An automobile starter based on a plug-in hybrid drive new energy vehicle

Abstract

The present invention discloses an automobile starter for a plug-in hybrid electric vehicle, which relates to the technical field of automobile starters. The starter comprises a motor mounted within a housing, wherein the output end of the motor is coaxially connected to a connecting shaft with a drive gear, and a drive mechanism is mounted within the housing; an adjustment mechanism is provided between the output end of the motor and the connecting shaft; the adjustment mechanism comprises a connecting sleeve and a plurality of springs. The present invention achieves controlled connection between the output end of the motor and the connecting shaft by providing the connecting sleeve and springs. The force between the drive gear and the flywheel ring gear of the automobile engine gradually increases as the springs extend until the flywheel ring gear can be driven to rotate. This design effectively prevents damage to the drive gear due to the instantaneous significant increase in load, thereby extending the service life of the drive gear and ensuring the reliability and stability of the entire starter system.

Description

Technical Field

[0001] The present invention relates to the technical field of automobile starters, and in particular to an automobile starter based on a plug-in hybrid drive new energy vehicle. Background Art

[0002] In plug-in hybrid electric vehicles, the engine requires external force from a starter to start. The starter draws current from the battery via a DC motor, driving a gear that generates mechanical motion. The transmission mechanism then meshes the drive gear with the flywheel ring gear to start the engine. Once the engine has successfully started, the starter's drive gear automatically disengages, severing its connection to the flywheel ring gear.

[0003] However, existing automobile starters based on plug-in hybrid drive new energy vehicles still have defects during use;

[0004] For example, Chinese patent publication number CN115163369A discloses an improved gear-driven automobile starter, comprising: a housing, a brush disposed at the bottom end of the housing, a field winding disposed above the brush, an armature interposed between the field winding and the brush, and a transmission case disposed at the top of the field winding. In the present invention, when the field winding is energized, a pinion fixedly connected to the armature via a connecting shaft rotates with the armature, and the pinion drives three large gears to rotate within a gear ring. At this time, a coaxial shaft rotates synchronously with the large gears, driving the transmission shaft to rotate. Because the diameter of the pinion is smaller than that of the large gear, the pinion needs to rotate several times to drive the large gear to rotate once. Therefore, the rotational speed of the coaxial shaft is lower than that of the armature, enabling the drive gear to rotate at a lower speed, thereby preventing damage to the drive gear and facilitating long-term use of the drive gear.

[0005] In the aforementioned automotive starter, planetary gears are used to achieve lower-speed rotation of the drive gear. While this facilitates the long-term use of the drive gear, the planetary gear structure itself is relatively complex. When the drive gear suddenly engages with the flywheel ring gear, the load on the planetary gear structure instantly increases significantly, leading to a significant increase in tooth surface contact stress and tooth root bending stress, which in turn affects the service life of the gear. Furthermore, the planetary gear system itself may have problems with uneven load distribution, and the sudden increase in load further exacerbates this imbalance. Some planetary gears may bear a load far greater than others, resulting in localized gear stress concentration and increased wear. This not only affects the transmission efficiency and reliability of the entire system, but also reduces transmission accuracy, ultimately shortening the service life of the starter. Therefore, the service life of existing automotive starters still needs to be improved. Summary of the Invention

[0006] In order to overcome the above technical problems, the purpose of the present invention is to provide an automobile starter based on a plug-in hybrid drive new energy vehicle, which is used to solve the problem mentioned in the above background technology that the internal gear structure of the existing automobile starter is damaged by the instantaneous increase in load, resulting in a short service life.

[0007] The purpose of the present invention can be achieved through the following technical solutions:

[0008] A car starter based on a plug-in hybrid drive new energy vehicle, including a motor installed in a housing, the output end of the motor being coaxially connected to a connecting shaft with a drive gear, and a driving mechanism installed in the housing; the output end of the driving mechanism is connected to the connecting shaft and is used to drive the connecting shaft to move along its axis; an adjustment mechanism is provided between the output end of the motor and the connecting shaft; the adjustment mechanism includes: a connecting sleeve and a plurality of springs; wherein, one end of the connecting sleeve is coaxially fixed to the output end of the motor, and the other end of the connecting sleeve is coaxially sleeved on the connecting shaft; one end of a plurality of the springs is connected to the connecting sleeve, and the other end of a plurality of the springs is connected to the connecting shaft; the spring is an arc-shaped structure with the axis of the connecting shaft as the center of the circle; when the spring loses its restriction, the spring is used to drive the connecting shaft to rotate around its axis.

