Planetary-like transmission structure, planetary transmission structure, gear motor and moped

Abstract

The utility model relates to a planet-like transmission structure, a planet transmission structure, a gear motor and a moped. The planet-like transmission structure comprises a duplex planet wheel transmission unit, a first output transmission unit and a second output transmission unit. The speed reduction motor has the advantages that the duplex planet wheel transmission units rotate and do not revolve in a transmission shaft structure, so that sensor elements can be conveniently arranged in the speed reduction motor, faults of the sensor elements caused by cable problems are reduced, and the information transmission efficiency is improved; a plurality of duplex planet wheel transmission units, a first output transmission unit and a second output transmission unit are used as a final-stage speed reduction structure of the speed reduction mechanism, so that the transmission ratio can be increased, and the size of a speed reduction motor is reduced; through cooperation of the first output transmission unit and the second output transmission unit, the output shaft of the motor and the output shaft of the speed reducing mechanism can be collinear, and the size of the speed reducing motor is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of reduction motors for power-assisted vehicles, in particular to a planetary transmission structure, a planetary transmission structure, a reduction motor and a power-assisted vehicle. Background Art

[0002] The power-assisted motor is the power source of assisted travel vehicles. The size, weight and shape of the power-assisted motor have a great influence on the layout of the travel vehicle. The transmission ratio of the motor deceleration affects the output torque of the motor and affects the performance of the motor.

[0003] The motors of existing power-assisted travel tools include the following two types:

[0004] 1) The first is that the output shaft of the motor and the output shaft of the reduction mechanism are not on the same straight line. The reduction mechanism outputs power after multiple stages of reduction. This type of motor has a complex shape and a small reduction ratio. In addition, this type of motor is generally large in size and heavy in weight. Since travel equipment often has limited space near the drive shaft, it is difficult to arrange it. The motor has a small output torque under the same volume, which affects the performance of the motor.

[0005] 2) The second type is that the output shaft of the motor and the output shaft of the reduction mechanism are on the same straight line. The shape is relatively simple, but the space is limited and it is difficult to achieve a larger transmission ratio. Since all planetary reductions are used, the internal parts are basically moving parts, and it is difficult to transmit information from internal sensor components.

[0006] Therefore, the existing motor has the following disadvantages:

[0007] 1) The output shaft of the motor and the output shaft of the reduction mechanism are not on the same straight line, the shape is complex, it is difficult to arrange, and the weight is heavy;

[0008] 2) The use of planetary reduction gears makes it impossible to place sensor components and difficult to transmit information;

[0009] 3) The use of planetary reduction gears will easily lead to large motor size and small transmission ratio.

[0010] At present, there is no effective solution to the problems existing in the relevant technology, such as the motor output shaft and the output shaft of the reduction mechanism are not colinear, it is difficult to place sensor elements, it is difficult to transmit information, the motor is large in size, and the transmission ratio is relatively small. Utility Model Content

[0011] The purpose of the utility model is to provide a planetary transmission structure, a planetary transmission structure, a reduction motor and a power-assisted vehicle in view of the deficiencies in the prior art, so as to solve the problems existing in the related art such as the output shaft of the motor and the output shaft of the reduction mechanism are not colinear, it is difficult to place sensor elements, it is difficult to transmit information, the motor is large in size, and the transmission is relatively small.

[0012] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0013] In a first aspect, a planetary transmission structure is provided, comprising:

[0014] A plurality of double planetary gear transmission units, wherein the plurality of double planetary gear transmission units are disposed around the interior of the reduction motor, and the large-diameter ends of the plurality of double planetary gear transmission units are respectively connected to the sun gear units of the planetary transmission structure for self-rotation under the action of the sun gear units of the planetary transmission structure;

[0015] A first output transmission unit, wherein the second ends of the first output transmission unit are respectively transmission-connected to the small-diameter ends of the plurality of double-coupled planetary gear transmission units, and the first output transmission unit is coaxially arranged with the transmission shaft structure for rotating under the action of the plurality of double-coupled planetary gear transmission units;

[0016] A second output transmission unit, wherein the first end of the second output transmission unit is transmission-connected to the second end of the first output transmission unit, the first end of the second output transmission unit is transmission-connected to the flywheel structure, and the second output transmission unit is coaxially arranged with the transmission shaft structure, and is used for driving the flywheel structure to rotate under the action of the first output transmission unit.

[0017] In some embodiments, the double planetary gear transmission unit comprises:

[0018] A double gear shaft element, wherein the double gear shaft element is fixedly arranged inside the reduction motor;

[0019] A large end gear element, which is rotatably disposed at the second end of the duplex gear shaft element and is drivingly connected to the sun gear unit of the planetary transmission structure, and is used for self-rotation under the action of the sun gear unit of the planetary transmission structure;

[0020] A small-end gear element is rotatably disposed at the first end of the dual-gear shaft element, fixedly connected to the large-end gear element, and transmission-connected to the first output transmission unit, and is used for self-rotation under the action of the large-end gear element to drive the first output transmission unit to rotate.

[0021] In some of the embodiments, the double planetary gear transmission unit further comprises:

[0022] A shaft sleeve element is coaxially arranged with the duplex gear shaft element and the small end gear element, and is connected with the duplex gear shaft element and the small end gear element, respectively.

[0023] In some of the embodiments, the double planetary gear transmission unit further comprises:

[0024] A first bearing element is disposed between the duplex gear shaft element and the large end gear element.

[0025] In some embodiments, the first output transmission unit includes:

[0026] a first bracket element, wherein a first end of the first bracket element is drivingly connected to a second end of the second output transmission unit, and the first bracket element is coaxially arranged with the transmission shaft structure for driving the second output transmission unit to rotate;

[0027] The first transmission element is arranged at the second end of the first bracket element and is transmission-connected to the small-diameter ends of the plurality of double-coupled planetary gear transmission units, and is used for driving the first bracket element to rotate under the action of the plurality of double-coupled planetary gear transmission units.

[0028] In some embodiments, the second output transmission unit includes:

[0029] a second bracket element, wherein the second end of the second bracket element is drivingly connected to the first end of the first output transmission unit, and the second bracket element is coaxially arranged with the transmission shaft structure for rotating under the action of the first output transmission unit;

[0030] A connecting element is arranged at the first end of the second bracket element and is transmission-connected to the flywheel structure, so as to drive the flywheel structure to rotate under the action of the second bracket element.

[0031] In some of the embodiments, it also includes:

[0032] A fixed frame unit is fixedly arranged inside the reduction motor, and a plurality of the double planetary gear transmission units are fixedly arranged on the fixed frame unit. The second end of the fixed frame unit is transmission-connected with the planetary gear transmission unit of the planetary transmission structure, so as to make the planetary transmission structure rotate.

[0033] In some embodiments, the fixing frame unit comprises:

[0034] A fixing frame element, wherein the fixing frame element is arranged inside the reduction motor;

[0035] a second transmission element, which is disposed at the second end of the fixing frame element and is transmission-connected to the planetary gear transmission unit of the planetary transmission structure, and is used to make the planetary transmission structure rotate;

[0036] A plurality of first groove elements are circumferentially and distributedly disposed on the first end of the fixing frame element and are used to accommodate a plurality of the double planetary gear transmission units.

[0037] In some of the embodiments, the fixing frame unit further comprises:

[0038] A plurality of mounting elements, wherein the plurality of mounting elements are distributed and arranged on the fixing frame element;

[0039] A plurality of fixing elements are respectively connected to the corresponding mounting elements and the housing structure, and are used to fix the fixing frame element.

[0040] In some of the embodiments, it also includes:

[0041] A unidirectional motion unit is arranged inside and / or outside the second output transmission unit and is used to make the second output transmission unit move in one direction.

[0042] In some of the embodiments, the unidirectional motion unit comprises:

[0043] A first unidirectional motion element is disposed between the first output transmission unit and the second output transmission unit and is used to enable the second output transmission unit to move in one direction.

[0044] In some of the embodiments, the unidirectional motion unit comprises:

[0045] A second unidirectional motion element is disposed between the second output transmission unit and the transmission shaft structure, and is used to enable the second output transmission unit to move in one direction.

[0046] In some of the embodiments, it also includes:

[0047] A first bearing unit, wherein the first bearing unit is connected to the first output transmission unit and the second output transmission unit respectively.

[0048] In some embodiments, the first bearing unit comprises:

[0049] A second bearing element, wherein the second bearing element is disposed between the first output transmission unit and the second output transmission unit, and is connected to the first output transmission unit and the second output transmission unit respectively.

