CN217603281U - Two-stage planetary reduction unit and three-stage planetary reduction driver - Google Patents

Abstract

The utility model discloses a secondary planet speed reduction unit, which comprises a secondary planet carrier assembly and a secondary planet wheel; the secondary planet carrier assembly comprises a secondary rotary supporting plate, a secondary planet wheel disc and a secondary planet shaft, the other end of the secondary planet shaft is fixedly connected with the secondary planet wheel disc, a secondary planet wheel containing cylinder is integrally arranged on the secondary planet wheel disc, a secondary planet wheel mounting groove is formed in the secondary planet wheel containing cylinder, and the secondary planet shaft is located in the secondary planet wheel containing cylinder; and a third-stage sun wheel is arranged at the center of the second-stage planetary wheel disc far away from the driving motor. The utility model discloses realize the independence with second grade reduction unit, then the tertiary planet speed reduction driver of whole assembly, improve assembly efficiency, realize simultaneously that second grade planet speed reduction unit can independently change and debug; the abnormal sound caused by the accumulation of assembly errors in the prior art is avoided, and a foundation is provided for stably transmitting power to the next stage.

Description

Two-stage planetary reduction unit and three-stage planetary reduction driver

Technical Field

The utility model belongs to transmission especially relates to a second grade planet speed reduction unit and tertiary planet speed reduction driver who is applicable to intelligent house to automatic flip of driving band lid class intelligent house product.

Background

Along with the development of economy and the improvement of the living standard of the people, the requirements of the people on bathroom appliances and even household appliances are higher and higher, and intelligent and automatic products are more and more favored in the current market. Therefore, the intelligent automation of intelligent toilet bowl, intelligent dish washer, bowl washing groove and washing machine is also higher and higher nowadays, wherein automatic flip function is exactly one of the embodiment of intelligent toilet bowl, intelligent dish washer, intelligent bowl washing groove, intelligent washing machine.

There are many electrically driven flip buffers with a driving cover plate, also called "electrically driven drivers", on the market today, and the existing electrically driven flip buffers mainly include a flip gear box, and the automatic flip of the flip is generally driven by the movement of the gear box combination with a motor controlled by a PCB board, such as driving the flip of the seat cover and the seat ring of an intelligent toilet. However, most of automatic flip gear boxes in the market have large friction between a motor, a reduction gear box, a rotating shaft of the reduction gear box and the like, high transmission ratio, high noise and easy damage of gears, so that the whole service life of the gear box is short (less than 1 ten thousand times of opening and closing), the product failure rate is high, and meanwhile, the existing electrically-driven flip buffer has large volume and large occupied space for installation.

Therefore, the applicant develops an intelligent household electric drive flip buffer which is small in size, large in output torque, compact in structure, small in friction, low in noise, stable in operation, long in service life and has a quick opening and slow descending function, and the concrete reference is CN108980288A; however, the electric-drive flip-cover buffer has low assembly efficiency in actual assembly, and still has an optimized space in the whole structure, so that the friction resistance is further reduced, the relative stability of a transmission part is ensured, the noise is reduced, and the service life is prolonged.

Specifically, the prior art (CN 108980288 a) employs a three-stage planetary reduction mechanism for an electrically driven flip-open damper; during assembly, each transmission component (each stage of planet wheel and planet carrier) needs to be assembled one by the three-stage planet speed reducing mechanism according to a certain sequence, so that the efficiency is low; furthermore, the speed reducing units of each stage are not limited or restricted along the axial direction, so that the relative position of a transmission component is not easy to determine in the assembling process, and the jamming or abnormal sound is easy to occur; in addition, in the prior art, an independent gasket is adopted to reduce the friction between adjacent parts, but the independent gasket structure has no fixed constraint, and the independent integral assembly of each stage of planetary reduction unit cannot be realized, so that the independent integral assembly of each stage of planetary reduction unit can be used as the intermediate-stage reduction of the first-stage planetary reduction unit and the third-stage planetary reduction unit, if the installation error of the reduction unit directly influences the error and the running stability of the third-stage reduction unit, the problems of unstable running and high noise of the reduction mechanism are further caused; therefore, the utility model provides a second grade planet speed reduction unit that can independently change and debug to and install the tertiary planet speed reduction driver of this second grade planet speed reduction unit.

