Motor speed reduction mechanism and synchronous motor

Abstract

The utility model relates to the technical field of motor discloses a motor reduction mechanism and synchronous motor, including the casing, this reduction mechanism includes the installation component that is located in the casing, the reduction gear set that is located in the inside of this installation component, the output component that is located in the middle of installation component, this installation component is used to fix the reduction gear set, this reduction gear set is used to adjust the output power of motor, the output component is used to the power of motor to the outside output, the synchronous motor includes the stator component that is located in the casing, the rotor component that is located in the stator component, the stator component is fixedly connected with the casing, the rotor component is rotatably connected with the stator component through the limiting shaft that is located in the middle of casing, the utility model has higher efficiency and output moment due to the operation of motor reduction mechanism, can provide stable torque output in the working speed range, the synchronous motor structure is more compact, can provide higher power, and the required installation space is smaller, and the maintenance cost is relatively lower.

Description

Technical Field

[0001] This utility model relates to the technical field of motors, and specifically to a motor reduction mechanism and a synchronous motor. Background Technology

[0002] With the country's continuous promotion of new energy and the requirements for energy conservation, emission reduction, and environmental protection, the market maintains a very high level of interest in the research and development of motors that can operate efficiently and stably. One existing technology is a dual-motor direct-drive gearbox with a planetary reduction mechanism. The power components include a first permanent magnet synchronous motor and a second permanent magnet synchronous motor, with the output ends of the first and second permanent magnet synchronous motors extending into the interior of the gearbox. The transmission components include a planetary reduction mechanism and a first input shaft installed on the output end of the first permanent magnet synchronous motor. A second input shaft is installed on the output end of the planetary reduction mechanism. Although this technology improves torque output, it also has problems such as complex installation, complex motors and reduction mechanisms, insufficient operational stability, poor noise reduction, and increased manufacturing costs due to the multiple motors. Utility Model Content

[0003] The purpose of this utility model is to overcome the shortcomings of the prior art and provide a motor reduction mechanism and a synchronous motor. The synchronous motor can provide stable torque output throughout the entire working speed range, has a more compact structure, higher power output, requires less installation space, and improves the working efficiency of the product.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: A motor reduction mechanism includes a housing. The reduction mechanism includes a mounting assembly disposed within the housing, a reduction gear set disposed within the mounting assembly, and an output assembly disposed in the middle of the mounting assembly. The mounting assembly is used to fix the reduction gear set, the reduction gear set is used to adjust the power output speed of the motor, and the output assembly is used to output the power of the motor outward. The mounting assembly includes a base plate, a cover plate disposed above the base plate, and a partition plate disposed between the cover plate and the base plate. The base plate is fixedly connected to the cover plate by at least two connecting blocks. The plate is fixedly connected to the connecting block; the base plate is provided with at least two first bearing seats, and the cover plate is provided with at least two second bearing seats opposite to the first bearing seats of the base plate. At least two first through holes are provided between the partition plate and the first bearing seats of the base plate and the second bearing seats of the cover plate. A gear shaft is sleeved between the first bearing seats and the second bearing seats. The reduction gear set includes at least two double gears, which are sleeved on the gear shaft. The double gears are composed of a first stage synchronous gear and a second stage reduction gear, and the second stage reduction gear passes through the first through hole.

[0005] The connecting block of the base plate is provided with a first step and a second step above the first step. The first step is used to limit and fix the middle partition, and the second step is used to limit and fix the cover plate. The base plate is provided with a second through hole in the middle.

[0006] The partition plate has a third through hole in the middle, and the side of the partition plate has a first slot that matches the first step of the connecting block.

[0007] The cover plate has a fourth through hole in the middle, and a collar is provided on the fourth through hole. The collar is integrally formed with the cover plate, and the side of the cover plate has a second slot that cooperates with the second step of the connecting block.

[0008] The output assembly includes a first bushing disposed in the third through hole, a spring plate disposed above the first bushing, a second bushing disposed in the fourth through hole of the cover plate, an output shaft passing through the second bushing, an output tooth disposed at one end of the output shaft, and a washer disposed above the output tooth. The output shaft passes through the cover plate, the second bushing, the washer, the output tooth, and the spring plate in sequence before being fitted into the first bushing. The output tooth meshes with the second stage reduction gear of the double gear.

