A starter reduction mechanism provided with a buffer protection function

Abstract

The utility model discloses a starter reduction mechanism with buffer protection function relates to starter technical field, including motor, motor output fixedly connected with speed reducer, the output gear is fixedly connected with speed reducer output, the one side fixed connection of speed reducer away from motor has the installation box, the installation box is the fan -shaped structure, and its side is equipped with the arc structure's guide groove, the output gear rotation is connected in the installation box inside. This kind of starter reduction mechanism with buffer protection function, when the vibration or impact occurs, through the kinetic gear along the arc guide groove slip friction energy consumption, and the impact force is transmitted to the connecting rod system through the motion shaft, and the controllable elastic displacement is converted through the sub connecting rod slip and the main connecting rod rotation, and the impact energy is significantly dispersed and attenuated, the problem such as gear fracture, bearing damage under the rigid impact of starter under starting or mutation load is prevented, and the durability is improved.

Description

Technical Field

[0001] This utility model relates to the field of starter technology, specifically to a starter deceleration mechanism with a buffer protection function. Background Technology

[0002] A starter motor reduction mechanism is a mechanical device installed on a car starter motor. Its main function is to increase the starter motor's output torque through gear reduction, thereby enabling the engine to turn quickly and powerfully when starting.

[0003] For example, Chinese Patent Publication No. CN211692687U discloses a starter reduction gear mechanism, including a housing, an electromagnetic switch mounted on the upper surface of the housing, a heat sink on one side of the outer surface of the housing, heat sink with uniformly distributed heat sink fins on the outer surface of the heat sink, a front cover mounted on one end of the housing, fixed lugs on both sides of the front cover, a contact gear mounted on one end of the front cover, a connecting seat on one side of the inner wall of the front cover, a front gear mounted on one side of the connecting seat, a rear gear mounted on the other side of the connecting seat, a connecting shaft on one end of the contact gear, a rotor mounted inside the housing, a winding mounted on one side of the rotor, and a drive shaft mounted on one end of the rotor. This design simplifies the internal reduction gear mechanism and adds a heat dissipation mechanism.

[0004] In existing technologies, during the start-up process or when encountering sudden load changes, vibration energy is rapidly and directly transmitted to key transmission components such as the output gear, resulting in a large instantaneous rigid impact force between components, which seriously affects the reliability and service life of the equipment. Utility Model Content

[0005] The purpose of this utility model is to provide a starter deceleration mechanism with a buffer protection function to solve the problem in the background art where vibration energy is quickly and directly transmitted to key transmission components such as the output gear during the start-up process or when encountering sudden load changes, resulting in a large rigid impact force between components instantaneously.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a starter deceleration mechanism with buffer protection function, comprising a motor, wherein a reducer is fixedly connected to the output end of the motor, and an output gear is fixedly connected to the output end of the reducer; The reducer is fixedly connected to a mounting box on the side away from the motor. The mounting box has a fan-shaped structure and an arc-shaped guide groove on its side. The output gear is rotatably connected inside the mounting box. A moving gear is slidably and rotatably connected inside the guide groove. The moving gear meshes with the output gear inside the mounting box.

[0007] Preferably, a fixed flange is fixedly connected to the side of the reducer away from the motor, and the fixed flange is located outside the output gear. A connecting flange is fixedly connected to the side of the mounting box near the reducer. The mounting box and the connecting flange are connected to each other by bolts.

[0008] Preferably, the mounting box has a mounting hole on the side away from the reducer, the mounting hole and the output gear are located on the same axis, and the main connecting rod is rotatably connected inside the mounting hole.

[0009] Preferably, a safety ring is rotatably connected to the outer side of the connection between the mounting box and the connecting flange, and a secondary connecting rod that is parallel to the main connecting rod is slidably connected to one side of the safety ring.

[0010] Preferably, a motion shaft is fixedly connected between the end of the secondary connecting rod away from the safety ring and the end of the main connecting rod away from the mounting hole, and the motion shaft passes through the center of the motion gear and is rotatably connected to it.

