Speed reducer and electric scissors

Abstract

The utility model discloses a speed reducer which comprises an input end transmission speed reduction assembly and an output end transmission speed reduction assembly which are arranged in a split mode and are in coaxial transmission, and the input end transmission speed reduction assembly comprises an input end gear ring and an input end gear set meshed with the input end gear ring in a transmission mode. The output end transmission speed reduction assembly comprises an output end gear ring and an output end gear set meshed with the output end gear ring in a transmission mode, and the modulus of inner teeth of the output end gear ring in the output end gear ring is larger than that of inner teeth of the input end gear ring in the input end gear ring. And the inner teeth of the input end gear ring and the inner teeth of the output end gear ring are different in number. According to the speed reducer, the modulus of inner teeth of the output end gear ring is larger than that of inner teeth of the input end gear ring, the number of the inner teeth of the input end gear ring and the number of the inner teeth of the output end gear ring are different, the speed reducer can be set to be large in speed ratio according to needs, meanwhile, the output end can bear large torsion, and the application range of the electric scissors is wider.

Description

Technical Field

[0001] The utility model relates to the technical field of electric scissors, in particular to a reducer and electric scissors. Background Art

[0002] The transmission components of electric scissors are all equipped with reducers. However, the reducers for electric scissors currently on the market all adopt an integrated ring gear structure, that is, the input and output ends of the reducer use the same ring gear, and the same module is used in the ring gear.

[0003] Furthermore, due to the limited installation space of the scissors housing, the reducer takes up a large space inside the housing, making it impossible to achieve a high speed ratio transmission within the limited installation space of the electric scissors. At the same time, the output end of the reducer cannot withstand high torque, which limits the application range of electric scissors.

[0004] In order to completely solve the problems that the existing electric scissors reducer cannot achieve high speed ratio transmission and the output end of the reducer cannot withstand large torque, a reducer and electric scissors are specially designed. Utility Model Content

[0005] The purpose of the utility model is to solve the problems that the existing electric scissors reducer cannot achieve high speed ratio transmission and the output end of the reducer cannot withstand large torque. The utility model provides a reducer and electric scissors, which can achieve high speed ratio transmission in the limited installation space of the electric scissors. At the same time, the output end can withstand large torque, making the electric scissors more widely used.

[0006] The technical solution adopted by the utility model to achieve its first invention purpose is: a reducer, including an input end transmission reduction assembly and an output end transmission reduction assembly that are separately arranged and coaxially transmitted, the input end transmission reduction assembly includes an input end ring gear and an input end gear set that is transmission-engaged with the input end ring gear, the output end transmission reduction assembly includes an output end ring gear and an output end gear set that is transmission-engaged with the output end ring gear, the internal tooth module of the output end ring gear inside the output end ring gear is greater than the internal tooth module of the input end ring gear inside the input end ring gear, and the internal teeth of the input end ring gear and the internal teeth of the output end ring gear are respectively provided with different numbers of teeth. The reducer is provided with an input-end transmission reduction assembly and an output-end transmission reduction assembly separately, so that the internal tooth module of the output-end gear ring inside the output-end gear ring is greater than the internal tooth module of the input-end gear ring inside the input-end gear ring, and different numbers of teeth can be set for the internal teeth of the input-end gear ring inside the input-end gear ring and the internal teeth of the output-end gear ring inside the output-end gear ring. Such a structure can set the reducer to a large speed ratio as needed, and the output end can also withstand large torque. A large speed ratio transmission is achieved in the limited space inside the electric scissors housing, meeting the use requirements of the electric scissors in different occasions, making the electric scissors more widely applicable.

[0007] Preferably, the input end gear set is a two-stage reduction transmission, and the three-stage reduction ratio of the input end gear set and the output end gear set is between 80 and 120.

