Multi-function machine

Abstract

The present application relates to the technical field of mechanical transmission, and discloses a multifunctional machine, a motor output shaft, an eccentric transmission member, a power output shaft and a cutting member of the multifunctional machine jointly constitute a power transmission assembly, and a clutch mechanism is arranged between the cutting part of the cutting member and the motor output shaft in the power transmission assembly; when the power transmission assembly is in a normal working state, the cutting part of the cutting member is rigidly connected with the motor output shaft, when the power transmission assembly is in an overload protection state, the rigid connection between the cutting part of the cutting member and the motor output shaft is released, and the clutch mechanism is configured to switch the power transmission assembly between the normal working state and the overload protection state according to the size of the load transmitted by the cutting part to the motor output shaft, so that the multifunctional machine can be prevented from being damaged due to excessive load during operation, and the service life of the multifunctional machine as a whole is ensured.

Description

Technical Field

[0001] This invention relates to the field of mechanical transmission technology, and in particular to a multifunctional machine. Background Technology

[0002] The multi-functional machine, also known as the swing machine, is mainly used to cut the target object by reciprocating the saw blade through a motor.

[0003] However, when the load transmitted by the saw blade to the motor is too large, the motor is prone to damage, such as the motor shaft being unable to withstand the load or the motor burning out.

[0004] Therefore, how to prevent the motor of the multi-functional machine from being damaged due to excessive load during operation, thereby ensuring the overall service life of the multi-functional machine, has become a technical problem that urgently needs to be solved in this field. Summary of the Invention

[0005] The purpose of this invention is to at least solve the technical problem of how to prevent motor damage caused by excessive load during operation of a multi-functional machine, thereby ensuring the overall service life of the multi-functional machine. This purpose is achieved through the following technical solution:

[0006] This invention proposes a multi-functional machine, comprising: a housing having an inner cavity; a motor assembly located within the inner cavity, the motor assembly including a motor body and a motor output shaft rotatable about its own axial direction, the motor output shaft extending along a first direction; an eccentric transmission member located within the inner cavity, the eccentric transmission member being connected to the motor output shaft, the eccentric transmission member being eccentrically positioned relative to the axis of the motor output shaft; a swing assembly including a power output shaft extending along a second direction and connected to the eccentric transmission member, the second direction being perpendicular to the first direction, the power output shaft being configured to reciprocate on both sides of the axis of the motor output shaft under the drive of the motor output shaft and the eccentric transmission member; and a cutting member fixedly connected to the power output shaft, the cutting member having a cutting function. The cutting section is located outside the housing. The motor output shaft, eccentric transmission component, power output shaft, and cutting component together constitute a power transmission assembly. Within the power transmission assembly, a clutch mechanism is provided between the cutting section of the cutting component and the motor output shaft. The power transmission assembly has a normal operating state and an overload protection state. When the power transmission assembly is in the normal operating state, the cutting section of the cutting component is rigidly connected to the motor output shaft. When the power transmission assembly is in the overload protection state, the rigid connection between the cutting section of the cutting component and the motor output shaft is released. The clutch mechanism is configured to switch the power transmission assembly between the normal operating state and the overload protection state according to the load transmitted by the cutting section to the motor output shaft.

[0007] When this multi-functional machine is working normally, the motor assembly is started first to rotate the motor output shaft. Since the cutting part of the cutting component is rigidly connected to the motor output shaft, and under the action of the swing assembly, the power transmitted from the motor output shaft is ultimately transmitted to the cutting part of the cutting component along the power transmission assembly. Therefore, the cutting part can swing back and forth on both sides of the axis of the motor output shaft to cut the target object. At this time, the power transmission assembly is in normal working condition. When the load transmitted by the cutting part to the motor output shaft is too large, the clutch mechanism will switch the power transmission assembly to the overload protection state, that is, the rigid connection between the cutting part of the cutting component and the motor output shaft will be released, thereby preventing the multi-functional machine from being damaged by excessive load during operation, thus ensuring the overall service life of the multi-functional machine.

[0008] In some embodiments of the present invention, the swing assembly further includes a connector extending along a first direction, with the two ends of the connector in the first direction being a first connecting end and a second connecting end, the first connecting end being connected to a power output shaft and the second connecting end being connected to an eccentric transmission component.

