Electromagnetic clutch actuating mechanism

Abstract

The utility model provides an electromagnetic clutch actuating mechanism. The electromagnetic clutch actuating mechanism comprises a driving shaft, a driven shaft, a clutch sleeve and a driving part, the driving shaft and the driven shaft are coaxially arranged, the clutch sleeve is coaxially connected between the driving shaft and the driven shaft in a sleeved mode and is arranged in the axial direction in a moving mode, and the driving component is used for driving the clutch sleeve to move in the axial direction. The rear section of the clutch sleeve is in transmission connection with the driven shaft, a spline groove is formed in the inner wall of the front section of the clutch sleeve in the axial direction, and a spline protrusion matched with the spline groove is arranged on the outer wall of the driving shaft; when the driving part drives the clutch sleeve to move forwards, the spline groove is connected with the spline protrusion in a matched mode, so that the driving shaft is in transmission connection with the clutch sleeve. And when the driving part drives the clutch sleeve to move backwards, the spline groove is separated from the spline bulge, so that the transmission of the driving shaft and the clutch sleeve is disconnected. According to the mechanism, the driving shaft and the driven shaft are reliably combined, and the transmission reliability is improved.

Description

Technical Field

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

[0002] A transmission clutch is a power control device used to connect and disconnect power between the output and input ends of a transmission mechanism. It is widely used in automotive and other fields. Currently, commercially available clutches typically utilize a compression-friction coupling to achieve mutual transmission between the driving and driven shafts. This coupling can lead to friction and slippage over long periods of operation, reducing transmission reliability between the driving and driven shafts and impacting equipment operation. Utility Model Content

[0003] The technical problem to be solved by the present invention is that the extrusion friction combination mode in the clutch structure is prone to slippage, which reduces the transmission reliability. In order to overcome the above defects of the existing technology, the present invention provides an electromagnetic clutch actuator.

[0004] The utility model provides an electromagnetic clutch actuator, comprising a driving shaft, a driven shaft, a clutch sleeve and a driving component; the driving shaft and the driven shaft are coaxially arranged, the clutch sleeve is coaxially sleeved between the driving shaft and the driven shaft and is arranged to move axially, and the driving component is used to drive the clutch sleeve to move axially; the rear section of the clutch sleeve is transmission-connected with the driven shaft, the inner wall of the front section of the clutch sleeve is provided with a spline groove arranged axially, and the outer wall of the driving shaft is provided with a spline protrusion matching the spline groove; when the driving component drives the clutch sleeve to move forward, the spline groove and the spline protrusion are matched and connected, so that the driving shaft and the clutch sleeve are transmission-connected; when the driving component drives the clutch sleeve to move backward, the spline groove and the spline protrusion are separated, so that the driving shaft and the clutch sleeve are transmission-disconnected.

[0005] Compared with the prior art, the electromagnetic clutch actuator disclosed in the present application has the following advantages: by sleeve-connecting a coaxially arranged clutch sleeve between the driving shaft and the driven shaft, the clutch sleeve can move axially; when the driving component drives the clutch sleeve to move forward, the spline groove of the clutch sleeve cooperates with the spline protrusion of the driving shaft, so that the driving shaft and the clutch sleeve are transmission-connected, that is, the driving shaft and the driven shaft are mutually transmission-matched; when the driving component drives the clutch sleeve to move backward, the spline groove of the clutch sleeve separates from the spline protrusion of the driving shaft, so that the driving shaft and the clutch sleeve are transmission-disconnected, that is, the transmission between the driving shaft and the driven shaft is interrupted, thereby realizing the mutual clutching of the driving shaft and the driven shaft, replacing the extrusion friction combination mode, and improving the reliability and stability of the transmission.

[0006] In a possible embodiment, a transmission tooth groove extending in the axial direction is provided on the inner wall of the clutch sleeve, and a transmission cam extending in the axial direction is provided on the driven shaft, and the transmission cam is inserted in the transmission tooth groove in the axial direction.

