Electromagnetic synchronizer

Abstract

The utility model discloses an electromagnetic synchronizer which comprises an output shaft, a shift gear set, a shift meshing disc set and a meshing action component, the shift gear set comprises a first shift gear and a second shift gear, and the first shift gear and the second shift gear are both rotationally connected to the output shaft; the gear meshing disc set comprises a first gear meshing disc arranged corresponding to the first gear and a second gear meshing disc arranged corresponding to the second gear, and the first gear meshing disc and the second gear meshing disc are both installed on the output shaft, axially slide relative to the output shaft and are fixedly arranged in the circumferential direction. And the meshing action part is suitable for being controlled to act the first gear meshing disc to be meshed with or separated from the first gear and / or act the second gear meshing disc to be meshed with or separated from the second gear. High-low gear shifting and neutral gear functions can be realized.

Description

Technical Field

[0001] The utility model relates to an electromagnetic synchronizer and belongs to the technical field of vehicle control. Background Art

[0002] At present, the electric drive system of new energy vehicles mainly includes pure electric and hybrid modes. In particular, the electric drive system used in new energy passenger cars and light commercial vehicles is basically single-gear drive. The electric drive system of single-gear drive takes into account the power and economy requirements of the vehicle. Its power and economy are limited. In order to improve the power and economy, a high-power and high-speed drive motor is required, which increases the cost of the motor and motor controller. After searching, it was found that the Chinese patent with the announcement number CN101799070A discloses a shift device for a manual transmission. In this patent, the operator manipulates the shift lever to make the shift shaft move axially and rotate circumferentially relative to the gearbox. The shift body returns to the position of the balance point under the action of the reset mechanism; the shift fork on the shift body controls the meshing of the speed gear to achieve the shifting of the gear; when the shift body is in the positioning position of the non-balance point, the positioning mechanism generates a positioning resistance to keep the shift body stable; the operator releases the shift lever, the shift shaft returns to its original position under the action of the reset spring, and the shift body also returns to the position of the balance point to complete the shifting process. However, since the shift shaft of this patent needs to be acted upon by external force to move and rotate, it requires a lot of effort to operate the shift lever; the positioning resistance of the positioning mechanism is too large or the resetting force of the resetting mechanism is too small, which may cause the shift body to be unable to remain stable when positioned at a non-balanced point, affecting the accuracy of the shift. Utility Model Content

[0003] The technical problem to be solved by the utility model is to overcome the defects of the prior art and provide an electromagnetic synchronizer which can well realize the high-low gear shifting and neutral gear functions.

[0004] In order to solve the above technical problems, the technical solution of the utility model is: an electromagnetic synchronizer, comprising:

[0005] Output shaft;

[0006] a gear set, the gear set comprising a first gear and a second gear, the first gear and the second gear both being rotatably connected to the output shaft;

[0007] The gear engagement disc assembly comprises a first gear engagement disc corresponding to the first gear gear and a second gear engagement disc corresponding to the second gear gear, wherein the first gear engagement disc and the second gear engagement disc are both mounted on the output shaft and axially slide relative to the output shaft and are circumferentially fixed;

[0008] The meshing action component is suitable for being controlled to move the first gear engagement plate to engage with or disengage the first gear gear and / or to move the second gear engagement plate to engage with or disengage the second gear gear.

[0009] Furthermore, the first gear position gear is a high gear, and the second gear position gear is a low gear.

[0010] Furthermore, in order to achieve gear switching, the engagement action component includes an electromagnetic coil group, and the electromagnetic coil group includes a first electromagnetic coil corresponding to the first gear engagement disk and a second electromagnetic coil corresponding to the second gear engagement disk. The first electromagnetic coil is suitable for being controlled to be energized to attract the first gear engagement disk to move axially on the output shaft so that it is separated from the first gear gear, and the second electromagnetic coil is suitable for being controlled to be energized to attract the second gear engagement disk to move axially on the output shaft so that it is separated from the second gear gear.

