Electromagnetic control type clutch
By using a ratchet and spring protection mechanism, the problem of dust and grit adhering to the electromagnetic clutch and spring rusting in humid environments is solved, thus achieving dust and rust prevention and stable control of the electromagnetic clutch and extending its service life.
Patent Information
- Application Number
- CN202423018510.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-09
- Publication Date
- 2025-10-28
- Estimated Expiration
- 2034-12-09
AI Technical Summary
Existing electromagnetic clutches are prone to damage in humid environments due to dust and grit buildup and rust on spring components, leading to a shortened ratchet lifespan and inability to start normally.
A ratchet protection mechanism and a spring protection mechanism were designed, including a protective ring, a movable ring, a quick-release mechanism, and a semi-circular ring retainer. The protective ring and the movable ring work together to prevent dust and sand from entering the environment. A sponge pad is used to reduce gaps, and the semi-circular ring retainer wraps around the spring to prevent moisture from getting in.
It improves the service life of the ratchet, prevents the spring from rusting, ensures stable and long-term control of the pawl locking and releasing, and extends the overall service life of the electromagnetic clutch.
Smart Images
Figure CN223483224U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of washing machine technology, specifically to an electromagnetically controlled clutch. Background Technology
[0002] The electromagnetic clutch of a washing machine is an important component, located between the motor and the drive shaft. Its main function is to control the washing machine's rotation speed and the movement of the agitator, thereby protecting the motor and drive shaft from overload damage. The electromagnetic clutch works by using electromagnetic force or spring force to control the engagement and disengagement of the clutch, thus enabling the washing tub to rotate forward and backward and brake. When the washing machine needs to start or stop, the electromagnetic clutch controls the rotation and stopping of the washing tub through the attraction and release of the electromagnet. However, the existing technology has the following problems:
[0003] Because existing electromagnetic clutches use the engagement and disengagement of electromagnets to control the pawl to lock and release the ratchet, the pawl needs to directly engage with the ratchet wheel. Therefore, the entire ratchet wheel must be exposed. Since the electromagnetic clutch is installed at the bottom of the washing machine's impeller and operates in a humid environment for extended periods, dust and grit easily accumulate on the ratchet wheel, affecting its lifespan. Simultaneously, the spring components controlling the pawl are prone to rusting in the humid environment. Consequently, after prolonged use, the spring components may fail to properly engage the pawl with the ratchet wheel to lock the pulley, preventing the clutch from starting properly and shortening its lifespan. Utility Model Content
[0004] This invention provides an electromagnetically controlled clutch to solve the problems mentioned in the background section.
[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:
[0006] An electromagnetically controlled clutch includes an electromagnetically controlled clutch housing, a ratchet protection mechanism located at the bottom of the clutch housing, a spring protection mechanism located on the left side of the clutch housing, an L-shaped clutch lever located below the spring protection mechanism, a ratchet fixedly mounted at the bottom of the clutch housing, a pulley fixedly mounted at the bottom of the ratchet, the ratchet protection mechanism including a first protective ring fixedly mounted at the bottom of the clutch housing, a second protective ring located below the first protective ring, quick-release mechanisms located on the front and rear sides of both the first and second protective rings, the pulley having a diameter smaller than the inner diameter of the second protective ring, and the pulley located below the second protective ring.
[0007] A further improvement of the present invention is that: a second snap-fit ring is provided at the top of the second protective ring, a movable ring is slidably installed in the inner cavity of the second snap-fit ring, a first snap-fit ring is provided at the bottom of the first protective ring, and the top of the movable ring is snapped into the inner cavity of the first snap-fit ring.
[0008] A further improvement of this utility model is that: a clutch rod through hole is provided on the left side of the movable ring, which extends vertically and horizontally; the horizontal part of the L-shaped clutch rod passes through the clutch rod through hole to the inner ring of the movable ring and is located on the left side of the ratchet.
[0009] A further improvement of this utility model is that: both quick-release mechanisms include a first docking plate and a second docking plate. The first docking plates are fixedly installed on the front and rear sides of the first protective ring, and the second docking plates are fixedly installed on the front and rear sides of the second protective ring. Both first docking plates have through holes extending vertically. The tops of the second docking plates are fixedly installed with rods, and the tops of the rods extend through the two holes to the tops of the first docking plates.