[0050] In some embodiments, the first bearing unit comprises:

[0051] A third bearing element is disposed outside the second output transmission unit and is connected to the second output transmission unit and a housing structure respectively.

[0052] In some embodiments, the first bearing unit comprises:

[0053] A fourth bearing element is disposed inside the second output transmission unit and is respectively connected to the second output transmission unit and the transmission shaft structure.

[0054] In some of the embodiments, it also includes:

[0055] A washer unit is arranged between the first output transmission unit and the second output transmission unit.

[0056] In some of the embodiments, it also includes:

[0057] A torque monitoring unit is disposed inside the second output transmission unit and between the second output transmission unit and the transmission shaft structure, and is used for monitoring torque.

[0058] In a second aspect, a planetary transmission structure is provided, which is transmission-connected to the quasi-planetary transmission structure as described in the first aspect, comprising:

[0059] A planet carrier unit, wherein the planet carrier unit is coaxially arranged with the quasi-planetary transmission structure;

[0060] A planetary gear transmission unit, which is arranged at the second end of the planetary carrier unit and is drivingly connected to the sun gear unit of the previous planetary transmission structure, and is used to drive the planetary carrier unit to rotate under the action of the sun gear unit of the previous planetary transmission structure;

[0061] A sun gear unit is arranged at the first end of the planetary carrier unit and is drivingly connected to the large diameter end of the double planetary gear transmission unit, and is used to drive the double planetary gear transmission unit to rotate under the action of the planetary carrier unit.

[0062] In some of the embodiments, the planet carrier unit comprises:

[0063] A planetary carrier element, wherein the planetary carrier element is coaxially arranged with the planetary transmission structure, the sun gear unit is arranged at a first end of the planetary carrier element, and is connected to the planetary gear transmission unit, and is used to drive the sun gear unit to rotate under the action of the planetary gear transmission unit;

[0064] A plurality of second groove elements are disposed around the planet carrier element and are respectively connected to the planetary gear transmission units.

[0065] In some embodiments, the planetary gear transmission unit comprises:

[0066] A plurality of planetary transmission shaft elements, wherein the plurality of planetary transmission shaft elements are disposed around the planet carrier unit;

[0067] A plurality of planetary gear elements are arranged on the corresponding planetary transmission shaft elements and are drivingly connected to the sun gear unit of the previous planetary transmission structure, so as to drive the planetary carrier unit to rotate under the action of the sun gear unit of the previous planetary transmission structure.

[0068] In some of the embodiments, it also includes:

[0069] The second bearing unit is coaxially arranged with the planetary carrier unit and is respectively connected with the planetary carrier unit and the transmission shaft structure.

[0070] In a third aspect, a reduction motor is provided, comprising:

[0071] A planetary transmission structure as described in the first aspect.

[0072] In a fourth aspect, a reduction motor is provided, comprising:

[0073] The planetary transmission structure as described in the first aspect;

[0074] As in the planetary transmission structure described in the second aspect, the planetary transmission structure is transmission-connected to the quasi-planetary transmission structure.

[0075] In a fifth aspect, a power-assisted vehicle is provided, comprising:

[0076] A planetary transmission structure as described in the first aspect.

[0077] In a sixth aspect, a power-assisted vehicle is provided, comprising:

[0078] A reduction motor as described in the fourth aspect.

[0079] In a seventh aspect, a power-assisted vehicle is provided, comprising:

[0080] The planetary transmission structure as described in the first aspect;

[0081] A planetary transmission structure as described in the second aspect.

[0082] In an eighth aspect, a power-assisted vehicle is provided, comprising:

[0083] A reduction motor as described in the fourth aspect.

[0084] The utility model adopts the above technical solution, and compared with the prior art, has the following technical effects:

[0085] The quasi-planetary transmission structure, planetary transmission structure, reduction motor and power-assisted vehicle of the utility model utilize a plurality of double-coupled planetary gear transmission units for self-rotation instead of revolution with a transmission shaft structure, so that sensor elements can be easily arranged inside the reduction motor, thereby reducing the failure of sensor elements due to cable problems and improving the efficiency of information transmission; utilizing a plurality of double-coupled planetary gear transmission units, a first output transmission unit and a second output transmission unit as the final reduction structure of the reduction mechanism can improve the transmission ratio and reduce the size of the reduction motor; utilizing the cooperation of the first output transmission unit and the second output transmission unit can make the output shaft of the motor and the output shaft of the reduction mechanism collinear, thereby reducing the size of the reduction motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0086] Figure 1 is a schematic diagram of a planetary transmission structure according to an embodiment of the utility model (I);

[0087] Figure 2 a~ Figure 2 b is a cross-sectional view of a planetary transmission structure according to an embodiment of the utility model;

[0088] Figure 3 a is a schematic diagram of a double planetary gear transmission unit according to an embodiment of the utility model;

[0089] Figure 3 b is a cross-sectional view of a double planetary gear transmission unit according to an embodiment of the utility model;

[0090] Figure 4 a is a schematic diagram of a first output transmission unit according to an embodiment of the utility model;

[0091] Figure 4 b is a cross-sectional view of the first output transmission unit according to an embodiment of the utility model;

[0092] Figure 5 a is a schematic diagram of a second output transmission unit according to an embodiment of the utility model;

[0093] Figure 5 b is a cross-sectional view of a second output transmission unit according to an embodiment of the utility model;

[0094] Figure 6 a~ Figure 6 b is a schematic diagram of a fixing frame unit according to an embodiment of the utility model;

[0095] Figure 7 is a schematic diagram of a unidirectional motion unit according to an embodiment of the utility model;

[0096] Figure 8 is a schematic diagram of a first bearing unit according to an embodiment of the utility model;

[0097] Fig. 9 is a schematic diagram of a planetary transmission structure according to an embodiment of the utility model;

[0098] Fig.10 is a cross-sectional view of a planetary transmission structure according to an embodiment of the utility model;

[0099] Fig.11 a is a schematic diagram of a planet carrier unit according to an embodiment of the utility model;

[0100] Fig.11 b is a cross-sectional view of a planet carrier unit according to an embodiment of the utility model;

[0101] Fig.12 is a schematic diagram of a planetary gear unit according to an embodiment of the utility model;

[0102] Fig.13 is a schematic diagram of a reduction motor according to an embodiment of the utility model (I);

[0103] Fig.14 a~ Fig.14 b is a cross-sectional view (I) of a reduction motor according to an embodiment of the utility model;

[0104] Fig.15 is a schematic diagram of a reduction motor according to an embodiment of the utility model (II);

[0105] Fig.16 a~ Fig.16 c is a cross-sectional view (II) of the reduction motor according to an embodiment of the utility model.

[0106] The accompanying drawings are marked as follows: 100, a planetary transmission structure; 110, a double-linked planetary gear transmission unit; 111, a double-linked gear shaft element; 112, a large-end gear element; 113, a small-end gear element; 114, a sleeve element; 115, a first bearing element; 120, a first output transmission unit; 121, a first bracket element; 122, a first transmission element; 130, a second output transmission unit; 131, a second bracket element; 132, a connecting element; 140, a fixed frame unit; 141, a fixed frame element; 142, a second transmission element; 143, a first groove element; 144, a mounting element; 150, a unidirectional motion unit; 151, a first unidirectional motion element; 152, a second unidirectional motion element; 160, a first bearing unit; 161, a second bearing element; 162, a third bearing element; 163, a fourth bearing element; 170, a washer unit; 180, a torque monitoring unit;

[0107] 200, planetary transmission structure; 210, planetary carrier unit; 211, planetary carrier element; 212, second groove element; 220, planetary gear transmission unit; 221, planetary transmission shaft element; 222, planetary gear element; 230, sun gear unit; 240, second bearing unit;

[0108] 300. Transmission shaft structure. DETAILED DESCRIPTION

[0109] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0110] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0111] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments, but they are not intended to limit the present invention.

[0112] Example 1

[0113] This embodiment relates to the planetary transmission structure of the utility model.

[0114] An illustrative embodiment of the present utility model is as follows: Figure 1 , Figure 2 a~ Figure 2 As shown in FIG. 1 , a planetary transmission structure 100 includes a plurality of double planetary gear transmission units 110, a first output transmission unit 120, and a second output transmission unit 130. The plurality of double planetary gear transmission units 110 are fixedly arranged in a surrounding manner inside the reduction motor, and the large diameter ends of the plurality of double planetary gear transmission units 110 are drivingly connected to the sun gear unit of the planetary transmission structure, and are used to rotate under the action of the sun gear unit of the planetary transmission structure; the second ends of the first output transmission unit 120 are drivingly connected to the small diameter ends of the plurality of double planetary gear transmission units 110, and the first output transmission unit 120 is coaxially arranged with the transmission shaft structure, and is used to rotate under the action of the plurality of double planetary gear transmission units 110; the first end of the second output transmission unit 130 is drivingly connected to the second end of the first output transmission unit 120, and the first end of the second output transmission unit 130 is drivingly connected to the flywheel structure, and the second output transmission unit 130 is coaxially arranged with the transmission shaft structure, and is used to drive the flywheel structure to rotate under the action of the first output transmission unit 120.

