk 20 is coaxially fixed to the rear end of the pin wheel ring seat 10. The planetary carrier inner disk 30 is rotatably disposed on the inner circumference of the planetary carrier outer disk 20. The outer circumference of the cycloidal wheel 40 meshes with the plurality of pin wheels 11 so that the two cycloidal wheels 40 are rotatably arranged on the inner circumference of the pin wheel ring seat 10. The planetary carrier input disc 50 is rotatably arranged at the front end of the pin wheel ring seat 10 and is assembled with the planetary carrier inner disc 30. A plurality of planetary gear sets 60 are rotatably distributed between the two cycloids 40. Each of the plurality of planetary gear sets 60 includes a planetary gear 61 and two eccentric shafts 62. The two eccentric shafts 62 are eccentrically fixed on the planetary gear 61. Front end and back end. Each of the two eccentric shafts 62 includes an eccentric portion 620 and a shaft portion 621 disposed on the two eccentric portions 620. A first bearing 80 is sleeved on the outer circumference of the two eccentric portions 620 and pivots through the two cycloid 40. The shaft portions 621 are respectively It is pivoted on the planet carrier inner disk 30 and the planet carrier input disk 50 via two second bearings 81. The front section of the sun gear input shaft 70 is provided with a meshing tooth 71 on the outer peripheral ring, and the rear section is provided with a linkage part 72 for connecting with an input power source. The front section of the sun gear input shaft 70 penetrates from the front end of the pin wheel ring seat 10 to make the meshing tooth 71 meshes with a plurality of planetary gears 61 respectively. A third bearing 82 is interposed in the middle section of the sun gear input shaft 70 and pivots at the center of the planet carrier input disc 50.

Please refer to the embodiment shown in Figures 1 and 2, the planetary carrier outer disk 20 is composed of a planetary carrier upper outer ring 21 and a planetary carrier lower outer ring 22 coaxially juxtaposed and fixed with multiple screws The bolt 90 penetrates and locks the upper outer ring 21 of the planetary carrier and the lower outer ring 22 of the planetary carrier respectively and is screw-locked on one side of the ring surface of the pin wheel ring seat 10.

Please refer to FIGS. 1 and 2, an oil seal 91 is interposed between the outer periphery of the planetary carrier inner disk 30 and the inner periphery of the planetary carrier outer disk 20. Another oil seal 91 is interposed between the outer circumference of the planetary carrier input disc 50 and the inner circumference of the front end of the pin wheel ring seat 10.

Please refer to the embodiment shown in FIG. 1, a fourth bearing 83 is interposed between the front end of the sun gear input shaft 70 and the planet carrier inner disk 30 to form a pivot connection.

Please refer to Fig. 1. A front end surface of the inner disk 30 of the planetary carrier is protruded with a plurality of protruding columns 31. The plurality of protruding columns 31 pass through the two cycloid 40, and are locked on the planet carrier input disk 50 with a plurality of bolts 90, and are connected to the corresponding The plurality of bosses 31 are screw-locked to fix the planetary carrier input disc 50 and the planetary carrier inner disc 30.

Please refer to FIG. 1, the number of the plural planetary gear sets 60 is three sets. The planetary carrier inner disk 30, the two cycloid wheel 40 and the planetary carrier input disk 50 are all arranged in a ring, and a plurality of circular holes 32, 41, 51, and two cycloidal wheels 40 are arranged opposite to each other for the rotation of the plurality of planetary gear sets 60. , The center positions of the planetary carrier outer disk 20 and the planetary carrier input disk 50 are both provided with a circular guide hole 33, 42, 52 which is directly opposite to each other for the assembly of the sun gear input shaft 70.

