Driving motor, magneto-electric starting device of driving motor and chain saw of magneto-electric starting device

Abstract

The invention relates to a motor, a magneto-electric starting mechanism of the motor and a chain saw of the magneto-electric starting mechanism, and aims to at least solve the problem that an electric starting mechanism of a chain saw in the existing market is not easy to use. The motor comprises a stator assembly and a rotor assembly which is matched with the stator assembly and can rotate relative to the stator assembly; the motor is arranged on the rotor assembly and acts on the rotor assembly to generate electromagnetic torque, so that rotation of the rotor assembly is achieved, the rotor assembly comprises a rotor shell and a flywheel assembly fixed to the rotor shell in an integrated or split mode, and a coupling mechanism used for being matched with an ignition assembly to enable the ignition assembly to ignite is arranged on the flywheel assembly.

Description

Technical Field

[0001] The present application relates to a driving motor and a magneto electric starting device thereof and a chain saw thereof. Background Art

[0002] The magneto mechanism used for engine ignition on the existing chain saw is generally an outer rotor magneto, such as the magneto mechanism disclosed in the Chinese utility model patent with authorization announcement number CN201766477U, which consists of a rotor assembly and a stator assembly, wherein the stator assembly includes a fixed base plate, a power coil, an ignition coil, and an igniter. The power coil and the ignition coil are assembled on the fixed base plate, and then fixedly mounted on the engine housing. The rotor assembly is mounted on the crankshaft of the engine and rotates with the crankshaft. The rotor assembly includes a rotor, a magnetic pole core and a magnet. Through the rotation of the rotor assembly, the stator assembly cuts the magnetic lines of force of the rotating magnetic poles of the rotor assembly, and induces current on the power coil, so that the secondary induction of the ignition coil generates a high voltage output greater than 20KV to ignite the engine.

[0003] In the above structure, the rotor assembly is generally driven to rotate by pulling a rope manually, that is, a rope is wound around the rotor assembly, and the rope is pulled by a hand to drive the rotor assembly to rotate, and ignition is relatively laborious.

[0004] A Chinese utility model patent with authorization announcement number CN220151463U discloses an electric start chain saw, in which an engine and a flywheel rotating synchronously with the engine are arranged in the chain saw body, a rope pulley is arranged on the outer side of the flywheel, and a starting disk is arranged on the flywheel. When the rope pulley rotates, the starting disk is driven to rotate in one direction. The chain saw body is provided with a starting motor that drives the starting disk and a reset flameout switch that controls the start of the starting motor. When the starting motor is turned on, the starting disk is driven to rotate, and the flywheel connected to the starting disk also rotates synchronously. When the speed exceeds the minimum ignition speed of the flywheel, the engine can ignite normally and start quickly. At the same time, a hand pull rope can be used to start the engine, so that the user can flexibly choose between the two starting methods of motor and hand pull according to actual conditions.

[0005] The problem with the above structure is that it is complex and has many parts, which results in a relatively large volume of the chain saw. Summary of the invention

[0006] The purpose of the present application is to provide a motor and a magnetic motor electric starting mechanism and a chain saw thereof, so as to at least solve the problem that the electric starting mechanism of the chain saw on the existing market is not easy to use.

[0007] In order to achieve the above-mentioned purpose, the present application provides a driving motor, including a stator assembly and a rotor assembly that cooperates with the stator assembly and can rotate relative to the stator assembly, and the rotation of the rotor assembly is achieved by electromagnetic induction between the stator assembly and the rotor assembly. The rotor assembly includes a rotor housing that is sleeved outside the stator assembly and a flywheel assembly that is fixed to the rotor housing in an integral or split manner. The flywheel assembly is provided with a coupling mechanism for cooperating with an ignition assembly to ignite the ignition assembly.

[0008] Preferably, a rotor is fixed to the inner wall of the rotor housing, and a magnetic steel is provided on the rotor.

[0009] Preferably, the magnetic steels are evenly spaced and distributed on the inner wall of the rotor.

[0010] Preferably, the rotor housing is fixedly connected to a rotating shaft passing through the stator assembly, and the stator assembly is provided with a through hole for the rotating shaft to pass through, and there is a gap between the inner wall of the through hole and the rotating shaft.

[0011] Preferably, the flywheel assembly comprises an integral or split flywheel arranged on the outer wall of the rotor housing.

[0012] Preferably, the flywheel is provided with fan blades.

[0013] Preferably, the rotor assembly is provided with a rotating shaft passing through the stator assembly, and the stator assembly is provided with a through hole for the rotating shaft to pass through, and a gap for accommodating lubricating oil is formed between an inner wall of the through hole and the rotating shaft.

[0014] Preferably, an oil sealing mechanism is provided on a side of the stator assembly facing away from the rotor assembly.

