Low-energy-consumption two-speed fan clutch

Abstract

The low-energy-consumption two-speed fan clutch comprises an upper shell and a fastening bolt, four mounting grooves are formed in the top of the upper shell and evenly distributed in the circumferential direction, a positioning groove is formed in one side of each mounting groove, the positioning grooves and the mounting grooves form an L-shaped mounting channel, and the fastening bolt is arranged in the L-shaped mounting channel. A positioning groove is formed in the upper shell, a positioning block is slidably connected into the positioning groove, a threaded groove is formed in the side, close to the upper shell, of the positioning block, a threaded hole is formed in the surface of the upper shell and extends into the positioning groove in a penetrating mode, a protective cover is fixedly connected to the top of the positioning block, and a sealing gasket is arranged between the protective cover and the upper shell. And the fastening bolts penetrate through the threaded holes and are in threaded connection with the interiors of the threaded grooves. According to the utility model, the positioning block corresponds to the mounting groove, the positioning block is in contact with the upper shell and the upper shell is rotated, so that the positioning block enters the positioning groove, the fastening bolt is rotated and screwed into the thread groove, and the protective cover is used for protecting the connecting bolt and the nut.

Description

Technical Field

[0001] This utility model relates to the field of fan clutch technology, specifically a low-energy two-speed fan clutch. Background Technology

[0002] A fan clutch is a device that automatically adjusts the fan speed according to changes in engine temperature. It not only allows the engine to operate at the most suitable temperature, but also shortens the warm-up time and improves the engine's effective power.

[0003] According to publication number CN214367370U, a spring-buffered two-speed electromagnetic fan clutch includes an electromagnetic fan clutch comprising a main shaft and a driven plate. The driven plate is connected to the main shaft via bearings. A fan is mounted on the outer ring of the driven plate, and an iron core is mounted inside the cavity of the driven plate. The iron core is connected to the main shaft via bearings. A drive plate is mounted at the front end of the driven plate, and a friction plate fixing plate is mounted at the rear end of the drive plate. A spring-buffered device is mounted on the drive plate. This device can prevent fan breakage or premature failure of electromagnetic clutch components caused by crankshaft torsional vibration or engine vibration, and also reduces the impact on the engine front-end gear train when the fan clutch is engaged.

[0004] The aforementioned spring buffer device and other structures prevent fan breakage and reduce impact. However, after the structure is fixed and installed with nuts, the spindle and nuts are exposed to the outside environment. During use, dust or liquid can easily adhere to them, which can affect the installation and removal of the nuts and make them prone to damage. Utility Model Content

[0005] The purpose of this invention is to provide a low-energy-consumption two-speed fan clutch to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a low-energy-consumption two-speed fan clutch, comprising an upper housing and fastening bolts. The top of the upper housing has four mounting slots, which are evenly distributed circumferentially. A positioning slot is formed on one side of each mounting slot, and the positioning slot and the mounting slot form an L-shaped mounting channel. A positioning block is slidably connected inside the positioning slot. A threaded groove is formed on the side of the positioning block near the upper housing. A threaded hole is formed on the surface of the upper housing and extends through into the positioning slot. A protective cover is fixedly connected to the top of the positioning block. A sealing gasket is provided between the protective cover and the upper housing. The fastening bolts pass through the threaded hole and are threadedly connected inside the threaded groove.

[0007] As a further preferred embodiment of this technical solution, the top of the upper housing is fixedly connected with multiple heat dissipation fins, and the bottom surface of the upper housing is fixedly connected with four connecting plates, with a mounting hole in the middle of each connecting plate.

[0008] As a further preferred embodiment of this technical solution, a pad is provided at the bottom of the upper housing, a heat dissipation plate is provided at the bottom of the pad, and a screw is threadedly connected between the heat dissipation plate and the upper housing.

[0009] As a further preferred embodiment of this technical solution, a main shaft is provided inside the upper housing, a flange is fixedly connected to the bottom of the main shaft, a connecting screw is fixedly connected to the top of the main shaft, and a nut is threaded onto the surface of the connecting screw.

