Starting motor with damping structure

Abstract

The invention relates to the technical field of motors, in particular to a starting motor with a damping structure, and adopts the technical scheme that the starting motor comprises a transmission mechanism and a control mechanism, and the transmission mechanism and the control mechanism are matched to realize power transmission and control; a dustproof mechanism is arranged on the transmission mechanism and is used for preventing dust and dissipating heat of the transmission mechanism; a damping mechanism is arranged on the transmission mechanism, and the damping mechanism is used for damping the transmission mechanism which stops running. The motor is provided with a system with damping locking and active heat dissipation cooperating at the starting moment, and the problems of armature winding insulation aging caused by traditional passive heat dissipation and pinion meshing failure caused by a damping structure under starting impact can be effectively solved.

Description

Technical Field

[0001] The invention relates to the technical field of electric motors, and in particular to a starter motor with a shock absorbing structure. Background Art

[0002] As a core component of the engine, the reliability of the starter motor directly affects the starting performance and service life of the vehicle. In the prior art, the heat dissipation system of the starter motor has significant defects: the instantaneous current of hundreds of amperes at the moment of starting causes the temperature of the armature winding and brush assembly to rise sharply, and the traditional heat dissipation method that relies on natural convection of the outer shell is easily affected by dust and oil blocking the heat dissipation holes. Especially in dusty working conditions, the passive heat dissipation mechanism cannot dissipate heat in time, which accelerates the aging of internal insulation materials and the wear of brush commutators, seriously threatening the performance and life of the motor.

[0003] At the same time, traditional shock-absorbing structures such as rubber cushions and spring dampers cause new technical contradictions when suppressing vibrations: when the armature shaft is driven by electromagnetic force to rotate at high speed, the flexible characteristics of the shock-absorbing device cause the initial meshing position deviation between the pinion and the flywheel ring gear. Specifically, dynamic displacement interference causes uneven contact stress on the tooth surface, timing mismatch causes the meshing phase to be misaligned with the motor start-up timing, and flexible support weakens the transmission stiffness and causes high-frequency micro-oscillation. These problems lead to meshing failures such as tooth hitting and tooth skipping, reduce the success rate of starting and aggravate tooth surface wear.

[0004] Therefore, a starter motor with a damping structure is proposed to solve the above problems. Summary of the invention

[0005] The purpose of the present invention is to provide a starter motor with a shock-absorbing structure, which has a system that coordinates shock-absorbing locking and active heat dissipation at the moment of starting, and can effectively solve the problems of armature winding insulation aging caused by traditional passive heat dissipation and pinion meshing failure caused by the shock-absorbing structure under starting impact.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a starter motor with a shock-absorbing structure, comprising a transmission mechanism and a control mechanism, wherein the transmission mechanism and the control mechanism cooperate to realize power transmission and control; a dust-proof mechanism is arranged on the transmission mechanism, and the dust-proof mechanism protects the transmission mechanism from dust and dissipates heat; a shock-absorbing mechanism is arranged on the transmission mechanism, and the shock-absorbing mechanism reduces the vibration of the transmission mechanism when it stops running.

[0007] Preferably, the shock absorbing mechanism comprises a first mounting seat, a spring assembly, a limiting ring and a second mounting seat; The spring assembly is arranged between the first mounting seat and the second mounting seat, and the limiting ring is installed on the spring assembly to limit the compression stroke of the spring assembly; The shock absorbing mechanism is connected to the engine and the transmission mechanism through a first mounting seat and a second mounting seat.

[0008] When the above technical solution is adopted, the cooperation between the spring assembly and the limit ring realizes the dual functions of dynamic shock absorption and rigid locking, and the gradient absorption of the starting impact energy is realized through the mechanical limitation of the compression stroke of the spring assembly by the limit ring.

[0009] Specifically, the spring assembly absorbs vibration energy through elastic deformation when the motor stops running, and the limit ring provides rigid support when the spring assembly is compressed to a critical value to avoid structural failure caused by excessive compression.

