CN106763533B - Electronic lock small tooth difference planetary speed reducer - Google Patents
Electronic lock small tooth difference planetary speed reducer Download PDFInfo
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- CN106763533B CN106763533B CN201710178886.2A CN201710178886A CN106763533B CN 106763533 B CN106763533 B CN 106763533B CN 201710178886 A CN201710178886 A CN 201710178886A CN 106763533 B CN106763533 B CN 106763533B
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- 230000000694 effects Effects 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 230000008569 process Effects 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 238000005728 strengthening Methods 0.000 description 2
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
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- 239000000463 material Substances 0.000 description 1
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H1/00—Toothed gearings for conveying rotary motion
- F16H1/28—Toothed gearings for conveying rotary motion with gears having orbital motion
- F16H1/32—Toothed gearings for conveying rotary motion with gears having orbital motion in which the central axis of the gearing lies inside the periphery of an orbital gear
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/02—Gearboxes; Mounting gearing therein
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/08—General details of gearing of gearings with members having orbital motion
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H1/00—Toothed gearings for conveying rotary motion
- F16H1/28—Toothed gearings for conveying rotary motion with gears having orbital motion
- F16H1/32—Toothed gearings for conveying rotary motion with gears having orbital motion in which the central axis of the gearing lies inside the periphery of an orbital gear
- F16H2001/327—Toothed gearings for conveying rotary motion with gears having orbital motion in which the central axis of the gearing lies inside the periphery of an orbital gear with the orbital gear having internal gear teeth
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- General Engineering & Computer Science (AREA)
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- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
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Abstract
The invention discloses an electronic lock small-tooth-difference planetary reducer which comprises a gear box lower cover, an eccentric shaft, a duplex planetary wheel and a gear box upper cover, wherein the gear box lower cover is provided with a gear box upper cover; the lower cover of the gear box is fixedly connected with a shell of the motor; the lower cover of the gear box is provided with a transmission space, an inlet hole and a first internal gear; the upper cover of the gear box comprises a connecting column and a rotor end, and the rotor end is provided with a second internal gear; the rotor end is movably arranged in the transmission space and rotates in the transmission space; the eccentric shaft is fixedly connected with an output shaft of the motor; a second star wheel and a first star wheel are arranged on the outer side of the duplex planet wheel; the duplex planet wheel is arranged between the lower cover of the gear box and the upper cover of the gear box; the second star wheel is meshed with the second internal gear; the first star wheel is meshed with the first internal gear. The electronic lock small tooth difference planetary reducer only has four large components, namely a gear box lower cover, an eccentric shaft, a duplex planetary wheel and a gear box upper cover, and has the advantages of simple structure, low part cost, simple assembly due to the simple structure, high assembly efficiency and low assembly cost.
Description
Technical Field
The invention relates to the field of electronic lock speed reducers, in particular to a small tooth difference planetary speed reducer of an electronic lock.
Background
The electronic lock speed reducer on the market at present, its gear drive mainly adopts the ordinary gear train transmission, generally 5 grades of gear reduction, 10 gears are constituteed, because the gear all adopts metal material to process and forms, the cost of part is very high, and 3 fixed plates and 2 fixed columns are added, and the part quantity is too much, and the assembly step is complicated, and the installation accuracy requires highly, and whole assembly efficiency is low, and the manufacturing cost of gear box is higher, therefore the cost of electronic lock speed reducer is difficult to descend.
Disclosure of Invention
The invention mainly aims to provide an electronic lock small-tooth-difference planetary reducer which is small in component and convenient to assemble.
The invention provides an electronic lock small-tooth-difference planetary reducer which comprises a gear box lower cover, an eccentric shaft, a duplex planetary wheel and a gear box upper cover, wherein the gear box lower cover is provided with a gear box upper cover; the lower cover of the gear box is fixedly connected with a shell of the motor; the lower cover of the gear box is provided with a transmission space, an inlet hole and a first internal gear; the inner circle space of the inlet hole and the first inner gear are respectively communicated with the transmission space, and the inlet hole and the first inner gear are respectively arranged at two opposite ends of the transmission space; the upper cover of the gear box comprises a connecting column and a rotor end, and the rotor end is provided with a second internal gear; the rotor end is movably arranged in the transmission space and rotates in the transmission space; the eccentric shaft is fixedly connected with an output shaft of the motor and axially penetrates through the duplex planet wheel; a second star wheel and a first star wheel are arranged on the outer side of the duplex planet wheel, and the number of teeth of the first star wheel is greater than that of the second star wheel; the duplex planet wheel is arranged between the lower cover of the gear box and the upper cover of the gear box; the second star wheel is meshed with the second internal gear, and the number of teeth of the second star wheel is smaller than that of the second internal gear; the first star wheel is meshed with the first internal gear, and the number of teeth of the first star wheel is smaller than that of the first internal gear.
