Electromagnetic jaw clutch

Abstract

The utility model relates to the technical field of clutches, in particular to an electromagnetic jaw clutch which comprises an engine input shaft, a motor driving gear, an engine gear, a clutch combination disc, an execution assembly and an electromagnetic coil assembly. The motor driving gear is fixedly arranged on the engine input shaft, and the engine gear is located on one side of the motor driving gear. The clutch combination disc is located on the side, away from the motor driving gear, of the engine gear. The execution assembly is sleeved on the clutch combination disc; and the electromagnetic coil assembly is fixedly connected with the outer shell. The electromagnetic jaw clutch is installed on the engine input shaft, the electromagnetic coil assembly is powered on to control the execution assembly to push the clutch to be combined, the clutch combination disc is embedded with an engine gear, and after the electromagnetic coil assembly is powered off, the clutch combination disc is separated from the engine gear. The cost is low.

Description

Technical Field

[0001] The utility model relates to the technical field of clutches, and particularly relates to an electromagnetic jaw clutch. Background Art

[0002] The jaw electromagnetic clutch, also known as a toothed electromagnetic clutch, has the advantages of high transmission efficiency, less heat generation, and high reliability, and is widely used in hybrid vehicles. For example, a Chinese patent with the publication number CN202091401U discloses a jaw electromagnetic clutch. However, the existing jaw electromagnetic clutch has a complex structure and high production costs. Content of the Utility Model

[0003] Aiming at the deficiencies of the existing technology, the utility model provides an electromagnetic jaw clutch. By energizing the electromagnetic coil assembly to control the actuator assembly to push the clutch to engage, the clutch engagement disc is engaged with the engine gear. After the electromagnetic coil assembly is de-energized, the clutch engagement disc is separated from the engine gear. Compared with the traditional wet friction plate clutch, it is lighter in weight and lower in cost.

[0004] The technical solution of the utility model is as follows:

[0005] An electromagnetic jaw clutch includes an engine input shaft, a motor driving gear, an engine gear, a clutch engagement disc, an actuator assembly, and an electromagnetic coil assembly;

[0006] The motor driving gear is fixedly arranged on the engine input shaft. The engine gear is located on one side of the motor driving gear and is rotatably connected to the engine input shaft;

[0007] The clutch engagement disc is located on the side of the engine gear away from the motor driving gear and is axially slidably connected to the engine input shaft. The clutch engagement disc is used to engage with the motor driving gear;

[0008] The actuator assembly is sleeved on the clutch engagement disc and is rotatably connected to the clutch engagement disc. One side of the actuator assembly facing the engine gear is used to abut against the clutch engagement disc;

[0009] The electromagnetic coil assembly is fixedly connected to the external housing and is used to drive the clutch engagement disc to engage with the engine gear through the actuator assembly.

[0010] In summary, the above technical solutions have the following beneficial effects: The electromagnetic dog clutch of the present application is installed on the engine input shaft to achieve the functions of controlling the rigid connection and disconnection between the input shaft and the engine gear. The advantages of the present application include: 1. The electromagnetic clutch is lighter in weight and lower in cost compared with the traditional wet friction plate clutch. 2. The electromagnetic dog clutch has the advantages of fast response, high efficiency and large torque-bearing capacity when achieving power interruption. 3. The control strategy of the electromagnetic dog clutch is simple and is easy to be implemented in harsh occasions such as various automotive passenger vehicle transmissions. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 Schematic diagram of the motor driving gear of an electromagnetic dog clutch;

[0012] Figure 2 Schematic cross-sectional view of an electromagnetic dog clutch;

[0013] Figure 3 Schematic diagram of the engaging teeth of an electromagnetic dog clutch;

[0014] Figure 4 Schematic diagram of the dog teeth of an electromagnetic dog clutch;

[0015] Figure 5 Schematic diagram of the left limit ring and the right limit ring of an electromagnetic dog clutch;

[0016] Figure 6 Schematic diagram of the ring groove of an electromagnetic dog clutch;

[0017] Reference numerals: 10, engine input shaft; 11, left limit ring; 12, right limit ring; 13, ring groove; 14, ring block; 20, motor driving gear; 30, engine gear; 31, dog teeth; 32, gear bearing; 40, clutch engagement disc; 41, engagement ring disc; 411, engaging teeth; 42, return spring; 50, actuator assembly; 51, outer push ring; 52, magnet; 53, thrust bearing; 60, electromagnetic coil assembly; 61, coil housing; 62, coil core; 70, sensor induction plate; 80, position sensor. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0018] The present utility model will be further described in detail below in conjunction with the drawings and embodiments. The same components are denoted by the same reference numerals. It should be noted that the terms "front", "rear", "left", "right", "upper" and "lower" used in the following description refer to the directions in the drawings, and the terms "bottom surface" and "top surface", "inner" and "outer" refer to the directions towards or away from the geometric center of a specific component respectively.

