Shift fork anti-derailment starter

Abstract

This application discloses a starter motor for preventing shift fork deviation. The starter motor includes a transmission mechanism, a control mechanism, and a DC motor. The transmission mechanism includes a shift fork assembly, which includes a first connecting part, a second connecting part, and a connecting rod. It also includes a first rolling element, which is disposed at one end of the first connecting part. The first rolling element is shaped as a spherical metal. The connecting rod forms a first spherical groove at one end near the first connecting part. The first rolling element can deflect to a certain extent within the first spherical groove, thereby reducing the transmission of vibration in the first connecting part and achieving a vibration-proof effect. It also drives the first connecting part to move axially along the first moving shaft, preventing the shift fork assembly from deviating and affecting the transmission effect, thereby improving the stability and safety of the shift fork assembly during transmission.

Description

Technical Field

[0001] This utility model relates to the field of shift fork technology, and in particular to a starter motor for preventing shift fork deviation. Background Technology

[0002] A starter motor is a device that converts electrical energy into mechanical energy. It is usually installed near the flywheel of the engine of mechanical equipment to start the engine and make the stationary engine start running.

[0003] The starter motor consists of a DC motor, an electromagnetic switch, and a transmission mechanism. One end of the shift fork in the transmission mechanism is connected to the movable iron core of the electromagnetic switch, and the other end is connected to a transmission gear connected to the DC motor. When energized, the movable iron core begins to move under the attraction of the coil wrapped around its surface, moving the shift fork along with it. Simultaneously, the other end of the shift fork pushes the transmission gear to engage with the engine flywheel. Subsequently, the circuit in the DC motor is connected, causing the transmission gear and the engine flywheel to rotate rapidly, ultimately starting the engine. When the power is cut off, the movable iron core returns to its original position under the force of the return spring. At this time, the shift fork also returns to its original position, and the transmission gear is pulled back.

[0004] During the starter motor's operation, the elasticity of the return spring in the electromagnetic switch allows the movable iron core to automatically reset the shift fork along the axial direction of the return spring. However, the return spring is typically made of metal. When external force is applied to the return spring for an extended period, it may cause permanent deformation, making the return action less sensitive. In this case, the shift fork may deviate from the axial direction of the return spring and further affect the transmission function of the starter motor's drive mechanism. Utility Model Content

[0005] One advantage of this invention is that the starter motor for preventing shift fork deviation includes a transmission mechanism, which includes a shift fork assembly. The shift fork assembly includes a first connecting part and a connecting rod. By providing a first rolling element in the first connecting part, and forming a first spherical groove at one end of the connecting rod near the first connecting part, the first rolling element can deflect to a certain extent in the first spherical groove, thereby reducing the transmission of vibration in the first connecting part and achieving a vibration-proof effect. Furthermore, it drives the first connecting part to move axially along the first moving shaft, preventing the shift fork assembly from being affected by deviation and thus improving the stability and safety of the shift fork assembly during transmission.

[0006] Another advantage of this invention is that the shift fork assembly further includes a second connecting part. By providing a second rolling element in the second connecting part, the connecting rod forms a second spherical groove at one end near the second connecting part. The second rolling element can deflect to a certain extent in the second spherical groove, thereby reducing the transmission of vibration in the second connecting part and achieving a vibration-free effect. It also drives the second connecting part to move axially along the second moving shaft, preventing the shift fork assembly from being affected by deviation and further improving the stability and safety of the shift fork assembly during transmission.

[0007] To achieve at least one of the advantages of this utility model, this utility model provides a starter motor for preventing shifting fork deviation. The starter motor for preventing shifting fork deviation includes a transmission mechanism, the transmission mechanism includes a shift fork assembly, and the shift fork assembly includes:

[0008] A first connecting part, a second connecting part, and a connecting rod, wherein the first connecting part and the second connecting part are respectively installed at both ends of the connecting rod;

[0009] A first rolling element is disposed at one end of the first connecting portion. The first rolling element is implemented as a spherical metal. The connecting rod forms a first spherical groove at one end near the first connecting portion. The first rolling element is capable of deflecting to a certain extent in the first spherical groove.

[0010] According to one embodiment of the present invention, the shift fork assembly further includes a second rolling element, which is disposed at one end of the second connecting portion. The second rolling element is implemented as a spherical metal. Correspondingly, the connecting rod forms a second spherical groove near the second connecting portion, and the second rolling element deflects to a certain extent in the second spherical groove.

[0011] According to one embodiment of the present invention, the starter motor for the shift fork anti-deviation also includes a control mechanism and a DC motor. The control mechanism and the DC motor transmit torque to the engine flywheel through the transmission mechanism under electromagnetic action.

[0012] According to one embodiment of the present invention, the first connecting part is pivotally connected to the control mechanism, and the second connecting part is pivotally connected to the DC motor.