[0008] Preferably, the input end gear set is configured as a two-stage reduction transmission, and the input end gear set includes motor teeth, a first-stage planetary gear carrier and a second-stage planetary gear carrier. A first-stage planetary gear is provided on the input end of the first-stage planetary gear carrier, an input end sun gear is provided on the output end of the first-stage planetary gear carrier, a second-stage planetary gear meshing with the input end sun gear is provided between the first-stage planetary gear carrier and the second-stage planetary gear carrier, and an output end sun gear is provided on the output end of the second-stage planetary gear carrier.

[0009] Preferably, the input end gear set is a single-stage reduction transmission, and the secondary reduction ratio of the input end gear set and the output end gear set is between 26 and 36.

[0010] Preferably, the input end gear set is configured as a first-stage reduction transmission, the input end gear set includes motor teeth and a second-stage planetary gear carrier, a second-stage planetary gear is provided on the input end of the second-stage planetary gear carrier, and an output end sun gear is provided on the output end of the second-stage planetary gear carrier.

[0011] Preferably, the motor transmission gear is an integrated motor transmission gear, wherein a motor shaft transmission connection hole is provided inside the integrated motor transmission gear; or, the motor transmission gear is a segmented motor transmission gear, comprising a gear segment and a cylindrical segment, wherein the motor shaft transmission connection hole is provided inside the cylindrical segment; or, the motor transmission gear is integrally provided with the motor shaft. The motor transmission gear can be provided as an integrated external tooth structure, a segmented structure, or integrally provided with the motor shaft according to design requirements, so as to meet different transmission space transmission setting requirements.

[0012] Preferably, the output end gear set includes an output end planetary gear frame and an output end planetary gear, and the output end planetary gear frame is provided with an output end connection port. The output end connection port can be provided with various structures to meet different scissor assembly connection requirements.

[0013] Preferably, the input end gear ring is provided with an external gear ring thread, and the output end gear ring is provided with an internal gear ring thread, and the input end gear ring and the output end gear ring are connected by threads and are coaxially arranged. The input end gear ring and the output end gear ring are connected by threads, which is easy to operate and has a tight connection.

[0014] Preferably, the input end gear ring is further provided with an input end internal thread or a locking hole for connecting to the motor; and the output end gear ring is provided with an output end gear ring internal thread.

[0015] The technical solution adopted by the present invention to achieve the second invention purpose is: an electric scissors, including the speed reducer.

[0016] The beneficial effects of the present invention are as follows: the reducer, by separately setting the input-end transmission reduction assembly and the output-end transmission reduction assembly, makes the tooth module of the output-end gear ring inside the output-end gear ring greater than the tooth module of the input-end gear ring inside the input-end gear ring, and can respectively set different numbers of teeth for the input-end gear ring inside the input-end gear ring and the output-end gear ring inside the output-end gear ring. Such a structure can set the reducer to a large speed ratio as needed, and the output end can also withstand large torque. A large speed ratio transmission is realized in the limited space inside the electric scissors shell, meeting the use requirements of the electric scissors in different occasions, making the electric scissors more widely applicable. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is an exploded structural diagram of the reducer (input end direction) of the utility model.

[0018] Figure 2 This is an exploded structural diagram of the utility model reducer (output end direction).

[0019] Figure 3 This is a front view of the reducer of the utility model.

[0020] Figure 4 yes Figure 3 Middle AA section view.

[0021] Figure 5 This is a schematic diagram of the decomposed structure of the reducer in Example 2.

[0022] Figure 6 This is a cross-sectional view of the reducer in Example 2.

[0023] Figure 7 This is a structural diagram of the reducer in Example 3.

[0024] Figure 8 This is a structural diagram of the reducer in Example 4.

[0025] Figure 9 This is a structural diagram of the electric scissors in Example 5.