[0010] Preferably, the transmission mechanism comprises a first housing, a stator body, a rotor body, a one-way clutch, a gear body and a sealing baffle; The first shell is provided with an air inlet hole and a first reserved groove, the first shell is provided with a sealing baffle, and the sealing baffle is provided with an air outlet hole; One end of the rotor body is used for mounting a one-way clutch and a gear body, and the other end of the rotor body is provided with a spline.

[0011] When the above technical solution is adopted, the combination of the sealing baffle and the air outlet realizes the integrated design of dust prevention and directional heat dissipation, and a controllable airflow channel is formed through the cooperation of the air inlet hole of the first shell and the sealing baffle.

[0012] Specifically, the sealing baffle closes the air inlet during normal operation to prevent dust from entering; when heat dissipation is required, the baffle is opened through the control mechanism, and the air flows into the inner cavity of the first shell through the air inlet and is then discharged through the air outlet to achieve heat dissipation.

[0013] Preferably, the rotor body drives the gear body to rotate in one direction through a one-way clutch, the one-way clutch is provided with a movable sleeve, a limit frame is installed on the movable sleeve, and the limit frame passes through the first reserved groove.

[0014] When the above technical solution is adopted, the linkage between the one-way clutch and the limit frame realizes the precise control of the transmission direction and the displacement limitation, and the mechanical stop device is formed by the structure in which the limit frame passes through the first reserved groove.

[0015] Specifically, the one-way clutch only allows the gear body to rotate in one direction, and the limit frame can limit the elastic deformation of the shock absorber mechanism when the motor is started, thereby ensuring stable engagement between the gear body and the flywheel ring gear. At the same time, a sealing gasket for sealing the first reserved groove is provided on the limit frame on the inner side of the first shell.

[0016] Preferably, a through hole for the limiting frame to pass through is opened on the spring assembly, and the limiting ring is installed below the through hole.

[0017] When the above technical solution is adopted, the layout of the through hole and the limit ring of the spring assembly realizes the effective limitation of the elastic deformation of the shock absorbing mechanism during the motor starting stage.

[0018] Specifically, the limit frame passes through the through hole of the spring assembly. At the moment of motor starting, the limit frame can limit the elastic deformation of the shock absorbing mechanism, avoiding the initial meshing position deviation between the pinion and the flywheel ring gear due to the flexible characteristics of the shock absorbing mechanism, thereby ensuring the stable meshing of the gear body and the flywheel ring gear.

[0019] Preferably, the control mechanism comprises a second housing, an electromagnet assembly, a movable iron core, a sleeve and an inner rod; The electromagnet assembly drives the sleeve to move linearly along the inner rod through the movable iron core, and the sleeve adjusts the position of the one-way clutch through the lever, one end of the lever is connected to the sleeve, and the other end of the lever is connected to the movable sleeve; A resetting elastic member is arranged in the second shell, and the resetting elastic member is used for driving the sleeve to reset.

[0020] When the above technical solution is adopted, the combination of the electromagnet assembly and the resetting elastic member realizes fast-response transmission control, and forms a precise displacement adjustment system through the linkage mechanism of the sleeve and the lever.

[0021] Specifically, the electromagnet assembly drives the sleeve to move and adjusts the position of the one-way clutch through the lever to achieve the engagement and disengagement of the gear body; the reset elastic member quickly resets the sleeve when the power is off to ensure the reliability of the system.

[0022] Preferably, the dustproof mechanism comprises a dustproof cover, a heat dissipation component and a dustproof baffle; the heat dissipation component is used for heat dissipation of the transmission mechanism; The dust cover is sleeved on the outside of the first shell and seals the air inlet hole, and a mounting hole is provided on the dust cover; The heat dissipation assembly is arranged on the dust cover, and the heat dissipation assembly includes a connecting ring, a heat dissipation impeller and a sealing ring; The connecting ring is rotatably mounted in the mounting hole and connected to the heat dissipation impeller; The heat dissipation impeller is provided with a keyway matching the spline, the heat dissipation impeller is fixedly connected to the sealing ring, the spline is triangular cone-shaped, and when the heat dissipation impeller moves axially, the keyway and the spline can be meshed; The sealing ring is used to seal the air outlet hole.