[0115] In the present invention, the first end and the second end are two ends of the planetary transmission structure 100 in the axial direction, that is, two ends in the length direction.

[0116] In the present invention, the inner edge surface of the second end of the first output transmission unit 120 is drivingly connected (engaged) with the small-diameter ends of the plurality of double-coupled planetary gear transmission units 110 .

[0117] In the present invention, preferably, the number of the double planetary gear transmission units 110 is at least three. Generally, the number of the double planetary gear transmission units 110 is adaptively selected according to the volume and specifications of the reduction motor.

[0118] The working principle of the utility model is as follows:

[0119] A plurality of double planetary gear transmission units 110 are arranged around the transmission shaft structure, and each rotates on its own under the action of the sun gear unit of the previous planetary gear transmission structure, that is, the plurality of double planetary gear transmission units 110 do not "revolve" around the transmission shaft structure; under the action of the self-rotation of the plurality of double planetary gear transmission units 110, the first output transmission unit 120 rotates on its own around the transmission shaft structure; under the action of the self-rotation of the first output transmission unit 120, the second output transmission unit 130 rotates on its own around the transmission shaft structure.

[0120] Since the plurality of double planetary gear transmission units 110 do not revolve, a space is left between two adjacent double planetary gear transmission units 110 to facilitate the arrangement of cables of other electrical components so that the cables do not rotate with the rotation of the transmission structure, thereby reducing faults.

[0121] like Figure 3 a~ Figure 3 As shown in FIG. 1 , the double-linked planetary gear transmission unit 110 includes a double-linked gear shaft element 111, a large end gear element 112 and a small end gear element 113. The double-linked gear shaft element 111 is fixedly arranged inside the reduction motor; the large end gear element 112 is rotatably arranged at the second end of the double-linked gear shaft element 111, and is drivingly connected to the sun gear unit of the planetary transmission structure, and is used for self-rotation under the action of the sun gear unit of the planetary transmission structure; the small end gear element 113 is rotatably arranged at the first end of the double-linked gear shaft element 111, and is fixedly connected to the large end gear element 112, and is drivingly connected to the first output transmission unit 120, and is used for self-rotation under the action of the large end gear element 112 to drive the first output transmission unit 120 to rotate.

[0122] Ways in which the dual gear shaft element 111 is fixed to the reduction motor include but are not limited to bolt connection, screw connection, etc.

[0123] In some of the embodiments, the duplex gear shaft element 111 is a duplex gear shaft.

[0124] The large end gear element 112 is coaxially arranged with the double gear shaft element 111 and rotates around the double gear shaft element 111 as an axis.

[0125] The size of the large end gear element 112 matches the size of the duplex gear shaft element 111. Generally, the inner diameter of the large end gear element 112 is not less than the outer diameter of the duplex gear shaft element 111, and the axial dimension (such as thickness and height) of the large end gear element 112 is less than the axial dimension (such as length) of the duplex gear shaft element 111.

[0126] In some embodiments, the big end gear element 112 is a big end gear.

[0127] In some embodiments, the small end gear element 113 and the large end gear element 112 are integrally formed.

[0128] The small end gear element 113 is coaxially arranged with the duplex gear shaft element 111 and rotates around the duplex gear shaft element 111 as an axis.

[0129] The size of the small end gear element 113 matches the size of the duplex gear shaft element 111. Generally, the inner diameter of the small end gear element 113 is not less than the outer diameter of the duplex gear shaft element 111, and the axial dimension (such as thickness, height) of the small end gear element 113 is less than the axial dimension (such as length) of the duplex gear shaft element 111.

[0130] Generally, the axial dimension of the duplex gear shaft element 111 is greater than or equal to the axial dimension of the large-end gear element 112 + the axial dimension of the small-end gear element 113 .

[0131] In some of the embodiments, the pinion gear element 113 is a pinion gear.

[0132] Furthermore, the double planetary gear transmission unit 110 further includes a sleeve element 114. The sleeve element 114 is coaxially arranged with the double gear shaft element 111 and the small end gear element 113, and is connected with the double gear shaft element 111 and the small end gear element 113, respectively.

[0133] The shaft sleeve element 114 is sleeved on the first end of the duplex gear shaft element 111 and is located inside the small end gear element 113 .

[0134] The sleeve element 114 is detachably connected to the duplex gear shaft element 111 , including but not limited to screw connection.

[0135] The size of the sleeve element 114 matches the size of the duplex gear shaft element 111. Generally, the inner diameter of the sleeve element 114 is equal to the outer diameter of the first end of the duplex gear shaft element 111, and the axial dimension of the sleeve element 114 is smaller than the axial dimension of the duplex gear shaft element 111.

[0136] The size of the sleeve element 114 matches the size of the small end gear element 113. Generally, the outer diameter of the sleeve element 114 is equal to the inner diameter of the first end of the small end gear element 113, and the axial dimension of the sleeve element 114 is smaller than the axial dimension of the small end gear element 113.

[0137] In some of the embodiments, the sleeve element 114 is a sleeve.

[0138] Furthermore, the double planetary gear transmission unit 110 further includes a first bearing element 115 , wherein the first bearing element 115 is disposed between the double gear shaft element 111 and the large end gear element 112 .

[0139] The first bearing element 115 is sleeved on the second end of the duplex gear shaft element 111 and is located inside the large end gear element 112 .

[0140] The size of the first bearing element 115 matches the size of the duplex gear shaft element 111. Generally, the inner diameter of the first bearing element 115 is equal to the outer diameter of the second end of the duplex gear shaft element 111, and the axial dimension of the first bearing element 115 is smaller than the axial dimension of the duplex gear shaft element 111.

[0141] The size of the first bearing element 115 matches the size of the large end gear element 112. Generally, the outer diameter of the first bearing element 115 is equal to the inner diameter of the large end gear element 112, and the axial dimension of the first bearing element 115 is smaller than the axial dimension of the large end gear element 112.

[0142] In some of these embodiments, the first bearing element 115 includes, but is not limited to, a deep groove bearing.

[0143] like Figure 4 a~ Figure 4 As shown in FIG. 1 , the first output transmission unit 120 includes a first support element 121 and a first transmission element 122. The first end of the first support element 121 is in transmission connection with the second end of the second output transmission unit 130, and the first support element 121 is coaxially arranged with the transmission shaft structure, and is used to drive the second output transmission unit 130 to rotate; the first transmission element 122 is arranged at the second end of the first support element 121, and is in transmission connection with the large diameter end of a plurality of double-coupled planetary gear transmission units 110, and is used to drive the first support element 121 to rotate under the action of the plurality of double-coupled planetary gear transmission units 110.

[0144] Specifically, the first transmission element 122 is respectively connected to the plurality of small-end gear elements 113 for driving the first support element 121 to rotate under the action of the plurality of small-end gear elements 113 .

[0145] Generally, the first support element 121 and the first transmission element 122 are integrally formed.

[0146] The first support element 121 is a hollow axisymmetric structure.

[0147] In some of the embodiments, the cross-section of the first bracket element 121 is convex.

[0148] In some embodiments, the first support element 121 includes a first annular support and a second annular support, wherein the first annular support has a first transmission element 122 disposed on its inner edge surface; the second annular support is coaxially disposed at the first end of the first annular support, and a second output transmission unit 130 is disposed inside the second annular support.

[0149] Generally, the first annular bracket and the second annular bracket are integrally formed.

[0150] In some of the embodiments, a radial dimension of an inner edge surface of the second end of the first annular support is greater than a radial dimension of an inner edge surface of the first end of the first annular support.

[0151] The size of the second annular support matches the size of the first annular support. Generally, the radial size (such as the outer diameter) of the outer edge surface of the second annular support is smaller than the radial size (such as the outer diameter) of the outer edge surface of the first annular support, and the radial size (such as the inner diameter) of the inner edge surface of the second annular support is not larger than the radial size (such as the inner diameter) of the inner edge surface of the first annular support.

