Independent self-return electromagnetic actuating mechanism for electromagnetic clutch

Abstract

The utility model discloses an independent self-return electromagnetic actuating mechanism for an electromagnetic clutch, which comprises a bushing, a return spring, an electromagnetic coil mounting sleeve, an actuating sleeve and a shell, the left end of the shell is provided with an annular eave body II radially extending towards the interior of an inner cavity of the shell, and the bushing penetrates through the inner cavity of the shell. The inner end edge face of the second annular eave body is in clearance fit with the outer side face of the left end of the lining, the executing sleeve is fixedly arranged on the outer side face of the right end of the lining in a sleeved mode, the electromagnetic coil mounting sleeve is embedded in the inner wall face of the right end of the shell, an annular groove is formed in the side face of the periphery of the electromagnetic coil mounting sleeve, and a first annular cavity is defined by the annular groove and the inner wall face of the right end of the shell. An electromagnetic induction coil is embedded in the first annular cavity, a second annular cavity with an opening facing the right side is defined by the inner wall face of the left end of the shell and the outer side face of the left end of the bush, the left end face of the execution sleeve is provided with a second step section coaxially extending towards the left side, the second step section is correspondingly matched with the second annular cavity, and the reset spring is slidably connected to the outer side face of the left end of the bush in a sleeving mode. The left end of the reset spring abuts against the second annular eave body at the left end of the lining, the right end of the reset spring abuts against the left end face of the second step section, and the right end of the shell is provided with an annular plate assembly used for limiting the electromagnetic coil installation sleeve and the execution sleeve in the cavity of the shell. According to the independent self-return electromagnetic actuating mechanism, the reset spring is integrated in the electromagnetic actuating mechanism, the structure and the assembly relation of all the parts are ingeniously improved, the number of the parts is effectively reduced, the overall size of the independent self-return electromagnetic actuating mechanism is remarkably reduced, the total weight is remarkably reduced, and the manufacturing cost is lower; and the overall structural design is compact and reasonable, the electromagnetic clutch is also suitable for extreme application scenes with narrow spaces, and a foundation is laid for overall layout optimization of the electromagnetic clutch.

Description

Technical Field

[0001] The utility model relates to the technical field of clutches, in particular to an independent self-returning electromagnetic actuator for an electromagnetic clutch. Background Art

[0002] Electromagnetic clutch is a friction clutch that uses electromagnetic force to achieve remote control. It controls the engagement and disengagement of the clutch by turning on and off the power of the coil. It is widely used in machine tools and mechanical transmission systems. Its working principle is based on electromagnetic induction and friction, and it can achieve functions such as rapid start, braking, forward and reverse rotation or speed regulation of mechanical transmission parts. It has the advantages of simple structure, fast action, low control energy, easy remote control, and rapid and smooth braking. Therefore, electromagnetic clutch is increasingly favored by the automotive industry.

[0003] At present, the self-return system of the electromagnetic clutch mostly realizes the self-return function of the actuator through the return spring of the external frame of the electromagnetic actuator. The return spring of the external frame of the electromagnetic actuator will add additional components, resulting in a larger volume of the electromagnetic actuator itself and a higher manufacturing cost. Since the electromagnetic actuator itself is large in size, the electromagnetic clutch is limited by the use space constraints and is not suitable for application scenarios with small spaces. To this end, the utility model proposes an independent self-returning electromagnetic actuator for an electromagnetic clutch, in order to solve the above technical problems. Summary of the invention

[0004] The purpose of the utility model is to overcome the defects existing in the prior art and provide an independent self-returning electromagnetic actuator for an electromagnetic clutch. By integrating the reset spring into the interior of the electromagnetic actuator and cleverly improving the structure and assembly relationship of each component, the number of parts is effectively reduced compared with the traditional return spring structure on the outside of the electromagnetic actuator, so that the overall volume of the independent self-returning electromagnetic actuator is significantly reduced, the total weight is significantly reduced, and the manufacturing cost is lower. The overall structural design of the independent self-returning electromagnetic actuator is compact and reasonable, and it is also applicable to extreme application scenarios with narrow space, laying a foundation for the overall layout optimization of the electromagnetic clutch, and the preparation and implementation feasibility is high, and the economy and practicality are strong.

