A synchronous machine

Abstract

The utility model discloses a synchronous motor, including motor body and transmission mechanism, and motor body has a drive shaft, transmission mechanism includes mounting panel, rotates and connects transmission assembly on mounting panel and output shaft, mounting panel fixed mounting is on motor body, and drive shaft is connected with transmission assembly transmission to provide drive force for transmission assembly, the mounting panel is provided with through -hole and the flanging structure that protrudes to the periphery of through -hole upwards, the lower extreme of output shaft is provided for the ring groove of flanging structure insertion and with this flanging structure adapts, the transmission tooth that forms with transmission assembly transmission cooperation is on output shaft, and the periphery setting flanging structure is corresponding to through -hole in mounting panel, and the ring groove that is provided for flanging structure insertion and with this flanging structure adapts is in the lower extreme of output shaft, through with transmission shaft rotatablely installed on flanging structure to the contact area of output shaft and mounting panel has been increased effectively, and the stability and life of output shaft have been improved effectively.

Description

Technical Field

[0001] This utility model relates to the technical field of household appliances, and in particular to a synchronous motor. Background Technology

[0002] Household appliances include floor fans, tower fans, and space heaters. Most of these appliances are equipped with oscillation devices to achieve the oscillation function, and the main power source for this function is a synchronous motor.

[0003] Existing synchronous motors, such as the claw-pole permanent magnet synchronous motor disclosed in Chinese Patent Application Publication No. CN103475180A, include a rear cover plate, four transmission gear pairs, an intermediate plate, four transmission shafts, a coil support, a housing, a wire connector, a sheath, an input shaft assembly, an output shaft assembly, and power cables. The wire connector is inserted into two slots in the coil support, and the coil support is positioned by engaging with four bosses in the housing through four support slots. The sheath engages with the first slot in the housing and is installed in the inner cavity of the housing. The four transmission shafts are respectively positioned in four connecting holes in the intermediate plate. The four transmission gear pairs are respectively fitted into the four transmission shafts, and the input shaft assembly is positioned by the central axis of the housing and placed on the coil support. The bracket has an inner hole; the output shaft assembly is placed in the output shaft sleeve of the coil bracket, and the five mating holes in the rear cover plate are positioned by mating with the four transmission shafts and the central shaft of the housing. For example, the synchronous motor, oscillating device and household appliance disclosed in Chinese Patent Application Publication No. CN219107233U include a motor body, an output component and a transmission component. The motor body has a drive gear on its rotating shaft; the output component is used to connect with the driving target; the transmission component drives the drive gear and the output component, and the transmission component has a first gear that meshes with the drive gear. The first gear and the drive gear have a soft contact meshing.

[0004] However, existing synchronous motors still have the following problems:

[0005] 1. The upper end of the output shaft is rotatably installed in the through hole of the cover plate, and the lower end of the output shaft is rotatably installed in the through hole of the mounting plate. Due to the thinness of the mounting plate, the contact area between the through hole wall and the output shaft is small, resulting in poor transport stability of the output shaft. In addition, after the output end has been working for a long time, its outer diameter is worn. At this time, the gap between the output shaft and the through hole expands, causing the output shaft to fail to work properly.

[0006] 2. In addition to two power lines, existing synchronous motors also have two control lines. These two control lines are prone to getting tangled with the transmission mechanism during operation, so the routing structure of the control lines needs to be improved. Summary of the Invention

[0007] The purpose of this invention is to provide a synchronous motor in which a flange structure is provided around the corresponding through hole on the mounting plate, and an annular groove is provided at the lower end of the output shaft for the flange structure to be inserted and adapted to the flange structure. By rotatably mounting the transmission shaft on the flange structure, the contact area between the output shaft and the mounting plate is effectively increased, thereby effectively improving the stability and service life of the output shaft.

[0008] The above-mentioned technical objective of this utility model is achieved through the following technical solution: a synchronous motor, including a motor body and a transmission mechanism, the motor body having a drive shaft; the transmission mechanism including a mounting plate, a transmission component rotatably connected to the mounting plate, and an output shaft, the mounting plate being fixedly mounted on the motor body, the drive shaft being connected to the transmission component to provide driving force to the transmission component, the mounting plate being provided with a through hole and a flange structure protruding upward from the periphery of the through hole, the motor body being provided with a clearance space corresponding to the position of the through hole, the lower end of the output shaft being provided with an annular groove for the flange structure to be inserted and adapted to the flange structure, and the output shaft being formed with transmission teeth that are in transmission cooperation with the transmission component.