[0152] In some of the embodiments, a radial dimension of an inner edge surface of the second end of the second annular support is greater than a radial dimension of an inner edge surface of the first end of the second annular support.

[0153] In some of the embodiments, a radial dimension of an inner edge surface of the second end of the second annular support is equal to a radial dimension of an inner edge surface of the first end of the first annular support.

[0154] The size of the first transmission element 122 matches the size of the first support element 121. Generally, the axial size of the first transmission element 122 is not greater than the axial size of the first annular support.

[0155] In some embodiments, the first transmission element 122 is a ring gear.

[0156] like Figure 5 a~ Figure 5As shown in FIG. 1 , the second output transmission unit 130 includes a second support element 131 and a connecting element 132. The second end of the second support element 131 is transmission-connected to the first end of the first output transmission unit 120, and the second support element 131 is coaxially arranged with the transmission shaft structure, and is used to rotate under the action of the first output transmission unit 120; the connecting element 132 is arranged at the first end of the second support element 131, and is transmission-connected to the flywheel structure, and is used to drive the flywheel structure to rotate under the action of the second support element 131.

[0157] Specifically, the second support element 131 is coaxially arranged with the first support element 121 , the second end of the second support element 131 is located inside the first end of the first support element 121 , and the second end of the second support element 131 is drivingly connected with the first end of the first support element 121 .

[0158] Generally, the second bracket element 131 and the connecting element 132 are integrally formed.

[0159] The second support element 131 is a hollow axisymmetric structure.

[0160] In some of the embodiments, the cross-section of the second bracket element 131 is convex.

[0161] In some embodiments, the second support element 131 includes a third annular support, a fourth annular support, a fifth annular support and a sixth annular support. The third annular support is coaxially arranged inside the first support element 121; the fourth annular support is coaxially arranged at the first end of the third annular support and is located outside the first support element 121; the fifth annular support is coaxially arranged at the first end of the fourth annular support; the sixth annular support is coaxially arranged at the first end of the fifth annular support, and the outer edge surface of the sixth annular support is provided with a connecting element 132.

[0162] Generally, the third annular bracket, the fourth annular bracket, the fifth annular bracket and the sixth annular bracket are integrally formed.

[0163] In some of the embodiments, a radial dimension (such as an inner diameter) of an inner edge surface of the second end of the third annular support is greater than a radial dimension (such as an inner diameter) of an inner edge surface of the first end of the third annular support.

[0164] The size of the third annular support matches the size of the first support element 121. Generally, the radial size (such as the outer diameter) of the outer edge surface of the third annular support is not greater than the radial size (such as the inner diameter) of the inner edge surface of the second annular support, and the axial size of the third annular support is not less than the axial size of the second annular support.

[0165] The size of the fourth annular bracket matches the size of the third annular bracket. Generally, the radial size (such as the outer diameter) of the outer edge surface of the fourth annular bracket is smaller than the radial size (such as the outer diameter) of the outer edge surface of the third annular bracket, and the radial size (such as the inner diameter) of the inner edge surface of the fourth annular bracket is not larger than the radial size (such as the inner diameter) of the inner edge surface of the third annular bracket.

[0166] In some of the embodiments, a radial dimension (eg, outer diameter) of an outer edge surface of the second end of the fourth annular support is greater than a radial dimension (eg, outer diameter) of an outer edge surface of the first end of the fourth annular support.

[0167] The size of the fifth annular support matches the size of the fourth annular support. Generally, the radial size (such as the outer diameter) of the outer edge surface of the fifth annular support is not greater than the radial size (such as the outer diameter) of the outer edge surface of the fourth annular support, and the radial size (such as the inner diameter) of the inner edge surface of the fifth annular support is smaller than the radial size (such as the inner diameter) of the inner edge surface of the fourth annular support.

[0168] The size of the sixth annular bracket matches the size of the fifth annular bracket. Generally, the radial size (such as the outer diameter) of the outer edge surface of the sixth annular bracket is smaller than the radial size (such as the outer diameter) of the outer edge surface of the fifth annular bracket, and the radial size (such as the inner diameter) of the inner edge surface of the sixth annular bracket is not larger than the radial size of the inner edge surface of the fifth annular bracket.

[0169] In some of the embodiments, a radial dimension (such as an inner diameter) of an inner edge surface of the second end of the sixth annular support is greater than a radial dimension (such as an inner diameter) of an inner edge surface of the first end of the sixth annular support.

[0170] The size of the connecting element 132 matches the size of the second bracket element 131. Generally, the radial size (such as the outer diameter) of the outer edge surface of the first transmission element 122 is smaller than the radial size (such as the outer diameter) of the outer edge surface of the fifth annular bracket, and the axial size of the first transmission element 122 is not greater than the axial size of the sixth annular bracket.

[0171] In some embodiments, the connecting element 132 is a thread.

[0172] Furthermore, the quasi-planetary transmission structure 100 further includes a fixed frame unit 140. The fixed frame unit 140 is fixedly arranged inside the reduction motor, and a plurality of double-coupled planetary gear transmission units 110 are fixedly arranged on the fixed frame unit 140. The second end of the fixed frame unit 140 is transmission-connected with the planetary gear transmission unit of the planetary transmission structure, so as to make the planetary transmission structure rotate.

[0173] like Figure 6 a~ Figure 6As shown in FIG. 1 , the fixing frame unit 140 includes a fixing frame element 141, a second transmission element 142 and a plurality of first groove elements 143. The fixing frame element 141 is arranged inside the reduction motor; the second transmission element 142 is arranged at the second end of the fixing frame element 141 and is transmission-connected with the planetary gear transmission unit of the planetary transmission structure, so as to make the planetary transmission structure rotate; and the plurality of first groove elements 143 are arranged around and distributed at the first end of the fixing frame element 141, so as to accommodate a plurality of double-connected planetary gear transmission units 110.

[0174] Specifically, the plurality of first groove elements 143 accommodate a plurality of duplex gear shaft elements 111 , a plurality of large end gear elements 112 , and a plurality of small end gear elements 113 .

[0175] Generally, the fixing frame element 141 and the second transmission element 142 are integrally formed.

[0176] The fixing frame element 141 is a hollow axisymmetric structure.

[0177] In some of the embodiments, the cross-section of the fixing frame element 141 is convex.

[0178] In some embodiments, the fixing frame element 141 includes a seventh annular bracket and an eighth annular bracket, wherein the inner edge surface of the seventh annular bracket is provided with a second transmission element 142; the eighth annular bracket is coaxially arranged at the first end of the seventh annular bracket and is provided with a plurality of first groove elements 143.

[0179] Generally, the seventh annular bracket and the eighth annular bracket are integrally formed.

[0180] The size of the eighth annular bracket matches the size of the seventh annular bracket. Generally, the radial size (such as the outer diameter) of the outer edge surface of the eighth annular bracket is larger than the radial size (such as the outer diameter) of the outer edge surface of the seventh annular bracket, and the radial size (such as the inner diameter) of the inner edge surface of the eighth annular bracket is not smaller than the radial size (such as the inner diameter) of the inner edge surface of the seventh annular bracket.

[0181] The size of the eighth annular support matches the size of the first support element 121. Generally, the radial size (such as the inner diameter) of the inner edge surface of the eighth annular support is not greater than the radial size (such as the outer diameter) of the outer edge surface of the first annular support.

[0182] In some of the embodiments, the radial dimension of the inner edge surface of the first end of the eighth annular support is equal to the radial dimension (such as the outer diameter) of the outer edge surface of the first annular support.

[0183] The size of the second transmission element 142 matches the size of the fixing frame element 141. Generally, the axial size of the second transmission element 142 is not greater than the axial size of the seventh annular support.

[0184] In some embodiments, the second transmission element 142 is a ring gear.

[0185] The first groove element 143 is disposed through the eighth annular bracket.

[0186] The number of the first groove elements 143 matches the number of the double planetary gear transmission units 110. Generally, the number of the first groove elements 143 is equal to the number of the double planetary gear transmission units 110.

[0187] Generally, the number of the first groove elements 143 is at least 3. Preferably, the number of the first groove elements 143 is an odd number.

[0188] In some embodiments, the first groove element 143 includes a first groove and a first rotation hole. The first groove is arranged to penetrate the eighth annular bracket, and a large end gear element 112 is arranged inside the first groove; the first rotation hole is arranged in the first groove, communicated with the first groove, and connected with the double gear shaft element 111.

[0189] The size of the first groove matches the size of the eighth annular groove. Generally, the axial size of the first groove is not greater than the axial size of the eighth annular support.