[0011] Furthermore, the meshing action component further includes a first return spring disposed between the first gear engagement disk and the output shaft, wherein the first return spring is adapted to push the first gear engagement disk to move axially on the output shaft to mesh with the first gear gear after the first electromagnetic coil loses power;

[0012] A second return spring is arranged between the second gear engagement plate and the output shaft, and the second return spring is suitable for pushing the second gear engagement plate to move axially on the output shaft to engage with the second gear gear after the second electromagnetic coil loses power.

[0013] Further, in order to ensure a stable connection between the first gear engagement disc and the second gear engagement disc and the output shaft, the first gear engagement disc and the second gear engagement disc are respectively slidably mounted on the output shaft through splines.

[0014] Furthermore, in order to improve operational stability, reliability and efficiency, the electromagnetic synchronizer also includes a bearing group, the bearing group includes a first bearing and a second bearing, the first bearing is installed between the first gear gear and the output shaft, and the second bearing is installed between the second gear gear and the output shaft.

[0015] Furthermore, the electromagnetic synchronizer also includes a housing, and the first electromagnetic coil and the second electromagnetic coil are mounted on the housing.

[0016] The utility model also provides an operation method of an electromagnetic synchronizer, the method comprising the following steps:

[0017] The electromagnetic synchronizer has four working modes, including constant mesh mode, neutral mode, low gear mode and high gear mode;

[0018] When the electromagnetic synchronizer is in the constant meshing mode, the first electromagnetic coil and the second electromagnetic coil are both controlled to lose power, the first return spring pushes the first gear engagement plate to move axially on the output shaft to mesh with the first gear gear, and the second return spring pushes the second gear engagement plate to move axially on the output shaft to mesh with the second gear gear;

[0019] When the electromagnetic synchronizer is in the neutral mode, the first electromagnetic coil is controlled to be energized to attract the first gear engagement plate to move axially on the output shaft to separate it from the first gear gear, and the second electromagnetic coil is controlled to be energized to attract the second gear engagement plate to move axially on the output shaft to separate it from the second gear gear;

[0020] When the electromagnetic synchronizer is in the low gear mode, the first electromagnetic coil is controlled to be energized to attract the first gear engagement plate to move axially on the output shaft to separate it from the first gear gear, and the second electromagnetic coil is controlled to be de-energized, and the second return spring pushes the second gear engagement plate to move axially on the output shaft to engage with the second gear gear;

[0021] When the electromagnetic synchronizer is in high-speed mode, the second electromagnetic coil is controlled to be energized to attract the second gear engagement plate to move axially on the output shaft to separate it from the second gear gear, and the first electromagnetic coil is controlled to be de-energized, and the first return spring pushes the first gear engagement plate to move axially on the output shaft to engage it with the first gear gear.

[0022] After adopting the above technical solution, the utility model has the following beneficial effects:

[0023] In the utility model, the gear switching can be realized by controlling the power on and off of the electromagnetic coil, making the gear switching process faster.

[0024] When the electromagnetic synchronizer is in the normal meshing mode, that is, after the vehicle is turned off or started, the first electromagnetic coil and the second electromagnetic coil are in a power-off state, and the first electromagnetic coil and the second electromagnetic coil have no electromagnetic attraction. At this time, the first gear engagement plate and the second gear engagement plate are meshed with the first gear gear and the second gear gear respectively under the action of the first return spring and the second return spring;

[0025] When the electromagnetic synchronizer is in the neutral mode, the first electromagnetic coil and the second electromagnetic coil are energized, so that the first electromagnetic coil and the second electromagnetic coil generate electromagnetic attraction, so that the first gear engagement plate moves to the right, and the second gear engagement plate moves to the left, so that the first gear engagement plate and the first gear gear, and the second gear engagement plate and the second gear gear are out of meshing state, and return to the neutral position;

[0026] When the electromagnetic synchronizer is in low gear mode, the first electromagnetic coil is energized, so that the first electromagnetic coil generates electromagnetic attraction to move the first gear engagement plate to the right and disengage the first gear gear. At this time, the second electromagnetic coil is de-energized and does not generate electromagnetic attraction. The second gear engagement plate meshes with the second gear gear under the action of the second return spring, and the low gear power is transmitted to the output shaft through the second gear gear.

