Modularized electromagnetic type half shaft disconnector assembly
By adding bushings and thrust bearings in the electromagnetic disconnector, the rotation wear problem of armature rings due to friction is solved, the service life of the transmission parts is extended, and the convenient assembly of modular design is achieved.
Patent Information
- Application Number
- CN202411375983.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-30
- Publication Date
- 2024-12-13
AI Technical Summary
In the prior art, the armature rotates with the active disc due to friction when pushing the active disc, resulting in wear and affecting the normal service life of the transmission components.
The bushing and thrust bearing are added in the electromagnetic disconnector. The bushing is located between the armature ring and the active tooth disc. When the solenoid coil is energized, the armature ring moves and pushes the bushing to drive the active tooth disc to engage to the driven tooth disc. The thrust bearing is connected Actively rotate the tooth disc to avoid the armature ring rotation, achieve axial sliding, and reduce wear.
It effectively increases the service life of transmission parts and simplifies assembly through modular design to avoid inconvenience of bulk parts.
Smart Images
Figure CN119122946A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of automobile transmission components, and in particular to a modular electromagnetic half-axle disconnect assembly. Background Art
[0002] As the penetration rate of new energy vehicles increases, various new energy vehicle manufacturers are seeking to optimize power efficiency to increase driving range and thus expand their market share.
[0003] The power of the automobile motor needs to be transmitted to the wheels through the transmission components. Since the vehicle needs to switch between two-wheel drive and four-wheel drive while moving, the switch between two-wheel drive and four-wheel drive is mainly achieved by the transmission components. In the prior art, the relevant transmission components mainly include an input shaft connected to the motor, an output shaft connected to the wheel, and an electromagnetic coil and an armature, wherein the input shaft is provided with an active sprocket that can move in the circumferential direction, and the output shaft is provided with a fixed driven sprocket. When the electromagnetic coil is energized, the active sprocket is pushed close to the driven sprocket by the armature, so that the active sprocket and the driven sprocket can be combined. However, in actual use, it is found that because the armature will rotate with the active sprocket due to friction when pushing the active sprocket, and the electromagnetic coil is fixed, the armature will rotate relative to the electromagnetic coil, resulting in wear problems and affecting the normal service life of the transmission components. Summary of the invention
[0004] The purpose of the present invention is to solve the problem in the prior art that the armature will rotate with the active toothed disc due to friction when pushing the active toothed disc, while the electromagnetic coil is fixed, so the armature will rotate relative to the electromagnetic coil, resulting in wear.
[0005] In order to solve the above problems, the present invention provides a modular electromagnetic half-axle disconnect assembly, comprising a housing and an input shaft and an output shaft coaxially connected to both sides of the housing, wherein an active toothed disc is provided at the end of the input shaft close to the output shaft, and the active toothed disc is fixed circumferentially relative to the input shaft and movable axially, and a driven toothed disc is provided at one end of the output shaft close to the input shaft, and the driven toothed disc is arranged correspondingly to the active toothed disc, and an electromagnetic disconnector is arranged in the housing, and the electromagnetic disconnector comprises:
[0006] An electromagnetic coil is fixed in the housing and arranged around the input shaft;
[0007] An armature ring is movably disposed on the inner side of the electromagnetic coil and sleeved on the input shaft;
[0008] A bushing, which is movably mounted on the input shaft and located between the armature ring and the active toothed disc, wherein one side of the bushing abuts against the armature ring and the other side is provided with a thrust bearing abutting against the active toothed disc;
[0009] The armature ring is used to move toward the driven toothed disc under the action of the magnetic field of the electromagnetic coil, so that the bushing is driven by the armature ring to push the active toothed disc to engage with the driven toothed disc.
[0010] Compared with the prior art, the above scheme optimizes the structure of the electromagnetic disconnector, adds a bushing between the armature ring and the active chainring, and the bushing is provided with a thrust bearing abutting against the active chainring. When the electromagnetic coil is energized to move the armature ring toward the driven chainring, the bushing is driven by the armature ring to push the active chainring to engage with the driven chainring. At this time, due to the presence of the thrust bearing between the bushing and the active chainring, the rotation of the active chainring will be undertaken by the thrust bearing, that is, the bushing will not rotate with the active chainring, and the armature ring will not rotate either. Therefore, the armature ring only has axial sliding relative to the electromagnetic coil, and there will be no wear caused by the rotation of the armature relative to the electromagnetic coil in the prior art, thereby effectively increasing the normal service life of the transmission components. In addition, the above scheme integrates the input shaft, output shaft and electromagnetic disconnector into the housing, realizing a modular design, which is more convenient to assemble than the structure of bulk design of each part in the prior art.