[0023] When the above technical solution is adopted, the integration of the heat dissipation impeller and the sealing ring realizes the coordinated optimization of active heat dissipation and dust prevention, and a synchronous drive structure is formed through the cooperation of the keyway and the spline.

[0024] Specifically, the heat dissipation impeller generates airflow as the rotor body rotates, and the direction of the airflow is guided by the cooperation of the sealing ring and the air outlet, effectively taking away the heat; at the same time, the dust cover and dust baffle prevent dust from entering, protecting the internal structure.

[0025] Preferably, a connecting rod is provided on the dust baffle, and the connecting rod passes through the second reserved groove and is connected to the sleeve; The dustproof baffle is used to seal the air inlet.

[0026] When the above technical solution is adopted, the linkage between the dust baffle and the sleeve realizes a dust prevention strategy that is adaptive to the working conditions, and a mechanical synchronization mechanism is formed through the cooperation between the connecting rod and the second reserved groove.

[0027] Specifically, when the sleeve moves, the dust baffle moves synchronously, opening the air inlet to dissipate heat when the motor is running and closing the air inlet to prevent dust when the motor stops, dynamically adjusting according to the working conditions.

[0028] Preferably, the blades of the heat dissipation impeller are spiral-shaped, and the heat dissipation impeller and the air outlet hole of the sealing baffle form a guide channel.

[0029] When the above technical solution is adopted, the design of the spiral blades and the guide channel achieves a significant improvement in the heat dissipation efficiency, and a bionic fluid mechanics structure is formed by optimizing the blade shape.

[0030] Specifically, the spiral blades of the heat dissipation impeller generate high-speed airflow when rotating, which works together with the guide channel formed by the air outlet holes of the sealing baffle to enhance the heat exchange efficiency.

[0031] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention realizes the dual functions of active heat dissipation and dust prevention of the transmission mechanism by setting up a dust prevention mechanism. The dust prevention mechanism actively guides the airflow circulation through the internal structure during operation, replacing the traditional passive heat dissipation method, effectively reducing the armature winding temperature and delaying the aging of the insulation material.

[0032] 2. The present invention suppresses the vibration displacement of the transmission mechanism at the moment of starting by setting the linkage between the damping mechanism and the transmission mechanism. The damping mechanism provides rigid support under the impact of starting, avoiding the initial meshing deviation between the pinion and the flywheel gear ring caused by the flexible deformation of the traditional damping structure, and reducing the risk of tooth hitting and tooth jumping.

[0033] 3. The present invention realizes dynamic sealing of the air inlet through the cooperation of the dustproof mechanism and the transmission mechanism. When the transmission mechanism is running, the dustproof mechanism automatically opens the heat dissipation channel; when it stops, it closes the dustproof mechanism, which solves the problem that the traditional heat dissipation holes are easily blocked by dust and prolongs the life of the motor.

[0034] 4. The present invention realizes efficient coordination of power transmission and control through precise coordination between the transmission mechanism and the control mechanism. At the same time, the shock absorbing mechanism absorbs vibration energy through elastic buffering when the transmission mechanism stops, ensuring static stability and taking into account both dynamic rigidity and static buffering requirements.

[0035] In summary, the present invention breaks through the technical contradiction between heat dissipation and vibration reduction of the traditional starter motor through the system integration of the transmission mechanism, the control mechanism, the dust prevention mechanism and the vibration reduction mechanism, and significantly improves the reliability and service life of the motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 It is a schematic diagram of the main structure of the present invention; Figure 2 It is a cross-sectional view from a first perspective of the present invention; Figure 3 It is another perspective structural schematic diagram of the present invention; Figure 4 For the present invention Figure 3 A schematic diagram of the partially enlarged structure; Figure 5 is a cross-sectional view from a second viewing angle of the present invention; Figure 6 It is a cross-sectional view from a third perspective of the present invention; Figure 7 For the present invention Figure 6 A schematic diagram of the partially enlarged structure; Figure 8 It is a schematic diagram of the connection structure between the dust cover and the dust baffle of the present invention; Fig. 9 It is a schematic diagram of the connection structure of the heat dissipation component of the present invention.