[0010] A further improvement of this utility model is that: each of the two mating plates is provided with a threaded mating hole that extends to the inner ring of the insertion hole on the side away from the protective ring, and a threaded rod is threadedly installed on the inner ring of the threaded mating hole. A knob is fixedly installed on the end of the threaded rod away from the mating plate. Each of the two insertion rods is provided with a threaded locking hole that extends from front to back, and the two threaded locking holes are respectively aligned with the two threaded mating holes from front to back.
[0011] A further improvement of this utility model is that: a clutch spring is provided above the vertical part of the L-shaped clutch lever; the spring protection mechanism includes two semi-circular ring plates, which are respectively located on the front and rear sides of the clutch lever spring; a sponge pad is provided on the opposite surface of the two semi-circular ring plates; the two sponge pads overlap with the front and rear sides of the clutch lever spring; extension plates are fixedly installed on the left and right sides of the two semi-circular ring plates; the two front extension plates are provided with through slots; a plate is fixedly installed on the front side of the two rear extension plates; a rubber ring is fixedly installed on the outer wall of the two plates; the two plates are respectively engaged with the two slots; and a pull ring is fixedly installed on the opposite back sides of the two semi-circular ring plates.
[0012] Due to the adoption of the above technical solution, the technological progress achieved by this utility model compared to the prior art is as follows:
[0013] 1. This utility model provides an electromagnetically controlled clutch. Through the cooperation between the first protective ring, the second protective ring, and the moving ring, the ratchet can effectively protect the pawl at one end of the clutch lever from dust and gravel without affecting its control, thus improving the service life of the electromagnetically controlled clutch ratchet.
[0014] 2. This utility model provides an electromagnetically controlled clutch. Through the cooperation between the semi-circular ring plate, the extension plate, the slot, the plate, and the clutch lever spring, the spring that needs to control the clutch lever when exposed to air can be effectively wrapped and protected, preventing the spring from getting damp and rusting after long-term use. This allows the clutch lever of the electromagnetically controlled clutch to stably and permanently control the pawl to lock and release the ratchet. Attached Figure Description
[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0016] Figure 2 This is a schematic diagram of the ratchet protection mechanism of this utility model.
[0017] Figure 3 This is an exploded view of the protective ring one and the protective ring two of the present invention.
[0018] Figure 4 This is a schematic diagram of the quick-release mechanism of the present invention.
[0019] Figure 5 This is a schematic diagram of the spring protection mechanism of this utility model.
[0020] In the diagram: 1. Electromagnetically controlled clutch housing; 11. Ratchet; 12. Pulley; 13. Clutch lever spring; 2. Ratchet protection mechanism; 21. Protective ring one; 211. Snap-fit ring one; 22. Protective ring two; 221. Snap-fit ring two; 222. Moving ring; 223. Clutch lever through hole; 23. Quick release mechanism; 231. Connecting plate one; 232. Insertion hole; 233. Connecting plate two; 234. Threaded connecting hole; 235. Threaded rod; 236. Knob; 237. Insert rod; 238. Threaded locking hole; 3. L-shaped clutch lever; 4. Spring protection mechanism; 41. Semi-circular ring retaining plate; 42. Extension plate; 43. Slot; 44. Retaining plate; 45. Rubber ring; 46. Pull ring. Detailed Implementation
[0021] To make the technical means, creative features, objectives and effects of this utility model easier to understand
[0022] Understood. The present invention will now be further described in conjunction with specific implementation methods.