[0019] As shown in Figure 1 and Figure 2As shown in the figure, an electromagnetic jaw clutch includes an engine input shaft 10, a motor drive gear 20, an engine gear 30, a clutch engagement disc 40, an actuator assembly 50, and an electromagnetic coil assembly 60. The motor drive gear 20 is fixedly arranged on the engine input shaft 10. The engine gear 30 is located on one side of the motor drive gear 20 and is rotatably connected to the engine input shaft 10. The clutch engagement disc 40 is located on the side of the engine gear 30 away from the motor drive gear 20 and is axially slidably connected to the engine input shaft 10. The clutch engagement disc 40 is used to engage with the motor drive gear 20. The actuator assembly 50 is sleeved on the clutch engagement disc 40 and is rotatably connected to the clutch engagement disc 40. One side of the actuator assembly 50 facing the engine gear 30 is used to abut against the clutch engagement disc 40. The electromagnetic coil assembly 60 is fixedly connected to the external housing and is used to drive the clutch engagement disc 40 to engage with the engine gear 30 through the actuator assembly 50. The electromagnetic jaw clutch of the present application is installed on the engine input shaft 10 to realize the functions of controlling the rigid connection and disconnection between the input shaft and the engine gear 30. The advantages of the present application include: 1. The electromagnetic clutch is lighter in weight and lower in cost compared with the traditional wet friction plate clutch. 2. The electromagnetic jaw clutch has the advantages of fast response, high efficiency, and large torque-bearing capacity when realizing power interruption. 3. The control strategy of the electromagnetic jaw clutch is simple and is easy to be realized in various harsh occasions such as automotive passenger vehicle transmissions.

[0020] The engine input shaft 10 and the motor drive gear 20 are of an integral structure.

[0021] As Figure 3 and Figure 4 As shown in the figure, the clutch engagement disc 40 includes an engagement ring disc 41 and a return spring 42. The engagement ring disc 41 is connected to the engine input shaft 10 through splines and is located on the right side of the engine gear 30. One side of the engagement ring disc 41 facing the engine gear 30 has engagement teeth 411. One side of the engine gear 30 facing the engagement ring disc 41 has jaw teeth 31. The engagement teeth 411 are used to engage with the jaw teeth 31. The return spring 42 is sleeved on the engine input shaft 10 and is located between the engagement ring disc 41 and the engine gear 30, and is used to abut against the engagement ring disc 41 to separate the engagement ring disc 41 from the engine gear 30. The engine gear 30 is rotatably connected to the engine input shaft 10 through a needle bearing and can rotate freely with each other to realize their respective power transmissions. The engagement ring disc 41 is connected to the engine input shaft 10 through spline clearance and can move freely on the shaft.

[0022] The actuating assembly 50 includes a push ring outer ring 51 and a magnet 52. The push ring outer ring 51 is sleeved on the coupling ring disc 41 and is rotatably connected to the coupling ring disc 41. One side of the push ring outer ring 51 facing the engine gear 30 is used to abut against the coupling ring disc 41. The magnet 52 is fixedly arranged on the push ring outer ring 51 and is aligned with the electromagnetic coil assembly 60, and is used to move towards the side close to the engine gear 30 under the control of the electromagnetic coil assembly 60.

[0023] The actuating assembly 50 further includes a thrust bearing 53. The thrust bearing 53 is sleeved on the coupling ring disc 41, and the thrust bearing 53 is located on the side of the push ring outer ring 51 facing the engine gear 30. The coil housing 61 is rotatably sleeved on the push ring outer ring 51, and the push ring outer ring 51 is rotatably sleeved on the coupling ring disc 41. The coil housing 61 and the push ring outer ring 51 can rotate independently of each other around the axial direction of the engine input shaft 10 without interfering with each other.