[0037] In the figure: 1, transmission mechanism; 11, first housing; 111, air inlet; 112, first reserved slot; 12, stator body; 13, rotor body; 131, spline; 14, one-way clutch; 141, movable sleeve; 15, gear body; 16, sealing baffle; 161, air outlet; 2, dustproof mechanism; 21, dust cover; 211, mounting hole; 22, heat dissipation assembly; 221, connecting ring; 222, heat dissipation impeller ; 2221, keyway; 223, sealing ring; 23, dust baffle; 231, connecting rod; 3, control mechanism; 31, second shell; 311, second reserved groove; 32, electromagnet assembly; 33, movable iron core; 34, sleeve; 35, inner rod; 36, reset elastic member; 4, shock absorbing mechanism; 41, first mounting seat; 42, spring assembly; 43, limit ring; 44, second mounting seat; 5, lever; 6, limit frame. DETAILED DESCRIPTION

[0038] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0039] Embodiment 1: Figures 1 to 9 As shown, an embodiment of the present invention is: a starter motor with a shock absorbing structure, comprising a transmission mechanism 1 and a control mechanism 3, the transmission mechanism 1 and the control mechanism 3 cooperate to realize power transmission and control; a dustproof mechanism 2 is provided on the transmission mechanism 1, the dustproof mechanism 2 prevents dust and dissipates heat for the transmission mechanism 1; a shock absorbing mechanism 4 is provided on the transmission mechanism 1, the shock absorbing mechanism 4 reduces the vibration of the transmission mechanism 1 that stops running.

[0040] Specifically, by providing the dustproof mechanism 2, the dual functions of active heat dissipation and dust prevention are realized for the transmission mechanism 1. During operation, the dustproof mechanism 2 actively guides the airflow circulation through the internal structure such as the heat dissipation channel, replacing the traditional passive heat dissipation method, effectively reducing the armature winding temperature, and delaying the aging of the insulation material.

[0041] By setting the linkage between the damping mechanism 4 and the transmission mechanism 1, the vibration displacement of the transmission mechanism 1 is suppressed at the moment of starting. The damping mechanism 4 provides rigid support under the impact of starting, avoiding the initial meshing deviation between the pinion and the flywheel ring gear caused by the flexible deformation of the traditional damping structure, and reducing the risk of tooth hitting and tooth jumping.

[0042] The dynamic sealing of the air inlet is achieved through the cooperation between the dustproof mechanism 2 and the transmission mechanism 1. When the transmission mechanism 1 is running, the dustproof mechanism 2 automatically opens the heat dissipation channel; when it stops, it closes the dustproof channel, which solves the problem that the traditional heat dissipation holes are easily blocked by dust and prolongs the life of the motor.

[0043] Through the precise coordination of the transmission mechanism 1 and the control mechanism 3, efficient coordination of power transmission and control is achieved. At the same time, the shock absorbing mechanism 4 absorbs vibration energy through elastic buffering when the transmission mechanism 1 stops, ensuring static stability and taking into account both dynamic rigidity and static buffering requirements.

[0044] In summary, through the system integration of the transmission mechanism 1, the control mechanism 3, the dust prevention mechanism 2 and the shock absorbing mechanism 4, the technical contradiction between heat dissipation and shock absorption of the traditional starter motor is broken through, and the reliability and service life of the motor are significantly improved.

[0045] Embodiment 2: In order to realize the gradient absorption and rigid locking of the starting impact energy, as Figure 2 and Figure 4As shown, in this embodiment, the shock absorbing mechanism 4 includes a first mounting seat 41, a spring assembly 42, a limiting ring 43 and a second mounting seat 44, which is connected to the engine through the first mounting seat 41, and the second mounting seat 44 is connected to the first housing 11 of the transmission mechanism 1. The spring assembly 42 is arranged between the first mounting seat 41 and the second mounting seat 44, and the limiting ring 43 is installed below the through hole of the spring assembly 42.