[0011] Preferably, a hinge seat is fixedly connected to the top center of the main connecting rod, a fixing seat is fixedly connected to the top of the mounting box near the main connecting rod, and a cylinder is installed on the top of the main connecting rod and the outside of the mounting box.

[0012] Preferably, a connecting shaft is fixedly connected to the middle of the outer side of the cylinder, and the connecting shaft is rotatably connected to the inside of the fixed seat. A piston rod is slidably connected inside the cylinder, and the lower end of the piston rod extends downward through the bottom of the cylinder and is hinged to the hinge seat.

[0013] Preferably, a spring is sleeved on the outside of the piston rod, and a control valve is fixedly connected to the top of the cylinder, the control valve being connected to an external air supply device.

[0014] Compared with the prior art, the beneficial effects of this utility model are: This starter deceleration mechanism with buffer protection function dissipates energy through friction by sliding the moving gear along the arc-shaped guide groove when vibration or impact occurs. At the same time, the impact force is transmitted to the linkage system through the moving shaft, and is converted into controllable elastic displacement through the sliding of the secondary linkage and the rotation of the main linkage. This significantly disperses and attenuates the impact energy, preventing problems such as gear breakage and bearing damage caused by rigid impact under starting or sudden load, thus improving durability.

[0015] The cylinder receives an external air source through a control valve, drives the piston rod to compress the spring, and provides elastic restoring force while absorbing the impact; the linkage system links the motion shaft, so that the motion gear adaptively adjusts its position in the guide groove, preventing power transmission interruption caused by post-impact reset delay and meshing misalignment, and ensuring that the output gear meshes smoothly with the external equipment. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the exploded structure of this utility model; Figure 3 This is a schematic diagram of the mounting box structure of this utility model; Figure 4 This is a schematic diagram of the motion gear structure of this utility model; Figure 5 This is a schematic diagram of the connecting rod structure of this utility model; Figure 6 This is a schematic diagram of the cross-sectional structure of the cylinder of this utility model.

[0017] In the diagram: 1. Motor; 2. Reducer; 3. Output gear; 4. Fixed flange; 5. Mounting box; 6. Connecting flange; 7. Guide groove; 8. Moving gear; 9. Mounting hole; 10. Main connecting rod; 11. Safety ring; 12. Secondary connecting rod; 13. Moving shaft; 14. Hinge seat; 15. Fixed seat; 16. Cylinder; 17. Connecting shaft; 18. Piston rod; 19. Spring; 20. Control valve. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] Example 1: Please refer to Figure 1 - Figure 6This utility model provides the following technical solution: a starter deceleration mechanism with buffer protection function, including a motor 1, a reducer 2 fixedly connected to the output end of the motor 1, and an output gear 3 fixedly connected to the output end of the reducer 2; a mounting box 5 fixedly connected to the side of the reducer 2 away from the motor 1, the mounting box 5 having a fan-shaped structure, and an arc-shaped guide groove 7 on its side, the output gear 3 being rotatably connected inside the mounting box 5, a moving gear 8 being slidably and rotatably connected inside the guide groove 7, the moving gear 8 meshing with the output gear 3 inside the mounting box 5; a fixed flange 4 fixedly connected to the side of the reducer 2 away from the motor 1, the fixed flange 4 being located outside the output gear 3, a connecting flange 6 fixedly connected to the side of the mounting box 5 near the reducer 2, the mounting box 5 and the connecting flange 6 being connected to each other by bolts; a mounting hole 9 is provided on the side of the mounting box 5 away from the reducer 2, the mounting hole 9 and the output gear 3 being located on the same axis, and a main connecting rod 10 being rotatably connected inside the mounting hole 9; A safety ring 11 is rotatably connected to the outer side of the connection between the housing 5 and the connecting flange 6. A secondary connecting rod 12, parallel to the main connecting rod 10, is slidably connected to one side of the safety ring 11. A motion shaft 13 is fixedly connected between the end of the secondary connecting rod 12 away from the safety ring 11 and the end of the main connecting rod 10 away from the mounting hole 9. The motion shaft 13 passes through the center of the motion gear 8 and is rotatably connected to it. A hinge seat 14 is fixedly connected to the middle of the top of the main connecting rod 10. A fixed seat 15 is fixedly connected to the top of the housing 5 near the main connecting rod 10. A cylinder 16 is installed on the top of the main connecting rod 10 and the outer side of the housing 5. A connecting shaft 17 is fixedly connected to the middle of the outer side of the cylinder 16. The connecting shaft 17 is rotatably connected to the inside of the fixed seat 15. A piston rod 18 is slidably connected inside the cylinder 16. The lower end of the piston rod 18 passes through the bottom of the cylinder 16 and extends downward to be hinged to the hinge seat 14. A spring 19 is sleeved on the outer side of the piston rod 18. A control valve 20 is fixedly connected to the top of the cylinder 16. The control valve 20 is connected to an external air supply device.

