Sucker clutch

Abstract

The utility model discloses a suction cup clutch, and relates to the field of clutches, the suction cup clutch comprises a driving shaft, a heat pipe is fixedly mounted on the inner side of a mounting groove, the outer diameter surface of the heat pipe abuts against the inner wall of the mounting groove, a plurality of heat dissipation holes are formed in the surface of a heat dissipation sleeve, and the heat dissipation holes are evenly distributed in the outer diameter surface of the heat dissipation sleeve. The periphery of the heat dissipation sleeve is fixedly sleeved with a heat conduction copper sheet, the heat conduction copper sheet abuts against the outer diameter surface of the heat dissipation sleeve in a surrounding mode, heat dissipation fins are fixedly arranged on the outer diameter surface of the heat conduction copper sheet in a surrounding mode, and through the arrangement of the heat pipe, the heat dissipation holes, the heat conduction copper sheet and the heat dissipation fins, heat energy generated by friction can be conducted to the outside in a physical heat conduction mode; therefore, the internal heat dissipation effect of the clutch is achieved, abrasion of internal components is reduced, and the service life of the clutch is prolonged.

Description

Technical Field

[0001] The present application relates to the field of clutches, and in particular to a suction cup clutch. Background Art

[0002] The suction cup clutch is a friction clutch that generates clamping force by electromagnetic force. It is widely used because it can realize remote control, small control energy, easy to realize machine tool automation, fast action and simple structure. The function of the suction cup clutch is to transfer the torque (or power) of the actuator from the driving shaft side to the driven shaft side. It is widely used in various mechanisms to achieve rapid starting and braking.

[0003] For example, the new electromagnetic clutch in patent number CN201820660255.4 still has the following shortcomings in actual use:

[0004] The electromagnetic clutch friction plate in the above patent needs to be separated and contacted for a long time during actual use, during which huge heat will be generated. The heat generated will cause thermal expansion and contraction, resulting in poor contact or transmission deviation of the friction plate, affecting subsequent use. Utility Model Content

[0005] In order to improve the heat dissipation effect of the friction plate and extend its service life, the present application provides a suction cup clutch.

[0006] The present application provides a suction cup clutch adopting the following technical solution:

[0007] A suction cup clutch comprises a driving shaft, a connecting sleeve is movably limited on the surface of the driving shaft, a heat dissipation sleeve is fixedly arranged at one end of the connecting sleeve, an elastic steel plate is fixedly arranged on the surface of one end of the connecting sleeve close to the heat dissipation sleeve, an armature is fixedly arranged on the surface of one side of the elastic steel plate, a mounting groove is arranged on the inner diameter of the heat dissipation sleeve, a heat pipe is fixedly installed on the inner side of the mounting groove, the outer diameter surface of the heat pipe abuts against the inner wall of the mounting groove, a plurality of heat dissipation holes are arranged on the surface of the heat dissipation sleeve, the heat dissipation holes are evenly distributed on the outer diameter surface of the heat dissipation sleeve, a heat conductive copper sheet is fixedly arranged on the periphery of the heat dissipation sleeve, the heat conductive copper sheet surrounds and abuts against the outer diameter surface of the heat dissipation sleeve, a heat dissipation fin is fixedly arranged around the outer diameter surface of the heat conductive copper sheet, a plurality of groups of heat dissipation fins are provided, and the heat dissipation fins are evenly arranged.

[0008] By adopting the above technical solution, the heat generated by the device during operation will be absorbed by the heat pipes arranged on the periphery, thereby reducing the accumulation of heat between the driven components. The heat absorbed by the heat pipes inside the mounting groove can be quickly transferred to the surface of the thermally conductive copper sheet through the heat dissipation holes. Finally, the heat absorbed by the thermally conductive copper sheet can be dissipated to the outside through the heat sink, thereby extending the service life of the internal components of the device.

[0009] Preferably, a connecting shell is movably sleeved on one side surface of the driving shaft, a slot is provided on one side of the connecting shell, a magnetic coil is fixedly installed on the inner side of the slot, a shell is fixedly sleeved on the side surface of the driving shaft close to the magnetic coil, a mounting hole is provided on the inner side of the shell, a pressure block is fixedly installed on the inner side of the mounting hole, and a friction plate is fixedly provided on the side of the pressure block close to the heat dissipation sleeve.

[0010] By adopting the above technical solution, the driving shaft rotates after being connected to the external driving machinery, and the driving shaft will drive the outer shell to rotate as a whole. After the magnetic coil is energized, magnetic force will be generated, which will produce suction on the armature. The spring steel plate on one side of the armature is deformed, and the armature will be adsorbed and abutted against the opposite side of the friction plate during the movement toward the magnetic coil, so that the armature drives the connecting sleeve to be attracted to the friction plate, thereby putting the connecting sleeve into an engaged state. At this time, the friction between the friction plate and the armature will transmit torque, thereby realizing the use of the device.