[0009] Preferably, the adjustment mechanism also includes a plurality of clamping blocks and a second connecting block with a first sliding groove; each of the clamping blocks is fixed on one end of the spring away from the connecting sleeve; a plurality of the second connecting blocks are fixed on the connecting shaft, and the clamping blocks are adapted to the first sliding groove; when the driving mechanism drives the connecting shaft to move, the clamping block is allowed to be inserted into the first sliding groove.

[0010] Preferably, a plurality of second sliding grooves are provided on the connecting sleeve around its circumference, and the second connecting block is slidably connected in the second sliding grooves.

[0011] Preferably, the adjustment mechanism further includes a control mechanism; the control mechanism is used to control the initial elastic force of the spring.

[0012] Preferably, the control mechanism includes a linkage mechanism, multiple sleeves, a sliding shaft and a first airbag; multiple sleeves are fixed to the connecting sleeve, and each sliding shaft is inserted into the sleeve; the sleeve and the sliding shaft are both arc-shaped structures with the axis of the connecting shaft as the center of the circle; the first airbag is arranged in the sleeve, and one end of the sliding shaft is in contact with the first airbag, and the other end of the sliding shaft is connected to the block; the first airbag is an elastic structure that allows it to be extended and retracted along the axis of the sleeve; the linkage mechanism is arranged in the connecting sleeve, and is used to control the internal air pressure of the first airbag to control the extension and retraction length of the first airbag.

[0013] Preferably, the linkage mechanism includes a mounting sleeve, a second airbag, a connecting tube and a retaining ring; the mounting sleeve is coaxially fixed to the connecting sleeve, the second airbag is fixed to the mounting sleeve, the first airbag and the second airbag are connected through the connecting tube, and the output end of the driving mechanism is connected to the retaining ring; when the driving mechanism drives the connecting shaft to move, the retaining ring is allowed to squeeze the second airbag to change the internal air pressure of the first airbag.

[0014] Preferably, the linkage mechanism also includes a baffle and multiple rollers; the baffle is fixed to the second airbag, and the multiple rollers are rotatably connected to the baffle; when the baffle ring approaches the second airbag, the baffle ring first contacts the rollers to reduce the friction between the baffle ring and the baffle.

[0015] Preferably, the driving mechanism includes a bearing, a sleeve, a driving member, a rotating rod and a first connecting block; the bearing sleeve is arranged on the connecting shaft, the inner ring of the bearing is fixed on the connecting shaft, and the outer ring of the bearing is connected to the sleeve; the first connecting block is fixed on the sleeve, the driving member is installed on the housing, the rotating rod is rotatably connected to the housing through a pin shaft, and the two ends of the rotating rod are respectively connected to the output end of the driving member and the first connecting block; the driving member is used to drive the sleeve to move along the axis of the connecting shaft through the rotating rod; a third slide groove is provided at one end of the rotating rod, and a fourth slide groove is provided at the output end of the driving member, and the third slide groove and the fourth slide groove provide motion compensation for the rotation of the rotating rod, allowing the sleeve to be driven to move along the axis of the connecting shaft; the retaining ring is fixed on the sleeve.

[0016] Preferably, a pressure sensor is installed on the baffle ring and is used to detect the pressure between the baffle ring and the baffle.

[0017] Preferably, each tooth of the driving gear is provided with a chamfer; and the thickness of the driving gear is greater than the thickness of the engine flywheel ring gear.

[0018] Beneficial effects of the present invention:

[0019] By providing a connecting sleeve and a spring, the connection between the motor output end and the connecting shaft is controlled. The force between the drive gear and the flywheel ring gear of the automobile engine gradually increases as the spring extends until the flywheel ring gear of the automobile engine can be driven to rotate. This design can effectively prevent the drive gear from being damaged by the sudden increase in load, thereby extending the service life of the drive gear and ensuring the reliability and stability of the entire starter system.