[0024] The electromagnetic coil assembly 60 includes a coil housing 61 and a coil core 62. The coil housing 61 is fixedly connected to the external housing. The coil housing 61 is arranged around the magnet 52. The coil core 62 is arranged inside the coil housing 61, and the coil core 62 is used to control the actuating assembly 50 to move towards the side close to the engine gear 30. The coil housing 61 and the external housing are fixedly connected and do not rotate. The coil housing 61 is arranged around the magnet 52 and is aligned with it. After the coil core 62 is energized, it can drive the entire actuating assembly 50 to move in the direction close to the engine gear 30 through the magnet 52.

[0025] When the vehicle releases the clutch engagement command, the coil core 62 generates an electromagnetic field after receiving the control current, controls the push ring outer ring 51 to move towards the coupling ring disc 41 through the magnet 52, and transmits an axial thrust to push the coupling ring disc 41 to move leftward. During the movement, the engaging teeth 411 on the coupling ring disc 41 are engaged with the spline teeth 31 on the engine gear 30, so as to transmit power to the engine gear 30. Finally, the power transmitted to the engine input shaft 10 by the engine is transmitted to the coupling ring disc 41 through the spline and then transmitted to the engine gear 30. When the vehicle releases the clutch disengagement command, the coil core 62 has no magnetic field, and the return spring 42 controls the coupling ring disc 41 to move away from the engine gear 30, so that the engine gear 30 and the coupling ring disc 41 are separated.

[0026] It also includes a sensor induction plate 70, which is fixedly arranged on the coupling ring plate 41 for the position sensor 80 to sense the position of the coupling ring plate 41. Specifically, the sensor induction plate 70 is fixedly connected to the coupling ring plate 41 by an interference connection. The sensor induction plate 70 can rotate and move with the coupling ring plate 41. The position sensor 80 sends an induction signal to sense the relative position of the sensor induction plate 70, so as to judge the engagement and disengagement of the clutch. When the vehicle releases the clutch engagement command and the coupling ring plate 41 is engaged with the engine gear 30, the position sensor 80 senses whether the relative position of the sensor induction plate 70 is in place to confirm whether the clutch is engaged, and then transmits the signal to the vehicle to realize the closed-loop of the clutch engagement action.

[0027] As Figure 5 and Figure 6 shown, the engine gear 30 is rotationally connected to the engine input shaft 10 through a gear bearing 32. The engine input shaft 10 is provided with a left limit ring 11 on the side of the gear bearing 32 close to the motor drive gear 20, and a right limit ring 12 on the side of the gear bearing 32 close to the clutch coupling plate 40. The left limit ring 11 and the right limit ring 12 are used to limit the left and right movement of the engine gear 30. The side of the left limit ring 11 away from the engine gear 30 fits against the motor drive gear 20, so it will not move.

[0028] The engine input shaft 10 is provided with a ring groove 13 at the right limit ring 12, and a ring block 14 is arranged in the ring groove 13. The ring block 14 is used to abut against the right limit ring 12. The ring block 14 is arranged in the ring groove 13 and will not move along the axial direction of the engine input shaft 10, so as to limit the left and right movement of the right limit ring 12.

[0029] Specifically, the gear bearing 32 is a needle bearing.

[0030] The advantages of this application include: 1. The electromagnetic clutch is lighter in weight and lower in cost than the traditional wet friction plate clutch. 2. The electromagnetic jaw clutch has the advantages of fast response, high efficiency and large torque-bearing capacity in realizing power interruption. 3. The control strategy of the electromagnetic jaw clutch is simple and easy to be realized in various demanding occasions such as automotive passenger car transmissions. 4. In the hybrid transmission, the power of the engine is directly driven. The control strategy of the electromagnetic jaw clutch is simple, the jaw teeth 31 have a simple structure, the function realization efficiency is high, and the cost is low. 5. With the precise induction of the position sensor 80, the on-off accuracy of the clutch is improved, the driver's idea is tracked in real time to provide power, the complete reliability of the engagement is guaranteed, and the driving pleasure is improved at the same time.

[0031] The above is only the preferred embodiment of the present utility model, and the protection scope of the present utility model is not limited to the above embodiments. All technical solutions falling within the concept of the present utility model belong to the protection scope of the present utility model. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present utility model, several improvements and refinements should also be regarded as within the protection scope of the present utility model.