Furthermore, in order to clarify the purpose and function of the main constituent features of this case, the main constituent features are described as follows:

a. The needle wheel ring seat 10 is provided with a plurality of needle wheel grooves equally spaced along the axial direction on the inner circumference of the axial direction, and a plurality of axial flange holes are provided on the outer circumference and one side of the housing respectively. A pin wheel 11 corresponding to the number of pin wheel grooves is installed in the wheel groove, and its axial position is restricted by a needle roller limit washer 92, and a leak-proof element installation position is provided on one side of the needle wheel ring seat 10 for installation The O-ring 93 is installed, and the other side of the needle wheel ring seat 10 is provided with a leak-proof element installation position for installing the oil seal 91.

b. The planetary carrier system consists of the planetary carrier outer disk 20, the planetary carrier inner disk 30, roller bearings and planetary supports The carrier input disk 50 and other components are composed of a planetary carrier with a rotating support function. The planetary carrier inner disk 30 and the planetary carrier input disk 50 are provided with an annular groove for assembling tapered roller bearings, so that the planetary carrier has The cross roller bearing has the function of supporting rotation, and is provided with corresponding holes for locking with the needle wheel ring seat 10. The planetary carrier inner disk 30 is provided with a plurality of output flanges and round holes for assembly with the bearing. The round holes are used for assembling tapered roller bearings, and a through hole is provided at the bottom of the assembly hole for oil injection maintenance and leak-proof components. The installation position corresponds to the use requirements of the cross roller bearing, which is used to install the oil seal 91, and the bearing position is used to install the bearing.

c. Flange holes are provided on the lower outer ring 22 of the planetary support for locking with the upper outer ring 21 of the planetary support, so as to achieve the function of the outer ring of the cross roller bearing and for locking with the pin wheel ring seat 10.

d. Flange holes are provided on the outer ring 21 of the planetary support to be locked with the lower outer ring 22 of the planetary support to achieve the function of the outer ring of the cross roller bearing and to be locked with the needle wheel ring seat 10 to prevent The installation position of the leakage element corresponds to the use requirement of the cross roller bearing to install the O-ring 93.

e. The planetary carrier input disc 50 is provided with a flange hole and a bearing assembly round hole for locking with the planetary carrier inner disc 30. The bearing assembly round hole is used to assemble a tapered roller bearing, and a C slot is provided for Assemble the C buckle for the axial limit of the tapered roller bearing, the installation position of the anti-leakage element, to install the oil seal 91 for the sun gear input shaft 70, and the bearing installation position on the same shaft to install the bearing, The sun gear input shaft 70 is rotatably supported, and a corrugated washer 94 is used for auxiliary use to adjust the bearing preload.

f. A plurality of eccentric shafts 62 are equipped with an eccentric portion 620 and a planetary gear 61. The axial end portion is rotatably supported on the planetary carrier through a tapered roller bearing. The eccentric portion 620 rotates the cycloid 40 through a needle bearing The support is eccentrically driven, and a bearing limiting washer 95 is arranged on the axial end and between the tapered roller bearing to axially limit the needle roller bearing.

g. The sun gear input shaft 70 and the pin wheel ring seat 10 are arranged on the same axis, and the meshing teeth 71 mesh with the planet gear 61 of the eccentric shaft 62, and are rotatably supported by the planet carrier through the bearing.

h. The cycloidal wheel 40 is rotatably supported on the eccentric part 620 of the eccentric shaft 62 through a needle bearing, and performs an eccentric rotation movement.

Therefore, through the description of the above specific embodiments, the present invention can indeed apply the RV transmission technology to the power transmission mechanism of the machine tool to achieve the effect of power transmission deceleration, and thus has the advantages of small size, light weight, large transmission ratio range, The characteristics of high transmission accuracy, high transmission efficiency and better transmission stability.

The above are only feasible embodiments of the present invention, and are not intended to limit the patent scope of the present invention. Any equivalent implementation of other changes based on the content, characteristics and spirit of the following claims shall be It is included in the scope of the patent of the present invention. The structural features of the invention specifically defined in the claim are not found in similar articles, and are practical and progressive, and have already met the requirements of an invention patent. The application is filed in accordance with the law. I would like to request the Bureau of Jun to approve the patent in order to protect this The legitimate rights and interests of the applicant.