[0190] The size of the first rotating hole matches the size of the first groove. Generally, the radial size (such as inner diameter) of the first rotating hole is smaller than the radial size (such as width, length) of the first groove.

[0191] The size of the first rotating hole matches the size of the dual gear shaft element 111. Generally, the radial size (such as the inner diameter) of the first rotating hole is equal to the radial size (such as the outer diameter) of the second end of the dual gear shaft element 111.

[0192] Furthermore, the fixing frame unit 140 further includes a plurality of mounting elements 144 and a plurality of fixing elements, wherein the plurality of mounting elements 144 are distributed on the fixing frame element 141 ; and the plurality of fixing elements are respectively connected to the corresponding mounting elements 144 and the outer shell structure to fix the fixing frame element 141 .

[0193] In some of the embodiments, a plurality of mounting elements 144 are distributed on the eighth annular bracket.

[0194] Generally, there are at least three mounting elements 144. Preferably, the number of mounting elements 144 is an odd number.

[0195] In some of the embodiments, the mounting elements 144 are mounting holes.

[0196] The number of fixing elements matches the number of mounting elements 144. Generally, the number of fixing elements is equal to the number of mounting elements 144.

[0197] In some of the embodiments, the fixing elements include but are not limited to countersunk screws and the like.

[0198] Furthermore, the quasi-planetary transmission structure 100 further includes a unidirectional motion unit 150. The unidirectional motion unit 150 is disposed inside and / or outside the second output transmission unit 130, and is used to enable the second output transmission unit 130 to move in one direction.

[0199] like Figure 7 As shown, the unidirectional motion unit 150 includes a first unidirectional motion element 151. The first unidirectional motion element 151 is disposed between the first output transmission unit 120 and the second output transmission unit 130, and is used to make the second output transmission unit 130 move in one direction.

[0200] Specifically, the first unidirectional motion element 151 is disposed between the first support element 121 and the second support element 131 , and is used to enable the second support element 131 to move in one direction.

[0201] More specifically, the first unidirectional motion element 151 is disposed between the second annular bracket and the third annular bracket.

[0202] The size of the first unidirectional motion element 151 matches the size of the first support element 121. Generally, the radial size (such as the outer diameter) of the outer edge surface of the first unidirectional motion element 151 is equal to the radial size (such as the inner diameter) of the inner edge surface of the second annular support, and the axial size of the first unidirectional motion element 151 is smaller than the axial size of the second annular support.

[0203] The size of the first unidirectional motion element 151 matches the size of the second support element 131. Generally, the radial size (such as the inner diameter) of the inner edge surface of the first unidirectional motion element 151 is equal to the radial size (such as the outer diameter) of the outer edge surface of the third annular support, and the axial size of the first unidirectional motion element 151 is smaller than the axial size of the second annular support.

[0204] In some of the embodiments, the first unidirectional moving element 151 includes but is not limited to an overrunning clutch.

[0205] Furthermore, the unidirectional motion unit 150 includes a second unidirectional motion element 152. The second unidirectional motion element 152 is disposed between the second output transmission unit 130 and the transmission shaft structure, and is used to enable the second output transmission unit 130 to move in one direction.

[0206] Specifically, the second unidirectional motion element 152 is disposed between the second support element 131 and the transmission shaft structure, and is used to enable the second support element 131 to move in one direction.

[0207] More specifically, the second unidirectional motion element 152 is disposed between the fourth annular bracket and the transmission shaft structure.

[0208] The size of the second unidirectional motion element 152 matches the size of the second support element 131. Generally, the radial size (such as the outer diameter) of the outer edge surface of the second unidirectional motion element 152 is equal to the radial size (such as the inner diameter) of the inner edge surface of the fourth annular support, and the axial size of the second unidirectional motion element 152 is not less than the axial size of the fourth annular support.

[0209] In some of the embodiments, the second one-way moving element 152 includes but is not limited to an overrunning clutch.

[0210] Furthermore, the quasi-planetary transmission structure 100 further includes a first bearing unit 160. The first bearing unit 160 is connected to the first output transmission unit 120 and the second output transmission unit 130 respectively.

[0211] like Figure 8 As shown, the first bearing unit 160 includes a second bearing element 161. The second bearing element 161 is disposed between the first output transmission unit 120 and the second output transmission unit 130, and is connected to the first output transmission unit 120 and the second output transmission unit 130 respectively.

[0212] Specifically, the second bearing element 161 is disposed between the first bracket element 121 and the second bracket element 131 , and is connected to the first bracket element 121 and the second bracket element 131 respectively.

[0213] More specifically, the second bearing element 161 is disposed between the second annular bracket and the third annular bracket, and is connected to the second annular bracket and the third annular bracket respectively.

[0214] The size of the second bearing element 161 matches the size of the first bracket element 121. Generally, the radial size (such as the outer diameter) of the outer edge surface of the second bearing element 161 is equal to the radial size (such as the inner diameter) of the inner edge surface of the second annular bracket, and the axial size of the second bearing element 161 is smaller than the axial size of the second annular bracket.

[0215] The size of the second bearing element 161 matches the size of the second bracket element 131. Generally, the radial size (such as the inner diameter) of the inner edge surface of the second bearing element 161 is equal to the radial size (such as the outer diameter) of the outer edge surface of the third annular bracket, and the axial size of the second bearing element 161 is smaller than the axial size of the third annular bracket.

[0216] In some of these embodiments, the second bearing element 161 includes, but is not limited to, a deep groove bearing.

[0217] Furthermore, the first bearing unit 160 includes a third bearing element 162. The third bearing element 162 is disposed outside the second output transmission unit 130 and is connected to the second output transmission unit 130 and the housing structure respectively.

[0218] Specifically, the third bearing element 162 is disposed outside the second bracket element 131 and is connected to the second bracket element 131 and the housing structure respectively.

[0219] More specifically, the third bearing element 162 is disposed outside the fourth annular bracket and is connected to the fourth annular bracket and the outer shell structure respectively.

[0220] The size of the third bearing element 162 matches the size of the second bracket element 131. Generally, the radial size (such as the inner diameter) of the inner edge surface of the third bearing element 162 is equal to the radial size (such as the outer diameter) of the outer edge surface of the fourth annular bracket, and the axial size of the third bearing element 162 is not greater than the axial size of the fourth annular bracket.

[0221] In some of these embodiments, the third bearing element 162 includes, but is not limited to, a deep groove bearing.

[0222] Furthermore, the first bearing unit 160 includes a fourth bearing element 163. The fourth bearing element 163 is disposed inside the second output transmission unit 130 and is connected to the second output transmission unit 130 and the transmission shaft structure respectively.

[0223] Specifically, the fourth bearing element 163 is disposed inside the second bracket element 131 and is respectively connected to the second bracket element 131 and the transmission shaft structure.

[0224] More specifically, the fourth bearing element 163 is disposed inside the fifth annular bracket and is connected to the fifth annular bracket and the transmission shaft structure respectively.

[0225] In some of the embodiments, the fourth bearing element 163 is also disposed inside the sixth annular bracket and connected to the sixth annular bracket.

[0226] The size of the fourth bearing element 163 matches the size of the second bracket element 131. Generally, the radial size (such as the outer diameter) of the outer edge surface of the fourth bearing element 163 is equal to the radial size (such as the inner diameter) of the inner edge surface of the fifth annular bracket, and the axial size of the fourth bearing element 163 is not less than the axial size of the fifth annular bracket.

[0227] In some of the embodiments, the radial dimension (such as outer diameter) of the outer edge surface of the fourth bearing element 163 is equal to the radial dimension (such as inner diameter) of the inner edge surface of the sixth annular bracket, and the axial dimension of the fourth bearing element 163 is not less than the axial dimension of the sixth annular bracket.

[0228] In some of the embodiments, the axial dimension of the fourth bearing element 163 is less than or equal to the axial dimension of the fifth annular support plus the axial dimension of the sixth annular support.

[0229] In some of these embodiments, the fourth bearing element 163 includes, but is not limited to, a deep groove bearing.

[0230] Furthermore, the quasi-planetary transmission structure 100 further includes a washer unit 170 , wherein the washer unit 170 is disposed between the first output transmission unit 120 and the second output transmission unit 130 .

[0231] Specifically, the gasket unit 170 is disposed between the first bracket element 121 and the second bracket element 131 .

[0232] More specifically, the gasket unit 170 is disposed between the second annular bracket and the third annular bracket.

[0233] In some of the embodiments, the washer unit 170 is disposed between the second bearing element 161 and the first unidirectional motion element 151 .