SUMMERY OF THE UTILITY MODEL

Problem to prior art exists, the utility model provides a compact structure, improvement assembly efficiency and operating stability, the second grade planet speed reduction unit that can independently change and debug to and install the tertiary planet speed reduction driver of this second grade planet speed reduction unit.

The utility model discloses a secondary planet speed reduction unit, which comprises a secondary planet carrier component and a secondary planet wheel arranged in the secondary planet carrier component; the second grade planet carrier subassembly includes second grade gyration supporting disk, second grade planet rim plate and sets up the second grade planet axle on second grade gyration supporting disk, the other end fixed connection second grade planet rim plate of second grade planet axle, its characterized in that: a secondary planet wheel containing barrel is integrally arranged on the secondary planet wheel disc, a secondary planet wheel mounting groove is formed in the secondary planet wheel containing barrel, a secondary planet shaft is located in the secondary planet wheel containing barrel, and a secondary planet wheel is mounted on the secondary planet shaft at the position of the secondary planet wheel mounting groove; and a third-stage sun wheel is arranged at the center of the second-stage planetary wheel disc far away from the driving motor.

Preferably, a groove is formed in the end face of the secondary planet wheel containing cylinder on the side of the secondary rotary supporting disc, and the secondary rotary supporting disc is located in the groove.

Preferably, the depth of the groove is equal to the thickness of the secondary rotation support disc.

Preferably, three dynamic balance debugging holes are formed in the end face of the secondary planet wheel containing barrel on the side of the secondary rotary supporting plate along the circumferential direction, and a reference circle where the dynamic balance debugging holes are formed is concentric with the secondary planet wheel containing barrel.

Preferably, the reference circle diameter of the dynamic balance debugging hole is larger than or equal to the outer diameter of the groove.

Preferably, the dynamic balance debugging hole is a blind hole.

The utility model also discloses a three-level planetary reduction driver, which comprises a driving motor, a planetary reduction mechanism arranged in the gear ring shell, a power output shaft and a motor output flange, wherein a first-level sun gear is arranged on the power shaft of the driving motor; the primary sun gear is connected with the planetary speed reducing mechanism; the planetary reduction mechanism comprises a primary planetary reduction unit, a secondary planetary reduction unit, a tertiary planetary reduction unit and an angle detection device for detecting the rotation angle of the power output shaft; the method is characterized in that: the secondary planetary reduction unit adopts the secondary planetary reduction unit.

The utility model has the advantages and technological effect: because the utility model adopts the above technical scheme, the utility model discloses can realize independent equipment with second grade reduction unit, then the whole assembly driver, improve assembly efficiency, and second grade planet reduction unit can independently change and debug, improves the qualification rate of product greatly; the positions of all parts are kept relatively accurate, abnormal sound caused by accumulation of assembly errors in the prior art is avoided, and the effect of reducing noise is achieved; the three-stage planetary reduction driver assembled by the method reduces the internal resistance generated by the axial movement of the reduction unit and improves the stability of operation.

Drawings

Fig. 1 and 2 are schematic perspective views of the present invention;

fig. 3 and 4 are schematic perspective structures of secondary planet wheel containing cylinders;

FIG. 5 is a schematic structural view of a two-stage planetary rotation support disc;

FIG. 6 is a schematic illustration of a three-stage planetary reduction drive configuration;

FIG. 7 is a schematic view of the ring gear housing and protective cover shown removed;

FIG. 8 is a schematic perspective view of FIG. 7;

FIG. 9 is a schematic view of a motor output flange mounting structure;

FIGS. 10 and 11 are schematic structural views of a one-stage planetary reduction unit;

FIG. 12 is a schematic view of the overload protection gland with the overload protection removed;