Furthermore, the outer side of the lower cover of the gear box is provided with a connecting lug, and the lower cover of the gear box is fixedly connected with the motor at the connecting lug.
Furthermore, two connecting lugs are arranged, and the two connecting lugs are arranged oppositely; the lower cover of the gear box and the motor are fixedly connected by screws at the connecting lug.
Furthermore, a first antifriction bulge and a second antifriction bulge are arranged at the rotor end; the first antifriction bulge and the second antifriction bulge are arranged on the outer side of the rotor end along the circumferential direction; the second antifriction projection is arranged between the first antifriction projection and the connecting column.
Furthermore, a third antifriction bulge is arranged on the end face, far away from the connecting column, of the rotor end; the third antifriction bulge is annular along the circumferential direction of the rotor end; and a fourth antifriction bulge and a fifth antifriction bulge are respectively arranged on two end faces of the duplex planet wheel, and the fourth antifriction bulge and the fifth antifriction bulge are respectively in an annular shape along the circumferential direction of the duplex planet wheel.
Furthermore, reinforcing ribs are arranged on the end face, connected with the connecting column, of the rotor end; the strengthening rib is equipped with a plurality ofly, and a plurality of strengthening ribs use the spliced pole as the center along the radius direction evenly distributed of rotor end.
Further, the inlet aperture and the transmission space are cylindrical; the radius of the inlet opening is smaller than the radius of the transmission space.
Further, one end of the inlet hole, which is far away from the transmission space, is provided with an annular guide surface; the annular guide surface is an annular rounded surface or a chamfered surface.
Furthermore, the eccentric shaft is provided with an eccentric shaft connecting hole, and the output shaft of the motor is connected with the eccentric shaft in an interference fit manner at the eccentric shaft connecting hole.
Further, the number of teeth of the second star wheel is smaller than that of the first star wheel, and the gear ratio of the second star wheel to the second internal gear is 24/27; the gear ratio of the first star gear to the first internal gear is 33/37.
The electronic lock small tooth difference planetary reducer only has four large components, namely a gear box lower cover, an eccentric shaft, a duplex planetary wheel and a gear box upper cover, and has the advantages of simple structure, low part cost, simple assembly due to the simple structure, high assembly efficiency, low assembly cost and low production cost of the whole lock small tooth difference planetary reducer.
Drawings
FIG. 1 is an exploded view of an embodiment of an electronic lock planetary reducer with small teeth difference according to the present invention;
FIG. 2 is a schematic structural diagram of the electronic lock with a small tooth difference planetary reducer connected with a motor according to the second embodiment of the present invention;
fig. 3 is a schematic cross-sectional structure of fig. 2.