[0009] In some embodiments of the present invention, the power output shaft includes a shaft extending along a second direction and a protrusion protruding from the outer wall of the shaft. The protrusion is arranged circumferentially around the shaft and is provided with a protruding toothed ring. A first connecting end is sleeved on the outer wall of the shaft and is provided with a connecting toothed ring. The connecting toothed ring and the protruding toothed ring are spaced apart along the second direction. When the power transmission assembly is in normal working condition, the connecting toothed ring and the protruding toothed ring are engaged. When the power transmission assembly is in overload protection condition, the connecting toothed ring and the protruding toothed ring are separated.

[0010] In some embodiments of the present invention, the power output shaft further includes a first clutch spring. The first clutch spring, the protruding toothed ring, and the connecting toothed ring are arranged sequentially along the second direction, and the first clutch spring, the protruding toothed ring, and the connecting toothed ring constitute a clutch mechanism. The first clutch spring is sleeved on the outer wall of the shaft body and can extend and retract along the second direction. Along the second direction, the end of the first clutch spring near the connecting toothed ring is connected to the first connecting end, and the end of the first clutch spring away from the connecting toothed ring is connected to the shaft body.

[0011] In some embodiments of the present invention, the first connecting end has a connecting hole for fitting onto the outer wall of the shaft, and an abutment is provided in the connecting hole. The abutment is arranged circumferentially around the inner wall of the connecting hole. Along the second direction, the end of the first clutch spring near the connecting gear ring abuts against the abutment.

[0012] In some embodiments of the present invention, the second connecting end includes two clamping assemblies spaced apart along a third direction. Along the third direction, a clamping space for clamping the eccentric transmission member is provided between the two clamping assemblies. The third direction is perpendicular to the first direction and perpendicular to the second direction. The eccentric transmission member and the two clamping assemblies constitute a clutch mechanism. Each clamping assembly includes a clamping member and a second clutch spring, which is capable of extending and retracting along the third direction. In any clamping assembly, along the third direction, one end of the second clutch spring is connected to the clamping member, and the other end of the second clutch spring is connected to the outer wall of the eccentric transmission member. When the power transmission assembly is in normal operating condition, the lengths of the two second clutch springs in the third direction remain unchanged. When the power transmission assembly is in overload protection condition, both second clutch springs are capable of reciprocating extension and retraction along the third direction.

[0013] In some embodiments of the present invention, in any clamping assembly, the clamping member is provided with a mounting hole for mounting a second clutch spring, the mounting hole extending in a third direction, and when the power transmission assembly is in normal working condition, one end of the second clutch spring is located outside the mounting hole.

[0014] In some embodiments of the present invention, the cutting element includes a first element and a second element connected to the first element. The first element is connected to the power output shaft, the second element is located outside the housing, and the cutting portion is located at the end of the second element away from the first element.

[0015] In some embodiments of the invention, the multifunction device further includes a battery located in the cavity, which is used to power the motor assembly.

[0016] In some embodiments of the present invention, the battery is provided with a charging interface, and the housing is provided with a charging hole corresponding to the charging interface.

[0017] The above description is only an overview of the technical solution of this application. In order to better understand the technical means of this application and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this application more obvious and understandable, the following are specific embodiments of this application. Attached Figure Description

[0018] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the invention. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:

[0019] Figure 1 This is a schematic diagram of the overall structure of the multi-functional machine provided in an embodiment of the present invention;

[0020] Figure 2This is a partial structural diagram of the multi-functional machine provided in an embodiment of the present invention after removing part of the housing;

[0021] Figure 3 A cross-sectional view of a multifunction machine provided in an embodiment of the present invention;

[0022] Figure 4 This is a schematic diagram of the structure of the swing assembly in the multi-functional machine provided in an embodiment of the present invention;

[0023] Figure 5 This is a schematic diagram of the power output shaft in the multi-functional machine provided in an embodiment of the present invention;

[0024] Figure 6 This is a schematic diagram of the connecting component in the multi-functional machine provided in an embodiment of the present invention;

[0025] Figure 7 This is a schematic diagram illustrating the cooperation relationship between the connecting component and the eccentric transmission component in a multi-functional machine provided in an embodiment of the present invention.

[0026] Figure 8 This is a cross-sectional view showing the cooperation relationship between the connecting component and the eccentric transmission component in the multi-functional machine provided in an embodiment of the present invention.

