Starter output transmission device
By using ball spline connection assembly and clutch assembly in DC starter, the control mechanism is used to drive the ball spline master movement, and the stable meshing and separation between the gear and the engine flywheel is achieved, which solves the problem of failure of the solenoid core and return spring, and improves the The stability and service life of the starter reduce maintenance needs.
Patent Information
- Application Number
- CN202411257531.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-09
- Publication Date
- 2024-12-17
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
During the starting process of existing DC starters, frequent start of the solenoid core and return spring are prone to failure, resulting in inconvenient maintenance, and prone to instability in engine starting due to failure, increasing wear and decreasing service life.
The ball spline connection assembly and the clutch assembly are adopted to drive the ball spline master to move along the spline axis through the control mechanism, so that the first clutch and the second clutch are interlocked and separated, and the meshing state between the gear and the engine flywheel is controlled to improve the starting stability. Reduce wear and extend service life.
Through the precise movement and occlusion block design of ball spline master, the stability and service life of the transmission mechanism are improved, maintenance needs are reduced, vibration and wear are reduced, and the reliability of the starter is enhanced.
Smart Images
Figure CN119145988A_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the field of starters, and in particular to an output transmission device of a starter. Background Art
[0002] Before the engine can run with its own power, it must be started with the help of external force, and the starter plays this role. Starters are divided into DC starters, gasoline starters, compressed air starters, etc. according to their working principles. Most internal combustion engines use DC starters, which are characterized by compact structure, simple operation and easy maintenance.
[0003] At present, most of the existing DC starters are composed of a DC series motor, an operating mechanism and a transmission mechanism. The operating mechanism is an electromagnetic operating mechanism, which is connected to the transmission mechanism.
[0004] The transmission mechanism usually includes a gear shaft, an overrunning clutch that cooperates with the gear shaft through a spline, two fork plates mounted on the gear shaft, a fork that interacts with the fork plates, and a driving gear mounted on the gear shaft. The gear shaft is usually connected to a reduction mechanism mounted on the rotating shaft of the motor by means of an overrunning clutch at one end, and the driving gear is mounted on the other end of the gear shaft. The fork is pivotally mounted on the fork support through a pivot in the middle thereof, and one end of it is inserted between the two fork plates through a tab extending from the fork body, and the other end of it is interconnected with the movable electromagnetic core of the electromagnetic switch through a pull rod passing through a return spring.
[0005] When the engine is to be started, the coil of the electromagnetic switch is energized to generate an electromagnetic force to attract the movable electromagnetic core. The movement of the movable electromagnetic core causes the shift fork to rotate around the pivot, so that the tab of the shift fork pushes the shift fork plate to push the gear shaft from the overrunning clutch toward the gear of the engine, thereby causing the drive gear on the gear shaft to mesh with the gear of the engine. While the drive gear is meshing with the gear of the engine, the movable electromagnetic core also moves to a position to connect the circuit of the motor, resulting in the motor rotating and thus driving the engine to rotate. After the engine is started, the coil of the electromagnetic switch is de-energized and the electromagnetic force disappears. Under the action of the return spring, the tab of the shift fork pushes the shift fork plate in the opposite direction to push the gear shaft from the gear of the engine toward the overrunning clutch, thereby causing the drive gear on the gear shaft to disengage from the gear of the engine.
[0006] With regard to the above-mentioned related technologies, the inventor believes that during the engine starting process, the electromagnetic core is used to drive the shift fork to work, thereby driving the transmission mechanism to work. During resetting, the reset spring is used to drive the shift fork to reset, thereby driving the transmission mechanism to reset. The electromagnetic core and the reset spring are prone to failure due to frequent starting. During maintenance, the electromagnetic core and the springs at the lower and upper ends of the shift fork need to be replaced, which is inconvenient to maintain. Summary of the invention
[0007] In order to alleviate the problem that the starter is prone to maintenance due to failure of the electromagnetic core and the return spring, the present application provides a starter output transmission device.
