Shifting fork adjustable starter

Abstract

The application discloses a fork-adjustable starter, which comprises a transmission mechanism, a control mechanism and a direct current motor. The control mechanism is fixedly arranged on the direct current motor and is electrically connected with the direct current motor through wires, and the control mechanism and the direct current motor are drivingly connected through the transmission mechanism. The transmission mechanism transmits the torque generated by the direct current motor to the crankshaft of the engine through the flywheel of the engine, so that the engine is started. The transmission mechanism comprises a fork assembly and a tension spring assembly. When the circuit is powered on, the fork part connected with the control mechanism rotates, the tension spring assembly is stretched to generate deformation and store energy. When the circuit is cut off, the tension spring assembly loses external force and restores to the original state, and drags the fork shaft to rotate, so that the fork part rotates rapidly and resets.

Description

Technical Field

[0001] This utility model relates to the field of starter technology, and in particular to a starter with an adjustable shift fork. Background Technology

[0002] A starter motor, also called a motor, is a device that converts electrical energy into mechanical energy based on the law of electromagnetic induction. It is usually installed near the flywheel of the engine in mechanical equipment. By driving the flywheel, it drives the crankshaft to rotate, thereby changing the engine from a stationary state to a running state.

[0003] The starter motor mainly consists of three parts: a DC motor, a solenoid valve, and a transmission mechanism. One end of the transmission mechanism's shift fork is connected to the iron core of the solenoid valve, the surface of which is wrapped with a coil. The other end of the shift fork is connected to the transmission mechanism installed in the DC motor. When energized, current flows through the coil, generating a magnetic field that attracts the iron core forward, triggering the contact switch. The shift fork also moves forward with the iron core, pushing the transmission gear of the transmission mechanism to engage with the engine flywheel. At this point, the starter motor quickly drives the flywheel to rotate, thus starting the engine. When the engine reaches a certain speed, the shift fork automatically returns to its starting position, and the starter motor automatically stops working.

[0004] When there are problems such as insufficient battery power, poor starter circuit connection, or solenoid valve failure, the starter solenoid valve may not turn properly, resulting in slow shift fork swing and slow reset, thus affecting the normal use of the engine. Utility Model Content

[0005] One advantage of this invention is that it provides a starter motor with an adjustable shift fork, by adding a tension spring assembly to the shift fork assembly of the adjustable shift fork starter motor to pull the shift fork assembly so that the shift fork assembly swings faster.

[0006] One advantage of this invention is that it provides a starter motor with an adjustable shift fork, which can be reset more quickly after power failure due to the traction of the tension spring assembly.

[0007] To achieve at least one of the advantages of this utility model, this utility model provides a starter motor with an adjustable shift fork, the adjustable shift fork starter motor including a transmission mechanism, the transmission mechanism including:

[0008] A shift fork assembly, the shift fork assembly including a shift fork member and a shift fork shaft, the shift fork member being rotatably connected to the shift fork shaft, and the shift fork member and the shift fork shaft being perpendicular to each other.

[0009] A tension spring assembly, comprising a first tension spring and a second tension spring, wherein one end of the first tension spring and one end of the second tension spring are fixedly mounted on the shift fork shaft and are respectively located on both sides of the shift fork.

[0010] According to one embodiment of the present invention, the adjustable starter fork further includes a control mechanism and a DC motor. The control mechanism is fixedly installed with the DC motor and is electrically connected to the DC motor via wires. The control mechanism and the DC motor are tractably connected through the transmission mechanism.

[0011] According to one embodiment of the present invention, the shift fork assembly forms a first end and a second end opposite thereto.

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

[0013] According to one embodiment of the present invention, one end of the first tension spring and one end of the second tension spring are fixedly installed on the shift fork shaft and are respectively located on both sides of the shift fork component, and the other end of the first tension spring and the other end of the second tension spring are fixedly installed with the housing of the control mechanism.

[0014] According to one embodiment of the present invention, one end of the first tension spring and one end of the second tension spring are fixedly installed on the shift fork shaft and are respectively located on both sides of the shift fork component, and the other end of the first tension spring and the other end of the second tension spring are fixedly installed on the housing of the DC motor.