[0013] According to one embodiment of the present invention, the transmission mechanism further includes a first movable shaft, and the first connecting portion is pivotally connected to the first movable shaft.

[0014] According to one embodiment of the present invention, the transmission mechanism further includes a second movable shaft and a transmission gear. The transmission gear is rotatably and movablely mounted on the second movable shaft, and the transmission gear is driven by the second movable shaft to move in a direction away from or close to the engine flywheel.

[0015] According to one embodiment of the present invention, the control mechanism is implemented as a solenoid valve. The control mechanism includes a movable component, which is implemented as a cylindrical iron core and is rotatably and coaxially mounted on the first moving shaft. The surface of the movable component is uniformly wrapped with a coil.

[0016] According to one embodiment of the present invention, the control mechanism includes a return member, which is implemented as a spring and is connected to one end of the movable member.

[0017] According to one embodiment of the present invention, the DC motor includes an armature, which is rotatably mounted on the second moving shaft at one end away from the transmission gear, and the armature is wrapped with a permanent magnet or a coil on its outer side.

[0018] According to one embodiment of the present invention, a connecting hole is provided on the connecting rod, and the connecting hole is rotatably mounted on a fixing pin. Attached Figure Description

[0019] Figure 1 A perspective view of the shift fork assembly of the starter motor with the shift fork anti-deviation mechanism of the present invention is shown.

[0020] Figure 2 The diagram shows a front view of the starter motor with the shift fork anti-deviation mechanism described in this invention.

[0021] Figure 3 An exploded view of one embodiment of the starter motor with the shift fork anti-deviation mechanism described in this utility model is shown.

[0022] Figure 4 A cross-sectional view of an embodiment of the starter motor with the shift fork anti-deviation described in this utility model is shown.

[0023] Figure 5 An exploded view of another embodiment of the starter motor with the shift fork anti-deviation described in this utility model is shown.

[0024] Figure 6 A cross-sectional view of another embodiment of the starter motor with the shift fork anti-deviation described in this utility model is shown. Detailed Implementation

[0025] The following description is intended to disclose the present invention so that those skilled in the art can implement it. The preferred embodiments described below are merely examples, and other obvious variations will occur to those skilled in the art. The basic principles of the present invention defined in the following description can be applied to other embodiments, modifications, improvements, equivalents, and other technical solutions that do not depart from the spirit and scope of the present invention.

[0026] Those skilled in the art should understand that, in the disclosure of this utility model, the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the above terms should not be construed as limitations on this utility model.

[0027] It is understood that the term "a" should be understood as "at least one" or "one or more," meaning that in one embodiment, the number of an element can be one, while in another embodiment, the number of the element can be multiple. The term "a" should not be construed as a limitation on the quantity. The starter motor for the shift fork anti-drift is mounted near the engine flywheel in the mechanical device, enabling the engine to start from a standstill.

[0028] The starter motor for the shift fork anti-deviation includes a transmission mechanism 10, a control mechanism 20, and a DC motor 30. The control mechanism 20 and the DC motor 30 are tractably connected through the transmission mechanism 10. After being powered on, the control mechanism 20 and the DC motor 30 transmit torque to the engine flywheel through the transmission mechanism 10 under electromagnetic action, thereby starting the engine.

[0029] Specifically, the transmission mechanism 10 includes a shift fork assembly 11, which is connected to the control mechanism 20 and the DC motor 30. The shift fork assembly 11 defines a first connecting portion 111, a second connecting portion 112, and a connecting rod 113. A connecting hole 11301 is provided on the connecting rod 113, and the shift fork assembly 11 is rotatably mounted on a fixing pin through the connecting hole 11301, so that the shift fork assembly 11 can swing along the fixing pin.

[0030] The first connecting part 111 and the second connecting part 112 are respectively installed at both ends of the connecting rod 113. The first connecting part 111 is pivotally connected to the control mechanism 20, and the second connecting part 112 is pivotally connected to the DC motor 30. Thus, when energized, the control mechanism 20 drives the first connecting part 111 to move, thereby causing the shift fork assembly 11 to swing along the fixing pin, further causing the second connecting part 112 to move in the opposite direction to the movement of the first connecting part 111, thereby enabling the shift fork anti-deviation starter to move closer to and further away from the engine flywheel.

[0031] Furthermore, the transmission mechanism 10 also includes a first moving shaft 12, and the first connecting portion 111 of the shift fork assembly 11 is pivotally connected to the first moving shaft 12. The control mechanism 20 is implemented as a solenoid valve, and the control mechanism 20 includes a movable member 21 and a return member 22. The first moving shaft 12 is movably mounted in the control mechanism 20.