[0027] The attached figures are labeled as follows:

[0028] 1. Multifunctional machine;

[0029] 10. Housing; 11. Inner cavity; 12. Charging port;

[0030] 20. Motor assembly; 21. Motor body; 22. Motor output shaft; 23. Connecting shaft;

[0031] 30. Eccentric transmission components;

[0032] 40. Swing assembly; 41. Connector; 411. First connecting end; 4111. Connecting gear ring; 4112. Connecting hole; 41121. Abutment platform; 412. Second connecting end; 4121. Clamping assembly; 41211. Clamping member; 412111. Mounting hole; 41212. Second clutch spring; 42. Power output shaft; 421. Shaft body; 422. Protrusion; 4221. Protruding gear ring; 423. First clutch spring; 424. Snap-fit ​​part;

[0033] 50. Cutting part; 51. First piece; 52. Second piece; 521. Cutting section;

[0034] 60. Battery; 61. Charging port;

[0035] 71. Head; 72. Rod;

[0036] 81. Compression nut; 82. Limiting snap ring;

[0037] 91. Control components; 92. Power switch;

[0038] a. Clamping space. Detailed Implementation

[0039] Exemplary embodiments of the present disclosure will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

[0040] It should be understood that the terminology used herein is for the purpose of describing particular exemplary embodiments only and is not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms “a,” “an,” and “described” as used herein may also include the plural forms. The terms “comprising,” “including,” “containing,” and “having” are inclusive and therefore indicate the presence of the stated features, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, steps, operations, elements, components, and / or combinations thereof. The method steps, processes, and operations described herein are not construed as requiring them to be performed in a particular order described or illustrated unless the order of performance is explicitly indicated. It should also be understood that additional or alternative steps may be used.

[0041] Although terms such as first, second, third, etc., may be used in this document to describe multiple elements, components, regions, layers, and / or segments, these elements, components, regions, layers, and / or segments should not be limited by these terms. These terms may be used only to distinguish one element, component, region, layer, or segment from another. Unless the context clearly indicates otherwise, terms such as "first," "second," and other numerical terms used herein do not imply order or sequence. Therefore, the first element, component, region, layer, or segment discussed below may be referred to as the second element, component, region, layer, or segment without departing from the teachings of the exemplary embodiments.

[0042] For ease of description, spatial relative terms may be used in the text to describe the relationship of one element or feature relative to another element or feature, as shown in the figure. These relative terms include, for example, "inside," "outside," "middle," "outer," "below," "below," "above," "over," etc. Such spatial relative terms are intended to include different orientations of the device in use or operation, other than those depicted in the figure. For example, if the device in the figure is flipped, an element described as "below other elements or features" or "below other elements or features" would subsequently be oriented as "above other elements or features" or "above other elements or features." Therefore, the example term "below" can include both upper and lower orientations. The device may be otherwise oriented (rotated 90 degrees or in other directions), and the spatial relative descriptors used in the text will be interpreted accordingly.

[0043] Figure 1 This is a schematic diagram of the overall structure of the multi-functional machine provided in an embodiment of the present invention; Figure 2 This is a partial structural diagram of the multi-functional machine provided in an embodiment of the present invention after removing part of the housing; Figure 3 A cross-sectional view of a multifunction machine provided in an embodiment of the present invention; Figure 4 This is a schematic diagram of the structure of the swing assembly in the multi-functional machine provided in an embodiment of the present invention; Figure 5 This is a schematic diagram of the power output shaft in the multi-functional machine provided in an embodiment of the present invention; Figure 6 This is a schematic diagram of the connecting component in the multi-functional machine provided in an embodiment of the present invention; see reference. Figures 1 to 6This invention provides a multi-functional machine 1, comprising: a housing 10 having an inner cavity 11; a motor assembly 2 located in the inner cavity 11, the motor assembly 2 including a motor body 21 and a motor output shaft 22 rotatable about its own axis, the motor output shaft 22 extending along a first direction; an eccentric transmission member 30 located in the inner cavity 11, the eccentric transmission member 30 connected to the motor output shaft 22, the eccentric transmission member 30 being eccentrically disposed relative to the axis of the motor output shaft 22; a swing assembly 40 including a power output shaft 42 extending along a second direction and connected to the eccentric transmission member 30, the second direction being perpendicular to the first direction, the power output shaft 42 being configured to reciprocate on both sides of the axis of the motor output shaft 22 under the drive of the motor output shaft 22 and the eccentric transmission member 30; and a cutting member 5 fixedly connected to the power output shaft 42. The cutting component 5 has a cutting section 521 located outside the housing 10. The motor output shaft 22, the eccentric transmission component 30, the power output shaft 42, and the cutting component 5 together constitute a power transmission assembly. In the power transmission assembly, a clutch mechanism is provided between the cutting section 521 of the cutting component 5 and the motor output shaft 22. The power transmission assembly has a normal operating state and an overload protection state. When the power transmission assembly is in the normal operating state, the cutting section 521 of the cutting component 5 is rigidly connected to the motor output shaft 22. When the power transmission assembly is in the overload protection state, the rigid connection between the cutting section 521 of the cutting component 5 and the motor output shaft 22 is released. The clutch mechanism is configured to switch the power transmission assembly between the normal operating state and the overload protection state according to the magnitude of the load transmitted by the cutting section 521 to the motor output shaft 22.

