An electric starter and a chainsaw

Abstract

This utility model discloses an electric starter and a chainsaw, including a starter housing, a handle and a start switch disposed on the starter housing, a mounting groove on the starter housing, a starting device and a transmission device mounted in the mounting groove, the transmission device driving the starting device, a motor disposed on the transmission device, the motor and the transmission device being coaxially arranged, and the axis of the motor being parallel to the axis of the starting device, the starter housing having an integrally formed mounting base for mounting a power supply on one side. The chainsaw also includes a chainsaw body, on which the aforementioned electric starter is mounted. This utility model is designed to allow the electric starter to be independently installed on commercially available chainsaws, reducing the need for specially designed electric starter chainsaws, significantly reducing manufacturing costs, and also greatly reducing the purchase cost for consumers, facilitating widespread promotion and use.

Description

Technical Field

[0001] This utility model relates to the field of chainsaw technology, and in particular to an electric starter and a chainsaw. Background Technology

[0002] Currently available chainsaws on the market use a manual start disc. Once the manual start speed exceeds the flywheel's minimum ignition speed, the engine can start and operate. Manual starts are not only laborious but also prone to damage. Therefore, electric starters have emerged, such as those with authorization notice number CN220151463U. A Chinese utility model patent discloses an electrically started chainsaw, including a chainsaw body, an engine, and a flywheel that rotates synchronously with the engine. A rope pulley is located on the outer side of the flywheel, and a starter disc is mounted on the flywheel. When the rope pulley rotates, it drives the starter disc to rotate in one direction. The chainsaw body includes a starter motor that drives the starter disc and a reset / stop switch that controls the starter motor's operation. When the starter motor starts, it drives the starter disc to rotate in one direction. Although this type also uses a motor for starting, it is evident that the motor's axis is perpendicular to the flywheel's axis, and there are corresponding oil tanks and battery packs. Existing electric starting mechanisms are incompatible with commercially available chainsaws. If electric starting is required, the unique design and manufacturing described in the aforementioned patent are necessary, resulting in poor versatility. This significantly increases the overall production cost of the chainsaw, hindering mass production. Therefore, improvements are necessary. Utility Model Content

[0003] (a) Technical problems that need to be solved

[0004] To address the shortcomings of existing technologies, this utility model provides an electric starter and a chainsaw. The design allows the electric starter to be installed independently on chainsaws available on the market, reducing the need for specially designed electric starter chainsaws, significantly lowering production and manufacturing costs, and also greatly reducing the purchase cost for consumers, thus facilitating widespread promotion and use.

[0005] (ii) Technical solutions to be adopted

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0007] An electric starter includes a starter housing, a handle and a starter switch disposed on the starter housing. The starter housing has a mounting groove in which a starting device and a transmission device are mounted. The transmission device drives the starting device. A motor is disposed on the transmission device. The motor and the transmission device are arranged coaxially, and the axis of the motor is parallel to the axis of the starting device. A mounting base integrally formed with the starter housing for mounting a power supply is disposed on one side of the starter housing.

[0008] Preferably, the starting device includes a starting component disposed inside the starter housing and manually started by the handle. The handle is connected to the starting component by a starting pull rope. After the handle is pulled, the starting component can be rotated inside the starter housing by the starting pull rope. An electrically started element is provided on the starting component, and the starting element is driven by the transmission device.

[0009] Preferably, the starting assembly includes a rotatable starting rope wheel disposed inside the starter housing and a lower coil spring disposed on the lower surface of the starting rope wheel. The starting pull rope is wound around the periphery of the starting rope wheel. A ratchet knob is disposed on the upper surface of the starting rope wheel. A reset member is disposed between the ratchet knob and the starting rope wheel. A ratchet disc that cooperates with the ratchet knob is disposed on the lower surface of the starting assembly.

[0010] Preferably, the reset element is a torsion spring.

[0011] Preferably, the ratchet knobs are arranged in pairs.

[0012] Preferably, the starting component includes a starting wheel disposed on the starting rope wheel, a ratchet disc disposed on the lower surface of the starting wheel, the starting wheel and the ratchet disc being integrally formed, a starting ratchet disposed on the upper surface of the starting wheel, an upper coil spring disposed between the starting ratchet and the starting wheel, a driven wheel disposed on the starting wheel, and the driven wheel being connected to the transmission device.