[0046] The rotor body 13 of the transmission mechanism 1 drives the gear body 15 to rotate in one direction through the one-way clutch 14. The limit frame 6 is installed on the movable sleeve 141 of the one-way clutch 14. The limit frame 6 passes through the first reserved groove 112 of the first housing 11 and is matched with the through hole clearance of the spring assembly 42. When the sleeve 34 of the control mechanism 3 drives the movable sleeve 141 to axially displace through the lever 5, the limit frame 6 contacts the limit ring 43, and limits the spring assembly 42 at the moment of starting, so that the shock absorbing mechanism 4 presents a rigid state, ensuring that the gear body 15 and the flywheel gear ring are precisely meshed; when the machine is stopped, the spring assembly 42 elastically deforms to absorb vibration energy, and the limit ring 43 provides rigid support during high-frequency vibration.

[0047] The spring assembly 42, the limiting ring 43 and the limiting frame 6 are linked to avoid meshing deviation caused by flexible deformation through rigid limiting during startup, and continue to absorb vibration through elastic deformation during shutdown.

[0048] The mechanical stop device of the limiting frame 6 and the first reserved groove 112 also limits the displacement of the movable sleeve 141, prevents the one-way clutch 14 from axial movement, and prolongs the service life of the transmission components.

[0049] The sealing gasket inside the first housing 11 seals the first reserved groove 112 through the limiting frame 6 to prevent dust from entering.

[0050] Embodiment 3: In order to realize the coordination of dust prevention and heat dissipation with adaptive working conditions, Figure 5 , Figure 8 and Fig. 9 As shown, in this embodiment, the control mechanism 3 includes a second housing 31, an electromagnet assembly 32, a movable iron core 33, a sleeve 34 and an inner rod 35. A reset elastic member 36 is arranged in the second housing 31 to drive the sleeve 34 to reset.

[0051] The dust cover 21 of the dustproof mechanism 2 is sleeved on the outside of the first housing 11, and the dust baffle 23 is connected to the sleeve 34 of the control mechanism 3 through a connecting rod 231, and the connecting rod 231 passes through the second reserved groove 311 of the second housing 31. The heat dissipation impeller 222 of the heat dissipation assembly 22 is rigidly connected to the spline 131 of the rotor body 13 through a keyway 2221, and generates a spiral airflow as the rotor body 13 rotates, and forms a guide channel through the sealing ring 223 and the air outlet 161 of the sealing baffle 16. At the same time, the heat dissipation impeller 222 is connected to the connecting ring 221 set in the mounting hole 211, and the connecting ring 221 rotates on the dust cover 21, thereby improving the stability of the heat dissipation impeller 222 when rotating.

[0052] When the electromagnet assembly 32 is energized, the movable iron core 33 drives the sleeve 34 to move axially along the inner rod 35, and the position of the movable sleeve 141 of the one-way clutch 14 is adjusted through the lever 5, so that the gear body 15 is meshed with the flywheel ring gear. At the same time, the sleeve 34 drives the dust baffle 23 to open the air inlet 111 of the first housing 11 through the connecting rod 231. At this time, the heat dissipation impeller 222 rotates with the rotor body 13 to generate high-speed airflow, and discharges heat through the air outlet 161.

[0053] When the electromagnet assembly 32 is powered off, the reset elastic member 36 drives the sleeve 34 to reset, the lever 5 drives the movable sleeve 141 to retract, and the gear body 15 is separated. At the same time, the dust baffle 23 synchronously closes the air inlet 111 to prevent dust from entering.

[0054] The combination of the electromagnet assembly 32 and the resetting elastic member 36 increases the response time of the sleeve 34, thereby ensuring that the gear body 15 is quickly engaged and disengaged, thereby improving the starting efficiency.

[0055] The linkage mechanism between the sleeve 34 and the lever 5 achieves the axial displacement accuracy of the movable sleeve 141, avoids the stress concentration on the tooth surface contact, and reduces wear.

[0056] The dust baffle 23 is mechanically linked with the sleeve 34, which is turned on for heat dissipation during operation and closed for dust prevention during shutdown, thus taking into account both heat dissipation and protection requirements.