[0044] In this embodiment, when the multi-functional machine 1 is working normally, the motor assembly 2 is started first to make the motor output shaft 22 rotate. Since the cutting part 521 of the cutting piece 5 is rigidly connected to the motor output shaft 22, and under the action of the swing assembly 40, the power transmitted by the motor output shaft 22 will be transmitted to the cutting part 521 of the cutting piece 5 along the power transmission assembly. Therefore, the cutting part 521 can swing back and forth on both sides of the axis of the motor output shaft 22 with the power output shaft 42 to cut the target object. At this time, the power transmission assembly is in normal working condition. When the load transmitted by the cutting part 521 to the motor output shaft 22 is too large, the clutch mechanism will switch the power transmission assembly to the overload protection state, that is, the rigid connection between the cutting part 521 of the cutting piece 5 and the motor output shaft 22 will be released.

[0045] Therefore, this multi-functional machine 1, due to the presence of a clutch mechanism, can release the rigid connection between the cutting part 521 of the cutting component 5 and the motor output shaft 22 when the multi-functional machine 1 is under excessive load during operation. This prevents the motor output shaft 22 from breaking or even the motor assembly 2 from burning out under excessive load, thereby effectively ensuring the overall service life of the multi-functional machine 1.

[0046] Furthermore, since the clutch mechanism prevents the motor of the multi-function machine 1 from being damaged due to excessive load during operation, the multi-function machine 1 can be miniaturized. That is, there is no need to worry about the inability to withstand large loads due to factors such as the small diameter of the motor output shaft 22. It is easy to understand that the miniaturized multi-function machine 1 described above is only an example to emphasize that the multi-function machine 1 of the present invention has the effect of overload protection. In actual working conditions, the specifications of the multi-function machine 1 should be determined according to the specific working conditions. Larger multi-function machines 1 are also within the protection scope of the present invention.

[0047] It is easy to understand that the cutting part 521 can be a serrated tooth.

[0048] Moreover, such as Figure 3 As shown, the motor assembly 2 may also include a connecting shaft 23 extending along a first direction. The motor output shaft 22 is connected to the eccentric transmission member 30 through the connecting shaft 23, so as to realize the eccentric setting of the eccentric shaft relative to the axis of the motor output shaft 22.

[0049] Furthermore, it should be noted that the core objective of this invention is to sever the rigid connection between the cutting part 5 and the motor output shaft 22. Typically, a clutch mechanism is located between the power output shaft 42 and the motor output shaft 22. This embodiment does not impose such a limitation, but instead proposes the concept of a power transmission assembly, and limits the location of the clutch mechanism to between the cutting part 521 and the motor output shaft 22. This is because if the cutting part 5 itself has a clutch mechanism (for example, a clutch mechanism is provided between the cutting part 521 and the end connecting the cutting part 5 and the power output shaft 42), it can ultimately achieve switching between a rigid connection and a non-rigid connection between the cutting part 5 and the motor output shaft 22. Therefore, this embodiment does not limit the specific location of the clutch mechanism. As long as the clutch mechanism is located in the power transmission assembly and between the cutting part 521 and the motor output shaft 22, it should be included within the scope of protection of this invention.

[0050] like Figure 6 As shown, according to an optional embodiment of the present invention, the swing assembly 40 further includes a connector 41, which extends along a first direction. The two ends of the connector 41 in the first direction are a first connecting end 411 and a second connecting end 412, respectively. The first connecting end 411 is connected to the power output shaft 42, and the second connecting end 412 is connected to the eccentric transmission member 30.

[0051] In this embodiment, the eccentric transmission member 30 is connected to the power output shaft 42 via the connector 41 to realize power transmission in the power transmission assembly. Since the clutch mechanism is located between the cutting part 521 of the cutter 5 and the motor output shaft 22 in the power transmission assembly, and can switch the power transmission assembly from the normal working state to the overload protection state, if the clutch mechanism is located between the three structures of the eccentric transmission member 30, the connector 41 and the power output shaft 42, it is easy to understand that when the rigid connection between any two of the three structures of the eccentric transmission member 30, the connector 41 and the power output shaft 42 is released, the power transmission assembly can be switched from the normal working state to the overload protection state.