[0013] Preferably, the starter housing has a mounting shaft that passes through the starter rope wheel, starter wheel and starter ratchet, and the starter ratchet is fixedly connected to the mounting shaft by a locking member.

[0014] Preferably, the transmission device includes a drive component mounted on the motor, the drive component being driven by a transmission assembly, and the transmission assembly being driven by the driven wheel.

[0015] Preferably, the transmission assembly includes a planetary reducer and a driving wheel disposed on the planetary reducer, the driving wheel being meshed and driven by the driven wheel, and the driving component being meshed and driven by the planetary reducer.

[0016] Preferably, the driving component is a sun gear, which is mounted on the output shaft of the motor, and the output shaft of the motor and the mounting hole in the sun gear are interference fit.

[0017] Preferably, the mounting base is provided with a circuit board containing MOSFETs, the power supply is plugged into the circuit board, and the circuit board is connected to the motor and the start switch respectively.

[0018] In addition, this utility model also provides a chainsaw, including a chainsaw body, on which an electric starter as described above is installed.

[0019] Preferably, an additional stator coil is added at the flywheel position of the chainsaw body. The stator coil is connected to the high-voltage transformer in the chainsaw body, and a circuit board is provided on the inner wall of the starter cover. The circuit board is connected to the power supply.

[0020] (III) The technical effects to be achieved

[0021] Compared with the prior art, the beneficial effects of this utility model are:

[0022] Firstly, this utility model includes a starter cover and a handle and a starter switch mounted on the starter cover. The starter cover has a mounting groove in which a starting device and a transmission device are mounted. The transmission device drives the starting device. A motor is mounted on the transmission device, and the motor and transmission device are arranged coaxially, with the motor's axis parallel to the axis of the starting device. A mounting base integrally formed with the starter cover for mounting a power supply is provided on one side of the starter cover. This design, with the motor's axis parallel to both the transmission device and the starting device, and the motor vertically mounted on the starter cover, saves space and significantly reduces costs. More importantly, this integrated electric starter design is suitable for 80% of chainsaws on the market, offering good compatibility and avoiding the high cost of redesigning chainsaws, thus demonstrating a broad market prospect.

[0023] Secondly, the transmission component of this utility model includes a planetary reducer and a driving wheel mounted on the planetary reducer. The driving wheel is meshed with and connected to the driven wheel, while the driving component is meshed with and connected to the planetary reducer. The driven wheel is driven by the planetary reducer in conjunction with the driving wheel. This type of electric starting structure is simpler, so the electric starter of this utility model only costs tens of yuan, ending the current cost range of 200-600 yuan. This greatly reduces costs and is more conducive to mass production and application, and has a large market prospect.

[0024] Thirdly, this utility model includes a chainsaw body, on which an electric starter as described above is installed. This makes it compatible with 80% of chainsaws on the market, with good compatibility, avoiding the high cost of redesigning chainsaws, and has broad market prospects.

[0025] Fourth, an additional stator coil is added to the flywheel position of the chainsaw body of this utility model. The stator coil is connected to the high voltage transformer in the chainsaw body, and a circuit board is set on the inner wall of the starter cover. The circuit board is connected to the power supply. When the flywheel and the high voltage transformer are running, they will generate a high voltage. This voltage is used to charge the battery pack, which can charge itself and greatly extend the service life. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of an electric starter according to the present invention.

[0027] Figure 2 This is a schematic diagram of an electric starter according to the present invention, viewed from below.

[0028] Figure 3 for Figure 2 Sectional view along the AA direction.

[0029] Figure 4 This is a schematic diagram of an explosion of an electric starter according to the present invention.

[0030] Figure 5 This is an exploded view of the starting device in an electric starter according to the present invention.

[0031] Figure 6 This is a schematic diagram of the starting component structure in an electric starter according to the present invention.

[0032] Figure 7 This is a schematic diagram of the starting device in an electric starter according to the present invention.

[0033] Figure 8 This is a three-dimensional schematic diagram of the starting device in an electric starter according to the present invention.

[0034] Figure 9 This is a schematic diagram of the ratchet lever and ratchet disc working together in an electric starter according to this utility model.

[0035] Figure 10 This is a schematic diagram of the lower coil spring structure in an electric starter according to the present invention.