[0009] A synchronous motor includes a reduction mechanism, the reduction mechanism being the motor reduction mechanism described above. The synchronous motor includes a stator assembly disposed within a housing and a rotor assembly disposed within the stator assembly. The stator assembly is fixedly connected to the housing, and the rotor assembly is rotatably connected to the stator assembly via a limiting shaft disposed in the middle of the housing.

[0010] A gasket is provided between the bottom of the housing and the rotor assembly. The gasket is used to support the rotor assembly and prevent it from rubbing against the bottom of the housing when rotating. A wire hole is provided on the side of the housing for installing a power cord.

[0011] One end of the housing is provided with a locking hole, and a retaining spring is provided on the locking hole. The retaining spring is used to fix the deceleration mechanism inside the housing.

[0012] The beneficial effects of this utility model are as follows: the double gears of the motor reduction mechanism are arranged on the same plane, which facilitates the efficient, precise and stable output torque of the reduction mechanism, and is usually quieter during operation; the design of the double gears penetrating the middle plate and the output gear penetrating the cover plate at the same time has good heat dissipation performance and can be used for long-term continuous operation; the motor gear penetrating the base plate and meshing with the double gears can provide a high starting torque during startup; through the cooperation of the snap hole and snap ring, assembly and disassembly can be carried out quickly and easily. The double gears, snap rings, mounting components and other components have a simple structure but are highly practical, easy to manufacture, and effectively reduce costs. Attached Figure Description

[0013] Figure 1This is a perspective view of a motor reduction mechanism and a synchronous motor according to this utility model.

[0014] Figure 2 This is a cross-sectional view of the present invention.

[0015] Figure 3 This is an exploded schematic diagram of this utility model.

[0016] Figure 4 This is a schematic diagram of the structure of the base plate of this utility model.

[0017] Figure 5 This is a schematic diagram of the structure of the partition plate of this utility model.

[0018] Figure 6 This is a schematic diagram of the cover plate of this utility model.

[0019] Explanation of icon numbers: 1-Housing, 10-Limiting shaft, 11-Wire hole, 12-Snap hole, 2-Mounting assembly, 20-Base plate, 200-Connecting block, 201-First shaft seat, 202-First step, 203-Second step, 204-Second through hole, 21-Middle partition plate, 210-First through hole, 211-Third through hole, 212-First slot, 22-Cover plate, 220-Second shaft seat, 221-Fourth through hole, 222-Collar ring, 223-The 2-Slot, 3-Reduction gear set, 30-Double gear, 300-First stage synchronous gear, 301-Second stage reduction gear, 31-Gear shaft, 4-Output assembly, 40-First bushing, 41-Spring plate, 42-Second bushing, 43-Output shaft, 44-Output gear, 45-Washer, 5-Stator assembly, 50-Winding assembly, 51-Frame pole claw, 6-Rotor assembly, 60-Rotor, 61-Rotor gear, 62-Washer, 7-Snap ring. Detailed Implementation

[0020] The present invention will be further described below with reference to the accompanying drawings: like Figure 1-6 As shown, this utility model relates to a motor reduction mechanism, including a housing 1. The reduction mechanism includes a mounting component 2 disposed within the housing 1, a reduction gear set 3 disposed inside the mounting component 2, and an output component 4 disposed in the middle of the mounting component 2. The mounting component 2 is used to fix the reduction gear set 3, the reduction gear set 3 is used to adjust the output power of the motor, and the output component 4 is used to output the power of the motor to the outside.

[0021] like Figure 1-6As shown, the mounting assembly 2 includes a base plate 20, a cover plate 22 disposed above the base plate 20, and a partition plate 21 disposed between the cover plate 22 and the base plate 20. The base plate 20 is fixedly connected to the cover plate 22 by at least two connecting blocks 200, and the partition plate 21 is fixedly connected to the connecting blocks 200. The base plate 20 is provided with at least two first bearing seats 201, and the cover plate 22 is provided with at least two second bearing seats 220 opposite to the first bearing seats 201 of the base plate 20. The partition plate 21 is provided with at least two first through holes 210.

[0022] like Figure 1-6 As shown, the connecting block 200 of the base plate 20 is provided with a first step 202 and a second step 203 above the first step 202. The first step 202 is used to limit and fix the middle partition 21, and the second step 203 is used to limit and fix the cover plate 22; the base plate 20 is provided with a second through hole 204 in the middle.