[0052] The following example illustrates the specific structure of the clutch mechanism:

[0053] refer to Figures 4 to 6 According to an optional embodiment of the present invention, the power output shaft 42 includes a shaft body 421 extending along a second direction and a protrusion 422 protruding from the outer wall of the shaft body 421. The protrusion 422 is arranged circumferentially around the shaft body 421 and is provided with a protruding toothed ring 4221. A first connecting end 411 is sleeved on the outer wall of the shaft body 421 and is provided with a connecting toothed ring 4111. The connecting toothed ring 4111 and the protruding toothed ring 4221 are spaced apart along the second direction. When the power transmission assembly is in normal working condition, the connecting toothed ring 4111 and the protruding toothed ring 4221 are engaged. When the power transmission assembly is in overload protection condition, the connecting toothed ring 4111 and the protruding toothed ring 4221 are separated. The power output shaft 42 also includes a first clutch spring 423. The first clutch spring 423, the protruding gear ring 4221, and the connecting gear ring 4111 are arranged sequentially along the second direction. The first clutch spring 423, the protruding gear ring 4221, and the connecting gear ring 4111 constitute a clutch mechanism. The first clutch spring 423 is sleeved on the outer wall of the shaft body 421 and can extend and retract along the second direction. Along the second direction, the end of the first clutch spring 423 near the connecting gear ring 4111 is connected to the first connecting end 411, and the end of the first clutch spring 423 away from the connecting gear ring 4111 is connected to the shaft body 421.

[0054] It is easy to understand that, in order to facilitate the fixing of both ends of the first clutch spring 423, along the second direction, the upper end of the first clutch spring 423 can be fixedly connected to the shaft 421 (e.g., glued), and the lower end of the first clutch spring 423 can abut against the first connecting end 411 of the connector 41.

[0055] In this embodiment, when the multi-functional machine 1 is working normally, the first clutch spring 423 is in the initial state, the connecting gear ring 4111 meshes with the protruding gear ring 4221, and the power output shaft 42 is rigidly connected to the connecting member 41 so that the cutting part 521 of the cutting member 5 can be rigidly connected to the motor output shaft 22. The power transmission component is in a normal working state, so the cutting part 521 can follow the power output shaft 42 to swing back and forth on both sides of the axis of the motor output shaft 22 to achieve the cutting of the target object;

[0056] When the load transmitted from the cutting section 521 to the motor output shaft 22 is too large, since the first connecting end 411 is sleeved on the outer wall of the shaft 421, and the end of the first clutch spring 423 near the connecting gear ring 4111 is connected to the first connecting end 411, while the end of the first clutch spring 423 away from the connecting gear ring 4111 is connected to the shaft 421, as the load increases, the first connecting end 411 of the connector 41 will gradually overcome the elastic force of the first clutch spring 423 and move upward along the second direction. At this time, the first clutch spring 423 is under pressure. In the compressed state (in the second direction, the length of the first spring in the compressed state is less than its length in the initial state), the connecting gear ring 4111 gradually disengages from the protruding gear ring 4221 to release the rigid connection between the power output shaft 42 and the connecting member 41, thereby releasing the rigid connection between the cutting part 521 of the cutting member 5 and the motor output shaft 22. At this time, the power transmission assembly switches to the overload protection state, thereby preventing the multi-functional machine 1 from being damaged by excessive load during operation, thus ensuring the overall service life of the multi-functional machine 1.

[0057] Continue to refer to Figures 4 to 6 Specifically, according to an optional embodiment of the present invention, the first connecting end 411 has a connecting hole 4112 for being sleeved on the outer wall of the shaft 421, and an abutment platform 41121 is provided in the connecting hole 4112. The abutment platform 41121 is arranged circumferentially around the inner wall of the connecting hole 4112. Along the second direction, one end of the first clutch spring 423 near the connecting gear ring 4111 abuts against the abutment platform 41121.

[0058] In this embodiment, it is easy to understand that the purpose of the connecting hole 4112 is to enable the first connecting end 411 to be sleeved on the outer wall of the shaft 421.

[0059] In addition, as mentioned above, since the lower end of the first clutch spring 423 can abut against the first connecting end 411 of the connector 41 along the second direction, a ring of abutment platform 41121 is provided in the connecting hole 4112 of the first connecting end 411 in this embodiment, so that the first connecting end 411 of the connector 41 can abut against the first clutch spring 423 more stably.