[0005] To achieve the above-mentioned purpose, the technical solution of the utility model is to design an independent self-returning electromagnetic actuator for an electromagnetic clutch, including a bushing, a reset spring, an electromagnetic coil mounting sleeve, an actuator sleeve and a shell. The left end of the shell has an annular eaves body 2 radially extending into its internal cavity. The bushing passes through the internal cavity of the shell, and the inner edge surface of the annular eaves body 2 is clearance-matched with the outer side surface of the left end of the bushing. The actuator sleeve is sleeve-fixed on the outer side surface of the right end of the bushing, and the electromagnetic coil mounting sleeve is embedded on the inner wall surface of the right end of the shell. The outer peripheral side surface of the electromagnetic coil mounting sleeve is provided with an annular groove, and the annular groove is aligned with the shell. The inner wall surface at the right end is enclosed to form an annular cavity 1, and an electromagnetic induction coil is embedded in the annular cavity 1. The inner wall surface at the left end of the shell and the outer side surface of the left end of the bushing are enclosed to form an annular cavity 2 with an opening facing the right side. The left end surface of the execution sleeve has a stage 2 extending coaxially to the left side, and the stage 2 is adapted to the annular cavity 2. The reset spring is slidably sleeved on the outer side surface of the left end of the bushing, and the left end of the reset spring abuts against the annular eaves 2 at the left end of the bushing, and the right end abuts against the left end surface of the stage 2. The right end of the shell has a ring plate assembly for limiting the electromagnetic coil mounting sleeve and the execution sleeve to the inside of the shell cavity.

[0006] The utility model discloses an independent self-returning electromagnetic actuator for an electromagnetic clutch, which integrates a reset spring inside the electromagnetic actuator and cleverly improves the structures and assembly relationships of the components. Compared with the traditional structure of a return spring outside the electromagnetic actuator, the number of components is effectively reduced, so that the overall volume of the independent self-returning electromagnetic actuator is significantly reduced, the total weight is significantly reduced, and the manufacturing cost is lower. The overall structural design of the independent self-returning electromagnetic actuator is compact and reasonable, and it is also suitable for extreme application scenarios with narrow space, laying a foundation for the overall layout optimization of the electromagnetic clutch, and the preparation and implementation is highly feasible and economical.

[0007] The preferred technical solution is that a step 1 is milled on the outer side surface of the right end of the bushing, and the right end of the actuator sleeve has an annular eaves body 1 radially extending into its internal cavity, and the actuator sleeve is fixedly arranged on the outer side surface of the right end of the bushing by interference sleeve, and the annular eaves body 1 is clamped on the left shoulder of the step 1. The annular eaves body 1 at the right end of the actuator sleeve and the left shoulder of the step 1 at the right end of the bushing are clamped together, which improves the assembly tightness between the actuator sleeve and the bushing, effectively prevents the relative sliding displacement between the two, and ensures that the independent self-returning electromagnetic actuator of the utility model has long-term self-returning accuracy and reliability.