FIG. 13 is a schematic perspective view of FIG. 12;

FIGS. 14 and 15 are schematic diagrams of a primary planet disk configuration;

FIG. 16 is a perspective view of a three-stage planetary reduction unit;

FIGS. 17 and 18 are schematic views of the angle sensing toothed disc structure removed;

FIG. 19 is a schematic structural view of a three-stage planetary rotation support plate;

FIG. 20 is a schematic view of an exploded view of the lid of the flangebox;

FIG. 21 is a schematic view showing a structure of an installation position of an angle detecting element;

fig. 22 is a structural diagram of the mounting shaft arrangement position of the potentiometer.

In the figure, 1, a driving motor; 11. a first stage sun gear; 2. a planetary reduction mechanism; 21. a primary planetary reduction unit; 211. a primary planet carrier assembly member; 212. a primary rotation support disc; 213. a primary planet wheel disc; 2130. a circular groove; 2131. a limiting groove; 2132. positioning blocks; 214. a first stage planet shaft; 215. connecting columns; 216. a primary planet wheel mounting space; 217. a primary planet wheel; 218. a secondary sun gear; 22. a secondary planetary reduction unit; 221. a secondary planet carrier assembly; 222. a secondary planet wheel; 223. a secondary rotary support disc; 224. a secondary planetary wheel disc; 225. a secondary planet shaft; 226. a secondary planet wheel accommodating cylinder; 226-1, groove; 226-2, dynamic balance adjusting hole; 227. a secondary planet wheel mounting groove; 228. a third-stage sun gear; 23. a three-stage planetary reduction unit; 231. a tertiary planet carrier assembly; 232. a third planet wheel; 233. a three-level rotary supporting disk; 234. an angle detection fluted disc; 235. a third-stage planet wheel shaft; 236. a third-stage planet wheel accommodating sleeve; 237. a notch; 238. an angle detection fluted disc connecting column; 3. a power take-off shaft; 4. a motor output flange; 5. an angle detection device; 6. a ring gear housing; 7. an overload protection device; 7-0, overload protection disc; 7-1, a central shaft; 7-2, ribs; 8. an overload protection gland; 8-1, positioning a groove; 9. an angle detection box; 9-1, a flange box cover; 9-2, an angle detection element; 9-3 potentiometer mounting shaft; 9-4, a potentiometer gear; 9-5, an angle sensor drive shaft; 9-6, an angle sensor; 10. the motor seals the cover.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Referring to fig. 1 to 5, a secondary planetary reduction unit 22 includes a secondary planet carrier assembly 221, a secondary planet wheel 222 mounted in the secondary planet carrier assembly; the secondary planet carrier assembly 221 comprises a secondary rotary support plate 223, a secondary planet wheel disc 224 and a secondary planet shaft 225 integrally arranged on the secondary rotary support plate, and the precision of the mounting position of the secondary planet wheel is guaranteed by adopting an integral design structure; the other end of the secondary planet shaft is fixedly connected with a secondary planet wheel disc, a secondary planet wheel containing barrel 226 is integrally arranged on the secondary planet wheel disc, a secondary planet wheel mounting groove 227 is formed in the secondary planet wheel containing barrel, the secondary planet shaft 225 is located in the secondary planet wheel containing barrel, and a secondary planet wheel 222 is mounted on the secondary planet shaft at the position of the secondary planet wheel mounting groove; the secondary planet gears are simultaneously meshed with the secondary sun gear 219 and the internal teeth of the gear ring shell; a third-stage sun wheel 228 is arranged in the center of the second-stage planetary wheel disc on the side far away from the driving motor; after assembly, the secondary planet wheel of the secondary planet speed reduction unit is meshed with the secondary sun wheel and is meshed with the inner teeth of the gear ring shell to realize secondary speed reduction of power, and the third-stage sun wheel is driven to rotate to transmit the power to the lower-stage speed reduction unit. By adopting the technical scheme, the utility model discloses can realize independent equipment with second grade reduction unit, then wholly assemble the driver, improve assembly efficiency, the second grade planet reduction unit can independently be changed and debugged moreover, improves the qualification rate of product greatly; the position between the various components remains relatively precise,

preferably, a groove 226-1 is formed in the end face of the secondary planet wheel containing cylinder on the side of the secondary rotary supporting disk, and the depth of the groove is equal to the thickness of the secondary rotary supporting disk. The second-level rotary supporting disc is located in the groove, and the overall length of the assembled speed reducer is reduced.