[0011] In an improved solution, a return spring is provided at the end of the input shaft close to the output shaft, and the return spring acts on the driving chainwheel and applies a thrust to the driving chainwheel away from the driven chainwheel, so that when the electromagnetic coil loses power, the return spring can push the driving chainwheel and the driven chainwheel to separate.
[0012] In an improved solution, the active chainring includes a chainring body facing the side of the driven chainring and an annular boss facing away from the side of the driven chainring, the inner ring side of the annular boss is provided with a keyway, and the input shaft is provided with a spline corresponding to the keyway, and the spline cooperates with the keyway to achieve that the active chainring is circumferentially fixed relative to the input shaft and axially movable, thereby ensuring that the cooperation between the input shaft and the active chainring is more stable.
[0013] In an improved solution, the bushing is arranged around the outer side of the annular boss, and the thrust bearing of the bushing abuts against the crankset body, thereby making the structure compact and reliable.
[0014] In an improved solution, a coaxial positioning hole is provided at one end of the output shaft near the input shaft, and a coaxial positioning cam is provided at one end of the input shaft near the output shaft. The positioning cam extends into the positioning hole, and a rolling bearing is provided between the positioning cam and the positioning hole to achieve rotational fit, thereby ensuring that the input shaft and the output shaft can maintain good coaxiality and the transmission is smoother.
[0015] In an improved solution, a position sensor is further included, and the position sensor is used to detect the position of the bushing or the active chainring, so as to facilitate real-time monitoring of whether the active chainring is in a coupled state relative to the driven chainring.
[0016] In an improved solution, a controller is further included, wherein the controller is used to adjust the power-on state of the electromagnetic coil according to the signal feedback of the position sensor to achieve better control.
[0017] In an improved solution, the inner cavity of the shell is closed, and the outer walls on both sides of the shell are respectively provided with assembly holes for the input shaft and the output shaft to be plugged in. Sealing oil covers are provided between the input shaft and the corresponding assembly holes, and between the output shaft and the corresponding assembly holes, so that the interior of the shell has good sealing performance to prevent external impurities from entering, and the shell can be filled with lubricating oil to make the transmission smoother.
[0018] In an improved solution, an oil filling hole is provided at the upper portion of the shell, and an oil filling screw plug is detachably connected to the oil filling hole; an oil drain hole is provided at the lower portion of the shell, and an oil drain screw plug is detachably connected to the oil drain hole, so that oil can be filled or drained through the oil filling hole as needed.
[0019] In an improved solution, the oil filling plug and / or the oil drain plug are made of magnetic material, so that the oil filling plug and / or the oil drain plug can absorb ferromagnetic impurities. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] Figure 1 It is an overall schematic diagram of a modular electromagnetic half-axle disconnect assembly;
[0021] Figure 2 A schematic top view of a modular electromagnetic half-axle disconnect assembly;
[0022] Figure 3 For along Figure 2 Schematic cross-sectional view of the AA section line;
[0023] Figure 4 for Figure 3 A partial enlarged schematic diagram of area B in the middle.
[0024] Description of reference numerals:
[0025] 1. Housing; 11. Assembly hole; 111. Sealing oil cap; 12. Oil filling hole; 121. Oil filling plug; 13. Oil drain hole; 131. Oil drain plug; 2. Input shaft; 21. Positioning cam; 22. Annular groove; 3. Output shaft; 31. Positioning socket; 32. Rolling bearing; 4. Active toothed disc; 41. Toothed disc body; 42. Annular boss; 5. Driven toothed disc; 6. Electromagnetic coil; 7. Armature ring; 8. Bushing; 81. Thrust bearing; 9. Return spring; 91. Washer; 10. Position sensor. DETAILED DESCRIPTION
[0026] It should be understood by those skilled in the art that the following embodiments are only used to explain the technical principles of the embodiments of the present application and are not intended to limit the protection scope of the embodiments of the present application. Those skilled in the art may adjust them as needed to adapt to specific application scenarios.