[0020] By setting up an adjustment mechanism, the initial elastic force of the spring can be flexibly adjusted according to different working conditions, thereby ensuring the service life of the drive gear structure while optimizing the response speed of the starter, achieving a balance between the two;

[0021] By installing a pressure sensor and a drive mechanism, and precisely controlling the actuator's expansion and contraction, the position of connected components can be adjusted, thereby precisely controlling the spring's initial force. This closed-loop control method effectively addresses the impact of temperature fluctuations on the airbag's pressure, ensuring that the spring's initial force remains within a set, reasonable range, achieving precise control. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The present invention will be further described below with reference to the accompanying drawings.

[0023] Figure 1 This is a schematic diagram of the overall first-view three-dimensional structure of the present invention;

[0024] Figure 2 This is a schematic diagram of the overall second-viewing perspective three-dimensional structure of the present invention;

[0025] Figure 3 This is a schematic diagram of the three-dimensional enlarged structure of the driving member of the present invention;

[0026] Figure 4 This is a schematic diagram of the three-dimensional enlarged structure of the rotating rod of the present invention;

[0027] Figure 5 It is a schematic diagram of a three-dimensional enlarged structure of the adjustment mechanism of the present invention;

[0028] Figure 6 It is a partially cutaway, three-dimensional, enlarged structural diagram of the regulating mechanism of the present invention;

[0029] Figure 7 This invention Figure 6 Schematic diagram of the enlarged structure of area A in the middle;

[0030] Figure 8 This is a schematic diagram of the main cutaway and enlarged structure of the adjustment mechanism of the present invention;

[0031] Figure 9 This is a schematic diagram of a three-dimensional enlarged exploded structure of the control mechanism of the present invention;

[0032] Figure 10 This is a schematic diagram of the three-dimensional enlarged structure of the connecting shaft of the present invention;

[0033] Figure 11 It is a schematic diagram of the three-dimensional enlarged structure of the connecting sleeve of the present invention;

[0034] Figure 12 This is a partially cutaway, three-dimensional, enlarged structural diagram of the control mechanism of the present invention;

[0035] Figure 13 This invention Figure 12 Schematic diagram of the enlarged structure of area B in the middle.

[0036] In the figure: 1. Housing; 2. Motor; 3. Connecting shaft; 4. Driving gear; 5. Driving mechanism; 51. Bearing; 52. Sliding sleeve; 53. Driving member; 54. Rotating rod; 55. First connecting block; 6. Adjusting mechanism; 61. Connecting sleeve; 62. Spring; 63. Block; 64. Second connecting block; 65. First slide groove; 66. Second slide groove; 67. Control mechanism; 671. Sleeve; 672. Sliding shaft; 673. First airbag; 674. Linkage mechanism; 6741. Mounting sleeve; 6742. Second airbag; 6743. Connecting pipe; 6744. Retaining ring; 6745. Baffle; 6746. Roller. DETAILED DESCRIPTION

[0037] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. 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 making any creative efforts shall fall within the scope of protection of the present invention.

[0038] Example 1: Please refer to Figures 1-13 , an automobile starter based on plug-in hybrid drive new energy vehicles, such as Figure 1-Figure 2 and Figure 6-Figure 7 As shown, it includes a motor 2 installed in a housing 1, and the output end of the motor 2 is coaxially connected to a connecting shaft 3 with a driving gear 4; a driving mechanism 5 is installed in the housing 1; the output end of the driving mechanism 5 is connected to the connecting shaft 3; and is used to drive the connecting shaft 3 to move along its axis; each tooth of the driving gear 4 is provided with a chamfer; the thickness of the driving gear 4 is greater than the thickness of the engine flywheel ring gear, and by setting the chamfer, when the driving mechanism 5 drives the driving gear 4 to engage with the automobile engine flywheel ring gear, it can provide a certain guiding effect, thereby effectively avoiding the driving gear 4 and the flywheel ring gear from being engaged. Due to serious misalignment, it cannot engage smoothly; an adjustment mechanism 6 is provided between the output end of the motor 2 and the connecting shaft 3; the adjustment mechanism 6 includes: a connecting sleeve 61 and a plurality of springs 62; wherein, one end of the connecting sleeve 61 is coaxially fixed to the output end of the motor 2, and the other end of the connecting sleeve 61 is coaxially sleeved on the connecting shaft 3; one end of the plurality of springs 62 is connected to the connecting sleeve 61, and the other end of the plurality of springs 62 is connected to the connecting shaft 3; the spring 62 is an arc structure with the axis of the connecting shaft 3 as the center of the circle; when the spring 62 loses its restriction, the spring 62 is used to drive the connecting shaft 3 to rotate around its axis.