[0011] Preferably, a connecting wire is passed through the bottom surface of the connecting shell, one end of the connecting wire is electrically connected to the magnetic coil, and one side of the connecting wire is electrically connected to the transformer.

[0012] By adopting the above technical solution, the magnetic coil can be conveniently connected to the external power supply through the connecting wire, and the input voltage can be reduced through the transformer, thereby reducing the heat generation inside the device and achieving a cooling effect.

[0013] Preferably, one end of the shell close to the magnetic coil extends to the surface edge of the connecting shell, and a rotatable gap is left between the inner wall of the shell and the outer wall of the connecting shell.

[0014] By adopting the above technical solution, the housing is equivalent to an active disk assembly, and the housing is driven by the active shaft to rotate as a whole, so that the device can adjust the clutch state at any time.

[0015] Preferably, one end of the heat dissipation sleeve close to the friction plate is sleeved on the outer wall of the outer shell, and a gap of two millimeters is left between the inner diameter of the heat dissipation sleeve and the outer wall of the outer shell.

[0016] By adopting the above technical solution, the heat dissipation sleeve is fixedly arranged in cooperation with the connecting sleeve, which is equivalent to a driven disk assembly as a whole. In cooperation with the above active disk assembly, a better clutch effect of the device can be achieved.

[0017] Preferably, one end of the pressing block close to the friction plate is arranged flush with one end of the outer shell close to the friction plate, and the friction plate is installed on the outer side of the outer shell and the inner side of the heat dissipation sleeve.

[0018] By adopting the above technical solution, the pressure block can provide sufficient supporting force on one side of the friction plate, so as to generate better friction between the friction plate and the armature. The friction plate is located on the inner side of the heat dissipation sleeve, and the heat generated during friction will be quickly absorbed by the heat dissipation component inside the heat dissipation sleeve to achieve better heat dissipation effect.

[0019] Preferably, the elastic steel plate and the armature are both installed in the inner diameter of the heat pipe.

[0020] By adopting the above technical solution, the elastic steel plate and the armature are arranged on the inner side of the heat pipe. When heat is generated between the armature and the friction plate, the heat will be absorbed by the heat pipe, thereby achieving the effect of heat dissipation.

[0021] Preferably, the inner side of the heat sink is connected to the thermally conductive copper sheet via thermally conductive silicone grease, and the inner wall of the thermally conductive copper sheet is connected to the outer surface of the heat sink sleeve via a thermally conductive silicone grease layer.

[0022] By adopting the above technical solution, the heat-resistant temperature of the thermal grease is between 200℃ and 300℃, but the maximum temperature that different types of thermal grease can withstand may be different. The thermal grease can be used as a heat dissipation material between the heat sink and the thermal copper sheet, and between the thermal copper sheet and the heat dissipation sleeve, so that the heat can be smoothly transferred to the heat dissipation part, thereby achieving the heat dissipation effect.

[0023] In summary, the present application includes at least one of the following beneficial technical effects:

[0024] 1. Through the heat pipes, heat dissipation holes, heat-conducting copper sheets and heat sinks, the heat energy generated by friction can be conducted to the outside by physical heat conduction, thereby achieving the effect of internal heat dissipation of the clutch, reducing the wear of internal components and extending its service life;

[0025] 2. By installing a transformer, the voltage can be lowered, which can reduce the flow of current, thereby reducing the load on the clutch, reducing heat generation, and achieving the purpose of cooling. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is the overall exploded view of this application;

[0027] Figure 2 This is a cross-sectional view of the interior of the connecting sleeve of this application;

[0028] Figure 3 This is an exploded view of the heat sink for this application;

[0029] Figure 4 This is the overall structure diagram of this application.

[0030] Reference numerals: 1, driving shaft; 2, connecting shell; 3, slot; 4, magnetic coil; 5, housing; 6, mounting hole;

[0031] 7. Pressing block; 8. Friction plate; 9. Connecting sleeve; 10. Elastic steel plate; 11. Armature; 12. Heat dissipation sleeve;

[0032] 13. Installation slot; 14. Heat pipe; 15. Heat dissipation hole; 16. Thermal conductive copper sheet; 17. Heat sink; 18. Connecting wire; 19. Transformer. DETAILED DESCRIPTION

[0033] The following is combined with Figure 1-4 This application is described in further detail.

[0034] The embodiment of the present application discloses a suction cup clutch.