[0057] The sealing ring 223 and the air outlet hole 161 are precisely matched to form a guide channel, which prevents oil from entering the first housing 11 and protects the stator body 12 and the rotor body 13 .

[0058] Embodiment 4: In order to achieve the timing synchronization of transmission control and heat dissipation channel, as Figure 3 , Figure 4 ,and Figure 6 , Figure 7 and Fig. 9As shown, in this embodiment, one end of the lever 5 of the control mechanism 3 is connected to the sleeve 34, and the other end is connected to the movable sleeve 141 of the one-way clutch 14. When the electromagnet assembly 32 drives the sleeve 34 to move, the lever 5 drives the movable sleeve 141 to axially displace, and the sealing baffle 16 is pushed open through the limit frame 6, so that the sealing ring 223 is separated from the air outlet 161 to form a guide channel. At the same time, the dust baffle 23 is linked with the sleeve 34 through the connecting rod 231 to synchronously open the air inlet 111.

[0059] The heat dissipation impeller 222 rotates with the rotor body 13 to generate a spiral airflow, which is discharged through the air outlet 161, thereby achieving synchronous control of the meshing of the gear body 15 and the opening of the heat dissipation.

[0060] The synchronization mechanism ensures that the heat dissipation channel is opened at the moment of startup, thereby reducing the temperature rise rate of the winding and effectively protecting the insulation of the armature winding.

[0061] The linkage between the lever 5 and the movable sleeve 141 ensures the axial displacement accuracy of the one-way clutch 14, improves the uniformity of the contact stress distribution on the tooth surface, and reduces wear.

[0062] The dynamic opening of the air inlet 111 prevents the heat dissipation holes from being exposed when not in operation, thereby reducing the amount of dust entering and extending the service life of the motor.

[0063] When the present invention is used: When the driver turns the key or presses the start button, the electromagnet assembly 32 of the control mechanism 3 is energized, generating an electromagnetic attraction force to drive the movable iron core 33 to move, thereby pulling the sleeve 34 to move axially along the inner rod 35 .

[0064] The sleeve 34 drives the movable sleeve 141 on the one-way clutch 14 to axially displace through the lever 5, so that the gear body 15 is meshed with the flywheel gear ring.

[0065] At this time, the limit frame 6 moves with the movable sleeve 141, passes through the through hole on the spring assembly 42 of the shock absorbing mechanism 4, and then contacts the limit ring 43, limiting the operation of the spring assembly 42 at the moment of starting, making the shock absorbing mechanism 4 rigid, ensuring that the gear body 15 is accurately meshed with the flywheel gear ring, and avoiding the risk of tooth hitting due to flexible deformation.

[0066] At the same time, when the sleeve 34 moves, the dust baffle 23 is driven by the connecting rod 231 to open the air inlet 111 of the first shell 11 .

[0067] Since the spline 131 is in a triangular cone shape, when the heat dissipation impeller 222 moves axially, the keyway 2221 and the spline 131 can be meshed, so that the rotor body 13 drives the heat dissipation impeller 222 to rotate, and the spiral blades generate high-speed airflow, which discharges heat through the guide channel formed by the sealing ring 223 and the air outlet 161, thereby reducing the armature winding temperature.

[0068] After the electromagnet assembly 32 is powered off, the reset elastic member 36 drives the sleeve 34 to reset, the lever 5 drives the movable sleeve 141 to retract, and the gear body 15 is separated from the flywheel gear ring.

[0069] The spring assembly 42 recovers its elastic deformation and absorbs the vibration energy of the engine when the transmission mechanism 1 stops.

[0070] The dustproof baffle 23 is reset along with the sleeve 34 to reseal the air inlet 111 to prevent dust from intruding.

[0071] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It is obvious to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is defined by the attached claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention. Any figure mark in the claims should not be regarded as limiting the claims involved.