[0020] When the mechanism is started, motor 1 generates rotational torque as a power source, which is directly transmitted to reducer 2 through its output end. The output end of reducer 2 is fixedly connected to output gear 3. Therefore, output gear 3 receives torque and starts to rotate. Output gear 3 meshes with motion gear 8, driving motion gear 8 to rotate. At the same time, motion gear 8 is rotatably connected to guide groove 7 inside mounting box 5. Since mounting box 5 has a fan-shaped structure and guide groove 7 is designed with a matching arc trajectory, motion gear 8 can slide and rotate in guide groove 7 when bearing the torque of output gear 3, realizing the initial buffer function: when vibration or impact load occurs, motion gear 8 automatically slides slightly along the arc path of guide groove 7, absorbs energy through displacement and converts it into frictional heat, thereby dispersing and attenuating the transmission of vibration and preventing it from causing rigid impact or damage to the output end.

[0021] The center of the motion gear 8 passes through the motion shaft 13, which is rotatably connected to the motion gear 8. The two ends of the motion shaft 13 are fixedly connected to the main connecting rod 10 and the auxiliary connecting rod 12, respectively. Specifically, the main connecting rod 10 is rotatably connected to the mounting hole 9 on the side of the mounting box 5 away from the reducer 2, while the auxiliary connecting rod 12 is slidably connected to the safety ring 11 parallel to the main connecting rod 10. The safety ring 11 is rotatably set on the outside of the connection between the mounting box 5 and the connecting flange 6. When the motion gear 8 slides in the guide groove 7, its displacement force is transmitted to the motion shaft 13, driving the auxiliary connecting rod 12 to slide linearly on the safety ring 11, while simultaneously driving the main connecting rod 10 to rotate around the mounting hole 9. The angular displacement of the main connecting rod 10 allows the entire linkage system to be elastically adjusted, further absorbing the impact energy and converting it into mechanical displacement, avoiding the impact force from directly acting on the main connecting rod 10 or its connected output components. The linkage design forms a buffer layer through the linkage of the motion shaft 13, the auxiliary connecting rod 12, and the main connecting rod 10, so that the impact load is gradually attenuated.

[0022] Cylinder 16 is mounted on the top of main connecting rod 10 and outside of mounting box 5. A connecting shaft 17 is fixedly connected to the middle of the outer side of cylinder 16. The connecting shaft 17 is rotatably connected to the inside of fixed seat 15. Fixed seat 15 is fixedly set on the top of mounting box 5 near the main connecting rod 10. Cylinder 16 can rotate freely on fixed seat 15 via connecting shaft 17, adapting to the movement of main connecting rod 10 without constraint. Piston rod 18 is slidably connected inside cylinder 16. The lower end of piston rod 18 extends downward through the bottom of cylinder 16 and is hinged to the middle of the top of main connecting rod 10 via hinge seat 14. When main connecting rod 10 swings, piston rod 18 is pulled or pushed to slide linearly inside cylinder 16. Spring 19 is sleeved on the outside of piston rod 18. When piston rod 18 is displaced, spring 19 is compressed. The elastic restoring force of spring 19 then pushes piston rod 18 back to its original position, assisting in buffering and resetting the system. Control valve 20 is fixedly connected to the top of cylinder 16. Control valve 20 is connected through an external air supply device and can adjust airflow according to buffering requirements.