[0015] Preferably, the oil sealing mechanism comprises an oil sealing plate sleeved on the rotating shaft, and the oil sealing plate and the stator assembly are circumferentially positioned at least by positioning pins.

[0016] Preferably, the oil seal plate is provided with a screw hole for the positioning pin to pass through, and the perforated inner wall of the stator assembly is provided with a positioning groove that cooperates with the positioning pin.

[0017] The present application also relates to a magnetic motor electric starting device, comprising an ignition assembly and a drive motor, characterized in that the drive motor comprises the drive motor as described above, the drive motor cooperates with the ignition assembly through a coupling mechanism, and through the rotation of the rotor assembly, the ignition assembly cuts the magnetic flux lines of the coupling mechanism to achieve discharge ignition.

[0018] The present application also relates to a chain saw, comprising a chain saw body, on which the magnetic motor electric starting mechanism as described above is provided.

[0019] According to the above content, the beneficial effects of this application are:

[0020] The present application configures the rotor assembly of the driving motor to include a rotor housing and a flywheel assembly fixed on the rotor housing, and provides a coupling mechanism on the flywheel assembly for cooperating with the ignition assembly to ignite the ignition assembly, so that the driving motor can be used for electric discharge ignition of the ignition assembly and electric starting of the chainsaw, and has the advantages of simple and compact structure, small size and low cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0022] Figure 1 This is the overall structure of the application Figure 1 ;

[0023] Figure 2 This is the overall structure of the application Figure 2 ;

[0024] Figure 3 It is an exploded view of this application. DETAILED DESCRIPTION

[0025] In order to make the objectives, technical solutions and advantages of the present application more clearly understood, the present application is described and illustrated below in conjunction with the accompanying drawings and embodiments.

[0026] It should be understood that the specific embodiments described herein are only used to explain the present application and are not intended to limit the present application. Based on the embodiments provided in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present application. In addition, it can also be understood that although the efforts made in this development process may be complex and lengthy, for ordinary technicians in the field related to the contents disclosed in the present application, some changes such as design, manufacturing or production based on the technical contents disclosed in the present application are only conventional technical means, and should not be understood as the contents disclosed in the present application are insufficient.

[0027] Reference to "embodiments" in this application means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those of ordinary skill in the art that the embodiments described in this application may be combined with other embodiments without conflict.

[0028] Unless otherwise defined, the technical terms or scientific terms used in this application shall have the common meanings understood by persons with ordinary skills in the technical field to which this application belongs. The words "a", "an", "a", "the" and the like used in this application do not indicate quantity restrictions and may indicate the singular or plural. The terms "include", "comprising", "having" and any variations thereof involved in the present application are intended to cover non-exclusive inclusions; for example, a process, method, system, product or device including a series of steps or modules (units) is not limited to the listed steps or units, but may also include steps or units that are not listed, or may also include other steps or units inherent to these processes, methods, products or devices. The words "connected", "connected", "coupled" and the like involved in the present application are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. The "plurality" involved in the present application refers to greater than or equal to two. " / " and "and / or" describe the association relationship of associated objects. " / " means "or", for example, "A / B" can mean: A exists alone or B exists alone; "and / or" means that there can be three relationships, for example, "A and / or B" can mean: A exists alone, A and B exist at the same time, and B exists alone. The terms "first", "second", "third" and the like involved in the present application are only used to distinguish similar objects and do not represent a specific ordering of objects.

[0029] See also Figures 1 to 3 The driving motor of this embodiment mainly includes a stator assembly and a rotor assembly sleeved on the outside of the stator assembly and rotatable relative to the stator assembly. The stator assembly includes a stator core 1, and a coil winding (not shown in the figure) is arranged in the stator slot 11 of the stator core. The rotor assembly includes a rotor housing 2, and a rotor 21 is embedded in the inner wall of the rotor housing. The rotor is provided with a magnetic steel 22, and the magnetic steel is evenly embedded in the inner wall of the rotor. After the coil winding is energized, the rotation of the rotor assembly is realized through the electromagnetic induction between the stator assembly and the rotor assembly. It is also possible to arrange a magnetic steel on the stator assembly and a coil winding on the rotor assembly to realize the relative rotation between the stator assembly and the rotor assembly, which are all prior arts.

[0030] The rotor housing is fixedly connected with a rotating shaft 23 passing through the stator core of the stator assembly. The rotor housing and one end of the rotating shaft are keyed to achieve relative positioning in the circumferential direction and prevent axial separation from the rotating shaft end. The stator core of the stator assembly is provided with a through hole 12 for the rotating shaft to pass through. A gap for accommodating lubricating oil (butter, engine oil, etc.) is formed between the inner wall of the through hole and the rotating shaft. An oil seal mechanism is provided on the side of the stator assembly away from the rotor assembly.