[0060] Figure 7 This is a schematic diagram illustrating the cooperation relationship between the connecting component and the eccentric transmission component in a multi-functional machine provided in an embodiment of the present invention. Figure 8 This is a cross-sectional view showing the fit between the connector and the eccentric transmission component in the multi-functional machine provided in this embodiment of the invention; see also reference. Figures 1 to 8 According to an optional embodiment of the present invention, the second connecting end 412 includes two clamping assemblies 4121 spaced apart along a third direction. Along the third direction, a clamping space 'a' for clamping the eccentric transmission member 30 is provided between the two clamping assemblies 4121. The third direction is perpendicular to the first direction and perpendicular to the second direction. The eccentric transmission member 30 and the two clamping assemblies 4121 constitute a clutch mechanism. Each clamping assembly 4121 includes a clamping member 41211 and a second clutch spring 41212. 41212 is capable of telescoping along a third direction; in any clamping assembly 4121, along the third direction, one end of the second clutch spring 41212 is connected to the clamping member 41211, and the other end of the second clutch spring 41212 is connected to the outer wall of the eccentric transmission member 30; when the power transmission assembly is in normal working condition, the length of the two second clutch springs 41212 in the third direction remains unchanged; when the power transmission assembly is in overload protection condition, both second clutch springs 41212 are capable of reciprocating telescoping along the third direction.

[0061] In this embodiment, when the multi-function machine 1 is working normally, the second clutch spring 41212 is in the initial state, that is, the eccentric transmission component 30 cannot overcome the elastic force of the second spring when it swings. The length of the two second clutch springs 41212 in the third direction remains unchanged. At this time, it can be regarded as the eccentric transmission component 30 and the second connecting end 412 are rigidly connected, so that the cutting part 521 of the cutting component 5 can be rigidly connected to the motor output shaft 22. The power transmission component is in normal working state, so the cutting part 521 can follow the power output shaft 42 to swing back and forth on both sides of the axis of the motor output shaft 22 to achieve the cutting of the target object.

[0062] When the load transmitted from the cutting part 521 to the motor output shaft 22 is too large, the eccentric transmission component 30 will overcome the elastic force of the second clutch spring 41212 when it swings. That is, the two second clutch springs 41212 alternately extend and retract along the third direction as the eccentric transmission component 30 swings. In other words, at this time, the eccentric transmission component 30 and the second end of the connecting component 41 are in an elastic connection (i.e., the rigid connection is released), thereby releasing the rigid connection between the cutting part 521 of the cutting component 5 and the motor output shaft 22. At this time, the power transmission component switches to the overload protection state, thereby preventing the multi-functional machine 1 from being damaged by the motor component 2 due to excessive load during operation, and playing a role in ensuring the overall service life of the multi-functional machine 1.

[0063] like Figure 6 and Figure 8 As shown, specifically, according to an optional embodiment of the present invention, in any clamping assembly 4121, the clamping member 41211 is provided with a mounting hole 412111 for mounting a second clutch spring 41212. The mounting hole 412111 extends in a third direction. When the power transmission assembly is in normal working condition, one end of the second clutch spring 41212 is located outside the mounting hole 412111.

[0064] In this embodiment, in order to facilitate the installation of the second clutch spring 41212, a mounting hole 412111 extending in a third direction is provided on the clamping member 41211. The mounting hole 412111 can also play a guiding role for the second clutch spring 41212 during extension and retraction.

[0065] Furthermore, since the two second clutch springs 41212 need to be able to reciprocate in a third direction when the power transmission assembly is in an overload protection state, the second clutch springs 41212 need to have a sufficiently compressed space when the power transmission assembly is in a normal working state. Therefore, in this embodiment, the second clutch springs 41212 are configured such that when the power transmission assembly is in a normal working state, one end of the second clutch springs 41212 is located outside the mounting hole 412111 (i.e., the end of the second spring that abuts against the eccentric transmission member 30 protrudes from the mounting hole 412111), so as to enable the two second clutch springs 41212 to reciprocate in a third direction when the power transmission assembly is in an overload protection state, thereby ultimately releasing the rigid connection between the cutting part 521 of the cutting member 5 and the motor output shaft 22.

