Electromagnetic retarding clutch

Abstract

The electromagnetic retarding clutch comprises a shell body with a first space, one end of the shell body is provided with an impeller, the axis of the impeller is a first axis, the extension direction of the impeller is a first direction, and the impeller can rotate around the first axis; the driving mechanism is used for driving the impeller to rotate and comprises a driving disc and a first driving assembly, and the driving disc rotates to drive the first driving assembly and the impeller to rotate; the device further comprises a belt pulley set, the belt pulley set drives the driving mechanism to rotate, the belt pulley set comprises a belt inner wheel and a belt outer wheel, a magnetic isolation ring piece is arranged for connecting the belt inner wheel and the belt outer wheel, and a first gap is formed between the magnetic isolation ring piece and the driving disc. According to the scheme, the magnetic isolation ring piece is arranged to connect the belt inner wheel and the belt outer wheel, the first gap is formed between the magnetic isolation ring piece and the driving disc and does not make contact with the driving disc, the situation that the connecting position of the magnetic isolation ring piece and the belt wheel set is abraded due to contact of the magnetic isolation ring piece and the driving disc is avoided, and the situation that the connecting strength of the magnetic isolation ring piece is reduced is avoided; the belt pulley set is not easy to break and can be used for a long time.

Description

Technical Field

[0001] The present application relates to the technical field of vehicle water pumps or fans, and in particular to an electromagnetic retarding clutch. Background Art

[0002] Water pumps are common equipment in the fields of automobiles, industrial equipment, and construction. Internal combustion engines used in automobiles, tractors, construction machinery, and other mechanical engineering are equipped with cooling systems, and water pumps provide cooling water for the engines. Speed-controlled water pumps can make the impeller of the water pump rotate when the engine does not need to cool down, allowing the engine to heat up to the set operating temperature more quickly, thereby ensuring that the motor vehicle provides fuel economy and reduces harmful emissions without affecting the normal operation of the vehicle;

[0003] In the prior art, the inner belt wheel and the outer belt wheel in the pulley assembly are connected by several ribs, and the connection strength of the ribs is low, and they are prone to breakage as the pulley assembly rotates. Summary of the invention

[0004] In view of the above-mentioned defects or deficiencies in the prior art, the present application aims to provide an electromagnetic retarding clutch, comprising:

[0005] A shell body, wherein a first space is provided in the shell body;

[0006] An impeller, the impeller being arranged at one end of the housing body, the axis of the impeller being a first axis, the extending direction of the first axis being a first direction, and the impeller being rotatable around the first axis;

[0007] A driving mechanism, the driving mechanism comprising a driving disc and a first driving assembly, wherein the driving disc rotates to drive the first driving assembly and the impeller to rotate;

[0008] A pulley group is used to drive the driving mechanism to rotate, and the pulley group includes an inner pulley mounted on the outer wall of the first driving component, an outer pulley is mounted on the outer side of the inner pulley, a magnetic isolation ring is provided to connect the inner pulley and the outer pulley, and a first gap is formed between the magnetic isolation ring close to the driving disc and the driving disc.

[0009] According to the technical solution provided in the embodiment of the present application, the first drive assembly includes a first drive shaft, a first through hole is provided in the middle of the drive disk, one end of the first drive shaft passes through the first through hole and is connected to the impeller away from the drive disk side, and the rotation of the drive disk drives the first drive shaft and the impeller to rotate synchronously.

[0010] According to the technical solution provided in the embodiment of the present application, a second sleeve is provided on the outer wall of the first drive shaft between the drive disk and the impeller along the first direction, and the second sleeve is rotatably connected to the first drive shaft; the inner pulley of the belt is fixedly connected to the second sleeve.

[0011] According to the technical solution provided in the embodiment of the present application, a third sleeve is provided on the outer wall of the second sleeve away from the driving disc end, the third sleeve is rotatably connected to the second sleeve, and the third sleeve is fixedly connected to the outer shell body.