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
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. 1-3, an embodiment of the electronic lock small tooth difference planetary reducer of the invention comprises a gear box lower cover 4, an eccentric shaft 3, a duplex planetary gear 2 and a gear box upper cover 1; the lower cover 4 of the gear box is fixedly connected with a shell of the motor 5; the gear box lower cover 4 is provided with a transmission space 43, an inlet hole 45 and a first internal gear 41; the inlet hole 45 and the inner circular space of the first internal gear 41 are respectively communicated with the transmission space 43, and the inlet hole 45 and the first internal gear 41 are respectively arranged at two opposite ends of the transmission space 43; the upper cover 1 of the gear box is an integral component, the upper cover of the upper cover 1 of the gear box comprises a connecting column 11 and a rotor end 12, and the rotor end 12 is provided with a second internal gear 13; the rotor end 12 is movably arranged in the transmission space 43, the rotor end 12 rotates in the transmission space 43, and the transmission space 43 is matched with the rotor end 12; the eccentric shaft 3 is fixedly connected with an output shaft 51 of the motor 5; the lower cover 4 of the gear box is provided with a rotating shaft hole 44, and an output shaft 51 penetrates through the rotating shaft hole 44 and then is connected with the eccentric shaft 3; the eccentric shaft 3 axially penetrates through the duplex planet wheel 2 along the shaft hole 23 of the duplex planet wheel 2; a second star wheel 21 and a first star wheel 22 are arranged on the outer side of the duplex planet wheel 2, and the number of teeth of the first star wheel 22 is greater than that of the second star wheel 21; the duplex planet wheel 2 is arranged between the lower cover 4 of the gear box and the upper cover 1 of the gear box; the second star wheel 21 is meshed with the second internal gear 13, and the number of teeth of the second star wheel 21 is less than that of the second internal gear 13; the first star gear 22 meshes with the first internal gear 41, and the number of teeth of the first star gear 22 is smaller than that of the first internal gear 41. The electronic lock few-tooth-difference planetary reducer only comprises four large components, namely a gear box lower cover 4, an eccentric shaft 3, a duplex planet wheel 2 and a gear box upper cover 1, and is simple in structure and low in part cost. The rotor end 12 of the gear box upper cover 1 is clamped in the transmission space 43, the structure is stable, the side part of the rotor end 12 is abutted against the side wall of the transmission space 43, the gear box upper cover 1 is not prone to shaking, and the electronic lock planetary reducer with small tooth difference works stably.
When the motor 5 works, the output shaft 51 of the motor 5 drives the eccentric shaft 3 to rotate, and along with the rotation of the eccentric shaft 3, the eccentric shaft 3 drives the duplex planet wheel 2 which passes through the eccentric shaft 3 to revolve around the output shaft 51; in the revolution process of the duplex planet wheel 2, because the first planet wheel 22 is meshed with the first internal gear 41, the number of teeth of the first internal gear 41 is greater than that of the first planet wheel 22, and the lower cover 4 of the gear box is fixed, the duplex planet wheel 2 rotates in the revolution process; in the rotation process of the duplex planet wheel 2, the second planet wheel 21 is meshed with the second inner gear 13, so that the duplex planet wheel 2 drives the gear box upper cover 1 to rotate when rotating; the transmission piece connected with the connecting column 11 in the electronic lock is driven by the gear box upper cover 1 when rotating. The gear ratio i of the electronic locking planetary reduction gear with small tooth difference is z1 × z4/(z1 × z4-z2 × z3), where z1 is the number of teeth of the first star gear 22, z2 is the number of teeth of the first internal gear 41, z3 is the number of teeth of the second star gear 21, and z4 is the number of teeth of the second internal gear 13.
In the assembling process, the eccentric shaft 3 is connected with the output shaft 51 in an interference fit manner, and then the lower cover 4 of the gear box is fixed on the motor 5, or the lower cover 4 of the gear box is fixed on the motor 5, and then the eccentric shaft 3 is connected with the output shaft 51 in an interference fit manner; the external protrusion of the output shaft 51 in the motor 5 is inserted into the rotating shaft hole 44 to play a positioning role, then the duplex planet wheel 2 is installed, the first planet wheel 22 of the duplex planet wheel 2 is aligned and meshed with the first internal gear 41, then the rotor end 12 is inserted into a part of the transmission space 43 through the inlet hole 45 and the second planet wheel 21 is aligned and meshed with the second internal gear 13, and then the rotor end 12 is completely inserted into the transmission space 43; the rotor end 12 is slightly larger than the inlet hole 45, so that an interference effect is generated, the rotor end 12 is not easy to take out in the transmission space 43, and the electronic lock small-tooth-difference planetary reducer is stable in structure.
Referring to fig. 2, in the present embodiment, the gear box lower cover 4 is provided with a coupling lug 42 on the outer side, and the gear box lower cover 4 and the motor 5 are fixedly connected at the coupling lug 42. The connecting lug 42 is arranged on the outer side of the gear box lower cover 4, the gear box lower cover 4 does not need to be designed to be too large for a connecting position, the gear box lower cover 4 can be reduced as much as possible, and the cost of the gear box lower cover 4 is reduced.
In the embodiment, two connecting lugs 42 are provided, the two connecting lugs 42 are oppositely arranged, and the two opposite connecting lugs 42 can ensure that the lower cover 4 of the gear box is stably connected and stressed uniformly without deviation; the connecting lug 42 is provided with a fixing hole 421, and the gear box lower cover 4 and the motor 5 are fixedly connected by screws at the fixing hole 421 of the connecting lug 42. The gear box lower cover 4 and the motor 5 are connected conveniently and firmly.