[0023] like Figure 1 , Figure 2, Figure 3 As shown, this utility model provides an electromagnetically controlled clutch, including an electromagnetically controlled clutch housing 1. A ratchet protection mechanism 2 is provided below the electromagnetically controlled clutch housing 1, a spring protection mechanism 4 is provided on the left side of the electromagnetically controlled clutch housing 1, an L-shaped clutch lever 3 is provided below the spring protection mechanism 4, a ratchet 11 is fixedly installed at the bottom end of the electromagnetically controlled clutch housing 1, and a pulley 12 is fixedly installed at the bottom of the ratchet 11. The ratchet protection mechanism 2 includes a first protective ring 21, which is fixedly installed at the bottom of the electromagnetically controlled clutch housing 1. A second protective ring 22 is provided below the first protective ring 21. Quick-release mechanisms 23 are provided on both the front and rear sides of the second protective ring 22. The diameter of the pulley 12 is smaller than the inner diameter of the second protective ring 22. The pulley 12 is located below the second protective ring 22. A snap-fit ring 221 is provided at the top of the second protective ring 22. A movable ring 222 is slidably installed in the inner cavity of the snap-fit ring 221. A snap-fit ring 211 is provided at the bottom of the first protective ring 21. The top of the movable ring 222 is snapped into the inner cavity of the snap-fit ring 211. A clutch rod through hole 223 is provided on the left side of the movable ring 222. The L-shaped clutch rod 3 passes through the clutch rod through hole 223 to the inner ring of the movable ring 222 at a horizontal position and is located on the left side of the ratchet 11.
[0024] By merging the second protective ring 22 and the first protective ring 21, the movable ring 222 can rotate freely within the snap ring 221 at the top of the second protective ring 22 and the snap ring 211 at the bottom of the first protective ring 21. This does not affect the clutch rod passing through the clutch rod through hole 223, which drives the pawl to control the ratchet 11 on the inner ring of the first protective ring 21. At the same time, the smaller clutch rod through hole 223, together with the sealing protection of the ratchet of the first protective ring 21 and the second protective ring 22, can also prevent most of the dust and grit from affecting the ratchet 11, thus improving the service life of the ratchet 11. The gap between the second protective ring 22 and the pulley 12 is small, and the dust and grit will fall downwards, so they will not enter the inner ring of the second protective ring 22 through the gap.
[0025] like Figure 4As shown, both quick-release mechanisms 23 include a first docking plate 231 and a second docking plate 233. The first docking plate 231 is fixedly installed on the front and rear sides of the first protective ring 21, and the second docking plate 233 is fixedly installed on the front and rear sides of the second protective ring 22. Both first docking plates 231 have through holes 232. The top of both second docking plates 233 is fixedly installed with a rod 237. The top of the two rods 237 passes through the two holes 232 to the two docking plates 233. Above the connecting plate 231, each of the two connecting plates 231 has a threaded connecting hole 234 that extends to the inner ring of the insertion hole 232 on the side away from the protective ring 21. The inner ring of the threaded connecting hole 234 is threaded with a threaded rod 235. A knob 236 is fixedly installed at the end of the threaded rod 235 away from the connecting plate 231. Each of the two insertion rods 237 has a threaded locking hole 238 that extends from front to back. The two threaded locking holes 238 are aligned with the two threaded connecting holes 234 from front to back, respectively.
[0026] When the ratchet 11 needs maintenance, simply rotate the threaded rod 235 inside the threaded mating hole 234 using the knob 236 to separate the threaded rod 235 from the threaded locking hole 238 of the insert rod 237, releasing the restriction on the insert rod 237. This allows the entire protective ring 22, along with the movable ring 222 and the insert rod 237 at the top of the two mating plates 233, to be disengaged downwards from the protective ring 21. Since the diameter of the pulley 12 is smaller than the inner diameter of the protective ring 22, the entire protective ring 22 can be directly removed, exposing the ratchet 11 for easy maintenance and installation. Simply align the two insert rods 237 with the two insert holes 232, align the clutch rod through hole 223 of the movable ring 222 with the L-shaped clutch rod 3, and align the movable ring 222 as a whole with the snap ring 211 at the bottom of the protective ring 21 and snap it upwards. When the movable ring 222 is fully inserted into the snap ring 211, the threaded locking hole 238 will be aligned with the threaded mating hole 234. Then, the knob 236 can be reversed to drive the threaded rod 235 to be threadedly connected to the threaded locking hole 238, and the insert rods 237 will be repositioned and fixed, so that the protective ring 22 and the protective ring 21 are installed.