[0012] According to the technical solution provided in the embodiment of the present application, the pulley group is provided with a vortex disk away from the impeller end, and the vortex disk is fixedly connected to the belt outer pulley, and the rotation of the belt outer pulley drives the vortex disk to rotate synchronously.

[0013] According to the technical solution provided in the embodiment of the present application, a second space is further provided between the inner belt pulley, the outer belt pulley and the magnetic isolation ring, and a coil is further provided on the outside of the inner belt pulley in the second space. The coil is externally connected to a power supply, and the coil is energized to generate a magnetic field that drives the drive disk to engage with the pulley group, so that the pulley group drives the drive mechanism to rotate.

[0014] According to the technical solution provided in the embodiment of the present application, a magnet is provided on the side of the drive disk close to the eddy current disk. When the coil is powered off and the drive disk is separated from the pulley assembly, the eddy current disk rotates and generates eddy current force with the magnet, driving the drive mechanism to rotate.

[0015] According to the technical solution provided in the embodiment of the present application, a second groove is provided on the driving disk close to the magnetic isolation ring, the opening of the second groove is toward the magnetic isolation ring, and the projection of the magnetic isolation ring along the first direction toward the driving disk has an overlapping surface with the second groove, and the magnetic force bypasses the second groove.

[0016] According to the technical solution provided in the embodiment of the present application, a seal is provided on the first drive shaft near the impeller end sleeve, and a third groove is provided on the outer shell body near the impeller side. The seal is embedded in the third groove to prevent dust or water from entering the drive mechanism.

[0017] In summary, the present application proposes an electromagnetic slow-speed clutch, comprising an outer shell body having a first space, an impeller being arranged at one end of the outer shell body, the impeller axis being a first axis extending in a first direction, and the impeller can rotate along the first axis; a driving mechanism for driving the impeller to rotate is also arranged in the first space, the driving mechanism comprising a driving disk and a first driving component, the rotation of the driving disk drives the first driving component and the impeller to rotate; it also comprises a pulley group, the pulley group driving mechanism rotates, the pulley group comprises an inner pulley and an outer pulley, a magnetic isolation ring is arranged to connect the inner pulley and the outer pulley, and a first gap is arranged between the magnetic isolation ring and the driving disk; the present scheme arranges a magnetic isolation ring to connect the inner pulley and the outer pulley, and there is a first gap between the magnetic isolation ring and the driving disk without contact, so as to avoid the contact between the magnetic isolation ring and the driving disk, resulting in wear at the connection between the magnetic isolation ring and the pulley group, and to avoid reducing the connection strength of the magnetic isolation ring, so that the pulley group is not easy to break and can be used for a long time. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A schematic cross-sectional view of an electromagnetic retarder clutch provided in an embodiment of the present application;

[0019] Figure 2 A cross-sectional schematic diagram of a driving mechanism provided in an embodiment of the present application;

[0020] Figure 3 A partial cross-sectional view of a pulley assembly and a drive disc provided in an embodiment of the present application;

[0021] Figure 4 Provided for the embodiments of this application Figure 3 Local schematic diagram of point I in the middle.

[0022] The text annotations in the figure represent:

[0023] 1. Shell body; 2. Impeller; 3. Driving mechanism; 31. First driving shaft; 32. Second sleeve; 33. Third sleeve; 4. Pulley assembly; 41. Outer belt wheel; 411. First groove; 42. Inner belt wheel; 43. Magnetic isolation ring; 5. Eddy current disk; 6. Driving disk; 61. Second groove; 7. Coil; 8. Seal; 91. First ball; 92. Second ball. DETAILED DESCRIPTION

[0024] The present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the relevant invention, rather than to limit the invention. It is also necessary to explain that, for ease of description, only the parts related to the invention are shown in the accompanying drawings.