Preferably, three dynamic balance debugging holes 226-2 are formed in the end face of the secondary planet wheel containing barrel on the side of the secondary rotary supporting disc along the circumferential direction, a reference circle where the dynamic balance debugging holes are located is concentric with the secondary planet wheel containing barrel, debugging of the operation stability of the secondary planet speed reducing unit can be adjusted through the dynamic balance debugging holes, the dynamic balance of the secondary planet speed reducing unit can be tested before assembly, and fillers such as glue solution and the like can be added into the dynamic balance debugging holes to perform adjustment when adjustment is needed; in addition, the dynamic balance debugging hole also has the advantages of reducing the whole weight and meeting the light-weight design requirement.

Preferably, the reference circle where the dynamic balance debugging hole is located has a diameter larger than or equal to the outer diameter of the groove, so that direct filler addition after assembly is facilitated, and disassembly for installation is not required.

Preferably, the dynamic balance debugging hole is a blind hole, so that the filler is prevented from falling, and the secondary planetary reduction unit is guaranteed to be blocked due to the falling of the filler.

Referring to fig. 6 to 9, a three-stage planetary reduction driver includes a driving motor 1, a planetary reduction mechanism installed in a gear ring housing 6, a power output shaft 3 and a motor output flange 4, wherein a power shaft of the driving motor is provided with a primary sun gear 11; the primary sun gear is connected with the planetary speed reducing mechanism 2; the planetary reduction mechanism comprises a primary planetary reduction unit 21, a secondary planetary reduction unit 22, a tertiary planetary reduction unit 23 and an angle detection device 5 for detecting the rotation angle of the power output shaft, and a motor sealing cover 10 is arranged on the driving motor for protecting the motor; the above-described two-stage planetary reduction unit 22 adopts the above-described configuration of the one-stage planetary reduction unit. The first-stage planetary reduction unit 21 and the third-stage planetary reduction unit 23 may be first-stage planetary reduction units and third-stage planetary reduction units previously developed by the applicant, specifically refer to CN108980288a. The following technical scheme can be adopted, so that the running stability and the assembly efficiency of the three-stage planetary reduction driver are further improved.

Referring to fig. 10 to 15, the primary planetary reduction unit 21 includes a primary carrier assembly 211, primary planet wheels 218 mounted in the primary carrier assembly; the primary planet carrier assembly comprises a primary rotary support disc 212, a primary planet wheel disc 213 and a primary planet shaft 214 arranged on the primary planet wheel disc, and the primary planet shaft 214 and the primary planet wheel disc are of an integrated structure; the primary rotary supporting disk is fixedly connected with the primary planetary wheel disk 213 through the connecting column 215, and during actual production, the primary planetary shaft 214, the connecting column 215 and the primary planetary wheel disk 213 are integrally formed, preferably injection molding is performed, compared with the prior art, the supporting strength of the primary planetary shaft and the connecting column is ensured, meanwhile, the process and time of secondary assembly are reduced, the concentricity of the primary rotary supporting disk and the primary planetary wheel disk is ensured, the installation error of a primary planetary speed reduction unit is avoided, and the problem that the instability of the operation of a driver is caused because the installation error of the primary planetary speed reduction is accumulated to a secondary speed reduction unit and a tertiary speed reduction unit is solved; a primary planet wheel mounting space 216 is formed between the primary rotary support plate and the primary planet wheel disc, and a primary planet wheel 217 is mounted on the primary planet shaft 214 in the primary planet wheel mounting space; the primary planet wheel 217 is simultaneously meshed with the primary sun wheel 11 and the inner teeth of the gear ring shell 6, and a secondary sun wheel 218 is arranged on the primary planet wheel disc; its theory of operation is that the electronic one-level sun gear of driving motor rotates, and the one-level sun gear drives three planet wheel and rotates, and three planet wheel rotates the internal tooth of meshing and ring gear casing 6, and then drives the coordinated second grade sun gear rotation of one-level planet rim plate, realizes the one-level speed reduction and transmits power to subordinate's speed reduction unit, and this one-level planet speed reduction unit can independently debug and change, improves assembly efficiency, guarantees the qualification rate of assembly back product simultaneously.