[0026] In the figure: P1, input end gear set, P2, output end gear set, K50, input end ring gear internal gear, K51, output end ring gear internal gear, M3, three-stage reducer, M2, two-stage reducer, F31, integrated motor transmission gear, F30, segmented motor transmission gear, A21, input end sun gear, A20, output end sun gear, DP, scissor assembly, G, reducer end cover;

[0027] 600, external thread of gear ring, 700, internal thread of gear ring, 800, output terminal connection port;

[0028] 1. Input end ring gear, 2. Output end ring gear, 3. Output end ring gear internal thread, 4. Output end planetary gear carrier, 5. Gear shaft, 6. Output end planetary gear, 7. Secondary planetary gear carrier, 8. Secondary planetary gear, 9. Primary planetary gear carrier, 10. Primary planetary gear, 11. Input end internal thread, 12. Motor shaft transmission connection hole, 13. Motor. DETAILED DESCRIPTION

[0029] The technical solution of the present invention will be further described in detail below through specific embodiments and in conjunction with the accompanying drawings.

[0030] Example 1:

[0031] exist Figure 1 、 Figure 2 、 Figure 3 In the embodiment shown, a three-stage reducer M3 includes an input-end transmission reduction assembly and an output-end transmission reduction assembly that are separately arranged and coaxially transmit, and the input-end transmission reduction assembly and the output-end transmission reduction assembly have different reduction ratios.

[0032] The input-end transmission reduction assembly is connected to the drive motor, and the input-end transmission reduction assembly includes an input-end ring gear 1 and an input-end gear set P1 that is in transmission engagement with the input-end ring gear 1 .

[0033] The input end gear ring 1 is provided with an input end internal thread 11 facing the motor end for threaded connection with the motor. In other embodiments, a locking hole for fixing with the motor is provided on the end face of the input end gear ring 1 facing the motor end.

[0034] The input end gear ring 1 is provided with input end gear ring internal teeth K50 toward the inside of the output transmission reduction assembly, and is provided with gear ring external threads 600 on the outside. The input end gear ring internal teeth K50 are in driving engagement with the input end gear set P1.

[0035] The input end gear set P1 can be configured as a two-stage reduction transmission, such as M3; the input end gear set P1 can also be configured as a single-stage reduction transmission, such as M2.

[0036] In this embodiment, the input end gear set P1 is set as a two-stage reduction transmission, and the input end gear set P1 includes an integrated motor transmission gear F31, a first-stage planetary gear carrier 9, and a second-stage planetary gear carrier 7. Three first-stage planetary gears 10 are provided on the input end of the first-stage planetary gear carrier 9, and an input end sun gear A21 is provided on the output end of the first-stage planetary gear carrier 9. Three second-stage planetary gears 8 meshing with the input end sun gear A21 are provided between the first-stage planetary gear carrier 9 and the second-stage planetary gear carrier 7, and an output end sun gear A20 is provided on the output end of the second-stage planetary gear carrier 7.

[0037] The motor gear adopts an integrated motor transmission gear F31, that is, an integrated external gear structure is adopted, and a motor shaft transmission connection hole 12 is provided inside the motor transmission gear F31. The motor transmission gear F31 is meshed with three primary planetary gears 10.

[0038] The internal teeth K50 of the input end ring gear 1 are respectively meshed with the three primary planetary gears 10 .

[0039] The output end transmission reduction assembly includes an output end ring gear 2 and an output end gear set P2 that is in transmission meshing with the output end ring gear 2 .

[0040] The input end sun gear A21 and the first-stage planetary gear carrier 9 or the second-stage planetary gear carrier 7 can be arranged in an integrated structure or a split structure.

[0041] The output end sun gear A20 and the secondary planetary gear carrier 7 can be arranged in an integrated structure or a split structure, which can be selected according to the specific setting requirements.

[0042] The output end transmission reduction assembly includes an output end ring gear 2 and an output end gear set P2.

[0043] The output end gear ring 2 is provided with an internal gear ring thread 700 at one end thereof facing the output end gear ring. The input end gear ring 1 and the output end gear ring 2 are threadedly connected as one through the gear ring external thread 600 and the gear ring internal thread 700.