[0025] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0026] As mentioned in the background technology, in view of the problems in the prior art, the present application proposes an electromagnetic retarding clutch, comprising:

[0027] A shell body 1, wherein a first space is provided in the shell body 1;

[0028] An impeller 2, wherein the impeller 2 is disposed at one end of the housing body 1, the axis of the impeller 2 is a first axis, the extending direction of the first axis is a first direction, and the impeller 2 can rotate around the first axis;

[0029] A driving mechanism 3, wherein the driving mechanism 3 comprises a driving disc 6 and a first driving assembly, and the driving disc 6 rotates to drive the first driving assembly and the impeller 2 to rotate;

[0030] A pulley group 4, the pulley group 4 is used to drive the driving mechanism 3 to rotate, the pulley group 4 includes an inner pulley 42 sleeved on the outer wall of the first driving component, an outer pulley 41 is sleeved on the outer side of the inner pulley 42, a magnetic isolation ring 43 is provided between the inner pulley 42 and the outer pulley 41, and a first gap is formed between the magnetic isolation ring 43 and the driving disc 6;

[0031] In some specific scenarios, please refer to Figure 1The pulley group 4 shown in the figure, the pulley group 4 is externally connected to a driving motor to drive the pulley group 4 to rotate around the first axis, and the pulley group 4 rotates to drive the driving disc 6 in the driving mechanism 3 to rotate. When the driving disc 6 and the pulley group 4 rotate at the same speed, the impeller 2 rotates at the same speed as the driving disc 6 and the pulley 4 group. When the driving disc 6 and the pulley group 4 rotate at different speeds, the impeller 2 rotates slowly. Normally, the magnetic isolation ring 43 is welded between the inner belt pulley 42 and the outer belt pulley 41. The higher the welding depth, the greater the connection strength of the magnetic isolation ring 43. When the driving disc 6 and the pulley group 4 need to rotate at the same speed, the driving disc 6 and the pulley group 4 need to contact from Due to the rotation generated by the connection, when the driving disk 6 increases its rotation speed to keep the same speed as the pulley group 4, it is easy to cause wear on the weld between the magnetic shielding ring 43 and the inner belt pulley 42 and the outer belt pulley 41, thereby affecting the welding depth of the magnetic shielding ring 43, affecting the welding effect of the magnetic shielding ring 43, thereby affecting the connection strength of the pulley group 4, and reducing the service life of the pulley group 4. Therefore, when the magnetic shielding ring 43 is not in contact with the driving disk 6 and there is a first gap, the above situation can be avoided; the first gap is the first groove 411 formed by the inner belt pulley 42 and the outer belt pulley 41 after welding through the magnetic shielding ring; wherein, the first direction is the horizontal direction;

[0032] In summary, the present solution arranges a magnetic isolation ring 43 to connect the inner pulley 42 and the outer pulley 41, and there is a first gap between the magnetic isolation ring 43 and the driving disk 6 so as to prevent the magnetic isolation ring 43 from contacting the driving disk 6 and causing wear at the connection between the magnetic isolation ring 43 and the pulley group 4, thereby preventing reduction in the connection strength of the magnetic isolation ring 43. The pulley group 4 is not prone to breakage and can be used for a long time.

[0033] In a preferred embodiment, the first driving assembly includes a first driving shaft 31, a first through hole is provided in the middle of the driving disc 6, one end of the first driving shaft 31 passes through the first through hole, and is connected to the impeller 2 away from the driving disc 6, and the inner belt pulley 42 is fixedly connected to the second sleeve 32;

[0034] In some specific scenarios, please refer to Figure 1 The driving disk 6 and the impeller 2 are shown, and a second through hole is provided in the middle of the impeller 2. The line connecting the second through hole and the first through hole is kept horizontal with the first direction. The first driving shaft 31 passes through the first through hole and the second through hole. When the driving disk 6 rotates, the impeller 2 rotates synchronously under the connection of the first driving shaft 31.