[0035] Example 1

[0036] Reference Figure 1-3 , a suction cup clutch comprises a driving shaft 1, one end surface of the driving shaft 1 is rotatably connected with the inner diameter of the connecting shell 2 through a bearing, the installation method of the bearing is an existing and conventional technology and will not be described in detail, the right side surface of the connecting shell 2 is provided with a slot 3 in the shape of an arc groove, the magnetic coil 4 is fixedly clamped in the inside of the slot 3, the middle surface of the driving shaft 1 is surrounded by, and the inner diameter of the outer shell 5 is in contact with the surface of the driving shaft 1, the pressing block 7 is in contact with the inner diameter of the outer shell 5 and is circular, the edge of the pressing block 7 is fixedly clamped in the inner side of the mounting hole 6, the pressing block 7 and the friction plate 8 are fixedly installed by screws, the left end plane of the friction plate 8 is flush with the right plane of the outer shell 5, the left end of the driving shaft 1 is connected to the output end of the external driving machinery, the inner diameter of the connecting sleeve 9 is rotatably sleeved with the right end surface of the driving shaft 1 through the bearing, the heat dissipation sleeve 12 is an annular circular sleeve, the diameter of the heat dissipation sleeve 12 is larger than the outer diameter of the connecting sleeve 9, and the side of the elastic steel plate 10 in contact with the connecting sleeve 9 is an arc-shaped arch surface, such as Figure 2 As shown: the elastic steel plate 10 and the connecting sleeve 9 are fixed by the right edge of the arc-shaped arch surface, the left arc surface of the elastic steel plate 10 and one side of the armature 11 are fixed, the mounting groove 13 is a circular groove, and multiple groups of heat pipes 14 are clamped on the inner side of the mounting groove 13, and the heat pipes 14 are in a winding manner and abut against the inner wall of the mounting groove 13. A plurality of through-type heat dissipation holes 15 are evenly distributed on the outer circular surface of the heat dissipation sleeve 12, and the heat dissipation holes 15 are circular. The thermal conductive copper sheet 16 is a circular thin sheet sleeve, and a paste-like thermal conductive silicone grease layer is applied between the heat dissipation sleeve 12 and the thermal conductive copper sheet 16. The heat dissipation sheet 17 composed of multiple sheets is evenly fixed on the outer diameter of the thermal conductive copper sheet 16.

[0037] Through the above arrangement: the motor drives the driving shaft 1 to rotate, and the driving shaft 1 drives the outer shell 5, the pressure block 7 and the friction plate 8 inside it to rotate synchronously. After the magnetic coil 4 is energized with the external power supply, a magnetic field will be generated on the inner side of the connecting shell 2, and the magnetic field will generate suction on the armature 11 on one side of the connecting sleeve 9, so that the armature 11 moves toward the direction of the magnetic coil 4, so that one side of the armature 11 and the friction plate 8 are firmly adsorbed, and the elastic steel plate 10 will be deformed during the movement of the armature 11, and the high-speed rotation The friction plate 8 will drive the armature 11 to rotate accordingly, thereby realizing the rotation of the connecting sleeve 9. When more heat is generated between the friction plate 8 and the armature 11 due to friction, the heat will accumulate inside the heat dissipation sleeve 12. The rotation of the clutch drives the surrounding air to undergo a phase change cycle. The generated heat can be evenly transferred to the inner wall of the mounting groove 13 through the heat pipe 14, and then transferred to the surface of the heat-conducting copper sheet 16 through the heat dissipation holes 15. Finally, the heat on the surface of the heat-conducting copper sheet 16 is dissipated to the outside through the heat sink 17, thereby realizing the removal of friction heat.

[0038] Reference Figure 4 A connecting wire 18 is connected through the surface of one side of the connecting shell 2, one end of the connecting wire 18 is connected to the surface terminal of the magnetic coil 4, and the two leads of the transformer 19 are respectively connected to the connecting wire 18 points. The resistance of the transformer 19 is equal to the ratio of the voltage difference between the two connection points to the current passing through the transformer 19.

[0039] The transformer 19 can reduce the current flow through the magnetic coil 4, thereby reducing the heat generated on the surface of the magnetic coil 4 due to long-term operation at high voltage, improving the heat dissipation of the device and extending the service life of the internal components.