[0036] Figure 11 This is a schematic diagram of the upper coil spring structure in an electric starter according to the present invention.

[0037] Figure 12 This is a schematic diagram of the transmission component structure in an electric starter according to the present invention.

[0038] Figure 13 This is a schematic diagram of the overall transmission component in an electric starter according to the present invention.

[0039] Figure 14 This is a schematic diagram of the fixed base structure in an electric starter according to the present invention.

[0040] Figure 15 This is a schematic diagram of a spur gear transmission embodiment in an electric starter according to the present invention.

[0041] Figure 16 This is an exploded view of an embodiment of a spur gear transmission in an electric starter according to the present invention.

[0042] Figure 17 This is a schematic diagram of an embodiment of a worm gear drive in an electric starter according to the present invention.

[0043] Figure 18 This is an exploded view of the worm gear transmission in an electric starter according to the present invention.

[0044] Figure 19 This is an exploded view of a two-stage planetary gear transmission in an electric starter according to the present invention.

[0045] Figure 20 This is a schematic diagram of an embodiment of a two-stage planetary gear transmission in an electric starter according to the present invention.

[0046] In the diagram: 1, starter housing; 2, handle; 3, starter switch; 4, starting device; 5, transmission device; 6, motor; 7, mounting base; 11, locking element; 12, circuit board; 41, starting assembly; 42, starting component; 51, driving component; 52, transmission assembly; 411, starting rope pulley; 412, ratchet lever; 413, ratchet disc; 421, starting wheel; 422, starting ratchet; 423, upper coil spring; 424, driven wheel; 521, planetary reducer; 522, driving wheel; 5211, fixed base; 5212, bearing; 5213, cage; 5214, planetary gear; 5215, internal gear ring; 5216, output rod; 5217, anti-friction pad. Detailed Implementation

[0047] In the description of this utility model, it should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to or indirectly connected to the other element.

[0048] In the description of this utility model, it should be noted that the terms "center," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the utility model product is in use. 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, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "multiple" means two or more, unless otherwise explicitly specified. "Several" means one or more, unless otherwise explicitly specified.

[0049] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0050] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. However, it should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit its scope. Furthermore, descriptions of well-known structures and technologies are omitted in the following description to avoid unnecessarily obscuring the concept of the present utility model.

[0051] Example 1: See Figure 1 , Figure 2 , Figure 3 and Figure 4An electric starter includes a starter housing 1, a handle 2, and a start switch 3 mounted on the starter housing 1. The starter housing 1 has a mounting groove in which a starting device 4 and a transmission device 5 are mounted. The transmission device 5 drives the starting device 4. A motor 6 is mounted on the transmission device 5, and the motor 6 is coaxially arranged with the transmission device 5, with the axis of the motor 6 parallel to the axis of the starting device 4. A mounting base 7, integrally formed with the starter housing 1, is provided on one side of the starter housing 1 for mounting a power supply. The power supply on the mounting base 7 is connected to the motor 6 and the start switch 3. This design not only integrates various components, making it compatible with 80% of chainsaws on the market, but also significantly improves the conversion of ordinary chainsaws into electric and manual chainsaws, making them more convenient for users. More importantly, it greatly reduces production costs. Electric starting can be achieved simply by adding this electric starter, reducing the cost of electric start chainsaws from 200-600 yuan to only 20-30 yuan. This design has significant market value.