[0035] In a preferred embodiment, a second sleeve 32 is provided on the outer wall of the first drive shaft 411 between the drive disc 6 and the impeller 2 along the first direction, and the second sleeve 32 is rotatably connected to the first drive shaft 31; the pulley assembly 4 includes an inner belt wheel 42 sleeved on the outer wall of the second sleeve 32 close to the end of the drive disc 6, and the inner belt wheel 42 is fixedly connected to the second sleeve 32;

[0036] In some specific scenarios, please refer to Figure 1 and Figure 2 In the driving mechanism 3 shown, a first ball 91 is provided between the second sleeve 32 and the first driving shaft 31. When the second sleeve 32 rotates, the first ball 91 can rotate along with it without affecting the state of the first driving shaft 31, thereby avoiding the synchronous rotation of the first driving shaft 31.

[0037] In a preferred embodiment, a third sleeve 33 is sleeved on the outer wall of the second sleeve 32 away from the driving disc 6, the third sleeve 33 is rotatably connected to the second sleeve 32, and the third sleeve 33 is fixedly connected to the housing body 1;

[0038] In some specific scenarios, please refer to Figure 1 and Figure 2 In the driving mechanism 3 shown in the figure, the third sleeve 33 is arranged on the outer sleeve of the second sleeve 32, and a second ball 92 is arranged between the second sleeve 32 and the third sleeve 33. When the second sleeve 32 rotates, the second ball 92 rolls along to prevent the third sleeve 33 from rotating synchronously. When the second sleeve 32 rotates, the existence of the second ball 92 can prevent the third sleeve 33 from rotating. Since the second sleeve 32 and the first drive shaft 31 can move relative to each other, the first drive shaft 31 and the third sleeve 33 can move at a relatively variable speed. This avoids the situation where two bearings are set to drive separately due to different speeds, thereby reducing the space required for installation.

[0039] In a preferred embodiment, the pulley group 4 is provided with a vortex disk 5 at the end away from the impeller 2, and the vortex disk 5 is fixedly connected to the belt outer pulley 41, and the rotation of the belt outer pulley 41 drives the vortex disk 5 to rotate synchronously;

[0040] In some specific scenarios, please refer to Figure 1 In the pulley assembly 4 shown, the magnetic isolation ring 43 connects the outer pulley 41 and the inner pulley 42 by welding, and the connection strength is enhanced; the vortex disk 5 is provided at the end of the outer pulley 41 away from the impeller 2.

[0041] In a preferred embodiment, a second space is further provided between the inner belt pulley 42, the outer belt pulley 41 and the magnetic isolation ring 43, and a coil 7 is further provided outside the inner belt pulley 42 in the second space. The coil 7 is externally connected to a power source, and the coil 7 is energized to generate a magnetic field to drive the driving disk 6 to engage with the pulley group 4, so that the pulley group 4 drives the driving mechanism 3 to rotate;

[0042] In some specific scenarios, please refer to Figure 3 The coil 7 shown, the pulley group 4 is provided with a first suction surface near the driving disk 6, and the first suction surface does not include the location where the magnetic isolation ring 43 is provided; the driving disk 6 is provided with a second suction surface near the pulley group 4, and the second suction surface does not include the location where the second groove 61 is provided on the driving disk 6;

[0043] In a preferred embodiment, a magnet is provided on the side of the driving disc 6 close to the eddy current disc 5. When the coil 7 is powered off and the driving disc 6 is separated from the pulley set 4, the eddy current disc 5 rotates to generate eddy current force with the magnet, driving the driving mechanism 3 to rotate;

[0044] In certain specific scenarios, when the first suction surface and the second suction surface are not in contact and separated, the eddy current disk 5 rotates and generates an eddy current between the drive disk 6, and the eddy current force acts on the drive disk 6. The drive disk 6 rotates around the first axis driven by the eddy current force, and because the driving strength of the eddy current force is less than the direct drive of the pulley group 4, the rotation speed of the drive disk 6 is reduced and can only reach 50% of the rotation speed of the eddy current disk 5, achieving a deceleration effect. The rotation of the drive disk 6 drives the first drive shaft 31 connected thereto to rotate, thereby driving the impeller 2 to rotate;