[0066] It is easy to understand that the connecting member 41 can be a shift fork. The two clutch mechanisms mentioned above (one clutch mechanism includes: a first clutch spring 423, a protruding toothed ring 4221, and a connecting toothed ring 4111; for ease of description, this clutch mechanism will be referred to as the first mechanism. The other clutch mechanism includes: an eccentric transmission member 30 and a clamping assembly 4121; for ease of description, this clutch mechanism will be referred to as the second mechanism) are only convenient solutions based on the structure of the connecting member 41, taking the swing assembly 40 including the connecting member 41 as an example. In actual working conditions, the type of clutch mechanism, the clutch method, and the setting position of the clutch mechanism are not limited, as long as the power transmission assembly can switch between normal working state and overload protection state according to the load transmitted by the cutting part 521 to the motor output shaft 22. The specific solution can be determined according to the working conditions.

[0067] In addition, for a multi-function machine 1, either the first mechanism or the second mechanism mentioned above can be selected as the clutch mechanism of the multi-function machine 1; or, the first mechanism and the second mechanism mentioned above can be set in the same multi-function machine 1 to further ensure that the clutch mechanism can provide overload protection for the multi-function machine 1; similarly, the type of clutch mechanism and the number of clutch mechanisms set in a multi-function machine 1 should be determined according to the actual working conditions and there are no specific restrictions.

[0068] like Figures 1 to 3 As shown, according to an optional embodiment of the present invention, the cutting member 5 includes a first member 51 and a second member 52 connected to the first member 51. The first member 51 is connected to the power output shaft 42, the second member 52 is located outside the housing 10, and the cutting portion 521 is located at the end of the second member 52 opposite to the first member 51.

[0069] In this embodiment, the assembly method of the cutting part 5 will be described in detail below using one case as an example:

[0070] First, it is easy to understand that, in order to facilitate the assembly and disassembly of the cutting part 5, the cutting part 5 is preferably detachably connected to the power output shaft 42;

[0071] Therefore, the power output shaft 42 can be configured as a hollow shaft, with a clamping bolt passing through the power output shaft 42 and the housing 10 from top to bottom along the second direction (i.e., the head 71 of the clamping bolt is at the bottom and the rod 72 is at the top), and then the clamping bolt is fixed at the upper end of the housing 10 by a clamping nut 81; while the first piece 51 of the cutting part 5 can be clamped between the lower end of the power output shaft 42 and the head 71 of the clamping bolt, such as Figure 3 As shown, this allows for a detachable connection to the cutting component 5.

[0072] Continue to refer to Figure 2 and Figure 3 Specifically, the power output shaft 42 may also include a locking part 424, which is sleeved on the outer wall of the shaft body 421 and located at the lowest end of the shaft body 421. During assembly, the first piece 51 of the cutting part 5 can be clamped between the locking part 424 and the head 71 of the clamping bolt.

[0073] In addition, such as Figure 3 As shown, a limiting snap ring 82 can also be attached to the outer side of the uppermost end of the clamping bolt shank 72 to further ensure the stability of the assembly.

[0074] like Figure 2 and Figure 3 As shown, according to an optional embodiment of the present invention, the multifunction machine 1 further includes a battery 60 located in the inner cavity 11, the battery 60 being used to power the motor assembly 2.

[0075] In this embodiment, specifically, the multi-function machine 1 can also be equipped with a control component 91 and a power switch 92. The power switch 92 is used to control the opening and closing of the motor component 2, while the control component 91 is used to control the rotational speed of the motor output shaft 22, so as to further improve the working efficiency of the multi-function machine 1.

[0076] According to an optional embodiment of the present invention, the battery 60 is provided with a charging interface 61, and the housing 10 is provided with a charging hole 12 corresponding to the charging interface 61.

[0077] In this embodiment, it is easy to understand that when the battery 60 is depleted, in order to ensure the functionality of the multifunction machine 1, the battery 60 needs to be replaced or charged.

[0078] Therefore, in this embodiment, a charging interface 61 is provided, and a charging hole 12 corresponding to the charging interface 61 is provided on the housing 10 to improve the charging efficiency of the battery 60.

[0079] Additionally, it should be noted that the housing 10 can also be designed to be detachable. In actual operation, when the battery 60 is depleted, the operator can choose to remove the housing 10 to replace the battery 60 or charge the battery 60 directly, thereby further improving convenience.