[0010] As a further preferred embodiment of this technical solution, a lower housing is provided on the surface of the spindle, an electromagnetic coil is provided on the top of the lower housing, a bearing is provided inside the lower housing, an O-ring is provided between the bearing and the lower housing, a connecting wire is provided at the bottom of the electromagnetic coil, the connecting wire passes through the lower housing and is fixedly connected to an interface at one end.

[0011] As a further preferred embodiment of this technical solution, a driven plate is provided on the top of the lower housing, and four mounting holes are provided on the surface of the driven plate. The mounting holes are located on the same axis and are compatible in shape and size. A groove is provided on the bottom of the driven plate, and the lower housing is engaged inside the groove. A bearing is provided between the driven plate and the main shaft.

[0012] As a further preferred embodiment of this technical solution, the surface of the spindle is provided with a suction plate, the top of the suction plate is provided with a flat spring plate, a screw is threadedly connected between the flat spring plate and the suction plate, and the top of the flat spring plate is provided with a drive plate.

[0013] This utility model provides a low-energy-consumption two-speed fan clutch, which has the following beneficial effects:

[0014] (1) This utility model uses the positioning block and the mounting groove to correspond, push the protective cover downward, wait for the positioning block to contact the upper shell and rotate the upper shell so that the positioning block enters the positioning groove. At the same time, the thread groove and the thread hole correspond, rotate the fastening bolt, and rotate in the thread hole and screw it into the thread groove, thereby fixing the protective cover on the upper shell to protect the connecting bolts and nuts and extend the service life.

[0015] (2) This utility model is connected to an external power supply device through an interface and connecting line. When the water temperature is low, the main shaft drives the active disk and the suction disk to rotate, and the driven disk embedded with a permanent magnet attracts the suction disk, thereby causing the driven disk and the fan installed on the lower housing to rotate at low speed. When the water temperature is high, when the electromagnetic coil is energized, a magnetic field is formed around the electromagnetic coil, and the magnetic force causes the suction disk and the driven disk to attract, thereby driving the fan to rotate at full speed, realizing two-stage speed change of the fan and reducing energy consumption. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 This is a cross-sectional structural diagram of the present invention;

[0018] Figure 3 This is a schematic diagram of the cross-sectional structure of the driven disk of this utility model;

[0019] Figure 4 This is a schematic diagram of the unfolded structure of the upper shell and protective cover of this utility model;

[0020] Figure 5 For the present utility model Figure 4 Enlarged schematic diagram of the structure at point A in the middle;

[0021] Figure 6 This is a schematic diagram of the suction cup structure of this utility model.

[0022] In the diagram: 1. Upper housing; 2. Mounting groove; 3. Positioning groove; 4. Positioning block; 5. Threaded groove; 6. Threaded hole; 7. Protective cover; 8. Sealing gasket; 9. Fastening bolt; 10. Heat dissipation fins; 11. Connecting plate; 12. Mounting hole one; 13. Pad; 14. Heat dissipation plate; 15. Screw one; 16. Spindle; 17. Flange; 18. Connecting screw; 19. Nut; 20. Lower housing; 21. Electromagnetic coil; 22. Bearing one; 23. O-ring; 24. Connecting wire; 25. Interface; 26. Driven disc; 27. Mounting hole two; 28. Groove; 29. ​​Bearing two; 30. Suction disc; 31. Screw two; 32. Flat spring plate; 33. Driving disc. Detailed Implementation

[0023] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0024] This utility model provides a technical solution: such as Figures 1 to 6 As shown in this embodiment, a low-energy two-speed fan clutch includes an upper housing 1 and fastening bolts 9. The top of the upper housing 1 has four mounting slots 2, which are evenly distributed circumferentially. A positioning slot 3 is provided on one side of the mounting slot 2. The positioning slot 3 and the mounting slot 2 form an L-shaped mounting channel. A positioning block 4 is slidably connected inside the positioning slot 3. A threaded groove 5 is provided on the side of the positioning block 4 near the upper housing 1. A threaded hole 6 is provided on the surface of the upper housing 1 and extends through into the positioning slot 3. A protective cover 7 is fixedly connected to the top of the positioning block 4. A sealing gasket 8 is provided between the protective cover 7 and the upper housing 1. The fastening bolts 9 pass through the threaded hole 6 and are threadedly connected inside the threaded groove 5.