[0052] Example 2: This can be explained based on Example 1, such as... Figures 3 to 14As shown, the starting device 4 includes a starting assembly 41 located inside the starter housing 1 and manually activated by a handle 2. The handle 2 is connected to the starting assembly 41 via a starting pull rope. When the handle 2 is pulled, the starting assembly 41 rotates within the starter housing 1 via the starting pull rope. An electrically activated starter 42 is mounted on the starting assembly 41. A transmission device 5 is connected to the starter 42. In use, when the start switch 3 is activated, the motor 6 operates, which in turn activates the transmission device 5. The transmission device 5 then drives the starter 42, which in turn drives the flywheel on the chainsaw. The flywheel then drives the engine in the chainsaw, thus achieving electric start. When the handle 2 is pulled, the handle 2 rotates the starting assembly 41 and the starter 42 together via the starting pull rope. This causes the starter 42 to drive the flywheel on the chainsaw, which in turn drives the engine in the chainsaw, thus achieving manual start. The user can choose between these two operating modes.Further explanation: The starting assembly 41 includes a rotatable starting rope wheel 411 located inside the starter housing 1, and a lower coil spring (not shown in the figure) located on the lower surface of the starting rope wheel 411. This lower coil spring allows the starting rope wheel 411 to rotate back to its original position after the handle 2 is released, typically clockwise. A starting pull rope is wound around the periphery of the starting rope wheel 411. A ratchet knob 412 is located on the upper surface of the starting rope wheel 411. A reset element (not shown in the figure, preferably a torsion spring for automatic reset) is located between the ratchet knob 412 and the starting rope wheel 411. The lower surface of the starting element 42 is provided with a mechanism that interacts with the ratchet knob. The ratchet disc 413, which is matched with the ratchet knob 412, has its groove engaging with the ratchet knob 412. This allows the bottom starting rope wheel 411 to rotate counterclockwise, driving the upper starting component 42 to start the machine. Furthermore, when the motor 6 rotates, driving the transmission device 5, the transmission device 5 only drives the starting component 42 to rotate, while the bottom starting rope wheel 411 remains stationary. In this embodiment, the ratchet knobs 412 are arranged in pairs, which allows them to better engage with the grooves in the ratchet disc 413. Further explanation is provided: the starting component 42 includes components provided with the starting... The starting wheel 421 on the moving rope wheel 411 has a ratchet disc 413 on its lower surface. The starting wheel 421 and the ratchet disc 413 are integrally formed, greatly improving the structural rigidity. A starting ratchet 422 is provided on the upper surface of the starting wheel 421. The starting ratchet 422 is connected to the flywheel in the chainsaw. In this starter, when the starting ratchet 422 rotates counterclockwise (whether electrically or manually), it can drive the flywheel in the chainsaw to rotate and start. When the machine is running, the starting ratchet 422 disengages, ensuring the starter remains stationary. An upper coil spring 423 is provided between the starting ratchet 422 and the starting wheel 421. Between the starting ratchet 422 and the starting rope pulley 411, there is a buffer starting wheel 421. A driven wheel 424 is mounted on the starting wheel 421 and is connected to the transmission device 5. The main purpose of this starting wheel 421 is to house the driven wheel 424 and the upper coil spring 423. The driven wheel 424 facilitates deceleration, while the upper coil spring 423 is used to buffer the impact during startup, preventing the starting ratchet 422 from easily breaking. (The purpose is to provide buffering regardless of whether it's an electric or manual start, protecting the user's hand from impact injury and preventing damage to the machine.) In this embodiment, the driven wheel 424 and the starting wheel 421 are fixed together with screws or bolts for easy disassembly and installation.

[0053] Among them, such as Figures 3 to 14As shown, a mounting shaft is provided inside the starter cover 1, which passes through the starter rope wheel 411, the starter wheel 421 and the starter ratchet 422. The starter ratchet 422 and the mounting shaft are fixedly connected together by a locking member 11. In this embodiment, the locking member 11 is a fixing screw and a washer, which facilitates disassembly and installation.