[0045] When the electromagnetic retarding clutch is needed to quickly pump water or blow air, the pulley group 4 rotates to drive the eddy current disk 5 connected thereto to rotate, and the coil 7 is energized. The coil 7 generates magnetic force by electromagnetism, which acts on the pulley group 4 and the drive disk 6, so that the first suction surface contacts the second suction surface. Through the friction force and electromagnetic force between the coil 7 and the pulley group 4, the drive disk 6 rotates synchronously with the pulley group 4. The rotation of the drive disk 6 is connected to the first drive shaft 31, and the impeller 2 can rotate synchronously. At this time, the rotation speed of the impeller 2 is the same as that of the pulley group 4, achieving a rapid rotation effect.

[0046] When the electromagnetic deceleration clutch does not require high-frequency movement, the pulley group 4 is driven externally to rotate, the eddy current disk 5 rotates synchronously, the coil 7 is powered off, and an eddy current force is generated between the eddy current disk 5 and the drive disk 6. Under the action of the eddy current force, the drive disk 6 rotates, and the rotation of the drive disk 6 drives the first drive shaft 31 and the impeller 2 to rotate synchronously, so that the rotation speed of the impeller 2 at this time is less than the rotation speed of the pulley group 4, thereby achieving a deceleration effect.

[0047] In a preferred embodiment, the driving disk 6 is provided with a second groove 61 near the magnetic isolation ring 43, the second groove 61 opens toward the magnetic isolation ring 43, and the projection of the magnetic isolation ring 43 toward the driving disk 6 along the first direction has an overlapping surface with the second groove 61, bypassing the second groove 61;

[0048] In some specific scenarios, please refer to Figure 1 , Figure 3 and Figure 4 The driving disk 6 shown in the figure cannot pass through the magnetic field because the first groove 411 and the second groove 61 are set. The first groove 411 and the second groove 61 can be set exactly correspondingly or overlappingly or staggered. Therefore, the above setting increases the radius of the magnetic field generated by the coil 7 as much as possible, thereby increasing the magnetic field force, increasing the torque of the driving disk 6, and ensuring the rotation amplitude and effect of the driving disk 6.

[0049] In a preferred embodiment, a sealing member 8 is provided at the end of the first driving shaft 31 close to the impeller 2, and a third groove is provided at the side of the housing body 1 close to the impeller 2, and the sealing member 8 is embedded in the third groove to prevent dust or water from entering the driving mechanism 3;

[0050] In some specific scenarios, please refer to Figure 1 The sealing member 8 shown in the figure has a fourth groove provided on the side of the impeller 2 close to the outer shell body 1, the opening of the fourth groove faces the outer shell body 1, the third groove and the fourth groove constitute a third space, and the sealing member 8 is arranged in the third space, that is, partially embedded in the third groove; since the impeller 2 is used for blowing air or pumping water away from the side of the outer shell body 1, dust or water will often float or splash, and dust or water can easily enter the outer shell body 1 through the impeller 2 and adhere to the driving mechanism 3, causing the driving mechanism 3 to get stuck or rusted, affecting subsequent use, and the sealing member 8 can avoid or reduce the occurrence of such phenomenon.

[0051] This article uses specific examples to illustrate the principles and implementation methods of this application. The description of the above embodiments is only used to help understand the method and its core ideas of this application. The above is only the preferred implementation method of this application. It should be pointed out that due to the limitations of textual expression and the objective existence of infinite specific structures, ordinary technicians in this technical field can make several improvements, modifications or changes without departing from the principles of the present invention, and can also combine the above technical features in an appropriate manner; these improvements, modifications, changes or combinations, or the direct application of the inventive concept and technical solution to other occasions without improvement, should be regarded as the scope of protection of this application.