[0031] Specifically, the oil seal mechanism includes an oil seal plate 3 sleeved on the rotating shaft, and the oil seal plate and the stator assembly are circumferentially positioned at least by a positioning pin (not shown in the figure). Preferably, in this embodiment, the oil seal plate is provided with a screw hole 31 for the positioning pin to pass through, and the inner wall of the through hole of the stator core of the stator assembly is provided with a positioning groove 13 that cooperates with the positioning pin.

[0032] In this embodiment, a flywheel assembly is fixed to the rotor housing in an integral or split manner, and the flywheel assembly includes a flywheel 4 that is integral or split and is arranged on the outer wall of the rotor housing, and the flywheel is provided with fan blades 41. The flywheel assembly is provided with a coupling mechanism 42 for cooperating with an ignition assembly to ignite the ignition assembly.

[0033] Among them, the ignition component can be a magnetic coupling mechanism that cooperates with the ignition component. Specifically, the coupling mechanism includes a power supply coil, an ignition coil, and an igniter. The coupling mechanism includes a magnetic pole core and a magnet arranged on the rotor assembly. Through the rotation of the rotor assembly, the ignition component cuts the magnetic lines of force of the rotating magnetic pole of the magnetic coupling mechanism, and induces current on the power supply coil, thereby causing the ignition coil to discharge and ignite.

[0034] In addition, the present application also relates to a magnetic motor electric starting device / mechanism (not shown in the figure), including an ignition component and a drive motor, characterized in that the drive motor includes the drive motor as described above, the drive motor cooperates with the ignition component through a coupling mechanism, and through the rotation of the rotor assembly, the ignition component cuts the magnetic flux lines of the coupling mechanism to achieve discharge ignition.

[0035] In addition, the present application also relates to a chainsaw (not shown in the figure), including a chainsaw body, an engine is arranged in the chainsaw body, and the chainsaw body is provided with a magneto electric starting mechanism as described above, wherein the rotor assembly can be connected to the crankshaft of the engine, and the ignition assembly can be connected to the chainsaw body or to the engine casing. The specific structure is not limited here, and they can cooperate with each other to realize the electric starting of the engine of the chainsaw.

[0036] The above-mentioned embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application shall be subject to the attached claims.

Claims

1. A driving motor, comprising a stator assembly and a rotor assembly that cooperates with the stator assembly and can rotate relative to the stator assembly, wherein the rotation of the rotor assembly is achieved through electromagnetic induction between the stator assembly and the rotor assembly, characterized in that: The rotor assembly comprises a rotor housing sleeved outside the stator assembly and a flywheel assembly fixed to the rotor housing in an integral or split manner. The flywheel assembly is provided with a coupling mechanism for cooperating with an ignition assembly to ignite the ignition assembly.

2. The drive motor according to claim 1, characterized in that: A rotor is fixed on the inner wall of the rotor housing, and a magnetic steel is arranged on the rotor.

3. The drive motor according to claim 2, characterized in that: The magnetic steels are evenly spaced and distributed on the inner wall of the rotor.

4. The drive motor according to claim 2, characterized in that: The rotor housing is fixedly connected with a rotating shaft passing through the stator assembly. The stator assembly is provided with a through hole for the rotating shaft to pass through. There is a gap between the inner wall of the through hole and the rotating shaft.

5. The driving motor according to claim 1, characterized in that: The flywheel assembly comprises an integrated or split flywheel arranged on the outer wall of the rotor housing.

6. The driving motor according to claim 2, characterized in that: The flywheel is provided with fan blades.

7. The drive motor according to any one of claims 1 to 6, characterized in that: The rotor assembly is provided with a rotating shaft passing through the stator assembly, and the stator assembly is provided with a through hole for the rotating shaft to pass through, and a gap for accommodating lubricating oil is formed between the inner wall of the through hole and the rotating shaft.

8. The drive motor according to claims 1 to 7, characterized in that: An oil sealing mechanism is provided on the side of the stator assembly facing away from the rotor assembly; and / or, the oil sealing mechanism includes an oil sealing plate sleeved on the rotating shaft, and the oil sealing plate and the stator assembly are circumferentially positioned at least by a locating pin; and / or, the oil sealing plate is provided with a screw hole for the locating pin to pass through, and the inner wall of the through hole of the stator assembly is provided with a locating groove that cooperates with the locating pin.

9. A magneto electric starting device, comprising an ignition assembly and a drive motor, characterized in that: The drive motor comprises the drive motor as claimed in any one of claims 1 to 8, and the drive motor cooperates with the ignition component through a coupling mechanism, and the discharge ignition of the ignition component is achieved through electromagnetic induction between the coupling mechanism and the ignition component.

10. A chainsaw, comprising a chainsaw body, characterized in that: The chain saw body is provided with a magnetic motor electric starting mechanism as claimed in claim 9.

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