[0009] Furthermore, the lower end center of the output shaft is provided with a positioning part that extends into the through hole, and the positioning part is adapted to the diameter of the through hole.

[0010] Furthermore, the motor body has two control lines, and the output shaft has a wiring channel along its axis. The control lines are led out through the through hole and the wiring channel in sequence.

[0011] Furthermore, the motor body includes a stator assembly and a rotor assembly, and the control line is electrically connected to the stator assembly. The stator assembly is provided with a clearance space corresponding to the through hole position, and the control line extends into the through hole and the wiring channel through the clearance space.

[0012] Furthermore, the motor body is provided with a central channel for accommodating the rotor assembly, and the mounting plate is provided with a limiting strip that is inserted into the central channel and engages with the central channel in a direction perpendicular to the insertion direction. The inner wall of the central channel is provided with a limiting protrusion that engages with the limiting strip to prevent rotation.

[0013] Furthermore, a through groove is provided at the position of the motor body and the mounting plate near the through hole. One end of the through groove is connected to the through hole, and the other end of the through groove passes through the side end of the motor body and the mounting plate.

[0014] Furthermore, the output shaft includes a central shaft and transmission gears, which are integrally injection molded.

[0015] Furthermore, the lower end of the transmission gear is provided with a weight-reducing groove and a reinforcing rib connecting the central shaft and the outside of the weight-reducing groove.

[0016] Furthermore, the transmission assembly includes a first double gear, a second double gear, a third double gear, and a fourth double gear. The first double gear includes gears A and B arranged coaxially, the second double gear includes gears C and D arranged coaxially, the third double gear includes gears E and F arranged coaxially, and the fourth double gear includes gears G and H arranged coaxially. Gear A is connected to the drive shaft of the motor body, gear C is connected to gear B, gear E is connected to gear D, gear G is connected to gear F, and gear H is connected to the transmission teeth of the output shaft.

[0017] In summary, this utility model has the following beneficial effects:

[0018] 1. The synchronous motor of this application has a flange structure around the corresponding through hole of the mounting plate, and an annular groove for inserting the flange structure and adapting to the flange structure is provided at the lower end of the output shaft. By rotatably mounting the transmission shaft on the flange structure, the contact area between the output shaft and the mounting plate is effectively increased, thereby effectively improving the stability and service life of the output shaft.

[0019] 2. The synchronous motor of this application has a wiring channel set at the center of the output shaft, which can effectively prevent the control wire from getting tangled in the transmission mechanism, and at the same time achieve the compactness and miniaturization of the synchronous motor structure. Attached Figure Description

[0020] Figure 1 This is a front structural diagram of the present invention.

[0021] Figure 2 This is a schematic diagram of the back structure of this utility model.

[0022] Figure 3 This is an exploded view of the motor body and transmission mechanism of this utility model.

[0023] Figure 4 This is a top view of the present invention.

[0024] Figure 5 This is the utility model Figure 4 Sectional view at point A.

[0025] Figure 6 This is a schematic diagram of the wiring channel of this utility model.

[0026] Figure 7 This is a schematic diagram of the output shaft of this utility model.

[0027] In the diagram: 10. Motor body; 11. Clearance space; 12. Control line; 13. Stator assembly; 14. Limiting protrusion; 20. Transmission mechanism; 21. Mounting plate; 211. Through hole; 212. Flanged structure; 213. Limiting strip; 22. Transmission assembly; 221. First double gear; 222. Second double gear; 223. Third double gear; 224. Fourth double gear; 23. Output shaft; 231. Central shaft; 232. Transmission gear; 233. Annular groove; 234. Positioning part; 235. Wiring channel; 236. Weight reduction groove; 237. Reinforcing rib. Detailed Implementation

[0028] The present invention will be further described below with reference to the accompanying drawings.

[0029] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can typically be arranged and designed in various different configurations.