[0027] When the electromagnetic synchronizer is in high-speed mode, the second electromagnetic coil is energized, so that the second electromagnetic coil generates electromagnetic attraction to move the second gear engagement plate to the left and disengage the second gear gear. At this time, the first electromagnetic coil is de-energized and no electromagnetic attraction is generated. The first gear engagement plate engages with the first gear gear under the action of the first return spring, and the high-speed power is transmitted to the output shaft through the first gear gear. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 The utility model is a schematic diagram of the structure of an electromagnetic synchronizer. DETAILED DESCRIPTION

[0029] In order to make the content of the utility model more clearly understood, the utility model is further described in detail below based on specific embodiments and in conjunction with the accompanying drawings.

[0030] Embodiment 1

[0031] like Figure 1 As shown, this embodiment introduces an electromagnetic synchronizer, including:

[0032] Output shaft 1;

[0033] The gear set includes a first gear 21 and a second gear 22, and the first gear 21 and the second gear 22 are both rotatably connected to the output shaft 1;

[0034] The gear engagement disc assembly includes a first gear engagement disc 31 corresponding to the first gear gear 21 and a second gear engagement disc 32 corresponding to the second gear gear 22. The first gear engagement disc 31 and the second gear engagement disc 32 are both mounted on the output shaft 1 and axially slide relative to the output shaft 1 and are circumferentially fixed.

[0035] The meshing action component is suitable for being controlled to move the first gear engagement plate 31 to mesh with or separate from the first gear gear 21 and to move the second gear engagement plate 32 to mesh with or separate from the second gear gear 22 .

[0036] Specifically, Figure 1 As shown, the first gear position gear 21 is a high gear, and the second gear position gear 22 is a low gear.

[0037] Specifically, Figure 1 As shown, the engaging action component includes an electromagnetic coil group, which includes a first electromagnetic coil 41 corresponding to the first gear engaging disk 31 and a second electromagnetic coil 42 corresponding to the second gear engaging disk 32. The first electromagnetic coil 41 is suitable for being controlled to be energized to attract the first gear engaging disk 31 to move axially on the output shaft 1 to separate it from the first gear gear 21, and the second electromagnetic coil 42 is suitable for being controlled to be energized to attract the second gear engaging disk 32 to move axially on the output shaft 1 to separate it from the second gear gear 22.

[0038] Specifically, Figure 1 As shown, the meshing action component also includes a first return spring 51 disposed between the first gear engagement disc 31 and the output shaft 1, and the first return spring 51 is suitable for pushing the first gear engagement disc 31 to move axially on the output shaft 1 to mesh with the first gear gear 21 after the first electromagnetic coil 41 loses power;

[0039] The second return spring 52 is arranged between the second gear engagement plate 32 and the output shaft 1 , and is suitable for pushing the second gear engagement plate 32 to move axially on the output shaft 1 to engage with the second gear gear 22 after the second electromagnetic coil 42 loses power.

[0040] Specifically, the first gear engagement plate 31 and the second gear engagement plate 32 are respectively slidably mounted on the output shaft 1 through splines. In the present embodiment, a spline groove adapted to the spline is also provided on the output shaft 1. The first gear engagement plate 31 and the second gear engagement plate 32 can respectively slide axially on the output shaft 2 through the cooperation of the spline and the spline groove.