[0039] It should be noted that during the starting process of the automobile starter, the drive mechanism 5 first drives the drive gear 4 on the connecting shaft 3 to move axially along the connecting shaft 3 until the drive gear 4 precisely meshes with the automobile engine flywheel ring gear. Subsequently, the motor 2 is started, and the torque of the motor 2 is transmitted to the drive gear 4 through the connecting shaft 3. The drive gear 4 then drives the automobile engine flywheel ring gear to rotate, thereby starting the engine. After the engine is successfully started, the drive mechanism 5 comes into play again, driving the drive gear 4 to move in the opposite direction along the axial direction of the connecting shaft 3, causing it to smoothly separate from the automobile engine flywheel ring gear, completing the entire starting process.

[0040] When the motor 2 drives the connecting shaft 3 to rotate, the power transmission process is as follows: the output end of the motor 2 first drives the connecting sleeve 61 to rotate. Since the connecting sleeve 61 is connected to the spring 62, the rotation of the connecting sleeve 61 causes the spring 62 to move. At this time, the drive gear 4 is in meshing with the flywheel ring gear of the automobile engine. As the connecting sleeve 61 continues to rotate, the spring 62 is gradually stretched to a state of sufficient elasticity. Under the elastic force of the spring 62, the drive gear 4 on the connecting shaft 3 begins to rotate. During this process, the force between the drive gear 4 and the flywheel ring gear of the automobile engine will gradually increase as the spring 62 stretches. This design can effectively prevent the drive gear 4 from being damaged due to the instantaneous increase in load, thereby extending the service life of the drive gear 4 and ensuring the reliability and stability of the entire starter system.

[0041] See also Figure 2 and Figure 6-Figure 8 The adjusting mechanism 6 also includes a plurality of clamping blocks 63 and a second connecting block 64 with a first sliding groove 65; each clamping block 63 is fixed on an end of a spring 62 away from the connecting sleeve 61; a plurality of second connecting blocks 64 are fixed on the connecting shaft 3, and the clamping blocks 63 are adapted to the first sliding groove 65; when the driving mechanism 5 drives the connecting shaft 3 to move, the clamping blocks 63 are allowed to be inserted into the first sliding groove 65; a plurality of second sliding grooves 66 are opened on the connecting sleeve 61 around its circumference, and the second connecting blocks 64 are slidably connected to the second sliding groove 66.

[0042] It should be noted that the coordinated use of the clamping block 63 and the second connecting block 64 plays a key role. When the drive mechanism 5 drives the connecting shaft 3 to move, the mutual cooperation of the clamping block 63 and the second connecting block 64 effectively prevents the spring 62 from deflecting, ensuring that the spring 62 always expands and contracts along its axial direction. This prevents the spring 62 from losing its elastic force due to forces in other directions, thereby ensuring the stability and reliability of the entire system.

[0043] To speed up the starter's startup, when the drive mechanism 5 drives the drive gear 4 on the connecting shaft 3 to engage with the flywheel ring gear of the automobile engine, the second connecting block 64 moves accordingly, causing the clamping block 63 to be inserted into the first slide 65 for engagement. At this point, the drive gear 4 and the flywheel ring gear of the automobile engine are already in meshing state. Subsequently, the motor 2 begins to drive the connecting shaft 3 to rotate. The motor 2 first drives the connecting sleeve 61 to rotate, and the connecting sleeve 61 then drives one end of the spring 62 to move. The connecting shaft 3, however, temporarily remains stationary due to inertia and the meshing state of the drive gear 4.