10‧‧‧Needle wheel ring seat

11‧‧‧Needle wheel

20‧‧‧Planetary carrier outer plate

21‧‧‧Upper outer ring of planet carrier

22‧‧‧Lower outer ring of planet carrier

30‧‧‧Planetary carrier inner plate

31‧‧‧Protrusion

32,41,51‧‧‧round hole

33,42,52‧‧‧Guide hole

40‧‧‧Cycloidal wheel

50‧‧‧Planetary support input plate

60‧‧‧Planetary gear set

61‧‧‧Planetary gear

62‧‧‧Eccentric shaft

620‧‧‧Eccentric part

621‧‧‧Shaft

70‧‧‧Sun gear input shaft

71‧‧‧Tooth

72‧‧‧Interlocking Department

80‧‧‧First bearing

81‧‧‧Second Bearing

82‧‧‧Third bearing

83‧‧‧Fourth bearing

90‧‧‧Bolt

91‧‧‧Oil Seal

92‧‧‧Needle limit washer

93‧‧‧O-ring

94‧‧‧Wave gasket

95‧‧‧Bearing limit gasket

96‧‧‧C elastic buckle

Claims (6)

An RV reduction transmission mechanism, which includes: a pin wheel ring seat, the inner circumference of which is arranged with plural pin wheels; a planetary carrier outer disk, which is coaxially fixed to the rear end of the pin wheel ring seat; a planetary carrier inner disk, which can be It is rotatably arranged on the inner circumference of the outer disk of the planetary carrier; two cycloidal wheels, the outer circumference of which meshes with the plural pin wheels, so that the two cycloidal wheels can be rotatably arranged on the inner circumference of the pin wheel ring seat; a planetary carrier An input disc, which is rotatably arranged at the front end of the pin wheel ring seat, and is fixed to the inner disc of the planetary carrier; a plurality of planetary gear sets, which are rotatably arranged between the two cycloids, and the plurality of planetary gears The sets each include a planetary gear and two eccentric shafts, the two eccentric shafts are respectively eccentrically fixed at the front and rear ends of the planetary gears, the two eccentric shafts include two eccentric parts and two shaft parts arranged at the two eccentric parts, A first bearing is sleeved on the outer periphery of the two eccentric parts to pivot on the two cycloidal gears, and the shaft part is pivoted to the planet carrier inner disc and the planet carrier input disc via two second bearings; and a sun gear For the input shaft, the outer peripheral ring of the front section is provided with a meshing tooth, and the rear section is provided with a linkage part for connecting with an input power source. The front section of the sun gear input shaft penetrates through the front end of the pin wheel ring seat so that the meshing teeth are respectively connected with The plurality of planetary gears are meshed, a third bearing is interposed in the middle section of the sun gear input shaft to pivot on the planet carrier input disk; wherein a wave washer is interposed between the middle section of the sun gear input shaft and the third bearing, Used to adjust the third bearing preload; the planetary carrier outer disc system is composed of a planetary carrier upper outer ring and a planetary carrier lower outer ring coaxially juxtaposed and fixed, and a plurality of bolts are respectively penetrated and locked through the planetary carrier upper outer ring and The lower outer ring of the planetary carrier is screw-locked to the ring surface of the pin wheel ring seat; and the side of the pin wheel ring seat facing the outer ring of the planetary carrier is provided with an O-ring for mounting The leakage element installation position; the outer periphery of the planetary support input disc and the inner periphery of the front end of the pin wheel ring seat are interposed with another oil seal. The RV reduction transmission mechanism according to claim 1, wherein an oil seal is interposed between the outer circumference of the inner disk of the planetary carrier and the inner circumference of the outer disk of the planetary carrier. The RV reduction transmission mechanism of claim 1, wherein a fourth bearing is interposed between the front end of the sun gear input shaft and the inner disk of the planet carrier to form a pivot connection. The RV reduction transmission mechanism of claim 1, wherein a front end surface of the inner disk of the planetary carrier is protruded with a plurality of bosses, and the plurality of bosses pass through the two cycloidal wheels, and are locked to the planet carrier input disk by a plurality of bolts, And it is screw-locked with the corresponding plural convex columns to fix the planetary carrier input disc and the planetary carrier inner disc. The RV reduction transmission mechanism according to claim 1, wherein the number of the plural planetary gear sets is three. The RV reduction transmission mechanism according to claim 1, wherein the planetary carrier input disk, the two cycloid and the planetary carrier outer disk are all circumferentially arranged with a plurality of circular holes for the rotation of the plurality of planetary gear sets , And a circular guide hole for the sun gear input shaft assembly is provided in the center of each circular hole.

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