[0027] like Figure 5As shown, a clutch spring 13 is provided above the vertical part of the L-shaped clutch lever 3. The spring protection mechanism 4 includes two semi-circular ring plates 41. The two semi-circular ring plates 41 are located on the front and rear sides of the clutch spring 13, respectively. Sponge pads are provided on the opposite sides of the two semi-circular ring plates 41. The two sponge pads overlap with the front and rear sides of the clutch spring 13, respectively. Extension plates 42 are fixedly installed on the left and right sides of the two semi-circular ring plates 41. The two front extension plates 42 are provided with slots 43 that pass through the front and rear. The front sides of the two rear extension plates 42 are fixedly installed with plates 44. Rubber rings 45 are fixedly installed on the outer walls of the two plates 44. The two plates 44 are respectively engaged with the two slots 43. Pull rings 46 are fixedly installed on the opposite sides of the two semi-circular ring plates 41.
[0028] The clutch lever spring 13, which is used to control the L-shaped clutch lever 3, can be protected by two combined semi-circular ring plates 41. The sponge pads on the opposite sides of the two semi-circular ring plates 41 are used to fit the clutch lever spring 13 to reduce gaps and prevent the clutch lever spring 13 from getting damp. At the same time, the installation can be completed by aligning the plates 44 on the front side of the extension plates 42 on the left and right sides of the rear semi-circular ring plate 41 with the slots 43 opened on the extension plates 42 on the left and right sides of the front semi-circular ring plate 41. The rubber rings 45 on the outer wall of the plates 44 improve the stability after insertion. When the clutch lever spring 13 needs to be inspected, the pull rings 46 on the back of the two semi-circular ring plates 41 can be pulled to separate the two semi-circular ring plates 41 and expose the clutch lever spring 13.
[0029] The working principle of this electromagnetically controlled clutch will be explained in detail below.
[0030] like Figure 1-5As shown, by merging the second protective ring 22 and the first protective ring 21, the movable ring 222 can rotate freely within the snap ring 221 at the top of the second protective ring 22 and the snap ring 211 at the bottom of the first protective ring 21. This does not affect the clutch rod passing through the clutch rod through hole 223, which drives the pawl to control the ratchet 11 on the inner ring of the first protective ring 21. At the same time, the smaller clutch rod through hole 223, together with the sealing protection of the ratchet by the first protective ring 21 and the second protective ring 22, can also prevent most of the dust and sand particles from affecting the ratchet 11, thus improving the service life of the ratchet 11. In addition, when the ratchet 11 needs to be repaired, it is only necessary to insert the threaded rod in the threaded mating hole 234. Rotating knob 236 separates the threaded rod 235 from the threaded locking hole 238 of the insert rod 237, releasing the restriction on the insert rod 237. This allows the entire protective ring 22, along with the movable ring 222 and the insert rods 237 on the top of the two mating plates 233, to detach downwards from the protective ring 21. Because the diameter of the pulley 12 is smaller than the inner diameter of the protective ring 22, the entire protective ring 222 can be directly removed, exposing the ratchet 11 for easy maintenance. During installation, simply align the two insert rods 237 with the two insertion holes 232, align the clutch rod through hole 223 of the movable ring 222 with the L-shaped clutch rod 3, and then... When ring 222 is fully aligned with the snap-fit ring 211 at the bottom of protective ring 21, it snaps upwards, so that when the movable ring 222 is fully inside the snap-fit ring 211, the threaded locking hole 238 aligns with the threaded mating hole 234. Then, the knob 236 can be reversed to drive the threaded rod 235 to connect with the threaded locking hole 238, thus re-limiting and fixing the insertion rod 237. This completes the installation of protective ring 22 and protective ring 21. The gap between protective ring 22 and pulley 12 is small, and dust and grit will fall downwards, preventing them from entering the inner ring of protective ring 22. The clutch spring 13, used to control the L-shaped clutch lever 3, can utilize two merged semicircles. The ring plate 41 provides protection, and the sponge pads on the opposite sides of the two semi-circular ring plates 41 are used to reduce gaps with the clutch lever spring 13, thus preventing problems such as moisture on the clutch lever spring 13. At the same time, the installation can be completed by aligning the plate 44 on the front side of the extension plate 42 on the left and right sides of the rear semi-circular ring plate 41 with the slot 43 opened on the extension plate 42 on the left and right sides of the front semi-circular ring plate 41 and inserting it. The rubber ring 45 on the outer wall of the plate 44 improves the stability after insertion. When the clutch lever spring 13 needs to be inspected, simply pull the pull ring 46 on the back side of the two semi-circular ring plates 41 to separate the two semi-circular ring plates 41 and expose the clutch lever spring 13.