[0007] Compared with the existing technology, the above technical solution can realize the transmission connection between the clutch sleeve and the driven shaft, and at the same time, when the clutch sleeve moves in the axial direction, the two can always maintain transmission cooperation.

[0008] In a possible implementation manner, there are a plurality of transmission tooth grooves and transmission protruding teeth, and the transmission teeth are evenly spaced and distributed along the circumferential direction.

[0009] Compared with the existing technology, the above technical solution can improve the transmission reliability between the clutch sleeve and the driven shaft.

[0010] In a possible implementation, there are multiple spline grooves that are evenly distributed along the circumference, there are multiple spline protrusions that are evenly distributed along the circumference, and the axial length of the spline groove is set to be the same as the axial length of the spline protrusion.

[0011] Compared with the existing technology, the above technical solution can improve the transmission connection stability between the clutch sleeve and the driving shaft, while ensuring that the spline groove and the spline protrusion are completely separated.

[0012] In a possible implementation manner, an avoidance ring groove for avoiding the spline protrusion is further provided on the inner wall of the clutch sleeve.

[0013] Compared with the prior art, the above technical solution can ensure that the spline protrusion and the spline groove are completely separated, and avoid mutual interference after separation.

[0014] In a possible implementation, a plurality of groups of spline grooves are provided on the inner wall of the front section of the clutch sleeve at intervals along the axial direction, and a plurality of groups of spline protrusions are provided on the outer wall of the driving shaft at intervals along the axial direction.

[0015] Compared with the existing technology, the above technical solution can improve the transmission reliability of the clutch sleeve and the driving shaft.

[0016] In one possible embodiment, the driving component includes a fixed electromagnetic coil assembly, a movable armature and a transition connecting ring, the transition connecting ring is fixedly sleeved on the clutch sleeve, the movable armature is fixedly connected to the transition connecting ring, and the fixed electromagnetic coil assembly is used to drive the movable armature to move axially.

[0017] Compared with the existing technology, the above technical solution can reliably drive the axial movement of the clutch sleeve with high movement precision and stability.

[0018] In a possible implementation, the driving component further includes a return spring, which is sleeved on the clutch sleeve, with a front end of the return spring connected to the clutch sleeve and a rear end of the return spring connected to the driven shaft.

[0019] Compared with the prior art, the above technical solution can enable the clutch sleeve to move and reset, thereby improving the reaction speed of the clutch mechanism.

[0020] In a possible implementation manner, the clutch sleeve is provided with a limiting waist-shaped hole extending in the axial direction, the driven shaft is provided with a limiting pin, and the limiting pin is arranged in the limiting waist-shaped hole.

[0021] Compared with the prior art, the above technical solution can limit the axial movement distance of the clutch sleeve, prevent the clutch sleeve from moving out along the axial direction, and improve the connection reliability.

[0022] In a possible implementation, a limiting pawl is provided on the rear end surface of the clutch sleeve, a limiting groove extending in the axial direction is provided on the driven shaft, and the limiting pawl is disposed in the limiting groove.

[0023] Compared with the prior art, the above technical solution can limit the axial movement distance of the clutch sleeve, prevent the clutch sleeve from moving out along the axial direction, and improve the connection reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic diagram of the overall structure of Example 1;

[0025] Figure 2 is a cross-sectional view of Example 1;

[0026] Figure 3 This is a schematic structural diagram of the driving shaft of Example 1;

[0027] Figure 4 Schematic diagram of the structure of the driven shaft of embodiment 1;

[0028] Figure 5 Schematic diagram of the structure of the clutch sleeve of Example 1 Figure 1 ;

[0029] Figure 6 Schematic diagram of the structure of the clutch sleeve of Example 1 Figure 2 ;

[0030] Figure 7 is a cross-sectional view of Example 2;

[0031] Figure 8 This is a schematic structural diagram of the clutch sleeve of Example 2;