And an overload protection device 7 is arranged on the primary planetary reduction unit. The overload protection device comprises an overload protection disc 7-0, wherein a circular groove 2130 is formed in a first-stage planetary wheel disc 213 facing a second-stage planetary reduction unit side, the overload protection disc 7-0 is installed in the groove, a central shaft 7-1 is integrally arranged on the overload protection disc, a second-stage sun wheel 219 is arranged on the central shaft, overload protection is achieved through the overload protection disc, the technical scheme is preferably adopted, ribs 7-2 are arranged on the outer circumference of the overload protection disc along the circumferential direction, limit grooves 2131 matched with the ribs are uniformly distributed in the inner wall of the circular groove of the second-stage planetary wheel disc, the ribs are arranged in the limit grooves in a normal starting state, transmission torsion is achieved, and when the output end is overloaded, the ribs move one by one along the limit grooves, and the purpose of overload protection of a driving motor is achieved.

The outer side of the overload protection disc is embedded with an overload protection gland 8; positioning grooves 8-1 are formed in the periphery of the overload protection gland, positioning blocks 2132 are arranged on the overload protection disc corresponding to the grooves, the first-level planet carrier assembly meeting the lightweight design requirement in actual production is made of plastic components, the positioning blocks can fix the overload protection gland in a hot melting mode, but the overload protection gland is not limited to the above, and the overload protection gland can be bonded to the overload protection disc through an adhesive.

Referring to fig. 16 to 22, the three-stage planetary reduction unit 23 includes a three-stage carrier assembly 231, three-stage planets 232 mounted in the three-stage carrier assembly; the three-stage planet carrier assembly comprises a three-stage rotary supporting disc 233 and an angle detection fluted disc 234, a three-stage planet wheel shaft 235 is arranged between the three-stage rotary supporting disc and the angle detection fluted disc, and a three-stage planet wheel 235 meshed with a three-stage sun wheel 228 is arranged on the three-stage planet wheel shaft; a third-level planet wheel accommodating sleeve 236 is integrally arranged on the third-level rotary supporting disk 23 far away from the driving motor, and an integral structure is adopted, so that the number of parts is reduced, the main purpose is that the positions of the third-level rotary supporting disk 23 and the third-level planet wheel accommodating sleeve 236 are relatively fixed, the position precision of a third-level planet wheel arranged in the third-level rotary supporting disk is further ensured, and meanwhile, the sound absorption effect is achieved; a notch 237 is formed in the side wall of the three-stage planet wheel containing sleeve, and the three-stage planet wheel extends out of the notch to be meshed with the inner teeth of the gear ring shell; an angle detection fluted disc connecting column 238 is arranged on the end surface of the supporting wall of the three-stage planet wheel containing sleeve of the adjacent gap; the angle detection fluted disc connecting column is connected with an angle detection fluted disc 234; the angle detection fluted disc is connected with the power output shaft 3, the angle detection fluted disc and the power output shaft 3 can be of an integral structure or a split assembly structure, and the angle detection fluted disc and the power output shaft are fixedly installed firstly during integral assembly; the third-level planet wheel of the third-level planet speed reduction unit is meshed with the third-level sun wheel, three-level speed reduction of power is achieved through the inner teeth of the gear ring shell, the third-level sun wheel is driven to rotate, power is transmitted to the power output shaft 3 through the angle detection fluted disc, power is output, and the angle detection fluted disc is driven to rotate within a set angle range.