[0040] The implementation principle of a harmonic reducer in the embodiment of the present application is:

[0041] The driving shaft 1 and the outer shell 5 on the surface are driven to rotate synchronously through the driving component. After the magnetic coil 4 is energized, it will generate an attractive force on the armature 11 on the right end surface of the driving shaft 1, so that one side of the armature 11 and the friction plate 8 are firmly adsorbed, and the armature 11 will cause deformation to the elastic steel plate 10 on one side of the connecting sleeve 9. Through the friction force generated between the armature 11 and the friction plate 8, the outer shell 5 drives the connecting sleeve 9 and the heat dissipation sleeve 12 to rotate with it, thereby realizing the clutch state, and the heat generated by the friction plate 8 will be absorbed by the heat pipe 14 in the installation groove 13, and dissipated through the heat dissipation hole 15 to the surface of the heat-conducting copper plate 16, and finally discharged to the outside by the heat sink 17, so as to achieve the heat dissipation effect of the device. The installed transformer 19 can reduce the voltage and change the current, reduce the load of the magnetic coil 4, and thus reduce the heat generation. Whenever the magnetic coil 4 is powered off, the armature 11 loses its suction force, and the elastic steel plate 10 drives the armature 11 and the friction plate 8 to separate, so that the clutch is in a stopped state.

[0042] The heat pipe 14 and the heat-conducting copper sheet 16 are both made of copper material. The heat pipe 14 is installed using a copper tube winding arrangement. The copper tubes gathered together can increase their own thermal conductivity. The heat sink 12 is made of heat-resistant ABS material and can maintain good performance in a high temperature environment. The heat sink 17 is made of aluminum alloy. The outer shell 5 and the connecting sleeve 9 are both made of steel material.

[0043] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A suction cup clutch, comprising a driving shaft (1), characterized in that: The surface of the driving shaft (1) is movable and limited with a connecting sleeve (9), one end of the connecting sleeve (9) is fixedly provided with a heat dissipation sleeve (12), an elastic steel plate (10) is fixedly provided on the surface of one end of the connecting sleeve (9) close to the heat dissipation sleeve (12), an armature (11) is fixedly provided on one side surface of the elastic steel plate (10), the inner diameter of the heat dissipation sleeve (12) is provided with a mounting groove (13), a heat pipe (14) is fixedly installed on the inner side of the mounting groove (13), and the outer diameter surface of the heat pipe (14) is in contact with the inner wall of the mounting groove (13); The surface of the heat dissipation sleeve (12) is provided with a plurality of heat dissipation holes (15), the heat dissipation holes (15) are evenly distributed on the outer diameter surface of the heat dissipation sleeve (12), a heat conductive copper sheet (16) is fixedly sleeved on the periphery of the heat dissipation sleeve (12), the heat conductive copper sheet (16) surrounds and abuts against the outer diameter surface of the heat dissipation sleeve (12), a heat dissipation sheet (17) is fixedly provided around the outer diameter surface of the heat conductive copper sheet (16), and the heat dissipation sheets (17) are provided in a plurality of groups and are evenly arranged.

2. A suction cup clutch according to claim 1, characterized in that: A connecting shell (2) is movably sleeved on one side surface of the driving shaft (1), a slot (3) is provided on one side of the connecting shell (2), a magnetic coil (4) is fixedly mounted on the inner side of the slot (3), a shell (5) is fixedly sleeved on the one side surface of the driving shaft (1) close to the magnetic coil (4), a mounting hole (6) is provided on the inner side of the shell (5), a pressure block (7) is fixedly mounted on the inner side of the mounting hole (6), and a friction plate (8) is fixedly mounted on the side of the pressure block (7) close to the heat dissipation sleeve (12).

3. A suction cup clutch according to claim 2, characterized in that: A connecting wire (18) is passed through the bottom surface of the connecting shell (2), one end of the connecting wire (18) is electrically connected to the magnetic coil (4), and one side of the connecting wire (18) is electrically connected to a transformer (19).

4. A suction cup clutch according to claim 2, characterized in that: One end of the outer shell (5) close to the magnetic coil (4) extends to the surface edge of the connecting shell (2), and a rotation gap is left between the inner wall of the outer shell (5) and the outer wall of the connecting shell (2).

5. A suction cup clutch according to claim 1, characterized in that: One end of the heat dissipation sleeve (12) close to the friction plate (8) is sleeved on the outer wall of the outer shell (5), and a gap of two millimeters is left between the inner diameter of the heat dissipation sleeve (12) and the outer wall of the outer shell (5).

6. A suction cup clutch according to claim 2, characterized in that: One end of the pressure block (7) close to the friction plate (8) is arranged flush with one end of the outer shell (5) close to the friction plate (8), and the friction plate (8) is installed on the outer side of the outer shell (5) and the inner side of the heat dissipation sleeve (12).

7. A suction cup clutch according to claim 1, characterized in that: The elastic steel plate (10) and the armature (11) are both installed in the inner diameter of the heat pipe (14).

8. A suction cup clutch according to claim 1, characterized in that: The inner side of the heat sink (17) is connected to the heat-conducting copper sheet (16) via heat-conducting silicone grease, and the inner wall of the heat-conducting copper sheet (16) is connected to the outer surface of the heat-dissipating sleeve (12) via a heat-conducting silicone grease layer.

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