[0025] Align the positioning block 4 with the mounting groove 2, push the protective cover 7 downwards, and rotate the upper housing 1 after the positioning block 4 contacts the upper housing 1. This allows the positioning block 4 to enter the positioning groove 3, while the threaded groove 5 and threaded hole 6 align. Rotate the fastening bolt 9 so that it rotates in the threaded hole 6 and is screwed into the threaded groove 5, thereby fixing the protective cover 7 onto the upper housing 1. This protects the connecting bolts and nuts 19, extending their service life. A sealing gasket 8 is provided between the protective cover 7 and the upper housing 1 to ensure the sealing of the connection and prevent external dust or liquid from entering.

[0026] Multiple heat dissipation fins 10 are fixedly connected to the top of the upper housing 1, and four connecting plates 11 are fixedly connected to the bottom surface of the upper housing 1. A mounting hole 12 is provided in the middle of the connecting plate 11.

[0027] By providing multiple heat dissipation fins 10 on the upper housing 1, the internal heat is dissipated through the heat dissipation fins 10 when the spindle 16 is working, so as to ensure that it is at a normal temperature and extend the service life of the parts.

[0028] A connecting plate 11 is provided on the upper housing 1, and mounting holes 12 and 27 are aligned. In case of bearing damage, the positions of the connecting plate 11 and the lower housing 20 can be fixed by screws to ensure the normal use of the clutch.

[0029] A pad 13 is provided at the bottom of the upper housing 1, and a heat sink 14 is provided at the bottom of the pad 13. A screw 15 is threadedly connected between the heat sink 14 and the upper housing 1.

[0030] The upper housing 1 has a main shaft 16 inside. The bottom of the main shaft 16 is fixedly connected to a flange 17, and the top of the main shaft 16 is fixedly connected to a connecting screw 18. The surface of the connecting screw 18 is threaded with a nut 19.

[0031] The surface of the spindle 16 is provided with a lower housing 20, the top of the lower housing 20 is provided with an electromagnetic coil 21, the interior of the lower housing 20 is provided with a bearing 22, an O-ring 23 is provided between the bearing 22 and the lower housing 20, and a connecting wire 24 is provided at the bottom of the electromagnetic coil 21. The connecting wire 24 passes through the lower housing 20 and is fixedly connected to an interface 25 at one end.

[0032] The lower housing 20 has a driven plate 26 on its top. The surface of the driven plate 26 has four mounting holes 27. The mounting holes 27 and the mounting holes 12 are located on the same axis and are compatible in shape and size. The bottom of the driven plate 26 has a groove 28. The lower housing 20 is engaged inside the groove 28. A bearing 29 is provided between the driven plate 26 and the main shaft 16.

[0033] A suction plate 30 is provided on the surface of the spindle 16, and a flat spring plate 32 is provided on the top of the suction plate 30. A screw 31 is threadedly connected between the flat spring plate 32 and the suction plate 30, and a drive plate 33 is provided on the top of the flat spring plate 32.

[0034] Connected to an external power supply via interface 25 and connecting cable 24, when the water temperature is low, the main shaft 16 drives the active disc 33 and the suction disc 30 to rotate, and the driven disc 26 embedded with a permanent magnet attracts the suction disc 30, thereby causing the driven disc 26 and the fan mounted on the lower housing 20 to rotate at low speed. When the water temperature is high, when the electromagnetic coil 21 is energized, a magnetic field is formed around the electromagnetic coil 21, and the magnetic field force causes the suction disc 30 and the driven disc 26 to attract, thereby driving the fan to rotate at full speed, realizing two-stage speed change of the fan and reducing energy consumption.