[0041] Specifically, Figure 1 As shown, the electromagnetic synchronizer also includes a bearing group, which includes a first bearing 61 and a second bearing 62 . The first bearing 61 is installed between the first gear 21 and the output shaft 1 , and the second bearing 62 is installed between the second gear 22 and the output shaft 1 .

[0042] In this embodiment, the first bearing 61 and the second bearing 62 are needle bearings, which can reduce the friction between the first gear 21 and the second gear 22 and the output shaft 1, thereby improving the transmission efficiency and extending the service life.

[0043] Specifically, Figure 1 As shown, the electromagnetic synchronizer further includes a housing 7 , and the first electromagnetic coil 41 and the second electromagnetic coil 42 are mounted on the housing 7 .

[0044] Embodiment 2

[0045] This embodiment introduces an operation method of an electromagnetic synchronizer according to Embodiment 1, and the method includes the following steps:

[0046] The electromagnetic synchronizer has four working modes, including constant mesh mode, neutral mode, low gear mode and high gear mode;

[0047] When the electromagnetic synchronizer is in the normal meshing mode, the first electromagnetic coil 41 and the second electromagnetic coil 42 are both controlled to lose power, the first return spring 51 pushes the first gear engagement plate 31 to move axially on the output shaft 1 to mesh with the first gear gear 21, and the second return spring 52 pushes the second gear engagement plate 32 to move axially on the output shaft 1 to mesh with the second gear gear 22;

[0048] When the electromagnetic synchronizer is in the neutral mode, the first electromagnetic coil 41 is controlled to be energized to attract the first gear engagement plate 31 to move axially on the output shaft 1 to separate it from the first gear gear 21, and the second electromagnetic coil 42 is controlled to be energized to attract the second gear engagement plate 32 to move axially on the output shaft 1 to separate it from the second gear gear 22;

[0049] When the electromagnetic synchronizer is in the low gear mode, the first electromagnetic coil 41 is controlled to be energized to attract the first gear engagement plate 31 to move axially on the output shaft 1 to separate it from the first gear gear 21, and the second electromagnetic coil 42 is controlled to be de-energized, and the second return spring 52 pushes the second gear engagement plate 32 to move axially on the output shaft 1 to engage with the second gear gear 22;

[0050] When the electromagnetic synchronizer is in high gear mode, the second electromagnetic coil 42 is controlled to be energized to attract the second gear engagement plate 32 to move axially on the output shaft 1 to separate it from the second gear gear 22, and the first electromagnetic coil 41 is controlled to be de-energized, and the first return spring 51 pushes the first gear engagement plate 31 to move axially on the output shaft 1 to engage with the first gear gear 21.

[0051] In this embodiment, the operation method of the electromagnetic synchronizer is as follows:

[0052] When the electromagnetic synchronizer is in the normal meshing mode, that is, after the vehicle is turned off or started, the first electromagnetic coil 41 and the second electromagnetic coil 42 are in a power-off state, and the first electromagnetic coil 41 and the second electromagnetic coil 42 have no electromagnetic attraction. At this time, the first gear engagement plate 31 and the second gear engagement plate 32 are meshed with the first gear gear 21 and the second gear gear 22 respectively under the action of the first return spring 51 and the second return spring 52;

[0053] When the electromagnetic synchronizer is in the neutral mode, the first electromagnetic coil 41 and the second electromagnetic coil 42 are energized, so that the first electromagnetic coil 41 and the second electromagnetic coil 42 generate electromagnetic attraction, so that the first gear engagement plate 31 moves rightward, and the second gear engagement plate 32 moves leftward, so that the first gear engagement plate 31 and the first gear gear 21, and the second gear engagement plate 32 and the second gear gear 22 are out of meshing state, and return to the neutral position;

[0054] When the electromagnetic synchronizer is in the low gear mode, the first electromagnetic coil 41 is energized, so that the first electromagnetic coil 41 generates electromagnetic attraction to move the first gear engagement plate 31 to the right and disengage the first gear gear 21. At this time, the second electromagnetic coil 42 is de-energized and does not generate electromagnetic attraction. The second gear engagement plate 32 is engaged with the second gear gear 22 under the action of the second return spring 52, and the low gear power is transmitted to the output shaft 1 through the second gear gear 22.