[0030] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0031] like Figures 1-7As shown, a synchronous motor includes a motor body 10 and a transmission mechanism 20. The motor body 10 has a drive shaft (not shown in the figure). The transmission mechanism 20 includes a mounting plate 21, a transmission component 22 rotatably connected to the mounting plate 21, and an output shaft 23. The mounting plate 21 is fixedly mounted on the motor body 10. The drive shaft is connected to the transmission component 22 to provide driving force to the transmission component 22. The mounting plate 21 is provided with a through hole 211 and a flange structure 212 protruding upward from the periphery of the through hole 211. The motor body 10 is positioned corresponding to the through hole 211. An clearance space 11 is provided. The lower end of the output shaft 23 is provided with an annular groove 233 for the flange structure 212 to be inserted and adapted to the flange structure 212. The output shaft 23 is formed with transmission teeth 232 that are in transmission cooperation with the transmission component 22. The top of the synchronous motor is provided with a cover plate (not shown in the figure). The cover plate is used to connect with the mounting plate 21. The cover plate is provided with a channel for the output shaft 23 to extend out. The output shaft 23 is adapted to the channel. That is, the upper end of the output shaft 23 is rotatably installed in the channel, and the lower end of the output shaft 23 is rotatably installed in the flange structure 212.

[0032] The synchronous motor of this application has a flange structure 212 around the through hole 211 on the mounting plate 21, and an annular groove 233 at the lower end of the output shaft 23 for the flange structure 212 to be inserted and adapted to the flange structure 212. By rotatably mounting the transmission shaft on the flange structure 212, the contact area between the output shaft 23 and the mounting plate 21 is effectively increased, thereby effectively improving the stability and service life of the output shaft 23.

[0033] In some embodiments, a positioning part 234 extending into the through hole 211 is provided at the lower center of the output shaft 23. The positioning part 234 is adapted to the diameter of the through hole 211. By providing the positioning part 234, the positioning part 234 is rotatably connected to the through hole 211. At the same time, the flange structure 212 is rotatably connected to the annular groove 233, thereby greatly improving the connection stability of the output shaft 23 and making the output shaft 23 work more smoothly.

[0034] In some embodiments, the motor body 10 has two control lines 12, and the output shaft 23 has a wiring channel 235 along its axis. In this case, the wiring channel 235 is connected to the annular groove 233, and the inner diameter of the annular groove 233 is consistent with the inner diameter of the wiring channel 235. That is, the wiring channel 235 passes through the lower end of the output shaft 23 and also serves as the annular groove 233. The control lines 12 are led out through the through hole 211 and the wiring channel 235 in sequence. Specifically, in order to prevent the two control lines 12 from getting tangled with the transmission component 22, this embodiment sets a wiring channel 235 in the center of the output shaft 23. The two control lines 12 enter from the lower end of the output shaft 23 and extend from the upper end of the output shaft 23. That is, although the output shaft 23 is continuously running when working, the control lines 12 in the wiring channel 235 are kept fixed. Through this setting, not only can the control lines 12 be effectively prevented from getting tangled with the transmission mechanism 20, but the structure of the synchronous motor can also be made compact and miniaturized. The motor body 10 is also provided with two power lines, which are led downwards.

[0035] In some embodiments, the motor body 10 includes a stator assembly 13 and a rotor assembly (not shown in the figure). A control line 12 is electrically connected to the stator assembly 13. The stator assembly 13 is provided with a clearance space 11 at the position corresponding to the through hole 211. The control line 12 extends through the clearance space 11 into the through hole 211 and the wiring channel 235. The control line 12 is located at the other end of the positioning assembly relative to the clearance space 11. The control line 12 first wraps around the outer periphery of the stator assembly 13 and then passes through the clearance space 11 to extend into the wiring channel 235.

[0036] In some embodiments, the motor body 10 is provided with a central channel for accommodating the rotor assembly, and the mounting plate 21 is provided with a limiting strip 213 that is inserted into the central channel and engages with the central channel in a direction perpendicular to the insertion direction. The inner wall of the central channel is provided with a limiting protrusion 14 that engages with the limiting strip 213 to prevent rotation. With the above configuration, the mounting plate 21 can be firmly pressed onto the motor body 10, and the assembly is more convenient and the connection is more secure.

[0037] In some embodiments, the motor body 10 and the mounting plate 21 are provided with a through groove near the through hole 211. One end of the through groove is connected to the through hole 211, and the other end of the through groove passes through the side end of the motor body 10 and the mounting plate 21. By setting the through groove, the problem of inconvenience in threading the control line 12 is solved. That is, the control line 12 can be extended from the through groove at the side end into the through hole 211 and pass into the wiring channel 235 of the output shaft 23.

[0038] In some embodiments, the output shaft 23 includes a central shaft 231 and a transmission gear 232, which are integrally injection molded. Compared to existing output shafts 23 that use metal parts, this application uses a plastic material for the output shaft 23, which is not only easier to process but also has lower material costs.