The angle detection device 5 comprises an angle detection box 9 arranged at the side of the shell close to the end of the power output shaft, a flange box cover 9-1 is mounted on the angle detection box far away from the side of the driving motor, the power output shaft extends out of the flange box cover, and an angle detection element 9-2 for detecting the rotation angle of the power output shaft is mounted in the angle detection box.

The angle detection element adopts a gear potentiometer, the gear potentiometer is arranged on a potentiometer mounting shaft 9-3 in the angle detection box, and a potentiometer gear 9-4 of the gear potentiometer is meshed with an angle detection fluted disc 234; an angle sensor driving shaft 9-5 is coaxially arranged on the potential gear, and the angle sensor driving shaft is connected with an angle sensor 9-6. Through gear potentiometer real-time detection and feedback power output shaft's rotation angle to the reflection is installed the utility model discloses the aperture of the executive component (case lid) of driver.

To sum up, the utility model realizes the independence of the second-stage reduction unit, then integrally assembles the driver, improves the assembly efficiency, and simultaneously realizes the independent replacement and debugging of the second-stage planet reduction unit; the two-stage reduction unit of the planetary reduction driver adopts an independent assembly structure, the positions of all parts are kept relatively stable, abnormal sound caused by the accumulation of assembly errors of the two-stage planetary reduction unit in the prior art is avoided, and a foundation is provided for stably transmitting power to the next stage.

The above description is only exemplary of the present invention and should not be taken as limiting, and any modifications, equivalents, improvements, etc., such as materials, dimensions, etc., which are made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims (7)

1. A secondary planet reduction unit comprises a secondary planet carrier assembly, a secondary planet wheel arranged in the secondary planet carrier assembly; the second grade planet carrier subassembly includes second grade rotation supporting disk, second grade planet rim plate and sets up the second grade planet axle on second grade rotation supporting disk, the other end fixed connection second grade planet rim plate of second grade planet axle, its characterized in that: a secondary planet wheel containing cylinder is integrally arranged on the secondary planet wheel disc, a secondary planet wheel mounting groove is formed in the secondary planet wheel containing cylinder, a secondary planet shaft is located in the secondary planet wheel containing cylinder, and a secondary planet wheel is mounted on the secondary planet shaft at the position of the secondary planet wheel mounting groove; and a third-stage sun wheel is arranged at the center of the second-stage planetary wheel disc far away from the driving motor.

2. The two-stage planetary reduction unit according to claim 1, wherein: and a groove is arranged on the end surface of the secondary planet wheel containing cylinder at the side of the secondary rotary supporting disk, and the secondary rotary supporting disk is positioned in the groove.

3. The two-stage planetary reduction unit according to claim 2, wherein: the depth of the groove is equal to the thickness of the secondary rotary supporting disc.

4. The two-stage planetary reduction unit according to claim 2, wherein: three dynamic balance debugging holes are formed in the end face of the secondary planet wheel containing barrel on the side of the secondary rotary supporting plate along the circumferential direction, and a reference circle where the dynamic balance debugging holes are formed is concentric with the secondary planet wheel containing barrel.

5. The two-stage planetary reduction unit according to claim 4, wherein: the diameter of the reference circle where the dynamic balance debugging hole is located is larger than or equal to the outer diameter of the groove.

6. The two-stage planetary reduction unit according to claim 4, wherein: the dynamic balance debugging hole is a blind hole.

7. A three-stage planetary reduction driver comprises a driving motor, a planetary reduction mechanism arranged in a gear ring shell, a power output shaft and a motor output flange, wherein a primary sun gear is arranged on a power shaft of the driving motor; the primary sun gear is connected with the planetary speed reducing mechanism; the planetary reduction mechanism comprises a primary planetary reduction unit, a secondary planetary reduction unit, a tertiary planetary reduction unit and an angle detection device for detecting the rotation angle of the power output shaft; the method is characterized in that: the two-stage planetary reduction unit as claimed in any one of claims 1 to 6.

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