[0054] Among them, such as Figures 3 to 14As shown, the transmission device 5 includes a drive component 51 mounted on the motor 6. The drive component 51 is connected to a transmission assembly 52, which is connected to a driven wheel 424. The motor 6 drives the drive component 51, which in turn drives the transmission assembly 52. ​​The transmission assembly 52 then drives the driven wheel 424, which in turn drives the starting ratchet 422 via the starting wheel 421. The rotation of the starting ratchet 422 drives the flywheel in the chainsaw to rotate, thus achieving electric starting. Further, the transmission assembly 52 includes a planetary reducer 521 and a drive wheel 522 mounted on the planetary reducer 521. The drive wheel 522 is meshed with the driven wheel 424, and the drive component 51 is meshed with the planetary reducer 521. In this embodiment, the drive component 51 is a sun gear, mounted on the output shaft of the motor 6. The output shaft of the motor 6 and the mounting hole in the sun gear are interference-fitted. The sun gear is meshed with the planetary reducer, which in this embodiment includes a component mounted on the starter housing. 1. An internal fixed seat 5211 and a bearing 5212 (deep groove ball bearing) disposed in the fixed seat 5211. One end face of the fixed seat 5211 is provided with an internally housed cage 5213. Planetary gears 5214 are fixed on the cage 5213. In this embodiment, three planetary gears 5214 are used (the cage 5213 mainly fixes three planetary gears 5214). An internal gear ring 5215 is provided on the end face of the cage 5213. The planetary gears 5214 are disposed inside the internal gear ring 5215. At the center of the internal gear ring 5215, a... A sun gear is provided, which meshes with a planetary gear 5214. An output rod 5216 is mounted on a cage 5213, and the output rod 5216 is interference-fitted with the cage 5213. The output rod 5216 passes through a bearing 5212, which is used to fix the output rod 5216. A drive wheel 522 is mounted on the output rod 5216. A mounting base 5211 is used to install the bearing 5212 and to press the internal gear ring 5215. Further, both one end face of the planetary gear 5214 and one end face of the cage 5213 are provided with... The wear-reducing pad 5217 is designed to prevent the rotating planetary gear 5214 and cage 5213 from directly contacting the starter housing 1 (plastic part), thus reducing wear. The wear-reducing pad 5217 on one end face of the planetary gear 5214 and the wear-reducing pad 5217 on one end face of the cage 5213 are on different end faces. To further explain, a retaining ring is provided on the output rod 5216 located in the fixed seat 5211 position. The retaining ring is used to limit the axial movement of the fixed seat 5211, which is beneficial for the first stage of deceleration through the planetary reducer.

[0055] Among them, motor 6 is either a brushed motor or a brushless motor, offering a wide range of options.

[0056] Among them, such as Figures 3 to 14 As shown, the diameter of the driven wheel 424 is larger than that of the driving wheel 522, which is beneficial for the two-stage reduction. The output rod 5216 at the connection point with the driving wheel 522 is splined and tightened with screws, which facilitates installation and makes the installation more secure.

[0057] Among them, such as Figures 3 to 14 As shown, the axes of the transmission assembly 52 and the motor 6 are coincidentally distributed, while the axis of the transmission assembly 52 is parallel to the starting device 4, and the motor 6 is perpendicular to the starter cover 1. This arrangement can save space and help reduce the manufacturing cost of the starter cover 1.

[0058] Example 3: Based on Example 2, other methods can also be used for the transmission device 5. Specifically, the driven wheel 424 can be modified in the following ways:

[0059] like Figure 15 and Figure 16 As shown, in the first type, the transmission device 5 includes an output gear 511 mounted on the motor 6 and a spur gear 512 (or helical gear) mounted on the starter housing 1 and distributed parallel to the axis of the starter device 4. The spur gear 512 (or helical gear) meshes with the starter device 4 for transmission. A transmission gear 513 is mounted on the end face of the spur gear 512 and meshes with the output gear 511 for transmission. The driven wheel 424 is located on the end face of the starter wheel 421 on the side away from the starter ratchet 422. The motor 6 is located on the inner side of the starter housing 1, rather than exposed on the outer surface, making the overall surface smoother and saving space.

[0060] like Figure 17 and Figure 18 As shown, in the second type, the transmission device 5 includes a worm 514 mounted on the motor 6 and a turbine 515 meshing with the worm 514. The ratchet disc 413, ratchet lever 412, starting wheel 421, reset member and driven wheel 424 are replaced by the turbine 515. A torsion spring 516 is provided between the turbine 515 and the starting ratchet 422. The turbine 515 passes through the starting rope wheel 411, and the starting ratchet 422 is provided on the upper end face of the turbine 515. The motor 6 is laid flat on the inner end face of the starter cover 1. In this way, the motor 6 is driven by the worm 514 and the turbine 515.

[0061] like Figure 19 and Figure 20As shown, in the third type, the transmission device 5 includes two coaxially distributed two-stage planetary gears mounted on the motor 6. The ratchet disc 413, ratchet lever 412, starting wheel 421, reset element and driven wheel 424 are replaced with two-stage planetary gears. A torsion spring is provided between the planetary gears and the starting ratchet 422. The motor 6 is arranged coaxially with the two-stage planetary gears, that is, the motor 6 is perpendicular to the starter cover 1 and the motor 6 is located on the outer surface of the starter cover 1.

[0062] It is evident that multiple transmission methods are available, thus providing a wide range of choices.