[0035] This utility model provides a low-energy-consumption two-speed fan clutch, the specific working principle of which is as follows:

[0036] In use, align the positioning block 4 with the mounting slot 2, push the protective cover 7 downwards, and rotate the upper housing 1 after the positioning block 4 contacts the upper housing 1. This allows the positioning block 4 to enter the positioning slot 3, while the threaded slot 5 and threaded hole 6 align. Rotate the fastening bolt 9, which rotates in the threaded hole 6 and screws into the threaded slot 5, thus fixing the protective cover 7 onto the upper housing 1. When the engine starts working and the water temperature is low, the main shaft 16 drives the active disc 33 and the suction disc 30 to rotate, and attracts the suction disc 30 through the driven disc 26 embedded with a permanent magnet. This causes the driven disc 26 and the fan mounted on the lower housing 20 to rotate at low speed. When the water temperature is high, when the electromagnetic coil 21 is energized, a magnetic field is formed around the electromagnetic coil 21, and the magnetic force causes the suction disc 30 and the driven disc 26 to attract, thereby driving the fan to rotate at full speed.

[0037] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A low energy two speed fan clutch comprising an upper housing (1) and a fastening bolt (9), characterized in that: The top of the upper shell (1) is provided with four mounting grooves (2), which are evenly distributed circumferentially, one side of the mounting groove (2) is provided with a positioning groove (3), the positioning groove (3) and the mounting groove (2) form an L-shaped mounting channel, the inside of the positioning groove (3) is slidably connected with a positioning block (4), one side of the positioning block (4) close to the upper shell (1) is provided with a threaded groove (5), the surface of the upper shell (1) is provided with a threaded hole (6) and extends through the threaded hole (6) into the positioning groove (3), the top of the positioning block (4) is fixedly connected with a protective cover (7), a sealing gasket (8) is arranged between the protective cover (7) and the upper shell (1), the fastening bolt (9) penetrates the threaded hole (6) and is threadedly connected in the inside of the threaded groove (5).

2. A low energy two speed fan clutch as set forth in claim 1 wherein: The top of the upper shell (1) is fixedly connected with a plurality of heat dissipation fins (10), the surface of the upper shell (1) is fixedly connected with four connecting plates (11), the middle of the connecting plate (11) is provided with a mounting hole one (12).

3. A low energy two speed fan clutch as set forth in claim 1 wherein: The bottom of the upper shell (1) is provided with a backing plate (13), the bottom of the backing plate (13) is provided with a heat dissipation disc (14), the heat dissipation disc (14) and the upper shell (1) are threadedly connected with a screw one (15).

4. A low energy two speed fan clutch as set forth in claim 1 wherein: The inside of the upper shell (1) is provided with a main shaft (16), the bottom of the main shaft (16) is fixedly connected with a flange (17), the top of the main shaft (16) is fixedly connected with a connecting screw rod (18), the surface of the connecting screw rod (18) is threadedly connected with a nut (19).

5. A low energy two speed fan clutch as set forth in claim 4 wherein: The surface of the main shaft (16) is provided with a lower shell (20), the top of the lower shell (20) is provided with an electromagnetic coil (21), the inside of the lower shell (20) is provided with a bearing one (22), the bearing one (22) and the lower shell (20) are provided with an O-ring (23), the bottom of the electromagnetic coil (21) is provided with a connecting wire (24), the connecting wire (24) penetrates the lower shell (20) and is fixedly connected with a connector (25) at one end.

6. A low energy two speed fan clutch as set forth in claim 5 wherein: The top of the lower shell (20) is provided with a driven disc (26), the surface of the driven disc (26) is provided with four mounting holes two (27), the mounting hole two (27) and the mounting hole one (12) are located on the same axis and are adapted in shape and size, the bottom of the driven disc (26) is provided with a groove (28), the lower shell (20) is engaged in the inside of the groove (28), the driven disc (26) and the main shaft (16) are provided with a bearing two (29).

7. A low energy two speed fan clutch as set forth in claim 4 wherein: The surface of the main shaft (16) is provided with an attraction disc (30), the top of the attraction disc (30) is provided with a flat spring sheet (32), the flat spring sheet (32) and the attraction disc (30) are threadedly connected with a screw two (31), the top of the flat spring sheet (32) is provided with a driving disc (33).

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