[0044] An output end gear ring inner tooth K51 is provided at the inner middle position of the output end gear ring 2, and an output end gear ring inner thread 3 is provided at the end of the output end gear ring 2 facing the scissors assembly.

[0045] The output gear set P2 includes an output planetary gear carrier 4, which is provided with an output connector 800. The output connector 800 can be configured in a variety of different shapes, such as a flat square hole, a spline structure, a threaded hexagonal or square structure, or a triangular hole. The specific configuration can be selected based on needs, as long as it is convenient for connection to the electric scissors.

[0046] The output end gear set includes four output end planetary gears 6, which are respectively meshed with the output end sun gear A20 and the output end ring gear inner gear K51, thereby forming the input end gear set P1 in transmission connection with the output end gear set P2.

[0047] The first-stage planetary gear, the second-stage planetary gear and the output-end planetary gear are respectively provided with a gear shaft 5 .

[0048] like Figure 4 As shown, the input end ring gear 1 and the output end ring gear 2 are coaxially arranged, the module of the output end ring gear inner teeth K51 inside the output end ring gear 2 is greater than the module of the input end ring gear inner teeth K50 inside the input end ring gear 1, and the number of teeth of the input end ring gear inner teeth K50 in the input end ring gear 1 and the number of teeth of the output end ring gear inner teeth K51 in the output end ring gear 2 are different.

[0049] In this embodiment, the three-stage reduction ratio of the input end gear set P1 and the output end gear set P2 is between 80 and 120, and preferably about 97 speed ratio in this embodiment.

[0050] like Figure 4 、 Figure 6 As shown, when using a three-stage reduction gear, the input ring gear 1 preferably has 46 teeth on its internal gear K50, 11 motor teeth, 16 teeth on the first-stage planetary gear 10, 14 teeth on the input sun gear A21, and 15 teeth on the second-stage planetary gear 8. The output ring gear 2 preferably has 37 teeth on its internal gear K51, 11 teeth on the output sun gear A20, and 12 teeth on the output planetary gear 6. In specific applications, the actual number of teeth can be selected and processed according to design requirements, and other speed ratios can be matched according to actual needs.

[0051] A reducer end cover G is also provided at the input end of the reducer.

[0052] Example 2:

[0053] exist Figure 5 、 Figure 6In the embodiment shown, a three-stage reducer M3 has a technical solution that is basically the same as that of embodiment 1, except that the motor teeth adopt a segmented motor transmission gear F30, and its specific structure includes a gear segment and a cylindrical segment, and a motor shaft transmission connection hole 12 is provided inside the cylindrical segment.

[0054] In another embodiment, the motor transmission gear is integrally provided with the motor shaft, that is, the motor transmission gear is directly provided on the output end of the motor shaft.

[0055] Example 3:

[0056] exist Figure 7 In the embodiment shown, a two-stage reducer M2 includes an input-end transmission reduction assembly and an output-end transmission reduction assembly that are separately arranged and coaxially transmit, and the input-end transmission reduction assembly and the output-end transmission reduction assembly have different reduction ratios.

[0057] The input-end transmission reduction assembly is connected to the drive motor, and the input-end transmission reduction assembly includes an input ring gear 1 and an input-end gear set P1.

[0058] The input end gear ring 1 is provided with an input end internal thread 11 facing the motor end for threaded connection with the motor. In other embodiments, a locking hole for fixing with the motor is provided on the end face of the input end gear ring 1 facing the motor end.

[0059] The input end gear ring 1 is provided with input end gear ring internal teeth K50 toward the inside of the output transmission reduction assembly, and is provided with gear ring external threads 600 on the outside. The input end gear ring internal teeth K50 are in driving engagement with the input end gear set P1.

[0060] The input end gear set P1 can be configured as a two-stage reduction transmission, such as M3; the input end gear set P1 can also be configured as a single-stage reduction transmission, such as M2.