[0015] According to one embodiment of the present invention, the tension spring assembly further includes a third tension spring and a fourth tension spring, one end of the first tension spring, the second tension spring, the third tension spring and the fourth tension spring are fixed to the shift fork shaft, and are distributed in pairs on both sides of the shift fork.

[0016] According to one embodiment of the present invention, the other ends of the first tension spring and the second tension spring are fixedly connected to the control mechanism, and the other ends of the third tension spring and the fourth tension spring are fixedly connected to the DC motor.

[0017] According to one embodiment of the present invention, the control mechanism includes a movable component, one end of which is fixedly connected to the first end of the shift fork component, and the other end of which is fitted with a copper sheet, and the surface of which is wrapped with a coil.

[0018] According to one embodiment of the present invention, the transmission mechanism further includes a central shaft and a drive gear, the drive gear being mounted on one end of the central shaft, and the central shaft being rotatably passed through the entire DC motor. Attached Figure Description

[0019] Figure 1 A schematic diagram of the adjustable starter motor described in this utility model is shown.

[0020] Figure 2 A perspective view of the adjustable starter motor with a shift fork described in this utility model is shown.

[0021] Figure 3 A cross-sectional view of the adjustable starter motor with shift fork described in this invention is shown.

[0022] Figure 4 A plan view of a first embodiment of the adjustable starter motor according to the present invention is shown.

[0023] Figure 5 A plan view of a second embodiment of the adjustable starter motor according to the present invention is shown.

[0024] Figure 6 A plan view of a third embodiment of the adjustable starter motor according to the present invention 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 fork-adjustable starter is mounted near the engine in the mechanical device and engages with the engine's flywheel to drive the engine to rotate, causing the engine to reach a starting speed, thus transitioning from a stationary state to a self-running state. Once the engine enters the free-running state, the fork-adjustable starter automatically disengages from the engine's flywheel and stops operating.

[0028] The adjustable starter motor includes a transmission mechanism 10, a control mechanism 20, and a DC motor 30. The control mechanism 20 is fixedly mounted to the DC motor 30 and electrically connected to it via wires. The control mechanism 20 and the DC motor 30 are transmissively connected via the transmission mechanism 10. The transmission mechanism 10 transmits the torque generated by the DC motor 30 to the crankshaft of the engine through the engine's flywheel, thereby starting the engine.

[0029] Specifically, the transmission mechanism 10 includes a shift fork assembly 11, which includes a shift fork member 111 and a shift fork shaft 112. The shift fork member 111 is implemented as a crank-shaped part made of metal material, and the shift fork member 111 is rotatably connected to the shift fork shaft 112. The shift fork member 111 and the shift fork shaft 112 are perpendicular to each other, so that the shift fork member 111 can move axially along the shift fork shaft 112.

[0030] The shift fork assembly 11 forms a first end 1111 and an opposite second end 1112. The first end 1111 is fixedly connected to the control mechanism 20, and the second end 1112 is fixedly connected to the DC motor 30. Thus, when the shift fork assembly 111 rotates along the axial direction of the shift fork shaft 112, the first end 1111 and the second end 1112 move in opposite directions, thereby realizing the mutual transmission between the control mechanism 20 and the DC motor 30.

[0031] Furthermore, the transmission mechanism 10 also includes a tension spring assembly 12.

[0032] In one embodiment, reference Figure 4The tension spring assembly 12 includes a first tension spring 121 and a second tension spring 122. The first tension spring 121 and the second tension spring 122 are helical springs of the same material, thickness, and length, possessing excellent resilience and ductility. Specifically, one end of the first tension spring 121 and one end of the second tension spring 122 are fixedly mounted on the shift fork shaft 112, and are respectively located on both sides of the shift fork 111. It should be noted that when the shift fork shaft 112 rotates, it can also drive the first tension spring 121 and the second tension spring 122 to rotate together. Furthermore, the other end of the first tension spring 121 and the other end of the second tension spring 122 are fixedly mounted to the housing of the control mechanism 20. That is, the first tension spring 121 and the second tension spring 122 are symmetrically mounted on both sides of the shift fork 111. Understandably, when the shift fork 111 rotates along the shift fork shaft 112, the first tension spring 121 and the second tension spring 122 mounted on both sides of the shift fork 111 experience the same tension. Thus, when energized, as the shift fork 111, connected to the control mechanism 20, rotates, the first tension spring 121 and the second tension spring 122 are simultaneously stretched, deforming and storing energy. When the circuit of the control mechanism 20 is cut off, the first tension spring 121 and the second tension spring 122 lose external force and return to their original state, pulling the shift fork shaft 112 to rotate, thereby causing the shift fork 111 to quickly reset.