[0234] In some of the embodiments, the washer unit 170 abuts against the second bearing element 161 and the first unidirectional motion element 151 respectively.

[0235] In some of the embodiments, the washer unit 170 is disposed between the second bearing element 161 and the first transmission element 122 .

[0236] In some embodiments, there are two washer units 170 , wherein one washer unit 170 is disposed at the second end of the second bearing element 161 , and the other washer unit 170 is disposed at the first end of the second bearing element 161 .

[0237] The size of the washer unit 170 matches the size of the first bracket element 121. Generally, the radial size (such as outer diameter) of the outer edge surface of the washer unit 170 is equal to the radial size (such as inner diameter) of the inner edge surface of the second annular bracket, and the axial size of the washer unit 170 is smaller than the axial size of the second annular bracket.

[0238] The size of the washer unit 170 matches the size of the second bracket element 131. Generally, the radial size (such as inner diameter) of the inner edge surface of the washer unit 170 is not less than the radial size (such as outer diameter) of the outer edge surface of the third annular bracket, and the axial size of the washer unit 170 is less than the axial size of the third annular bracket.

[0239] In some of the embodiments, the washer unit 170 includes but is not limited to a wear-resistant washer and a retaining ring.

[0240] Furthermore, the quasi-planetary transmission structure 100 further includes a torque monitoring unit 180. The torque monitoring unit 180 is disposed inside the second output transmission unit 130 and between the second output transmission unit 130 and the transmission shaft structure, and is used to monitor the torque.

[0241] Specifically, the torque monitoring unit 180 is coaxially disposed inside the second support element 131 .

[0242] More specifically, the torque monitoring unit 180 is coaxially disposed inside the third annular support.

[0243] In some embodiments, the second unidirectional motion element 152 is disposed between the second support element 131 and the torque monitoring unit 180 .

[0244] In some of the embodiments, the torque monitoring unit 180 includes, but is not limited to, a torque sensor.

[0245] The method of using the utility model is as follows:

[0246] Under the action of the sun gear unit of the previous planetary transmission structure, a number of large-end gear elements 112 rotate around the double-gear shaft element 111, thereby driving a number of small-end gear elements 113 to rotate around the double-gear shaft element 111; under the action of a number of small-end gear elements 113 and the first transmission element 122, the first bracket element 121 rotates around the transmission shaft structure, and drives the second bracket element 131 to rotate around the transmission shaft structure; under the action of the connecting element 132, the flywheel structure rotates.

[0247] The technical effects of the utility model are as follows: by utilizing a plurality of double-coupled planetary gear transmission units to rotate on their own and not to revolve around a transmission shaft structure, it is convenient to set a sensor element inside the reduction motor, thereby reducing the failure of the sensor element due to cable problems and improving the efficiency of information transmission; by utilizing a plurality of double-coupled planetary gear transmission units, a first output transmission unit and a second output transmission unit as the final reduction structure of the reduction mechanism, the transmission ratio can be improved and the volume of the reduction motor can be reduced; by utilizing the cooperation of the first output transmission unit and the second output transmission unit, the output shaft of the motor can be made to be collinear with the output shaft of the reduction mechanism, thereby reducing the volume of the reduction motor.

[0248] Example 2

[0249] This embodiment relates to the planetary transmission structure of the utility model.

[0250] An illustrative embodiment of the present utility model is as follows: Figure 9~Figure 10As shown, a planetary transmission structure 200 is transmission-connected with the quasi-planetary transmission structure 100 as described in Example 1, and includes a planetary carrier unit 210, a planetary gear transmission unit 220, and a sun gear unit 230. The planetary carrier unit 210 is coaxially arranged with the quasi-planetary transmission structure 100; the planetary gear transmission unit 220 is arranged at the second end of the planetary carrier unit 210, and is transmission-connected with the sun gear unit of the previous planetary transmission structure, and is used to drive the planetary carrier unit 210 to rotate under the action of the sun gear unit of the previous planetary transmission structure; the sun gear unit 230 is arranged at the first end of the planetary carrier unit 210, and is transmission-connected with the large-diameter end of the double-coupled planetary gear transmission unit 110, and is used to drive the double-coupled planetary gear transmission unit 110 to rotate under the action of the planetary carrier unit 210.

[0251] Furthermore, the planetary gear transmission unit 220 is also in transmission connection with the fixed frame unit 140 of the planetary transmission structure 100, and is used to drive the planetary frame unit 210 and the sun gear unit 230 to rotate under the joint action of the sun gear unit and the fixed frame unit 140 of the previous planetary transmission structure.

[0252] Generally, the sun gear unit 230 and the planet carrier unit 210 are formed in one piece.

[0253] like Fig.11 As shown in Figs. a-11b, the planet carrier unit 210 includes a planet carrier element 211 and a plurality of second groove elements 212. The planet carrier element 211 is coaxially arranged with the quasi-planetary transmission structure 100, a sun gear unit 230 is arranged at the first end of the planet carrier element 211, and is connected to the planetary gear transmission unit 220, and is used to drive the sun gear unit 230 to rotate under the action of the planetary gear transmission unit 220; and a plurality of second groove elements 212 are arranged around the planet carrier element 211, and are respectively connected to the planetary gear transmission unit 220.

[0254] The planet carrier element 211 is a hollow axisymmetric structure.

[0255] In some of the embodiments, the cross-section of the planet carrier element 211 is convex.

[0256] In some embodiments, the planet carrier element 211 includes a ninth annular bracket, a tenth annular bracket and an eleventh annular bracket. The outer edge surface of the ninth annular bracket is provided with a plurality of second groove elements 212; the tenth annular bracket is coaxially provided at the first end of the ninth annular bracket; the eleventh annular bracket is coaxially provided at the first end of the tenth annular bracket, and the outer edge surface of the eleventh annular bracket is provided with a sun gear unit 230.

[0257] Generally, the ninth annular bracket, the tenth annular bracket and the eleventh annular bracket are integrally formed.

[0258] The size of the tenth annular bracket matches the size of the ninth annular bracket. Generally, the radial size (such as the outer diameter) of the outer edge surface of the tenth annular bracket is smaller than the radial size (such as the outer diameter) of the outer edge surface of the ninth annular bracket, and the radial size (such as the inner diameter) of the inner edge surface of the tenth annular bracket is not larger than the radial size (such as the inner diameter) of the inner edge surface of the ninth annular bracket.

[0259] The size of the eleventh annular bracket matches the size of the tenth annular bracket. Generally, the radial size (such as the outer diameter) of the outer edge surface of the eleventh annular bracket is smaller than the radial size (such as the outer diameter) of the outer edge surface of the tenth annular bracket, and the radial size (such as the inner diameter) of the inner edge surface of the eleventh annular bracket is not greater than the radial size (such as the inner diameter) of the inner edge surface of the tenth annular bracket.

[0260] The second groove element 212 is arranged to penetrate the outside and the inside of the ninth annular bracket so as to allow the planetary gear transmission unit 220 to be transmission-connected with the sun gear unit and the fixing frame unit 140 of the previous planetary transmission structure respectively.

[0261] Generally, the number of the second groove elements 212 is at least 3. Preferably, the number of the second groove elements 212 is an odd number.

[0262] In some embodiments, the second groove element 212 includes a second groove, a second rotation hole and a third rotation hole. The second groove is arranged to penetrate the outside and inside of the ninth annular bracket, and the inside of the second groove is provided with a planetary gear transmission unit 220; the second rotation hole is arranged at the second end of the ninth annular bracket, and is communicated with the second groove, and is connected to the planetary gear transmission unit 220; the third rotation hole is arranged at the first end of the ninth annular bracket, and is communicated with the second groove, and is connected to the planetary gear transmission unit 220.

[0263] The size of the second groove matches the size of the ninth annular support. Generally, the axial size of the second groove is smaller than the axial size of the ninth annular support.

[0264] The size of the second rotating hole matches the size of the second groove. Generally, the radial size (such as inner diameter) of the second rotating hole is smaller than the radial size (such as length, width) of the second groove.

[0265] The size of the third rotating hole matches the size of the second groove. Generally, the radial size (such as inner diameter) of the third rotating hole is smaller than the radial size (such as length, width) of the second groove.

[0266] The size of the third rotating hole matches the size of the second rotating hole. Generally, the radial size (such as the inner diameter) of the third rotating hole is equal to the radial size (such as the inner diameter) of the second rotating hole.