[0032] The movable element 21 is implemented as a cylindrical iron core and is rotatably and coaxially mounted on the first moving shaft 12. The surface of the movable element 21 is uniformly wrapped with a coil, which generates a magnetic field when energized, thereby attracting the movable element 21 to move along the first moving shaft 12 and along its axial direction.

[0033] The return member 22 is implemented as a spring and is connected to one end of the movable member 21, such that while the movable member 21 moves under the action of the magnetic force, it applies pressure to the return member 22, thereby compressing the return member 22. After the current is disconnected, the return member 22 releases energy and thus springs back in the axial direction opposite to the compressed direction.

[0034] Understandably, after the moving part 21 applies multiple forces to the returning part 22 and is compressed, the returning part 22 may deform, making the elastic force less sensitive. This causes the returning part 22 to spring back away from its axial direction, resulting in the first connecting part 111 connected to the first moving shaft 12 also moving away from the axial direction of the first moving shaft 12, affecting the transmission effect of the shift fork assembly 11.

[0035] In a preferred embodiment, the first connecting portion 111 is fixedly connected to a first rolling element 114 at the end away from the end connected to the first moving shaft 12, and the first rolling element 114 is implemented as a spherical metal. Correspondingly, the connecting rod 113 forms a first spherical groove 11302 at the end near the first connecting portion 111.

[0036] It should be noted that the diameter of the first rolling element 114 is slightly smaller than the inner diameter of the first spherical groove 11302, so that the first rolling element 114 is engaged in the first spherical groove 11302 and can be slightly deflected in the first spherical groove 11302, so that the first connecting part 111 can rotate relative to the connecting rod 113.

[0037] In this way, when the first connecting part 111 moves in the axial direction of the return member 22 due to the deformation of the return member 22, the first rolling member 114 deflects a certain amount in the first spherical groove 11302, so that the first rolling member 114 rolls and rubs in the first spherical groove 11302 to absorb energy, and converts the absorbed energy into heat energy and sound energy, thereby reducing the transmission of vibration of the first connecting part 111, achieving a vibration-proof effect, and driving the first connecting part 111 to move along the axial direction of the first moving shaft 12, avoiding the shift fork assembly 11 from being affected by deviation and thus improving the stability and safety of the shift fork assembly 11 during the transmission process.

[0038] The transmission mechanism 10 further includes a second moving shaft 13 and a transmission gear 14. The transmission gear 14 is rotatably and movably mounted on the second moving shaft 13, and is driven by the second moving shaft 13 to move in a direction away from or towards the engine flywheel. The DC motor 30 includes an armature 31, which is rotatably mounted on the second moving shaft 13 at the end away from the transmission gear 14. The armature 31 is wrapped with a permanent magnet or a coil. When energized, under electromagnetic action, the armature 31 drives the second moving shaft 13 to rotate together.

[0039] Furthermore, the second connecting portion 112 of the shift fork assembly 11 is pivotally connected to the second moving shaft 13.

[0040] Preferably, the second connecting portion 112 has a second rolling element 115 fixedly connected to the end of the second connecting shaft 13 away from the second rolling shaft 13. The second rolling element 115 is implemented as a spherical metal. Correspondingly, the connecting rod 113 forms a second spherical groove 11303 near the second connecting portion 112.

[0041] It should be noted that the diameter of the second rolling element 115 is slightly smaller than the inner diameter of the second spherical groove 11303, so that the second rolling element 115 is engaged in the second spherical groove 11303 and can be slightly deflected in the second spherical groove 11303, so that the second connecting part 112 rotates relative to the connecting rod 113.

[0042] In this way, when the second connecting part 112 deflects and moves in the axial direction of the return member 22 due to the deformation of the return member 22, the second rolling member 115 deflects to a certain extent in the second spherical groove 11303, so that the second rolling member 115 rolls and rubs in the second spherical groove 11303 and absorbs energy. The absorbed energy is converted into heat energy and sound energy, thereby reducing the transmission of vibration of the second connecting part 112, achieving a vibration-free effect, and driving the second connecting part 112 to move along the axial direction of the second moving shaft 13, avoiding the shift fork assembly 11 from being affected by deviation and thus improving the stability and safety of the shift fork assembly 11 in the transmission process.

[0043] Specifically, when the user turns the start switch, the starter motor of the shift fork anti-deviation mechanism is energized. Current flows through the coil wrapped around the surface of the movable part 21, generating a magnetic field around the coil. This causes the movable part 21 to move on the first moving shaft 12, and drives the first connecting part 111, which is pivotally connected to the first moving shaft 12, to move in the direction where the return part 22 is compressed. At the same time, the shift fork assembly 11 begins to drive around the fixing pin, thereby driving the second connecting part 112 to rotate in the opposite direction to the first connecting part 111. This, in turn, drives the second moving shaft 13, which is pivotally connected to the second connecting part 112, and the transmission gear 14 mounted on the second moving shaft 13, to move closer to the engine flywheel until the transmission gear 14 successfully engages with the engine flywheel. At this time, the current from the battery flows into the DC motor 30, generating a magnetic field in the DC motor 30. The armature 31 of the DC motor 30 begins to rotate, driving the second moving shaft 13 to rotate, thereby driving the transmission gear 14 mounted on the second moving shaft 13 to rotate. In this way, the transmission gear 14 moves to mesh with the engine flywheel and begins to rotate, at which point the engine starts.