[0008] A further preferred technical solution is that a step groove 2 is milled on the inner wall surface of the right end of the shell, the ring plate assembly includes an annular fixing plate and an annular thrust plate, the annular fixing plate has a notch groove 1 on the outer periphery, a plurality of locating pins extending to the right are fixedly arranged on the annular fixing plate in an circumferential direction, a notch groove 2 corresponding to the notch groove 1 is fixedly arranged on the outer periphery of the annular thrust plate, a plurality of locating holes are fixedly arranged on the annular thrust plate in an circumferential direction, the locating pins are connected to the inside of the locating holes one by one, and the left side of the annular thrust plate has a notch groove surrounding the outer periphery of the center hole The outer periphery of the annular fixing plate and the outer periphery of the annular thrust plate are both embedded and fixed inside the step groove 2 on the shell, and the inner edge surface of the annular fixing plate is gap-matched with the outer side surface of the right end of the actuator sleeve, and the inner edge surface of the annular thrust plate is gap-matched with the outer side surface of the step groove 1. The right end surface of the electromagnetic coil installation sleeve abuts against the left side surface of the annular fixing plate, and the right end edge of the actuator sleeve is correspondingly matched with the step groove 1. The outlet pipe located at the right end of the electromagnetic coil installation sleeve passes through the notch groove 1 and the notch groove 2 and extends to the right side of the annular thrust plate. The structural design of the ring plate assembly is ingenious and reasonable. The annular fixing plate plays a limiting role on the electromagnetic coil installation sleeve, and the annular thrust plate plays a limiting role on the actuator sleeve, thereby ensuring that the independent self-returning electromagnetic actuator of the utility model can be smoothly prepared and implemented.

[0009] A further preferred technical solution is that a quick-connect connector is provided on the outer end of the outlet pipe. A quick-connect connector connected to the internal cable is provided on the outer end of the outlet pipe, thereby helping to improve the convenience and efficiency of assembly between the independent self-returning electromagnetic actuator of the utility model and other components when in use.

[0010] A further preferred technical solution is that the left end of the shell is radially bent to form a step three extending into the cavity thereof, and the annular eaves body 2 is located at the left end of the step three.

[0011] The advantages and beneficial effects of the utility model are:

[0012] 1. The utility model discloses an independent self-returning electromagnetic actuator for an electromagnetic clutch. By integrating a reset spring into the interior of the electromagnetic actuator and ingeniously improving the structure and assembly relationship of each component, the number of components is effectively reduced compared with the traditional return spring structure constructed outside the electromagnetic actuator, so that the overall volume of the independent self-returning electromagnetic actuator is significantly reduced, the total weight is significantly reduced, and the manufacturing cost is lower. The overall structural design of the independent self-returning electromagnetic actuator is compact and reasonable, and it is also applicable to extreme application scenarios with narrow space, laying a foundation for the overall layout optimization of the electromagnetic clutch, and the preparation and implementation are highly feasible and economical.

[0013] 2. The annular eaves 1 at the right end of the actuator sleeve is snap-fitted with the left shoulder of the platform stage 1 at the right end of the bushing, which improves the assembly tightness between the actuator sleeve and the bushing, effectively prevents relative sliding displacement between the two, and ensures that the independent self-returning electromagnetic actuator of the utility model has long-term self-returning accuracy and reliability.

[0014] 3. The structural design of the ring plate assembly is ingenious and reasonable. The annular fixing plate limits the electromagnetic coil installation sleeve, and the annular thrust plate limits the execution sleeve, thereby ensuring that the independent self-returning electromagnetic actuator of the utility model can be smoothly prepared and implemented.

[0015] 4. A quick-connect connector connected to the internal cable is provided on the outer end of the outlet pipe, thereby helping to improve the convenience and efficiency of assembly between the independent self-returning electromagnetic actuator of the utility model and other components when in use. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional structural schematic diagram of an independent self-returning electromagnetic actuator for an electromagnetic clutch of the utility model from the right front side perspective;

[0017] Figure 2 It is a three-dimensional structural schematic diagram of an independent self-returning electromagnetic actuator for an electromagnetic clutch of the utility model from a left rear side perspective;

[0018] Figure 3 It is a schematic diagram of the split structure of an independent self-returning electromagnetic actuator for an electromagnetic clutch in the utility model along the axis direction;

[0019] Figure 4 It is a longitudinal cross-sectional view along the axis direction of an independent self-returning electromagnetic actuator for an electromagnetic clutch of the utility model;

[0020] Figure 5 yes Figure 4 A partial enlarged view of point H in the middle.