[0063] Example 4: Based on Example 1, Example 2, or Example 3, a circuit board is provided on the mounting base 7. The circuit board contains MOSFETs (Field-Effect Transistors). The power supply is plugged into the circuit board, which is connected to the motor 6 and the start switch 3. This facilitates the installation and removal of the power supply and makes it easy to replace. During startup, the instantaneous current may be too large, potentially burning out the motor 6 and the start switch 3. The MOSFETs on the circuit board limit the delay, greatly improving the service life. Furthermore, the power supply uses a battery pack, facilitating future replacement. Even further, the mounting base 7 is located on one side of the starter housing 1, eliminating the problem of the power supply being suspended and prone to falling and damage, thus significantly extending the power supply's service life.

[0064] Example 5: Based on Example 1, Example 2, Example 3, or Example 4, this utility model also provides a chainsaw, including a chainsaw body, on which the above-mentioned electric starter is installed. In this example, the electric starter is fixed to the chainsaw body by a fixing member, specifically, the electric starter is fixed to the corresponding position of the flywheel of the chainsaw body by the fixing member. The fixing member is a bolt, screw, or screw, etc., which is convenient for users to manually install and disassemble, and is conducive to large-scale promotion and application.

[0065] To further explain, an additional stator coil is added to the flywheel position of the chainsaw body, changing from one stator coil to two. Both stator coils are connected to the high-voltage transformer (containing a chip) in the chainsaw body. A circuit board 12 is installed on the inner wall of the starter housing 1, connected to a power source. When the flywheel and high-voltage transformer are running, they generate a high-voltage current of 300 volts to charge the battery pack. The circuit board 12's function is rectification and voltage reduction (stabilization). Furthermore, the circuit board 12, when small enough, can be integrated into the high-voltage transformer (containing a chip), saving space and reducing the manufacturing cost of the starter housing 1. One of the components is the original stator coil, which can amplify 20 kV to ignite the spark plug. Now, a smaller stator coil (voltage coil) is added to generate 100-200 volts. This is controlled by a high-voltage transformer (containing a chip), which then rectifies the circuit on circuit board 12 to provide a small current to the battery pack. During chainsaw operation, a certain amount of power is generated, which charges the battery pack through the rectifier and voltage regulator on circuit board 12. The power is approximately 2-3W, 21V, with a current of about 0.1A. During startup, about 50A is required, consuming a very short time (3 seconds). Theoretically, only 25 minutes of continuous machine use is needed to fully charge the battery pack for the next start. This reduces battery capacity, charger requirements, and costs. Because the chainsaw itself has a high-voltage transformer, its function is to generate current by producing a certain magnetic flux when the flywheel rotates, and then amplify it through the stator coil to generate high voltage. The chip in the high-voltage transformer can check its rotation speed by generating power at intervals, thereby controlling the rotation speed range of 2500 to 12000 and realizing reverse charging.

[0066] When the handle 2 is manually pulled to start the machine, the handle 2 will drive the starter rope wheel 411 to rotate counterclockwise via the starter rope. In turn, the starter rope wheel 411 will drive the starter wheel 421 and starter ratchet 422 to rotate counterclockwise through the ratchet knob 412 and ratchet disc 413. This allows the starter ratchet 422 to drive the flywheel in the chainsaw to rotate and start the chainsaw. This is the manual start mode. When the handle 2 is released, the lower coil spring in the starter rope wheel 411 can rotate clockwise to reset, thus resetting the starter rope wheel 411 clockwise and the starter rope and handle 2.

[0067] When this invention is started via the start switch 3, the start switch 3 activates the motor 6. The motor 6 drives the drive wheel 522 via the planetary reducer 521. The drive wheel 522 meshes with the driven wheel 424, which in turn drives the start wheel 421 to rotate. The start wheel 421 then drives the start ratchet 422 to rotate counterclockwise. The start ratchet 422 drives the flywheel in the chainsaw to rotate and start the chainsaw. The chainsaw begins to work. Because the ratchet knob 412 is disengaged from the groove in the ratchet disc 413 on the start wheel 421, the start wheel 421 can only rotate counterclockwise independently, while the start rope wheel 411 remains stationary. This achieves an electric start mode. The long or short press of the start switch 3 is controlled by the circuit board to limit the start time, thus protecting the motor 6 and preventing overheating.