[0044] After startup, the user releases the ignition switch, cutting off the current to the coil wrapped around the surface of the movable part 21. The magnetic force around the movable part 21 disappears, and the force on the return part 22 also begins to disappear. At this time, the return part 22 begins to release energy, that is, the return part 22 moves in the opposite direction to the compressed direction, thereby causing the first connecting part 111 and the second connecting part 112 of the shift fork assembly 11 to rotate around the fixing pin in opposite directions, so as to disengage the transmission gear 14 from the engine flywheel. Furthermore, the current to the DC motor 30 is cut off, the armature 31 stops rotating, and the second moving shaft 13 and the connected transmission gear 14 also stop rotating.

[0045] Meanwhile, when the first connecting part 111 and the second connecting part 112 rotate, the first rolling element 114 begins to deflect at a certain angle in the first spherical groove 11302, and the second rolling element 115 begins to deflect at a certain angle in the second spherical groove 11303, so that the first rolling element 114 rolls and rubs in the first spherical groove 11302, and the second rolling element 115 rolls and rubs in the second spherical groove 11303, thereby absorbing the deflection of the shift fork assembly 11 that may occur due to the deformation of the return element 22.

[0046] Those skilled in the art should understand that the embodiments of the present invention described above and shown in the accompanying drawings are merely examples and do not limit the present invention. The advantages of the present invention have been fully and effectively realized. The functions and structural principles of the present invention have been shown and explained in the embodiments, and any modifications or variations may be made to the implementation of the present invention without departing from the stated principles.

Claims

1. A starter with anti-derailment of the fork, characterized in that, The starter motor for preventing drift by the shift fork includes a transmission mechanism, the transmission mechanism includes a shift fork assembly, and the shift fork assembly includes: A first connecting part, a second connecting part, and a connecting rod, wherein the first connecting part and the second connecting part are respectively installed at both ends of the connecting rod; A first rolling element is disposed at one end of the first connecting portion. The first rolling element is implemented as a spherical metal. The connecting rod forms a first spherical groove at one end near the first connecting portion. The first rolling element is capable of deflecting to a certain extent in the first spherical groove.

2. The starter motor for preventing deviation by the shift fork according to claim 1, characterized in that, The shift fork assembly further includes a second rolling element disposed at one end of the second connecting portion. The second rolling element is implemented as a spherical metal. Correspondingly, the connecting rod forms a second spherical groove near the second connecting portion, and the second rolling element deflects to a certain extent in the second spherical groove.

3. The fork anti-derailment starter according to claim 1, characterized in that, The starter motor for the shift fork anti-deviation also includes a control mechanism and a DC motor. The control mechanism and the DC motor transmit torque to the engine flywheel through the transmission mechanism under electromagnetic action.

4. The starter motor for preventing drift according to claim 3, characterized in that, The first connecting part is pivotally connected to the control mechanism, and the second connecting part is pivotally connected to the DC motor.

5. The starter motor for preventing drift according to claim 3, characterized in that, The transmission mechanism further includes a first movable shaft, and the first connecting part is pivotally connected to the first movable shaft.

6. The starter motor for preventing deviance of the shift fork according to claim 5, characterized in that, The transmission mechanism further includes a second movable shaft and a transmission gear, the transmission gear being rotatably and movablely mounted on the second movable shaft, the transmission gear being driven by the second movable shaft to move in a direction away from or towards the engine flywheel.

7. The starter motor for preventing drift according to claim 5, characterized in that, The control mechanism is implemented as a solenoid valve, and the control mechanism includes a movable element, which is implemented as a cylindrical iron core and is rotatably and coaxially mounted on the first moving shaft. The surface of the movable element is uniformly wrapped with a coil.

8. The starter motor for preventing drift according to claim 7, characterized in that, The control mechanism includes a return member, which is implemented as a spring and is connected to one end of the movable member.

9. The fork anti-derailment starter according to claim 6, characterized in that, The DC motor includes an armature that is rotatably mounted on the second moving shaft at one end away from the transmission gear, and the armature is wrapped with a permanent magnet or coil on its outer side.

10. The starter motor for preventing shift fork deviation according to claim 1, characterized in that, The connecting rod is provided with a connecting hole, which is rotatably mounted on a fixing pin.

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