[0032] Figure 9This is a schematic structural diagram of the driven shaft of Example 2;

[0033] Description of reference numerals:

[0034] 1. Driving shaft; 11. Spline protrusion; 2. Driven shaft; 21. Transmission cam; 22. Limit pin; 23. Limit groove; 3. Clutch sleeve; 31. Spline groove; 32. Transmission tooth groove; 33. Avoidance ring groove; 34. Limit waist hole; 35. Limit pawl; 4. Driving component; 41. Fixed electromagnetic coil assembly; 42. Moving armature; 43. Transition connecting ring; 44. Return spring. DETAILED DESCRIPTION

[0035] First, those skilled in the art should understand that these embodiments are merely used to explain the technical principles of the embodiments of the present application and are not intended to limit the scope of protection of the embodiments of the present application. Those skilled in the art may adjust them as needed to suit specific application scenarios.

[0036] In the description of the embodiments of this application, it should be noted that, unless otherwise specified or limited, the terms "connected" and "connection" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium. Those skilled in the art will understand the specific meanings of the above terms in the embodiments of this application based on the specific circumstances.

[0037] In the embodiments of the present application, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Furthermore, a first feature being "above," "above," and "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0038] The present application is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0039] Example 1

[0040] See also Figures 1 to 6The embodiment of the present application discloses an electromagnetic clutch actuator, comprising a driving shaft 1, a driven shaft 2, a clutch sleeve 3 and a driving component 4; the driving shaft 1 and the driven shaft 2 are coaxially arranged, the clutch sleeve 3 is coaxially sleeved between the driving shaft 1 and the driven shaft 2 and is arranged to move axially, and the driving component 4 is used to drive the clutch sleeve 3 to move axially; the rear section of the clutch sleeve 3 is always transmission-connected with the driven shaft 2, and the inner wall of the front section of the clutch sleeve 3 is provided with an axially arranged spline groove 31, and the outer wall of the driving shaft 1 is provided with a spline protrusion 11 matching the spline groove 31; when the driving component 4 drives the clutch sleeve 3 to move forward, the spline groove 31 is matched with the spline protrusion 11 to connect the driving shaft 1 and the clutch sleeve 3; when the driving component 4 drives the clutch sleeve 3 to move backward, the spline groove 31 is separated from the spline protrusion 11, so that the driving shaft 1 and the clutch sleeve 3 are transmission-disconnected. A rotary bearing is provided between the driving shaft 1 and the driven shaft 2 .

[0041] In the actual application of the present application, the driving shaft 1 is connected to the angle adjustment mechanism, which is a prior art and is used to adjust the rotation angle of the driving shaft 1, that is, to facilitate the axial insertion of the spline protrusion 11 of the driving shaft 1 into the spline groove 31 of the clutch sleeve 3.

[0042] As can be seen from the above, by sleeve-fitting the coaxially arranged clutch sleeve 3 between the driving shaft 1 and the driven shaft 2, the clutch sleeve 3 can move axially. When the driving component 4 drives the clutch sleeve 3 to move forward, the spline groove 31 of the clutch sleeve 3 cooperates with the spline protrusion 11 of the driving shaft 1, so that the driving shaft 1 and the clutch sleeve 3 are transmission-connected, that is, the driving shaft 1 and the driven shaft 2 are transmission-matched with each other. When the driving component 4 drives the clutch sleeve 3 to move backward, the spline groove 31 of the clutch sleeve 3 separates from the spline protrusion 11 of the driving shaft 1, so that the driving shaft 1 and the clutch sleeve 3 are transmission-disconnected, that is, the transmission between the driving shaft 1 and the driven shaft 2 is interrupted, thereby realizing the mutual clutch of the driving shaft 1 and the driven shaft 2, replacing the extrusion friction combination mode, and improving the reliability and stability of the transmission.