Claims

1. An electromagnetic retarder clutch, characterized in that: include: A shell body (1), wherein a first space is provided in the shell body (1); An impeller (2), the impeller (2) being arranged at one end of the housing body (1), the axis of the impeller (2) being a first axis, the extending direction of the first axis being a first direction, and the impeller (2) being rotatable around the first axis; A driving mechanism (3), the driving mechanism (3) comprising a driving disc (6) and a first driving assembly, wherein the driving disc (6) rotates to drive the first driving assembly and the impeller (2) to rotate; A pulley assembly (4), the pulley assembly (4) being used to drive the driving mechanism (3) to rotate, the pulley assembly (4) comprising an inner belt wheel (42) sleeved on the outer wall of the first driving component, an outer belt wheel (41) sleeved on the outer side of the inner belt wheel (42), a magnetic isolation ring (43) connecting the inner belt wheel (42) and the outer belt wheel (41), and a first gap between the magnetic isolation ring (43) and the driving disk (6) on the side close to the driving disk (6).

2. The electromagnetic retarder clutch according to claim 1, characterized in that: The first drive assembly comprises a first drive shaft (31), a first through hole is provided in the middle of the drive disc (6), one end of the first drive shaft (31) passes through the first through hole and is connected to the impeller (2) at a side away from the drive disc (6), and the rotation of the drive disc (6) drives the first drive shaft (31) and the impeller (2) to rotate synchronously.

3. The electromagnetic retarder clutch according to claim 2, characterized in that: A second sleeve (32) is provided on the outer wall of the first drive shaft (31) between the drive disc (6) and the impeller (2) along the first direction, and the second sleeve (32) is rotatably connected to the first drive shaft (31); the inner belt pulley (42) is fixedly connected to the second sleeve (32).

4. The electromagnetic retarder clutch according to claim 3, characterized in that: A third sleeve (33) is sleeved on the outer wall of the second sleeve (32) away from the driving disc (6); the third sleeve (33) is rotatably connected to the second sleeve (32); and the third sleeve (33) is fixedly connected to the housing body (1).

5. The electromagnetic retarder clutch according to claim 3, characterized in that: The end of the pulley assembly (4) away from the impeller (2) is provided with a vortex disk (5), and the vortex disk (5) is fixedly connected to the belt outer wheel (41), and the rotation of the belt outer wheel (41) drives the vortex disk (5) to rotate synchronously.

6. The electromagnetic retarder clutch according to claim 5, characterized in that: A second space is provided between the inner belt wheel (42), the outer belt wheel (41) and the magnetic isolation ring (43); a coil (7) is provided outside the inner belt wheel (42) in the second space; the coil (7) is connected to an external power source; when the coil (7) is energized, a magnetic field is generated to drive the driving disk (6) to engage with the belt pulley assembly (4), so that the belt pulley assembly (4) drives the driving mechanism (3) to rotate.

7. The electromagnetic retarder clutch according to claim 6, characterized in that: The drive disc (6) is provided with a magnet near the eddy current disc (5). When the coil (7) is powered off and the drive disc (6) is separated from the pulley assembly (4), the eddy current disc (5) rotates to generate eddy current force with the magnet, thereby driving the drive mechanism (3) to rotate.

8. The electromagnetic retarder clutch according to claim 6, characterized in that: The driving disk (6) is provided with a second groove (61) near the magnetic shielding ring (43); the opening of the second groove (61) faces the magnetic shielding ring (43); the projection of the magnetic shielding ring (43) along the first direction toward the driving disk (6) has an overlapping surface with the second groove (61); the magnetic force bypasses the second groove (61).

9. The electromagnetic retarder clutch according to claim 4, characterized in that: A sealing member (8) is provided at the end sleeve of the first drive shaft (31) close to the impeller (2), and a third groove is provided at the side of the housing body (1) close to the impeller (2). The sealing member (8) is embedded in the third groove to prevent dust or water from entering the drive mechanism (3).

Images