[0008] The present application provides a starter output transmission device, which adopts the following technical solution: A starter output transmission device includes a transmission mechanism and a control mechanism, wherein the transmission mechanism includes a gear, a ball spline connection assembly and a clutch assembly, wherein the ball spline connection assembly includes a spline shaft and a ball spline nut, wherein the spline shaft is transmission-connected to an electric motor, the ball spline nut is connected to the spline shaft, the gear is rotationally connected to the spline shaft, the gear is meshed with a flywheel of an engine, the clutch assembly includes a first clutch member and a second clutch member that can engage and disengage with each other, wherein the first clutch member is fixedly connected to a side of the ball spline nut close to the gear, and the second clutch member is fixedly connected to a side of the gear close to the ball spline nut, wherein the control mechanism is connected to the ball spline nut, and is used to drive the ball spline nut to move axially along the ball spline, and the control mechanism is electrically connected to the starter.
[0009] By adopting the above technical solution, when the starter is used to start the engine, the motor drives the spline shaft to rotate. After the motor is started, a signal is transmitted to the control mechanism. The control mechanism drives the ball spline nut to move in the direction close to the gear, so that the first clutch member and the second clutch member are engaged. The gear is connected to the ball spline nut through the engagement of the first clutch member and the second clutch member. The ball spline nut rotates under the drive of the spline shaft. The ball spline nut transmits the torque of the motor to the gear, so that the gear drives the flywheel of the engine to rotate, and the flywheel further drives the crankshaft to rotate, thereby starting the engine. After the engine is started, the control mechanism drives The movable ball spline nut moves in the direction away from the gear, so that the first clutch is separated from the second clutch. After the first clutch is separated from the second clutch, the control mechanism transmits a signal to the motor to stop the motor, thereby reducing the possibility of the engine dragging the motor back. During the starting process of the engine, the gear and the flywheel of the engine remain in a meshing state, and the on and off of the transmission path are controlled by the engagement and separation of the first clutch and the second clutch, thereby improving the stability of engine starting, reducing the wear on the gears, and increasing the service life of the starter, alleviating the problem that the starter is easy to maintain due to the failure of the electromagnetic core and the return spring.
[0010] Optionally, the first connecting member and the second connecting member are both inserted into the spline shaft, and the first clutch member and the second clutch member both include a connecting portion and an engaging portion, the connecting portion is a cylindrical structure, the engaging portion is connected to one axial end of the connecting portion, the engaging portion includes a plurality of engaging blocks, and the plurality of engaging blocks are arranged along the circumference of the spline shaft, the engaging blocks include an engaging surface perpendicular to the axial end surface of the connecting portion and a guide surface inclined toward the connecting portion, the guide surface of the engaging block is connected to the engaging surface of an adjacent engaging block close to its guide surface, the connecting portion of the first connecting member is fixedly connected to the ball spline nut, and the connecting portion of the second clutch member is fixedly connected to the gear.
[0011] By adopting the above technical solution, after the starter works, the control mechanism drives the ball spline nut to move a set distance along the axial direction of the spline shaft toward the direction close to the gear, so that the bite portion of the first clutch member and the bite portion of the second clutch member are meshed with each other. At this time, the torque of the motor is transmitted to the second clutch member through the ball spline nut and the first clutch member, thereby driving the gear to rotate, and the flywheel of the engine rotates under the drive of the gear to start the engine; when the engine starts, the control mechanism drives the ball spline nut to move in the opposite direction, so that the bite portion between the first clutch member and the second clutch member is disengaged. At this time, the transmission path between the motor and the gear is cut off to prevent the engine flywheel from dragging the motor back; by setting the bite block to include a bite surface perpendicular to the axial end face of the connecting part and a guide surface inclined toward the connecting part, the guide surface of the bite block is connected to the bite surface of the adjacent bite block close to the side of its guide surface, so that the bite of the first clutch member and the second clutch member is smoother, the wear of the clutch assembly is reduced, and the vibration during the engine starting process is reduced, thereby increasing the service life of the starter.
[0012] Optionally, the engaging portion and the connecting portion are integrally formed.