[0043] Continue to see Figure 2 、 Figure 4 and Figure 6 In this embodiment, the clutch sleeve 3 has an inner wall formed with axially extending transmission tooth grooves 32, and the driven shaft 2 has axially extending transmission teeth 21. The transmission teeth 21 are axially inserted into the transmission tooth grooves 32, thereby achieving a transmission connection between the clutch sleeve 3 and the driven shaft 2. Furthermore, when the clutch sleeve 3 moves axially, the two maintain transmission coordination. Specifically, there are multiple transmission tooth grooves 32 and transmission teeth 21, each evenly spaced along the circumference, improving transmission reliability between the clutch sleeve 3 and the driven shaft 2.

[0044] In this embodiment, there are multiple spline grooves 31 and they are evenly distributed along the circumference, there are multiple spline protrusions 11 and they are evenly distributed along the circumference, and the axial length of the spline grooves 31 is set to be the same as the axial length of the spline protrusions 11, thereby improving the transmission connection stability between the clutch sleeve 3 and the driving shaft 1, and at the same time ensuring that the spline grooves 31 and the spline protrusions 11 are completely separated.

[0045] In this embodiment, multiple sets of spline grooves 31 are axially spaced apart on the inner wall of the front section of the clutch sleeve 3, and multiple sets of spline protrusions 11 are axially spaced apart on the outer wall of the driving shaft 1. This improves the transmission reliability between the clutch sleeve 3 and the driving shaft 1. The inner wall of the clutch sleeve 3 is also provided with an escape groove 33 for circumventing the spline protrusions 11. This ensures complete separation of the spline protrusions 11 from the spline grooves 31 and avoids mutual interference after separation. The axial length of the escape groove 33 is greater than the axial length of the spline protrusions 11.

[0046] Continue to see Figure 2 In this embodiment, the drive component 4 includes a fixed electromagnetic coil assembly 41, a movable armature 42, and a transition ring 43. The transition ring 43 is fixedly mounted on the clutch sleeve 3, and the movable armature 42 is fixedly connected to the transition ring 43. The fixed electromagnetic coil assembly 41 is used to drive the movable armature 42 to move axially, thereby reliably driving the axial movement of the clutch sleeve 3 with high precision and stability. The drive component 4 also includes a return spring 44, which is mounted on the clutch sleeve 3. The front end of the return spring 44 is connected to the clutch sleeve 3, and the rear end of the return spring 44 is connected to the driven shaft 2. This resets the clutch sleeve 3 and improves the response speed of the mechanism's clutch. The movable armature 42 is made of a soft magnet.

[0047] In this embodiment, the clutch sleeve 3 is provided with a limiting waist-shaped hole 34 extending in the axial direction, and the driven shaft 2 is provided with a limiting pin 22. The limiting pin 22 is arranged in the limiting waist-shaped hole 34, thereby limiting the axial movement distance of the clutch sleeve 3, preventing the clutch sleeve 3 from moving out in the axial direction, and improving the connection reliability.

[0048] Example 2

[0049] like Figures 7 to 9 As shown, the difference between this embodiment and the first embodiment is that a limiting claw 35 is provided on the rear end surface of the clutch sleeve 3, and a limiting groove 23 extending in the axial direction is provided on the driven shaft 2. The limiting claw 35 is arranged in the limiting groove 23, thereby limiting the axial movement distance of the clutch sleeve 3, preventing the clutch sleeve 3 from moving out in the axial direction, and improving the connection reliability.

[0050] In the description of the embodiments of the present application, it should be noted that in the description of the present application, terms such as "inside" and "outside" indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings. This is only for the convenience of description and does not indicate or imply that the device or component must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the present application.

[0051] In the description of the present application, the description with reference to the terms "one embodiment", "some embodiments", "in the present embodiment", "specific example", or "some examples" means that the specific features, mechanisms, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, mechanisms, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and the features of different embodiments or examples, unless they are contradictory.