[0031] The present invention has been described in detail above. However, modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, any modifications or improvements that do not depart from the spirit of the present invention are within the protection scope of the present invention.
Claims
1. An electromagnetically controlled clutch, comprising an electromagnetically controlled clutch housing (1), characterized in that: A ratchet protection mechanism (2) is provided below the electromagnetic control clutch housing (1). A spring protection mechanism (4) is provided on the left side of the electromagnetic control clutch housing (1). An L-shaped clutch rod (3) is provided below the spring protection mechanism (4). A ratchet (11) is fixedly installed at the bottom of the electromagnetic control clutch housing (1). A pulley (12) is fixedly installed at the bottom of the ratchet (11). The ratchet protection mechanism (2) includes a first protection ring (21). The first protection ring (21) is fixedly installed at the bottom of the electromagnetic control clutch housing (1). A second protection ring (22) is provided below the first protection ring (21). Quick release mechanisms (23) are provided on the front and rear sides of the first protection ring (21) and the second protection ring (22). The diameter of the pulley (12) is smaller than the inner diameter of the second protection ring (22). The pulley (12) is located below the second protection ring (22).
2. The electromagnetically controlled clutch according to claim 1, characterized in that: The top of the second protective ring (22) is provided with a second snap ring (221), and a movable ring (222) is slidably installed in the inner cavity of the second snap ring (221). The bottom of the first protective ring (21) is provided with a first snap ring (211), and the top of the movable ring (222) is snapped into the inner cavity of the first snap ring (211).
3. An electromagnetically controlled clutch according to claim 2, characterized in that: The movable ring (222) has a clutch rod through hole (223) that runs vertically and horizontally on the left side. The L-shaped clutch rod (3) passes through the clutch rod through hole (223) to the inner ring of the movable ring (222) at the horizontal position and is located on the left side of the ratchet (11).
4. The electromagnetically controlled clutch according to claim 1, characterized in that: Both quick-release mechanisms (23) include a first docking plate (231) and a second docking plate (233). The first docking plates (231) are fixedly installed on the front and rear sides of the first protective ring (21), and the second docking plates (233) are fixedly installed on the front and rear sides of the second protective ring (22). The first docking plates (231) are provided with through holes (232) that run vertically through each other. The tops of the second docking plates (233) are fixedly installed with rods (237). The tops of the two rods (237) pass through the two holes (232) to the top of the first docking plates (231).
5. An electromagnetically controlled clutch according to claim 4, characterized in that: Both of the two mating plates (231) have threaded mating holes (234) that extend to the inner ring of the insertion hole (232) on the side away from the protective ring (21). The inner ring of the threaded mating hole (234) is threaded with a threaded rod (235). A knob (236) is fixedly installed at the end of the threaded rod (235) away from the mating plate (231). Both of the two insertion rods (237) have threaded locking holes (238) that extend from front to back. The two threaded locking holes (238) are aligned with the two threaded mating holes (234) from front to back.
6. An electromagnetically controlled clutch according to claim 1, characterized in that: A clutch spring (13) is provided above the vertical part of the L-shaped clutch lever (3). The spring protection mechanism (4) includes two semi-circular ring plates (41). The two semi-circular ring plates (41) are located on the front and rear sides of the clutch spring (13), and sponge pads are provided on the opposite sides of the two semi-circular ring plates (41). The two sponge pads overlap with the front and rear sides of the clutch spring (13). Extension plates (42) are fixedly installed on the left and right sides of the two semi-circular ring plates (41). The two front extension plates (42) are provided with slots (43) that pass through the front and rear. The front sides of the two rear extension plates (42) are fixedly installed with plates (44). Rubber rings (45) are fixedly installed on the outer walls of the two plates (44). The two plates (44) are respectively engaged with the two slots (43). Pull rings (46) are fixedly installed on the opposite sides of the two semi-circular ring plates (41).