[0023] When the starter reduction mechanism outputs power, the output gear 3 transmits torque through the motion gear 8. The motion gear 8 initially slides inside the guide groove 7 to absorb the starting buffer. At the same time, the external gas drives the cylinder 16 through the control valve 20, pushing the piston rod 18 to slide inside the cylinder 16. The piston rod 18 drives the main connecting rod 10 to rotate through the hinge seat 14. The main connecting rod 10 drives the motion shaft 13 to rotate around the mounting hole 9, thereby adjusting the position of the motion gear 8 inside the guide groove 7, so that the motion gear 8 is aligned and meshes with the external equipment, achieving smooth power transmission.

[0024] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" or "linked" should be interpreted broadly. For example, it can refer to a fixed connection, a detachable connection, or an integral connection; it can refer to a mechanical connection or an electrical connection; it can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0025] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A starter deceleration mechanism with buffer protection function, comprising a motor (1), wherein a reducer (2) is fixedly connected to the output end of the motor (1), and an output gear (3) is fixedly connected to the output end of the reducer (2). Its features are: The reducer (2) is fixedly connected to a mounting box (5) on the side away from the motor (1). The mounting box (5) has a fan-shaped structure and an arc-shaped guide groove (7) on its side. The output gear (3) is rotatably connected inside the mounting box (5). The guide groove (7) is slidably and rotatably connected to a moving gear (8). The moving gear (8) meshes with the output gear (3) inside the mounting box (5).

2. A starter deceleration mechanism with buffer protection function according to claim 1, characterized in that: The reducer (2) is fixedly connected to a fixed flange (4) on the side away from the motor (1). The fixed flange (4) is located outside the output gear (3). The mounting box (5) is fixedly connected to a connecting flange (6) on the side close to the reducer (2). The mounting box (5) and the connecting flange (6) are connected to each other by bolts.

3. A starter deceleration mechanism with buffer protection function according to claim 1, characterized in that: The mounting box (5) has a mounting hole (9) on the side away from the reducer (2). The mounting hole (9) and the output gear (3) are located on the same axis. The main connecting rod (10) is rotatably connected inside the mounting hole (9).

4. A starter deceleration mechanism with buffer protection function according to claim 3, characterized in that: An eccentric ring (11) is rotatably connected to the outside of the connection between the mounting box (5) and the connecting flange (6), and a secondary connecting rod (12) is slidably connected to one side of the eccentric ring (11) and is distributed in parallel with the main connecting rod (10).

5. A starter deceleration mechanism with buffer protection function according to claim 4, characterized in that: A motion shaft (13) is fixedly connected between the end of the secondary connecting rod (12) away from the safety ring (11) and the end of the main connecting rod (10) away from the mounting hole (9). The motion shaft (13) passes through the center of the motion gear (8) and is rotatably connected to it.

6. A starter deceleration mechanism with buffer protection function according to claim 5, characterized in that: A hinge seat (14) is fixedly connected to the top center of the main connecting rod (10), and a fixing seat (15) is fixedly connected to the top of the mounting box (5) on the side close to the main connecting rod (10). A cylinder (16) is installed on the top of the main connecting rod (10) and the outside of the mounting box (5).

7. A starter deceleration mechanism with buffer protection function according to claim 6, characterized in that: A connecting shaft (17) is fixedly connected to the middle of the outer side of the cylinder (16). The connecting shaft (17) is rotatably connected to the inside of the fixed seat (15). A piston rod (18) is slidably connected inside the cylinder (16). The lower end of the piston rod (18) extends downward through the bottom of the cylinder (16) and is hinged to the hinge seat (14).

8. A starter deceleration mechanism with buffer protection function according to claim 7, characterized in that: A spring (19) is sleeved on the outside of the piston rod (18), and a control valve (20) is fixedly connected to the top of the cylinder (16). The control valve (20) is connected to an external air supply device.

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