[0061] In this embodiment, the input end gear set P1 is set as a first-stage reduction transmission, and the input end gear set P1 includes an integrated motor transmission gear F31 and a secondary planetary gear carrier 7. Three secondary planetary gears 8 are provided on the input end of the secondary planetary gear carrier 7, and an output end sun gear A20 is provided on the output end of the secondary planetary gear carrier 7.

[0062] The motor gear adopts an integrated motor transmission gear F31, that is, an integrated external gear structure is adopted, and a motor shaft transmission connection hole 12 is provided inside the motor transmission gear F31. The motor transmission gear F31 is meshed with three secondary planetary gears 8.

[0063] The internal teeth K50 of the input end ring gear 1 are respectively meshed with the three secondary planetary gears 8 .

[0064] The output end transmission reduction assembly includes an output end ring gear 2 and an output end gear set P2.

[0065] The output end sun gear A20 and the secondary planetary gear carrier 7 can be arranged in an integrated structure or a split structure, which can be selected according to the specific setting requirements.

[0066] The output end transmission reduction assembly includes an output end ring gear 2 and an output end gear set P2.

[0067] The output end gear ring 2 is provided with an internal gear ring thread 700 at one end thereof facing the output end gear ring. The input end gear ring 1 and the output end gear ring 2 are threadedly connected as one through the gear ring external thread 600 and the gear ring internal thread 700.

[0068] An output end gear ring inner tooth K51 is provided at the inner middle position of the output end gear ring 2, and an output end gear ring inner thread 3 is provided at the end of the output end gear ring 2 facing the scissors assembly.

[0069] The output gear set P2 includes an output planetary gear carrier 4, which is provided with an output connector 800. The output connector 800 can be configured in a variety of different shapes, such as a flat square hole, a spline structure, a threaded hexagonal or square structure, or a triangular hole. The specific configuration can be selected based on needs, as long as it is convenient for connection to the electric scissors.

[0070] The output end gear set includes four output end planetary gears 6, which are respectively meshed with the output end sun gear A20 and the output end ring gear inner gear K51, thereby forming the input end gear set P1 in transmission connection with the output end gear set P2.

[0071] The input end ring gear 1 and the output end ring gear 2 are coaxially arranged, the module of the output end ring gear inner tooth K51 of the same part of the output end ring gear 2 is greater than the module of the input end ring gear inner tooth K50 inside the input end ring gear 1, and the number of teeth of the input end ring gear inner tooth K50 in the input end ring gear 1 and the number of teeth of the output end ring gear inner tooth K51 in the output end ring gear 2 are different.

[0072] In this embodiment, the secondary reduction ratio of the input end gear set P1 and the output end gear set P2 is between 26 and 36, and preferably about 32 speed ratio in this embodiment.

[0073] like Figure 8As shown, when using a two-stage reduction gear, the input ring gear 1's internal teeth K50 preferably have 45 teeth, the motor teeth preferably have 9 teeth, the secondary planetary gears 8 preferably have 17 teeth, the output ring gear 2's internal teeth K51 preferably have 39 teeth, the output sun gear A20 preferably has 9 teeth, and the output planetary gears 6 preferably have 15 teeth. In specific applications, the actual number of teeth can be selected and processed according to design requirements, and other speed ratios can be matched according to actual needs.

[0074] Example 4:

[0075] exist Figure 8 In the embodiment shown, a two-stage reducer M2 has a technical solution that is basically the same as that of embodiment 3, except that the motor teeth adopt a segmented motor transmission gear F30, and its specific structure includes a gear segment and a cylindrical segment, and a motor shaft transmission connection hole 12 is provided inside the cylindrical segment.

[0076] In another embodiment, the motor gear is integrally provided with the motor shaft, that is, the motor transmission gear is directly provided on the output end of the motor shaft.

[0077] Example 5:

[0078] exist Figure 9 In the embodiment shown, an electric scissors includes the reducers M2 and M3 in embodiments 1 to 4, and also includes a motor 13 and a scissors assembly DP.