[0055] When the electromagnetic synchronizer is in high-speed mode, the second electromagnetic coil 42 is energized, so that the second electromagnetic coil 42 generates electromagnetic attraction to move the second-speed engagement plate 32 to the left and disengage the second-speed gear 22. At this time, the first electromagnetic coil 41 is de-energized and does not generate electromagnetic attraction. The first-speed engagement plate 31 is engaged with the first-speed gear 21 under the action of the first return spring 51, and the high-speed power is transmitted to the output shaft 1 through the first-speed gear 21.

[0056] The above specific embodiments further illustrate the technical problems, technical solutions and beneficial effects solved by the present invention. It should be understood that the above are only specific embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An electromagnetic synchronizer, characterized in that: include: Output shaft (1); A gear set, the gear set comprising a first gear (21) and a second gear (22), the first gear (21) and the second gear (22) both being rotatably connected to the output shaft (1); A gear engagement disc assembly, the gear engagement disc assembly comprising a first gear engagement disc (31) arranged corresponding to the first gear gear (21) and a second gear engagement disc (32) arranged corresponding to the second gear gear (22), the first gear engagement disc (31) and the second gear engagement disc (32) both being mounted on the output shaft (1) and axially sliding relative to the output shaft (1) and circumferentially fixed; The meshing action component is suitable for being controlled to move the first gear engagement plate (31) to engage or disengage with the first gear gear (21) and / or to move the second gear engagement plate (32) to engage or disengage with the second gear gear (22).

2. The electromagnetic synchronizer according to claim 1, characterized in that: The first gear position gear (21) is a high gear position, and the second gear position gear (22) is a low gear position.

3. The electromagnetic synchronizer according to claim 1, characterized in that: The first gear engagement disc (31) and the second gear engagement disc (32) are respectively slidably mounted on the output shaft (1) via splines.

4. The electromagnetic synchronizer according to claim 1, characterized in that: Also includes: A bearing group, the bearing group comprising a first bearing (61) and a second bearing (62), the first bearing (61) being installed between the first gear (21) and the output shaft (1), and the second bearing (62) being installed between the second gear (22) and the output shaft (1).

5. The electromagnetic synchronizer according to claim 1, characterized in that: Also includes: A housing (7), wherein the first electromagnetic coil (41) and the second electromagnetic coil (42) are mounted on the housing (7).

6. The electromagnetic synchronizer according to claim 1, characterized in that: The meshing action components include: An electromagnetic coil group, the electromagnetic coil group comprising a first electromagnetic coil (41) arranged corresponding to the first gear engagement disk (31) and a second electromagnetic coil (42) arranged corresponding to the second gear engagement disk (32), the first electromagnetic coil (41) being adapted to be controlled to be energized so as to attract the first gear engagement disk (31) to move axially on the output shaft (1) so as to separate it from the first gear gear (21), and the second electromagnetic coil (42) being adapted to be controlled to be energized so as to attract the second gear engagement disk (32) to move axially on the output shaft (1) so as to separate it from the second gear gear (22).

7. The electromagnetic synchronizer according to claim 1, characterized in that: The meshing action component also includes: a first return spring (51) disposed between the first gear engagement disk (31) and the output shaft (1), the first return spring (51) being adapted to push the first gear engagement disk (31) to move axially on the output shaft (1) to engage with the first gear gear (21) after the first electromagnetic coil (41) loses power; A second return spring (52) is arranged between the second gear engagement disk (32) and the output shaft (1), and the second return spring (52) is suitable for pushing the second gear engagement disk (32) to move axially on the output shaft (1) to engage with the second gear gear (22) after the second electromagnetic coil (42) loses power.

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