In the present embodiment, the rotor end 12 is provided with a first friction reducing projection 16 and a second friction reducing projection 15; the first antifriction projections 16 and the second antifriction projections 15 are arranged on the outer side of the rotor end along the circumferential direction; the second antifriction projections 15 are arranged between the first antifriction projections 16 and the connecting column; first antifriction arch 16 and second antifriction arch 15 are bellied arc, and first antifriction arch 16 and second antifriction arch 15 can reduce the area of contact between rotor end 12 and the interior wall of transmission space 43, and then reduce the frictional force between rotor end 12 and the interior wall of transmission space 43, can play and reduce no-load torque, reduce no-load current, improve work efficiency, increase of service life's effect, electronic lock few tooth difference planetary reducer life is longer, and the work effect is better.
The end surface of the rotor end 12 far away from the connecting column 11 is provided with a third antifriction bulge 17; the third antifriction projections 17 are annular along the circumferential direction of the rotor end 12; the third friction reducing protrusions 17 have the effect of reducing the friction between the rotor end 12 and the inner wall of the transmission space 43; two end faces of the duplex planet wheel 2 are respectively provided with a fourth antifriction bulge 25 and a fifth antifriction bulge 24, and the fourth antifriction bulge 25 and the fifth antifriction bulge 24 are respectively in an annular shape along the circumferential direction of the duplex planet wheel 2. The fourth antifriction projection 25 has the effect of reducing the friction force between the duplex planet wheel 2 and the lower cover 4 of the gearbox; the fifth antifriction projection 24 serves to reduce the friction between the duplex planet 2 and the rotor end 12. The third antifriction projection 17, the fourth antifriction projection 25 and the fifth antifriction projection 24 can play a role in reducing no-load torque, reducing no-load current, improving work efficiency and prolonging service life, and the electronic lock planetary reducer with small tooth difference has longer service life and better work effect.
In the embodiment, the end face of the rotor end 12 connected with the connecting column 11 is provided with a reinforcing rib 14; the plurality of reinforcing ribs 14 are provided, and the plurality of reinforcing ribs 14 are uniformly distributed along the radial direction of the rotor end 12 with the connecting column 11 as the center. The reinforcing ribs 14 not only ensure the strength of the upper cover 1 of the gear box, but also can reduce the material consumption of the upper cover 1 of the gear box and reduce the cost of the upper cover 1 of the gear box.
In the present embodiment, the inlet hole 45 and the transmission space 43 are both cylindrical; the radius of the inlet opening 45 is smaller than the radius of the transmission space 43; the side wall of the access hole 45 defines a detent that is smaller than the drive space 43, and the detent defined by the side wall of the access hole 45 serves to confine the rotor end 12 when the rotor end 12 is interference fit through the access hole 45 into the drive space 43.
In the present embodiment, the end of the inlet bore 45 remote from the transmission space 43 is provided with an annular guide surface 46; the annular guide surface 46 is an annular rounded or chamfered surface, and the radius of the annular guide surface 46 increases the further away from the transmission space 43. The annular guide surface 46 may facilitate alignment and entry of the rotor end 12 into the access bore 45.
Referring to fig. 3, in the present embodiment, the eccentric shaft 3 is provided with an eccentric shaft connecting hole 31, and the output shaft 51 of the motor 5 is connected to the eccentric shaft 3 in an interference fit manner in the eccentric shaft connecting hole 31. When the output shaft 51 of the motor 5 rotates, the eccentric shaft 3 is rotated.
In the present embodiment, the number of teeth of the second star wheel 21 is smaller than that of the first star wheel 22, and the gear ratio of the second star wheel 21 to the second internal gear 13 is 24/27; the gear ratio of the first star gear 22 to the first internal gear 41 is 33/37, the number of teeth of the second star gear 21 is 24, the number of teeth of the second internal gear 13 is 27, the number of teeth of the first star gear 22 is 33, and the number of teeth of the first internal gear 41 is 37. Since the transmission ratio i of the electronic lock small tooth difference planetary reducer is z1 × z4/(z1 × z4-z2 × z3), the transmission ratio i of the electronic lock small tooth difference planetary reducer is 297 in the embodiment.