[0013] By adopting the above technical solution, the engaging portion and the connecting portion are integrally formed, thereby improving the structural strength of the first clutch member and the second clutch member, and further improving the working stability of the transmission mechanism.
[0014] Optionally, the control mechanism includes an electric push cylinder, a connecting rod and a first bearing, the cylinder body of the electric push cylinder is fixedly connected to the housing of the starter, the piston rod of the electric push cylinder is retracted and extended along the axial direction of the spline shaft, the first bearing is sleeved on the outside of the ball spline nut, the ball spline nut is fixedly connected to the inner ring of the first bearing, one end of the connecting rod is fixedly connected to the piston rod of the electric push cylinder, the other end of the connecting rod is fixedly connected to the outer ring of the first bearing, and the electric push cylinder is electrically connected to the motor.
[0015] By adopting the above technical solution, after the motor starts working, it transmits a signal to the electric push cylinder, and the electric push cylinder drives the ball spline nut to move in the direction close to the gear. The movement of the ball spline nut is controlled by the electric push cylinder, and the control of the movement distance of the ball spline nut is more precise, thereby reducing the possibility of unstable connection between the first clutch component and the second clutch component due to the movement error of the ball spline nut.
[0016] Optionally, a distance detection sensor is provided on the motor, and the distance detection sensor is used to detect the distance between the motor and the connecting rod, and the distance detection sensor is electrically connected to the electric push cylinder.
[0017] By adopting the above technical solution, a distance detection sensor is used to detect the distance between the motor and the connecting rod. The distance between the motor and the gear is fixed. By detecting the distance between the connecting rod and the motor, the distance that the electric push cylinder needs to drive the first clutch to move is checked. The electric push rod adjusts the extension and retraction length of the piston rod according to the signal transmitted by the distance detection sensor, thereby reducing the possibility of unstable connection between the first clutch and the second clutch due to the accumulation of errors caused by the electric push cylinder driving the first clutch to reciprocate multiple times.
[0018] Optionally, a rotation speed detection sensor is provided on the spline shaft, and the rotation speed detection sensor is used to detect the rotation speed of the spline shaft, and the rotation speed detection sensor is electrically connected to the electric push cylinder.
[0019] By adopting the above technical solution, the speed of the spline shaft is detected by a speed detection sensor. When the value detected by the speed detection sensor reaches the set value, the speed detection sensor transmits a signal to the electric push cylinder, and the electric push cylinder drives the first clutch component to separate from the second clutch component, thereby reducing the possibility of damage to the motor due to the engine flywheel dragging the motor back.
[0020] Optionally, the gear is rotatably connected to the spline shaft via a second bearing, a sleeve is provided on a side of the gear away from the second clutch member, the sleeve is coaxially fixedly connected to the gear, and a fan blade is fixedly connected inside the sleeve.
[0021] By adopting the above technical solution, a sleeve is coaxially fixedly connected on the side of the gear away from the second clutch member, and a fan blade is fixedly connected inside the sleeve. After the engine is started, the gear will continue to rotate driven by the engine flywheel, and the second bearing connecting the spline shaft and the gear will generate heat after working for a long time. The sleeve is driven to rotate by the gear, and the rotation of the sleeve drives the fan blade to rotate. The rotation of the fan blade dissipates heat from the second bearing, thereby increasing the service life of the second bearing.
[0022] Optionally, one end of the spline shaft away from the electric motor is rotatably connected to a housing of the starter.
[0023] By adopting the above technical solution, the end of the spline shaft away from the motor is rotatably connected to the housing of the starter, thereby reducing the possibility of shaking of the spline shaft during rotation, thereby improving the stability of the engagement between the gear and the flywheel of the engine.