[0072] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A starter motor with a damping structure, comprising a transmission mechanism (1) and a control mechanism (3), characterized in that: The transmission mechanism (1) cooperates with the control mechanism (3) to realize power transmission and control; the transmission mechanism (1) is provided with a dustproof mechanism (2), and the dustproof mechanism (2) protects the transmission mechanism (1) from dust and dissipates heat; the transmission mechanism (1) is provided with a shock absorbing mechanism (4), and the shock absorbing mechanism (4) reduces the vibration of the transmission mechanism (1) when it stops running.

2. A starter motor with a damping structure according to claim 1, characterized in that: The shock absorbing mechanism (4) comprises a first mounting seat (41), a spring assembly (42), a limiting ring (43) and a second mounting seat (44); The spring assembly (42) is arranged between the first mounting seat (41) and the second mounting seat (44), and the limiting ring (43) is installed on the spring assembly (42) to limit the compression stroke of the spring assembly (42); The shock absorbing mechanism (4) is connected to the engine and the transmission mechanism (1) via a first mounting seat (41) and a second mounting seat (44).

3. The starter motor with a damping structure according to claim 1, characterized in that: The transmission mechanism (1) comprises a first housing (11), a stator body (12), a rotor body (13), a one-way clutch (14), a gear body (15) and a sealing baffle (16); The first shell (11) is provided with an air inlet hole (111) and a first reserved groove (112); the first shell (11) is provided with a sealing baffle (16); the sealing baffle (16) is provided with an air outlet hole (161); One end of the rotor body (13) is used to mount a one-way clutch (14) and a gear body (15), and the other end of the rotor body (13) is provided with a spline (131).

4. A starter motor with a damping structure according to claim 3, characterized in that: The rotor body (13) drives the gear body (15) to rotate in one direction via the one-way clutch (14); a movable sleeve (141) is provided on the one-way clutch (14); a limit frame (6) is installed on the movable sleeve (141); and the limit frame (6) passes through the first reserved groove (112).

5. The starter motor with a shock absorbing structure according to claim 2, characterized in that: The spring assembly (42) is provided with a through hole for the limiting frame (6) to pass through, and the limiting ring (43) is installed below the through hole.

6. The starter motor with a shock absorbing structure according to claim 1, characterized in that: The control mechanism (3) comprises a second housing (31), an electromagnet assembly (32), a movable iron core (33), a sleeve (34) and an inner rod (35); The electromagnet assembly (32) drives the sleeve (34) to move linearly along the inner rod (35) via the movable iron core (33); the sleeve (34) adjusts the position of the one-way clutch (14) via the lever (5); one end of the lever (5) is connected to the sleeve (34); and the other end of the lever (5) is connected to the movable sleeve (141); A resetting elastic member (36) is disposed in the second housing (31), and the resetting elastic member (36) is used to drive the sleeve (34) to reset.

7. The starter motor with a shock absorbing structure according to claim 1, characterized in that: The dustproof mechanism (2) comprises a dustproof cover (21), a heat dissipation component (22) and a dustproof baffle (23); the heat dissipation component (22) is used for heat dissipation of the transmission mechanism (1); The dust cover (21) is sleeved on the outside of the first shell (11) and seals the air inlet (111); a mounting hole (211) is provided on the dust cover (21); The heat dissipation component (22) is arranged on the dust cover (21), and the heat dissipation component (22) comprises a connecting ring (221), a heat dissipation impeller (222) and a sealing ring (223); The connecting ring (221) is rotatably mounted in the mounting hole (211) and is connected to the heat dissipation impeller (222); The heat dissipation impeller (222) is provided with a keyway (2221) matching the spline (131), and the heat dissipation impeller (222) is fixedly connected to the sealing ring (223); The sealing ring (223) is used to seal the air outlet hole (161).

8. The starter motor with a damping structure according to claim 7, characterized in that: The dust baffle (23) is provided with a connecting rod (231), and the connecting rod (231) passes through the second reserved groove (311) and is connected to the sleeve (34); The dustproof baffle (23) is used to seal the air inlet hole (111).

9. The starter motor with a shock absorbing structure according to claim 7, characterized in that: The blades of the heat dissipation impeller (222) are spiral-shaped, and the heat dissipation impeller (222) and the air outlet hole (161) of the sealing baffle (16) form a guide channel.

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