The transmission ratio is the rotation speed ratio of the input end and the output end of the electronic lock small tooth difference planetary reducer, the input end of the electronic lock small tooth difference planetary reducer is an eccentric shaft 3, the eccentric shaft 3 is fixedly connected with an output shaft 51 of a motor 5, the rotation speed of the input end of the electronic lock small tooth difference planetary reducer is the same as the rotation speed of the output shaft 51 of the motor 5, and the output end of the electronic lock small tooth difference planetary reducer is a connecting column 11.
In this embodiment, the connecting column 11 has a semi-cylindrical shape with a D-shaped cross section. The semi-cylindrical shape is beneficial to matching the connecting column 11 with a D-shaped hole of the electronic lock core to drive the lock core to rotate so as to complete the actions of locking and unlocking; the semi-cylindrical shape means that a part is removed along the axial direction on the basis of the cylindrical shape to form a clamping surface, so that the connecting column 11 can conveniently drive parts connected with the clamping surface, and the cross section of the connecting column 11 can also be in the shape of a crescent moon and the like. .
The electronic lock small tooth difference planetary reducer only comprises four large components, namely a gear box lower cover 4, an eccentric shaft 3, a duplex planetary wheel 2 and a gear box upper cover 1, and has the advantages of simple structure, low part cost, simple assembly due to the simple structure, high assembly efficiency, low assembly cost and low production cost of the whole lock small tooth difference planetary reducer.
The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
The invention relates to a planetary reducer with small tooth difference for an electronic lock
A1, an electronic lock small tooth difference planetary reducer, comprising a gear box lower cover 4, an eccentric shaft 3, a duplex planetary wheel 2 and a gear box upper cover 1;
the lower cover 4 of the gear box is fixedly connected with a shell of a motor 5;
the gear box lower cover 4 is provided with a transmission space 43, an inlet hole 45 and a first internal gear 41;
the inlet hole 45 and the inner circular space of the first internal gear 41 are respectively communicated with the transmission space 43, and the inlet hole 45 and the first internal gear 41 are respectively arranged at two opposite ends of the transmission space 43;
the upper cover 1 of the gear box comprises a connecting column 11 and a rotor end 12, and the rotor end 12 is provided with a second internal gear 13;
the rotor end 12 is movably arranged in the transmission space 43, and the rotor end 12 rotates in the transmission space 43;
the eccentric shaft 3 is fixedly connected with an output shaft 51 of the motor 5 and axially penetrates through the duplex planet wheel 2;
a second star wheel 21 and a first star wheel 22 are arranged on the outer side of the duplex planet wheel 2, and the number of teeth of the first star wheel 22 is greater than that of the second star wheel 21;
the duplex planet wheel 2 is arranged between the lower cover 4 of the gear box and the upper cover 1 of the gear box;
the second star wheel 21 is meshed with the second internal gear 13, and the number of teeth of the second star wheel 21 is less than that of the second internal gear 13;
the first star wheel 22 is meshed with the first internal gear 41, and the number of teeth of the first star wheel 22 is smaller than that of the first internal gear 41.
A2, the electronic lock few teeth difference planetary reducer of A1, the gear box lower cover 44 is provided with a connecting lug 42 on the outer side, the gear box lower cover 4 and the motor 5 are fixedly connected at the connecting lug 42.
A3, the electronic lock planetary reducer with small tooth difference as A2, wherein two connecting lugs 42 are arranged, and the two connecting lugs 42 are oppositely arranged; the lower gear box cover 4 and the motor 5 are fixedly connected by screws at the connecting lugs 42.
A4, the electronic lock few teeth difference planetary reducer of A1, the rotor end 12 is provided with a first antifriction projection 16 and a second antifriction projection 15; the first antifriction projections 16 and the second antifriction projections 15 are arranged on the outer side of the rotor end 12 along the circumferential direction; the second antifriction projections 15 are arranged between the first antifriction projections 16 and the connecting column 11.
A5, the electronic lock planetary reducer with small teeth difference as A1, wherein the end face of the rotor end 12 far away from the connecting column 11 is provided with a third antifriction bulge 17; the third wear-reducing projection 17 is annular along the circumferential direction of the rotor end 12; and a fourth antifriction bulge 25 and a fifth antifriction bulge 24 are respectively arranged on two end faces of the duplex planet wheel 2, and the fourth antifriction bulge 25 and the fifth antifriction bulge 24 are respectively in an annular shape along the circumferential direction of the duplex planet wheel 2.