[0021] In the figure: 1. bushing; 2. reset spring; 3. electromagnetic coil mounting sleeve; 4. execution sleeve; 5. annular fixing plate; 6. annular thrust plate; 7. housing; Ⅰ. annular cavity one; Ⅱ. annular cavity two; 1-1. step one; 3-1. annular groove; 3-2. outlet pipe; 3-3. quick connector; 4-1. annular eaves one; 4-2. step two; 5-1. notch groove one; 5-2. positioning pin; 6-1. notch groove two; 6-2. positioning hole; 6-3. step groove one; 7-1. step groove two; 7-2. step three; 7-3. annular eaves two. DETAILED DESCRIPTION

[0022] The following is a further description of the specific implementation of the present invention in conjunction with the accompanying drawings and embodiments. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and cannot be used to limit the protection scope of the present invention.

[0023] Example

[0024] like Figures 1 to 5 As shown, the utility model is an independent self-returning electromagnetic actuator for an electromagnetic clutch, comprising a bushing 1, a reset spring 2, an electromagnetic coil mounting sleeve 3, an actuator sleeve 4 and a shell 7, wherein the left end of the shell 7 has an annular eaves body 7-3 radially extending into its internal cavity, the bushing 1 passes through the internal cavity of the shell 7, and the inner edge surface of the annular eaves body 7-3 is clearance-matched with the outer side surface of the left end of the bushing 1, the actuator sleeve 4 is sleeved and fixedly arranged on the outer side surface of the right end of the bushing 1, the electromagnetic coil mounting sleeve 3 is embedded on the inner wall surface of the right end of the shell 7, and the outer peripheral side surface of the electromagnetic coil mounting sleeve 3 is provided with an annular groove 3-1, and the annular groove 3-1 and the inner wall surface of the right end of the shell 7 are enclosed to form a ring shaped cavity Ⅰ, an electromagnetic induction coil (not shown) is embedded in the annular cavity Ⅰ, the inner wall surface of the left end of the shell 7 and the outer side surface of the left end of the bushing 1 are enclosed to form an annular cavity Ⅱ opening to the right, the left end surface of the execution sleeve 4 has a stage 2 4-2 extending coaxially to the left, and the stage 2 4-2 is adapted to the annular cavity Ⅱ, the reset spring 2 is slidably sleeved on the outer side surface of the left end of the bushing 1, and the left end of the reset spring 2 abuts on the annular eaves 2 7-3 at the left end of the bushing 1, and the right end abuts on the left end surface of the stage 2 4-2, and the right end of the shell 7 has a ring plate assembly for limiting the electromagnetic coil mounting sleeve 3 and the execution sleeve 4 to the inside of the cavity of the shell 7.

[0025] Preferably, a step 1-1 is milled on the outer side surface of the right end of the bushing 1, and the right end of the actuator sleeve 4 has an annular eaves 4-1 extending radially into its internal cavity. The actuator sleeve 4 is fixedly arranged on the outer side surface of the right end of the bushing 1 by interference fitting, and the annular eaves 4-1 is clamped on the left shoulder of the step 1-1.