[0044] As the spring 62 gradually extends, the second connecting block 64 moves to the end of the second slide groove 66 and contacts the connecting sleeve 61. At this time, the torsional force on the connecting shaft 3 increases slowly from the elastic force generated by the extension of the spring 62, and then rapidly increases after the second connecting block 64 engages with the connecting sleeve 61, until the torsional force is sufficient to drive the connecting shaft 3 to rotate, thereby achieving the purpose of rapid start-up;

[0045] During this process, spring 62 slowly extends, storing a certain amount of torque. This torque is then rapidly increased and transmitted to connecting shaft 3 through the interference between second connecting block 64 and connecting sleeve 61. This design not only prevents damage to drive gear 4 due to transient excessive loads, but also significantly improves the efficiency of drive gear 4 in rotating the flywheel ring gear of the vehicle engine, thereby accelerating the starting speed of the entire starter.

[0046] See also Figure 6-Figure 9 and Figure 12-13 , the adjustment mechanism 6 also includes a control mechanism 67; the control mechanism 67 is used to control the initial elastic force of the spring 62; the control mechanism 67 includes a linkage mechanism 674, multiple sleeves 671, a sliding shaft 672 and a first airbag 673; multiple sleeves 671 are fixed to the connecting sleeve 61, and each sliding shaft 672 is inserted into the sleeve 671; the sleeve 671 and the sliding shaft 672 are both arc-shaped structures with the axis of the connecting shaft 3 as the center of the circle; the first airbag 673 is arranged in the sleeve 671, and one end of the sliding shaft 672 is in contact with the first airbag 673, and the other end of the sliding shaft 672 is connected to the block 63; the first airbag 673 is an elastic structure that allows it to be extended and retracted along the axis of the sleeve 671; the linkage mechanism 674 is arranged in the connecting sleeve 61, and is used to control the internal air pressure of the first airbag 673 to control the telescopic length of the first airbag 673.

[0047] It should be noted that by adjusting the initial elastic force of the spring 62 through the control mechanism 67, it is possible to achieve a balance between the service life of the drive gear 4 structure and the response speed of the starter. The greater the initial elastic force of the spring 62, the faster the response speed of the drive gear 4.

[0048] When the drive mechanism 5 drives the connecting shaft 3 to move, it also drives the linkage mechanism 674 to move. The linkage mechanism 674 inflates the first airbag 673, causing the first airbag 673 to stretch. The stretching of the first airbag 673 pushes the sliding shaft 672 to move and stretch on the sleeve 671, which in turn stretches the spring 62, pushing the second connecting block 64 toward the end of the second slide groove 66.

[0049] When motor 2 drives connecting shaft 3 to rotate, the torsional force applied to connecting shaft 3 increases in addition to the elastic force of spring 62. As spring 62 extends, when its elastic force reaches a certain level or when second connecting block 64 contacts the end of second chute 66, the torque sufficient to drive drive gear 4 is reached. By controlling the different extension states of first airbag 673, the initial elastic force of spring 62 can be adjusted, thereby controlling the starter's response speed.

[0050] Example 2: This example differs from Example 1 in that: Figure 6-Figure 9 The linkage mechanism 674 includes a mounting sleeve 6741, a second airbag 6742, a connecting tube 6743 and a retaining ring 6744; it can be understood that the second airbag 6742 is an elastic structure and can automatically recover when it loses its restriction; the mounting sleeve 6741 is coaxially fixed to the connecting sleeve 61, and the second airbag 6742 is fixed to the mounting sleeve 6741. The first airbag 673 and the second airbag 6742 are connected through the connecting tube 6743, and the output end of the driving mechanism 5 is connected to the retaining ring 6744; when the driving mechanism 5 drives the connecting shaft 3 to move, it is allowed to drive the retaining ring 6744 to squeeze the second airbag 6742 to change the internal air pressure of the first airbag 673.