[0024] In summary, the present application includes at least one of the following beneficial technical effects: When the starter is used to start the engine, the motor drives the spline shaft to rotate. After the motor starts, it transmits a signal to the control mechanism. The control mechanism drives the ball spline nut to move in the direction close to the gear, so that the first clutch member and the second clutch member engage with each other. The gear is connected to the ball spline nut through the engagement of the first clutch member and the second clutch member. The ball spline nut rotates under the drive of the spline shaft. The ball spline nut transmits the torque of the motor to the gear, so that the gear drives the flywheel of the engine to rotate, and the flywheel further drives the crankshaft to rotate, thereby starting the engine. After the engine is started, the control mechanism drives the ball spline nut to rotate. The clutch moves away from the gear to separate the first clutch from the second clutch. After the first clutch is separated from the second clutch, the control mechanism transmits a signal to the motor to stop the motor, thereby reducing the possibility of the engine dragging the motor. During the starting process of the engine, the gear and the flywheel of the engine remain in meshing state, and the on and off of the transmission path are controlled by the engagement and separation of the first clutch and the second clutch, thereby improving the stability of the engine starting, reducing the wear of the gear, and increasing the service life of the starter, and alleviating the problem that the starter is easy to be maintained due to the failure of the electromagnetic core and the return spring. By using the electric push cylinder to control the movement of the ball spline nut, the movement distance of the ball spline nut can be controlled more accurately, thereby reducing the possibility of unstable connection between the first clutch member and the second clutch member due to the movement error of the ball spline nut; By coaxially fixing a connecting sleeve on the side of the gear away from the second clutch member, and fixing a connecting fan blade inside the sleeve, after the engine is started, the gear will continue to rotate driven by the engine flywheel, and the second bearing connecting the spline shaft and the gear will generate heat after long-term work. The sleeve is driven to rotate by the gear, and the rotation of the sleeve drives the fan blade to rotate. The rotation of the fan blade dissipates heat from the second bearing, thereby increasing the service life of the second bearing. BRIEF DESCRIPTION OF THE DRAWINGS
[0025] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings: Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present application; Figure 2 It is a structural schematic diagram of the control mechanism part in the embodiment of the present application; Figure 3It is a structural schematic diagram of the transmission mechanism part in the embodiment of the present application; Figure 4 It is a schematic diagram of the structure of the sleeve part and the fan blade part in the embodiment of the present application.
[0026] : 100, transmission mechanism; 110, gear; 120, ball spline connection assembly; 121, spline shaft; 122, ball spline nut; 130, clutch assembly; 131, first clutch member; 132, second clutch member; 133, connecting portion; 134, meshing portion; 135, bite block; 136, bite surface; 137, guide surface; 140, second bearing; 150, sleeve; 160, fan blade; 200, control mechanism; 210, electric push cylinder; 220, connecting rod; 230, first bearing; 240, distance detection sensor; 250, speed detection sensor; 300, motor; 400, housing; 500, flywheel. DETAILED DESCRIPTION
[0027] In order to more clearly explain the overall concept of this application, the following Figure 1-Figure 4 This application is described in further detail.
[0028] In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application may also be implemented in other ways different from those described herein. Therefore, the protection scope of the present application is not limited by the specific embodiments disclosed below. It should be noted that the embodiments of the present application and the features in each embodiment may be combined with each other without conflict.
[0029] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like 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, an electrical connection, or a communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.
[0030] The present application embodiment discloses a starter output transmission device. Figure 1 A starter output transmission device includes a transmission mechanism 100 and a control mechanism 200. The starter motor 300 is connected to the flywheel 500 of the engine through the transmission mechanism 100, and the control mechanism 200 is used to control the on and off of the transmission path.