A6, the electronic lock planetary reducer with small tooth difference as A1, wherein the end face of the rotor end 12 connected with the connecting column 11 is provided with a reinforcing rib 14; the reinforcing ribs 14 are provided in plurality, and the plurality of reinforcing ribs 14 are uniformly distributed along the radial direction of the rotor end 12 with the connecting column 11 as the center.
A7, the electronic lock small teeth difference planetary reducer as A1, the inlet hole 45 and the transmission space 43 are cylindrical; the radius of the inlet opening 45 is smaller than the radius of the transmission space 43.
A8, the electronic lock small teeth difference planetary reducer as A7, wherein the end of the inlet hole 45 far away from the transmission space 43 is provided with an annular guide surface 46; the annular guide surface 46 is an annular rounded or chamfered surface.
The electronic lock planetary reducer with small tooth difference according to a9 and the electronic lock planetary reducer with small tooth difference according to a1, wherein the eccentric shaft 3 is provided with an eccentric shaft connecting hole 31, and the output shaft 51 of the motor 5 is connected with the eccentric shaft 3 in an interference fit mode in the eccentric shaft connecting hole 31.
A10, namely the electronic lock planetary reducer with small tooth difference as described in a1, wherein the number of teeth of the second star wheel 21 is smaller than that of the first star wheel 22, and the gear ratio of the second star wheel 21 to the second internal gear 13 is 24/27;
the gear ratio of the first star gear 22 to the first internal gear 41 is 33/37.
Claims (10)
1. A few tooth difference planetary reducer of electronic lock, wherein include gear box lower cover, eccentric shaft, pair planet wheel and gear box upper cover;
the lower cover of the gear box is fixedly connected with a shell of the motor;
the lower cover of the gear box is provided with a transmission space, an inlet hole and a first internal gear;
the inner circle spaces of the inlet hole and the first inner gear are respectively communicated with the transmission space, and the inlet hole and the first inner gear are respectively arranged at two opposite ends of the transmission space;
the upper cover of the gear box comprises a connecting column and a rotor end, and the rotor end is provided with a second internal gear;
the rotor end is movably arranged in the transmission space and rotates in the transmission space;
the side wall of the inlet hole forms a clamping position smaller than the transmission space, and the rotor end passes through the inlet hole in an interference mode to enter the transmission space;
the eccentric shaft is fixedly connected with an output shaft of the motor and axially penetrates through the duplex planet wheel;
a second star wheel and a first star wheel are arranged on the outer side of the duplex planet wheel, and the number of teeth of the first star wheel is greater than that of the second star wheel;
the duplex planet wheel is arranged between the lower cover of the gear box and the upper cover of the gear box;
the second star wheel is meshed with the second internal gear, and the number of teeth of the second star wheel is smaller than that of the second internal gear;
the first star wheel is meshed with the first internal gear, and the number of teeth of the first star wheel is smaller than that of the first internal gear.
2. The electronic lock few teeth difference planetary reducer of claim 1, characterized in that the gear box lower cover is provided with a connection lug on the outside, and the gear box lower cover and the motor are fixedly connected at the connection lug.
3. The electronic lock few-tooth-difference planetary reducer according to claim 2, wherein there are two of said engaging lugs, and the two engaging lugs are oppositely arranged; the gear box lower cover and the motor are fixedly connected at the connecting lug through screws.
4. The electronic lock small teeth difference planetary reducer according to claim 1, wherein the rotor end is provided with a first antifriction projection and a second antifriction projection; the first antifriction bulge and the second antifriction bulge are arranged on the outer side of the rotor end along the circumferential direction; the second antifriction protrusions are arranged between the first antifriction protrusions and the connecting column.
5. The electronic lock planetary reducer with small tooth difference according to claim 1, wherein the end surface of the rotor end far away from the connecting column is provided with a third antifriction protrusion; the third antifriction bulge is annular along the circumferential direction of the rotor end; and a fourth antifriction bulge and a fifth antifriction bulge are respectively arranged on two end faces of the duplex planet wheel, and the fourth antifriction bulge and the fifth antifriction bulge are respectively in an annular shape along the circumferential direction of the duplex planet wheel.
6. The electronic lock planetary reducer with small tooth difference according to claim 1, wherein the end face of the rotor end connected with the connecting column is provided with a reinforcing rib; the reinforcing ribs are arranged in a plurality of numbers, and the reinforcing ribs are uniformly distributed along the radius direction of the rotor end by taking the connecting column as the center.