[0079] The reducers M3 and M2 respectively include an input end ring gear 1 and an output end ring gear 2. The input end ring gear 1 is provided with an input end gear set P1, and the output end gear set P2 is provided inside the output end ring gear 2. The input end ring gear 1 and the output end ring gear 2 are coaxially fixedly connected. The input end ring gear 1 is provided with an input end ring gear internal tooth K50, which is in transmission meshing with the input end gear set P1. The output end ring gear 2 is provided with an output end ring gear internal tooth K51, which is in transmission meshing with the output end gear set P2.

[0080] The module of the internal teeth K51 of the output end gear ring inside the output end gear ring 2 is greater than the module of the internal teeth K50 of the input end gear ring inside the input end gear ring 1, and the number of teeth of the internal teeth K50 of the input end gear ring 1 is different from the number of teeth of the internal teeth K51 of the output end gear ring 2. The input end gear set P1 is transmission-connected to the output end gear set P2.

[0081] The input end gear set P1 is a two-stage reduction transmission, such as M3; the input end gear set P1 can also be a single-stage reduction transmission, such as M2.

[0082] The total three-stage reduction ratio of the input end gear set P1 and the output end gear set P2 is between 80 and 120, preferably about 97 speed ratios; the total two-stage reduction ratio of the input end gear set P1 and the output end gear set P2 is between 26 and 36, preferably about 32 speed ratios.

[0083] As a preferred solution, when using a three-stage reduction gear, the input ring gear 1 preferably has 46 teeth on its internal gear K50, 11 on its motor gears, 16 on its first planetary gear 10, 14 on its input sun gear A21, and 15 on its second planetary gear 8. The output ring gear 2 preferably has 37 teeth on its internal gear K51, 11 on its output sun gear A20, and 12 on its output planetary gear 6. In specific applications, the actual number of teeth can be selected and processed according to design requirements, and other speed ratios can be matched according to actual needs.

[0084] As a preferred solution, when using a two-stage reduction gear, the input ring gear 1's internal teeth K50 preferably have 45 teeth, the motor teeth preferably have 9 teeth, the secondary planetary gears 8 preferably have 17 teeth, the output ring gear 2's internal teeth K51 preferably have 39 teeth, the output sun gear A20 preferably has 9 teeth, and the output planetary gears 6 preferably have 15 teeth. In specific applications, the actual number of teeth can be selected and processed according to design requirements, and other speed ratios can be matched according to actual needs.

[0085] The motor teeth connected to the motor 13 can have three structures, and any one of them can be selected.

[0086] In the first structure, the motor teeth adopt a segmented motor transmission gear F30, which is arranged in a gear segment and a cylindrical segment structure, and a motor shaft transmission connection hole 12 is provided inside the cylindrical segment.

[0087] In the second structure, the motor teeth adopt an integrated motor transmission gear F31, in which external teeth are directly provided on the outside and a motor shaft transmission connection hole 12 is provided on the inside.

[0088] In the third structure, the motor shaft and the motor gear are integrated, that is, the motor transmission gear is integrally arranged on the motor shaft.

[0089] The output end planet carrier 4 is provided with an output end connection port 800 , which can be configured in various shapes, such as a flat square, a spline, a threaded hexagonal, a square, a triangle, and the like.

[0090] The output end sun gear A20, the input end sun gear A21, the first stage planetary gear carrier 9, and the second stage planetary gear carrier 7 can adopt an integrated structure or a split structure.

[0091] The input end gear ring 1 may be provided with an input end internal thread 11 or a plurality of locking holes for achieving fixed connection with the motor, and the output end gear ring 2 is provided with an output end gear ring internal thread 3 for achieving connection with the scissors assembly.

[0092] The reducer in the above embodiment, by reasonably allocating the modules and gear ratios of the input and output ends, completely solves the problem of achieving a high speed ratio within the limited installation space of the electric scissors while having the output end capable of withstanding high torque.