[0026] Further preferably, a step groove 2 7-1 is milled on the inner wall surface of the right end of the shell 7, and the ring plate assembly includes an annular fixing plate 5 and an annular thrust plate 6. The annular fixing plate 5 has a notch groove 1 5-1 on the outer periphery, and a plurality of positioning pins 5-2 extending to the right are fixedly arranged on the annular fixing plate 5 in an annular direction at intervals, and a notch groove 2 6-1 corresponding to the notch groove 1 5-1 is provided on the outer periphery of the annular thrust plate 6. A plurality of positioning holes 6-2 are fixedly arranged on the annular thrust plate 6 in an annular direction at intervals, and the positioning pins 5-2 are connected to the inside of the positioning holes 6-2 one by one, and the left side of the annular thrust plate 6 has a step surrounding the outer periphery of its center hole. Groove 1 6-3, the outer periphery of the annular fixing plate 5 and the outer periphery of the annular thrust plate 6 are both embedded and fixed inside the step groove 2 7-1 on the shell 7, and the inner end edge surface of the annular fixing plate 5 is clearance-matched with the outer side surface of the right end of the execution sleeve 4, and the inner end edge surface of the annular thrust plate 6 is clearance-matched with the outer side surface of the step 1-1, the right end surface of the electromagnetic coil installation sleeve 3 abuts against the left side surface of the annular fixing plate 5, the right end edge of the execution sleeve 4 is correspondingly adapted to the step groove 1 6-3, and the outlet tube 3-2 located at the right end of the electromagnetic coil installation sleeve 3 passes through the notch groove 1 5-1 and the notch groove 2 6-1 and extends to the right side of the annular thrust plate 6.

[0027] Further preferably, a quick-connect connector 3-3 is provided on the outer end of the outlet pipe 3-2.

[0028] Further preferably, the left end of the shell 7 is radially bent to have a stage three 7-2 extending into the interior of the cavity, and the annular eaves body 2 7-3 is located at the left end of the stage three 7-2.

[0029] The working principle of an independent self-returning electromagnetic actuator for an electromagnetic clutch in the utility model is as follows:

[0030] When in use, a movable gear sleeve is installed at the left end of the bushing 1, and the movable gear sleeve is adapted to the fixed gear sleeve. Figure 4 As shown, in the initial state, the electromagnetic coil (not shown in the figure) installed inside the annular cavity I is in a power-off state. At this time, under the elastic driving force of the reset spring 2, the right end edge surface of the actuator sleeve 4 abuts against the bottom surface of the step groove 6-3 of the annular thrust plate 6, the stage 2 4-2 is located on the right side outside the opening of the annular cavity II, and the movable gear sleeve located at the left end of the sleeve 1 is separated from the fixed gear sleeve, and the clutch is in a disengaged state; when the electromagnetic coil installed inside the annular cavity I is in a power-on state, at this time, the electromagnetic suction force of the electromagnetic coil is greater than the elastic driving force of the reset spring 2, so that the actuator sleeve 4 drives the sleeve 1 and the movable gear sleeve to move to the left under the electromagnetic suction force of the electromagnetic coil until the movable gear sleeve is engaged with the fixed gear sleeve, and the stage 2 4-2 is inserted into the inside of the annular cavity II, and the clutch is in an engaged state.

[0031] The utility model discloses an independent self-returning electromagnetic actuator for an electromagnetic clutch, which integrates a reset spring inside the electromagnetic actuator and cleverly improves the structures and assembly relationships of the components. Compared with the traditional structure of a return spring outside the electromagnetic actuator, the number of components is effectively reduced, so that the overall volume of the independent self-returning electromagnetic actuator is significantly reduced, the total weight is significantly reduced, and the manufacturing cost is lower. The overall structural design of the independent self-returning electromagnetic actuator is compact and reasonable, and it is also suitable for extreme application scenarios with narrow space, laying a foundation for the overall layout optimization of the electromagnetic clutch, and the preparation and implementation is highly feasible and economical.