[0023] like Figure 1-6 As shown, the middle partition 21 has a third through hole 211 in the middle, which is used to fix the output shaft 43. The side of the middle partition 21 has a first slot 212 that cooperates with the first step 202 of the connecting block 200.

[0024] like Figure 1-6 As shown, the cover plate 22 has a fourth through hole 221 in the middle, and a collar 222 is provided on the fourth through hole 221. The collar 222 is integrally formed with the cover plate 22, and the side of the cover plate 22 has a second slot 223 that cooperates with the second step 203 of the connecting block 200.

[0025] like Figure 1-6 As shown, the reduction gear set 3 includes at least two double gears 30 and at least two gear shafts 31 sleeved between the first shaft seat 201 and the second shaft seat 220. The double gears 30 are sleeved on the gear shafts 31. The double gears 30 are composed of a first stage synchronous gear 300 and a second stage reduction gear 301. The second stage reduction gear 301 passes through the first through hole 210.

[0026] like Figure 1-6 As shown, the output assembly 4 includes a first bushing 40 disposed in the third through hole 211, a spring plate 41 disposed above the first bushing 40, a second bushing 42 disposed in the fourth through hole 221 of the cover plate 22, an output shaft 43 passing through the second bushing 42, an output tooth 44 disposed at one end of the output shaft 43, and a washer 45 disposed above the output tooth 44. The output shaft 43 passes through the cover plate 22, the second bushing 42, the washer 45, the output tooth 44, and the spring plate 41 in sequence before being fitted into the first bushing 40. The output tooth 44 meshes with the second stage reduction tooth 301 of the double gear 30.

[0027] Furthermore, the reduction mechanism is fitted onto the gear shaft 31 via the first bearing 201 on the base plate 20. Next, the double gear 30 is fitted onto the gear shaft 31 with the first-stage synchronous gear 300 at the bottom. Then, the partition plate 21 is inserted along the connecting block 200 on the base plate 20, and a limiting structure is formed by the first slot 212 of the partition plate 21 and the first step 202 of the connecting block 200. The second-stage reduction gear 301 of the double gear 30 passes through the first through hole 210 of the partition plate 21. Finally, a washer 45, an output gear 44, and a spring sheet are sequentially inserted into one end of the output shaft 43. 41. Second bushing 42. Next, insert one end of the output shaft 43 of the assembled output assembly 4 into the first bushing 40. Finally, the output shaft 43 passes through the fourth through hole 221 of the cover plate 22. The second bushing 42 and the collar 222 cooperate to prevent the output shaft 43 from coming loose when rotating. Insert the second slot 223 of the cover plate 22 along the connecting block 200 on the base plate 20. The second slot 223 of the cover plate 22 and the second step 203 of the connecting block 200 cooperate to form a limiting structure. Insert one end of the gear shaft 31 into the second bearing 220 to complete the fixing of both ends of the gear shaft 31.

[0028] like Figure 1-6 As shown, the synchronous motor includes a stator assembly 5 disposed in a housing 1 and a rotor assembly 6 disposed in the stator assembly 5. The stator assembly 5 is fixedly connected to the housing 1, and the rotor assembly 6 is rotatably connected to the stator assembly 5 through a limiting shaft 10 in the middle of the housing 1.

[0029] Furthermore, the stator assembly 5 consists of at least one winding group 50, which is covered with a skeleton pole claw 51, and the rotor assembly 6 consists of a rotor 60 and rotor teeth 61.

[0030] like Figure 1-6 As shown, a gasket 62 is provided between the bottom of the housing 1 and the rotor assembly 6. The gasket 62 is used to support the rotor assembly 6 and prevent it from rubbing against the bottom of the housing 1 when rotating. A wire hole 11 is provided on the side of the housing 1 for installing a power cord.

[0031] like Figure 1-6 As shown, one end of the housing 1 is provided with a locking hole 12, and a retaining spring 7 is provided on the locking hole 12. The retaining spring 7 is used to fix the deceleration mechanism inside the housing.