[0267] like Fig.12As shown, the planetary gear transmission unit 220 includes a plurality of planetary transmission shaft elements 221 and a plurality of planetary gear elements 222. Among them, the plurality of planetary transmission shaft elements 221 are arranged around the planetary carrier unit 210; the plurality of planetary gear elements 222 are arranged on the corresponding planetary transmission shaft elements 221, and are drivingly connected with the sun gear unit of the previous planetary transmission structure, so as to drive the planetary carrier unit 210 to rotate under the action of the sun gear unit of the previous planetary transmission structure.

[0268] Specifically, a plurality of planetary transmission shaft elements 221 are respectively connected to corresponding second groove elements 212 ; and a plurality of planetary wheel elements 222 are rotatably disposed inside the second groove elements 212 .

[0269] More specifically, the planetary transmission shaft element 221 is connected to the corresponding second rotating hole and the third rotating hole respectively; the planetary wheel element 222 is rotatably disposed in the second groove.

[0270] In some of the embodiments, the planetary transmission shaft element 221 is rotatably connected to the second rotating hole and the third rotating hole respectively.

[0271] In some of the embodiments, the planetary transmission shaft element 221 does not rotate relative to the second rotating hole and the third rotating hole.

[0272] The number of the planetary transmission shaft elements 221 matches the number of the second groove elements 212. Generally, the number of the planetary transmission shaft elements 221 is equal to the number of the second groove elements 212.

[0273] The size of the planetary transmission shaft element 221 matches the size of the second groove element 212. Generally, the radial size (such as the outer diameter) of the planetary transmission shaft element 221 is equal to the radial size (such as the inner diameter) of the second rotating hole (third rotating hole), and the axial size of the planetary transmission shaft element 221 is not greater than the sum of the axial size of the second rotating hole, the axial size of the second groove, and the axial size of the third rotating hole.

[0274] In some of the embodiments, the planetary transmission shaft element 221 is a planetary transmission shaft.

[0275] In some embodiments, the planetary gear element 222 is integrally formed with the planetary transmission shaft element 221 , that is, the planetary transmission shaft element 221 rotates together with the planetary gear element 222 .

[0276] In some embodiments, the planetary wheel element 222 is rotatably connected to the planetary transmission shaft element 221. That is, the planetary transmission shaft element 221 remains stationary, and the planetary wheel element 222 rotates around the planetary transmission shaft element 221.

[0277] The planetary gear element 222 is meshed with the sun gear unit of the previous planetary transmission structure and the second transmission element 142 respectively.

[0278] The number of the planetary gear elements 222 matches the number of the planetary transmission shaft elements 221. Generally, the number of the planetary gear elements 222 is equal to the number of the planetary transmission shaft elements 221.

[0279] The size of the planetary gear element 222 matches the size of the planetary transmission shaft element 221. Generally, the radial size (such as the inner diameter) of the inner edge surface of the planetary gear element 222 is not less than the radial size (such as the outer diameter) of the outer edge surface of the planetary transmission shaft element 221, and the axial size of the planetary gear element 222 is less than the axial size of the planetary transmission shaft element 221.

[0280] In some embodiments, the radial dimension (eg, inner diameter) of the inner edge surface of the planetary gear element 222 is equal to the maximum radial dimension (eg, maximum outer diameter) of the outer edge surface of the planetary transmission shaft element 221 .

[0281] The size of the planetary gear element 222 matches the size of the planetary carrier element 211. Generally, the radial dimension of the outer edge surface of the planetary gear element 222 is greater than the difference (i.e., wall thickness) between the radial dimension of the outer edge surface of the ninth annular support (e.g., outer diameter) and the radial dimension of the inner edge surface of the ninth annular support (e.g., inner diameter).

[0282] The size of the planetary gear element 222 matches the size of the second groove element 212. Generally, the axial dimension of the planetary gear element 222 is not greater than the axial dimension of the second groove.

[0283] The size of the planetary gear element 222 matches the size of the second transmission element 142. Generally, the axial size of the planetary gear element 222 is not greater than the axial size of the second transmission element 142.

[0284] In some of the embodiments, the planetary gear element 222 is a planetary gear.

[0285] The size of the sun gear unit 230 matches the size of the planet carrier element 211. Generally, the radial size (such as the outer diameter) of the outer edge surface of the sun gear unit 230 is smaller than the radial size (such as the outer diameter) of the outer edge surface of the tenth annular support, the radial size (such as the outer diameter) of the outer edge surface of the sun gear unit 230 is larger than the radial size (such as the outer diameter) of the outer edge surface of the eleventh annular support, the radial size (such as the inner diameter) of the inner edge surface of the sun gear unit 230 is equal to the radial size (such as the inner diameter) of the inner edge surface of the eleventh annular support, and the axial size of the sun gear unit 230 is not larger than the axial size of the eleventh annular support.

[0286] Furthermore, the planetary transmission structure 200 further includes a second bearing unit 240. The second bearing unit 240 is coaxially arranged with the planetary carrier unit 210, and is respectively connected with the planetary carrier unit 210 and the transmission shaft structure.

[0287] Specifically, the second bearing unit 240 is disposed inside the planet carrier element 211 and connected to the planet carrier element 211 .

[0288] More specifically, the second bearing unit 240 is disposed inside the tenth annular bracket.

[0289] The size of the second bearing unit 240 matches the size of the planet carrier element 211. Generally, the radial size (such as the outer diameter) of the outer edge surface of the second bearing unit 240 is equal to the radial size (such as the inner diameter) of the inner edge surface of the tenth annular support, and the axial size of the second bearing unit 240 is not greater than the axial size of the tenth annular support.

[0290] In some of the embodiments, the second bearing unit 240 includes but is not limited to a deep groove bearing.

[0291] The method of using this embodiment is as follows:

[0292] When the sun gear unit of the previous planetary transmission structure rotates, since the second transmission element 142 of the fixed frame unit 140 of the planetary transmission structure 100 remains stationary, a number of planetary gear elements 222 rotate, thereby driving the planetary frame element 211 and the sun gear unit 230 to rotate, that is, the planetary transmission structure 200 rotates; when the planetary transmission structure 200 rotates, it drives a number of large-end gear elements 112 to rotate around the double gear shaft element 111, and then drives a number of small-end gear elements 113 to rotate around the double gear shaft element 111.

[0293] The technical effects of this embodiment are basically the same as those of Embodiment 1 and will not be described in detail here.

[0294] Example 3

[0295] This embodiment relates to the reduction motor of the utility model.

[0296] An illustrative embodiment of the present utility model. Fig.13 , Fig.14 a~ Fig.14 As shown in FIG. 2 b, a reduction motor comprises the planetary transmission structure 100 and the transmission shaft structure 300 as described in Example 1. The transmission shaft structure 300 is coaxially arranged with the planetary transmission structure 100.

[0297] Specifically, the transmission shaft structure 300 is transmission-connected to the torque monitoring unit 180 .

[0298] Both ends of the transmission shaft structure 300 are respectively connected to the pedals of the power-assisted bicycle.

[0299] In the utility model, the transmission shaft structure serves as both the output shaft of the reduction motor and the output shaft of the reduction structure.

[0300] The working principle of the present invention is substantially the same as that of the first embodiment, and will not be described in detail here. The technical effect of the present invention is substantially the same as that of the first embodiment, and will not be described in detail here.

[0301] Example 4

[0302] This embodiment relates to the reduction motor of the utility model.

[0303] An illustrative embodiment of the present utility model. Fig.15 , Fig.16 a~ Fig.16 As shown in FIG. 3 , a reduction motor comprises the quasi-planetary transmission structure 100 as described in Example 1 and the planetary transmission structure 200 as described in Example 2. The planetary transmission structure 200 is in transmission connection with the quasi-planetary transmission structure 100.

[0304] Furthermore, the reduction motor further includes a transmission shaft structure 300. The transmission shaft structure 300 is coaxially arranged with the quasi-planetary transmission structure 100 and the planetary transmission structure 200 respectively.

[0305] Specifically, the transmission shaft structure 300 is transmission-connected to the torque monitoring unit 180 .

[0306] Both ends of the transmission shaft structure 300 are respectively connected to the pedals of the power-assisted bicycle.

[0307] In the utility model, the transmission shaft structure serves as both the output shaft of the reduction motor and the output shaft of the reduction structure.

[0308] The working principle of the present invention is substantially the same as that of the second embodiment, and will not be described in detail here. The technical effect of the present embodiment is substantially the same as that of the second embodiment, and will not be described in detail here.

[0309] Example 5

[0310] This embodiment relates to the power-assisted vehicle of the utility model.