[0031] The transmission mechanism 100 includes a gear 110, a ball spline connection assembly 120 and a clutch assembly 130. The ball spline connection assembly 120 includes a spline shaft 121 and a ball spline nut 122. The ball spline connection assembly 120 includes a spline shaft 121 and a ball spline nut 122. One end of the spline shaft 121 is transmission-connected to the output shaft of the motor 300, and the other end of the spline shaft 121 is rotationally connected to the housing 400 of the starter. The ball spline nut 122 is mounted on the spline shaft 121. When the spline shaft 121 rotates, the ball spline nut 122 rotates synchronously with the spline shaft 121, and the ball spline nut 122 can slide along the axial direction of the spline shaft 121. The gear 110 is coaxially rotationally connected with the spline shaft 121, and the gear 110 is located near the end of the spline shaft 121 away from the motor 300. The gear 110 is meshed with the flywheel 500 of the engine. The clutch assembly 130 includes a first clutch member 131 and a second clutch member 132 which can engage and disengage with each other. The first clutch member 131 is fixedly connected to the side of the ball spline nut 122 close to the gear 110, and the second clutch member 132 is fixedly connected to the side of the gear 110 close to the ball spline nut 122. The control mechanism 200 is connected to the ball spline nut 122. The control mechanism 200 is used to drive the ball spline nut 122 to move axially along the ball spline. The control mechanism 200 is electrically connected to the starter.
[0032] When the engine is started, the motor 300 drives the spline shaft 121 to rotate. After the motor 300 is started, a signal is transmitted to the control mechanism 200. The control mechanism 200 drives the ball spline nut 122 to move toward the gear 110, so that the first clutch 131 and the second clutch 132 are engaged. The gear 110 is connected to the ball spline nut 122 through the engagement of the first clutch 131 and the second clutch 132. The ball spline nut 122 rotates under the drive of the spline shaft 121. The ball spline nut 122 transmits the torque of the motor 300 to the gear 110, so that the gear 110 drives the flywheel 500 of the engine to rotate, and the flywheel 500 further drives the crankshaft to rotate, thereby starting the engine.
[0033] After the engine is started, the control mechanism 200 drives the ball spline nut 122 to move away from the gear 110, so that the first clutch 131 is separated from the second clutch 132. After the first clutch 131 is separated from the second clutch 132, the control mechanism 200 transmits a signal to the motor 300 to stop the motor 300, thereby reducing the possibility of the engine dragging the motor 300. During the process of starting the engine, the gear 110 and the flywheel 500 of the engine are kept in meshing state, and the on and off of the transmission path are controlled by the engagement and separation of the first clutch 131 and the second clutch 132, thereby improving the stability of the engine starting, reducing the wear of the gear 110, and increasing the service life of the starter, and alleviating the problem that the starter is easy to be maintained due to the failure of the electromagnetic core and the return spring. In addition, the end of the spline shaft 121 away from the motor 300 is rotatably connected to the housing 400 of the starter, thereby reducing the possibility of shaking of the spline shaft 121 during rotation and improving the stability of the engagement between the gear 110 and the flywheel 500 of the engine.
[0034] Reference Figure 1 A speed detection sensor 250 is installed on the spline shaft 121. The speed detection sensor 250 is used to detect the speed of the spline shaft 121. The speed detection sensor 250 is electrically connected to the control mechanism 200. When the value detected by the speed detection sensor 250 reaches the set value, the speed detection sensor 250 transmits a signal to the control mechanism 200, and the control mechanism 200 drives the first clutch 131 to separate from the second clutch 132, further reducing the possibility of damage to the motor 300 due to the engine flywheel 500 dragging the motor 300.
[0035] Reference Figure 1 , the first connecting member and the second connecting member are both provided on the spline shaft 121. The first clutch member 131 and the second clutch member 132 both include a connecting portion 133 and a bite portion; the connecting portion 133 is a cylindrical structure, the bite portion is connected to one axial end of the connecting portion 133, and the bite portion includes a plurality of bite blocks 135, and the plurality of bite blocks 135 are arranged along the circumference of the spline shaft 121. The bite block 135 includes a bite surface 136 perpendicular to the axial end surface of the connecting portion 133 and a guide surface 137 inclined toward the direction close to the connecting portion 133, the guide surface 137 of the bite block 135 is connected to the bite surface 136 of the adjacent bite block 135 close to the side of its guide surface 137, the connecting portion 133 of the first connecting member is fixedly connected to the ball spline nut 122, and the connecting portion 133 of the second clutch member 132 is fixedly connected to the gear 110.