[0033] In another embodiment, reference Figure 5 One end of the first tension spring 121 and one end of the second tension spring 122 are fixedly mounted on the shift fork shaft 112, and are respectively located on both sides of the shift fork 111. Unlike the previous embodiment, the other ends of the first tension spring 121 and the second tension spring 122 are fixedly mounted to the housing of the DC motor 30. Similarly, when energized, as the shift fork 111 connected to the control mechanism 20 rotates, the first tension spring 121 and the second tension spring 122 are simultaneously stretched, deformed, and store energy. When the circuit of the control mechanism 20 is cut off, the first tension spring 121 and the second tension spring 122 lose external force and return to their original state, pulling the shift fork shaft 112 to rotate, thereby causing the shift fork 111 to quickly reset.

[0034] Preferably, refer to Figure 6The number of tension spring assemblies 12 is set to four. Compared with the above embodiment, the tension spring assembly 12 further includes a third tension spring 123 and a fourth tension spring 124. The first tension spring 121, the second tension spring 122, the third tension spring 123, and the fourth tension spring 124 are implemented as helical springs of the same material, thickness, and length. One end of the first tension spring 121, the second tension spring 122, the third tension spring 123, and the fourth tension spring 124 is fixed to the shift fork shaft 112, and they are distributed in pairs on both sides of the shift fork 111. In addition, the other end of the first tension spring 121 and the second tension spring 122 is fixedly connected to the control mechanism 20, and the other end of the third tension spring 123 and the fourth tension spring 124 is fixedly connected to the DC motor 30. In this way, the force on the fork 111 is more even when it rotates due to the traction of the four tension springs of the tension spring assembly 12, and the fork shaft 112 drives the fork 111 to rotate faster under the elastic traction of the tension spring assembly 12.

[0035] It should be noted that this utility model does not limit the installation position of the tension spring assembly 12 and the control mechanism 20, nor the installation position of the tension spring assembly 12 and the DC motor 30. That is to say, the other end of the tension spring assembly 12 can be welded and fixed to the housing of the control mechanism 20 or the DC motor 30, or it can be fixed to a screw mounted on the housing.

[0036] The transmission mechanism 10 further includes a central shaft 13 and a drive gear 14. The drive gear 14 is mounted on one end of the central shaft 13, which rotatably passes through the entire DC motor 30. It should be noted that the drive gear 14 is implemented as a gear-shaped disc part that can mesh with the engine flywheel. The second end 1112 of the shift fork 111 is fixedly mounted on the central shaft 13. Thus, when the shift fork 111 rotates axially along the shift fork shaft 112, it drives the central shaft 13 to rotate, causing the drive gear 14 to move axially along the central shaft 13, thereby achieving engagement and disengagement of the drive gear 14 with the engine flywheel.

[0037] The control mechanism 20 includes a movable component 21, which is implemented as a solid cylindrical iron core. One end of the movable component 21 is fixedly connected to the first end 1111 of the shift fork 111, and a copper sheet is mounted on the other end of the movable component 21. The surface of the movable component 21 is wrapped with a coil. When energized, according to the principle of electromagnetic induction, the coil generates a magnetic field, thereby attracting the movable component 21 to move towards the end with the copper sheet, and thus driving the shift fork 111 to move.