[0027] In the description of the following embodiments, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of this application can be understood according to specific circumstances.
[0028] In the embodiments of the present application, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "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" or "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.
[0029] The present application is further described in detail below with reference to the accompanying drawings and specific embodiments.
[0030] See also Figure 1-Figure 4 The embodiment of the present invention provides a modular electromagnetic half-shaft disconnect assembly, comprising a housing 1 and an input shaft 2 and an output shaft 3 coaxially and rotatably connected to both sides of the housing 1, an active toothed disc 4 is provided at the end of the input shaft 2 close to the output shaft 3, the active toothed disc 4 is circumferentially fixed relative to the input shaft 2 and axially movable, an end of the output shaft 3 close to the input shaft 2 is provided with a driven toothed disc 5, the driven toothed disc 5 is arranged corresponding to the active toothed disc 4, an electromagnetic disconnect is provided in the housing 1, and the electromagnetic disconnect comprises:
[0031] The electromagnetic coil 6 is fixed in the housing 1 and arranged around the input shaft 2;
[0032] The armature ring 7 is movably arranged on the inner side of the electromagnetic coil 6 and sleeved on the input shaft 2;
[0033] A bushing 8 is movably sleeved on the input shaft 2 and located between the armature ring 7 and the active toothed disc 4. One side of the bushing 8 abuts against the armature ring 7 and the other side is provided with a thrust bearing 81 abutting against the active toothed disc 4.
[0034] The armature ring 7 is used to move toward the driven toothed disc 5 under the action of the magnetic field of the electromagnetic coil 6 , so that the bushing 8 is driven by the armature ring 7 to push the active toothed disc 4 to engage with the driven toothed disc 5 .
[0035] The above scheme optimizes the structure of the electromagnetic disconnector, adds a bushing 8 between the armature ring 7 and the active chain disc 4, and the bushing 8 is provided with a thrust bearing 81 abutting against the active chain disc 4. When the electromagnetic coil 6 is energized to make the armature ring 7 move toward the driven chain disc 5, the bushing 8 is driven by the armature ring 7 to push the active chain disc 4 to engage with the driven chain disc 5. At this time, due to the presence of the thrust bearing 81 between the bushing 8 and the active chain disc 4, the rotation of the active chain disc 4 will be undertaken by the thrust bearing 81, that is, the bushing 8 will not rotate with the active chain disc 4, and the armature ring 7 will not rotate either. Therefore, the armature ring 7 only has axial sliding relative to the electromagnetic coil 6, and there will be no wear caused by the rotation of the armature relative to the electromagnetic coil 6 in the prior art, thereby effectively increasing the normal service life of the transmission components. In addition, the above scheme integrates the input shaft 2, the output shaft 3 and the electromagnetic disconnector into the housing, realizing a modular design, which is more convenient to assemble than the structure of bulk design of each part in the prior art.
[0036] In this embodiment, a return spring 9 is provided at the end of the input shaft 2 near the output shaft 3. The return spring 9 acts on the active toothed disc 4 and applies a thrust in the direction away from the driven toothed disc 5 to the active toothed disc 4, so that when the electromagnetic coil 6 loses power, the return spring 9 can push the active toothed disc 4 to separate from the driven toothed disc 5, thereby realizing the reset of the active toothed disc 4. More specifically, an annular groove 22 is provided at the end of the input shaft 2 near the output shaft 3, and the return spring 9 is located in the annular groove 22. One end of the return spring 9 near the driven toothed disc 5 abuts against the groove wall of the annular groove 22, and one end of the return spring 9 near the active toothed disc 4 abuts against the active toothed disc 4 through a washer 91, thereby ensuring that the return spring 9 can apply a thrust in the direction away from the driven toothed disc 5 to the active toothed disc 4. It should be understood that the return spring 9 is only one of the structures used to realize the reset movement of the active toothed disc 4, and other structures in the prior art can also be used to realize the reset movement of the active toothed disc 4, and this design does not limit this.