7. The electronic lock few tooth difference planetary reducer of claim 1, characterized in that the inlet hole and the transmission space are cylindrical; the radius of the inlet hole is smaller than the radius of the transmission space.
8. The electronic lock few teeth difference planetary reducer of claim 7, characterized in that, the end of the inlet hole far from the transmission space is provided with an annular guide surface; the annular guide surface is an annular chamfer surface.
9. The electronic lock small teeth difference planetary reducer according to claim 1, wherein the eccentric shaft is provided with an eccentric shaft connection hole, and the output shaft of the motor is connected with the eccentric shaft in an interference fit manner at the eccentric shaft connection hole.
10. The electronic lock small tooth difference planetary reducer according to claim 1, wherein the number of teeth of the second star wheel is smaller than that of the first star wheel, and the gear ratio of the second star wheel to the second internal gear is 24/27;
the gear ratio of the first star wheel to the first internal gear is 33/37.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710178886.2A CN106763533B (en) | 2017-03-23 | 2017-03-23 | Electronic lock small tooth difference planetary speed reducer |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710178886.2A CN106763533B (en) | 2017-03-23 | 2017-03-23 | Electronic lock small tooth difference planetary speed reducer |
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| Publication Number | Publication Date |
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| CN106763533A CN106763533A (en) | 2017-05-31 |
| CN106763533B true CN106763533B (en) | 2020-04-28 |
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| CN201710178886.2A Expired - Fee Related CN106763533B (en) | 2017-03-23 | 2017-03-23 | Electronic lock small tooth difference planetary speed reducer |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2195656Y (en) * | 1994-09-02 | 1995-04-26 | 郭俊福 | Toothed planet-gear speed reducer |
| CN2223384Y (en) * | 1995-05-30 | 1996-03-27 | 谢俊慈 | Duplex planetary gear speed reducer |
| KR20050108491A (en) * | 2004-05-12 | 2005-11-17 | 대한민국(창원대학교) | Differential system planetary gear reducer |
| CN202851827U (en) * | 2012-09-19 | 2013-04-03 | 上海惠深工具科技有限公司 | Garden machine small-tooth-difference transmission mechanism |
| JP2014055653A (en) * | 2012-09-13 | 2014-03-27 | Aisin Seiki Co Ltd | Planetary gear speed reduction mechanism |
| CN104265968A (en) * | 2014-08-26 | 2015-01-07 | 苏州市职业大学 | Electric actuator based on planetary gear drive |
| CN205639487U (en) * | 2016-05-16 | 2016-10-12 | 李敏 | Poor NN type planet gear of few tooth of two eccentric shafts |
| CN206816759U (en) * | 2017-03-23 | 2017-12-29 | 深圳市创晶辉精密塑胶模具有限公司 | Electronic lock planetary speed reducer with small tooth number difference |
-
2017
- 2017-03-23 CN CN201710178886.2A patent/CN106763533B/en not_active Expired - Fee Related
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2195656Y (en) * | 1994-09-02 | 1995-04-26 | 郭俊福 | Toothed planet-gear speed reducer |
| CN2223384Y (en) * | 1995-05-30 | 1996-03-27 | 谢俊慈 | Duplex planetary gear speed reducer |
| KR20050108491A (en) * | 2004-05-12 | 2005-11-17 | 대한민국(창원대학교) | Differential system planetary gear reducer |
| JP2014055653A (en) * | 2012-09-13 | 2014-03-27 | Aisin Seiki Co Ltd | Planetary gear speed reduction mechanism |
| CN202851827U (en) * | 2012-09-19 | 2013-04-03 | 上海惠深工具科技有限公司 | Garden machine small-tooth-difference transmission mechanism |
| CN104265968A (en) * | 2014-08-26 | 2015-01-07 | 苏州市职业大学 | Electric actuator based on planetary gear drive |
| CN205639487U (en) * | 2016-05-16 | 2016-10-12 | 李敏 | Poor NN type planet gear of few tooth of two eccentric shafts |
| CN206816759U (en) * | 2017-03-23 | 2017-12-29 | 深圳市创晶辉精密塑胶模具有限公司 | Electronic lock planetary speed reducer with small tooth number difference |
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| Publication number | Publication date |
|---|---|
| CN106763533A (en) | 2017-05-31 |
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