[0032] Further, the synchronous motor is assembled as follows: First, the stator assembly 5 is pressed into the housing 1. Second, the shim 62 is fitted onto the limiting shaft 10. Next, the rotor assembly 6 is fitted onto the limiting shaft 10, and the rotor 60 rotates around the limiting shaft 10. The rotor teeth 61 rotate synchronously with the rotor 60. Next, the reduction mechanism is inserted, so that the rotor teeth 61 pass through the second through hole 204 of the base plate 20 and mesh with the first stage synchronous teeth 300 of the double gear 30. Finally, the snap ring 7 is snapped into the snap hole 12 of the housing 1 to complete the assembly. When the synchronous motor is powered on, the stator assembly 5 generates magnetic force to drive the rotor 60 to rotate. The rotor 60 drives the rotor teeth 61 to rotate. Through the meshing of the rotor teeth 61 with the first stage synchronous teeth 300, the second stage reduction teeth 301 mesh with the output teeth 44 of the reduction mechanism. The output teeth 44 are fixedly connected to the output shaft 43, so that the rotational power of the rotor 60 is transmitted to the output shaft 43 to complete the power output.

[0033] The above description is only a preferred embodiment of the present utility model and is not intended to limit the scope of the present utility model. Therefore, without departing from the design spirit of the present utility model, any equivalent changes or modifications made by those skilled in the art to the structure, features and principles of the present utility model should fall within the protection scope of the patent application of the present utility model.

Claims

1. A motor reduction mechanism, comprising a housing, characterized in that: The reduction mechanism includes a mounting assembly housed within a housing, a reduction gear set housed inside the mounting assembly, and an output assembly located in the middle of the mounting assembly. The mounting assembly is used to fix the reduction gear set, the reduction gear set is used to adjust the power output speed of the motor, and the output assembly is used to output the power of the motor outward. The mounting assembly includes a base plate, a cover plate located above the base plate, and a partition plate located between the cover plate and the base plate. The base plate is fixedly connected to the cover plate by at least two connecting blocks, and the partition plate is fixedly connected to the connecting blocks. The base plate is provided with at least two first bearing seats, and the cover plate is provided with at least two second bearing seats opposite to the first bearing seats of the base plate. At least two first through holes are provided between the partition plate and the first bearing seats of the base plate and the second bearing seats of the cover plate. A gear shaft is sleeved between the first bearing seats and the second bearing seats. The reduction gear set includes at least two double gears, which are sleeved on the gear shaft. The double gears consist of a first stage of synchronous teeth and a second stage of reduction teeth, and the second stage of reduction teeth passes through the first through holes.

2. The motor reduction mechanism according to claim 1, characterized in that: The connecting block of the base plate is provided with a first step and a second step above the first step. The first step is used to limit and fix the middle partition, and the second step is used to limit and fix the cover plate. The base plate is provided with a second through hole in the middle.

3. The motor reduction mechanism according to claim 2, characterized in that: The partition plate has a third through hole in the middle, and the side of the partition plate has a first slot that cooperates with the first step of the connecting block.

4. The motor reduction mechanism according to claim 3, characterized in that: The cover plate has a fourth through hole in the middle, and a collar is provided on the fourth through hole. The collar is integrally formed with the cover plate, and the side of the cover plate has a second slot that cooperates with the second step of the connecting block.

5. The motor reduction mechanism according to claim 4, characterized in that: The output assembly includes a first bushing disposed in the third through hole, a spring plate disposed above the first bushing, a second bushing disposed in the fourth through hole of the cover plate, an output shaft passing through the second bushing, an output tooth disposed at one end of the output shaft, and a washer disposed above the output tooth. The output shaft passes through the cover plate, the second bushing, the washer, the output tooth, and the spring plate in sequence before being fitted into the first bushing. The output tooth meshes with the second stage reduction gear of the double gear.

6. A synchronous motor, comprising a reduction gear mechanism, characterized in that: The reduction mechanism is the motor reduction mechanism according to any one of claims 1-5. The synchronous motor includes a stator assembly disposed in the housing and a rotor assembly disposed in the stator assembly. The stator assembly is fixedly connected to the housing, and the rotor assembly is rotatably connected to the stator assembly through a limiting shaft disposed in the middle of the housing.

7. A synchronous motor according to claim 6, characterized in that: A gasket is provided between the bottom of the housing and the rotor assembly. The gasket is used to support the rotor assembly and prevent it from rubbing against the bottom of the housing when rotating. A wire hole is provided on the side of the housing for installing a power cord.

8. A synchronous motor according to claim 7, characterized in that: One end of the housing is provided with a locking hole, and a retaining spring is provided on the locking hole. The retaining spring is used to fix the deceleration mechanism inside the housing.

Images