[0051] It should be noted that when the driving mechanism 5 drives the connecting shaft 3 to move, it will drive the retaining ring 6744 to move axially. The retaining ring 6744 approaches the second airbag 6742 and gradually applies pressure to it, so that the second airbag 6742 is squeezed and deformed. At this time, the gas in the second airbag 6742 is introduced into the first airbag 673 through the connecting tube 6743 under the action of pressure. As the gas continues to flow in, the air pressure in the first airbag 673 gradually increases, causing it to be stretched under force. The elongation of the first airbag 673 will further push the components connected to it, thereby adjusting the initial elastic force of the spring 62. Through this ingenious pneumatic control method, the initial elastic force of the spring 62 can be flexibly adjusted according to different working conditions, thereby ensuring the service life of the drive gear 4 structure while optimizing the response speed of the starter, achieving a balance between the two.

[0052] See also Figure 12-13The linkage mechanism 674 also includes a baffle 6745 and a plurality of rollers 6746; the baffle 6745 is fixed to the second airbag 6742, and the plurality of rollers 6746 are rotatably connected to the baffle 6745; when the baffle ring 6744 approaches the second airbag 6742, the baffle ring 6744 first contacts the rollers 6746 to reduce the friction between the baffle ring 6744 and the baffle 6745.

[0053] It should be noted that when the connecting sleeve 61 rotates, it also drives the second airbag 6742 to rotate, while the retaining ring 6744 is in a non-rotating state. Therefore, when the retaining ring 6744 approaches the second airbag 6742 and squeezes it, relative motion occurs between the retaining ring 6744 and the second airbag 6742, generating friction. If this friction is too great, it will not only increase energy loss but may also cause wear on the surfaces of the retaining ring 6744 and the second airbag 6742, affecting their service life and system reliability.

[0054] To effectively reduce this friction, a baffle 6745 and roller 6746 are specifically designed. Baffle 6745 is mounted on the corresponding position of retaining ring 6744, while roller 6746 contacts second airbag 6742. When retaining ring 6744 approaches and squeezes second airbag 6742, it collides with roller 6746. Because roller 6746 can roll on baffle 6745, this rolling contact transforms sliding friction into rolling friction, which has a much lower friction force than sliding friction. This significantly reduces the friction between retaining ring 6744 and second airbag 6742, thereby reducing energy loss, minimizing component wear, and effectively extending the system's service life, ensuring efficient and stable operation of the entire starter system.

[0055] See also Figure 1-Figure 5It is understood that the present application does not limit the specific scheme and implementation method of the driving mechanism 5. The following only provides a feasible technical solution; the driving mechanism 5 includes a bearing 51, a sleeve 52, a driving member 53, a rotating rod 54 and a first connecting block 55; it is understood that the driving member 53 is a prior art, such as an electric cylinder, which can accurately control the extension and contraction degree of the output end of the driving member 53; the bearing 51 is sleeved on the connecting shaft 3, the inner ring of the bearing 51 is fixed on the connecting shaft 3, and the outer ring of the bearing 51 is connected to the sleeve 52; the first connecting block 55 is fixed on the sleeve 5 2. The driving member 53 is installed on the housing 1, and the rotating rod 54 is rotatably connected to the housing 1 through a pin shaft. The two ends of the rotating rod 54 are respectively connected to the output end of the driving member 53 and the first connecting block 55; the driving member 53 is used to drive the sleeve 52 to move along the axis of the connecting shaft 3 through the rotating rod 54; a third sliding groove is provided at one end of the rotating rod 54, and a fourth sliding groove is provided at the output end of the driving member 53. The third sliding groove and the fourth sliding groove provide motion compensation for the rotation of the rotating rod 54, allowing the sliding sleeve 52 to move along the axis of the connecting shaft 3; the retaining ring 6744 is fixed to the sliding sleeve 52.