[0039] In some embodiments, a weight-reducing groove 236 and a reinforcing rib 237 connected to the center shaft 231 and the outside of the weight-reducing groove 236 are provided at the lower end of the transmission gear 232. The weight-reducing groove 236 can reduce the overall weight of the output shaft 23 and save material costs. The reinforcing rib 237 can avoid the problem of low structural strength caused by the weight-reducing groove 236.

[0040] In some embodiments, the transmission assembly 22 includes a first double gear 221, a second double gear 222, a third double gear 223, and a fourth double gear 224. The first double gear 221 includes gears A and B coaxially arranged, the second double gear 222 includes gears C and D coaxially arranged, the third double gear 223 includes gears E and F coaxially arranged, and the fourth double gear 224 includes gears G and H coaxially arranged. Gear A is driven by the drive shaft of the motor body 10, gear C is driven by gear B, gear E is driven by gear D, gear G is driven by gear F, and gear H is driven by the transmission teeth 232 of the output shaft 23. Specifically, gear A is located at the upper end of gear B, gear C is located at the upper end of gear D, gear E is located at the upper end of gear F, and gear H is located at the upper end of gear G.

[0041] The above description is only a preferred embodiment of the present utility model. Therefore, all equivalent changes or modifications made to the structure, features and principles described in the claims of the present utility model patent application are included in the scope of the present utility model patent application.

Claims

1. A synchronous motor, characterized in that: include The motor body (10) has a drive shaft; The transmission mechanism (20) includes a mounting plate (21), a transmission component (22) rotatably connected to the mounting plate (21), and an output shaft (23). The mounting plate (21) is fixedly mounted on the motor body (10). The drive shaft is connected to the transmission component (22) to provide driving force for the transmission component (22). The mounting plate (21) is provided with a through hole (211) and a flange structure (212) protruding upward from the periphery of the through hole (211). The motor body (10) is provided with a clearance space (11) corresponding to the position of the through hole (211). The lower end of the output shaft (23) is provided with an annular groove (233) for the flange structure (212) to be inserted and adapted to the flange structure (212). The output shaft (23) is formed with a transmission tooth (232) that is in transmission cooperation with the transmission component (22).

2. A synchronous motor according to claim 1, characterized in that: The lower end center of the output shaft (23) is provided with a positioning part (234) that extends into the through hole (211), and the positioning part (234) is adapted to the diameter of the through hole (211).

3. A synchronous motor according to claim 1, characterized in that: The motor body (10) has two control lines (12), and the output shaft (23) has a wiring channel (235) along its axis. The control lines (12) are led out through the through hole (211) and the wiring channel (235).

4. A synchronous motor according to claim 3, characterized in that: The motor body (10) includes a stator assembly (13) and a rotor assembly. The control line (12) is electrically connected to the stator assembly (13). The stator assembly (13) has a clearance space (11) corresponding to the through hole (211). The control line (12) extends into the through hole (211) and the wiring channel (235) through the clearance space (11).

5. A synchronous motor according to claim 4, characterized in that: The motor body (10) is provided with a central channel for accommodating the rotor assembly. The mounting plate (21) is provided with a limiting strip (213) that is inserted into the central channel and is limited to the central channel in a direction perpendicular to the insertion direction. The inner wall of the central channel is provided with a limiting protrusion (14) that is anti-rotationally engaged with the limiting strip (213).

6. A synchronous motor according to claim 1, characterized in that: The motor body (10) and the mounting plate (21) are provided with a through groove near the through hole (211). One end of the through groove is connected to the through hole (211), and the other end of the through groove passes through the side of the motor body (10) and the mounting plate (21).

7. A synchronous motor according to claim 1, characterized in that: The output shaft (23) includes a central shaft (231) and a transmission gear (232), which are integrally injection molded.

8. A synchronous motor according to claim 7, characterized in that: The lower end of the transmission gear (232) is provided with a weight-reducing groove (236) and a reinforcing rib (237) connected to the outside of the central shaft (231) and the weight-reducing groove (236).

9. A synchronous motor according to any one of claims 1-8, characterized in that: The transmission assembly (22) includes a first double gear (221), a second double gear (222), a third double gear (223), and a fourth double gear (224). The first double gear (221) includes gears A and B arranged coaxially. The second double gear (222) includes gears C and D arranged coaxially. The third double gear (223) includes gears E and F arranged coaxially. The fourth double gear (224) includes gears G and H arranged coaxially. Gear A is connected to the drive shaft of the motor body (10). Gear C is connected to gear B, gear E is connected to gear D, gear G is connected to gear F, and gear H is connected to the transmission teeth (232) of the output shaft (23).

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