[0080] The above description is merely a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A multi-functional machine, characterized in that, include: The shell has an internal cavity; A motor assembly is located in the inner cavity. The motor assembly includes a motor body and a motor output shaft that can rotate about its own axis. The motor output shaft extends along a first direction. An eccentric transmission component is located in the inner cavity and is connected to the motor output shaft. The eccentric transmission component is eccentrically arranged relative to the axis of the motor output shaft. The oscillating assembly includes a power output shaft and a connector. The power output shaft extends along a second direction and is connected to the eccentric transmission member. The second direction is perpendicular to the first direction. The power output shaft is configured to oscillate back and forth on both sides of the axis of the motor output shaft under the drive of the motor output shaft and the eccentric transmission member. The connector extends along the first direction, and the two ends of the connector in the first direction are a first connecting end and a second connecting end, respectively. The first connecting end is connected to the power output shaft, and the second connecting end is connected to the eccentric transmission member. as well as A cutting component is fixedly connected to the power output shaft, the cutting component having a cutting portion located outside the housing; The motor output shaft, the eccentric transmission component, the power output shaft, and the cutting component together constitute a power transmission assembly. Furthermore, a clutch mechanism is provided between the cutting portion of the cutting component and the motor output shaft within the power transmission assembly. The power transmission assembly has a normal operating state and an overload protection state. When the power transmission assembly is in the normal operating state, the cutting portion of the cutting component is rigidly connected to the motor output shaft. When the power transmission assembly is in the overload protection state, the rigid connection between the cutting portion of the cutting component and the motor output shaft is released. The clutch mechanism is configured to switch the power transmission assembly between the normal operating state and the overload protection state based on the load transmitted by the cutting portion to the motor output shaft. The second connection end includes two clamping components spaced apart along a third direction. Along the third direction, there is a clamping space between the two clamping components for clamping the eccentric transmission member. The third direction is perpendicular to the first direction and perpendicular to the second direction. The eccentric transmission member and the two clamping components constitute the clutch mechanism. The clamping assembly includes a clamping member and a second clutch spring, the second clutch spring being capable of telescoping along the third direction; in any of the clamping assemblies, along the third direction, one end of the second clutch spring is connected to the clamping member, and the other end of the second clutch spring is connected to the outer wall of the eccentric transmission member; When the power transmission assembly is in the normal operating state, the lengths of the two second clutch springs in the third direction remain unchanged. When the power transmission assembly is in the overload protection state, both second clutch springs can reciprocate and extend along the third direction.

2. The multi-functional machine according to claim 1, characterized in that, The power output shaft includes a shaft extending along the second direction and a protrusion protruding from the outer wall of the shaft. The protrusion is arranged circumferentially around the shaft and is provided with a protruding toothed ring. The first connecting end is sleeved on the outer wall of the shaft body, and the first connecting end is provided with a connecting toothed ring. The connecting toothed ring and the protruding toothed ring are spaced apart along the second direction. When the power transmission assembly is in the normal operating state, the connecting gear ring engages with the protruding gear ring; When the power transmission assembly is in the overload protection state, the connecting gear ring separates from the protruding gear ring.

3. The multi-functional machine according to claim 2, characterized in that, The power output shaft also includes a first clutch spring, and the clutch mechanism also includes a first clutch spring, a protruding gear ring, and a connecting gear ring, wherein the first clutch spring, the protruding gear ring, and the connecting gear ring are arranged sequentially along the second direction; The first clutch spring is sleeved on the outer wall of the shaft and can extend and retract along the second direction. Along the second direction, the end of the first clutch spring near the connecting gear ring is connected to the first connecting end, and the end of the first clutch spring away from the connecting gear ring is connected to the shaft.

4. The multi-functional machine according to claim 3, characterized in that, The first connecting end has a connecting hole for fitting onto the outer wall of the shaft, and an abutment is provided in the connecting hole. The abutment is arranged circumferentially around the inner wall of the connecting hole. Along the second direction, the end of the first clutch spring near the connecting gear ring abuts against the abutment.

5. The multi-functional machine according to claim 1, characterized in that, In any of the clamping assemblies, the clamping member is provided with a mounting hole for mounting the second clutch spring, the mounting hole extending along the third direction, and when the power transmission assembly is in the normal operating state, one end of the second clutch spring is located outside the mounting hole.

6. The multi-functional machine according to claim 1, characterized in that, The cutting component includes a first component and a second component connected to the first component. The first component is connected to the power output shaft, and the second component is located outside the housing. The cutting portion is located at the end of the second component opposite to the first component.

7. The multi-functional machine according to any one of claims 1-6, characterized in that, The multi-functional machine also includes a battery located in the inner cavity, which is used to power the motor assembly.

8. The multi-functional machine according to claim 7, characterized in that, The battery is provided with a charging interface, and the housing is provided with a charging hole corresponding to the charging interface.

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