Claims

1. An electromagnetic tooth clutch, characterized in that: It comprises an engine input shaft (10), a motor driving gear (20), an engine gear position gear (30), a clutch coupling plate (40), an actuator assembly (50) and an electromagnetic coil assembly (60); The motor driving gear (20) is fixedly arranged on the engine input shaft (10), and the engine gear position gear (30) is located on one side of the motor driving gear (20) and is rotationally connected to the engine input shaft (10); The clutch engaging disc (40) is located on a side of the engine gear (30) away from the motor driving gear (20) and is axially slidingly connected to the engine input shaft (10). The clutch engaging disc (40) is used to engage with the motor driving gear (20); The actuator (50) is sleeved on the clutch coupling disk (40) and is rotationally connected to the clutch coupling disk (40), and the side of the actuator (50) facing the engine gear (30) is used to abut against the clutch coupling disk (40); The electromagnetic coil assembly (60) is fixedly connected to the external housing and is used to drive the clutch coupling plate (40) to engage with the engine gear position gear (30) through the actuator assembly (50).

2. An electromagnetic dog clutch according to claim 1, characterized in that: The engine input shaft (10) and the motor driving gear (20) are an integrated structure.

3. The electromagnetic dog clutch according to claim 1, characterized in that: The clutch coupling disc (40) comprises a coupling ring disc (41) and a return spring (42); The coupling ring disk (41) and the engine input shaft (10) are connected by splines and are located on the right side of the engine gear (30); the coupling ring disk (41) has meshing teeth (411) on one side facing the engine gear (30); the engine gear (30) has tooth cogs (31) on one side facing the coupling ring disk (41); the meshing teeth (411) are used to mesh with the tooth cogs (31); The return spring (42) is sleeved on the engine input shaft (10) and is located between the coupling ring disk (41) and the engine gear position gear (30) and is used to abut against the coupling ring disk (41) so that the coupling ring disk (41) is separated from the engine gear position gear (30).

4. The electromagnetic dog clutch according to claim 3, characterized in that: The actuator assembly (50) comprises a push ring outer ring (51) and a magnet (52). The push ring outer ring (51) is sleeved on the coupling ring disk (41) and is rotatably connected to the coupling ring disk (41). The side of the push ring outer ring (51) facing the engine gear position gear (30) is used to abut against the coupling ring disk (41). The magnet (52) is fixedly arranged on the push ring outer ring (51) and aligned with the electromagnetic coil assembly (60) and is used to be controlled by the electromagnetic coil assembly (60) to move toward a side close to the engine gear position gear (30).

5. The electromagnetic dog clutch according to claim 4, characterized in that: The actuator assembly (50) further comprises a thrust bearing (53), wherein the thrust bearing (53) is sleeved on the coupling ring disk (41), and the thrust bearing (53) is located on the side of the thrust ring outer ring (51) facing the engine gear position gear (30).

6. The electromagnetic dog clutch according to claim 4, characterized in that: The electromagnetic coil assembly (60) comprises a coil shell (61) and a coil core (62); the coil shell (61) is fixedly connected to an external shell; the coil shell (61) is arranged around the magnet (52); the coil core (62) is arranged inside the coil shell (61); and the coil core (62) is used to control the actuator (50) to move toward a side close to the engine gear position gear (30).

7. An electromagnetic dog clutch according to any one of claims 3 to 6, characterized in that: It also includes a sensor sensing plate (70), which is fixedly arranged on the coupling ring disk (41) and is used for a position sensor (80) to sense the position of the coupling ring disk (41).

8. An electromagnetic dog clutch according to any one of claims 1 to 6, characterized in that: The engine gear (30) is rotatably connected to the engine input shaft (10) via a gear bearing (32); the engine input shaft (10) is provided with a left limiting ring (11) on the side of the gear bearing (32) close to the motor driving gear (20), and a right limiting ring (12) on the side of the gear bearing (32) close to the clutch engaging disc (40).

9. The electromagnetic dog clutch according to claim 8, characterized in that: The engine input shaft (10) is provided with an annular groove (13) at the right limiting ring (12), a ring block (14) is arranged in the annular groove (13), and the ring block (14) is used to abut against the right limiting ring (12).

10. The electromagnetic dog clutch according to claim 8, characterized in that: The gear bearing (32) is a needle roller bearing.

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