[0056] It should be noted that the driving member 53 in the driving mechanism 5 plays a core driving role. When the driving member 53 is working, it first drives the rotating rod 54 to rotate. The rotation of the rotating rod 54 further drives the first connecting block 55 to move along the predetermined trajectory. In this process, the third slide groove and the fourth slide groove play a key role in motion compensation, ensuring that the movement of the first connecting block 55 is smooth and accurate. The movement of the first connecting block 55 further drives the sleeve 52 to move along its axial direction. The movement of the sleeve 52 is through its connection with the connecting shaft 3, pushing the connecting shaft 3 to move along its axial direction. This continuous action enables the drive gear 4 to precisely engage with the flywheel ring gear of the automobile engine;

[0057] After the drive gear 4 and the flywheel ring gear are fully engaged, the drive member 53 continues to operate to maintain the meshing state of the drive gear 4 and the flywheel ring gear, ensuring stable power transmission between the two. At the same time, the design of the bearing 51 and the sleeve 52 cleverly ensures that the motor 2 is not affected when the drive connecting shaft 3 rotates;

[0058] When the sliding sleeve 52 is driven to move, the retaining ring 6744 is driven to move, so that the retaining ring 6744 squeezes the second airbag 6742 to control the expansion degree of the first airbag 673 .

[0059] See also Figure 6-Figure 9 A pressure sensor is installed on the retaining ring 6744 and is used to detect the pressure between the retaining ring 6744 and the baffle 6745.

[0060] It should be noted that the pressure sensor belongs to the prior art, and its specific structure and working principle are not shown in the figure, and there is no need to describe it in detail here. Figure 13 The air inside the airbag 6742 (shown in the figure) and the second airbag 6742 is affected by the outside temperature, causing it to expand or contract to varying degrees, which in turn affects the air pressure inside the airbag. To accurately monitor air pressure changes, the system uses a pressure sensor to detect the pressure between the retaining ring 6744 and the baffle 6745. Since the pressure between the retaining ring 6744 and the baffle 6745 is closely related to the air pressure inside the second airbag 6742, and the second airbag 6742 is connected to the first airbag 673, detecting the pressure between the retaining ring 6744 and the baffle 6745 can indirectly monitor the air pressure in the first airbag 673.

[0061] Based on the data detected by the pressure sensor, the air pressure changes in the airbag can be fed back in real time. Subsequently, the driving member 53 (such as Figure 1 By precisely controlling the extension and retraction of the driver 53, the position of connected components can be further adjusted, thereby precisely controlling the initial spring force of spring 62. This closed-loop control method effectively addresses the impact of ambient temperature fluctuations on airbag pressure, ensuring that the initial spring force of spring 62 remains within a set and reasonable range. This in turn ensures the stability and reliability of the entire starter, improving overall adaptability and operating efficiency.

[0062] In the description of the present invention, it should be understood that the terms "upper", "lower", "left", "right" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction and a specific direction structure and operation, and therefore, cannot be understood as limiting the present invention. In addition, "first" and "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0063] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0064] The above is a detailed description of an embodiment of the present invention. However, the content described is only a preferred embodiment of the present invention and should not be considered to limit the scope of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the patent coverage of the present invention.

Claims

1. A car starter based on a plug-in hybrid drive new energy vehicle, comprising a motor (2) installed in a housing (1), wherein the output end of the motor (2) is coaxially connected to a connecting shaft (3) with a driving gear (4), and a driving mechanism (5) is installed in the housing (1); the output end of the driving mechanism (5) is connected to the connecting shaft (3) and is used to drive the connecting shaft (3) to move along its axis; and characterized in that: An adjustment mechanism (6) is provided between the output end of the motor (2) and the connecting shaft (3); the adjustment mechanism (6) comprises: A connecting sleeve (61), one end of the connecting sleeve (61) is coaxially fixed to the output end of the motor (2), and the other end of the connecting sleeve (61) is coaxially sleeved on the connecting shaft (3); and a plurality of springs (62), one end of each of the plurality of springs (62) being connected to the connecting sleeve (61), and the other end of each of the plurality of springs (62) being connected to the connecting shaft (3); the spring (62) being an arc-shaped structure with the axis of the connecting shaft (3) as the center of the circle; The adjusting mechanism (6) further comprises a plurality of clamping blocks (63) and a second connecting block (64) with a first sliding groove (65); each of the clamping blocks (63) is fixed to an end of one of the springs (62) away from the connecting sleeve (61); a plurality of the second connecting blocks (64) are fixed to the connecting shaft (3), and the clamping blocks (63) are adapted to the first sliding groove (65); when the driving mechanism (5) drives the connecting shaft (3) to move, the clamping blocks (63) are allowed to be inserted into the first sliding groove (65); The connecting sleeve (61) is provided with a plurality of second sliding grooves (66) around its circumference, and the second connecting block (64) is slidably connected in the second sliding grooves (66); The regulating mechanism (6) further comprises a control mechanism (67); the control mechanism (67) is used to control the initial elastic force of the spring (62).