[0052] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present application should be included in the scope of protection of the present application. Therefore, the scope of protection of the present application should be based on the scope of protection of the claims.

Claims

1. An electromagnetic clutch actuator, characterized in that: The invention comprises a driving shaft (1), a driven shaft (2), a clutch sleeve (3) and a driving component (4); the driving shaft (1) and the driven shaft (2) are coaxially arranged, the clutch sleeve (3) is coaxially sleeved between the driving shaft (1) and the driven shaft (2) and is arranged to move in the axial direction, and the driving component (4) is used to drive the clutch sleeve (3) to move in the axial direction; the rear section of the clutch sleeve (3) is transmission-connected to the driven shaft (2), and the inner wall of the front section of the clutch sleeve (3) is provided with a spline groove (31) arranged in the axial direction. A spline protrusion (11) matching the spline groove (31) is provided on the outer wall of the driving shaft (1); when the driving component (4) drives the clutch sleeve (3) to move forward, the spline groove (31) and the spline protrusion (11) are matched and connected, so that the driving shaft (1) and the clutch sleeve (3) are transmission-connected; when the driving component (4) drives the clutch sleeve (3) to move backward, the spline groove (31) and the spline protrusion (11) are separated, so that the driving shaft (1) and the clutch sleeve (3) are transmission-disconnected.

2. The electromagnetic clutch actuator according to claim 1, characterized in that: A transmission tooth groove (32) extending in the axial direction is provided on the inner wall of the clutch sleeve (3), and a transmission cam (21) extending in the axial direction is provided on the driven shaft (2), and the transmission cam (21) is inserted in the transmission tooth groove (32) in the axial direction.

3. The electromagnetic clutch actuator according to claim 2, characterized in that: There are a plurality of transmission tooth grooves (32) and transmission protruding teeth (21), which are evenly spaced and distributed along the circumference.

4. The electromagnetic clutch actuator according to claim 1, characterized in that: There are a plurality of spline grooves (31) uniformly distributed along the circumference, there are a plurality of spline protrusions (11) uniformly distributed along the circumference, and the axial length of the spline grooves (31) is set to be the same as the axial length of the spline protrusions (11).

5. The electromagnetic clutch actuator according to claim 4, characterized in that: A plurality of groups of spline grooves (31) are provided on the inner wall of the front section of the clutch sleeve (3) at intervals along the axial direction, a plurality of groups of spline protrusions (11) are provided on the outer wall of the driving shaft (1) at intervals along the axial direction, and an avoidance ring groove (33) for avoiding the spline protrusions (11) is also provided on the inner wall of the clutch sleeve (3).

6. The electromagnetic clutch actuator according to claim 1, characterized in that: The driving component (4) comprises a fixed electromagnetic coil assembly (41), a movable armature (42) and a transition connecting ring (43); the transition connecting ring (43) is fixedly sleeved on the clutch sleeve (3); the movable armature (42) is fixedly connected to the transition connecting ring (43); and the fixed electromagnetic coil assembly (41) is used to drive the movable armature (42) to move axially.

7. The electromagnetic clutch actuator according to claim 6, characterized in that: The driving component (4) further comprises a return spring (44), wherein the return spring (44) is sleeved on the clutch sleeve (3), the front end of the return spring (44) is connected to the clutch sleeve (3), and the rear end of the return spring (44) is connected to the driven shaft (2).

8. The electromagnetic clutch actuator according to claim 1, characterized in that: The clutch sleeve (3) is provided with a limiting waist-shaped hole (34) extending in the axial direction, and the driven shaft (2) is provided with a limiting pin (22), and the limiting pin (22) is arranged in the limiting waist-shaped hole (34).

9. The electromagnetic clutch actuator according to claim 1, characterized in that: A limiting pawl (35) is provided on the rear end surface of the clutch sleeve (3), and a limiting groove (23) extending in the axial direction is provided on the driven shaft (2), and the limiting pawl (35) is arranged in the limiting groove (23).

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