[0037] As an improvement to the present embodiment, the active chainring 4 includes a chainring body 41 facing the side of the driven chainring 5 and an annular boss 42 facing away from the side of the driven chainring 5, a keyway is provided on the inner ring side of the annular boss 42, and a spline corresponding to the keyway is provided on the input shaft 2, and the spline cooperates with the keyway to realize that the active chainring 4 is circumferentially fixed relative to the input shaft 2 and axially movable, ensuring that the fit between the input shaft 2 and the active chainring 4 is more stable. Of course, the keyway can also be provided on the input shaft 2, and the spline can be provided on the inner ring of the annular boss 42; or the keyway can be provided on the inner ring side of the annular boss 42, and a shaft member corresponding to the keyway can be provided on the input shaft 2; or the inner ring hole of the annular boss 42 is designed to be directional or other non-circular shapes, and a shaft segment matching the shape of the inner ring hole of the annular boss 42 is provided on the input shaft 2. As long as the fit mode that the active chainring 4 is circumferentially fixed relative to the input shaft 2 and axially movable can be realized, it belongs to an equivalent replacement of the present design concept.
[0038] The armature ring 7 is movably arranged on the inner side of the electromagnetic coil 6, which means that the outer side of the armature ring 7 is in sliding contact with the inner circumferential wall of the electromagnetic coil, so that when the electromagnetic coil 6 is energized, the armature ring 7 can produce axial movement; the inner side of the armature ring 7 is preferably not in contact with the input shaft 2, so as to avoid wear of the armature ring 7 when the input shaft 2 rotates. This structure belongs to the prior art and will not be repeated here.
[0039] The bushing 8 is assembled between the armature ring 7 and the active chainring 4. The inner side of the bushing 8 is preferably not in contact with the input shaft 2, thereby avoiding wear of the bushing 8 when the input shaft 2 rotates; further, the bushing 8 is arranged around the outer side of the annular boss 42, and the thrust bearing 81 abuts against the chainring body 41, thereby making the structure compact and reliable.
[0040] In this embodiment, a coaxial positioning hole 31 is provided at one end of the output shaft 3 close to the input shaft 2, and a coaxial positioning cam 21 is provided at one end of the input shaft 2 close to the output shaft 3. The positioning cam 21 extends into the positioning hole 31, and a rolling bearing 32 is provided between the positioning cam 21 and the positioning hole 31 to achieve rotational fit, thereby ensuring that the input shaft 2 and the output shaft 3 can maintain good coaxiality and the transmission is smoother.
[0041] In an improved solution, a position sensor 10 is further included. The position sensor 10 is used to detect the position of the bushing 8 or the active chainring 4, so as to facilitate real-time monitoring of whether the active chainring 4 is in a coupled state relative to the driven chainring 5.
[0042] In an improved solution, a controller (not shown in the figure) is further included, and the controller is used to adjust the power-on state of the electromagnetic coil 6 according to the signal feedback of the position sensor 10 to achieve better control.
[0043] In this embodiment, the left outer wall of the housing 1 is provided with an assembly hole 11 for the input shaft 2 to be inserted, and the right outer wall of the housing 1 is provided with an assembly hole 11 for the output shaft 3 to be inserted. In order to improve the sealing performance inside the housing 1, a sealing oil cover 111 is provided between the input shaft 2 and the corresponding assembly hole 11, and between the output shaft 3 and the corresponding assembly hole 11, so that the inside of the housing 1 has good sealing performance to prevent foreign matter from entering, and the housing 1 can be filled with lubricating oil to make the transmission smoother.
[0044] As an improvement to the shell 1, an oil filling hole 12 is provided at the upper portion of the shell 1, and the oil filling hole 12 is detachably connected to an oil filling screw plug 121; an oil drain hole 13 is provided at the lower portion of the shell 1, and the oil drain hole 13 is detachably connected to an oil drain screw plug 131, so that the oil filling screw plug 121 and the oil drain screw plug 131 can be disassembled and assembled as needed, and then oil is filled through the oil filling hole 12 or drained through the oil drain hole 13.
[0045] Furthermore, the oil filling plug 121 and / or the oil drain plug 131 are made of magnetic material, so that the oil filling plug 121 and / or the oil drain plug 131 can absorb ferromagnetic impurities.
[0046] It should be noted that, in the description of the present application, the terms "inside", "outside", etc. indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings. This is merely 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. All directional indications (such as up, down, left, right, front, back, inside, and outside) are only used to explain the relative positional relationship, movement, etc. between the components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.
[0047] 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" etc. 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 may be combined in a suitable manner in any one or more embodiments or examples. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.
[0048] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed in the present application should be included in the protection scope of the present application. Therefore, the protection scope of the present application shall be based on the protection scope of the claims.