[0032] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. An independent self-returning electromagnetic actuator for an electromagnetic clutch, characterized in that: The invention comprises a bushing (1), a reset spring (2), an electromagnetic coil installation sleeve (3), an execution sleeve (4) and a shell (7), wherein the left end of the shell (7) has an annular eaves body (7-3) radially extending into its internal cavity, the bushing (1) passes through the internal cavity of the shell (7), and the inner edge surface of the annular eaves body (7-3) is clearance-matched with the outer side surface of the left end of the bushing (1), the execution sleeve (4) is sleeve-connected and fixedly arranged on the outer side surface of the right end of the bushing (1), the electromagnetic coil installation sleeve (3) is embedded on the inner wall surface of the right end of the shell (7), the outer peripheral side surface of the electromagnetic coil installation sleeve (3) is provided with an annular groove (3-1), the annular groove (3-1) and the inner wall surface of the right end of the shell (7) enclose an annular cavity (I), the annular An electromagnetic induction coil is embedded in the cavity one (I), the inner wall surface of the left end of the shell (7) and the outer surface of the left end of the bushing (1) are combined to form an annular cavity two (II) with an opening facing the right side, the left end surface of the execution sleeve (4) has a stage two (4-2) extending coaxially to the left side, and the stage two (4-2) is adapted to the annular cavity two (II), the reset spring (2) is slidably sleeved on the outer surface of the left end of the bushing (1), and the left end of the reset spring (2) abuts against the annular eaves two (7-3) at the left end of the bushing (1), and the right end abuts against the left end surface of the stage two (4-2), and the right end of the shell (7) has a ring plate assembly for limiting the electromagnetic coil mounting sleeve (3) and the execution sleeve (4) in the cavity of the shell (7).

2. The independent self-returning electromagnetic actuator for an electromagnetic clutch according to claim 1, characterized in that: The outer side surface of the right end of the bushing (1) is milled with a step-shaped portion (1-1), and the right end of the execution sleeve (4) has an annular eaves (4-1) extending radially into its internal cavity. The execution sleeve (4) is fixedly mounted on the outer side surface of the right end of the bushing (1) by interference fitting, and the annular eaves (4-1) is clamped on the left shoulder of the step-shaped portion (1-1).

3. The independent self-returning electromagnetic actuator for an electromagnetic clutch according to claim 2, characterized in that: The inner wall surface of the right end of the shell (7) is milled with a step groove 2 (7-1), and the ring plate assembly includes an annular fixing plate (5) and an annular thrust plate (6). The outer periphery of the annular fixing plate (5) is provided with a notch groove 1 (5-1), and the annular fixing plate (5) is provided with a plurality of locating pins (5-2) extending to the right side at an annular interval. The outer periphery of the annular thrust plate (6) is provided with a notch groove 2 (6-1) corresponding to the notch groove 1 (5-1), and the annular thrust plate (6) is provided with a plurality of locating holes (6-2) at an annular interval. The locating pins (5-2) are connected to the inside of the locating holes (6-2) one by one, and the left side of the annular thrust plate (6) is provided with a step groove 1 (6-1) surrounding the outer periphery of its center hole. -3), the outer periphery of the annular fixing plate (5) and the outer periphery of the annular thrust plate (6) are both embedded and fixed inside the step groove 2 (7-1) on the shell (7), and the inner end edge surface of the annular fixing plate (5) is clearance-matched with the outer side surface of the right end of the execution sleeve (4), and the inner end edge surface of the annular thrust plate (6) is clearance-matched with the outer side surface of the step 1 (1-1), the right end surface of the electromagnetic coil installation sleeve (3) abuts against the left side surface of the annular fixing plate (5), the right end edge of the execution sleeve (4) is correspondingly adapted to the step groove 1 (6-3), and the outlet pipe (3-2) located at the right end of the electromagnetic coil installation sleeve (3) passes through the notch groove 1 (5-1) and the notch groove 2 (6-1) and extends to the right side of the annular thrust plate (6).

4. The independent self-returning electromagnetic actuator for an electromagnetic clutch according to claim 3, characterized in that: The outer end of the outlet pipe (3-2) is provided with a quick-insert connector (3-3).

5. The independent self-returning electromagnetic actuator for an electromagnetic clutch according to claim 4, characterized in that: The left end of the shell (7) is radially bent to form a step portion three (7-2) extending into the interior of the cavity, and the annular eaves body two (7-3) is located at the left end portion of the step portion three (7-2).

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