2. The automobile starter for a plug-in hybrid new energy vehicle according to claim 1, characterized in that: The control mechanism (67) includes a linkage mechanism (674), a plurality of sleeves (671), a sliding shaft (672) and a first airbag (673); the plurality of sleeves (671) are fixed to the connecting sleeve (61), and each sliding shaft (672) is plugged into the sleeve (671); the sleeve (671) and the sliding shaft (672) are both arc-shaped structures with the axis of the connecting shaft (3) as the center; the first airbag (673) is arranged in the sleeve (671), and one end of the sliding shaft (672) is in contact with the first airbag (673), and the other end of the sliding shaft (672) is connected to the block (63); the first airbag (673) is an elastic structure that allows it to be extended and retracted along the axis of the sleeve (671); the linkage mechanism (674) is arranged in the connecting sleeve (61) and is used to control the internal air pressure of the first airbag (673) to control the extension and retraction length of the first airbag (673).

3. The automobile starter for a plug-in hybrid new energy vehicle according to claim 2, characterized in that: The linkage mechanism (674) comprises a mounting sleeve (6741), a second airbag (6742), a connecting pipe (6743) and a retaining ring (6744); the mounting sleeve (6741) is coaxially fixed to the connecting sleeve (61), the second airbag (6742) is fixed to the mounting sleeve (6741), the first airbag (673) and the second airbag (6742) are connected via the connecting pipe (6743), and the output end of the driving mechanism (5) is connected to the retaining ring (6744); when the driving mechanism (5) drives the connecting shaft (3) to move, the retaining ring (6744) is allowed to squeeze the second airbag (6742) to change the internal air pressure of the first airbag (673).

4. The automobile starter for a plug-in hybrid new energy vehicle according to claim 3, characterized in that: The linkage mechanism (674) further includes a baffle (6745) and a plurality of rollers (6746); the baffle (6745) is fixed to the second airbag (6742), and the plurality of rollers (6746) are rotatably connected to the baffle (6745); when the baffle ring (6744) and the second airbag (6742) approach each other, the baffle ring (6744) first contacts the rollers (6746) to reduce the friction between the baffle ring (6744) and the baffle (6745).

5. The automobile starter for a plug-in hybrid new energy vehicle according to claim 3, characterized in that: The driving mechanism (5) includes a bearing (51), a sleeve (52), a driving member (53), a rotating rod (54) and a first connecting block (55); the bearing (51) is sleeved on the connecting shaft (3), the inner ring of the bearing (51) is fixed on the connecting shaft (3), and the outer ring of the bearing (51) is connected to the sleeve (52); the first connecting block (55) is fixed on the sleeve (52), the driving member (53) is installed on the housing (1), the rotating rod (54) is rotatably connected to the housing (1) through a pin shaft, and the rotating rod (54) The two ends are respectively connected to the output end of the driving member (53) and the first connecting block (55); the driving member (53) is used to drive the sliding sleeve (52) to move along the axis of the connecting shaft (3) through the rotating rod (54); a third sliding groove is provided at one end of the rotating rod (54), and a fourth sliding groove is provided at the output end of the driving member (53); the third sliding groove and the fourth sliding groove provide motion compensation for the rotation of the rotating rod (54), allowing the sliding sleeve (52) to move along the axis of the connecting shaft (3); the retaining ring (6744) is fixed to the sliding sleeve (52).

6. The automobile starter for a plug-in hybrid new energy vehicle according to claim 5, characterized in that: A pressure sensor is installed on the retaining ring (6744) and is used to detect the pressure between the retaining ring (6744) and the baffle (6745).

7. The automobile starter for a plug-in hybrid new energy vehicle according to claim 1, characterized in that: Each tooth of the driving gear (4) is provided with a chamfer; the thickness of the driving gear (4) is greater than the thickness of the engine flywheel ring gear.

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