Claims
1. A modular electromagnetic half-axle disconnect assembly, characterized in that: The invention comprises a housing (1) and an input shaft (2) and an output shaft (3) which are coaxially connected to the housing (1) on both sides. The input shaft (2) is provided with a driving toothed disc (4) at the end thereof close to the output shaft (3). The driving toothed disc (4) is fixed in the circumferential direction relative to the input shaft (2) and is movable in the axial direction. The output shaft (3) is provided with a driven toothed disc (5) at one end thereof close to the input shaft (2). The driven toothed disc (5) is arranged corresponding to the driving toothed disc (4). An electromagnetic disconnector is provided in the housing (1). The electromagnetic disconnector comprises: An electromagnetic coil (6) is fixed in the housing (1) and arranged around the input shaft (2); An armature ring (7) is movably arranged on the inner side of the electromagnetic coil (6) and sleeved on the input shaft (2); A bushing (8) is movably sleeved on the input shaft (2) and located between the armature ring (7) and the active toothed disc (4); one side of the bushing (8) abuts against the armature ring (7) and the other side is provided with a thrust bearing (81) abutting against the active toothed disc (4); The armature ring (7) is used to move towards the driven toothed disc (5) under the action of the magnetic field of the electromagnetic coil (6), so that the bushing (8) is driven by the armature ring (7) to push the active toothed disc (4) to engage with the driven toothed disc (5).
2. The modular electromagnetic half-axle disconnect assembly according to claim 1, characterized in that: A return spring (9) is provided at the end of the input shaft (2) close to the output shaft (3), and the return spring (9) acts on the active toothed disc (4) and applies a thrust to the active toothed disc (4) in a direction away from the driven toothed disc (5).
3. The modular electromagnetic half-axle disconnect assembly according to claim 1 or 2, characterized in that: The active toothed disc (4) comprises a toothed disc body (41) facing the side of the driven toothed disc (5) and an annular boss (42) facing away from the side of the driven toothed disc (5); a keyway is provided on the inner ring side of the annular boss (42); the input shaft (2) is provided with a spline corresponding to the keyway; the spline cooperates with the keyway to achieve circumferential fixation of the active toothed disc (4) relative to the input shaft (2) and axial movement thereof.
4. The modular electromagnetic half-axle disconnect assembly according to claim 3, characterized in that: The bushing (8) is disposed around the outer side of the annular boss (42), and the thrust bearing (81) of the bushing (8) abuts against the crankset body (41).
5. The modular electromagnetic half-axle disconnect assembly according to claim 1 or 2, characterized in that: A coaxial positioning socket (31) is provided at one end of the output shaft (3) close to the input shaft (2), and a coaxial positioning convex shaft (21) is provided at one end of the input shaft (2) close to the output shaft (3). The positioning convex shaft (21) extends into the positioning socket (31), and a rolling bearing (32) is provided between the positioning convex shaft (21) and the positioning socket (31) to achieve rotational fit.
6. The modular electromagnetic half-axle disconnect assembly according to claim 1 or 2, characterized in that: It also comprises a position sensor (10), wherein the position sensor (10) is used to detect the position of the bushing (8) or the active chainring (4).
7. The modular electromagnetic half-axle disconnect assembly according to claim 6, characterized in that: It also includes a controller, which is used to adjust the energization state of the electromagnetic coil (6) according to the signal feedback of the position sensor (10).
8. The modular electromagnetic half-axle disconnect assembly according to claim 1, characterized in that: The inner cavity of the housing (1) is closed, and the outer walls on both sides of the housing (1) are respectively provided with assembly holes (11) for inserting the input shaft (2) and the output shaft (3), and sealing oil covers (111) are provided between the input shaft (2) and the corresponding assembly holes (11), and between the output shaft (3) and the corresponding assembly holes (11).
9. The modular electromagnetic half-axle disconnect assembly according to claim 8, characterized in that: An oil filling hole (12) is provided at the upper portion of the housing (1), and an oil filling screw plug (121) is detachably connected to the oil filling hole (12); an oil drain hole (13) is provided at the lower portion of the housing (1), and an oil drain screw plug (131) is detachably connected to the oil drain hole (13).
10. The modular electromagnetic half-axle disconnect assembly according to claim 9, characterized in that: The oil filling screw plug (121) and / or the oil drain screw plug (131) are made of magnetic material.