[0093] The electric scissors using the above-mentioned reducer have a large speed ratio and can withstand large torque, which greatly improves the application range of the electric scissors.

[0094] The above embodiments are only some of the embodiments of the present invention, not all of them. At the same time, based on the embodiments described in the present invention, all other embodiments obtained by a person of ordinary skill in the art on the basis of the technical solution of the present application without making any creative work shall fall within the scope of protection of the present invention.

Claims

1. A reducer, characterized in that: The invention comprises an input end transmission reduction assembly and an output end transmission reduction assembly which are separately arranged and coaxially driven, wherein the input end transmission reduction assembly comprises an input end gear ring (1) and an input end gear set (P1) which is transmission-engaged with the input end gear ring (1), and the output end transmission reduction assembly comprises an output end gear ring (2) and an output end gear set (P2) which is transmission-engaged with the output end gear ring (2), wherein the module of the output end gear ring internal teeth (K51) inside the output end gear ring (2) is greater than the module of the input end gear ring internal teeth (K50) inside the input end gear ring (1), and the input end gear ring internal teeth (K50) and the output end gear ring internal teeth (K51) are respectively provided with different numbers of teeth.

2. The reducer according to claim 1, characterized in that: The input end gear set (P1) is a two-stage reduction transmission, and the three-stage reduction ratio of the input end gear set (P1) and the output end gear set (P2) is between 80 and 120.

3. The reducer according to claim 2, characterized in that: The input end gear set (P1) is configured as a two-stage reduction transmission, and the input end gear set (P1) comprises a motor transmission gear, a first-stage planetary gear frame (9), and a second-stage planetary gear frame (7). A first-stage planetary gear (10) is provided on the input end of the first-stage planetary gear frame (9), an input end sun gear (A21) is provided on the output end of the first-stage planetary gear frame (9), a second-stage planetary gear (8) meshing with the input end sun gear (A21) is provided between the first-stage planetary gear frame (9) and the second-stage planetary gear frame (7), and an output end sun gear (A20) is provided on the output end of the second-stage planetary gear frame (7).

4. The reducer according to claim 1, wherein: The input end gear set (P1) is a first-stage reduction transmission, and the second-stage reduction ratio between the input end gear set (P1) and the output end gear set (P2) is between 26 and 36.

5. The reducer according to claim 4, characterized in that: The input end gear set (P1) is configured as a first-stage reduction transmission, and the input end gear set (P1) includes a motor transmission gear and a second-stage planetary gear carrier (7). A second-stage planetary gear (8) is provided on the input end of the second-stage planetary gear carrier (7), and an output end sun gear (A20) is provided on the output end of the second-stage planetary gear carrier (7).

6. The reducer according to claim 3 or 5, characterized in that: The motor transmission gear is an integrated motor transmission gear, and a motor shaft transmission connection hole (12) is provided inside the integrated motor transmission gear; or, the motor transmission gear is a segmented motor transmission gear, and the segmented motor transmission gear includes a gear segment and a cylindrical segment, and a motor shaft transmission connection hole (12) is provided inside the cylindrical segment; or, the motor transmission gear is provided integrally with the motor shaft.

7. The reducer according to any one of claims 1 to 5, characterized in that: The output end gear set (P2) comprises an output end planetary gear frame (4) and an output end planetary gear (6), and an output end connection port (800) is provided on the output end planetary gear frame (4).

8. The reducer according to any one of claims 1 to 5, characterized in that: The input end gear ring (1) is provided with a gear ring external thread (600), and the output end gear ring (2) is provided with a gear ring internal thread (700). The input end gear ring (1) and the output end gear ring (2) are connected via threads and are coaxially arranged.

9. The reducer according to any one of claims 1 to 5, characterized in that: The input end gear ring (1) is also provided with an input end internal thread (11) or a locking hole for connecting to the motor; the output end gear ring (2) is provided with an output end gear ring internal thread (3).

10. An electric scissors, characterized in that A reducer comprising the reducer according to any one of claims 1 to 9.

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