[0036] After the starter works, the control mechanism 200 drives the ball spline nut 122 to move a set distance along the axial direction of the spline shaft 121 toward the gear 110, so that the engaging portion of the first clutch 131 and the engaging portion of the second clutch 132 engage with each other. At this time, the torque of the motor 300 is transmitted to the second clutch 132 through the ball spline nut 122 and the first clutch 131, thereby driving the gear 110 to rotate, and the flywheel 500 of the engine rotates driven by the gear 110 to start the engine.
[0037] When the engine is started, the control mechanism 200 drives the ball spline nut 122 to move in the reverse direction, so that the engaging portion between the first clutch member 131 and the second clutch member 132 is disengaged. At this time, the transmission path between the motor 300 and the gear 110 is cut off, preventing the engine flywheel 500 from reversely dragging the motor 300.
[0038] By setting the bite block 135 to include an bite surface 136 perpendicular to the axial end surface of the connecting portion 133 and a guide surface 137 inclined toward the connecting portion 133, the guide surface 137 of the bite block 135 is connected to the bite surface 136 of the adjacent bite block 135 close to its guide surface 137, so that the bite of the first clutch member 131 and the second clutch member 132 is smoother, the wear of the clutch assembly 130 is reduced, and at the same time, the vibration during the engine starting process is reduced, thereby increasing the service life of the starter.
[0039] The engaging portion and the connecting portion 133 are integrally formed, thereby improving the structural strength of the first clutch member 131 and the second clutch member 132 , and further improving the working stability of the transmission mechanism 100 .
[0040] Reference Figure 1 The control mechanism 200 includes an electric push cylinder 210, a connecting rod 220 and a first bearing 230. The cylinder body of the electric push cylinder 210 is fixedly connected to the housing 400 of the starter, and the piston rod of the electric push cylinder 210 is retracted along the axial direction of the spline shaft 121. The first bearing 230 is sleeved on the outer side of the ball spline nut 122, and the ball spline nut 122 is fixedly connected to the inner ring of the first bearing 230. One end of the connecting rod 220 is fixedly connected to the piston rod of the electric push cylinder 210, and the other end of the connecting rod 220 is fixedly connected to the outer ring of the first bearing 230. The electric push cylinder 210 is electrically connected to the motor 300.
[0041] After the motor 300 starts working, it transmits a signal to the electric push cylinder 210, and the electric push cylinder 210 drives the ball spline nut 122 to move towards the direction close to the gear 110. The movement of the ball spline nut 122 is controlled by the electric push cylinder 210, and the control of the moving distance of the ball spline nut 122 is more precise, thereby reducing the possibility of unstable connection between the first clutch 131 and the second clutch 132 due to the movement error of the ball spline nut 122.
[0042] Reference Figure 1 A distance detection sensor 240 is installed on the motor 300 . The distance detection sensor 240 is used to detect the distance between the motor 300 and the connecting rod 220 . The distance detection sensor 240 is electrically connected to the electric push cylinder 210 .
[0043] The distance between the motor 300 and the gear 110 is fixed. By detecting the distance between the connecting rod 220 and the motor 300, the distance that the electric push cylinder 210 needs to drive the first clutch 131 to move is checked. The electric push rod adjusts the length of the piston rod extension according to the signal transmitted by the distance detection sensor 240, thereby reducing the possibility of unstable connection between the first clutch 131 and the second clutch 132 due to the accumulation of errors caused by the electric push cylinder 210 driving the first clutch 131 to reciprocate multiple times.
[0044] Reference Figure 1 The gear 110 is rotatably connected to the spline shaft 121 through the second bearing 140. A sleeve 150 is provided on the side of the gear 110 away from the second clutch member 132. The sleeve 150 is coaxially fixedly connected to the gear 110. A fan blade 160 is installed inside the sleeve 150. The fan blade 160 is coaxially sleeved on the outer side of the spline shaft 121, and the fan blade 160 is fixedly connected to the inner wall of the sleeve 150.
[0045] Anything not described in this application can be achieved by adopting or drawing on existing technologies.