[0038] Specifically, when the user turns the start switch, the adjustable starter motor is energized. The current generates a magnetic field through the coil wrapped around the movable part 21, thereby attracting the movable part 21 to move towards the copper plate. After the current in the coil passes through the DC motor 30, it forms a circuit with the housing of the adjustable starter motor and grounds. At this time, the adjustable starter motor rotates slowly. Simultaneously, the first end 1111 of the shift fork 111 moves towards the copper plate under the drive of the movable part 21, thereby causing the second end 1112 of the shift fork 111, which is fixed on the central shaft 13, to push the drive gear 14 to mesh with the flywheel of the engine.

[0039] During this process, the drive gear 14 slowly rotates while approaching the engine flywheel. When the drive gear 14 and the engine flywheel are engaged, the copper plate closes with the terminal of the housing, and the battery current flows into the DC motor 30. The DC motor 30 generates a magnetic field and begins to rotate, driving the central shaft 13 to rotate. This, in turn, drives the drive gear 14 mounted on the other end of the central shaft 13 to rotate. As a result, the drive gear 14 of the adjustable starter moves to engage with the engine flywheel and begins to rotate, thus starting the engine.

[0040] After startup, the user releases the ignition switch, cutting off the current to the control mechanism 20 and the DC motor 30. The moving part 21 and the shift fork 111 return to their original positions, and the drive gear 14 stops rotating. The tension spring assembly 12, having lost external force, begins to return to its original state and releases energy, pulling the shift fork 111 back to its original position quickly. This accelerates the disengagement of the drive gear 14 from the engine flywheel, preventing excessive engine speed and damage to the shift fork-adjustable starter.

[0041] 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 governor with adjustable yoke, characterized in that, The adjustable starter motor includes a transmission mechanism, the transmission mechanism comprising: A shift fork assembly, the shift fork assembly including a shift fork member and a shift fork shaft, the shift fork member being rotatably connected to the shift fork shaft, and the shift fork member and the shift fork shaft being perpendicular to each other. A tension spring assembly, comprising a first tension spring and a second tension spring, wherein one end of the first tension spring and one end of the second tension spring are fixedly mounted on the shift fork shaft and are respectively located on both sides of the shift fork.

2. The starter motor with adjustable shift fork according to claim 1, wherein the starter motor with adjustable shift fork further includes a control mechanism and a DC motor, the control mechanism is fixedly mounted to the DC motor and is electrically connected to the DC motor via a wire, and the control mechanism and the DC motor are tractably connected through the transmission mechanism.

3. The fork-adjustable starter according to claim 2, wherein the fork assembly forms a first end and a second end opposite thereto.

4. The starter motor with adjustable shift fork according to claim 3, wherein the first end is fixedly connected to the control mechanism and the second end is fixedly connected to the DC motor.

5. The starter motor with adjustable shift fork according to claim 2, wherein one end of the first tension spring and one end of the second tension spring are fixedly mounted on the shift fork shaft and are respectively located on both sides of the shift fork, and the other end of the first tension spring and the other end of the second tension spring are fixedly mounted to the housing of the control mechanism.

6. The starter motor with adjustable shift fork according to claim 2, wherein one end of the first tension spring and one end of the second tension spring are fixedly mounted on the shift fork shaft and are respectively located on both sides of the shift fork, and the other end of the first tension spring and the other end of the second tension spring are fixedly mounted to the housing of the DC motor.

7. The starter motor with adjustable shift fork according to claim 2, wherein the tension spring assembly further includes a third tension spring and a fourth tension spring, one end of the first tension spring, the second tension spring, the third tension spring and the fourth tension spring are fixed to the shift fork shaft and are distributed in pairs on both sides of the shift fork.

8. The starter motor with adjustable shift fork according to claim 7, wherein the other ends of the first tension spring and the second tension spring are fixedly connected to the control mechanism, and the other ends of the third tension spring and the fourth tension spring are fixedly connected to the DC motor.

9. The starter motor with adjustable shift fork according to claim 3, wherein the control mechanism includes a movable member, one end of the movable member is fixedly connected to the first end of the shift fork member, the other end of the movable member is fitted with a copper sheet, and the surface of the movable member is wrapped with a coil.

10. The starter motor with adjustable shift fork according to claim 9, wherein the transmission mechanism further includes a central shaft and a drive gear, the drive gear being mounted at one end of the central shaft, and the central shaft being rotatably passed through the entire DC motor.

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