[0311] In this embodiment, the power-assisted vehicle includes the following forms:

[0312] 1) comprising the planetary transmission structure 100 as described in Example 1;

[0313] 2) comprising the reduction motor as described in embodiment 3;

[0314] 3) including the quasi-planetary transmission structure 100 as described in Example 1 and the planetary transmission structure 200 as described in Example 2;

[0315] 4) Includes the reduction motor as described in Example 4.

[0316] In the present invention, the power-assisted vehicle includes but is not limited to a power-assisted two-wheeled vehicle, a power-assisted three-wheeled vehicle, etc. For example, a power-assisted bicycle, a power-assisted motorcycle, a power-assisted wheelchair, etc.

[0317] The technical effects of this embodiment are basically the same as those of Embodiments 1 to 4, and will not be described in detail here.

[0318] The above description is only a preferred embodiment of the present invention, and does not limit the implementation mode and protection scope of the present invention. For those skilled in the art, it should be aware that all solutions obtained by equivalent substitutions and obvious changes made using the description and illustrations of the present invention should be included in the protection scope of the present invention.

Claims

1. A planetary transmission structure, characterized in that: include: A plurality of double planetary gear transmission units, wherein the plurality of double planetary gear transmission units are disposed around the interior of the reduction motor, and the large-diameter ends of the plurality of double planetary gear transmission units are respectively connected to the sun gear units of the planetary transmission structure for self-rotation under the action of the sun gear units of the planetary transmission structure; A first output transmission unit, wherein the second ends of the first output transmission unit are respectively transmission-connected to the small-diameter ends of the plurality of double-coupled planetary gear transmission units, and the first output transmission unit is coaxially arranged with the transmission shaft structure for rotating under the action of the plurality of double-coupled planetary gear transmission units; A second output transmission unit, wherein the first end of the second output transmission unit is transmission-connected to the second end of the first output transmission unit, the first end of the second output transmission unit is transmission-connected to the flywheel structure, and the second output transmission unit is coaxially arranged with the transmission shaft structure, and is used for driving the flywheel structure to rotate under the action of the first output transmission unit.

2. The planetary transmission structure according to claim 1, characterized in that: The double planetary gear transmission unit comprises: A double gear shaft element, wherein the double gear shaft element is fixedly arranged inside the reduction motor; A large end gear element, which is rotatably disposed at the second end of the duplex gear shaft element and is drivingly connected to the sun gear unit of the planetary transmission structure, and is used for self-rotation under the action of the sun gear unit of the planetary transmission structure; a small-end gear element, the small-end gear element being rotatably disposed at the first end of the duplex gear shaft element, being fixedly connected to the large-end gear element, and being transmission-connected to the first output transmission unit, and being used for self-rotation under the action of the large-end gear element to drive the first output transmission unit to rotate; and / or The first output transmission unit comprises: a first bracket element, wherein a first end of the first bracket element is drivingly connected to a second end of the second output transmission unit, and the first bracket element is coaxially arranged with the transmission shaft structure for driving the second output transmission unit to rotate; a first transmission element, which is disposed at the second end of the first support element and is drivingly connected to the small-diameter ends of the plurality of double-coupled planetary gear transmission units, and is used for driving the first support element to rotate under the action of the plurality of double-coupled planetary gear transmission units; and / or The second output transmission unit comprises: a second bracket element, wherein the second end of the second bracket element is drivingly connected to the first end of the first output transmission unit, and the second bracket element is coaxially arranged with the transmission shaft structure for rotating under the action of the first output transmission unit; A connecting element is arranged at the first end of the second bracket element and connected to the flywheel structure, and is used to drive the flywheel structure to rotate under the action of the second bracket element.

3. The planetary transmission structure according to claim 2, characterized in that: The double planetary gear transmission unit also includes: A shaft sleeve element, wherein the shaft sleeve element is coaxially arranged with the duplex gear shaft element and the small end gear element, and is connected with the duplex gear shaft element and the small end gear element, respectively; and / or A first bearing element is disposed between the duplex gear shaft element and the large end gear element.

4. The planetary transmission structure according to any one of claims 1 to 3, characterized in that: Also includes: A fixed frame unit, the fixed frame unit is fixedly arranged inside the reduction motor, the fixed frame unit is fixedly provided with a plurality of the double planetary gear transmission units, the second end of the fixed frame unit is drivingly connected to the planetary gear transmission unit of the planetary transmission structure, and is used to make the planetary transmission structure rotate; and / or a unidirectional motion unit, the unidirectional motion unit being arranged inside and / or outside the second output transmission unit and being used for making the second output transmission unit move unidirectionally; and / or A first bearing unit, wherein the first bearing unit is connected to the first output transmission unit and the second output transmission unit respectively; and / or a washer unit, the washer unit being arranged between the first output transmission unit and the second output transmission unit; and / or A torque monitoring unit is arranged inside the second output transmission unit and between the second output transmission unit and the transmission shaft structure, and is used for monitoring torque.

5. The planetary transmission structure according to claim 4, characterized in that: The fixing frame unit comprises: A fixing frame element, wherein the fixing frame element is arranged inside the reduction motor; a second transmission element, which is disposed at the second end of the fixing frame element and is transmission-connected to the planetary gear transmission unit of the planetary transmission structure, and is used to make the planetary transmission structure rotate; a plurality of first groove elements, the plurality of first groove elements are circumferentially distributed and arranged at the first end of the fixing frame element, and are used to respectively accommodate a plurality of the double planetary gear transmission units; and / or The unidirectional motion unit comprises: A first unidirectional motion element, which is disposed between the first output transmission unit and the second output transmission unit and is used to enable the second output transmission unit to move in one direction; and / or The unidirectional motion unit comprises: A second unidirectional motion element, the second unidirectional motion element is disposed between the second output transmission unit and the transmission shaft structure, and is used to enable the second output transmission unit to move in one direction; and / or The first bearing unit comprises: a second bearing element, the second bearing element being disposed between the first output transmission unit and the second output transmission unit and being connected to the first output transmission unit and the second output transmission unit respectively; and / or The first bearing unit comprises: a third bearing element, the third bearing element being arranged outside the second output transmission unit and being connected to the second output transmission unit and the housing structure respectively; and / or The first bearing unit comprises: A fourth bearing element is disposed inside the second output transmission unit and is respectively connected to the second output transmission unit and the transmission shaft structure.

6. A planetary transmission structure, which is in transmission connection with the quasi-planetary transmission structure according to any one of claims 1 to 5, characterized in that: include: A planet carrier unit, wherein the planet carrier unit is coaxially arranged with the quasi-planetary transmission structure; A planetary gear transmission unit, which is arranged at the second end of the planetary carrier unit and is drivingly connected to the sun gear unit of the previous planetary transmission structure, and is used to drive the planetary carrier unit to rotate under the action of the sun gear unit of the previous planetary transmission structure; A sun gear unit is arranged at the first end of the planetary carrier unit and is drivingly connected to the large diameter end of the double planetary gear transmission unit, and is used to drive the double planetary gear transmission unit to rotate under the action of the planetary carrier unit.

7. The planetary transmission structure according to claim 6, characterized in that: The planet carrier unit comprises: A planetary carrier element, wherein the planetary carrier element is coaxially arranged with the planetary transmission structure, the sun gear unit is arranged at a first end of the planetary carrier element, and is connected to the planetary gear transmission unit, and is used to drive the sun gear unit to rotate under the action of the planetary gear transmission unit; A plurality of second groove elements, which are disposed around the planet carrier element and are respectively connected to the planetary gear transmission unit; and / or The planetary gear transmission unit comprises: A plurality of planetary transmission shaft elements, wherein the plurality of planetary transmission shaft elements are disposed around the planet carrier unit; A plurality of planetary gear elements are arranged on the corresponding planetary transmission shaft elements and are drivingly connected to the sun gear unit of the previous planetary transmission structure, so as to drive the planetary carrier unit to rotate under the action of the sun gear unit of the previous planetary transmission structure.

8. A reduction motor, characterized in that: include: A planetary transmission structure as claimed in any one of claims 1 to 6.

9. A reduction motor, characterized in that: include: The planetary transmission structure according to any one of claims 1 to 6; The planetary transmission structure according to any one of claims 7 to 8, wherein the planetary transmission structure is transmission-connected to the quasi-planetary transmission structure.

10. A power-assisted vehicle, characterized in that: include: The planetary transmission structure according to any one of claims 1 to 5; or The planetary transmission structure according to any one of claims 1 to 5; The planetary transmission structure according to any one of claims 6 to 7, wherein the planetary transmission structure is drivingly connected to the quasi-planetary transmission structure; or The reduction motor as claimed in claim 8; or The reduction motor as claimed in claim 9.

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