[0046] The various embodiments in this specification are described in a progressive manner, and the same or similar parts between the various embodiments can be referenced to each other, and each embodiment focuses on the differences from other embodiments.
[0047] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.
Claims
1. A starter output transmission device, Features: The invention comprises a transmission mechanism (100) and a control mechanism (200), wherein the transmission mechanism (100) comprises a gear (110), a ball spline connection assembly (120) and a clutch assembly (130), wherein the ball spline connection assembly (120) comprises a spline shaft (121) and a ball spline nut (122), wherein the spline shaft (121) is transmission-connected to an electric motor (300), wherein the ball spline nut (122) is connected to the spline shaft (121), wherein the gear (110) is rotationally connected to the spline shaft (121), and wherein the gear (110) is meshed with a flywheel (500) of an engine. The clutch assembly (130) comprises a first clutch member (131) and a second clutch member (132) which can engage with and disengage from each other, the first clutch member (131) being fixedly connected to a side of the ball spline nut (122) close to the gear (110), the second clutch member (132) being fixedly connected to a side of the gear (110) close to the ball spline nut (122), the control mechanism (200) being connected to the ball spline nut (122), the control mechanism (200) being used to drive the ball spline nut (122) to move axially along the ball spline, and the control mechanism (200) being electrically connected to the starter.
2. A starter output transmission device according to claim 1, Features: The first connecting member and the second connecting member are both arranged on the spline shaft (121); the first clutch member (131) and the second clutch member (132) both comprise a connecting portion (133) and a bite portion; the connecting portion (133) is a cylindrical structure; the bite portion is connected to one axial end of the connecting portion (133); the bite portion comprises a plurality of bite blocks (135); the plurality of bite blocks (135) are arranged along the circumference of the spline shaft (121); the bite blocks (135) comprise a plurality of bite blocks (135) perpendicular to the connecting portion (133); The guide surface (137) of the bite block (135) is connected to the bite surface (136) of the adjacent bite block (135) on the side close to its guide surface (137); the connecting portion (133) of the first connecting member is fixedly connected to the ball spline nut (122); and the connecting portion (133) of the second clutch member (132) is fixedly connected to the gear (110).
3. A starter output transmission device according to claim 2, Features: The engaging portion and the connecting portion (133) are integrally formed.
4. A starter output transmission device according to claim 2, Features: The control mechanism (200) comprises an electric push cylinder (210), a connecting rod (220) and a first bearing (230); the cylinder body of the electric push cylinder (210) is fixedly connected to the housing (400) of the starter; the piston rod of the electric push cylinder (210) is retracted and extended along the axial direction of the spline shaft (121); the first bearing (230) is sleeved on the outside of the ball spline nut (122); the ball spline nut (122) is fixedly connected to the inner ring of the first bearing (230); one end of the connecting rod (220) is fixedly connected to the piston rod of the electric push cylinder (210); the other end of the connecting rod (220) is fixedly connected to the outer ring of the first bearing (230); and the electric push cylinder (210) is electrically connected to the motor (300).
5. A starter output transmission device according to claim 4, Features: The motor (300) is provided with a distance detection sensor (240), the distance detection sensor (240) being used to detect the distance between the motor (300) and the connecting rod (220), and the distance detection sensor (240) is electrically connected to the electric push cylinder (210).
6. A starter output transmission device according to claim 4, Features: A rotation speed detection sensor (250) is provided on the spline shaft (121), the rotation speed detection sensor (250) is used to detect the rotation speed of the spline shaft (121), and the rotation speed detection sensor (250) is electrically connected to the electric push cylinder (210).
7. A starter output transmission device according to claim 1, Features: The gear (110) is rotationally connected to the spline shaft (121) via a second bearing (140); a sleeve (150) is provided on a side of the gear (110) away from the second clutch member (132); the sleeve (150) is coaxially fixedly connected to the gear (110); and a fan blade (160) is fixedly connected inside the sleeve (150).
8. A starter output transmission device according to claim 1, Features: One end of the spline shaft (121) away from the motor (300) is rotationally connected to a housing (400) of the starter.