[0068] All standard parts used in this application can be purchased from the market. The specific connection methods of each part adopt conventional means such as bolts, screws and screws that are mature in the existing technology. The internal components of the high voltage transformer, circuit board and processor adopt conventional models in the existing technology, and their internal structure belongs to the existing technology structure. Workers can complete normal operation according to the existing technical manual. In addition, the circuit connection adopts conventional connection methods in the existing technology, and will not be described in detail here.

[0069] It should be noted that although the above embodiments have been described herein, this does not limit the scope of patent protection for this utility model. Therefore, any changes and modifications made to the embodiments described herein based on the innovative concept of this utility model, or equivalent structural or procedural transformations made using the content of this utility model's specification and drawings, directly or indirectly applying the above technical solutions to other related technical fields, are all included within the scope of protection of this utility model patent.

Claims

1. An electric starter, characterized in that: The device includes a starter housing (1) and a handle (2) and a starter switch (3) mounted on the starter housing (1). The starter housing (1) has a mounting groove in which a starter device (4) and a transmission device (5) are mounted. The transmission device (5) drives the starter device (4). The transmission device (5) has a motor (6) mounted on it. The motor (6) is coaxial with the transmission device (5), and the axis of the motor (6) is parallel to the axis of the starter device (4). A mounting base (7) integrally formed with the starter housing (1) for mounting a power supply is provided on one side of the starter housing (1).

2. The electric starter as described in claim 1, characterized in that: The starting device (4) includes a starting component (41) that is manually started by the handle (2) inside the starter cover (1). The handle (2) is connected to the starting component (41) by a starting pull rope. After the handle (2) is pulled, the starting component (41) can rotate inside the starter cover (1) by the starting pull rope. An electric starting element (42) is provided on the starting component (41). The transmission device (5) is connected to the starting element (42).

3. The electric starter as described in claim 2, characterized in that: The starting assembly (41) includes a starting rope wheel (411) that can rotate inside the starter cover (1) and a lower coil spring provided on the lower surface of the starting rope wheel (411). The starting rope wheel (411) is surrounded by the starting pull rope. The starting rope wheel (411) is provided with a ratchet knob (412) on the upper surface of the starting rope wheel (411). A reset member is provided between the ratchet knob (412) and the starting rope wheel (411). The starting component (42) is provided with a ratchet disc (413) that cooperates with the ratchet knob (412) on the lower surface of the starting component (42).

4. The electric starter as described in claim 3, characterized in that: The starting component (42) includes a starting wheel (421) disposed on the starting rope wheel (411), a ratchet disc (413) disposed on the lower surface of the starting wheel (421), the starting wheel (421) and the ratchet disc (413) being integrally formed, a starting ratchet (422) disposed on the upper surface of the starting wheel (421), an upper coil spring (423) disposed between the starting ratchet (422) and the starting wheel (421), a driven wheel (424) disposed on the starting wheel (421), and the driven wheel (424) being connected to the transmission device (5) for transmission.

5. The electric starter as described in claim 4, characterized in that: The transmission device (5) includes a drive component (51) mounted on the motor (6), the drive component (51) being connected to a transmission assembly (52), and the transmission assembly (52) being connected to the driven wheel (424).

6. The electric starter as described in claim 5, characterized in that: The transmission assembly (52) includes a planetary reducer (521) and a drive wheel (522) disposed on the planetary reducer (521). The drive wheel (522) is meshed with the driven wheel (424), and the drive member (51) is meshed with the planetary reducer (521).

7. The electric starter as described in claim 6, characterized in that: The drive component (51) is a sun gear, which is mounted on the output shaft of the motor (6). The output shaft of the motor (6) and the mounting hole in the sun gear are interference fit.

8. The electric starter as described in claim 1, 2, 3, 4, 5, 6, or 7, characterized in that: The mounting base (7) is provided with a circuit board containing MOSFETs. The power supply is plugged into the circuit board. The circuit board is connected to the motor (6) and the start switch (3).

9. A chainsaw, comprising a chainsaw body, characterized in that: The chainsaw body is equipped with an electric starter as described in any one of claims 1 to 8.

10. The chainsaw as described in claim 9, characterized in that: An additional stator coil is added to the flywheel position of the chainsaw body. The stator coil is connected to the high voltage transformer in the chainsaw body. A circuit board (12) is provided on the inner side wall of the starter cover (1). The circuit board (12) is connected to the power supply.

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